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version 1.43, 2002/08/21 17:18:08
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version 1.444.2.5, 2011/09/15 03:06:52
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| # Navigate Maps Handler |
# Navigate Maps Handler |
| # |
# |
| # $Id$ |
# $Id$ |
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| # |
# |
| # Copyright Michigan State University Board of Trustees |
# Copyright Michigan State University Board of Trustees |
| # |
# |
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| # |
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| # http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
| # |
# |
| # (Page Handler |
### |
| # |
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| # (TeX Content Handler |
=pod |
| # |
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| # 05/29/00,05/30 Gerd Kortemeyer) |
=head1 NAME |
| # 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23, |
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| # 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16 Gerd Kortemeyer) |
Apache::lonnavmaps - Subroutines to handle and render the navigation |
| # |
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| # 3/1/1,6/1,17/1,29/1,30/1,2/8,9/21,9/24,9/25 Gerd Kortemeyer |
=head1 SYNOPSIS |
| # YEAR=2002 |
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| # 1/1 Gerd Kortemeyer |
Handles navigational maps. |
| # |
|
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The main handler generates the navigational listing for the course, |
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the other objects export this information in a usable fashion for |
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other modules. |
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|
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 OVERVIEW |
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|
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X<lonnavmaps, overview> When a user enters a course, LON-CAPA examines the |
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course structure and caches it in what is often referred to as the |
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"big hash" X<big hash>. You can see it if you are logged into |
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LON-CAPA, in a course, by going to /adm/test. (You may need to |
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tweak the /home/httpd/lonTabs/htpasswd file to view it.) The |
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content of the hash will be under the heading "Big Hash". |
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|
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Big Hash contains, among other things, how resources are related |
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to each other (next/previous), what resources are maps, which |
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resources are being chosen to not show to the student (for random |
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selection), and a lot of other things that can take a lot of time |
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to compute due to the amount of data that needs to be collected and |
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processed. |
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|
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Apache::lonnavmaps provides an object model for manipulating this |
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information in a higher-level fashion than directly manipulating |
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the hash. It also provides access to several auxilary functions |
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that aren't necessarily stored in the Big Hash, but are a per- |
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resource sort of value, like whether there is any feedback on |
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a given resource. |
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|
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Apache::lonnavmaps also abstracts away branching, and someday, |
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conditions, for the times where you don't really care about those |
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things. |
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|
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Apache::lonnavmaps also provides fairly powerful routines for |
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rendering navmaps, and last but not least, provides the navmaps |
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view for when the user clicks the NAV button. |
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|
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B<Note>: Apache::lonnavmaps I<only> works for the "currently |
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logged in user"; if you want things like "due dates for another |
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student" lonnavmaps can not directly retrieve information like |
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that. You need the EXT function. This module can still help, |
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because many things, such as the course structure, are constant |
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between users, and Apache::lonnavmaps can help by providing |
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symbs for the EXT call. |
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|
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The rest of this file will cover the provided rendering routines, |
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which can often be used without fiddling with the navmap object at |
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all, then documents the Apache::lonnavmaps::navmap object, which |
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is the key to accessing the Big Hash information, covers the use |
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of the Iterator (which provides the logic for traversing the |
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somewhat-complicated Big Hash data structure), documents the |
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Apache::lonnavmaps::Resource objects that are returned by |
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|
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=head1 Subroutine: render |
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|
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The navmap renderer package provides a sophisticated rendering of the |
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standard navigation maps interface into HTML. The provided nav map |
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handler is actually just a glorified call to this. |
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|
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Because of the large number of parameters this function accepts, |
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instead of passing it arguments as is normal, pass it in an anonymous |
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hash with the desired options. |
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|
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The package provides a function called 'render', called as |
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Apache::lonnavmaps::render({}). |
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|
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=head2 Overview of Columns |
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|
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The renderer will build an HTML table for the navmap and return |
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it. The table consists of several columns, and a row for each |
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resource (or possibly each part). You tell the renderer how many |
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columns to create and what to place in each column, optionally using |
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one or more of the prepared columns, and the renderer will assemble |
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the table. |
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|
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Any additional generally useful column types should be placed in the |
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renderer code here, so anybody can use it anywhere else. Any code |
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specific to the current application (such as the addition of <input> |
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elements in a column) should be placed in the code of the thing using |
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the renderer. |
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|
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At the core of the renderer is the array reference COLS (see Example |
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section below for how to pass this correctly). The COLS array will |
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consist of entries of one of two types of things: Either an integer |
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representing one of the pre-packaged column types, or a sub reference |
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that takes a resource reference, a part number, and a reference to the |
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argument hash passed to the renderer, and returns a string that will |
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be inserted into the HTML representation as it. |
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|
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All other parameters are ways of either changing how the columns |
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are printing, or which rows are shown. |
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|
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The pre-packaged column names are refered to by constants in the |
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Apache::lonnavmaps namespace. The following currently exist: |
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|
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=over 4 |
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=item * B<Apache::lonnavmaps::resource>: |
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The general info about the resource: Link, icon for the type, etc. The |
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first column in the standard nav map display. This column provides the |
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indentation effect seen in the B<NAV> screen. This column also accepts |
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the following parameters in the renderer hash: |
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|
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=over 4 |
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|
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=item * B<resource_nolink>: default false |
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If true, the resource will not be linked. By default, all non-folder |
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resources are linked. |
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|
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=item * B<resource_part_count>: default true |
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|
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If true, the resource will show a part count B<if> the full |
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part list is not displayed. (See "condense_parts" later.) If false, |
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the resource will never show a part count. |
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|
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=item * B<resource_no_folder_link>: |
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|
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If true, the resource's folder will not be clickable to open or close |
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it. Default is false. True implies printCloseAll is false, since you |
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can't close or open folders when this is on anyhow. |
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|
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=back |
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=item * B<Apache::lonnavmaps::communication_status>: |
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Whether there is discussion on the resource, email for the user, or |
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(lumped in here) perl errors in the execution of the problem. This is |
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the second column in the main nav map. |
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=item * B<Apache::lonnavmaps::quick_status>: |
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An icon for the status of a problem, with five possible states: |
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Correct, incorrect, open, awaiting grading (for a problem where the |
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computer's grade is suppressed, or the computer can't grade, like |
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essay problem), or none (not open yet, not a problem). The |
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third column of the standard navmap. |
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|
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=item * B<Apache::lonnavmaps::long_status>: |
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|
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A text readout of the details of the current status of the problem, |
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such as "Due in 22 hours". The fourth column of the standard navmap. |
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=item * B<Apache::lonnavmaps::part_status_summary>: |
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A text readout summarizing the status of the problem. If it is a |
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single part problem, will display "Correct", "Incorrect", |
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"Not yet open", "Open", "Attempted", or "Error". If there are |
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multiple parts, this will output a string that in HTML will show a |
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status of how many parts are in each status, in color coding, trying |
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to match the colors of the icons within reason. |
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|
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Note this only makes sense if you are I<not> showing parts. If |
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C<showParts> is true (see below), this column will not output |
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anything. |
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=back |
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If you add any others please be sure to document them here. |
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An example of a column renderer that will show the ID number of a |
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resource, along with the part name if any: |
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sub { |
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my ($resource, $part, $params) = @_; |
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if ($part) { return '<td>' . $resource->{ID} . ' ' . $part . '</td>'; } |
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return '<td>' . $resource->{ID} . '</td>'; |
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} |
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Note these functions are responsible for the TD tags, which allow them |
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to override vertical and horizontal alignment, etc. |
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=head2 Parameters |
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|
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Minimally, you should be |
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able to get away with just using 'cols' (to specify the columns |
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shown), 'url' (necessary for the folders to link to the current screen |
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correctly), and possibly 'queryString' if your app calls for it. In |
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that case, maintaining the state of the folders will be done |
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automatically. |
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=over 4 |
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=item * B<iterator>: default: constructs one from %env |
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A reference to a fresh ::iterator to use from the navmaps. The |
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rendering will reflect the options passed to the iterator, so you can |
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use that to just render a certain part of the course, if you like. If |
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one is not passed, the renderer will attempt to construct one from |
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env{'form.filter'} and env{'form.condition'} information, plus the |
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'iterator_map' parameter if any. |
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|
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=item * B<iterator_map>: default: not used |
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If you are letting the renderer do the iterator handling, you can |
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instruct the renderer to render only a particular map by passing it |
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the source of the map you want to process, like |
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'/res/103/jerf/navmap.course.sequence'. |
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=item * B<include_top_level_map>: default: false |
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If you need to include the top level map (meaning the course) in the |
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rendered output set this to true |
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=item * B<navmap>: default: constructs one from %env |
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A reference to a navmap, used only if an iterator is not passed in. If |
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this is necessary to make an iterator but it is not passed in, a new |
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one will be constructed based on env info. This is useful to do basic |
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error checking before passing it off to render. |
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|
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=item * B<r>: default: must be passed in |
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|
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The standard Apache response object. This must be passed to the |
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renderer or the course hash will be locked. |
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=item * B<cols>: default: empty (useless) |
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An array reference |
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=item * B<showParts>:default true |
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A flag. If true, a line for the resource itself, and a line |
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for each part will be displayed. If not, only one line for each |
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resource will be displayed. |
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=item * B<condenseParts>: default true |
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A flag. If true, if all parts of the problem have the same |
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status and that status is Nothing Set, Correct, or Network Failure, |
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then only one line will be displayed for that resource anyhow. If no, |
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all parts will always be displayed. If showParts is 0, this is |
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ignored. |
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=item * B<jumpCount>: default: determined from %env |
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A string identifying the URL to place the anchor 'curloc' at. |
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It is the responsibility of the renderer user to |
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ensure that the #curloc is in the URL. By default, determined through |
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the use of the env{} 'jump' information, and should normally "just |
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work" correctly. |
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|
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=item * B<here>: default: empty string |
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A Symb identifying where to place the 'here' marker. The empty |
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string means no marker. |
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=item * B<indentString>: default: 25 pixel whitespace image |
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A string identifying the indentation string to use. |
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=item * B<queryString>: default: empty |
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A string which will be prepended to the query string used when the |
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folders are opened or closed. You can use this to pass |
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application-specific values. |
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=item * B<url>: default: none |
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The url the folders will link to, which should be the current |
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page. Required if the resource info column is shown, and you |
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are allowing the user to open and close folders. |
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=item * B<currentJumpIndex>: default: no jumping |
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Describes the currently-open row number to cause the browser to jump |
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to, because the user just opened that folder. By default, pulled from |
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the Jump information in the env{'form.*'}. |
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|
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=item * B<printKey>: default: false |
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If true, print the key that appears on the top of the standard |
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navmaps. |
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=item * B<printCloseAll>: default: true |
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If true, print the "Close all folders" or "open all folders" |
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links. |
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=item * B<filterFunc>: default: sub {return 1;} (accept everything) |
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A function that takes the resource object as its only parameter and |
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returns a true or false value. If true, the resource is displayed. If |
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false, it is simply skipped in the display. |
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=item * B<suppressEmptySequences>: default: false |
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If you're using a filter function, and displaying sequences to orient |
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the user, then frequently some sequences will be empty. Setting this to |
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true will cause those sequences not to display, so as not to confuse the |
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user into thinking that if the sequence is there there should be things |
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under it; for example, see the "Show Uncompleted Homework" view on the |
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B<NAV> screen. |
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|
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=item * B<suppressNavmaps>: default: false |
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If true, will not display Navigate Content resources. |
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=back |
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=head2 Additional Info |
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|
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In addition to the parameters you can pass to the renderer, which will |
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be passed through unchange to the column renderers, the renderer will |
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generate the following information which your renderer may find |
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useful: |
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|
