File:  [LON-CAPA] / loncom / interface / lonsyllabus.pm
Revision 1.106.2.5: download - view: text, annotated - select for diffs
Wed Feb 17 18:42:38 2010 UTC (14 years, 2 months ago) by faziophi
Branches: bz6209
Diff to branchpoint 1.106: preferred, colored
Work-in-progress commit on bug 6209.

--> New (still non-functional) contextual section bar and section title bar
--> Disable "Enable/Disable WYSIWYG" link
--> Hide unnecessary fields in .LC_Box'es temporarily for display purposes
--> No longer preview content above edit box
    --> This will eventually be replaced by a "Preview" button which
        will generate a processed copy of the field via an AJAX request.
--> No longer print "Save all", "Delete", etc. fields beneath edit box,
    because I am masochistic and wanted to get rid of the only part
    of the interface that actually works as advertised right now.

STILL NOT TOUCHED:
-- same as last commit

New pretty screenshot attached on Bugzilla.

# The LearningOnline Network
# Syllabus
#
# $Id: lonsyllabus.pm,v 1.106.2.5 2010/02/17 18:42:38 faziophi Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#

package Apache::lonsyllabus;

use strict;
use Apache::lontemplate;
use Apache::Constants qw(:common);
use Apache::loncommon;
use Apache::lonnet;
use Apache::lontexconvert;
use Apache::lonfeedback;
use Apache::lonannounce;
use Apache::lonlocal;
use Apache::lonhtmlcommon;
use Apache::lonspeller();
use HTML::Entities();
use Digest::MD5 qw(md5_hex);
use Storable qw(freeze thaw);

# These are strings representing types of fields
# that will used to parse/display a field correctly
use constant {
	TYPE_TEXT_HTML => 'html',  #<-- default
	TYPE_TEXT_PLAIN => 'text',
	TYPE_URL_INCLUDE => 'include-url',
};

sub handler {
    my $r = shift;
    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;
    return OK if $r->header_only;

    my $target=$env{'form.grade_target'};
# --------------------------------------------------- Get course info from URL
    my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
# ------------------------------------------------------------ Get query string
    &Apache::loncommon::get_unprocessed_cgi
                        ($ENV{'QUERY_STRING'},['delete', 'rename', 'field', 'forcestudent','register','forceedit','forceflush','wrapperdisplay']);
# ----------------------------------------------------- Is this even a course?
    my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
    if ($homeserver eq 'no_host') {
        &Apache::loncommon::content_type($r,'text/html');
        $r->send_http_header;
        &Apache::loncommon::simple_error_page($r,'No syllabus available',
                          'No syllabus available');
        return OK;
    }
# ------------------------------------- There is such a course, get environment
    my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);

# ------------------------------------------------------------ Print the screen
    if ($target eq 'tex') {
        $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
    }
    
# -------------------------------------------------- Let's see who handles this
    my $externalsyllabus=$courseenv{'externalsyllabus'};
    if ($externalsyllabus=~/\w/) {
       if ($env{'form.wrapperdisplay'} eq 'menu') {
           $r->print(&Apache::lonwrapper::simple_menu());
       } else {
           $r->print(&Apache::lonwrapper::wrapper("/public/$cdom/$cnum/syllabus?wrapperdisplay=menu",
                           $externalsyllabus));
       }
       return OK;
    }

# --------------------------------------------------------- The old syllabus fields
    my %syllabusfields=&Apache::lonlocal::texthash(
       'aaa_instructorinfo' => 'Instructor Information',
       'bbb_description'    => 'Course Description',
       'ccc_prereq'         => 'Prerequisites',
       'cdc_classhours'     => 'Class Hours',
       'ddd_officehours'    => 'Office Hours',
       'eee_helproom'       => 'Helproom Hours',
       'efe_projectinfo'    => 'Project Information',
       'fff_examinfo'       => 'Exam Information',
       'fgf_deadlines'      => 'Deadlines',
       'ggg_grading'        => 'Grading Information',
       'hhh_readings'       => 'Readings',
       'iii_coursepack'     => 'Coursepack',
       'jjj_weblinks'       => 'Web Links',
       'kkk_textbook'       => 'Textbook',
       'lll_includeurl'     => 'URLs To Include in Syllabus');
       
# --------------------------------------------------------------- Force Student
    my $forcestudent='';
    if ($env{'form.forcestudent'}) { $forcestudent='student'; };
    my $forceedit='';
    if ($env{'form.forceedit'}) { $forceedit='edit'; }