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=over 4 |
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=item * B<counter>: |
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Contains the number of rows printed. Useful after calling the render |
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function, as you can detect whether anything was printed at all. |
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=item * B<isNewBranch>: |
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Useful for renderers: If this resource is currently the first resource |
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of a new branch, this will be true. The Resource column (leftmost in the |
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navmaps screen) uses this to display the "new branch" icon |
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=back |
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=cut |
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|
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=head1 SUBROUTINES |
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|
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=over |
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=item update() |
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=item addToFilter() |
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Convenience functions: Returns a string that adds or subtracts |
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the second argument from the first hash, appropriate for the |
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query string that determines which folders to recurse on |
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=item removeFromFilter() |
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=item getLinkForResource() |
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Convenience function: Given a stack returned from getStack on the iterator, |
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return the correct src() value. |
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=item getDescription() |
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Convenience function: This separates the logic of how to create |
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the problem text strings ("Due: DATE", "Open: DATE", "Not yet assigned", |
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etc.) into a separate function. It takes a resource object as the |
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first parameter, and the part number of the resource as the second. |
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It's basically a big switch statement on the status of the resource. |
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|
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=item dueInLessThan24Hours() |
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Convenience function, so others can use it: Is the problem due in less than 24 hours, and still can be done? |
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|
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=item lastTry() |
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Convenience function, so others can use it: Is there only one try remaining for the |
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part, with more than one try to begin with, not due yet and still can be done? |
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|
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=item advancedUser() |
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This puts a human-readable name on the env variable. |
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|
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=item timeToHumanString() |
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|
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timeToHumanString takes a time number and converts it to a |
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human-readable representation, meant to be used in the following |
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manner: |
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=over 4 |
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=item * print "Due $timestring" |
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|
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=item * print "Open $timestring" |
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|
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=item * print "Answer available $timestring" |
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|
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=back |
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|
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Very, very, very, VERY English-only... goodness help a localizer on |
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this func... |
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|
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=item resource() |
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|
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returns 0 |
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|
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=item communication_status() |
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|
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returns 1 |
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|
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=item quick_status() |
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|
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returns 2 |
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|
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=item long_status() |
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returns 3 |
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=item part_status_summary() |
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returns 4 |
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=item render_resource() |
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=item render_communication_status() |
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|
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=item render_quick_status() |
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|
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=item render_long_status() |
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|
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=item render_parts_summary_status() |
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|
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=item setDefault() |
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|
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=item cmp_title() |
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|
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=item render() |
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|
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=item add_linkitem() |
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|
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=item show_linkitems() |
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|
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=back |
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|
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=cut |
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|
| package Apache::lonnavmaps; |
package Apache::lonnavmaps; |
| |
|
| use strict; |
use strict; |
| use Apache::Constants qw(:common :http); |
use GDBM_File; |
| use Apache::lonnet(); |
|
| use Apache::loncommon(); |
use Apache::loncommon(); |
| use HTML::TokeParser; |
use Apache::lonenc(); |
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use Apache::lonlocal; |
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use Apache::lonnet; |
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|
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use POSIX qw (floor strftime); |
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use Time::HiRes qw( gettimeofday tv_interval ); |
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use LONCAPA; |
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use DateTime(); |
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|
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# symbolic constants |
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sub SYMB { return 1; } |
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sub URL { return 2; } |
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sub NOTHING { return 3; } |
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|
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# Some data |
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|
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my $resObj = "Apache::lonnavmaps::resource"; |
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|
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# Keep these mappings in sync with lonquickgrades, which usesthe colors |
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# instead of the icons. |
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my %statusIconMap = |
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( |
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$resObj->CLOSED => '', |
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$resObj->OPEN => 'navmap.open.gif', |
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$resObj->CORRECT => 'navmap.correct.gif', |
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$resObj->PARTIALLY_CORRECT => 'navmap.partial.gif', |
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$resObj->INCORRECT => 'navmap.wrong.gif', |
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$resObj->ATTEMPTED => 'navmap.ellipsis.gif', |
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$resObj->ERROR => '' |
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); |
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|
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my %iconAltTags = #texthash does not work here |
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( 'navmap.correct.gif' => 'Correct', |
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'navmap.wrong.gif' => 'Incorrect', |
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'navmap.open.gif' => 'Open', |
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'navmap.partial.gif' => 'Partially Correct', |
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'navmap.ellipsis.gif' => 'Attempted', |
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); |
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|
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# Defines a status->color mapping, null string means don't color |
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my %colormap = |
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( $resObj->NETWORK_FAILURE => '', |
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$resObj->CORRECT => '', |
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$resObj->EXCUSED => '#3333FF', |
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$resObj->PAST_DUE_ANSWER_LATER => '', |
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$resObj->PAST_DUE_NO_ANSWER => '', |
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$resObj->ANSWER_OPEN => '#006600', |
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$resObj->OPEN_LATER => '', |
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$resObj->TRIES_LEFT => '', |
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$resObj->INCORRECT => '', |
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$resObj->OPEN => '', |
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$resObj->NOTHING_SET => '', |
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$resObj->CREDIT_ATTEMPTED => '', |
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$resObj->ATTEMPTED => '', |
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$resObj->ANSWER_SUBMITTED => '', |
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$resObj->PARTIALLY_CORRECT => '#006600' |
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); |
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# And a special case in the nav map; what to do when the assignment |
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# is not yet done and due in less than 24 hours |
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my $hurryUpColor = "#FF0000"; |
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|
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my $future_slots_checked = 0; |
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my $future_slots = 0; |
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|
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sub close { |
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if ($env{'environment.remotenavmap'} ne 'on') { return ''; } |
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return(<<ENDCLOSE); |
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<script type="text/javascript"> |
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window.status='Accessing Nav Control'; |
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menu=window.open("/adm/rat/empty.html","loncapanav", |
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"height=600,width=400,scrollbars=1"); |
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window.status='Closing Nav Control'; |
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menu.close(); |
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window.status='Done.'; |
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</script> |
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ENDCLOSE |
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} |
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|
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sub update { |
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if ($env{'environment.remotenavmap'} ne 'on') { return ''; } |
| |
if (!$env{'request.course.id'}) { return ''; } |
| |
if ($ENV{'REQUEST_URI'}=~m|^/adm/navmaps|) { return ''; } |
| |
return(<<ENDUPDATE); |
| |
<form name="navform"></form> |
| |
<script type="text/javascript"> |
| |
this.document.navform.action='/adm/navmaps#curloc'; |
| |
this.document.navform.target='loncapanav'; |
| |
this.document.navform.submit(); |
| |
</script> |
| |
ENDUPDATE |
| |
} |
| |
|
| |
|
| |
sub addToFilter { |
| |
my $hashIn = shift; |
| |
my $addition = shift; |
| |
my %hash = %$hashIn; |
| |
$hash{$addition} = 1; |
| |
|
| |
return join (",", keys(%hash)); |
| |
} |
| |
|
| |
sub removeFromFilter { |
| |
my $hashIn = shift; |
| |
my $subtraction = shift; |
| |
my %hash = %$hashIn; |
| |
|
| |
delete $hash{$subtraction}; |
| |
return join(",", keys(%hash)); |
| |
} |
| |
|
| |
sub getLinkForResource { |
| |
my $stack = shift; |
| |
my $res; |
| |
|
| |
# Check to see if there are any pages in the stack |
| |
foreach $res (@$stack) { |
| |
if (defined($res)) { |
| |
my $anchor; |
| |
if ($res->is_page()) { |
| |
foreach my $item (@$stack) { if (defined($item)) { $anchor = $item; } } |
| |
$anchor=&escape($anchor->shown_symb()); |
| |
return ($res->link(),$res->shown_symb(),$anchor); |
| |
} |
| |
# in case folder was skipped over as "only sequence" |
| |
my ($map,$id,$src)=&Apache::lonnet::decode_symb($res->symb()); |
| |
if ($map=~/\.page$/) { |
| |
my $url=&Apache::lonnet::clutter($map); |
| |
$anchor=&escape($res->shown_symb()); |
| |
return ($url,$res->shown_symb(),$anchor); |
| |
} |
| |
} |
| |
} |
| |
|
| |
# Failing that, return the src of the last resource that is defined |
| |
# (when we first recurse on a map, it puts an undefined resource |
| |
# on the bottom because $self->{HERE} isn't defined yet, and we |
| |
# want the src for the map anyhow) |
| |
foreach my $item (@$stack) { |
| |
if (defined($item)) { $res = $item; } |
| |
} |
| |
|
| |
if ($res) { |
| |
return ($res->link(),$res->shown_symb()); |
| |
} |
| |
return; |
| |
} |
| |
|
| |
|
| |
|
| |
sub getDescription { |
| |
my $res = shift; |
| |
my $part = shift; |
| |
my $status = $res->status($part); |
| |
|
| |
my $open = $res->opendate($part); |
| |
my $due = $res->duedate($part); |
| |
my $answer = $res->answerdate($part); |
| |
|
| |
if ($status == $res->NETWORK_FAILURE) { |
| |
return &mt("Having technical difficulties; please check status later"); |
| |
} |
| |
if ($status == $res->NOTHING_SET) { |
| |
return &mt("Not currently assigned."); |
| |
} |
| |
if ($status == $res->OPEN_LATER) { |
| |
return &mt("Open ") .timeToHumanString($open,'start'); |
| |
} |
| |
if ($res->simpleStatus($part) == $res->OPEN) { |
| |
unless (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) { |
| |
my ($slot_status,$slot_time,$slot_name)=$res->check_for_slot($part); |
| |
if ($slot_status == $res->UNKNOWN) { |
| |
return &mt('Reservation status unknown'); |
| |
} elsif ($slot_status == $res->RESERVED) { |
| |
return &mt('Reserved - ends [_1]', |
| |
timeToHumanString($slot_time,'end')); |
| |
} elsif ($slot_status == $res->RESERVED_LOCATION) { |
| |
return &mt('Reserved - specific location(s) - ends [_1]', |
| |
timeToHumanString($slot_time,'end')); |
| |
} elsif ($slot_status == $res->RESERVED_LATER) { |
| |
return &mt('Reserved - next open [_1]', |
| |
timeToHumanString($slot_time,'start')); |
| |
} elsif ($slot_status == $res->RESERVABLE) { |
| |
return &mt('Reservable ending [_1]', |
| |
timeToHumanString($slot_time,'end')); |
| |
} elsif ($slot_status == $res->RESERVABLE_LATER) { |
| |
return &mt('Reservable starting [_1]', |
| |
timeToHumanString($slot_time,'start')); |
| |
} elsif ($slot_status == $res->NOT_IN_A_SLOT) { |
| |
return &mt('Reserve a time/place to work'); |
| |
} elsif ($slot_status == $res->NOTRESERVABLE) { |
| |
return &mt('Reservation not available'); |
| |
} elsif ($slot_status == $res->WAITING_FOR_GRADE) { |
| |
return &mt('Submission in grading queue'); |
| |
} |
| |
} |
| |
} |
| |
if ($status == $res->OPEN) { |
| |
if ($due) { |
| |
if ($res->is_practice()) { |
| |
return &mt("Closes ")." " .timeToHumanString($due,'start'); |
| |
} else { |
| |
return &mt("Due")." " .timeToHumanString($due,'end'); |
| |
} |
| |
} else { |
| |
return &mt("Open, no due date"); |
| |
} |
| |
} |
| |
if ($status == $res->PAST_DUE_ANSWER_LATER) { |
| |
return &mt("Answer open")." " .timeToHumanString($answer,'start'); |
| |
} |
| |
if ($status == $res->PAST_DUE_NO_ANSWER) { |
| |
if ($res->is_practice()) { |
| |
return &mt("Closed")." " . timeToHumanString($due,'start'); |
| |
} else { |
| |
return &mt("Was due")." " . timeToHumanString($due,'end'); |
| |
} |
| |
} |
| |
if (($status == $res->ANSWER_OPEN || $status == $res->PARTIALLY_CORRECT) |
| |
&& $res->handgrade($part) ne 'yes') { |
| |
return &mt("Answer available"); |
| |
} |
| |
if ($status == $res->EXCUSED) { |
| |
return &mt("Excused by instructor"); |
| |
} |
| |
if ($status == $res->ATTEMPTED) { |
| |
if ($res->is_anonsurvey($part) || $res->is_survey($part)) { |
| |
return &mt("Survey submission recorded"); |
| |
} else { |
| |
return &mt("Answer submitted, not yet graded"); |
| |
} |
| |
} |
| |
if ($status == $res->CREDIT_ATTEMPTED) { |
| |
if ($res->is_anonsurvey($part) || $res->is_survey($part)) { |
| |
return &mt("Credit for survey submission"); |
| |
} |
| |
} |
| |
if ($status == $res->TRIES_LEFT) { |
| |
my $tries = $res->tries($part); |
| |
my $maxtries = $res->maxtries($part); |
| |
my $triesString = ""; |
| |
if ($tries && $maxtries) { |
| |
$triesString = '<font size="-1"><i>('.&mt('[_1] of [quant,_2,try,tries] used',$tries,$maxtries).')</i></font>'; |
| |
if ($maxtries > 1 && $maxtries - $tries == 1) { |
| |
$triesString = "<b>$triesString</b>"; |
| |
} |
| |
} |
| |
if ($due) { |
| |
return &mt("Due")." " . timeToHumanString($due,'end') . |
| |
" $triesString"; |
| |
} else { |
| |
return &mt("No due date")." $triesString"; |
| |
} |
| |
} |
| |
if ($status == $res->ANSWER_SUBMITTED) { |
| |
return &mt('Answer submitted'); |
| |
} |
| |
} |
| |
|
| |
|
| |
sub dueInLessThan24Hours { |
| |
my $res = shift; |
| |
my $part = shift; |
| |
my $status = $res->status($part); |
| |
|
| |
return ($status == $res->OPEN() || |
| |
$status == $res->TRIES_LEFT()) && |
| |
$res->duedate($part) && $res->duedate($part) < time()+(24*60*60) && |
| |
$res->duedate($part) > time(); |
| |
} |
| |
|
| |
|
| |
sub lastTry { |
| |
my $res = shift; |
| |
my $part = shift; |
| |
|
| |
my $tries = $res->tries($part); |
| |
my $maxtries = $res->maxtries($part); |
| |
return $tries && $maxtries && $maxtries > 1 && |
| |
$maxtries - $tries == 1 && $res->duedate($part) && |
| |
$res->duedate($part) > time(); |
| |
} |
| |
|
| |
|
| |
sub advancedUser { |
| |
return $env{'request.role.adv'}; |
| |
} |
| |
|
| |
sub timeToHumanString { |
| |
my ($time,$type,$format) = @_; |
| |
|
| |
# zero, '0' and blank are bad times |
| |
if (!$time) { |
| |
return &mt('never'); |
| |
} |
| |
unless (&Apache::lonlocal::current_language()=~/^en/) { |
| |
return &Apache::lonlocal::locallocaltime($time); |
| |
} |
| |
my $now = time(); |
| |
|
| |
# Positive = future |
| |
my $delta = $time - $now; |
| |
|
| |
my $minute = 60; |
| |
my $hour = 60 * $minute; |
| |
my $day = 24 * $hour; |
| |
my $week = 7 * $day; |
| |
my $inPast = 0; |
| |
|
| |
# Logic in comments: |
| |
# Is it now? (extremely unlikely) |
| |
if ( $delta == 0 ) { |
| |
return "this instant"; |
| |
} |
| |
|
| |
if ($delta < 0) { |
| |
$inPast = 1; |
| |
$delta = -$delta; |
| |
} |
| |
|
| |
if ( $delta > 0 ) { |
| |
|
| |
my $tense = $inPast ? " ago" : ""; |
| |
my $prefix = $inPast ? "" : "in "; |
| |
|
| |
# Less than a minute |
| |
if ( $delta < $minute ) { |
| |
if ($delta == 1) { return "${prefix}1 second$tense"; } |
| |
return "$prefix$delta seconds$tense"; |
| |
} |
| |
|
| |
# Less than an hour |
| |
if ( $delta < $hour ) { |
| |
# If so, use minutes |
| |
my $minutes = floor($delta / 60); |
| |
if ($minutes == 1) { return "${prefix}1 minute$tense"; } |
| |
return "$prefix$minutes minutes$tense"; |
| |
} |
| |
|
| |
# Is it less than 24 hours away? If so, |
| |
# display hours + minutes |
| |
if ( $delta < $hour * 24) { |
| |
my $hours = floor($delta / $hour); |
| |
my $minutes = floor(($delta % $hour) / $minute); |
| |
my $hourString = "$hours hours"; |
| |
my $minuteString = ", $minutes minutes"; |
| |
if ($hours == 1) { |
| |
$hourString = "1 hour"; |
| |
} |
| |
if ($minutes == 1) { |
| |
$minuteString = ", 1 minute"; |
| |
} |
| |
if ($minutes == 0) { |
| |
$minuteString = ""; |
| |
} |
| |
return "$prefix$hourString$minuteString$tense"; |
| |
} |
| |
|
| |
my $dt = DateTime->from_epoch(epoch => $time) |
| |
->set_time_zone(&Apache::lonlocal::gettimezone()); |
| |
|
| |
# If there's a caller supplied format, use it. |
| |
|
| |
if ($format ne '') { |
| |
my $timeStr = $dt->strftime($format); |
| |
return $timeStr.' ('.$dt->time_zone_short_name().')'; |
| |
} |
| |
|
| |
# Less than 5 days away, display day of the week and |
| |
# HH:MM |
| |
|
| |
if ( $delta < $day * 5 ) { |
| |
my $timeStr = $dt->strftime("%A, %b %e at %I:%M %P (%Z)"); |
| |
$timeStr =~ s/12:00 am/00:00/; |
| |
$timeStr =~ s/12:00 pm/noon/; |
| |
return ($inPast ? "last " : "this ") . |
| |
$timeStr; |
| |
} |
| |
|
| |
my $conjunction='on'; |
| |
if ($type eq 'start') { |
| |
$conjunction='at'; |
| |
} elsif ($type eq 'end') { |
| |
$conjunction='by'; |
| |
} |
| |
# Is it this year? |
| |
my $dt_now = DateTime->from_epoch(epoch => $now) |
| |
->set_time_zone(&Apache::lonlocal::gettimezone()); |
| |
if ( $dt->year() == $dt_now->year()) { |
| |
# Return on Month Day, HH:MM meridian |
| |
my $timeStr = $dt->strftime("$conjunction %A, %b %e at %I:%M %P (%Z)"); |
| |
$timeStr =~ s/12:00 am/00:00/; |
| |
$timeStr =~ s/12:00 pm/noon/; |
| |
return $timeStr; |
| |
} |
| |
|
| |
# Not this year, so show the year |
| |
my $timeStr = |
| |
$dt->strftime("$conjunction %A, %b %e %Y at %I:%M %P (%Z)"); |
| |
$timeStr =~ s/12:00 am/00:00/; |
| |
$timeStr =~ s/12:00 pm/noon/; |
| |
return $timeStr; |
| |
} |
| |
} |
| |
|
| |
|
| |
sub resource { return 0; } |
| |
sub communication_status { return 1; } |
| |
sub quick_status { return 2; } |
| |
sub long_status { return 3; } |
| |
sub part_status_summary { return 4; } |
| |
|
| |
sub render_resource { |
| |
my ($resource, $part, $params) = @_; |
| |
|
| |
my $nonLinkedText = ''; # stuff after resource title not in link |
| |
|
| |
my $link = $params->{"resourceLink"}; |
| |
|
| |
# The URL part is not escaped at this point, but the symb is... |
| |
|
| |
my $src = $resource->src(); |
| |
my $it = $params->{"iterator"}; |
| |
my $filter = $it->{FILTER}; |
| |
|
| |
my $title = $resource->compTitle(); |
| |
|
| |
my $partLabel = ""; |
| |
my $newBranchText = ""; |
| |
my $location=&Apache::loncommon::lonhttpdurl("/adm/lonIcons"); |
| |
# If this is a new branch, label it so |
| |
if ($params->{'isNewBranch'}) { |
| |
$newBranchText = "<img src='$location/branch.gif' alt=".mt('Branch')." />"; |
| |
} |
| |
|
| |
# links to open and close the folder |
| |
|
| |
my $whitespace = $location.'/whitespace_21.gif'; |
| |
my $linkopen = "<img src='$whitespace' alt='' />"."<a href=\"$link\">"; |
| |
my $linkclose = "</a>"; |
| |
|
| |
# Default icon: unknown page |
| |
my $icon = "<img class=\"LC_contentImage\" src='$location/unknown.gif' alt='' />"; |
| |
|
| |
if ($resource->is_problem()) { |
| |
if ($part eq '0' || $params->{'condensed'}) { |
| |
$icon = '<img class="LC_contentImage" src="'.$location.'/'; |
| |
if ($resource->is_task()) { |
| |
$icon .= 'task.gif" alt="'.&mt('Task'); |
| |
} else { |
| |
$icon .= 'problem.gif" alt="'.&mt('Problem'); |
| |
} |
| |
$icon .='" />'; |
| |
} else { |
| |
$icon = $params->{'indentString'}; |
| |
} |
| |
} else { |
| |
$icon = "<img class=\"LC_contentImage\" src='".&Apache::loncommon::icon($resource->src)."' alt='' />"; |
| |
} |
| |
|
| |
# Display the correct map icon to open or shut map |
| |
if ($resource->is_map()) { |
| |
my $mapId = $resource->map_pc(); |
| |
my $nowOpen = !defined($filter->{$mapId}); |
| |
if ($it->{CONDITION}) { |
| |
$nowOpen = !$nowOpen; |
| |
} |
| |
|
| |
my $folderType = $resource->is_sequence() ? 'folder' : 'page'; |
| |
my $title=$resource->title; |
| |
$title=~s/\"/\&qout;/g; |
| |
if (!$params->{'resource_no_folder_link'}) { |
| |
$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') . '.gif'; |
| |
$icon = "<img src='$location/arrow." . ($nowOpen ? 'closed' : 'open') . ".gif' alt='' />" |
| |
."<img class=\"LC_contentImage\" src='$location/$icon' alt=\"" |
| |
.($nowOpen ? &mt('Open Folder') : &mt('Close Folder')).' '.$title."\" />"; |
| |
$linkopen = "<a href=\"" . $params->{'url'} . '?' . |
| |
$params->{'queryString'} . '&filter='; |
| |
$linkopen .= ($nowOpen xor $it->{CONDITION}) ? |
| |
addToFilter($filter, $mapId) : |
| |
removeFromFilter($filter, $mapId); |
| |
$linkopen .= "&condition=" . $it->{CONDITION} . '&hereType=' |
| |
. $params->{'hereType'} . '&here=' . |
| |
&escape($params->{'here'}) . |
| |
'&jump=' . |
| |
&escape($resource->symb()) . |
| |
"&folderManip=1\">"; |
| |
|
| |
} else { |
| |
# Don't allow users to manipulate folder |
| |
$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') . '.gif'; |
| |
$icon = "<img class=\"LC_space\" src='$whitespace' alt='' />"."<img class=\"LC_contentImage\" src='$location/$icon' alt=\"".($nowOpen ? &mt('Open Folder') : &mt('Close Folder')).' '.$title."\" />"; |
| |
|
| |
$linkopen = ""; |
| |
$linkclose = ""; |
| |
} |
| |
} |
| |
|
| |
if ($resource->randomout()) { |
| |
$nonLinkedText .= ' <i>('.&mt('hidden').')</i> '; |
| |
} |
| |
if (!$resource->condval()) { |
| |
$nonLinkedText .= ' <i>('.&mt('conditionally hidden').')</i> '; |
| |
} |
| |
if (($resource->is_practice()) && ($resource->is_raw_problem())) { |
| |
$nonLinkedText .=' <font color="green"><b>'.&mt('not graded').'</b></font>'; |
| |
} |
| |
|
| |
# We're done preparing and finally ready to start the rendering |
| |
my $result = '<td class="LC_middle">'; |
| |
my $newfolderType = $resource->is_sequence() ? 'folder' : 'page'; |
| |
|
| |
my $indentLevel = $params->{'indentLevel'}; |
| |
if ($newBranchText) { $indentLevel--; } |
| |
|
| |
# print indentation |
| |
for (my $i = 0; $i < $indentLevel; $i++) { |
| |
$result .= $params->{'indentString'}; |
| |
} |
| |
|
| |
# Decide what to display |
| |
$result .= "$newBranchText$linkopen$icon$linkclose"; |
| |
|
| |
my $curMarkerBegin = ''; |
| |
my $curMarkerEnd = ''; |
| |
|
| |
# Is this the current resource? |
| |
if (!$params->{'displayedHereMarker'} && |
| |
$resource->symb() eq $params->{'here'} ) { |
| |
$curMarkerBegin = '<em>'; |
| |
$curMarkerEnd = '</em>'; |
| |
$params->{'displayedHereMarker'} = 1; |
| |
} |
| |
|
| |
if ($resource->is_problem() && $part ne '0' && |
| |
!$params->{'condensed'}) { |
| |
my $displaypart=$resource->part_display($part); |
| |
$partLabel = " (".&mt('Part: [_1]', $displaypart).")"; |
| |
if ($link!~/\#/) { $link.='#'.&escape($part); } |
| |
$title = ""; |
| |
} |
| |
|
| |
if ($params->{'condensed'} && $resource->countParts() > 1) { |
| |
$nonLinkedText .= ' ('.&mt('[_1] parts', $resource->countParts()).')'; |
| |
} |
| |
|
| |
my $target; |
| |
if ($env{'environment.remotenavmap'} eq 'on') { |
| |
$target=' target="loncapaclient" '; |
| |
} |
| |
if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) { |
| |
$result .= "$curMarkerBegin<a $target href=\"$link\">$title$partLabel</a>$curMarkerEnd$nonLinkedText</td>"; |
| |
} else { |
| |
$result .= "$curMarkerBegin$linkopen$title$partLabel</a>$curMarkerEnd$nonLinkedText</td>"; |
| |
} |
| |
|
| |
return $result; |
| |
} |
| |
|
| |
sub render_communication_status { |
| |
my ($resource, $part, $params) = @_; |
| |
my $discussionHTML = ""; my $feedbackHTML = ""; my $errorHTML = ""; |
| |
|
| |
my $link = $params->{"resourceLink"}; |
| |
my $target; |
| |
if ($env{'environment.remotenavmap'} eq 'on') { |
| |
$target=' target="loncapaclient" '; |
| |
} |
| |
my $linkopen = "<a $target href=\"$link\">"; |
| |
my $linkclose = "</a>"; |
| |
my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc"); |
| |
if ($resource->hasDiscussion()) { |
| |
$discussionHTML = $linkopen . |
| |
'<img alt="'.&mt('New Discussion').'" src="'.$location.'/chat.gif" title="'.&mt('New Discussion').'"/>' . |
| |
$linkclose; |
| |
} |
| |
|
| |
if ($resource->getFeedback()) { |
| |
my $feedback = $resource->getFeedback(); |
| |
foreach my $msgid (split(/\,/, $feedback)) { |
| |
if ($msgid) { |
| |
$feedbackHTML .= ' <a '.$target.' href="/adm/email?display=' |
| |
. &escape($msgid) . '">' |
| |
. '<img alt="'.&mt('New E-mail').'" src="'.$location.'/feedback.gif" title="'.&mt('New E-mail').'"/></a>'; |
| |
} |
| |
} |
| |
} |
| |
|
| |
if ($resource->getErrors()) { |
| |
my $errors = $resource->getErrors(); |
| |
my $errorcount = 0; |
| |
foreach my $msgid (split(/,/, $errors)) { |
| |
last if ($errorcount>=10); # Only output 10 bombs maximum |
| |
if ($msgid) { |
| |
$errorcount++; |
| |
$errorHTML .= ' <a '.$target.' href="/adm/email?display=' |
| |
. &escape($msgid) . '">' |
| |
. '<img alt="'.&mt('New Error').'" src="'.$location.'/bomb.gif" title="'.&mt('New Error').'"/></a>'; |
| |
} |
| |
} |
| |
} |
| |
|
| |
if ($params->{'multipart'} && $part != '0') { |
| |
$discussionHTML = $feedbackHTML = $errorHTML = ''; |
| |
} |
| |
return "<td class=\"LC_middle\">$discussionHTML$feedbackHTML$errorHTML </td>"; |
| |
|
| |
} |
| |
sub render_quick_status { |
| |
my ($resource, $part, $params) = @_; |
| |
my $result = ""; |
| |
my $firstDisplayed = !$params->{'condensed'} && |
| |
$params->{'multipart'} && $part eq "0"; |
| |
|
| |
my $link = $params->{"resourceLink"}; |
| |
my $target; |
| |
if ($env{'environment.remotenavmap'} eq 'on') { |
| |
$target=' target="loncapaclient" '; |
| |
} |
| |
my $linkopen = "<a $target href=\"$link\">"; |
| |
my $linkclose = "</a>"; |
| |
|
| |
$result .= '<td class="LC_middle">'; |
| |
if ($resource->is_problem() && |
| |
!$firstDisplayed) { |
| |
my $icon = $statusIconMap{$resource->simpleStatus($part)}; |
| |
my $alt = $iconAltTags{$icon}; |
| |
if ($icon) { |
| |
my $location= |
| |
&Apache::loncommon::lonhttpdurl("/adm/lonIcons/$icon"); |
| |
$result .= $linkopen.'<img src="'.$location.'" alt="'.&mt($alt).'" title="'.&mt($alt).'" />'.$linkclose; |
| |
} else { |
| |
$result .= " "; |
| |
} |
| |
} else { # not problem, no icon |
| |
$result .= " "; |
| |
} |
| |
$result .= "</td>\n"; |
| |
return $result; |
| |
} |
| |
sub render_long_status { |
| |
my ($resource, $part, $params) = @_; |
| |
my $result = '<td class="LC_middle LC_right">'; |
| |
my $firstDisplayed = !$params->{'condensed'} && |
| |
$params->{'multipart'} && $part eq "0"; |
| |
|
| |
my $color; |
| |
if ($resource->is_problem() || $resource->is_practice()) { |
| |
$color = $colormap{$resource->status}; |
| |
|
| |
if (dueInLessThan24Hours($resource, $part) || |
| |
lastTry($resource, $part)) { |
| |
$color = $hurryUpColor; |
| |
} |
| |
} |
| |
|
| |
if ($resource->kind() eq "res" && |
| |
$resource->is_raw_problem() && |
| |
!$firstDisplayed) { |
| |
if ($color) {$result .= "<font color=\"$color\"><b>"; } |
| |
$result .= getDescription($resource, $part); |
| |
if ($color) {$result .= "</b></font>"; } |
| |
} |
| |
if ($resource->is_map() && &advancedUser() && $resource->randompick()) { |
| |
$result .= &mt('(randomly select [_1])', $resource->randompick()); |
| |
} |
| |
if ($resource->is_map() && &advancedUser() && $resource->randomorder()) { |
| |
$result .= &mt('(randomly ordered)'); |
| |
} |
| |
|
| |
# Debugging code |
| |
#$result .= " " . $resource->awarded($part) . '/' . $resource->weight($part) . |
| |
# ' - Part: ' . $part; |
| |
|
| |
$result .= "</td>\n"; |
| |
|
| |
return $result; |
| |
} |
| |
|
| |
# Colors obtained by taking the icons, matching the colors, and |
| |
# possibly reducing the Value (HSV) of the color, if it's too bright |
| |
# for text, generally by one third or so. |
| |
my %statusColors = |
| |
( |
| |
$resObj->CLOSED => '#000000', |
| |
$resObj->OPEN => '#998b13', |
| |
$resObj->CORRECT => '#26933f', |
| |
$resObj->INCORRECT => '#c48207', |
| |
$resObj->ATTEMPTED => '#a87510', |
| |
$resObj->ERROR => '#000000' |
| |
); |
| |
my %statusStrings = |
| |
( |
| |
$resObj->CLOSED => 'Not yet open', |
| |
$resObj->OPEN => 'Open', |
| |
$resObj->CORRECT => 'Correct', |
| |
$resObj->INCORRECT => 'Incorrect', |
| |
$resObj->ATTEMPTED => 'Attempted', |
| |
$resObj->ERROR => 'Network Error' |
| |
); |
| |
my @statuses = ($resObj->CORRECT, $resObj->ATTEMPTED, $resObj->INCORRECT, $resObj->OPEN, $resObj->CLOSED, $resObj->ERROR); |
| |
|
| |
sub render_parts_summary_status { |
| |
my ($resource, $part, $params) = @_; |
| |
if (!$resource->is_problem() && !$resource->contains_problem) { return '<td></td>'; } |
| |
if ($params->{showParts}) { |
| |
return '<td></td>'; |
| |
} |
| |
|
| |
my $td = "<td align='right'>\n"; |
| |
my $endtd = "</td>\n"; |
| |
my @probs; |
| |
|
| |
if ($resource->contains_problem) { |
| |
@probs=$resource->retrieveResources($resource,sub { $_[0]->is_problem() },1,0); |
| |
} else { |
| |
@probs=($resource); |
| |
} |
| |
my $return; |
| |
my %overallstatus; |
| |
my $totalParts; |
| |
foreach my $resource (@probs) { |
| |
# If there is a single part, just show the simple status |
| |
if ($resource->singlepart()) { |
| |
my $status = $resource->simpleStatus(${$resource->parts}[0]); |
| |
$overallstatus{$status}++; |
| |
$totalParts++; |
| |
next; |
| |
} |
| |
# Now we can be sure the $part doesn't really matter. |
| |
my $statusCount = $resource->simpleStatusCount(); |
| |
my @counts; |
| |
foreach my $status (@statuses) { |
| |
# decouple display order from the simpleStatusCount order |
| |
my $slot = Apache::lonnavmaps::resource::statusToSlot($status); |
| |
if ($statusCount->[$slot]) { |
| |
$overallstatus{$status}+=$statusCount->[$slot]; |
| |
$totalParts+=$statusCount->[$slot]; |
| |
} |
| |
} |
| |
} |
| |
$return.= $td . $totalParts . ' parts: '; |
| |
foreach my $status (@statuses) { |
| |
if ($overallstatus{$status}) { |
| |
$return.="<font color='" . $statusColors{$status} . |
| |
"'>" . $overallstatus{$status} . ' ' |
| |
. $statusStrings{$status} . "</font>"; |
| |
} |
| |
} |
| |
$return.= $endtd; |
| |
return $return; |
| |
} |
| |
|
| |
my @preparedColumns = (\&render_resource, \&render_communication_status, |
| |
\&render_quick_status, \&render_long_status, |
| |
\&render_parts_summary_status); |
| |
|
| |
sub setDefault { |
| |
my ($val, $default) = @_; |
| |
if (!defined($val)) { return $default; } |
| |
return $val; |
| |
} |
| |
|
| |
sub cmp_title { |
| |
my ($atitle,$btitle) = (lc($_[0]->compTitle),lc($_[1]->compTitle)); |
| |
$atitle=~s/^\s*//; |
| |
$btitle=~s/^\s*//; |
| |
return $atitle cmp $btitle; |
| |
} |
| |
|
| |
sub render { |
| |
my $args = shift; |
| |
&Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING}); |
| |
my $result = ''; |
| |
# Configure the renderer. |
| |
my $cols = $args->{'cols'}; |
| |
if (!defined($cols)) { |
| |
# no columns, no nav maps. |
| |
return ''; |
| |
} |
| |
my $navmap; |
| |
if (defined($args->{'navmap'})) { |
| |
$navmap = $args->{'navmap'}; |
| |
} |
| |
|
| |
my $r = $args->{'r'}; |
| |
my $queryString = $args->{'queryString'}; |
| |
my $jump = $args->{'jump'}; |
| |
my $here = $args->{'here'}; |
| |
my $suppressNavmap = setDefault($args->{'suppressNavmap'}, 0); |
| |
my $closeAllPages = setDefault($args->{'closeAllPages'}, 0); |
| |
my $currentJumpDelta = 2; # change this to change how many resources are displayed |
| |
# before the current resource when using #current |
| |
|
| |
# If we were passed 'here' information, we are not rendering |
| |
# after a folder manipulation, and we were not passed an |
| |
# iterator, make sure we open the folders to show the "here" |
| |
# marker |
| |
my $filterHash = {}; |
| |
# Figure out what we're not displaying |
| |
foreach my $item (split(/\,/, $env{"form.filter"})) { |
| |
if ($item) { |
| |
$filterHash->{$item} = "1"; |
| |
} |
| |
} |
| |
|
| |
# Filter: Remember filter function and add our own filter: Refuse |
| |
# to show hidden resources unless the user can see them. |
| |
my $userCanSeeHidden = advancedUser(); |
| |
my $filterFunc = setDefault($args->{'filterFunc'}, |
| |
sub {return 1;}); |
| |
if (!$userCanSeeHidden) { |
| |
# Without renaming the filterfunc, the server seems to go into |
| |
# an infinite loop |
| |
my $oldFilterFunc = $filterFunc; |
| |
$filterFunc = sub { my $res = shift; return !$res->randomout() && |
| |
&$oldFilterFunc($res);}; |
| |
} |
| |
|
| |
my $condition = 0; |
| |
if ($env{'form.condition'}) { |
| |
$condition = 1; |
| |
} |
| |
|
| |
if (!$env{'form.folderManip'} && !defined($args->{'iterator'})) { |
| |
# Step 1: Check to see if we have a navmap |
| |
if (!defined($navmap)) { |
| |
$navmap = Apache::lonnavmaps::navmap->new(); |
| |
if (!defined($navmap)) { |
| |
# no longer in course |
| |
return '<span class="LC_error">'.&mt('No course selected').'</span><br /> |
| |
<a href="/adm/roles">'.&mt('Select a course').'</a><br />'; |
| |
} |
| |
} |
| |
|
| |
# Step two: Locate what kind of here marker is necessary |
| |
# Determine where the "here" marker is and where the screen jumps to. |
| |
|
| |
if ($env{'form.postsymb'} ne '') { |
| |
$here = $jump = &Apache::lonnet::symbclean($env{'form.postsymb'}); |
| |
} elsif ($env{'form.postdata'} ne '') { |
| |
# couldn't find a symb, is there a URL? |
| |
my $currenturl = $env{'form.postdata'}; |
| |
#$currenturl=~s/^http\:\/\///; |
| |
#$currenturl=~s/^[^\/]+//; |
| |
|
| |
$here = $jump = &Apache::lonnet::symbread($currenturl); |
| |
} |
| |
if ($here eq '') { |
| |
my $last; |
| |
if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db', |
| |
&GDBM_READER(),0640)) { |
| |
$last=$hash{'last_known'}; |
| |
untie(%hash); |
| |
} |
| |
if ($last) { $here = $jump = $last; } |
| |
} |
| |
|
| |
# Step three: Ensure the folders are open |
| |
my $mapIterator = $navmap->getIterator(undef, undef, undef, 1); |
| |
my $curRes; |
| |
my $found = 0; |
| |
|
| |
# We only need to do this if we need to open the maps to show the |
| |
# current position. This will change the counter so we can't count |
| |
# for the jump marker with this loop. |
| |
while ($here && ($curRes = $mapIterator->next()) && !$found) { |
| |
if (ref($curRes) && $curRes->symb() eq $here) { |
| |
my $mapStack = $mapIterator->getStack(); |
| |
|
| |
# Ensure the parent maps are open |
| |
for my $map (@{$mapStack}) { |
| |
if ($condition) { |
| |
undef $filterHash->{$map->map_pc()}; |
| |
} else { |
| |
$filterHash->{$map->map_pc()} = 1; |
| |
} |
| |
} |
| |
$found = 1; |
| |
} |
| |
} |
| |
} |
| |
|
| |
if ( !defined($args->{'iterator'}) && $env{'form.folderManip'} ) { # we came from a user's manipulation of the nav page |
| |
# If this is a click on a folder or something, we want to preserve the "here" |
| |
# from the querystring, and get the new "jump" marker |
| |
$here = $env{'form.here'}; |
| |
$jump = $env{'form.jump'}; |
| |
} |
| |
|
| |
my $it = $args->{'iterator'}; |
| |
if (!defined($it)) { |
| |
# Construct a default iterator based on $env{'form.'} information |
| |
|
| |
# Step 1: Check to see if we have a navmap |
| |
if (!defined($navmap)) { |
| |
$navmap = Apache::lonnavmaps::navmap->new(); |
| |
if (!defined($navmap)) { |
| |
# no longer in course |
| |
return '<span class="LC_error">'.&mt('No course selected').'</span><br /> |
| |
<a href="/adm/roles">'.&mt('Select a course').'</a><br />'; |
| |
} |
| |
} |
| |
|
| |
# See if we're being passed a specific map |
| |
if ($args->{'iterator_map'}) { |
| |
my $map = $args->{'iterator_map'}; |
| |
$map = $navmap->getResourceByUrl($map); |
| |
my $firstResource = $map->map_start(); |
| |
my $finishResource = $map->map_finish(); |
| |
|
| |
$args->{'iterator'} = $it = $navmap->getIterator($firstResource, $finishResource, $filterHash, $condition); |
| |
} else { |
| |
$args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition,undef,$args->{'include_top_level_map'}); |
| |
} |
| |
} |
| |
|
| |
# (re-)Locate the jump point, if any |
| |
# Note this does not take filtering or hidden into account... need |
| |
# to be fixed? |
| |
my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0); |
| |
my $curRes; |
| |
my $foundJump = 0; |
| |
my $counter = 0; |
| |
|
| |
while (($curRes = $mapIterator->next()) && !$foundJump) { |
| |
if (ref($curRes)) { $counter++; } |
| |
|
| |
if (ref($curRes) && $jump eq $curRes->symb()) { |
| |
|
| |
# This is why we have to use the main iterator instead of the |
| |
# potentially faster DFS: The count has to be the same, so |
| |
# the order has to be the same, which DFS won't give us. |
| |
$args->{'currentJumpIndex'} = $counter; |
| |
$foundJump = 1; |
| |
} |
| |
} |
| |
|
| |
my $showParts = setDefault($args->{'showParts'}, 1); |
| |
my $condenseParts = setDefault($args->{'condenseParts'}, 1); |
| |
# keeps track of when the current resource is found, |
| |
# so we can back up a few and put the anchor above the |
| |
# current resource |
| |
my $printKey = $args->{'printKey'}; |
| |
my $printCloseAll = $args->{'printCloseAll'}; |
| |
if (!defined($printCloseAll)) { $printCloseAll = 1; } |
| |
|
| |
# Print key? |
| |
if ($printKey) { |
| |
$result .= '<table border="0" cellpadding="2" cellspacing="0">'; |
| |
$result.='<tr><td align="right" valign="bottom">Key: </td>'; |
| |
my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc"); |
| |
if ($navmap->{LAST_CHECK}) { |
| |
$result .= |
| |
'<img src="'.$location.'/chat.gif" alt="" /> '.&mt('New discussion since').' '. |
| |
strftime("%A, %b %e at %I:%M %P", localtime($navmap->{LAST_CHECK})). |
| |
'</td><td align="center" valign="bottom"> '. |
| |
'<img src="'.$location.'/feedback.gif" alt="" /> '.&mt('New message (click to open)').'<p>'. |
| |
'</td>'; |
| |
} else { |
| |
$result .= '<td align="center" valign="bottom"> '. |
| |
'<img src="'.$location.'/chat.gif" alt="" /> '.&mt('Discussions').'</td><td align="center" valign="bottom">'. |
| |
' <img src="'.$location.'/feedback.gif" alt="" /> '.&mt('New message (click to open)'). |
| |
'</td>'; |
| |
} |
| |
|
| |
$result .= '</tr></table>'; |
| |
} |
| |
|
| |
if ($printCloseAll && !$args->{'resource_no_folder_link'}) { |
| |
my ($link,$text); |
| |
if ($condition) { |
| |
$link='navmaps?condition=0&filter=&'.$queryString. |
| |
'&here='.&escape($here); |
| |
$text='Close all folders'; |
| |
} else { |
| |
$link='navmaps?condition=1&filter=&'.$queryString. |
| |
'&here='.&escape($here); |
| |
$text='Open all folders'; |
| |
} |
| |
if ($env{'form.register'}) { |
| |
$link .= '&register='.$env{'form.register'}; |
| |
} |
| |
if ($args->{'caller'} eq 'navmapsdisplay') { |
| |
&add_linkitem($args->{'linkitems'},'changefolder', |
| |
"location.href='$link'",$text); |
| |
} else { |
| |
$result.= '<a href="'.$link.'">'.&mt($text).'</a>'; |
| |
} |
| |
$result .= "\n"; |
| |
} |
| |
|
| |
# Check for any unread discussions in all resources. |
| |
if ($args->{'caller'} eq 'navmapsdisplay') { |
| |
&add_linkitem($args->{'linkitems'},'clearbubbles', |
| |
'document.clearbubbles.submit()', |
| |
'Mark all posts read'); |
| |
my $time=time; |
| |
$result .= (<<END); |
| |
<form name="clearbubbles" method="post" action="/adm/feedback"> |
| |
<input type="hidden" name="navurl" value="$ENV{'QUERY_STRING'}" /> |
| |
<input type="hidden" name="navtime" value="$time" /> |
| |
END |
| |
if ($env{'form.register'}) { |
| |
$result .= '<input type="hidden" name="register" value="'.$env{'form.register'}.'" />'; |
| |
} |
| |
if ($args->{'sort'} eq 'discussion') { |
| |
my $totdisc = 0; |
| |
my $haveDisc = ''; |
| |
my @allres=$navmap->retrieveResources(); |
| |
foreach my $resource (@allres) { |
| |
if ($resource->hasDiscussion()) { |
| |
$haveDisc .= $resource->wrap_symb().':'; |
| |
$totdisc ++; |
| |
} |
| |
} |
| |
if ($totdisc > 0) { |
| |
$haveDisc =~ s/:$//; |
| |
$result .= (<<END); |
| |
<input type="hidden" name="navmaps" value="$haveDisc" /> |
| |
</form> |
| |
END |
| |
} |
| |
} |
| |
$result.='</form>'; |
| |
} |
| |
|
| |
if ($args->{'caller'} eq 'navmapsdisplay') { |
| |
$result .= '<table><tr><td>'. |
| |
&Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT').'</td><td> </td>'. |
| |
'<td class="LC_middle">'.&mt('Tools:').'</td>'. |
| |
&show_linkitems_toolbar($args->{'linkitems'}); |
| |
if ($args->{'sort_html'}) { |
| |
if ($env{'environment.remotenavmap'} ne 'on') { |
| |
$result .= '<td> </td><td> </td><td> </td>'. |
| |
'<td align="right">'.$args->{'sort_html'}.'</td></tr>'; |
| |
} else { |
| |
$result .= '</tr><tr><td align="left" colspan="4"><br />'. |
| |
$args->{'sort_html'}.'</td></tr>'; |
| |
} |
| |
} else { |
| |
$result .= '</tr>'; |
| |
} |
| |
$result .= '</table>'; |
| |
} elsif ($args->{'sort_html'}) { |
| |
$result.=$args->{'sort_html'}; |
| |
} |
| |
|
| |
#$result .= "<br />\n"; |
| |
if ($r) { |
| |
$r->print($result); |
| |
$r->rflush(); |
| |
$result = ""; |
| |
} |
| |
# End parameter setting |
| |
|
| |
$result .= "<br />\n"; |
| |
|
| |
# Data |
| |
$result.=&Apache::loncommon::start_data_table("LC_tableOfContent"); |
| |
|
| |
my $res = "Apache::lonnavmaps::resource"; |
| |
my %condenseStatuses = |
| |
( $res->NETWORK_FAILURE => 1, |
| |
$res->NOTHING_SET => 1, |
| |
$res->CORRECT => 1 ); |
| |
|
| |
# Shared variables |
| |
$args->{'counter'} = 0; # counts the rows |
| |
$args->{'indentLevel'} = 0; |
| |
$args->{'isNewBranch'} = 0; |
| |
$args->{'condensed'} = 0; |
| |
|
| |
my $location = &Apache::loncommon::lonhttpdurl("/adm/lonIcons/whitespace_21.gif"); |
| |
$args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='$location' alt='' />"); |
| |
$args->{'displayedHereMarker'} = 0; |
| |
|
| |
# If we're suppressing empty sequences, look for them here. Use DFS for speed, |
| |
# since structure actually doesn't matter, except what map has what resources. |
| |
if ($args->{'suppressEmptySequences'}) { |
| |
my $dfsit = Apache::lonnavmaps::DFSiterator->new($navmap, |
| |
$it->{FIRST_RESOURCE}, |
| |
$it->{FINISH_RESOURCE}, |
| |
{}, undef, 1); |
| |
my $depth = 0; |
| |
$dfsit->next(); |
| |
my $curRes = $dfsit->next(); |
| |
while ($depth > -1) { |
| |
if ($curRes == $dfsit->BEGIN_MAP()) { $depth++; } |
| |
if ($curRes == $dfsit->END_MAP()) { $depth--; } |
| |
|
| |
if (ref($curRes)) { |
| |
# Parallel pre-processing: Do sequences have non-filtered-out children? |
| |
if ($curRes->is_map()) { |
| |
$curRes->{DATA}->{HAS_VISIBLE_CHILDREN} = 0; |
| |
# Sequences themselves do not count as visible children, |
| |
# unless those sequences also have visible children. |
| |
# This means if a sequence appears, there's a "promise" |
| |
# that there's something under it if you open it, somewhere. |
| |
} else { |
| |
# Not a sequence: if it's filtered, ignore it, otherwise |
| |
# rise up the stack and mark the sequences as having children |
| |
if (&$filterFunc($curRes)) { |
| |
for my $sequence (@{$dfsit->getStack()}) { |
| |
$sequence->{DATA}->{HAS_VISIBLE_CHILDREN} = 1; |
| |
} |
| |
} |
| |
} |
| |
} |
| |
} continue { |
| |
$curRes = $dfsit->next(); |
| |
} |
| |
} |
| |
|
| |
my $displayedJumpMarker = 0; |
| |
# Set up iteration. |
| |
my $now = time(); |
| |
my $in24Hours = $now + 24 * 60 * 60; |
| |
my $rownum = 0; |
| |
|
| |
# export "here" marker information |
| |
$args->{'here'} = $here; |
| |
|
| |
$args->{'indentLevel'} = -1; # first BEGIN_MAP takes this to 0 |
| |
my @resources; |
| |
my $code='';# sub { !(shift->is_map();) }; |
| |
if ($args->{'sort'} eq 'title') { |
| |
my $oldFilterFunc = $filterFunc; |
| |
my $filterFunc= |
| |
sub { |
| |
my ($res)=@_; |
| |
if ($res->is_map()) { return 0;} |
| |
return &$oldFilterFunc($res); |
| |
}; |
| |
@resources=$navmap->retrieveResources(undef,$filterFunc); |
| |
@resources= sort { &cmp_title($a,$b) } @resources; |
| |
} elsif ($args->{'sort'} eq 'duedate') { |
| |
my $oldFilterFunc = $filterFunc; |
| |
my $filterFunc= |
| |
sub { |
| |
my ($res)=@_; |
| |
if (!$res->is_problem()) { return 0;} |
| |
return &$oldFilterFunc($res); |
| |
}; |
| |
@resources=$navmap->retrieveResources(undef,$filterFunc); |
| |
@resources= sort { |
| |
if ($a->duedate ne $b->duedate) { |
| |
return $a->duedate cmp $b->duedate; |
| |
} |
| |
my $value=&cmp_title($a,$b); |
| |
return $value; |
| |
} @resources; |
| |
} elsif ($args->{'sort'} eq 'discussion') { |
| |
my $oldFilterFunc = $filterFunc; |
| |
my $filterFunc= |
| |
sub { |
| |
my ($res)=@_; |
| |
if (!$res->hasDiscussion() && |
| |
!$res->getFeedback() && |
| |
!$res->getErrors()) { return 0;} |
| |
return &$oldFilterFunc($res); |
| |
}; |
| |
@resources=$navmap->retrieveResources(undef,$filterFunc); |
| |
@resources= sort { &cmp_title($a,$b) } @resources; |
| |
} else { |
| |
#unknow sort mechanism or default |
| |
undef($args->{'sort'}); |
| |
} |
| |
|
| |
|
| |
while (1) { |
| |
if ($args->{'sort'}) { |
| |
$curRes = shift(@resources); |
| |
} else { |
| |
$curRes = $it->next($closeAllPages); |
| |
} |
| |
if (!$curRes) { last; } |
| |
|
| |
# Maintain indentation level. |
| |
if ($curRes == $it->BEGIN_MAP() || |
| |
$curRes == $it->BEGIN_BRANCH() ) { |
| |
$args->{'indentLevel'}++; |
| |
} |
| |
if ($curRes == $it->END_MAP() || |
| |
$curRes == $it->END_BRANCH() ) { |
| |
$args->{'indentLevel'}--; |
| |
} |
| |
# Notice new branches |
| |
if ($curRes == $it->BEGIN_BRANCH()) { |
| |
$args->{'isNewBranch'} = 1; |
| |
} |
| |
|
| |
# If this isn't an actual resource, continue on |
| |
if (!ref($curRes)) { |
| |
next; |
| |
} |
| |
|
| |
# If this has been filtered out, continue on |
| |
if (!(&$filterFunc($curRes))) { |
| |
$args->{'isNewBranch'} = 0; # Don't falsely remember this |
| |
next; |
| |
} |
| |
|
| |
# If this is an empty sequence and we're filtering them, continue on |
| |
if ($curRes->is_map() && $args->{'suppressEmptySequences'} && |
| |
!$curRes->{DATA}->{HAS_VISIBLE_CHILDREN}) { |
| |
next; |
| |
} |
| |
|
| |
# If we're suppressing navmaps and this is a navmap, continue on |
| |
if ($suppressNavmap && $curRes->src() =~ /^\/adm\/navmaps/) { |
| |
next; |
| |
} |
| |
|
| |
$args->{'counter'}++; |
| |
|
| |
# Does it have multiple parts? |
| |
$args->{'multipart'} = 0; |
| |
$args->{'condensed'} = 0; |
| |
my @parts; |
| |
|
| |
# Decide what parts to show. |
| |
if ($curRes->is_problem() && $showParts) { |
| |
@parts = @{$curRes->parts()}; |
| |
$args->{'multipart'} = $curRes->multipart(); |
| |
|
| |
if ($condenseParts) { # do the condensation |
| |
if (!$args->{'condensed'}) { |
| |
# Decide whether to condense based on similarity |
| |
my $status = $curRes->status($parts[0]); |
| |
my $due = $curRes->duedate($parts[0]); |
| |
my $open = $curRes->opendate($parts[0]); |
| |
my $statusAllSame = 1; |
| |
my $dueAllSame = 1; |
| |
my $openAllSame = 1; |
| |
for (my $i = 1; $i < scalar(@parts); $i++) { |
| |
if ($curRes->status($parts[$i]) != $status){ |
| |
$statusAllSame = 0; |
| |
} |
| |
if ($curRes->duedate($parts[$i]) != $due ) { |
| |
$dueAllSame = 0; |
| |
} |
| |
if ($curRes->opendate($parts[$i]) != $open) { |
| |
$openAllSame = 0; |
| |
} |
| |
} |
| |
# $*allSame is true if all the statuses were |
| |
# the same. Now, if they are all the same and |
| |
# match one of the statuses to condense, or they |
| |
# are all open with the same due date, or they are |
| |
# all OPEN_LATER with the same open date, display the |
| |
# status of the first non-zero part (to get the 'correct' |
| |
# status right, since 0 is never 'correct' or 'open'). |
| |
if (($statusAllSame && defined($condenseStatuses{$status})) || |