# ----------------------------------------------------------------- Make header
    if ($target ne 'tex') {
        my $rss_link = &Apache::lonrss::rss_link($cnum,$cdom);
        my $js;
        if ($env{'form.backto'} eq 'coursecatalog') {
            $js .= <<"ENDSCRIPT";

<script type="text/javascript">
function ToCatalog(caller) {
    numidx = getIndexByName('coursenum');
        if (numidx > -1) {
            if (caller != 'details') {
                document.backtocat.elements[numidx].value = '';
            }
        }
    document.backtocat.submit();
}

function getIndexByName(item) {
    for (var i=0;i<document.backtocat.elements.length;i++) {
        if (document.backtocat.elements[i].name == item) {
            return i;
        }
    }
    return -1;
}

</script>

ENDSCRIPT
        }
        $js .= <<'ENDSCRIPT';

<style type="text/css">
	.LC_Sortable ul { list-style-type: none; margin: 0px; padding: 0px}
	.LC_Sortable li { list-style-type: none; cursor: pointer; margin: 0px 5px 5px 5px; padding: 5px; padding-left: 1.5em; width: 200px; font-size:90% }
	.LC_Sortable li span.left { float: left; cursor: move; margin-left: -1.5em; }
	.LC_Sortable li span.right { float: right; cursor: auto; margin-right: 0em }
	.LC_EllipseOverflow { overflow: hidden; text-overflow: ellipsis; -o-text-overflow: ellipsis; white-space: nowrap; }
	.LC_ActivityBarButton-IconLeft { padding-left: 20px }
	.LC_ActivityBarButton-IconLeft .ui-icon { float:left; margin-left: -18px; }
	#scrollable-fields-container {float:left; background-color: white; width: 235px; border: 1px solid grey; margin: 0px; -moz-border-radius: 4px; -webkit-border-radius: 4px; border-radius: 4px;}
	#syllabus-fields-actions {text-align: center}
	#syllabus-content {-moz-border-radius: 4px; -webkit-border-radius: 4px; border-radius: 4px; margin: -6px 0 0 239px; position: relative; z-index: 2; padding: 9px 5px 5px 5px; background-color: #fafafa; border:solid 1px grey}
	#activity-bar {-moz-border-radius: 4px; -webkit-border-radius: 4px; border-radius: 4px; border: solid 1px grey; background-color: #dddddd; padding: 0px 0px;margin: 5px 0 2px 0;}	
	#activity-bar button { font-size: 100%; vertical-align: middle }
	#context-bar {z-index: 4; position: relative; -moz-border-bottom-left-radius: 4px; -webkit-border-bottom-left-radius: 4px; border-bottom-left-radius: 4px; -moz-border-bottom-right-radius: 4px; -webkit-border-bottom-right-radius: 4px; border-bottom-right-radius: 4px; border: solid 1px grey; background-color: #eeeeee; padding: 0px 0px;margin:-1px 0 0px 239px;}
	#title-bar {-moz-border-top-left-radius: 4px; -webkit-border-top-left-radius: 4px; border-top-left-radius: 4px; -moz-border-top-right-radius: 4px; -webkit-border-top-right-radius: 4px; border-top-right-radius: 4px; border: solid 1px grey; background-color: #eaeaea; padding: 0px 0px;margin: 2px 0 0 239px}
	#title-bar img {vertical-align: middle} 
	#title-bar button {vertical-align: middle}
	#title-bar h4 {padding:0px}
	#section-type-button {padding: 2px;margin-left:2px;}
</style>

<script type="text/javascript">
	// public domain code to emulate text-overflow:ellipsis in Firefox using jQuery
	(function($) {
		$.fn.ellipsis = function(enableUpdating){
			var s = document.documentElement.style;
			if (!('textOverflow' in s || 'OTextOverflow' in s)) {
				return this.each(function(){
					var el = $(this);
					if(el.css("overflow") == "hidden"){
						var originalText = el.html();
						var w = el.width();
						
						var t = $(this.cloneNode(true)).hide().css({
							'position': 'absolute',
							'width': 'auto',
							'overflow': 'visible',
							'max-width': 'inherit'
						});
						el.after(t);
						
						var text = originalText;
						while(text.length > 0 && t.width() > el.width()){
							text = text.substr(0, text.length - 1);
							t.html(text + "...");
						}
						el.html(t.html());
						
						t.remove();
						