| |
($dueAllSame && $status == $curRes->OPEN && $statusAllSame)|| |
| |
($openAllSame && $status == $curRes->OPEN_LATER && $statusAllSame) ){ |
| |
@parts = ($parts[0]); |
| |
$args->{'condensed'} = 1; |
| |
} |
| |
} |
| |
# Multipart problem with one part: always "condense" (happens |
| |
# to match the desirable behavior) |
| |
if ($curRes->countParts() == 1) { |
| |
@parts = ($parts[0]); |
| |
$args->{'condensed'} = 1; |
| |
} |
| |
} |
| |
} |
| |
|
| |
# If the multipart problem was condensed, "forget" it was multipart |
| |
if (scalar(@parts) == 1) { |
| |
$args->{'multipart'} = 0; |
| |
} else { |
| |
# Add part 0 so we display it correctly. |
| |
unshift @parts, '0'; |
| |
} |
| |
|
| |
{ |
| |
my ($src,$symb,$anchor,$stack); |
| |
if ($args->{'sort'}) { |
| |
my $it = $navmap->getIterator(undef, undef, undef, 1); |
| |
while ( my $res=$it->next()) { |
| |
if (ref($res) && |
| |
$res->symb() eq $curRes->symb()) { last; } |
| |
} |
| |
$stack=$it->getStack(); |
| |
} else { |
| |
$stack=$it->getStack(); |
| |
} |
| |
($src,$symb,$anchor)=getLinkForResource($stack); |
| |
if (defined($anchor)) { $anchor='#'.$anchor; } |
| |
my $srcHasQuestion = $src =~ /\?/; |
| |
$args->{"resourceLink"} = $src. |
| |
($srcHasQuestion?'&':'?') . |
| |
'symb=' . &escape($symb).$anchor; |
| |
} |
| |
# Now, we've decided what parts to show. Loop through them and |
| |
# show them. |
| |
foreach my $part (@parts) { |
| |
$rownum ++; |
| |
|
| |
$result .= &Apache::loncommon::start_data_table_row(); |
| |
|
| |
# Set up some data about the parts that the cols might want |
| |
my $filter = $it->{FILTER}; |
| |
|
| |
# Now, display each column. |
| |
foreach my $col (@$cols) { |
| |
my $colHTML = ''; |
| |
if (ref($col)) { |
| |
$colHTML .= &$col($curRes, $part, $args); |
| |
} else { |
| |
$colHTML .= &{$preparedColumns[$col]}($curRes, $part, $args); |
| |
} |
| |
|
| |
# If this is the first column and it's time to print |
| |
# the anchor, do so |
| |
if ($col == $cols->[0] && |
| |
$args->{'counter'} == $args->{'currentJumpIndex'} - |
| |
$currentJumpDelta) { |
| |
# Jam the anchor after the <td> tag; |
| |
# necessary for valid HTML (which Mozilla requires) |
| |
$colHTML =~ s/\>/\>\<a name="curloc" \/\>/; |
| |
$displayedJumpMarker = 1; |
| |
} |
| |
$result .= $colHTML . "\n"; |
| |
} |
| |
$result .= &Apache::loncommon::end_data_table_row(); |
| |
$args->{'isNewBranch'} = 0; |
| |
} |
| |
|
| |
if ($r && $rownum % 20 == 0) { |
| |
$r->print($result); |
| |
$result = ""; |
| |
$r->rflush(); |
| |
} |
| |
} continue { |
| |
if ($r) { |
| |
# If we have the connection, make sure the user is still connected |
| |
my $c = $r->connection; |
| |
if ($c->aborted()) { |
| |
# Who cares what we do, nobody will see it anyhow. |
| |
return ''; |
| |
} |
| |
} |
| |
} |
| |
|
| |
# Print out the part that jumps to #curloc if it exists |
| |
# delay needed because the browser is processing the jump before |
| |
# it finishes rendering, so it goes to the wrong place! |
| |
# onload might be better, but this routine has no access to that. |
| |
# On mozilla, the 0-millisecond timeout seems to prevent this; |
| |
# it's quite likely this might fix other browsers, too, and |
| |
# certainly won't hurt anything. |
| |
if ($displayedJumpMarker) { |
| |
$result .= &Apache::lonhtmlcommon::scripttag(" |
| |
if (location.href.indexOf('#curloc')==-1) { |
| |
setTimeout(\"location += '#curloc';\", 0) |
| |
} |
| |
"); |
| |
} |
| |
|
| |
$result.=&Apache::loncommon::end_data_table(); |
| |
|
| |
if ($r) { |
| |
$r->print($result); |
| |
$result = ""; |
| |
$r->rflush(); |
| |
} |
| |
|
| |
return $result; |
| |
} |
| |
|
| |
sub add_linkitem { |
| |
my ($linkitems,$name,$cmd,$text)=@_; |
| |
$$linkitems{$name}{'cmd'}=$cmd; |
| |
$$linkitems{$name}{'text'}=&mt($text); |
| |
} |
| |
|
| |
sub show_linkitems_toolbar { |
| |
my ($linkitems,$condition)=@_; |
| |
my @linkorder = ("launchnav","closenav","firsthomework", |
| |
"everything","uncompleted","changefolder","clearbubbles"); |
| |
my $result .='<td align="left">'."\n". |
| |
'<span class="LC_nobreak">'."\n". |
| |
'<ul id="LC_toolbar">'; |
| |
foreach my $link (@linkorder) { |
| |
my $link_id = 'LC_content_toolbar_'.$link; |
| |
if (defined($linkitems->{$link})) { |
| |
if ($linkitems->{$link}{'text'} ne '') { |
| |
$linkitems->{$link}{'cmd'}=~s/"/'/g; |
| |
if ($linkitems->{$link}{'cmd'}) { |
| |
if ($link eq 'changefolder') { |
| |
if ($condition) { |
| |
$link_id='LC_content_toolbar_changefolder_toggled'; |
| |
} else { |
| |
$link_id='LC_content_toolbar_changefolder'; |
| |
} |
| |
} |
| |
$result .= '<li><a href="#" '. |
| |
'onclick="'.$linkitems->{$link}{'cmd'}.'" '. |
| |
'id="'.$link_id.'" '. |
| |
'class="LC_toolbarItem" '. |
| |
'title="'.$linkitems->{$link}{'text'}.'">'. |
| |
'</a></li>'."\n"; |
| |
} |
| |
} |
| |
} |
| |
} |
| |
$result .= '</ul>'. |
| |
'</span></td>'."\n"; |
| |
return $result; |
| |
} |
| |
|
| |
|
| |
1; |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
package Apache::lonnavmaps::navmap; |
| |
|
| |
=pod |
| |
|
| |
=head1 Object: Apache::lonnavmaps::navmap |
| |
|
| |
=head2 Overview |
| |
|
| |
The navmap object's job is to provide access to the resources |
| |
in the course as Apache::lonnavmaps::resource objects, and to |
| |
query and manage the relationship between those resource objects. |
| |
|
| |
Generally, you'll use the navmap object in one of three basic ways. |
| |
In order of increasing complexity and power: |
| |
|
| |
=over 4 |
| |
|
| |
=item * C<$navmap-E<gt>getByX>, where X is B<Id>, B<Symb> or B<MapPc> and getResourceByUrl. This provides |
| |
various ways to obtain resource objects, based on various identifiers. |
| |
Use this when you want to request information about one object or |
| |
a handful of resources you already know the identities of, from some |
| |
other source. For more about Ids, Symbs, and MapPcs, see the |
| |
Resource documentation. Note that Url should be a B<last resort>, |
| |
not your first choice; it only really works when there is only one |
| |
instance of the resource in the course, which only applies to |
| |
maps, and even that may change in the future (see the B<getResourceByUrl> |
| |
documentation for more details.) |
| |
|
| |
=item * C<my @resources = $navmap-E<gt>retrieveResources(args)>. This |
| |
retrieves resources matching some criterion and returns them |
| |
in a flat array, with no structure information. Use this when |
| |
you are manipulating a series of resources, based on what map |
| |
the are in, but do not care about branching, or exactly how |
| |
the maps and resources are related. This is the most common case. |
| |
|
| |
=item * C<$it = $navmap-E<gt>getIterator(args)>. This allows you traverse |
| |
the course's navmap in various ways without writing the traversal |
| |
code yourself. See iterator documentation below. Use this when |
| |
you need to know absolutely everything about the course, including |
| |
branches and the precise relationship between maps and resources. |
| |
|
| |
=back |
| |
|
| |
=head2 Creation And Destruction |
| |
|
| |
To create a navmap object, use the following function: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<Apache::lonnavmaps::navmap-E<gt>new>(): |
| |
|
| |
Creates a new navmap object. Returns the navmap object if this is |
| |
successful, or B<undef> if not. |
| |
|
| |
=back |
| |
|
| |
=head2 Methods |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getIterator>(first, finish, filter, condition): |
| |
|
| |
See iterator documentation below. |
| |
|
| |
=cut |
| |
|
| |
use strict; |
| use GDBM_File; |
use GDBM_File; |
| |
use Apache::lonnet; |
| |
use LONCAPA; |
| |
|
| # -------------------------------------------------------------- Module Globals |
sub new { |
| my %hash; |
# magic invocation to create a class instance |
| my @rows; |
my $proto = shift; |
| |
my $class = ref($proto) || $proto; |
| |
my $self = {}; |
| |
|
| |
# Resource cache stores navmap resources as we reference them. We generate |
| |
# them on-demand so we don't pay for creating resources unless we use them. |
| |
$self->{RESOURCE_CACHE} = {}; |
| |
|
| |
# Network failure flag, if we accessed the course or user opt and |
| |
# failed |
| |
$self->{NETWORK_FAILURE} = 0; |
| |
|
| |
# tie the nav hash |
| |
|
| |
my %navmaphash; |
| |
my %parmhash; |
| |
my $courseFn = $env{"request.course.fn"}; |
| |
if (!(tie(%navmaphash, 'GDBM_File', "${courseFn}.db", |
| |
&GDBM_READER(), 0640))) { |
| |
return undef; |
| |
} |
| |
|
| |
if (!(tie(%parmhash, 'GDBM_File', "${courseFn}_parms.db", |
| |
&GDBM_READER(), 0640))) |
| |
{ |
| |
untie %{$self->{PARM_HASH}}; |
| |
return undef; |
| |
} |
| |
|
| # |
$self->{NAV_HASH} = \%navmaphash; |
| # These cache hashes need to be independent of user, resource and course |
$self->{PARM_HASH} = \%parmhash; |
| # (user and course can/should be in the keys) |
$self->{PARM_CACHE} = {}; |
| # |
|
| |
bless($self); |
| |
|
| |
return $self; |
| |
} |
| |
|
| my %courserdatas; |
sub generate_course_user_opt { |
| my %userrdatas; |
my $self = shift; |
| |
if ($self->{COURSE_USER_OPT_GENERATED}) { return; } |
| |
|
| |
my $uname=$env{'user.name'}; |
| |
my $udom=$env{'user.domain'}; |
| |
my $cid=$env{'request.course.id'}; |
| |
my $cdom=$env{'course.'.$cid.'.domain'}; |
| |
my $cnum=$env{'course.'.$cid.'.num'}; |
| |
|
| |
# ------------------------------------------------- Get coursedata (if present) |
| |
my $courseopt=&Apache::lonnet::get_courseresdata($cnum,$cdom); |
| |
# Check for network failure |
| |
if (!ref($courseopt)) { |
| |
if ( $courseopt =~ /no.such.host/i || $courseopt =~ /con_lost/i) { |
| |
$self->{NETWORK_FAILURE} = 1; |
| |
} |
| |
undef($courseopt); |
| |
} |
| |
|
| # |
# --------------------------------------------------- Get userdata (if present) |
| # These global hashes are dependent on user, course and resource, |
|
| # and need to be initialized every time when a sheet is calculated |
my $useropt=&Apache::lonnet::get_userresdata($uname,$udom); |
| # |
# Check for network failure |
| my %courseopt; |
if (!ref($useropt)) { |
| my %useropt; |
if ( $useropt =~ /no.such.host/i || $useropt =~ /con_lost/i) { |
| my %parmhash; |
$self->{NETWORK_FAILURE} = 1; |
| |
} |
| |
undef($useropt); |
| |
} |
| |
|
| |
$self->{COURSE_OPT} = $courseopt; |
| |
$self->{USER_OPT} = $useropt; |
| |
|
| # ------------------------------------------------------------------ Euclid gcd |
$self->{COURSE_USER_OPT_GENERATED} = 1; |
| |
|
| |
return; |
| |
} |
| |
|
| |
sub generate_email_discuss_status { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
if ($self->{EMAIL_DISCUSS_GENERATED}) { return; } |
| |
|
| |
my $cid=$env{'request.course.id'}; |
| |
my $cdom=$env{'course.'.$cid.'.domain'}; |
| |
my $cnum=$env{'course.'.$cid.'.num'}; |
| |
|
| |
my %emailstatus = &Apache::lonnet::dump('email_status'); |
| |
my $logoutTime = $emailstatus{'logout'}; |
| |
my $courseLeaveTime = $emailstatus{'logout_'.$env{'request.course.id'}}; |
| |
$self->{LAST_CHECK} = (($courseLeaveTime > $logoutTime) ? |
| |
$courseLeaveTime : $logoutTime); |
| |
my %discussiontime = &Apache::lonnet::dump('discussiontimes', |
| |
$cdom, $cnum); |
| |
my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss', |
| |
$env{'user.domain'},$env{'user.name'},'lastread'); |
| |
my %lastreadtime = (); |
| |
foreach my $key (keys %lastread) { |
| |
my $shortkey = $key; |
| |
$shortkey =~ s/_lastread$//; |
| |
$lastreadtime{$shortkey} = $lastread{$key}; |
| |
} |
| |
|
| sub euclid { |
my %feedback=(); |
| my ($e,$f)=@_; |
my %error=(); |
| my $a; my $b; my $r; |
my @keys = &Apache::lonnet::getkeys('nohist_email',$env{'user.domain'}, |
| if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; } |
$env{'user.name'}); |
| while ($r!=0) { |
|
| $a=$b; $b=$r; |
foreach my $msgid (@keys) { |
| $r=$a%$b; |
if ((!$emailstatus{$msgid}) || ($emailstatus{$msgid} eq 'new')) { |
| |
my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$fromcid, |
| |
$symb,$error) = &Apache::lonmsg::unpackmsgid($msgid); |
| |
&Apache::lonenc::check_decrypt(\$symb); |
| |
if (($fromcid ne '') && ($fromcid ne $cid)) { |
| |
next; |
| |
} |
| |
if (defined($symb)) { |
| |
if (defined($error) && $error == 1) { |
| |
$error{$symb}.=','.$msgid; |
| |
} else { |
| |
$feedback{$symb}.=','.$msgid; |
| |
} |
| |
} else { |
| |
my $plain= |
| |
&LONCAPA::unescape(&LONCAPA::unescape($msgid)); |
| |
if ($plain=~/ \[([^\]]+)\]\:/) { |
| |
my $url=$1; |
| |
if ($plain=~/\:Error \[/) { |
| |
$error{$url}.=','.$msgid; |
| |
} else { |
| |
$feedback{$url}.=','.$msgid; |
| |
} |
| |
} |
| |
} |
| |
} |
| } |
} |
| return $b; |
|
| |
#symbs of resources that have feedbacks (will be urls pre-2.3) |
| |
$self->{FEEDBACK} = \%feedback; |
| |
#or errors (will be urls pre 2.3) |
| |
$self->{ERROR_MSG} = \%error; |
| |
$self->{DISCUSSION_TIME} = \%discussiontime; |
| |
$self->{EMAIL_STATUS} = \%emailstatus; |
| |
$self->{LAST_READ} = \%lastreadtime; |
| |
|
| |
$self->{EMAIL_DISCUSS_GENERATED} = 1; |
| } |
} |
| |
|
| # --------------------------------------------------------------------- Parmval |
sub get_user_data { |
| |
my $self = shift; |
| |
if ($self->{RETRIEVED_USER_DATA}) { return; } |
| |
|
| |
# Retrieve performance data on problems |
| |
my %student_data = Apache::lonnet::currentdump($env{'request.course.id'}, |
| |
$env{'user.domain'}, |
| |
$env{'user.name'}); |
| |
$self->{STUDENT_DATA} = \%student_data; |
| |
|
| # -------------------------------------------- Figure out a cascading parameter |
$self->{RETRIEVED_USER_DATA} = 1; |
| # |
} |
| # For this function to work |
|
| # |
sub get_discussion_data { |
| # * parmhash needs to be tied |
my $self = shift; |
| # * courseopt and useropt need to be initialized for this user and course |
if ($self->{RETRIEVED_DISCUSSION_DATA}) { |
| # |
return $self->{DISCUSSION_DATA}; |
| |
} |
| |
|
| |
$self->generate_email_discuss_status(); |
| |
|
| |
my $cid=$env{'request.course.id'}; |
| |
my $cdom=$env{'course.'.$cid.'.domain'}; |
| |
my $cnum=$env{'course.'.$cid.'.num'}; |
| |
# Retrieve discussion data for resources in course |
| |
my %discussion_data = &Apache::lonnet::dumpstore($cid,$cdom,$cnum); |
| |
|
| |
|
| |
$self->{DISCUSSION_DATA} = \%discussion_data; |
| |
$self->{RETRIEVED_DISCUSSION_DATA} = 1; |
| |
return $self->{DISCUSSION_DATA}; |
| |
} |
| |
|
| |
|
| |
# Internal function: Takes a key to look up in the nav hash and implements internal |
| |
# memory caching of that key. |
| |
sub navhash { |
| |
my $self = shift; my $key = shift; |
| |
return $self->{NAV_HASH}->{$key}; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<courseMapDefined>(): Returns true if the course map is defined, |
| |
false otherwise. Undefined course maps indicate an error somewhere in |
| |
LON-CAPA, and you will not be able to proceed with using the navmap. |
| |
See the B<NAV> screen for an example of using this. |
| |
|
| |
=cut |
| |
|
| |
# Checks to see if coursemap is defined, matching test in old lonnavmaps |
| |
sub courseMapDefined { |
| |
my $self = shift; |
| |
my $uri = &Apache::lonnet::clutter($env{'request.course.uri'}); |
| |
|
| |
my $firstres = $self->navhash("map_start_$uri"); |
| |
my $lastres = $self->navhash("map_finish_$uri"); |
| |
return $firstres && $lastres; |
| |
} |
| |
|
| |
sub getIterator { |
| |
my $self = shift; |
| |
my $iterator = Apache::lonnavmaps::iterator->new($self, shift, shift, |
| |
shift, undef, shift, |
| |
shift, shift); |
| |
return $iterator; |
| |
} |
| |
|
| |
# Private method: Does the given resource (as a symb string) have |
| |
# current discussion? Returns 0 if chat/mail data not extracted. |
| |
sub hasDiscussion { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
$self->generate_email_discuss_status(); |
| |
|
| |
if (!defined($self->{DISCUSSION_TIME})) { return 0; } |
| |
|
| |
#return defined($self->{DISCUSSION_TIME}->{$symb}); |
| |
|
| |
# backward compatibility (bulletin boards used to be 'wrapped') |
| |
my $ressymb = $self->wrap_symb($symb); |
| |
if ( defined ( $self->{LAST_READ}->{$ressymb} ) ) { |
| |
return $self->{DISCUSSION_TIME}->{$ressymb} > $self->{LAST_READ}->{$ressymb}; |
| |
} else { |
| |
# return $self->{DISCUSSION_TIME}->{$ressymb} > $self->{LAST_CHECK}; # v.1.1 behavior |
| |
return $self->{DISCUSSION_TIME}->{$ressymb} > 0; # in 1.2 will display speech bubble icons for all items with posts until marked as read (even if read in v 1.1). |
| |
} |
| |
} |
| |
|
| |
sub last_post_time { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
my $ressymb = $self->wrap_symb($symb); |
| |
return $self->{DISCUSSION_TIME}->{$ressymb}; |
| |
} |
| |
|
| |
sub discussion_info { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
my $filter = shift; |
| |
|
| |
$self->get_discussion_data(); |
| |
|
| |
my $ressymb = $self->wrap_symb($symb); |
| |
# keys used to store bulletinboard postings use 'unwrapped' symb. |
| |
my $discsymb = &escape($self->unwrap_symb($ressymb)); |
| |
my $version = $self->{DISCUSSION_DATA}{'version:'.$discsymb}; |
| |
if (!$version) { return; } |
| |
|
| |
my $prevread = $self->{LAST_READ}{$ressymb}; |
| |
|
| |
my $count = 0; |
| |
my $hiddenflag = 0; |
| |
my $deletedflag = 0; |
| |
my ($hidden,$deleted,%info); |
| |
|
| |
for (my $id=$version; $id>0; $id--) { |
| |
my $vkeys=$self->{DISCUSSION_DATA}{$id.':keys:'.$discsymb}; |
| |
my @keys=split(/:/,$vkeys); |
| |
if (grep(/^hidden$/ ,@keys)) { |
| |
if (!$hiddenflag) { |
| |
$hidden = $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':hidden'}; |
| |
$hiddenflag = 1; |
| |
} |
| |
} elsif (grep(/^deleted$/,@keys)) { |
| |
if (!$deletedflag) { |
| |
$deleted = $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':deleted'}; |
| |
$deletedflag = 1; |
| |
} |
| |
} else { |
| |
if (($hidden !~/\.$id\./) && ($deleted !~/\.$id\./)) { |
| |
if ($filter eq 'unread') { |
| |
if ($prevread >= $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':timestamp'}) { |
| |
next; |
| |
} |
| |
} |
| |
$count++; |
| |
$info{$count}{'subject'} = |
| |
$self->{DISCUSSION_DATA}{$id.':'.$discsymb.':subject'}; |
| |
$info{$count}{'id'} = $id; |
| |
$info{$count}{'timestamp'} = $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':timestamp'}; |
| |
} |
| |
} |
| |
} |
| |
if (wantarray) { |
| |
return ($count,%info); |
| |
} |
| |
return $count; |
| |
} |
| |
|
| |
sub wrap_symb { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
if ($symb =~ m-___(adm/[^/]+/[^/]+/)(\d+)(/bulletinboard)$-) { |
| |
unless ($symb =~ m|adm/wrapper/adm|) { |
| |
$symb = 'bulletin___'.$2.'___adm/wrapper/'.$1.$2.$3; |
| |
} |
| |
} |
| |
return $symb; |
| |
} |
| |
|
| |
sub unwrap_symb { |
| |
my $self = shift; |
| |
my $ressymb = shift; |
| |
my $discsymb = $ressymb; |
| |
if ($ressymb =~ m-^(bulletin___\d+___)adm/wrapper/(adm/[^/]+/[^/]+/\d+/bulletinboard)$-) { |
| |
$discsymb = $1.$2; |
| |
} |
| |
return $discsymb; |
| |
} |
| |
|
| |
# Private method: Does the given resource (as a symb string) have |
| |
# current feedback? Returns the string in the feedback hash, which |
| |
# will be false if it does not exist. |
| |
|
| |
sub getFeedback { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
my $source = shift; |
| |
|
| |
$self->generate_email_discuss_status(); |
| |
|
| |
if (!defined($self->{FEEDBACK})) { return ""; } |
| |
|
| |
my $feedback; |
| |
if ($self->{FEEDBACK}->{$symb}) { |
| |
$feedback = $self->{FEEDBACK}->{$symb}; |
| |
if ($self->{FEEDBACK}->{$source}) { |
| |
$feedback .= ','.$self->{FEEDBACK}->{$source}; |
| |
} |
| |
} else { |
| |
if ($self->{FEEDBACK}->{$source}) { |
| |
$feedback = $self->{FEEDBACK}->{$source}; |
| |
} |
| |
} |
| |
return $feedback; |
| |
} |
| |
|
| |
# Private method: Get the errors for that resource (by source). |
| |
sub getErrors { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
my $src = shift; |
| |
|
| |
$self->generate_email_discuss_status(); |
| |
|
| |
if (!defined($self->{ERROR_MSG})) { return ""; } |
| |
|
| |
my $errors; |
| |
if ($self->{ERROR_MSG}->{$symb}) { |
| |
$errors = $self->{ERROR_MSG}->{$symb}; |
| |
if ($self->{ERROR_MSG}->{$src}) { |
| |
$errors .= ','.$self->{ERROR_MSG}->{$src}; |
| |
} |
| |
} else { |
| |
if ($self->{ERROR_MSG}->{$src}) { |
| |
$errors = $self->{ERROR_MSG}->{$src}; |
| |
} |
| |
} |
| |
return $errors; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<getById>(id): |
| |
|
| |
Based on the ID of the resource (1.1, 3.2, etc.), get a resource |
| |
object for that resource. This method, or other methods that use it |
| |
(as in the resource object) is the only proper way to obtain a |
| |
resource object. |
| |
|
| |
=item * B<getBySymb>(symb): |
| |
|
| |
Based on the symb of the resource, get a resource object for that |
| |
resource. This is one of the proper ways to get a resource object. |
| |
|
| |
=item * B<getByMapPc>(map_pc): |
| |
|
| |
Based on the map_pc of the resource, get a resource object for |
| |
the given map. This is one of the proper ways to get a resource object. |
| |
|
| |
=cut |
| |
|
| |
# The strategy here is to cache the resource objects, and only construct them |
| |
# as we use them. The real point is to prevent reading any more from the tied |
| |
# hash than we have to, which should hopefully alleviate speed problems. |
| |
|
| |
sub getById { |
| |
my $self = shift; |
| |
my $id = shift; |
| |
|
| |
if (defined ($self->{RESOURCE_CACHE}->{$id})) |
| |
{ |
| |
return $self->{RESOURCE_CACHE}->{$id}; |
| |
} |
| |
|
| |
# resource handles inserting itself into cache. |
| |
# Not clear why the quotes are necessary, but as of this |
| |
# writing it doesn't work without them. |
| |
return "Apache::lonnavmaps::resource"->new($self, $id); |
| |
} |
| |
|
| |
sub getBySymb { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
|
| |
my ($mapUrl, $id, $filename) = &Apache::lonnet::decode_symb($symb); |
| |
my $map = $self->getResourceByUrl($mapUrl); |
| |
my $returnvalue = undef; |
| |
if (ref($map)) { |
| |
$returnvalue = $self->getById($map->map_pc() .'.'.$id); |
| |
} |
| |
return $returnvalue; |
| |
} |
| |
|
| |
sub getByMapPc { |
| |
my $self = shift; |
| |
my $map_pc = shift; |
| |
my $map_id = $self->{NAV_HASH}->{'map_id_' . $map_pc}; |
| |
$map_id = $self->{NAV_HASH}->{'ids_' . $map_id}; |
| |
return $self->getById($map_id); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<firstResource>(): |
| |
|
| |
Returns a resource object reference corresponding to the first |
| |
resource in the navmap. |
| |
|
| |
=cut |
| |
|
| |
sub firstResource { |
| |
my $self = shift; |
| |
my $firstResource = $self->navhash('map_start_' . |
| |
&Apache::lonnet::clutter($env{'request.course.uri'})); |
| |
return $self->getById($firstResource); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<finishResource>(): |
| |
|
| |
Returns a resource object reference corresponding to the last resource |
| |
in the navmap. |
| |
|
| |
=cut |
| |
|
| |
sub finishResource { |
| |
my $self = shift; |
| |
my $firstResource = $self->navhash('map_finish_' . |
| |
&Apache::lonnet::clutter($env{'request.course.uri'})); |
| |
return $self->getById($firstResource); |
| |
} |
| |
|
| |
# Parmval reads the parm hash and cascades the lookups. parmval_real does |
| |
# the actual lookup; parmval caches the results. |
| sub parmval { |
sub parmval { |
| my ($what,$symb)=@_; |
my $self = shift; |
| my $cid=$ENV{'request.course.id'}; |
my ($what,$symb,$recurse)=@_; |
| my $csec=$ENV{'request.course.sec'}; |
my $hashkey = $what."|||".$symb; |
| my $uname=$ENV{'user.name'}; |
|
| my $udom=$ENV{'user.domain'}; |
if (defined($self->{PARM_CACHE}->{$hashkey})) { |
| |
if (ref($self->{PARM_CACHE}->{$hashkey}) eq 'ARRAY') { |
| |
if (defined($self->{PARM_CACHE}->{$hashkey}->[0])) { |
| |
if (wantarray) { |
| |
return @{$self->{PARM_CACHE}->{$hashkey}}; |
| |
} else { |
| |
return $self->{PARM_CACHE}->{$hashkey}->[0]; |
| |
} |
| |
} |
| |
} else { |
| |
return $self->{PARM_CACHE}->{$hashkey}; |
| |
} |
| |
} |
| |
my $result = $self->parmval_real($what, $symb, $recurse); |
| |
$self->{PARM_CACHE}->{$hashkey} = $result; |
| |
if (wantarray) { |
| |
return @{$result}; |
| |
} |
| |
return $result->[0]; |
| |
} |
| |
|
| unless ($symb) { return ''; } |
sub parmval_real { |
| my $result=''; |
my $self = shift; |
| |
my ($what,$symb,$recurse) = @_; |
| |
|
| |
# Make sure the {USER_OPT} and {COURSE_OPT} hashes are populated |
| |
$self->generate_course_user_opt(); |
| |
|
| |
my $cid=$env{'request.course.id'}; |
| |
my $csec=$env{'request.course.sec'}; |
| |
my $cgroup=''; |
| |
my @cgrps=split(/:/,$env{'request.course.groups'}); |
| |
if (@cgrps > 0) { |
| |
@cgrps = sort(@cgrps); |
| |
$cgroup = $cgrps[0]; |
| |
} |
| |
my $uname=$env{'user.name'}; |
| |
my $udom=$env{'user.domain'}; |
| |
|
| my ($mapname,$id,$fn)=split(/\_\_\_/,$symb); |
unless ($symb) { return ['']; } |
| |
my $result=''; |
| |
|
| |
my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb); |
| |
$mapname = &Apache::lonnet::deversion($mapname); |
| # ----------------------------------------------------- Cascading lookup scheme |
# ----------------------------------------------------- Cascading lookup scheme |
| my $rwhat=$what; |
my $rwhat=$what; |
| $what=~s/^parameter\_//; |
$what=~s/^parameter\_//; |
|
Line 109 sub parmval {
|
Line 2493 sub parmval {
|
| |
|
| my $symbparm=$symb.'.'.$what; |
my $symbparm=$symb.'.'.$what; |
| my $mapparm=$mapname.'___(all).'.$what; |
my $mapparm=$mapname.'___(all).'.$what; |
| my $usercourseprefix=$uname.'_'.$udom.'_'.$cid; |
my $usercourseprefix=$cid; |
| |
|
| |
my $grplevel=$usercourseprefix.'.['.$cgroup.'].'.$what; |
| |
my $grplevelr=$usercourseprefix.'.['.$cgroup.'].'.$symbparm; |
| |
my $grplevelm=$usercourseprefix.'.['.$cgroup.'].'.$mapparm; |
| |
|
| my $seclevel= $usercourseprefix.'.['.$csec.'].'.$what; |
my $seclevel= $usercourseprefix.'.['.$csec.'].'.$what; |
| my $seclevelr=$usercourseprefix.'.['.$csec.'].'.$symbparm; |
my $seclevelr=$usercourseprefix.'.['.$csec.'].'.$symbparm; |
|
Line 119 sub parmval {
|
Line 2507 sub parmval {
|
| my $courselevelr=$usercourseprefix.'.'.$symbparm; |
my $courselevelr=$usercourseprefix.'.'.$symbparm; |
| my $courselevelm=$usercourseprefix.'.'.$mapparm; |
my $courselevelm=$usercourseprefix.'.'.$mapparm; |
| |
|
| |
my $useropt = $self->{USER_OPT}; |
| |
my $courseopt = $self->{COURSE_OPT}; |
| |
my $parmhash = $self->{PARM_HASH}; |
| |
|
| # ---------------------------------------------------------- first, check user |
# ---------------------------------------------------------- first, check user |
| if ($uname) { |
if ($uname and defined($useropt)) { |
| if ($useropt{$courselevelr}) { return $useropt{$courselevelr}; } |
if (defined($$useropt{$courselevelr})) { return [$$useropt{$courselevelr},'resource']; } |
| if ($useropt{$courselevelm}) { return $useropt{$courselevelm}; } |
if (defined($$useropt{$courselevelm})) { return [$$useropt{$courselevelm},'map']; } |
| if ($useropt{$courselevel}) { return $useropt{$courselevel}; } |
if (defined($$useropt{$courselevel})) { return [$$useropt{$courselevel},'course']; } |
| } |
} |
| |
|
| # ------------------------------------------------------- second, check course |
# ------------------------------------------------------- second, check course |
| if ($csec) { |
if ($cgroup ne '' and defined($courseopt)) { |
| if ($courseopt{$seclevelr}) { return $courseopt{$seclevelr}; } |
if (defined($$courseopt{$grplevelr})) { return [$$courseopt{$grplevelr},'resource']; } |
| if ($courseopt{$seclevelm}) { return $courseopt{$seclevelm}; } |
if (defined($$courseopt{$grplevelm})) { return [$$courseopt{$grplevelm},'map']; } |
| if ($courseopt{$seclevel}) { return $courseopt{$seclevel}; } |
if (defined($$courseopt{$grplevel})) { return [$$courseopt{$grplevel},'course']; } |
| } |
} |
| |
|
| if ($courseopt{$courselevelr}) { return $courseopt{$courselevelr}; } |
if ($csec and defined($courseopt)) { |
| if ($courseopt{$courselevelm}) { return $courseopt{$courselevelm}; } |
if (defined($$courseopt{$seclevelr})) { return [$$courseopt{$seclevelr},'resource']; } |
| if ($courseopt{$courselevel}) { return $courseopt{$courselevel}; } |
if (defined($$courseopt{$seclevelm})) { return [$$courseopt{$seclevelm},'map']; } |
| |
if (defined($$courseopt{$seclevel})) { return [$$courseopt{$seclevel},'course']; } |
| |
} |
| |
|
| |
if (defined($courseopt)) { |
| |
if (defined($$courseopt{$courselevelr})) { return [$$courseopt{$courselevelr},'resource']; } |
| |
} |
| |
|
| # ----------------------------------------------------- third, check map parms |
# ----------------------------------------------------- third, check map parms |
| |
|
| my $thisparm=$parmhash{$symbparm}; |
my $thisparm=$$parmhash{$symbparm}; |
| if ($thisparm) { return $thisparm; } |
if (defined($thisparm)) { return [$thisparm,'map']; } |
| |
|
| # ----------------------------------------------------- fourth , check default |
# ----------------------------------------------------- fourth , check default |
| |
|
| my $default=&Apache::lonnet::metadata($fn,$rwhat.'.default'); |
my $meta_rwhat=$rwhat; |
| if ($default) { return $default} |
$meta_rwhat=~s/\./_/g; |
| |
my $default=&Apache::lonnet::metadata($fn,$meta_rwhat); |
| # --------------------------------------------------- fifth , cascade up parts |
if (defined($default)) { return [$default,'resource']} |
| |
$default=&Apache::lonnet::metadata($fn,'parameter_'.$meta_rwhat); |
| |
if (defined($default)) { return [$default,'resource']} |
| |
# --------------------------------------------------- fifth, check more course |
| |
if (defined($courseopt)) { |
| |
if (defined($$courseopt{$courselevelm})) { return [$$courseopt{$courselevelm},'map']; } |
| |
if (defined($$courseopt{$courselevel})) { |
| |
my $ret = [$$courseopt{$courselevel},'course']; |
| |
return $ret; |
| |
} |
| |
} |
| |
# --------------------------------------------------- sixth , cascade up parts |
| |
|
| my ($space,@qualifier)=split(/\./,$rwhat); |
my ($space,@qualifier)=split(/\./,$rwhat); |
| my $qualifier=join('.',@qualifier); |
my $qualifier=join('.',@qualifier); |
| unless ($space eq '0') { |
unless ($space eq '0') { |
| my ($part,$id)=split(/\_/,$space); |
my @parts=split(/_/,$space); |
| if ($id) { |
my $id=pop(@parts); |
| my $partgeneral=&parmval($part.".$qualifier",$symb); |
my $part=join('_',@parts); |
| if ($partgeneral) { return $partgeneral; } |
if ($part eq '') { $part='0'; } |
| } else { |
my @partgeneral=$self->parmval($part.".$qualifier",$symb,1); |
| my $resourcegeneral=&parmval("0.$qualifier",$symb); |
if (defined($partgeneral[0])) { return \@partgeneral; } |
| if ($resourcegeneral) { return $resourcegeneral; } |
|
| } |
|
| } |
} |
| return ''; |
if ($recurse) { return []; } |
| |
my $pack_def=&Apache::lonnet::packages_tab_default($fn,'resource.'.$rwhat); |
| |
if (defined($pack_def)) { return [$pack_def,'resource']; } |
| |
return ['']; |
| } |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<getResourceByUrl>(url,multiple): |
| |
|
| |
Retrieves a resource object by URL of the resource, unless the optional |
| |
multiple parameter is included in which case an array of resource |
| |
objects is returned. If passed a resource object, it will simply return |
| |
it, so it is safe to use this method in code like |
| |
"$res = $navmap->getResourceByUrl($res)" |
| |
if you're not sure if $res is already an object, or just a URL. If the |
| |
resource appears multiple times in the course, only the first instance |
| |
will be returned (useful for maps), unless the multiple parameter has |
| |
been included, in which case all instances are returned in an array. |
| |
|
| |
=item * B<retrieveResources>(map, filterFunc, recursive, bailout, showall): |
| |
|
| |
The map is a specification of a map to retreive the resources from, |
| |
either as a url or as an object. The filterFunc is a reference to a |
| |
function that takes a resource object as its one argument and returns |
| |
true if the resource should be included, or false if it should not |
| |
be. If recursive is true, the map will be recursively examined, |
| |
otherwise it will not be. If bailout is true, the function will return |
| |
as soon as it finds a resource, if false it will finish. If showall is |
| |
true it will not hide maps that contain nothing but one other map. By |
| |
default, the map is the top-level map of the course, filterFunc is a |
| |
function that always returns 1, recursive is true, bailout is false, |
| |
showall is false. The resources will be returned in a list containing |
| |
the resource objects for the corresponding resources, with B<no |
| |
structure information> in the list; regardless of branching, |
| |
recursion, etc., it will be a flat list. |
| |
|
| |
Thus, this is suitable for cases where you don't want the structure, |
| |
just a list of all resources. It is also suitable for finding out how |
| |
many resources match a given description; for this use, if all you |
| |
want to know is if I<any> resources match the description, the bailout |
| |
parameter will allow you to avoid potentially expensive enumeration of |
| |
all matching resources. |
| |
|
| |
=item * B<hasResource>(map, filterFunc, recursive, showall): |
| |
|
| |
Convenience method for |
| |
|
| |
scalar(retrieveResources($map, $filterFunc, $recursive, 1, $showall)) > 0 |
| |
|
| |
which will tell whether the map has resources matching the description |
| |
in the filter function. |
| |
|
| |
=item * B<usedVersion>(url): |
| |
|
| |
Retrieves version infomation for a url. Returns the version (a number, or |
| |
the string "mostrecent") for resources which have version information in |
| |
the big hash. |
| |
|
| |
=cut |
| |
|
| |
|
| |
sub getResourceByUrl { |
| |
my $self = shift; |
| |
my $resUrl = shift; |
| |
my $multiple = shift; |
| |
|
| |
if (ref($resUrl)) { return $resUrl; } |
| |
|
| |
$resUrl = &Apache::lonnet::clutter($resUrl); |
| |
my $resId = $self->{NAV_HASH}->{'ids_' . $resUrl}; |
| |
if (!$resId) { return ''; } |
| |
if ($multiple) { |
| |
my @resources = (); |
| |
my @resIds = split (/,/, $resId); |
| |
foreach my $id (@resIds) { |
| |
my $resourceId = $self->getById($id); |
| |
if ($resourceId) { |
| |
push(@resources,$resourceId); |
| |
} |
| |
} |
| |
return @resources; |
| |
} else { |
| |
if ($resId =~ /,/) { |
| |
$resId = (split (/,/, $resId))[0]; |
| |
} |
| |
return $self->getById($resId); |
| |
} |
| |
} |
| |
|
| |
sub retrieveResources { |
| |
my $self = shift; |
| |
my $map = shift; |
| |
my $filterFunc = shift; |
| |
if (!defined ($filterFunc)) { |
| |
$filterFunc = sub {return 1;}; |
| |
} |
| |
my $recursive = shift; |
| |
if (!defined($recursive)) { $recursive = 1; } |
| |
my $bailout = shift; |
| |
if (!defined($bailout)) { $bailout = 0; } |
| |
my $showall = shift; |
| |
# Create the necessary iterator. |
| |
if (!ref($map)) { # assume it's a url of a map. |
| |
$map = $self->getResourceByUrl($map); |
| |
} |
| |
|
| |
# If nothing was passed, assume top-level map |
| |
if (!$map) { |
| |
$map = $self->getById('0.0'); |
| |
} |
| |
|
| |
# Check the map's validity. |
| |
if (!$map->is_map()) { |
| |
# Oh, to throw an exception.... how I'd love that! |
| |
return (); |
| |
} |
| |
|
| |
# Get an iterator. |
| |
my $it = $self->getIterator($map->map_start(), $map->map_finish(), |
| |
undef, $recursive, $showall); |
| |
|
| |
my @resources = (); |
| |
|
| |
if (&$filterFunc($map)) { |
| |
push(@resources, $map); |
| |
} |
| |
|
| |
# Run down the iterator and collect the resources. |
| |
my $curRes; |
| |
|
| |
while ($curRes = $it->next()) { |
| |
if (ref($curRes)) { |
| |
if (!&$filterFunc($curRes)) { |
| |
next; |
| |
} |
| |
|
| |
push(@resources, $curRes); |
| |
|
| |
if ($bailout) { |
| |
return @resources; |
| |
} |
| |
} |
| |
|
| # ------------------------------------------------------------- Find out status |
|
| # return codes |
|
| # tcode (timecode) |
|
| # 1: will open later |
|
| # 2: is open and not past due yet |
|
| # 3: is past due date |
|
| # 4: due in the next 24 hours |
|
| # |
|
| # code (curent solved status) |
|
| # 1: not attempted |
|
| # 2: attempted but wrong, or incorrect by instructor |
|
| # 3: solved or correct by instructor |
|
| # 4: partially correct (one or more parts correct) |
|
| # "excused" needs to be supported, but is not yet. |
|
| sub astatus { |
|
| my $rid=shift; |
|
| my $code=0; |
|
| my $ctext=''; |
|
| $rid=~/(\d+)\.(\d+)/; |
|
| my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'. |
|
| &Apache::lonnet::declutter($hash{'src_'.$rid}); |
|
| my %duedate=(); |
|
| my %opendate=(); |
|
| my %answerdate=(); |
|
| # need to always check part 0's open/due/answer status |
|
| foreach (sort(split(/\,/,&Apache::lonnet::metadata($hash{'src_'.$rid},'keys')))) { |
|
| if ($_=~/^parameter\_(.*)\_opendate$/) { |
|
| my $part=$1; |
|
| $duedate{$part}=&parmval($part.'.duedate',$symb); |
|
| $opendate{$part}=&parmval($part.'.opendate',$symb); |
|
| $answerdate{$part}=&parmval($part.'.answerdate',$symb); |
|
| } |
|
| } |
|
| my $now=time; |
|
| my $tcode=0; |
|
| |
|
| my %returnhash=&Apache::lonnet::restore($symb); |
|
| |
|
| foreach (sort(keys(%opendate))) { |
|
| my $duedate=$duedate{$_}; |
|
| my $opendate=$opendate{$_}; |
|
| my $answerdate=$answerdate{$_}; |
|
| my $preface=''; |
|
| unless ($_ eq '0') { $preface=' Part: '.$_.' '; } |
|
| if ($opendate) { |
|
| if ($now<$duedate || (!$duedate)) { |
|
| unless ($tcode==4) { $tcode=2; } |
|
| if ($duedate) { |
|
| $ctext.=$preface.'Due: '.localtime($duedate); |
|
| } else { |
|
| $ctext.=$preface.'No Due Date'; |
|
| } |
|
| if ($now<$opendate) { |
|
| unless ($tcode) { $tcode=1; } |
|
| $ctext.=$preface.'Open: '.localtime($opendate); |
|
| } |
|
| if ($duedate && $duedate-$now<86400) { |
|
| $tcode=4; |
|
| $ctext.=$preface.'Due: '.localtime($duedate); |
|
| } |
|
| } else { |
|
| unless (($tcode==4) || ($tcode eq 2)) { $tcode=3; } |
|
| if ($now<$answerdate) { |
|
| $ctext.='Answer: '.localtime($duedate); |
|
| } |
|
| } |
|
| } else { |
|
| unless (($tcode==2) || ($tcode==4)) { $tcode=1; } |
|
| } |
|
| |
|
| my $status=$returnhash{'resource.'.$_.'.solved'}; |
|
| |
|
| if ($status eq 'correct_by_student') { |
|
| if ($code==0||$code==3) { $code=3; } else { $code=4; } |
|
| $ctext.=' solved'; |
|
| } elsif ($status eq 'correct_by_override') { |
|
| if ($code==0||$code==3) { $code=3; } else { $code=4; } |
|
| $ctext.=' override'; |
|
| } elsif ($status eq 'incorrect_attempted') { |
|
| if ($code!=4 && $code!=3) { $code=2; } |
|
| if ($code==3) { $code=4; } |
|
| $ctext.=' ('. |
|
| ($returnhash{'resource.'.$_.'.tries'}? |
|
| $returnhash{'resource.'.$_.'.tries'}:'0'); |
|
| my $numtries = &parmval($_.'.maxtries',$symb); |
|
| if ($numtries) { $ctext.='/'.$numtries.' tries'; } |
|
| $ctext.=')'; |
|
| } elsif ($status eq 'incorrect_by_override') { |
|
| if ($code!=4 && $code!=3) { $code=2; } |
|
| if ($code==3) { $code=4; } |
|
| $ctext.=' override'; |
|
| } elsif ($status eq 'excused') { |
|
| if ($code==0||$code==3) { $code=3; } else { $code=4; } |
|
| $ctext.=' excused'; |
|
| } else { |
|
| if ($code==0) { $code=1; } |
|
| } |
|
| } |
} |
| |
|
| return 'p'.$code.$tcode.'"'.$ctext.'"'; |
return @resources; |
| } |
} |
| |
|
| |
sub hasResource { |
| |
my $self = shift; |
| |
my $map = shift; |
| |
my $filterFunc = shift; |
| |
my $recursive = shift; |
| |
my $showall = shift; |
| |
|
| |
return scalar($self->retrieveResources($map, $filterFunc, $recursive, 1, $showall)) > 0; |
| |
} |
| |
|
| sub addresource { |
sub usedVersion { |
| my ($resource,$sofar,$rid,$showtypes,$indent,$linkid)=@_; |
my $self = shift; |
| if ($showtypes eq 'problems') { |
my $linkurl = shift; |
| if ($resource!~/\.(problem|exam|quiz|assess|survey|form)$/) { |
return $self->navhash("version_$linkurl"); |
| return; |
} |
| } |
|
| |
1; |
| |
|
| |
package Apache::lonnavmaps::iterator; |
| |
use Scalar::Util qw(weaken); |
| |
use Apache::lonnet; |
| |
|
| |
=pod |
| |
|
| |
=back |
| |
|
| |
=head1 Object: navmap Iterator |
| |
|
| |
An I<iterator> encapsulates the logic required to traverse a data |
| |
structure. navmap uses an iterator to traverse the course map |
| |
according to the criteria you wish to use. |
| |
|
| |
To obtain an iterator, call the B<getIterator>() function of a |
| |
B<navmap> object. (Do not instantiate Apache::lonnavmaps::iterator |
| |
directly.) This will return a reference to the iterator: |
| |
|
| |
C<my $resourceIterator = $navmap-E<gt>getIterator();> |
| |
|
| |
To get the next thing from the iterator, call B<next>: |
| |
|
| |
C<my $nextThing = $resourceIterator-E<gt>next()> |
| |
|
| |
getIterator behaves as follows: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getIterator>(firstResource, finishResource, filterHash, condition, forceTop, returnTopMap): |
| |
|
| |
All parameters are optional. firstResource is a resource reference |
| |
corresponding to where the iterator should start. It defaults to |
| |
navmap->firstResource() for the corresponding nav map. finishResource |
| |
corresponds to where you want the iterator to end, defaulting to |
| |
navmap->finishResource(). filterHash is a hash used as a set |
| |
containing strings representing the resource IDs, defaulting to |
| |
empty. Condition is a 1 or 0 that sets what to do with the filter |
| |
hash: If a 0, then only resources that exist IN the filterHash will be |
| |
recursed on. If it is a 1, only resources NOT in the filterHash will |
| |
be recursed on. Defaults to 0. forceTop is a boolean value. If it is |
| |
false (default), the iterator will only return the first level of map |
| |
that is not just a single, 'redirecting' map. If true, the iterator |
| |
will return all information, starting with the top-level map, |
| |
regardless of content. returnTopMap, if true (default false), will |
| |
cause the iterator to return the top-level map object (resource 0.0) |
| |
before anything else. |
| |
|
| |
Thus, by default, only top-level resources will be shown. Change the |
| |
condition to a 1 without changing the hash, and all resources will be |
| |
shown. Changing the condition to 1 and including some values in the |
| |
hash will allow you to selectively suppress parts of the navmap, while |
| |
leaving it on 0 and adding things to the hash will allow you to |
| |
selectively add parts of the nav map. See the handler code for |
| |
examples. |
| |
|
| |
The iterator will return either a reference to a resource object, or a |
| |
token representing something in the map, such as the beginning of a |
| |
new branch. The possible tokens are: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<END_ITERATOR>: |
| |
|
| |
The iterator has returned all that it's going to. Further calls to the |
| |
iterator will just produce more of these. This is a "false" value, and |
| |
is the only false value the iterator which will be returned, so it can |
| |
be used as a loop sentinel. |
| |
|
| |
=item * B<BEGIN_MAP>: |
| |
|
| |
A new map is being recursed into. This is returned I<after> the map |
| |
resource itself is returned. |
| |
|
| |
=item * B<END_MAP>: |
| |
|
| |
The map is now done. |
| |
|
| |
=item * B<BEGIN_BRANCH>: |
| |
|
| |
A branch is now starting. The next resource returned will be the first |
| |
in that branch. |
| |
|
| |
=item * B<END_BRANCH>: |
| |
|
| |
The branch is now done. |
| |
|
| |
=back |
| |
|
| |
The tokens are retreivable via methods on the iterator object, i.e., |
| |
$iterator->END_MAP. |
| |
|
| |
Maps can contain empty resources. The iterator will automatically skip |
| |
over such resources, but will still treat the structure |
| |
correctly. Thus, a complicated map with several branches, but |
| |
consisting entirely of empty resources except for one beginning or |
| |
ending resource, will cause a lot of BRANCH_STARTs and BRANCH_ENDs, |
| |
but only one resource will be returned. |
| |
|
| |
=back |
| |
|
| |
=head2 Normal Usage |
| |
|
| |
Normal usage of the iterator object is to do the following: |
| |
|
| |
my $it = $navmap->getIterator([your params here]); |
| |
my $curRes; |
| |
while ($curRes = $it->next()) { |
| |
[your logic here] |
| |
} |
| |
|
| |
Note that inside of the loop, it's frequently useful to check if |
| |
"$curRes" is a reference or not with the reference function; only |
| |
resource objects will be references, and any non-references will |
| |
be the tokens described above. |
| |
|
| |
Also note there is some old code floating around that trys to track |
| |
the depth of the iterator to see when it's done; do not copy that |
| |
code. It is difficult to get right and harder to understand than |
| |
this. They should be migrated to this new style. |
| |
|
| |
=cut |
| |
|
| |
# Here are the tokens for the iterator: |
| |
|
| |
sub END_ITERATOR { return 0; } |
| |
sub BEGIN_MAP { return 1; } # begining of a new map |
| |
sub END_MAP { return 2; } # end of the map |
| |
sub BEGIN_BRANCH { return 3; } # beginning of a branch |
| |
sub END_BRANCH { return 4; } # end of a branch |
| |
sub FORWARD { return 1; } # go forward |
| |
sub BACKWARD { return 2; } |
| |
|
| |
sub min { |
| |
(my $a, my $b) = @_; |
| |
if ($a < $b) { return $a; } else { return $b; } |
| |
} |
| |
|
| |
sub new { |
| |
# magic invocation to create a class instance |
| |
my $proto = shift; |
| |
my $class = ref($proto) || $proto; |
| |
my $self = {}; |
| |
|
| |
weaken($self->{NAV_MAP} = shift); |
| |
return undef unless ($self->{NAV_MAP}); |
| |
|
| |
# Handle the parameters |
| |
$self->{FIRST_RESOURCE} = shift || $self->{NAV_MAP}->firstResource(); |
| |
$self->{FINISH_RESOURCE} = shift || $self->{NAV_MAP}->finishResource(); |
| |
|
| |
# If the given resources are just the ID of the resource, get the |
| |
# objects |
| |
if (!ref($self->{FIRST_RESOURCE})) { $self->{FIRST_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FIRST_RESOURCE}); } |
| |
if (!ref($self->{FINISH_RESOURCE})) { $self->{FINISH_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FINISH_RESOURCE}); } |
| |
|
| |
$self->{FILTER} = shift; |
| |
|
| |
# A hash, used as a set, of resource already seen |
| |
$self->{ALREADY_SEEN} = shift; |
| |
if (!defined($self->{ALREADY_SEEN})) { $self->{ALREADY_SEEN} = {} }; |
| |
$self->{CONDITION} = shift; |
| |
|
| |
# Do we want to automatically follow "redirection" maps? |
| |
$self->{FORCE_TOP} = shift; |
| |
|
| |
# Do we want to return the top-level map object (resource 0.0)? |
| |
$self->{RETURN_0} = shift; |
| |
# have we done that yet? |
| |
$self->{HAVE_RETURNED_0} = 0; |
| |
|
| |
# Now, we need to pre-process the map, by walking forward and backward |
| |
# over the parts of the map we're going to look at. |
| |
|
| |
# The processing steps are exactly the same, except for a few small |
| |
# changes, so I bundle those up in the following list of two elements: |
| |
# (direction_to_iterate, VAL_name, next_resource_method_to_call, |
| |
# first_resource). |
| |
# This prevents writing nearly-identical code twice. |
| |
my @iterations = ( [FORWARD(), 'TOP_DOWN_VAL', 'getNext', |
| |
'FIRST_RESOURCE'], |
| |
[BACKWARD(), 'BOT_UP_VAL', 'getPrevious', |
| |
'FINISH_RESOURCE'] ); |
| |
|
| |
my $maxDepth = 0; # tracks max depth |
| |
|
| |
# If there is only one resource in this map, and it's a map, we |
| |
# want to remember that, so the user can ask for the first map |
| |
# that isn't just a redirector. |
| |
my $resource; my $resourceCount = 0; |
| |
|
| |
# Documentation on this algorithm can be found in the CVS repository at |
| |
# /docs/lonnavdocs; these "**#**" markers correspond to documentation |
| |
# in that file. |
| |
# **1** |
| |
|
| |
foreach my $pass (@iterations) { |
| |
my $direction = $pass->[0]; |
| |
my $valName = $pass->[1]; |
| |
my $nextResourceMethod = $pass->[2]; |
| |
my $firstResourceName = $pass->[3]; |
| |
|
| |
my $iterator = Apache::lonnavmaps::DFSiterator->new($self->{NAV_MAP}, |
| |
$self->{FIRST_RESOURCE}, |
| |
$self->{FINISH_RESOURCE}, |
| |
{}, undef, 0, $direction); |
| |
|
| |
# prime the recursion |
| |
$self->{$firstResourceName}->{DATA}->{$valName} = 0; |
| |
$iterator->next(); |
| |
my $curRes = $iterator->next(); |
| |
my $depth = 1; |
| |
while ($depth > 0) { |
| |
if ($curRes == $iterator->BEGIN_MAP()) { $depth++; } |
| |
if ($curRes == $iterator->END_MAP()) { $depth--; } |
| |
|
| |
if (ref($curRes)) { |
| |
# If there's only one resource, this will save it |
| |
# we have to filter empty resources from consideration here, |
| |
# or even "empty", redirecting maps have two (start & finish) |
| |
# or three (start, finish, plus redirector) |
| |
if($direction == FORWARD && $curRes->src()) { |
| |
$resource = $curRes; $resourceCount++; |
| |
} |
| |
my $resultingVal = $curRes->{DATA}->{$valName}; |
| |
my $nextResources = $curRes->$nextResourceMethod(); |
| |
my $nextCount = scalar(@{$nextResources}); |
| |
|
| |
if ($nextCount == 1) { # **3** |
| |
my $current = $nextResources->[0]->{DATA}->{$valName} || 999999999; |
| |
$nextResources->[0]->{DATA}->{$valName} = min($resultingVal, $current); |
| |
} |
| |
|
| |
if ($nextCount > 1) { # **4** |
| |
foreach my $res (@{$nextResources}) { |
| |
my $current = $res->{DATA}->{$valName} || 999999999; |
| |
$res->{DATA}->{$valName} = min($current, $resultingVal + 1); |
| |
} |
| |
} |
| |
} |
| |
|
| |
# Assign the final val (**2**) |
| |
if (ref($curRes) && $direction == BACKWARD()) { |
| |
my $finalDepth = min($curRes->{DATA}->{TOP_DOWN_VAL}, |
| |
$curRes->{DATA}->{BOT_UP_VAL}); |
| |
|
| |
$curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth; |
| |
if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;} |
| |
} |
| |
|
| |
$curRes = $iterator->next(); |
| |
} |
| } |
} |
| my $brepriv=&Apache::lonnet::allowed('bre',$resource); |
|
| if ($hash{'src_'.$rid}) { |
# Check: Was this only one resource, a map? |
| if (($brepriv eq '2') || ($brepriv eq 'F')) { |
if ($resourceCount == 1 && $resource->is_sequence() && !$self->{FORCE_TOP}) { |
| my $pprefix=''; |
my $firstResource = $resource->map_start(); |
| if ($resource=~/\.(problem|exam|quiz|assess|survey|form)$/) { |
my $finishResource = $resource->map_finish(); |
| $pprefix=&astatus($rid); |
return |
| } |
Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource, |
| $$sofar++; |
$finishResource, $self->{FILTER}, |
| if ($indent) { $pprefix='i'.$indent.','.$pprefix; } |
$self->{ALREADY_SEEN}, |
| if ($linkid) { $pprefix='l'.$linkid.','.$pprefix; } |
$self->{CONDITION}, |
| if (defined($rows[$$sofar])) { |
$self->{FORCE_TOP}); |
| $rows[$$sofar].='&'.$pprefix.$rid; |
|
| } else { |
} |
| $rows[$$sofar]=$pprefix.$rid; |
|
| } |
# Set up some bookkeeping information. |
| } |
$self->{CURRENT_DEPTH} = 0; |
| |
$self->{MAX_DEPTH} = $maxDepth; |
| |
$self->{STACK} = []; |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| |
$self->{FINISHED} = 0; # When true, the iterator has finished |
| |
|
| |
for (my $i = 0; $i <= $self->{MAX_DEPTH}; $i++) { |
| |
push @{$self->{STACK}}, []; |
| } |
} |
| |
|
| |
# Prime the recursion w/ the first resource **5** |
| |
push @{$self->{STACK}->[0]}, $self->{FIRST_RESOURCE}; |
| |
$self->{ALREADY_SEEN}->{$self->{FIRST_RESOURCE}->{ID}} = 1; |
| |
|
| |
bless ($self); |
| |
|
| |
return $self; |
| } |
} |
| |
|
| sub followlinks () { |
sub next { |
| my ($rid,$sofar,$beenhere,$further,$showtypes,$indent,$linkid)=@_; |
my $self = shift; |
| my $mincond=1; |
my $closeAllPages=shift; |
| my $next=''; |
if ($self->{FINISHED}) { |
| foreach (split(/\,/,$hash{'to_'.$rid})) { |
return END_ITERATOR(); |
| my $thiscond= |
|
| &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}}); |
|
| if ($thiscond>=$mincond) { |
|
| if ($next) { |
|
| $next.=','.$_.':'.$thiscond; |
|
| } else { |
|
| $next=$_.':'.$thiscond; |
|
| } |
|
| if ($thiscond>$mincond) { $mincond=$thiscond; } |
|
| } |
|
| } |
} |
| my $col=0; |
|
| &Apache::lonxml::debug("following links -$next-"); |
# If we want to return the top-level map object, and haven't yet, |
| foreach (split(/\,/,$next)) { |
# do so. |
| my ($nextlinkid,$condval)=split(/\:/,$_); |
if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0}) { |
| if ($condval>=$mincond) { |
$self->{HAVE_RETURNED_0} = 1; |
| my $now=&tracetable($sofar,$hash{'goesto_'.$nextlinkid}, |
return $self->{NAV_MAP}->getById('0.0'); |
| $beenhere,$showtypes,$indent,$linkid); |
} |
| if ($now>$further) { |
if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0_BEGIN_MAP}) { |
| if ($col>0) { |
$self->{HAVE_RETURNED_0_BEGIN_MAP} = 1; |
| my $string; |
return $self->BEGIN_MAP(); |
| for(my $i=0;$i<$col;$i++) { $string.='&'; } |
} |
| for(my $i=$further+1;$now-1>$i;$i++) { |
|
| $rows[$i]=$string.$rows[$i]; |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| } |
# grab the next from the recursive iterator |
| } |
my $next = $self->{RECURSIVE_ITERATOR}->next($closeAllPages); |
| $further=$now; |
|
| |
# is it a begin or end map? If so, update the depth |
| |
if ($next == BEGIN_MAP() ) { $self->{RECURSIVE_DEPTH}++; } |
| |
if ($next == END_MAP() ) { $self->{RECURSIVE_DEPTH}--; } |
| |
|
| |
# Are we back at depth 0? If so, stop recursing |
| |
if ($self->{RECURSIVE_DEPTH} == 0) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| |
} |
| |
|
| |
return $next; |
| |
} |
| |
|
| |
if (defined($self->{FORCE_NEXT})) { |
| |
my $tmp = $self->{FORCE_NEXT}; |
| |
$self->{FORCE_NEXT} = undef; |
| |
return $tmp; |
| |
} |
| |
|
| |
# Have we not yet begun? If not, return BEGIN_MAP and |
| |
# remember we've started. |
| |
if ( !$self->{STARTED} ) { |
| |
$self->{STARTED} = 1; |
| |
return $self->BEGIN_MAP(); |
| |
} |
| |
|
| |
# Here's the guts of the iterator. |
| |
|
| |
# Find the next resource, if any. |
| |
my $found = 0; |
| |
my $i = $self->{MAX_DEPTH}; |
| |
my $newDepth; |
| |
my $here; |
| |
while ( $i >= 0 && !$found ) { |
| |
if ( scalar(@{$self->{STACK}->[$i]}) > 0 ) { # **6** |
| |