						if(enableUpdating == true){
							var oldW = el.width();
							setInterval(function(){
								if(el.width() != oldW){
									oldW = el.width();
									el.html(originalText);
									el.ellipsis();
								}
							}, 200);
						}
					}
				});
			} else return this;
		};
	})(jQuery);
	
	var changesMade = false;
	var changesBreakVersion = false;
	
	jQuery(document).ready(function() {
		jQuery('.LC_EllipseOverflow').ellipsis();
		jQuery('#syllabus-fields li').click(function() {
			jQuery(this).parent().children('li').removeClass('ui-state-highlight');
			jQuery(this).addClass('ui-state-highlight');
			var id = /title-([0-9_]+)/i.exec(jQuery(this).attr('id'));
			jQuery('#syllabus-form .LC_Box').hide();
			jQuery('#box-'+id[1]).show();
			// START TEMPORARY CODE FOR DEMO'S SAKE
			jQuery('#syllabus-form .LC_hcell').hide();
			jQuery('#section-title-text').html(
				jQuery('#box-'+id[1]).find('.LC_hcell').html()
			); 
			// END TEMPORARY CODE
		});
		jQuery('#syllabus-fields').sortable({
			revert: true,
			axis: 'y',
			cursor: 'move',
			placeholder: 'ui-state-highlight',
			handle: 'span.ui-icon-arrowthick-2-n-s',
			forcePlaceholderSize: true,
			start: function(event, ui) {
				jQuery(ui.item).css('font-style', 'italic');
			},
			stop: function(event, ui) {
				var order = [];
				jQuery(ui.item).parent().children('li').each(function() {
					var id = /title-([0-9_]+)/i.exec(jQuery(this).attr('id'));
					order.push(id[1]);
				});
				if (!changesMade) {
					changesMade = true;
					$('#save-button').addClass('ui-state-highlight');
					$('#save-button').removeClass('ui-state-disabled');
				}
			}
		});
		jQuery('#syllabus-fields li').disableSelection();
		jQuery('.RemoveSection').hide();
		jQuery('#syllabus-fields li').hover(
			function(){
				jQuery(this).find('.RemoveSection').toggle();
			},
			function(){
				jQuery(this).find('.RemoveSection').toggle();
			}
		);
		jQuery('#syllabus-fields li span.right').hover(
			function(){
				jQuery(this).css('background-image', 'url("/adm/jQuery/css/smoothness/images/ui-icons_2e83ff_256x240.png")');
			},
			function(){
				jQuery(this).css('background-image', 'url("/adm/jQuery/css/smoothness/images/ui-icons_454545_256x240.png")');
			}
		);
		jQuery('#syllabus-form .LC_Box').hide();
		jQuery('.LC_ActivityBarButton').hover(
			function(){ 
				$(this).addClass("ui-state-hover"); 
			},
			function(){ 
				$(this).removeClass("ui-state-hover"); 
			}
		);
	});
</script>
ENDSCRIPT
        my $start_page =
         &Apache::loncommon::start_page("Syllabus", $rss_link.$js,
                       {'function'       => undef,
                        'domain'         => $cdom,
                        'force_register' =>
                        $env{'form.register'},});

        $r->print($start_page);
        if ($env{'form.backto'} eq 'coursecatalog') {
            &Apache::lonhtmlcommon::clear_breadcrumbs();
            &Apache::lonhtmlcommon::add_breadcrumb
                ({href=>"javascript:ToCatalog()",
                text=>"Course/Community Catalog"});
            if ($env{'form.coursenum'} ne '') {
                &Apache::lonhtmlcommon::add_breadcrumb
                    ({href=>"javascript:ToCatalog('details')",
                    text=>"Course details"});
            }
            &Apache::lonhtmlcommon::add_breadcrumb
                ({href=>$r->uri,
                text=>"Course syllabus"});
            $r->print(&Apache::lonhtmlcommon::breadcrumbs());
        }
    }
# ---------------------------------------------------------- Load syllabus info
    my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);  # load db
    my $allowed=0;  # can we edit this page?
    my $privileged=0;
    my %data;
    if ($env{'form.forceflush'}) {
    	delete $syllabus{'data.fields'};
    	&Apache::lonnet::del('syllabus', ['data.fields'], $cdom, $cnum);
    	delete $syllabus{'properties.v2_conflict'};
    	&Apache::lonnet::del('syllabus', ['properties.v2_conflict'], $cdom, $cnum);
    	delete $syllabus{'properties.v2_conflict_fail'};
    	&Apache::lonnet::del('syllabus', ['properties.v2_conflict_fail'], $cdom, $cnum);
    	delete $syllabus{'properties.last_modified'};
    	&Apache::lonnet::del('syllabus', ['properties.last_modified'], $cdom, $cnum);
    	delete $syllabus{'properties.v2_converted'};
    	&Apache::lonnet::del('syllabus', ['properties.v2_converted'], $cdom, $cnum);
    	delete $syllabus{'data.old_new_map'};
    	&Apache::lonnet::del('syllabus', ['data.old_new_map'], $cdom, $cnum);
    	delete $syllabus{'data.deleted_fields'};
    	&Apache::lonnet::del('syllabus', ['data.deleted_fields'], $cdom, $cnum);
		%syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);  # load db
    	$r->print("Flushed syllabus DB file.<br />");
    	$r->print("Syllabus conflict: ".$syllabus{'properties.v2_conflict'}."<br />");
   	}
   	#$r->print("Existing fields: ".$syllabus{'data.fields'}."<br />");
   	#$r->print("Old-new map: ".$syllabus{'data.old_new_map'}."<br />");
   	#$r->print("Deleted fields: ".$syllabus{'data.deleted_fields'}."<br />");
    if (!exists($syllabus{'data.fields'})) {
    	# convert existing 2.x data to new DB fields
    	# which become new primary data source for document
		%data = %{convert_from_v2($r, \%syllabus, \%syllabusfields, 0)};
		#$r->print("New fields order: ".$data{'data.fields'}."<br />");
		&Apache::lonnet::put('syllabus',\%data,$cdom,$cnum);
    } elsif (  !exists($syllabus{'properties.v2_converted'}) && 
    		   exists($syllabus{'uploaded.lastmodified'}) &&
    		   exists($syllabus{'properties.last_modified'}) &&
    		   ($syllabus{'uploaded.lastmodified'} !=
    		   $syllabus{'properties.last_modified'})) {
    	# if the document has been saved in 3.x and later edited in 
    	# 2.x, reconvert the existing document, with extra warning
    	%data = %{convert_from_v2($r, \%syllabus, \%syllabusfields, 1)};
    	delete $data{'properties.v2_converted'};
    	&Apache::lonnet::del('syllabus', ['properties.v2_converted'], $cdom, $cnum);
    	$data{'properties.v2_conflict'} = 1;
		&Apache::lonnet::put('syllabus',\%data,$cdom,$cnum);    	
    } else {
    	%data = %syllabus;
    	
    }

# ----------------------------------------------------- Only if not public call
    if ($env{'user.environment'}) { # does this user have privileges to post, etc?
        if ($env{'request.course.id'}
        && $cdom eq $env{'course.'.$env{'request.course.id'}.'.domain'}
        && $cnum eq $env{'course.'.$env{'request.course.id'}.'.num'}) {
            $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
            $privileged=$allowed;
            if (($data{'uploaded.lastmodified'}) && (!$forceedit)) {
                $forcestudent='student';
            }
            if ($forcestudent or $target eq 'tex') { $allowed=0; }
        }
		#store what the user typed in
		my @fields = @{thaw($data{'data.fields'})};
		if (($allowed) && ($env{'form.delete'})) {
			my $field = $env{'form.delete'};
			chomp($field);
			#allow only numbers, underscores
			$field=~s/[^0-9_]//g;
			#check if the field exists
			#do not delete if file in v2 conversion mode
			if (exists($data{'data.field.'.$field}) &&
				!exists($data{'properties.v2_converted'})) {
				#$r->print("Field '$field' can be deleted.<br />");
				# linearly parse "data.fields" and remove it
				for (my $i = 0; $i < length(@fields); $i++) {
					if ($fields[$i] eq $field) {
						splice(@fields, $i, 1);
						#$r->print("Removed entry $i from 'data.fields'<br />");
					}
				}
				# if "data.deleted" does not exist, create it
				my @deleted;
				if (!exists($data{'data.deleted_fields'})) {
					@deleted = [];
				} else {
					@deleted = @{thaw($data{'data.deleted_fields'})};
				}
				# only if deleted does not exist in 'data.deleted', push it
				my $push = 1;
				for (my $i = 0; $i < length(@deleted); $i++) {
					if ($deleted[$i] eq $field) {
						$push = 0;
						last;
					}
				}
				unless (!$push) {
					push(@deleted, $field);
				}
				$data{'data.fields'} = freeze(\@fields);
				$data{'data.deleted_fields'} = freeze(\@deleted);
				