$here = pop @{$self->{STACK}->[$i]}; # **7** |
| |
$found = 1; |
| |
$newDepth = $i; |
| |
} |
| |
$i--; |
| |
} |
| |
|
| |
# If we still didn't find anything, we're done. |
| |
if ( !$found ) { |
| |
# We need to get back down to the correct branch depth |
| |
if ( $self->{CURRENT_DEPTH} > 0 ) { |
| |
$self->{CURRENT_DEPTH}--; |
| |
return END_BRANCH(); |
| |
} else { |
| |
$self->{FINISHED} = 1; |
| |
return END_MAP(); |
| |
} |
| |
} |
| |
|
| |
# If this is not a resource, it must be an END_BRANCH marker we want |
| |
# to return directly. |
| |
if (!ref($here)) { # **8** |
| |
if ($here == END_BRANCH()) { # paranoia, in case of later extension |
| |
$self->{CURRENT_DEPTH}--; |
| |
return $here; |
| |
} |
| |
} |
| |
|
| |
# Otherwise, it is a resource and it's safe to store in $self->{HERE} |
| |
$self->{HERE} = $here; |
| |
|
| |
# Get to the right level |
| |
if ( $self->{CURRENT_DEPTH} > $newDepth ) { |
| |
push @{$self->{STACK}->[$newDepth]}, $here; |
| |
$self->{CURRENT_DEPTH}--; |
| |
return END_BRANCH(); |
| |
} |
| |
if ( $self->{CURRENT_DEPTH} < $newDepth) { |
| |
push @{$self->{STACK}->[$newDepth]}, $here; |
| |
$self->{CURRENT_DEPTH}++; |
| |
return BEGIN_BRANCH(); |
| |
} |
| |
|
| |
# If we made it here, we have the next resource, and we're at the |
| |
# right branch level. So let's examine the resource for where |
| |
# we can get to from here. |
| |
|
| |
# So we need to look at all the resources we can get to from here, |
| |
# categorize them if we haven't seen them, remember if we have a new |
| |
my $nextUnfiltered = $here->getNext(); |
| |
my $maxDepthAdded = -1; |
| |
|
| |
for (@$nextUnfiltered) { |
| |
if (!defined($self->{ALREADY_SEEN}->{$_->{ID}})) { |
| |
my $depth = $_->{DATA}->{DISPLAY_DEPTH}; |
| |
push @{$self->{STACK}->[$depth]}, $_; |
| |
$self->{ALREADY_SEEN}->{$_->{ID}} = 1; |
| |
if ($maxDepthAdded < $depth) { $maxDepthAdded = $depth; } |
| |
} |
| |
} |
| |
|
| |
# Is this the end of a branch? If so, all of the resources examined above |
| |
# led to lower levels than the one we are currently at, so we push a END_BRANCH |
| |
# marker onto the stack so we don't forget. |
| |
# Example: For the usual A(BC)(DE)F case, when the iterator goes down the |
| |
# BC branch and gets to C, it will see F as the only next resource, but it's |
| |
# one level lower. Thus, this is the end of the branch, since there are no |
| |
# more resources added to this level or above. |
| |
# We don't do this if the examined resource is the finish resource, |
| |
# because the condition given above is true, but the "END_MAP" will |
| |
# take care of things and we should already be at depth 0. |
| |
my $isEndOfBranch = $maxDepthAdded < $self->{CURRENT_DEPTH}; |
| |
if ($isEndOfBranch && $here != $self->{FINISH_RESOURCE}) { # **9** |
| |
push @{$self->{STACK}->[$self->{CURRENT_DEPTH}]}, END_BRANCH(); |
| |
} |
| |
|
| |
# That ends the main iterator logic. Now, do we want to recurse |
| |
# down this map (if this resource is a map)? |
| |
if ( ($self->{HERE}->is_sequence() || (!$closeAllPages && $self->{HERE}->is_page())) && |
| |
(defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION})) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 1; |
| |
my $firstResource = $self->{HERE}->map_start(); |
| |
my $finishResource = $self->{HERE}->map_finish(); |
| |
|
| |
$self->{RECURSIVE_ITERATOR} = |
| |
Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource, |
| |
$finishResource, $self->{FILTER}, |
| |
$self->{ALREADY_SEEN}, |
| |
$self->{CONDITION}, |
| |
$self->{FORCE_TOP}); |
| |
} |
| |
|
| |
# If this is a blank resource, don't actually return it. |
| |
# Should you ever find you need it, make sure to add an option to the code |
| |
# that you can use; other things depend on this behavior. |
| |
my $browsePriv = $self->{HERE}->browsePriv(); |
| |
if (!$self->{HERE}->src() || |
| |
(!($browsePriv eq 'F') && !($browsePriv eq '2')) ) { |
| |
return $self->next($closeAllPages); |
| |
} |
| |
|
| |
return $self->{HERE}; |
| |
|
| |
} |
| |
|
| |
=pod |
| |
|
| |
The other method available on the iterator is B<getStack>, which |
| |
returns an array populated with the current 'stack' of maps, as |
| |
references to the resource objects. Example: This is useful when |
| |
making the navigation map, as we need to check whether we are under a |
| |
page map to see if we need to link directly to the resource, or to the |
| |
page. The first elements in the array will correspond to the top of |
| |
the stack (most inclusive map). |
| |
|
| |
=cut |
| |
|
| |
sub getStack { |
| |
my $self=shift; |
| |
|
| |
my @stack; |
| |
|
| |
$self->populateStack(\@stack); |
| |
|
| |
return \@stack; |
| |
} |
| |
|
| |
# Private method: Calls the iterators recursively to populate the stack. |
| |
sub populateStack { |
| |
my $self=shift; |
| |
my $stack = shift; |
| |
|
| |
push @$stack, $self->{HERE} if ($self->{HERE}); |
| |
|
| |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| |
$self->{RECURSIVE_ITERATOR}->populateStack($stack); |
| |
} |
| |
} |
| |
|
| |
1; |
| |
|
| |
package Apache::lonnavmaps::DFSiterator; |
| |
use Scalar::Util qw(weaken); |
| |
use Apache::lonnet; |
| |
|
| |
# Not documented in the perldoc: This is a simple iterator that just walks |
| |
# through the nav map and presents the resources in a depth-first search |
| |
# fashion, ignorant of conditionals, randomized resources, etc. It presents |
| |
# BEGIN_MAP and END_MAP, but does not understand branches at all. It is |
| |
# useful for pre-processing of some kind, and is in fact used by the main |
| |
# iterator that way, but that's about it. |
| |
# One could imagine merging this into the init routine of the main iterator, |
| |
# but this might as well be left separate, since it is possible some other |
| |
# use might be found for it. - Jeremy |
| |
|
| |
# Unlike the main iterator, this DOES return all resources, even blank ones. |
| |
# The main iterator needs them to correctly preprocess the map. |
| |
|
| |
sub BEGIN_MAP { return 1; } # begining of a new map |
| |
sub END_MAP { return 2; } # end of the map |
| |
sub FORWARD { return 1; } # go forward |
| |
sub BACKWARD { return 2; } |
| |
|
| |
# Params: Nav map ref, first resource id/ref, finish resource id/ref, |
| |
# filter hash ref (or undef), already seen hash or undef, condition |
| |
# (as in main iterator), direction FORWARD or BACKWARD (undef->forward). |
| |
sub new { |
| |
# magic invocation to create a class instance |
| |
my $proto = shift; |
| |
my $class = ref($proto) || $proto; |
| |
my $self = {}; |
| |
|
| |
weaken($self->{NAV_MAP} = shift); |
| |
return undef unless ($self->{NAV_MAP}); |
| |
|
| |
$self->{FIRST_RESOURCE} = shift || $self->{NAV_MAP}->firstResource(); |
| |
$self->{FINISH_RESOURCE} = shift || $self->{NAV_MAP}->finishResource(); |
| |
|
| |
# If the given resources are just the ID of the resource, get the |
| |
# objects |
| |
if (!ref($self->{FIRST_RESOURCE})) { $self->{FIRST_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FIRST_RESOURCE}); } |
| |
if (!ref($self->{FINISH_RESOURCE})) { $self->{FINISH_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FINISH_RESOURCE}); } |
| |
|
| |
$self->{FILTER} = shift; |
| |
|
| |
# A hash, used as a set, of resource already seen |
| |
$self->{ALREADY_SEEN} = shift; |
| |
if (!defined($self->{ALREADY_SEEN})) { $self->{ALREADY_SEEN} = {} }; |
| |
$self->{CONDITION} = shift; |
| |
$self->{DIRECTION} = shift || FORWARD(); |
| |
|
| |
# Flag: Have we started yet? |
| |
$self->{STARTED} = 0; |
| |
|
| |
# Should we continue calling the recursive iterator, if any? |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| |
# The recursive iterator, if any |
| |
$self->{RECURSIVE_ITERATOR} = undef; |
| |
# Are we recursing on a map, or a branch? |
| |
$self->{RECURSIVE_MAP} = 1; # we'll manually unset this when recursing on branches |
| |
# And the count of how deep it is, so that this iterator can keep track of |
| |
# when to pick back up again. |
| |
$self->{RECURSIVE_DEPTH} = 0; |
| |
|
| |
# For keeping track of our branches, we maintain our own stack |
| |
$self->{STACK} = []; |
| |
|
| |
# Start with the first resource |
| |
if ($self->{DIRECTION} == FORWARD) { |
| |
push @{$self->{STACK}}, $self->{FIRST_RESOURCE}; |
| |
} else { |
| |
push @{$self->{STACK}}, $self->{FINISH_RESOURCE}; |
| |
} |
| |
|
| |
bless($self); |
| |
return $self; |
| |
} |
| |
|
| |
sub next { |
| |
my $self = shift; |
| |
|
| |
# Are we using a recursive iterator? If so, pull from that and |
| |
# watch the depth; we want to resume our level at the correct time. |
| |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| |
# grab the next from the recursive iterator |
| |
my $next = $self->{RECURSIVE_ITERATOR}->next(); |
| |
|
| |
# is it a begin or end map? Update depth if so |
| |
if ($next == BEGIN_MAP() ) { $self->{RECURSIVE_DEPTH}++; } |
| |
if ($next == END_MAP() ) { $self->{RECURSIVE_DEPTH}--; } |
| |
|
| |
# Are we back at depth 0? If so, stop recursing. |
| |
if ($self->{RECURSIVE_DEPTH} == 0) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| |
} |
| |
|
| |
return $next; |
| |
} |
| |
|
| |
# Is there a current resource to grab? If not, then return |
| |
# END_MAP, which will end the iterator. |
| |
if (scalar(@{$self->{STACK}}) == 0) { |
| |
return $self->END_MAP(); |
| |
} |
| |
|
| |
# Have we not yet begun? If not, return BEGIN_MAP and |
| |
# remember that we've started. |
| |
if ( !$self->{STARTED} ) { |
| |
$self->{STARTED} = 1; |
| |
return $self->BEGIN_MAP; |
| |
} |
| |
|
| |
# Get the next resource in the branch |
| |
$self->{HERE} = pop @{$self->{STACK}}; |
| |
|
| |
# remember that we've seen this, so we don't return it again later |
| |
$self->{ALREADY_SEEN}->{$self->{HERE}->{ID}} = 1; |
| |
|
| |
# Get the next possible resources |
| |
my $nextUnfiltered; |
| |
if ($self->{DIRECTION} == FORWARD()) { |
| |
$nextUnfiltered = $self->{HERE}->getNext(); |
| |
} else { |
| |
$nextUnfiltered = $self->{HERE}->getPrevious(); |
| |
} |
| |
my $next = []; |
| |
|
| |
# filter the next possibilities to remove things we've |
| |
# already seen. |
| |
foreach my $item (@$nextUnfiltered) { |
| |
if (!defined($self->{ALREADY_SEEN}->{$item->{ID}})) { |
| |
push @$next, $item; |
| |
} |
| |
} |
| |
|
| |
while (@$next) { |
| |
# copy the next possibilities over to the stack |
| |
push @{$self->{STACK}}, shift @$next; |
| |
} |
| |
|
| |
# If this is a map and we want to recurse down it... (not filtered out) |
| |
if ($self->{HERE}->is_map() && |
| |
(defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION})) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 1; |
| |
my $firstResource = $self->{HERE}->map_start(); |
| |
my $finishResource = $self->{HERE}->map_finish(); |
| |
|
| |
$self->{RECURSIVE_ITERATOR} = |
| |
Apache::lonnavmaps::DFSiterator->new ($self->{NAV_MAP}, $firstResource, |
| |
$finishResource, $self->{FILTER}, $self->{ALREADY_SEEN}, |
| |
$self->{CONDITION}, $self->{DIRECTION}); |
| |
} |
| |
|
| |
return $self->{HERE}; |
| |
} |
| |
|
| |
# Identical to the full iterator methods of the same name. Hate to copy/paste |
| |
# but I also hate to "inherit" either iterator from the other. |
| |
|
| |
sub getStack { |
| |
my $self=shift; |
| |
|
| |
my @stack; |
| |
|
| |
$self->populateStack(\@stack); |
| |
|
| |
return \@stack; |
| |
} |
| |
|
| |
# Private method: Calls the iterators recursively to populate the stack. |
| |
sub populateStack { |
| |
my $self=shift; |
| |
my $stack = shift; |
| |
|
| |
push @$stack, $self->{HERE} if ($self->{HERE}); |
| |
|
| |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| |
$self->{RECURSIVE_ITERATOR}->populateStack($stack); |
| |
} |
| |
} |
| |
|
| |
1; |
| |
|
| |
package Apache::lonnavmaps::resource; |
| |
use Scalar::Util qw(weaken); |
| |
use Apache::lonnet; |
| |
|
| |
=pod |
| |
|
| |
=head1 Object: resource |
| |
|
| |
X<resource, navmap object> |
| |
A resource object encapsulates a resource in a resource map, allowing |
| |
easy manipulation of the resource, querying the properties of the |
| |
resource (including user properties), and represents a reference that |
| |
can be used as the canonical representation of the resource by |
| |
lonnavmap clients like renderers. |
| |
|
| |
A resource only makes sense in the context of a navmap, as some of the |
| |
data is stored in the navmap object. |
| |
|
| |
You will probably never need to instantiate this object directly. Use |
| |
Apache::lonnavmaps::navmap, and use the "start" method to obtain the |
| |
starting resource. |
| |
|
| |
Resource objects respect the parameter_hiddenparts, which suppresses |
| |
various parts according to the wishes of the map author. As of this |
| |
writing, there is no way to override this parameter, and suppressed |
| |
parts will never be returned, nor will their response types or ids be |
| |
stored. |
| |
|
| |
=head2 Overview |
| |
|
| |
A B<Resource> is the most granular type of object in LON-CAPA that can |
| |
be included in a course. It can either be a particular resource, like |
| |
an HTML page, external resource, problem, etc., or it can be a |
| |
container sequence, such as a "page" or a "map". |
| |
|
| |
To see a sequence from the user's point of view, please see the |
| |
B<Creating a Course: Maps and Sequences> chapter of the Author's |
| |
Manual. |
| |
|
| |
A Resource Object, once obtained from a navmap object via a B<getBy*> |
| |
method of the navmap, or from an iterator, allows you to query |
| |
information about that resource. |
| |
|
| |
Generally, you do not ever want to create a resource object yourself, |
| |
so creation has been left undocumented. Always retrieve resources |
| |
from navmap objects. |
| |
|
| |
=head3 Identifying Resources |
| |
|
| |
X<big hash>Every resource is identified by a Resource ID in the big hash that is |
| |
unique to that resource for a given course. X<resource ID, in big hash> |
| |
The Resource ID has the form #.#, where the first number is the same |
| |
for every resource in a map, and the second is unique. For instance, |
| |
for a course laid out like this: |
| |
|
| |
* Problem 1 |
| |
* Map |
| |
* Resource 2 |
| |
* Resource 3 |
| |
|
| |
C<Problem 1> and C<Map> will share a first number, and C<Resource 2> |
| |
C<Resource 3> will share a first number. The second number may end up |
| |
re-used between the two groups. |
| |
|
| |
The resource ID is only used in the big hash, but can be used in the |
| |
context of a course to identify a resource easily. (For instance, the |
| |
printing system uses it to record which resources from a sequence you |
| |
wish to print.) |
| |
|
| |
X<symb> X<resource, symb> |
| |
All resources also have B<symb>s, which uniquely identify a resource |
| |
in a course. Many internal LON-CAPA functions expect a symb. A symb |
| |
carries along with it the URL of the resource, and the map it appears |
| |
in. Symbs are much larger than resource IDs. |
| |
|
| |
=cut |
| |
|
| |
sub new { |
| |
# magic invocation to create a class instance |
| |
my $proto = shift; |
| |
my $class = ref($proto) || $proto; |
| |
my $self = {}; |
| |
|
| |
weaken($self->{NAV_MAP} = shift); |
| |
$self->{ID} = shift; |
| |
|
| |
# Store this new resource in the parent nav map's cache. |
| |
$self->{NAV_MAP}->{RESOURCE_CACHE}->{$self->{ID}} = $self; |
| |
$self->{RESOURCE_ERROR} = 0; |
| |
|
| |
# A hash that can be used by two-pass algorithms to store data |
| |
# about this resource in. Not used by the resource object |
| |
# directly. |
| |
$self->{DATA} = {}; |
| |
|
| |
bless($self); |
| |
|
| |
return $self; |
| |
} |
| |
|
| |
# private function: simplify the NAV_HASH lookups we keep doing |
| |
# pass the name, and to automatically append my ID, pass a true val on the |
| |
# second param |
| |
sub navHash { |
| |
my $self = shift; |
| |
my $param = shift; |
| |
my $id = shift; |
| |
my $arg = $param . ($id?$self->{ID}:""); |
| |
if (defined($arg)) { |
| |
return $self->{NAV_MAP}->navhash($arg); |
| |
} |
| |
return; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=head2 Methods |
| |
|
| |
Once you have a resource object, here's what you can do with it: |
| |
|
| |
=head3 Attribute Retrieval |
| |
|
| |
Every resource has certain attributes that can be retrieved and used: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<ID>: Every resource has an ID that is unique for that |
| |
resource in the course it is in. The ID is actually in the hash |
| |
representing the resource, so for a resource object $res, obtain |
| |
it via C<$res->{ID}). |
| |
|
| |
=item * B<compTitle>: |
| |
|
| |
Returns a "composite title", that is equal to $res->title() if the |
| |
resource has a title, and is otherwise the last part of the URL (e.g., |
| |
"problem.problem"). |
| |
|
| |
=item * B<ext>: |
| |
|
| |
Returns true if the resource is external. |
| |
|
| |
=item * B<kind>: |
| |
|
| |
Returns the kind of the resource from the compiled nav map. |
| |
|
| |
=item * B<randomout>: |
| |
|
| |
Returns true if this resource was chosen to NOT be shown to the user |
| |
by the random map selection feature. In other words, this is usually |
| |
false. |
| |
|
| |
=item * B<randompick>: |
| |
|
| |
Returns the number of randomly picked items for a map if the randompick |
| |
feature is being used on the map. |
| |
|
| |
=item * B<randomorder>: |
| |
|
| |
Returns true for a map if the randomorder feature is being used on the |
| |
map. |
| |
|
| |
=item * B<src>: |
| |
|
| |
Returns the source for the resource. |
| |
|
| |
=item * B<symb>: |
| |
|
| |
Returns the symb for the resource. |
| |
|
| |
=item * B<title>: |
| |
|
| |
Returns the title of the resource. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
# These info functions can be used directly, as they don't return |
| |
# resource information. |
| |
sub comesfrom { my $self=shift; return $self->navHash("comesfrom_", 1); } |
| |
sub encrypted { my $self=shift; return $self->navHash("encrypted_", 1); } |
| |
sub ext { my $self=shift; return $self->navHash("ext_", 1) eq 'true:'; } |
| |
sub from { my $self=shift; return $self->navHash("from_", 1); } |
| |
# considered private and undocumented |
| |
sub goesto { my $self=shift; return $self->navHash("goesto_", 1); } |
| |
sub kind { my $self=shift; return $self->navHash("kind_", 1); } |
| |
sub randomout { my $self=shift; return $self->navHash("randomout_", 1); } |
| |
sub randompick { |
| |
my $self = shift; |
| |
my $randompick = $self->parmval('randompick'); |
| |
return $randompick; |
| |
} |
| |
sub randomorder { |
| |
my $self = shift; |
| |
my $randomorder = $self->parmval('randomorder'); |
| |
return ($randomorder =~ /^yes$/i); |
| |
} |
| |
sub link { |
| |
my $self=shift; |
| |
if ($self->encrypted()) { return &Apache::lonenc::encrypted($self->src); } |
| |
return $self->src; |
| |
} |
| |
sub src { |
| |
my $self=shift; |
| |
return $self->navHash("src_", 1); |
| |
} |
| |
sub shown_symb { |
| |
my $self=shift; |
| |
if ($self->encrypted()) {return &Apache::lonenc::encrypted($self->symb());} |
| |
return $self->symb(); |
| |
} |
| |
sub id { |
| |
my $self=shift; |
| |
return $self->{ID}; |
| |
} |
| |
sub enclosing_map_src { |
| |
my $self=shift; |
| |
(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/; |
| |
return $self->navHash('map_id_'.$first); |
| |
} |
| |
sub symb { |
| |
my $self=shift; |
| |
(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/; |
| |
my $symbSrc = &Apache::lonnet::declutter($self->src()); |
| |
my $symb = &Apache::lonnet::declutter($self->navHash('map_id_'.$first)) |
| |
. '___' . $second . '___' . $symbSrc; |
| |
return &Apache::lonnet::symbclean($symb); |
| |
} |
| |
sub wrap_symb { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->wrap_symb($self->symb()); |
| |
} |
| |
sub title { |
| |
my $self=shift; |
| |
if ($self->{ID} eq '0.0') { |
| |
# If this is the top-level map, return the title of the course |
| |
# since this map can not be titled otherwise. |
| |
return $env{'course.'.$env{'request.course.id'}.'.description'}; |
| |
} |
| |
return $self->navHash("title_", 1); } |
| |
# considered private and undocumented |
| |
sub to { my $self=shift; return $self->navHash("to_", 1); } |
| |
sub condition { |
| |
my $self=shift; |
| |
my $undercond=$self->navHash("undercond_", 1); |
| |
if (!defined($undercond)) { return 1; }; |
| |
my $condid=$self->navHash("condid_$undercond"); |
| |
if (!defined($condid)) { return 1; }; |
| |
my $condition=&Apache::lonnet::directcondval($condid); |
| |
return $condition; |
| |
} |
| |
sub condval { |
| |
my $self=shift; |
| |
my ($pathname,$filename) = |
| |
&Apache::lonnet::split_uri_for_cond($self->src()); |
| |
|
| |
my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~ |
| |
/\&\Q$filename\E\:([\d\|]+)\&/); |
| |
if ($match) { |
| |
return &Apache::lonnet::condval($1); |
| |
} |
| |
return 0; |
| |
} |
| |
sub compTitle { |
| |
my $self = shift; |
| |
my $title = $self->title(); |
| |
$title=~s/\&colon\;/\:/gs; |
| |
if (!$title) { |
| |
$title = $self->src(); |
| |
$title = substr($title, rindex($title, '/') + 1); |
| |
} |
| |
return $title; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<Predicate Testing the Resource> |
| |
|
| |
These methods are shortcuts to deciding if a given resource has a given property. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<is_map>: |
| |
|
| |
Returns true if the resource is a map type. |
| |
|
| |
=item * B<is_problem>: |
| |
|
| |
Returns true if the resource is a problem type, false |
| |
otherwise. (Looks at the extension on the src field; might need more |
| |
to work correctly.) |
| |
|
| |
=item * B<is_page>: |
| |
|
| |
Returns true if the resource is a page. |
| |
|
| |
=item * B<is_sequence>: |
| |
|
| |
Returns true if the resource is a sequence. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub hasResource { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->hasResource(@_); |
| |
} |
| |
|
| |
sub retrieveResources { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->retrieveResources(@_); |
| |
} |
| |
|
| |
sub is_exam { |
| |
my ($self,$part) = @_; |
| |
my $type = $self->parmval('type',$part); |
| |
if ($type eq 'exam') { |
| |
return 1; |
| |
} |
| |
if ($self->src() =~ /\.(exam)$/) { |
| |
return 1; |
| |
} |
| |
return 0; |
| |
} |
| |
sub is_html { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return ($src =~ /html$/); |
| |
} |
| |
sub is_map { my $self=shift; return defined($self->navHash("is_map_", 1)); } |
| |
sub is_page { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return $self->navHash("is_map_", 1) && |
| |
$self->navHash("map_type_" . $self->map_pc()) eq 'page'; |
| |
} |
| |
sub is_practice { |
| |
my $self=shift; |
| |
my ($part) = @_; |
| |
my $type = $self->parmval('type',$part); |
| |
if ($type eq 'practice') { |
| |
return 1; |
| |
} |
| |
return 0; |
| |
} |
| |
sub is_problem { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
if ($src =~ /\.(problem|exam|quiz|assess|survey|form|library|task)$/) { |
| |
return !($self->is_practice()); |
| |
} |
| |
return 0; |
| |
} |
| |
# |
| |
# The has below is the set of status that are considered 'incomplete' |
| |
# |
| |
my %incomplete_hash = |
| |
( |
| |
TRIES_LEFT() => 1, |
| |
OPEN() => 1, |
| |
ATTEMPTED() => 1 |
| |
|
| |
); |
| |
# |
| |
# Return tru if a problem is incomplete... for now incomplete means that |
| |
# any part of the problem is incomplete. |
| |
# Note that if the resources is not a problem, 0 is returned. |
| |
# |
| |
sub is_incomplete { |
| |
my $self = shift; |
| |
if ($self->is_problem()) { |
| |
&Apache::lonnet::logthis('is problem'); |
| |
foreach my $part (@{$self->parts()}) { |
| |
&Apache::lonnet::logthis("$part status ".$self->status($part)); |
| |
if (exists($incomplete_hash{$self->status($part)})) { |
| |
return 1; |
| } |
} |
| } |
} |
| $col++; |
|
| } |
} |
| return $further; |
return 0; |
| |
|
| |
} |
| |
sub is_raw_problem { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
if ($src =~ /\.(problem|exam|quiz|assess|survey|form|library|task)$/) { |
| |
return 1; |
| |
} |
| |
return 0; |
| } |
} |
| # ------------------------------------------------------------ Build page table |
|
| |
|
| sub tracetable { |
sub contains_problem { |
| my ($sofar,$rid,$beenhere,$showtypes,$indent,$linkid)=@_; |
my $self=shift; |
| my $newshowtypes=$showtypes; |
if ($self->is_page()) { |
| my $further=$sofar; |
my $hasProblem=$self->hasResource($self,sub { $_[0]->is_problem() },1); |
| #$Apache::lonxml::debug=1; |
return $hasProblem; |
| &Apache::lonxml::debug("$rid ; $linkid ; $sofar ; $beenhere ; ".$hash{'src_'.$rid}); |
} |
| if ($beenhere=~/\&$rid\&/) { return $further; } |
return 0; |
| $beenhere.=$rid.'&'; |
} |
| |
sub map_contains_problem { |
| if (defined($hash{'is_map_'.$rid})) { |
my $self=shift; |
| $sofar++; |
if ($self->is_map()) { |
| my $tprefix=''; |
my $has_problem= |
| if ($hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}} |
$self->hasResource($self,sub { $_[0]->is_problem() },1); |
| eq 'sequence') { |
return $has_problem; |
| $tprefix='h'; |
|
| } elsif ($hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}} |
|
| eq 'page') { |
|
| $tprefix='j'; |
|
| if ($indent) { $tprefix='i'.$indent.','.$tprefix; } |
|
| if ($linkid) { $tprefix='l'.$linkid.','.$tprefix; } |
|
| $newshowtypes='problems'; |
|
| $indent++; |
|
| #if in a .page continue to link the encompising .page |
|
| if (!$linkid) { $linkid=$rid; } |
|
| } |
|
| if (defined($rows[$sofar])) { |
|
| $rows[$sofar].='&'.$tprefix.$rid; |
|
| } else { |
|
| $rows[$sofar]=$tprefix.$rid; |
|
| } |
|
| if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) && |
|
| (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) { |
|
| my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}}; |
|
| $sofar=&tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}}, |
|
| '&'.$frid.'&',$newshowtypes,$indent,$linkid); |
|
| &addresource($hash{'src_'.$frid},\$sofar,$frid,$newshowtypes, |
|
| $indent,$linkid); |
|
| if ($tprefix =~ /j$/) { $indent--; $linkid=''; } |
|
| } |
|
| } else { |
|
| &addresource($hash{'src_'.$rid},\$sofar,$rid,$showtypes, |
|
| $indent,$linkid); |
|
| } |
} |
| |
return 0; |
| |
} |
| |
sub is_sequence { |
| |
my $self=shift; |
| |
return $self->navHash("is_map_", 1) && |
| |
$self->navHash("map_type_" . $self->map_pc()) eq 'sequence'; |
| |
} |
| |
sub is_survey { |
| |
my $self = shift(); |
| |
my $part = shift(); |
| |
my $type = $self->parmval('type',$part); |
| |
if (($type eq 'survey') || ($type eq 'surveycred')) { |
| |
return 1; |
| |
} |
| |
if ($self->src() =~ /\.(survey)$/) { |
| |
return 1; |
| |
} |
| |
return 0; |
| |
} |
| |
sub is_anonsurvey { |
| |
my $self = shift(); |
| |
my $part = shift(); |
| |
my $type = $self->parmval('type',$part); |
| |
if (($type eq 'anonsurvey') || ($type eq 'anonsurveycred')) { |
| |
return 1; |
| |
} |
| |
return 0; |