				&Apache::lonnet::put('syllabus',\%data,$cdom,$cnum);
			}
		}
		if (($allowed) && ($env{'form.rename'})) {
			my $field = $env{'form.rename'};
			my $new_title = "Hello, World!";
			chomp($field);
			$field=~s/[^0-9_]//g;
			#check if the field exists
			#do not delete if file in v2 conversion mode
			if (exists($data{'data.field.'.$field}) &&
				!exists($data{'properties.v2_converted'})) {
				#sanitize HTML content
				#$r->print("Rename -- field found.<br />");
				my %db_entry = %{thaw($data{'data.field.'.$field})};
				$new_title = &Apache::lonfeedback::clear_out_html($new_title, 1);
				$db_entry{title} = $new_title;
				$data{'data.field.'.$field} = freeze(\%db_entry);
				&Apache::lonnet::put('syllabus',\%data,$cdom,$cnum);
			}
		}
        if (($allowed) && ($env{'form.storesyl'})) {
            foreach my $syl_field (@fields) {
                my $field=$env{'form.'.$syl_field};
                my $type;
                my %field_hash;
                # only update a field if it already exists!
                if (exists($data{'data.field.'.$syl_field})) {
                	#$r->print("Creating/updated field ".$syl_field."<br />");
                	%field_hash = exists($data{'data.field.'.$syl_field}) ?
                						%{thaw($data{'data.field.'.$syl_field})} : ();
                	$type = exists($field_hash{type}) ? $field_hash{type} : TYPE_TEXT_HTML;
					chomp($field);
					$field=~s/\s+$//s;
					$field=~s/^\s+//s;
					$field=~s/\<br\s*\/*\>$//s;
					$field=&Apache::lonfeedback::clear_out_html($field,1);
					$field_hash{content}=$field;
					if ($type eq TYPE_URL_INCLUDE) { # clean up included URLs
						my $field='';
						foreach my $value (split(/\n/,$field_hash{content})) {
							my $url=$value;
							# get rid of leading and trailing spaces
							$url=~s/^\s+//;
							$url=~s/\s+$//;
							if ($url=~m|^https?\://([^/]+)/(.+)$|) {
								my $host = $1;
								my $remainder=$2;
								# remove the hostname from internal URLs
								my $hostname = &Apache::lonnet::hostname($host);
								my %all_hostnames = &Apache::lonnet::all_hostnames();
								foreach my $possible_host (keys(%all_hostnames)) {
									if ($possible_host =~ /\Q$hostname\E/i) {
										$url=$remainder;
									}
								}
							}
							# norm internal URLs
							unless ($url=~/^https?\:/) {
								$url=&Apache::lonnet::clutter($url);
							}
							# re-assemble field
							if ($url) {
								$field.=$url."\n";
							}
						}
	    	               $field_hash{content}=$field;
		                   $field_hash{type}=TYPE_URL_INCLUDE;
					}
					$data{'data.field.'.$syl_field} = freeze(\%field_hash);
				} 
            }
            $data{'uploaded.domain'}=$env{'user.domain'};
            $data{'uploaded.name'}=$env{'user.name'};
            my $time = $^T;
            $data{'uploaded.lastmodified'}=$time;
            $data{'properties.last_modified'}=$time;
            delete $data{'properties.v2_converted'};
            delete $data{'properties.v2_conflict'};
            delete $data{'properties.v2_conflict_fail'};
            &Apache::lonnet::del('syllabus', ['properties.v2_converted', 
            	'properties.v2_conflict', 'properties.v2_conflict_fail'], $cdom, $cnum);
            	
            #2.x compatibility: write to old fields with new mapped fields
            my %old_new_map = %{thaw($data{'data.old_new_map'})};
            foreach my $old_field (keys(%old_new_map)) {
            	#$r->print("Looking for: ".$old_field." at ".$old_new_map{$old_field}."<br />");
            	if (exists($data{'data.field.'.$old_new_map{$old_field}})) {
            		#$r->print("updating old field ".$old_field."<br />");
            		my %new_field = %{thaw($data{'data.field.'.$old_new_map{$old_field}})};
            		$data{$old_field} = $new_field{content};
            	}
            }
              