| |
} |
| |
sub is_task { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return ($src =~ /\.(task)$/) |
| |
} |
| |
|
| |
sub is_empty_sequence { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return !$self->is_page() && $self->navHash("is_map_", 1) && !$self->navHash("map_type_" . $self->map_pc()); |
| |
} |
| |
|
| if (defined($hash{'to_'.$rid})) { |
# Private method: Shells out to the parmval in the nav map, handler parts. |
| $further=&followlinks($rid,$sofar,$beenhere,$further,$showtypes, |
sub parmval { |
| $indent,$linkid); |
my $self = shift; |
| |
my $what = shift; |
| |
my $part = shift; |
| |
if (!defined($part)) { |
| |
$part = '0'; |
| } |
} |
| |
return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->symb()); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<Map Methods> |
| |
|
| |
These methods are useful for getting information about the map |
| |
properties of the resource, if the resource is a map (B<is_map>). |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<map_finish>: |
| |
|
| |
Returns a reference to a resource object corresponding to the finish |
| |
resource of the map. |
| |
|
| |
=item * B<map_pc>: |
| |
|
| return $further; |
Returns the pc value of the map, which is the first number that |
| |
appears in the resource ID of the resources in the map, and is the |
| |
number that appears around the middle of the symbs of the resources in |
| |
that map. |
| |
|
| |
=item * B<map_start>: |
| |
|
| |
Returns a reference to a resource object corresponding to the start |
| |
resource of the map. |
| |
|
| |
=item * B<map_type>: |
| |
|
| |
Returns a string with the type of the map in it. |
| |
|
| |
=item *B<map_hierarchy>: |
| |
|
| |
Returns a string with a comma-separated ordered list of map_pc IDs |
| |
for the hierarchy of maps containing a map, with the top level |
| |
map first, then descending to deeper levels, with the enclosing map last. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub map_finish { |
| |
my $self = shift; |
| |
my $src = $self->src(); |
| |
$src = &Apache::lonnet::clutter($src); |
| |
my $res = $self->navHash("map_finish_$src", 0); |
| |
$res = $self->{NAV_MAP}->getById($res); |
| |
return $res; |
| |
} |
| |
sub map_pc { |
| |
my $self = shift; |
| |
my $src = $self->src(); |
| |
return $self->navHash("map_pc_$src", 0); |
| } |
} |
| |
sub map_start { |
| |
my $self = shift; |
| |
my $src = $self->src(); |
| |
$src = &Apache::lonnet::clutter($src); |
| |
my $res = $self->navHash("map_start_$src", 0); |
| |
$res = $self->{NAV_MAP}->getById($res); |
| |
return $res; |
| |
} |
| |
sub map_type { |
| |
my $self = shift; |
| |
my $pc = $self->map_pc(); |
| |
return $self->navHash("map_type_$pc", 0); |
| |
} |
| |
sub map_hierarchy { |
| |
my $self = shift; |
| |
my $pc = $self->map_pc(); |
| |
return $self->navHash("map_hierarchy_$pc", 0); |
| |
} |
| |
|
| |
|
| |
##### |
| |
# Property queries |
| |
##### |
| |
|
| |
# These functions will be responsible for returning the CORRECT |
| |
# VALUE for the parameter, no matter what. So while they may look |
| |
# like direct calls to parmval, they can be more than that. |
| |
# So, for instance, the duedate function should use the "duedatetype" |
| |
# information, rather than the resource object user. |
| |
|
| |
=pod |
| |
|
| |
=head2 Resource Parameters |
| |
|
| |
In order to use the resource parameters correctly, the nav map must |
| |
have been instantiated with genCourseAndUserOptions set to true, so |
| |
the courseopt and useropt is read correctly. Then, you can call these |
| |
functions to get the relevant parameters for the resource. Each |
| |
function defaults to part "0", but can be directed to another part by |
| |
passing the part as the parameter. |
| |
|
| # ================================================================ Main Handler |
These methods are responsible for getting the parameter correct, not |
| |
merely reflecting the contents of the GDBM hashes. As we move towards |
| |
dates relative to other dates, these methods should be updated to |
| |
reflect that. (Then, anybody using these methods will not have to update |
| |
their code.) |
| |
|
| sub handler { |
=over 4 |
| my $r=shift; |
|
| |
|
| |
=item * B<acc>: |
| |
|
| # ------------------------------------------- Set document type for header only |
Get the Client IP/Name Access Control information. |
| |
|
| if ($r->header_only) { |
=item * B<answerdate>: |
| if ($ENV{'browser.mathml'}) { |
|
| $r->content_type('text/xml'); |
Get the answer-reveal date for the problem. |
| |
|
| |
=item * B<awarded>: |
| |
|
| |
Gets the awarded value for the problem part. Requires genUserData set to |
| |
true when the navmap object was created. |
| |
|
| |
=item * B<duedate>: |
| |
|
| |
Get the due date for the problem. |
| |
|
| |
=item * B<tries>: |
| |
|
| |
Get the number of tries the student has used on the problem. |
| |
|
| |
=item * B<maxtries>: |
| |
|
| |
Get the number of max tries allowed. |
| |
|
| |
=item * B<opendate>: |
| |
|
| |
Get the open date for the problem. |
| |
|
| |
=item * B<sig>: |
| |
|
| |
Get the significant figures setting. |
| |
|
| |
=item * B<tol>: |
| |
|
| |
Get the tolerance for the problem. |
| |
|
| |
=item * B<tries>: |
| |
|
| |
Get the number of tries the user has already used on the problem. |
| |
|
| |
=item * B<type>: |
| |
|
| |
Get the question type for the problem. |
| |
|
| |
=item * B<weight>: |
| |
|
| |
Get the weight for the problem. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub acc { |
| |
(my $self, my $part) = @_; |
| |
my $acc = $self->parmval("acc", $part); |
| |
return $acc; |
| |
} |
| |
sub answerdate { |
| |
(my $self, my $part) = @_; |
| |
# Handle intervals |
| |
my $answerdatetype = $self->parmval("answerdate.type", $part); |
| |
my $answerdate = $self->parmval("answerdate", $part); |
| |
my $duedate = $self->parmval("duedate", $part); |
| |
if ($answerdatetype eq 'date_interval') { |
| |
$answerdate = $duedate + $answerdate; |
| |
} |
| |
return $answerdate; |
| |
} |
| |
sub awarded { |
| |
my $self = shift; my $part = shift; |
| |
$self->{NAV_MAP}->get_user_data(); |
| |
if (!defined($part)) { $part = '0'; } |
| |
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.awarded'}; |
| |
} |
| |
sub taskversion { |
| |
my $self = shift; my $part = shift; |
| |
$self->{NAV_MAP}->get_user_data(); |
| |
if (!defined($part)) { $part = '0'; } |
| |
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.version'}; |
| |
} |
| |
sub taskstatus { |
| |
my $self = shift; my $part = shift; |
| |
$self->{NAV_MAP}->get_user_data(); |
| |
if (!defined($part)) { $part = '0'; } |
| |
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$self->taskversion($part).'.'.$part.'.status'}; |
| |
} |
| |
sub solved { |
| |
my $self = shift; my $part = shift; |
| |
$self->{NAV_MAP}->get_user_data(); |
| |
if (!defined($part)) { $part = '0'; } |
| |
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.solved'}; |
| |
} |
| |
sub checkedin { |
| |
my $self = shift; my $part = shift; |
| |
$self->{NAV_MAP}->get_user_data(); |
| |
if (!defined($part)) { $part = '0'; } |
| |
if ($self->is_task()) { |
| |
my $version = $self->taskversion($part); |
| |
return ($self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$version .'.'.$part.'.checkedin'},$self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$version .'.'.$part.'.checkedin.slot'}); |
| |
} else { |
| |
return ($self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.checkedin'},$self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.checkedin.slot'}); |
| |
} |
| |
} |
| |
# this should work exactly like the copy in lonhomework.pm |
| |
sub duedate { |
| |
(my $self, my $part) = @_; |
| |
my $date; |
| |
my @interval=$self->parmval("interval", $part); |
| |
my $due_date=$self->parmval("duedate", $part); |
| |
if ($interval[0] =~ /\d+/) { |
| |
my $first_access=&Apache::lonnet::get_first_access($interval[1], |
| |
$self->symb); |
| |
if (defined($first_access)) { |
| |
my $interval = $first_access+$interval[0]; |
| |
$date = (!$due_date || $interval < $due_date) ? $interval |
| |
: $due_date; |
| } else { |
} else { |
| $r->content_type('text/html'); |
$date = $due_date; |
| } |
} |
| $r->send_http_header; |
} else { |
| return OK; |
$date = $due_date; |
| } |
} |
| my $requrl=$r->uri; |
return $date; |
| my $hashtied; |
} |
| # ----------------------------------------------------------------- Tie db file |
sub handgrade { |
| my $fn; |
(my $self, my $part) = @_; |
| if ($ENV{'request.course.fn'}) { |
my @response_ids = $self->responseIds($part); |
| $fn=$ENV{'request.course.fn'}; |
if (@response_ids) { |
| if (-e "$fn.db") { |
foreach my $response_id (@response_ids) { |
| if ((tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) && |
my $handgrade = $self->parmval("handgrade",$part.'_'.$response_id); |
| (tie(%parmhash,'GDBM_File', |
if (lc($handgrade) eq 'yes') { |
| $ENV{'request.course.fn'}.'_parms.db', |
return 'yes'; |
| &GDBM_READER(),0640))) { |
|
| $hashtied=1; |
|
| } |
} |
| } |
} |
| } |
} |
| if (!$hashtied) { |
my $handgrade = $self->parmval("handgrade", $part); |
| $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized"; |
return $handgrade; |
| return HTTP_NOT_ACCEPTABLE; |
} |
| |
sub maxtries { |
| |
(my $self, my $part) = @_; |
| |
my $maxtries = $self->parmval("maxtries", $part); |
| |
return $maxtries; |
| |
} |
| |
sub opendate { |
| |
(my $self, my $part) = @_; |
| |
my $opendatetype = $self->parmval("opendate.type", $part); |
| |
my $opendate = $self->parmval("opendate", $part); |
| |
if ($opendatetype eq 'date_interval') { |
| |
my $duedate = $self->duedate($part); |
| |
$opendate = $duedate - $opendate; |
| |
} |
| |
return $opendate; |
| |
} |
| |
sub problemstatus { |
| |
(my $self, my $part) = @_; |
| |
my $problemstatus = $self->parmval("problemstatus", $part); |
| |
return lc($problemstatus); |
| |
} |
| |
sub sig { |
| |
(my $self, my $part) = @_; |
| |
my $sig = $self->parmval("sig", $part); |
| |
return $sig; |
| |
} |
| |
sub tol { |
| |
(my $self, my $part) = @_; |
| |
my $tol = $self->parmval("tol", $part); |
| |
return $tol; |
| |
} |
| |
sub tries { |
| |
my $self = shift; |
| |
my $tries = $self->queryRestoreHash('tries', shift); |
| |
if (!defined($tries)) { return '0';} |
| |
return $tries; |
| |
} |
| |
sub type { |
| |
(my $self, my $part) = @_; |
| |
my $type = $self->parmval("type", $part); |
| |
return $type; |
| |
} |
| |
sub weight { |
| |
my $self = shift; my $part = shift; |
| |
if (!defined($part)) { $part = '0'; } |
| |
my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight', |
| |
$self->symb(), $env{'user.domain'}, |
| |
$env{'user.name'}, |
| |
$env{'request.course.sec'}); |
| |
return $weight; |
| |
} |
| |
sub part_display { |
| |
my $self= shift(); my $partID = shift(); |
| |
if (! defined($partID)) { $partID = '0'; } |
| |
my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display', |
| |
$self->symb); |
| |
if (! defined($display) || $display eq '') { |
| |
$display = $partID; |
| |
} |
| |
return $display; |
| |
} |
| |
sub slot_control { |
| |
my $self=shift(); my $part = shift(); |
| |
if (!defined($part)) { $part = '0'; } |
| |
my $useslots = $self->parmval("useslots", $part); |
| |
my $availablestudent = $self->parmval("availablestudent", $part); |
| |
my $available = $self->parmval("available", $part); |
| |
return ($useslots,$availablestudent,$available); |
| |
} |
| |
|
| |
# Multiple things need this |
| |
sub getReturnHash { |
| |
my $self = shift; |
| |
|
| |
if (!defined($self->{RETURN_HASH})) { |
| |
my %tmpHash = &Apache::lonnet::restore($self->symb()); |
| |
$self->{RETURN_HASH} = \%tmpHash; |
| } |
} |
| |
} |
| |
|
| # ------------------------------------------------------------------- Hash tied |
###### |
| |
# Status queries |
| |
###### |
| |
|
| if ($ENV{'browser.mathml'}) { |
# These methods query the status of problems. |
| $r->content_type('text/xml'); |
|
| } else { |
# If we need to count parts, this function determines the number of |
| $r->content_type('text/html'); |
# parts from the metadata. When called, it returns a reference to a list |
| |
# of strings corresponding to the parts. (Thus, using it in a scalar context |
| |
# tells you how many parts you have in the problem: |
| |
# $partcount = scalar($resource->countParts()); |
| |
# Don't use $self->{PARTS} directly because you don't know if it's been |
| |
# computed yet. |
| |
|
| |
=pod |
| |
|
| |
=head2 Resource misc |
| |
|
| |
Misc. functions for the resource. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<hasDiscussion>: |
| |
|
| |
Returns a false value if there has been discussion since the user last |
| |
logged in, true if there has. Always returns false if the discussion |
| |
data was not extracted when the nav map was constructed. |
| |
|
| |
=item * B<last_post_time>: |
| |
|
| |
Returns a false value if there hasn't been discussion otherwise returns |
| |
unix timestamp of last time a discussion posting (or edit) was made. |
| |
|
| |
=item * B<discussion_info>: |
| |
|
| |
optional argument is a filter (currently can be 'unread'); |
| |
returns in scalar context the count of the number of discussion postings. |
| |
|
| |
returns in list context both the count of postings and a hash ref |
| |
containing information about the postings (subject, id, timestamp) in a hash. |
| |
|
| |
Default is to return counts for all postings. However if called with a second argument set to 'unread', will return information about only unread postings. |
| |
|
| |
=item * B<getFeedback>: |
| |
|
| |
Gets the feedback for the resource and returns the raw feedback string |
| |
for the resource, or the null string if there is no feedback or the |
| |
email data was not extracted when the nav map was constructed. Usually |
| |
used like this: |
| |
|
| |
for my $url (split(/\,/, $res->getFeedback())) { |
| |
my $link = &escape($url); |
| |
... |
| |
|
| |
and use the link as appropriate. |
| |
|
| |
=cut |
| |
|
| |
sub hasDiscussion { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->hasDiscussion($self->symb()); |
| |
} |
| |
|
| |
sub last_post_time { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->last_post_time($self->symb()); |
| |
} |
| |
|
| |
sub discussion_info { |
| |
my ($self,$filter) = @_; |
| |
return $self->{NAV_MAP}->discussion_info($self->symb(),$filter); |
| |
} |
| |
|
| |
sub getFeedback { |
| |
my $self = shift; |
| |
my $source = $self->src(); |
| |
my $symb = $self->symb(); |
| |
if ($source =~ /^\/res\//) { $source = substr $source, 5; } |
| |
return $self->{NAV_MAP}->getFeedback($symb,$source); |
| |
} |
| |
|
| |
sub getErrors { |
| |
my $self = shift; |
| |
my $source = $self->src(); |
| |
my $symb = $self->symb(); |
| |
if ($source =~ /^\/res\//) { $source = substr $source, 5; } |
| |
return $self->{NAV_MAP}->getErrors($symb,$source); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<parts>(): |
| |
|
| |
Returns a list reference containing sorted strings corresponding to |
| |
each part of the problem. Single part problems have only a part '0'. |
| |
Multipart problems do not return their part '0', since they typically |
| |
do not really matter. |
| |
|
| |
=item * B<countParts>(): |
| |
|
| |
Returns the number of parts of the problem a student can answer. Thus, |
| |
for single part problems, returns 1. For multipart, it returns the |
| |
number of parts in the problem, not including psuedo-part 0. |
| |
|
| |
=item * B<countResponses>(): |
| |
|
| |
Returns the total number of responses in the problem a student can answer. |
| |
|
| |
=item * B<responseTypes>(): |
| |
|
| |
Returns a hash whose keys are the response types. The values are the number |
| |
of times each response type is used. This is for the I<entire> problem, not |
| |
just a single part. |
| |
|
| |
=item * B<multipart>(): |
| |
|
| |
Returns true if the problem is multipart, false otherwise. Use this instead |
| |
of countParts if all you want is multipart/not multipart. |
| |
|
| |
=item * B<responseType>($part): |
| |
|
| |
Returns the response type of the part, without the word "response" on the |
| |
end. Example return values: 'string', 'essay', 'numeric', etc. |
| |
|
| |
=item * B<responseIds>($part): |
| |
|
| |
Retreives the response IDs for the given part as an array reference containing |
| |
strings naming the response IDs. This may be empty. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub parts { |
| |
my $self = shift; |
| |
|
| |
if ($self->ext) { return []; } |
| |
|
| |
$self->extractParts(); |
| |
return $self->{PARTS}; |
| |
} |
| |
|
| |
sub countParts { |
| |
my $self = shift; |
| |
|
| |
my $parts = $self->parts(); |
| |
|
| |
# If I left this here, then it's not necessary. |
| |
#my $delta = 0; |
| |
#for my $part (@$parts) { |
| |
# if ($part eq '0') { $delta--; } |
| |
#} |
| |
|
| |
if ($self->{RESOURCE_ERROR}) { |
| |
return 0; |
| } |
} |
| &Apache::loncommon::no_cache($r); |
|
| $r->send_http_header; |
|
| |
|
| my $firstres=$hash{'map_start_'. |
return scalar(@{$parts}); # + $delta; |
| &Apache::lonnet::clutter($ENV{'request.course.uri'})}; |
} |
| my $lastres=$hash{'map_finish_'. |
|
| &Apache::lonnet::clutter($ENV{'request.course.uri'})}; |
|
| if (!(($firstres) && ($lastres))) { |
|
| $r->print('<html><body>Coursemap undefined.</body></html>'); |
|
| } else { |
|
| |
|
| # ----------------------------------------------------------------- Render page |
sub countResponses { |
| # -------------------------------------------------------------- Set parameters |
my $self = shift; |
| |
my $count; |
| |
foreach my $part (@{$self->parts()}) { |
| |
$count+= scalar($self->responseIds($part)); |
| |
} |
| |
return $count; |
| |
} |
| |
|
| |
sub responseTypes { |
| |
my $self = shift; |
| |
my %responses; |
| |
foreach my $part (@{$self->parts()}) { |
| |
foreach my $responsetype ($self->responseType($part)) { |
| |
$responses{$responsetype}++ if (defined($responsetype)); |
| |
} |
| |
} |
| |
return %responses; |
| |
} |
| |
|
| # ---------------------------- initialize coursedata and userdata for this user |
sub multipart { |
| undef %courseopt; |
my $self = shift; |
| undef %useropt; |
return $self->countParts() > 1; |
| |
} |
| |
|
| my $uname=$ENV{'user.name'}; |
sub singlepart { |
| my $udom=$ENV{'user.domain'}; |
my $self = shift; |
| my $uhome=$ENV{'user.home'}; |
return $self->countParts() == 1; |
| my $cid=$ENV{'request.course.id'}; |
} |
| my $chome=$ENV{'course.'.$cid.'.home'}; |
|
| my ($cdom,$cnum)=split(/\_/,$cid); |
sub responseType { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
|
| |
$self->extractParts(); |
| |
if (defined($self->{RESPONSE_TYPES}->{$part})) { |
| |
return @{$self->{RESPONSE_TYPES}->{$part}}; |
| |
} else { |
| |
return undef; |
| |
} |
| |
} |
| |
|
| my $userprefix=$uname.'_'.$udom.'_'; |
sub responseIds { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
|
| |
$self->extractParts(); |
| |
if (defined($self->{RESPONSE_IDS}->{$part})) { |
| |
return @{$self->{RESPONSE_IDS}->{$part}}; |
| |
} else { |
| |
return undef; |
| |
} |
| |
} |
| |
|
| unless ($uhome eq 'no_host') { |
# Private function: Extracts the parts information, both part names and |
| # -------------------------------------------------------------- Get coursedata |
# part types, and saves it. |
| unless ((time-$courserdatas{$cid.'.last_cache'})<240) { |
sub extractParts { |
| my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum. |
my $self = shift; |
| ':resourcedata',$chome); |
|
| if ($reply!~/^error\:/) { |
return if (defined($self->{PARTS})); |
| $courserdatas{$cid}=$reply; |
return if ($self->ext); |
| $courserdatas{$cid.'.last_cache'}=time; |
|
| |
$self->{PARTS} = []; |
| |
|
| |
my %parts; |
| |
|
| |
# Retrieve part count, if this is a problem |
| |
if ($self->is_problem()) { |
| |
my $partorder = &Apache::lonnet::metadata($self->src(), 'partorder'); |
| |
my $metadata = &Apache::lonnet::metadata($self->src(), 'packages'); |
| |
|
| |
if ($partorder) { |
| |
my @parts; |
| |
for my $part (split (/,/,$partorder)) { |
| |
if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) { |
| |
push @parts, $part; |
| |
$parts{$part} = 1; |
| } |
} |
| } |
} |
| foreach (split(/\&/,$courserdatas{$cid})) { |
$self->{PARTS} = \@parts; |
| my ($name,$value)=split(/\=/,$_); |
} else { |
| $courseopt{$userprefix.&Apache::lonnet::unescape($name)}= |
if (!$metadata) { |
| &Apache::lonnet::unescape($value); |
$self->{RESOURCE_ERROR} = 1; |
| |
$self->{PARTS} = []; |
| |
$self->{PART_TYPE} = {}; |
| |
return; |
| } |
} |
| # --------------------------------------------------- Get userdata (if present) |
foreach my $entry (split(/\,/,$metadata)) { |
| unless ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) { |
if ($entry =~ /^(?:part|Task)_(.*)$/) { |
| my $reply=&Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome); |
my $part = $1; |
| if ($reply!~/^error\:/) { |
# This floods the logs if it blows up |
| $userrdatas{$uname.'___'.$udom}=$reply; |
if (defined($parts{$part})) { |
| $userrdatas{$uname.'___'.$udom.'.last_cache'}=time; |
&Apache::lonnet::logthis("$part multiply defined in metadata for " . $self->symb()); |
| |
} |
| |
|
| |
# check to see if part is turned off. |
| |
|
| |
if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) { |
| |
$parts{$part} = 1; |
| |
} |
| } |
} |
| } |
} |
| foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) { |
my @sortedParts = sort keys %parts; |
| my ($name,$value)=split(/\=/,$_); |
$self->{PARTS} = \@sortedParts; |
| $useropt{$userprefix.&Apache::lonnet::unescape($name)}= |
} |
| &Apache::lonnet::unescape($value); |
|
| } |
|
| } |
|
| |
|
| @rows=(); |
# These hashes probably do not need names that end with "Hash".... |
| |
my %responseIdHash; |
| |
my %responseTypeHash; |
| |
|
| &tracetable(0,$firstres,'&'.$lastres.'&','',0); |
|
| if ($hash{'src_'.$lastres}) { |
# Init the responseIdHash |
| my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$lastres}); |
foreach my $part (@{$self->{PARTS}}) { |
| if (($brepriv eq '2') || ($brepriv eq 'F')) { |
$responseIdHash{$part} = []; |
| $rows[$#rows+1]=''.$lastres; |
} |
| |
|
| |
# Now, the unfortunate thing about this is that parts, part name, and |
| |
# response id are delimited by underscores, but both the part |
| |
# name and response id can themselves have underscores in them. |
| |
# So we have to use our knowlege of part names to figure out |
| |
# where the part names begin and end, and even then, it is possible |
| |
# to construct ambiguous situations. |
| |
foreach my $data (split /,/, $metadata) { |
| |
if ($data =~ /^([a-zA-Z]+)response_(.*)/ |
| |
|| $data =~ /^(Task)_(.*)/) { |
| |
my $responseType = $1; |
| |
my $partStuff = $2; |
| |
my $partIdSoFar = ''; |
| |
my @partChunks = split /_/, $partStuff; |
| |
my $i = 0; |
| |
for ($i = 0; $i < scalar(@partChunks); $i++) { |
| |
if ($partIdSoFar) { $partIdSoFar .= '_'; } |
| |
$partIdSoFar .= $partChunks[$i]; |
| |
if ($parts{$partIdSoFar}) { |
| |
my @otherChunks = @partChunks[$i+1..$#partChunks]; |
| |
my $responseId = join('_', @otherChunks); |
| |
if ($self->is_task()) { |
| |
push(@{$responseIdHash{$partIdSoFar}}, |
| |
$partIdSoFar); |
| |
} else { |
| |
push(@{$responseIdHash{$partIdSoFar}}, |
| |
$responseId); |
| |
} |
| |
push(@{$responseTypeHash{$partIdSoFar}}, |
| |
$responseType); |
| |
} |
| |
} |
| |
} |
| |
} |
| |
my $resorder = &Apache::lonnet::metadata($self->src(),'responseorder'); |
| |
# |
| |
# Reorder the arrays in the %responseIdHash and %responseTypeHash |
| |
if ($resorder) { |
| |
my @resorder=split(/,/,$resorder); |
| |
foreach my $part (keys(%responseIdHash)) { |
| |
my $i=0; |
| |
my %resids = map { ($_,$i++) } @{ $responseIdHash{$part} }; |
| |
my @neworder; |
| |
foreach my $possibleid (@resorder) { |
| |
if (exists($resids{$possibleid})) { |
| |
push(@neworder,$resids{$possibleid}); |
| |
} |
| |
} |
| |
my @ids; |
| |
my @type; |
| |
foreach my $element (@neworder) { |
| |
push (@ids,$responseIdHash{$part}->[$element]); |
| |
push (@type,$responseTypeHash{$part}->[$element]); |
| |
} |
| |
$responseIdHash{$part}=\@ids; |
| |
$responseTypeHash{$part}=\@type; |
| } |
} |
| } |
} |
| |
$self->{RESPONSE_IDS} = \%responseIdHash; |
| |
$self->{RESPONSE_TYPES} = \%responseTypeHash; |
| |
} |
| |
|
| |
return; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=head2 Resource Status |
| |
|
| |
Problem resources have status information, reflecting their various |
| |
dates and completion statuses. |
| |
|
| |
There are two aspects to the status: the date-related information and |
| |
the completion information. |
| |
|
| |
Idiomatic usage of these two methods would probably look something |
| |
like |
| |
|
| |
foreach my $part ($resource->parts()) { |
| |
my $dateStatus = $resource->getDateStatus($part); |
| |
my $completionStatus = $resource->getCompletionStatus($part); |
| |
|
| |
or |
| |
|
| |
my $status = $resource->status($part); |
| |
|
| |
... use it here ... |
| |
} |
| |
|
| |
Which you use depends on exactly what you are looking for. The |
| |
status() function has been optimized for the nav maps display and may |
| |
not precisely match what you need elsewhere. |
| |
|
| |
The symbolic constants shown below can be accessed through the |
| |
resource object: C<$res->OPEN>. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getDateStatus>($part): |
| |
|
| |
($part defaults to 0). A convenience function that returns a symbolic |
| |
constant telling you about the date status of the part. The possible |
| |
return values are: |
| |
|
| |
=back |
| |
|
| |
B<Date Codes> |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<OPEN_LATER>: |
| |
|
| |
The problem will be opened later. |
| |
|
| |
=item * B<OPEN>: |
| |
|
| |
Open and not yet due. |
| |
|
| |
|
| |
=item * B<PAST_DUE_ANSWER_LATER>: |
| |
|
| |
The due date has passed, but the answer date has not yet arrived. |
| |
|
| |
=item * B<PAST_DUE_NO_ANSWER>: |
| |
|
| |
The due date has passed and there is no answer opening date set. |
| |
|
| |
=item * B<ANSWER_OPEN>: |
| |
|
| |
The answer date is here. |
| |
|
| |
=item * B<NETWORK_FAILURE>: |
| |
|
| |
The information is unknown due to network failure. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
# Apparently the compiler optimizes these into constants automatically |
| |
sub OPEN_LATER { return 0; } |
| |
sub OPEN { return 1; } |
| |
sub PAST_DUE_NO_ANSWER { return 2; } |
| |
sub PAST_DUE_ANSWER_LATER { return 3; } |
| |
sub ANSWER_OPEN { return 4; } |
| |
sub NOTHING_SET { return 5; } |
| |
sub NETWORK_FAILURE { return 100; } |
| |
|
| |
# getDateStatus gets the date status for a given problem part. |
| |
# Because answer date, due date, and open date are fully independent |
| |
# (i.e., it is perfectly possible to *only* have an answer date), |
| |
# we have to completely cover the 3x3 maxtrix of (answer, due, open) x |
| |
# (past, future, none given). This function handles this with a decision |
| |
# tree. Read the comments to follow the decision tree. |
| |
|
| |
sub getDateStatus { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
$part = "0" if (!defined($part)); |
| |
|
| |
# Always return network failure if there was one. |
| |
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE}); |
| |
|
| |
my $now = time(); |
| |
|
| |
my $open = $self->opendate($part); |
| |
my $due = $self->duedate($part); |
| |
my $answer = $self->answerdate($part); |
| |
|
| |
if (!$open && !$due && !$answer) { |
| |
# no data on the problem at all |
| |
# should this be the same as "open later"? think multipart. |
| |
return $self->NOTHING_SET; |
| |
} |
| |
if (!$open || $now < $open) {return $self->OPEN_LATER} |
| |
if (!$due || $now < $due) {return $self->OPEN} |
| |
if ($answer && $now < $answer) {return $self->PAST_DUE_ANSWER_LATER} |
| |
if ($answer) { return $self->ANSWER_OPEN; } |
| |
return PAST_DUE_NO_ANSWER; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<> |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getCompletionStatus>($part): |
| |
|
| |
($part defaults to 0.) A convenience function that returns a symbolic |
| |
constant telling you about the completion status of the part, with the |
| |
following possible results: |
| |
|
| |
=back |
| |
|
| |
B<Completion Codes> |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<NOT_ATTEMPTED>: |
| |
|
| |
Has not been attempted at all. |
| |
|
| |
=item * B<INCORRECT>: |
| |
|
| |
Attempted, but wrong by student. |
| |
|
| |
=item * B<INCORRECT_BY_OVERRIDE>: |
| |
|
| |
Attempted, but wrong by instructor override. |
| |
|
| # ------------------------------------------------------------------ Page parms |
=item * B<CORRECT>: |
| |
|
| my $j; |
Correct or correct by instructor. |
| my $i; |
|
| my $lcm=1; |
|
| my $contents=0; |
|
| |
|
| # ---------------------------------------------- Go through table to get layout |
=item * B<CORRECT_BY_OVERRIDE>: |
| |
|
| for ($i=0;$i<=$#rows;$i++) { |
Correct by instructor override. |
| if ($rows[$i]) { |
|
| &Apache::lonxml::debug("Row $i is:".$rows[$i]); |
=item * B<EXCUSED>: |
| $contents++; |
|
| my @colcont=split(/\&/,$rows[$i]); |
Excused. Not yet implemented. |
| $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1)); |
|
| } |
=item * B<NETWORK_FAILURE>: |
| |
|
| |
Information not available due to network failure. |
| |
|
| |
=item * B<ATTEMPTED>: |
| |
|
| |
Attempted, and not yet graded. |
| |
|
| |
=item * B<CREDIT_ATTEMPTED>: |
| |
|
| |
Attempted, and credit received for attempt (survey and anonymous survey only). |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub NOT_ATTEMPTED { return 10; } |
| |
sub INCORRECT { return 11; } |
| |
sub INCORRECT_BY_OVERRIDE { return 12; } |
| |
sub CORRECT { return 13; } |
| |
sub CORRECT_BY_OVERRIDE { return 14; } |
| |
sub EXCUSED { return 15; } |
| |
sub ATTEMPTED { return 16; } |
| |
sub CREDIT_ATTEMPTED { return 17; } |
| |
|
| |
sub getCompletionStatus { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE}); |
| |
|
| |
my $status = $self->queryRestoreHash('solved', $part); |
| |
|
| |
# Left as separate if statements in case we ever do more with this |
| |
if ($status eq 'correct_by_student') {return $self->CORRECT;} |
| |
if ($status eq 'correct_by_scantron') {return $self->CORRECT;} |
| |
if ($status eq 'correct_by_override') { |
| |
return $self->CORRECT_BY_OVERRIDE; |
| |
} |
| |
if ($status eq 'incorrect_attempted') {return $self->INCORRECT; } |
| |
if ($status eq 'incorrect_by_override') {return $self->INCORRECT_BY_OVERRIDE; } |
| |
if ($status eq 'excused') {return $self->EXCUSED; } |
| |
if ($status eq 'ungraded_attempted') {return $self->ATTEMPTED; } |
| |
if ($status eq 'credit_attempted') { |
| |
if ($self->is_anonsurvey($part) || $self->is_survey($part)) { |
| |
return $self->CREDIT_ATTEMPTED; |
| |
} else { |
| |
return $self->ATTEMPTED; |
| |
} |
| |
} |
| |
return $self->NOT_ATTEMPTED; |
| |
} |
| |
|
| |
sub queryRestoreHash { |
| |
my $self = shift; |
| |
my $hashentry = shift; |
| |
my $part = shift; |
| |
$part = "0" if (!defined($part) || $part eq ''); |
| |
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE}); |
| |
|
| |
$self->getReturnHash(); |
| |
|
| |
return $self->{RETURN_HASH}->{'resource.'.$part.'.'.$hashentry}; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<Composite Status> |
| |
|
| |
Along with directly returning the date or completion status, the |
| |
resource object includes a convenience function B<status>() that will |
| |
combine the two status tidbits into one composite status that can |
| |
represent the status of the resource as a whole. This method represents |
| |
the concept of the thing we want to display to the user on the nav maps |
| |
screen, which is a combination of completion and open status. The precise logic is |
| |
documented in the comments of the status method. The following results |
| |
may be returned, all available as methods on the resource object |
| |
($res->NETWORK_FAILURE): In addition to the return values that match |
| |
the date or completion status, this function can return "ANSWER_SUBMITTED" |
| |
if that problemstatus parameter value is set to No, suppressing the |
| |
incorrect/correct feedback. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<NETWORK_FAILURE>: |
| |
|
| |
The network has failed and the information is not available. |
| |
|
| |
=item * B<NOTHING_SET>: |
| |
|
| |
No dates have been set for this problem (part) at all. (Because only |
| |
certain parts of a multi-part problem may be assigned, this can not be |
| |
collapsed into "open later", as we do not know a given part will EVER |
| |
be opened. For single part, this is the same as "OPEN_LATER".) |
| |
|
| |
=item * B<CORRECT>: |
| |
|
| |
For any reason at all, the part is considered correct. |
| |
|
| |
=item * B<EXCUSED>: |
| |
|
| |
For any reason at all, the problem is excused. |
| |
|
| |
=item * B<PAST_DUE_NO_ANSWER>: |
| |
|
| |
The problem is past due, not considered correct, and no answer date is |
| |
set. |
| |
|
| |
=item * B<PAST_DUE_ANSWER_LATER>: |
| |
|
| |
The problem is past due, not considered correct, and an answer date in |
| |
the future is set. |
| |
|
| |
=item * B<ANSWER_OPEN>: |
| |
|
| |
The problem is past due, not correct, and the answer is now available. |
| |
|
| |
=item * B<OPEN_LATER>: |
| |
|
| |
The problem is not yet open. |
| |
|
| |
=item * B<TRIES_LEFT>: |
| |
|
| |
The problem is open, has been tried, is not correct, but there are |
| |
tries left. |
| |
|
| |
=item * B<INCORRECT>: |
| |
|
| |
The problem is open, and all tries have been used without getting the |
| |
correct answer. |
| |
|
| |
=item * B<OPEN>: |
| |
|
| |
The item is open and not yet tried. |
| |
|
| |
=item * B<ATTEMPTED>: |
| |
|
| |
The problem has been attempted. |
| |
|
| |
=item * B<CREDIT_ATTEMPTED>: |
| |
|
| |
The problem has been attempted, and credit given for the attempt (survey and anonymous survey only). |
| |
|
| |
=item * B<ANSWER_SUBMITTED>: |
| |
|
| |
An answer has been submitted, but the student should not see it. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub TRIES_LEFT { return 20; } |
| |
sub ANSWER_SUBMITTED { return 21; } |
| |
sub PARTIALLY_CORRECT { return 22; } |
| |
|
| |
sub RESERVED_LATER { return 30; } |
| |
sub RESERVED { return 31; } |
| |
sub RESERVED_LOCATION { return 32; } |
| |
sub RESERVABLE { return 33; } |
| |
sub RESERVABLE_LATER { return 34; } |
| |
sub NOTRESERVABLE { return 35; } |
| |
sub NOT_IN_A_SLOT { return 36; } |
| |
sub NEEDS_CHECKIN { return 37; } |
| |
sub WAITING_FOR_GRADE { return 38; } |
| |
sub UNKNOWN { return 39; } |
| |
|
| |
sub status { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
if (!defined($part)) { $part = "0"; } |
| |
my $completionStatus = $self->getCompletionStatus($part); |
| |
my $dateStatus = $self->getDateStatus($part); |
| |
|
| |
# What we have is a two-dimensional matrix with 4 entries on one |
| |
# dimension and 5 entries on the other, which we want to colorize, |
| |
# plus network failure and "no date data at all". |
| |
|
| |
#if ($self->{RESOURCE_ERROR}) { return NETWORK_FAILURE; } |
| |
if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; } |
| |
|
| |
my $suppressFeedback = 0; |
| |
if (($self->problemstatus($part) eq 'no') || |
| |
($self->problemstatus($part) eq 'no_feedback_ever')) { |
| |
$suppressFeedback = 1; |
| |
} |
| |
# If there's an answer date and we're past it, don't |
| |
# suppress the feedback; student should know |
| |
if ($self->duedate($part) && $self->duedate($part) < time() && |
| |
$self->answerdate($part) && $self->answerdate($part) < time()) { |
| |
$suppressFeedback = 0; |
| |
} |
| |
|
| |
# There are a few whole rows we can dispose of: |
| |
if ($completionStatus == CORRECT || |
| |
$completionStatus == CORRECT_BY_OVERRIDE ) { |
| |
if ( $suppressFeedback ) { return ANSWER_SUBMITTED } |
| |
my $awarded=$self->awarded($part); |
| |
if ($awarded < 1 && $awarded > 0) { |
| |
return PARTIALLY_CORRECT; |
| |
} elsif ($awarded<1) { |
| |
return INCORRECT; |
| } |
} |
| |
return CORRECT; |
| |
} |
| |
|
| |
# If it's WRONG... and not open |
| |
if ( ($completionStatus == INCORRECT || |
| |
$completionStatus == INCORRECT_BY_OVERRIDE) |
| |
&& (!$self->opendate($part) || $self->opendate($part) > time()) ) { |
| |
return INCORRECT; |
| |
} |
| |
|
| unless ($contents) { |
if ($completionStatus == ATTEMPTED) { |
| $r->print('<html><body>Empty Map.</body></html>'); |
return ATTEMPTED; |
| } else { |
} |
| |
|
| # ------------------------------------------------------------------ Build page |
if ($completionStatus == CREDIT_ATTEMPTED) { |
| |
return CREDIT_ATTEMPTED; |
| |
} |
| |
|
| my $currenturl=$ENV{'form.postdata'}; |
# If it's EXCUSED, then return that no matter what |
| $currenturl=~s/^http\:\/\///; |
if ($completionStatus == EXCUSED) { |
| $currenturl=~s/^[^\/]+//; |
return EXCUSED; |
| |
} |
| # ---------------------------------------------------------------- Send headers |
|
| |
if ($dateStatus == NOTHING_SET) { |
| my $date=localtime; |
return NOTHING_SET; |
| my $now=time; |
} |
| # ----------------------------------------- Get email status and discussiontime |
|
| |
# Now we're down to a 4 (incorrect, incorrect_override, not_attempted) |
| my %emailstatus=&Apache::lonnet::dump('email_status'); |
# by 4 matrix (date statuses). |
| my $logouttime=$emailstatus{'logout'}; |
|
| my $courseleave=$emailstatus{'logout_'.$ENV{'request.course.id'}}; |
if ($dateStatus == PAST_DUE_ANSWER_LATER || |
| my $lastcheck=($courseleave>$logouttime?$courseleave:$logouttime); |
$dateStatus == PAST_DUE_NO_ANSWER ) { |
| |
return $suppressFeedback ? ANSWER_SUBMITTED : $dateStatus; |
| my %discussiontimes=&Apache::lonnet::dump('discussiontimes', |
} |
| $cdom,$cnum); |
|
| |
if ($dateStatus == ANSWER_OPEN) { |
| my %feedback=(); |
return ANSWER_OPEN; |
| my %error=(); |
} |
| foreach my $msgid (split(/\&/,&Apache::lonnet::reply('keys:'. |
|
| $ENV{'user.domain'}.':'. |
# Now: (incorrect, incorrect_override, not_attempted) x |
| $ENV{'user.name'}.':nohist_email', |
# (open_later), (open) |
| $ENV{'user.home'}))) { |
|
| $msgid=&Apache::lonnet::unescape($msgid); |
if ($dateStatus == OPEN_LATER) { |
| my $plain=&Apache::lonnet::unescape(&Apache::lonnet::unescape($msgid)); |
return OPEN_LATER; |
| if ($plain=~/(Error|Feedback) \[([^\]]+)\]/) { |
} |
| my ($what,$url)=($1,$2); |
|
| my %status= |
# If it's WRONG... |
| &Apache::lonnet::get('email_status',[$msgid]); |
if ($completionStatus == INCORRECT || $completionStatus == INCORRECT_BY_OVERRIDE) { |
| if ($status{$msgid}=~/^error\:/) { |
# and there are TRIES LEFT: |
| $status{$msgid}=''; |
if ($self->tries($part) < $self->maxtries($part) || !$self->maxtries($part)) { |
| } |
return $suppressFeedback ? ANSWER_SUBMITTED : TRIES_LEFT; |
| |
} |
| if (($status{$msgid} eq 'new') || |
return $suppressFeedback ? ANSWER_SUBMITTED : INCORRECT; # otherwise, return orange; student can't fix this |
| (!$status{$msgid})) { |
} |
| if ($what eq 'Error') { |
|
| $error{$url}.=','.$msgid; |
# Otherwise, it's untried and open |
| } else { |
return OPEN; |
| $feedback{$url}.=','.$msgid; |
} |
| } |
|
| } |
sub check_for_slot { |
| } |
my $self = shift; |
| } |
my $part = shift; |
| # ----------------------------------------------------------- Start Page Output |
my ($use_slots,$available,$availablestudent) = $self->slot_control($part); |
| my $bodytagadd=''; |
if (($use_slots ne '') && ($use_slots !~ /^\s*no\s*$/i)) { |
| $r->print( |
my @slots = (split(/:/,$availablestudent),split(/:/,$available)); |
| '<html><head><title>Navigate Course Map</title></head>'); |
my $cid=$env{'request.course.id'}; |
| if (($currenturl=~/^\/res/) && |
my $cdom=$env{'course.'.$cid.'.domain'}; |
| ($currenturl!~/^\/res\/adm/)) { |
my $cnum=$env{'course.'.$cid.'.num'}; |
| $bodytagadd='onLoad="window.location.hash='."'curloc'".'"'; |
my $now = time; |
| } |
if (@slots > 0) { |
| $r->print(&Apache::loncommon::bodytag('Navigate Course Map','', |
my %slots=&Apache::lonnet::get('slots',[@slots],$cdom,$cnum); |
| $bodytagadd)); |
if (&Apache::lonnet::error(%slots)) { |
| $r->print('<script>window.focus();</script>'); |
return (UNKNOWN); |
| my $desc=$ENV{'course.'.$ENV{'request.course.id'}.'.description'}; |
} |
| if (defined($desc)) { $r->print("<h2>$desc</h2>\n"); } |
my @sorted_slots = &Apache::loncommon::sorted_slots(\@slots,\%slots); |
| $r->print("<h3>$date</h3>\n"); |
my ($checkedin,$checkedinslot); |
| $r->rflush(); |
foreach my $slot_name (@sorted_slots) { |
| $r->print('<img src="/adm/lonMisc/chat.gif"> New discussion since '. |
next if (!defined($slots{$slot_name}) || |
| localtime($lastcheck). |
!ref($slots{$slot_name})); |
| '<br><img src="/adm/lonMisc/feedback.gif"> New message (click to open)<p>'); |
my $end = $slots{$slot_name}->{'endtime'}; |
| if (($currenturl=~/^\/res/) && |
my $start = $slots{$slot_name}->{'starttime'}; |
| ($currenturl!~/^\/res\/adm/)) { |
my $ip = $slots{$slot_name}->{'ip'}; |
| $r->print('<a href="#curloc">Current Location</a><p>'); |
if ($self->simpleStatus() == OPEN) { |
| } |
my $startreserve = $slots{$slot_name}->{'startreserve'}; |
| # ----------------------------------------------------- The little content list |
my @proctors; |
| for ($i=0;$i<=$#rows;$i++) { |
if ($slots{$slot_name}->{'proctor'} ne '') { |
| if ($rows[$i]) { |
@proctors = split(',',$slots{$slot_name}->{'proctor'}); |
| my @colcont=split(/\&/,$rows[$i]); |
} |
| my $avespan=$lcm/($#colcont+1); |
if ($end > $now) { |
| for ($j=0;$j<=$#colcont;$j++) { |
($checkedin,$checkedinslot) = $self->checkedin(); |
| my $rid=$colcont[$j]; |
if ($startreserve < $now) { |
| if ($rid=~/^h(.+)/) { |
if ($start > $now) { |
| $rid=$1; |
return (RESERVED_LATER,$start,$slot_name); |
| $r->print(' <a href="#'. |
} else { |
| $rid.'">'.$hash{'title_'.$rid}. |
if ($ip ne '') { |
| '</a><br>'); |
if (!&Apache::loncommon::check_ip_acc($ip)) { |
| } |
return (RESERVED_LOCATION,$ip,$slot_name); |
| } |
} |
| } |
} |
| } |
if (@proctors > 0) { |
| # ----------------------------------------------------------------- Start table |
unless ((grep(/^\Q$checkedin\E/,@proctors)) && |
| $r->print('<hr><table cols="'.$lcm.'" border="0">'); |
($checkedinslot eq $slot_name)) { |
| for ($i=0;$i<=$#rows;$i++) { |
return (NEEDS_CHECKIN,undef,$slot_name); |
| if ($rows[$i]) { |
} |
| $r->print("\n<tr>"); |
} |
| my @colcont=split(/\&/,$rows[$i]); |
return (RESERVED,$end,$slot_name); |
| my $avespan=$lcm/($#colcont+1); |
} |
| for ($j=0;$j<=$#colcont;$j++) { |
} else { |
| my $indent;my $indentstr; |
if ($start > $now) { |
| my $linkid; |
return (RESERVABLE,$startreserve,$slot_name); |
| my $rid=$colcont[$j]; |
|
| $rid=~/(\d+)\.(\d+)$/; |
|
| my $src= |
|
| &Apache::lonnet::declutter($hash{'src_'.$1.'.'.$2}); |
|
| my $symb= |
|
| &Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.$src; |
|
| my $add='<td>'; |
|
| my $adde='</td>'; |
|
| my $hwk='<font color="#223322">'; |
|
| my $hwke='</font>'; |
|
| if ($rid=~/^l(\d+\.\d+),(.+)/) { $linkid=$1; $rid=$2; } |
|
| if ($rid=~/^i(\d+),(.+)/) { $indent=$1; $rid=$2; } |
|
| if ($rid=~/^h(.+)/) { |
|
| $rid=$1; |
|
| $add='<th bgcolor="#AAFF55"><a name="'.$rid.'">'; |
|
| $adde='</th>'; |
|
| if (($ENV{'user.adv'}) && |
|
| ($parmhash{$symb.'.0.parameter_randompick'})) { |
|
| $adde=' (randomly select '. |
|
| $parmhash{$symb.'.0.parameter_randompick'}. |
|
| ')</th>'; |
|
| } |
} |
| } |
|
| if ($rid=~/^j(.+)/) { $rid=$1; } |
|
| if ($rid=~/^p(\d)(\d)\"([\w\: \(\)\/\,]*)\"(.+)/) { |
|
| # sub astatus describes what code/tcode mean |
|
| my $code=$1; |
|
| my $tcode=$2; |
|
| my $ctext=$3; |
|
| $rid=$4; |
|
| if ($tcode eq '1') { |
|
| $add='<td bgcolor="#AAAAAA">'; |
|
| } |
|
| if ($code eq '3') { |
|
| $add='<td bgcolor="#AAFFAA">'; |
|
| } elsif ($code eq '4') { |
|
| $add='<td bgcolor="#E0FFAA">'; |
|
| } else { |
|
| $add='<td bgcolor="#FFAAAA">'; |
|
| if ($tcode eq '2') { |
|
| $add='<td bgcolor="#FFFFAA">'; |
|
| } |
|
| if ($tcode eq '4') { |
|
| $add='<td bgcolor="#FFFF33">'; |
|
| $adde='</td>'; |
|
| } |
|
| } |
|
| $hwk='<font color="#888811"><b>'; |
|
| $hwke='</b></font>'; |
|
| if ($code eq '1') { |
|
| $hwke='</b> ('.$ctext.')</font>'; |
|
| } |
|
| if ($code eq '2' || $code eq '4') { |
|
| $hwk='<font color="#992222"><b>'; |
|
| $hwke='</b> ('.$ctext.')</font>'; |
|
| } |
|
| if ($code eq '3') { |
|
| $hwk='<font color="#229922"><b>'; |
|
| $hwke='</b> ('.$ctext.')</font>'; |
|
| } |
|
| } |
|
| if ($rid && $hash{'src_'.$rid} eq $currenturl) { |
|
| $add=$add.'<a name="curloc"></a>'. |
|
| '<font color=red size=+2><b>> </b></font>'; |
|
| $adde= |
|
| '<font color=red size=+2><b> <</b></font>'.$adde; |
|
| } |
|
| if ($discussiontimes{$symb}>$lastcheck) { |
|
| $adde= |
|
| '<img border=0 src="/adm/lonMisc/chat.gif">'. |
|
| $adde; |
|
| } |
|
| if ($error{$src}) { |
|
| foreach (split(/\,/,$error{$src})) { |
|
| if ($_) { |
|
| $adde= |
|
| ' <a href="/adm/email?display='. |
|
| &Apache::lonnet::escape($_). |
|
| '"><img src="/adm/lonMisc/bomb.gif" border=0></a>' |
|
| .$adde; |
|
| } |
|
| } |
|
| } |
|
| if ($feedback{$src}) { |
|
| foreach (split(/\,/,$feedback{$src})) { |
|
| if ($_) { |
|
| $adde= |
|
| ' <a href="/adm/email?display='. |
|
| &Apache::lonnet::escape($_). |
|
| '"><img src="/adm/lonMisc/feedback.gif" border=0></a>' |
|
| .$adde; |
|
| } |
|
| } |
|
| } |
|
| if ($indent) { |
|
| my $is=" "; |
|
| for(my $i=-1;$i<$indent;$i++) { $indentstr.=$is; } |
|
| } |
|
| if (!$linkid) { $linkid=$rid; } |
|
| if ($hash{'randomout_'.$rid}) { |
|
| $adde=' <i>(hidden)</i>'.$adde; |
|
| } |
} |
| $r->print($add.$indentstr); |
} |
| if ($rid) { |
} |
| $r->print('<a href="'.$hash{'src_'.$linkid}. |
} |
| (($hash{'src_'.$linkid}=~/\?/)?'&':'?'). |
my ($is_correct,$got_grade); |
| 'symb='.&Apache::lonnet::escape($symb) |
if ($self->is_task()) { |
| .'">'. |
my $taskstatus = $self->taskstatus(); |
| $hwk.$hash{'title_'.$rid}.$hwke.'</a>'); |
$is_correct = (($taskstatus eq 'pass') || |
| } |
($self->solved() =~ /^correct_/)); |
| $r->print($adde); |
$got_grade = ($taskstatus =~ /^(?:pass|fail)$/); |
| } |
} else { |
| $r->print('</tr>'); |
$got_grade = 1; |
| } |
$is_correct = ($self->solved() =~ /^correct_/); |
| } |
} |
| $r->print("\n</table>"); |
($checkedin,$checkedinslot) = $self->checkedin(); |
| $r->print('</body></html>'); |
if ($checkedin) { |
| # -------------------------------------------------------------------- End page |
if (!$got_grade) { |
| } |
return (WAITING_FOR_GRADE); |
| # ------------------------------------------------------------- End render page |
} elsif ($is_correct) { |
| } |
return (CORRECT); |
| # ------------------------------------------------------------------ Untie hash |
} |
| unless (untie(%hash)) { |
} |
| &Apache::lonnet::logthis("<font color=blue>WARNING: ". |
return(NOT_IN_A_SLOT); |
| "Could not untie coursemap $fn (browse).</font>"); |
} else { |
| } |
if (!$future_slots_checked) { |
| unless (untie(%parmhash)) { |
$future_slots = &get_future_slots($cdom,$cnum,$now); |
| &Apache::lonnet::logthis("<font color=blue>WARNING: ". |
$future_slots_checked = 1; |
| "Could not untie parmhash (browse).</font>"); |
} |
| |
if ($future_slots) { |
| |
return(NOT_IN_A_SLOT); |
| |
} |
| |
return(NOTRESERVABLE); |
| |
} |
| } |
} |
| return OK; |
return; |
| } |
} |
| |
|
| 1; |
sub get_future_slots { |
| __END__ |
my ($cdom,$cnum,$now) = @_; |
| |
my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum); |
| |
my $future_slots = 0; |
| |
foreach my $slot (keys(%slots)) { |
| |
if (($slots{$slot}->{'starttime'} > $now) && |
| |
($slots{$slot}->{'endtime'} > $now)) { |
| |
$future_slots ++; |
| |
} |
| |
} |
| |
return $future_slots; |
| |
} |
| |
|
| |
sub CLOSED { return 23; } |
| |
sub ERROR { return 24; } |
| |
|
| |
=pod |
| |
|
| |
B<Simple Status> |
| |
|
| |
Convenience method B<simpleStatus> provides a "simple status" for the resource. |
| |
"Simple status" corresponds to "which icon is shown on the |
| |
Navmaps". There are six "simple" statuses: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<CLOSED>: The problem is currently closed. (No icon shown.) |
| |
|
| |
=item * B<OPEN>: The problem is open and unattempted. |
| |
|
| |
=item * B<CORRECT>: The problem is correct for any reason. |
| |
|
| |
=item * B<INCORRECT>: The problem is incorrect and can still be |
| |
completed successfully. |
| |
|
| |
=item * B<ATTEMPTED>: The problem has been attempted, but the student |
| |
does not know if they are correct. (The ellipsis icon.) |
| |
|
| |
=item * B<ERROR>: There is an error retrieving information about this |
| |
problem. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
# This hash maps the composite status to this simple status, and |
| |
# can be used directly, if you like |
| |
my %compositeToSimple = |
| |
( |
| |
NETWORK_FAILURE() => ERROR, |
| |
NOTHING_SET() => CLOSED, |
| |
CORRECT() => CORRECT, |
| |
PARTIALLY_CORRECT() => PARTIALLY_CORRECT, |
| |
EXCUSED() => CORRECT, |
| |
PAST_DUE_NO_ANSWER() => INCORRECT, |
| |
PAST_DUE_ANSWER_LATER() => INCORRECT, |
| |
ANSWER_OPEN() => INCORRECT, |
| |
OPEN_LATER() => CLOSED, |
| |
TRIES_LEFT() => OPEN, |
| |
INCORRECT() => INCORRECT, |
| |
OPEN() => OPEN, |
| |
ATTEMPTED() => ATTEMPTED, |
| |
CREDIT_ATTEMPTED() => CORRECT, |
| |
ANSWER_SUBMITTED() => ATTEMPTED |
| |
); |
| |
|
| |
sub simpleStatus { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
my $status = $self->status($part); |
| |
return $compositeToSimple{$status}; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<simpleStatusCount> will return an array reference containing, in |
| |
this order, the number of OPEN, CLOSED, CORRECT, INCORRECT, ATTEMPTED, |
| |
and ERROR parts the given problem has. |
| |
|
| |
=cut |
| |
|
| |
# This maps the status to the slot we want to increment |
| |
my %statusToSlotMap = |
| |
( |
| |
OPEN() => 0, |
| |
CLOSED() => 1, |
| |
CORRECT() => 2, |
| |
INCORRECT() => 3, |
| |
ATTEMPTED() => 4, |
| |
ERROR() => 5 |
| |
); |
| |
|
| |
sub statusToSlot { return $statusToSlotMap{shift()}; } |
| |
|
| |
sub simpleStatusCount { |
| |
my $self = shift; |
| |
|
| |
my @counts = (0, 0, 0, 0, 0, 0, 0); |
| |
foreach my $part (@{$self->parts()}) { |
| |
$counts[$statusToSlotMap{$self->simpleStatus($part)}]++; |
| |
} |
| |
|
| |
return \@counts; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<Completable> |
| |
|
| |
The completable method represents the concept of I<whether the student can |
| |
currently do the problem>. If the student can do the problem, which means |
| |
that it is open, there are tries left, and if the problem is manually graded |
| |
or the grade is suppressed via problemstatus, the student has not tried it |
| |
yet, then the method returns 1. Otherwise, it returns 0, to indicate that |
| |
either the student has tried it and there is no feedback, or that for |
| |
some reason it is no longer completable (not open yet, successfully completed, |
| |
out of tries, etc.). As an example, this is used as the filter for the |
| |
"Uncompleted Homework" option for the nav maps. |
| |
|
| |
If this does not quite meet your needs, do not fiddle with it (unless you are |
| |
fixing it to better match the student's conception of "completable" because |
| |
it's broken somehow)... make a new method. |
| |
|
| |
=cut |
| |
|
| |
sub completable { |
| |
my $self = shift; |
| |
if (!$self->is_problem()) { return 0; } |
| |
my $partCount = $self->countParts(); |
| |
|
| |
foreach my $part (@{$self->parts()}) { |
| |
if ($part eq '0' && $partCount != 1) { next; } |
| |
my $status = $self->status($part); |
| |
# "If any of the parts are open, or have tries left (implies open), |
| |
# and it is not "attempted" (manually graded problem), it is |
| |
# not "complete" |
| |
if ($self->getCompletionStatus($part) == ATTEMPTED() || |
| |
$self->getCompletionStatus($part) == CREDIT_ATTEMPTED() || |
| |
$status == ANSWER_SUBMITTED() ) { |
| |
# did this part already, as well as we can |
| |
next; |
| |
} |
| |
if ($status == OPEN() || $status == TRIES_LEFT()) { |
| |
return 1; |
| |
} |
| |
} |
| |
|
| |
# If all the parts were complete, so was this problem. |
| |
return 0; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=head2 Resource/Nav Map Navigation |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getNext>(): |
| |
|
| |
Retreive an array of the possible next resources after this |
| |
one. Always returns an array, even in the one- or zero-element case. |
| |
|
| |
=item * B<getPrevious>(): |
| |
|
| |
Retreive an array of the possible previous resources from this |
| |
one. Always returns an array, even in the one- or zero-element case. |
| |
|
| |
=cut |
| |
|
| |
sub getNext { |
| |
my $self = shift; |
| |
my @branches; |
| |
my $to = $self->to(); |
| |
foreach my $branch ( split(/,/, $to) ) { |
| |
my $choice = $self->{NAV_MAP}->getById($branch); |
| |
#if (!$choice->condition()) { next; } |
| |
my $next = $choice->goesto(); |
| |
$next = $self->{NAV_MAP}->getById($next); |
| |
|
| |
push @branches, $next; |
| |
} |
| |
return \@branches; |
| |
} |
| |
|
| |
sub getPrevious { |
| |
my $self = shift; |
| |
my @branches; |
| |
my $from = $self->from(); |
| |
foreach my $branch ( split /,/, $from) { |
| |
my $choice = $self->{NAV_MAP}->getById($branch); |
| |
my $prev = $choice->comesfrom(); |
| |
$prev = $self->{NAV_MAP}->getById($prev); |
| |
|
| |
push @branches, $prev; |
| |
} |
| |
return \@branches; |
| |
} |
| |
|
| |
sub browsePriv { |
| |
my $self = shift; |
| |
if (defined($self->{BROWSE_PRIV})) { |
| |
return $self->{BROWSE_PRIV}; |
| |
} |
| |
|
| |
$self->{BROWSE_PRIV} = &Apache::lonnet::allowed('bre',$self->src(), |
| |
$self->symb()); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
1; |
| |
|
| |
__END__ |
| |
|
| |
|
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