            &Apache::lonnet::put('syllabus',\%data,$cdom,$cnum);
        }
    }

#--------Functions
    if( ($allowed || $privileged) && $target ne 'tex') {
        my $functions=&Apache::lonhtmlcommon::start_funclist();
        if ($allowed) {
			#if you have the register flag, keep it
			if($env{'form.register'} == 1) {
            	$functions.=&Apache::lonhtmlcommon::add_item_funclist(
                          '<a href="'.$r->uri.'?forcestudent=1&amp;register=1">'
                           .&mt('Show Public View').'</a>'
                           .&Apache::loncommon::help_open_topic(
                                'Uploaded_Templates_PublicView'));
			} else {
            	$functions.=&Apache::lonhtmlcommon::add_item_funclist(
                          '<a href="'.$r->uri.'?forcestudent=1">'
                           .&mt('Show Public View').'</a>'
                           .&Apache::loncommon::help_open_topic(
                                'Uploaded_Templates_PublicView'));
			}
        } elsif ($privileged) {
			if($env{'form.register'} == 1) {
	            $functions.=&Apache::lonhtmlcommon::add_item_funclist(
                           '<a href="'.$r->uri.'?forceedit=1&amp;register=1">'
                            .&mt('Edit').'</a>');
			} else {
	            $functions.=&Apache::lonhtmlcommon::add_item_funclist(
                           '<a href="'.$r->uri.'?forceedit=1">'
                            .&mt('Edit').'</a>');
			}
        }

        $functions.=&Apache::lonhtmlcommon::end_funclist();
        $r->print(&Apache::loncommon::head_subbox($functions));
    }

#---------------------Print External URL Syllabus Info and Help Text
    if( ($allowed) && ($target ne 'tex') ) {
        my $protocol = $Apache::lonnet::protocol{$homeserver};
          $protocol = 'http' if ($protocol ne 'https');
        $r->print('<p class="LC_info">'
                 .&mt('This syllabus can be publicly viewed at [_1]'
                     ,'<tt>'.$protocol.'://'.&Apache::lonnet::hostname($homeserver).$r->uri.'</tt>')
                 .'&nbsp;'.&Apache::loncommon::help_open_topic('Syllabus_ExtLink')
                 .'</p>'
                 .'<p class="LC_info">'
                 .&mt('Instead of using this template you can specify an external URL as Syllabus in the [_1]Course Configuration[_2].'
                     ,'<a href="/adm/courseprefs?actions=courseinfo&amp;phase=display">','</a>')
                 .'</p>'
        );
        #-Print Help Text
        $r->print(&Apache::loncommon::help_open_topic( 
                        'Uploaded_Templates_TextBoxes',
                        &mt('Help with filling in text boxes')));
    }

#----------Print last update
    my $lastmod=$syllabus{'uploaded.lastmodified'};
    $lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
    my $who = &Apache::loncommon::aboutmewrapper(
        &Apache::loncommon::plainname($syllabus{'uploaded.name'},
        $syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
        $syllabus{'uploaded.domain'});
    if ($target ne 'tex') {
        $r->print('<div class="LC_info">'.&mt('Last updated').': '.
            $lastmod . ' '.
            ($who ? &mt('by').' '.$who
                           : '' ) .
             '</div>' );

    } else {
        $r->print('\\\\ '.&mt('Last updated').': '.$lastmod.' '.
            ($who? &mt('by').'\\\\ '.
                    &Apache::loncommon::plainname($syllabus{'uploaded.name'},$syllabus{'uploaded.domain'})
                  :'')
             .'\\\\');
    }
    if ($allowed && $data{'properties.v2_converted'} == 1) {
    	$r->print("<em>This document was created with LON-CAPA 2.x.  Modifying it may cause it to not display correctly on older servers.</em><br/>");
	}
	if ($allowed && $data{'properties.v2_conflict'} == 1) {
		$r->print("<em>This document was saved with LON-CAPA 3.x, then further edited in LON-CAPA 2.x.</em><br/>");
		if ($data{'properties.v2_conflict_fail'} == 1) {
			$r->print("<em>Some fields in LON-CAPA 2.x no longer have an equivalent in LON-CAPA 3.x.  These fields were appended; some fields may be duplicated or not match.</em><br />");
		} else {
			$r->print("<em>These changes were automatically transferred to LON-CAPA 3.x</em>");
		}
	}

#----------------------------Print Headtitle
    if ($target ne 'tex') {
        $r->print('<h1>'.$courseenv{'description'}.'</h1>');
        $r->print('<h3>'.  &Apache::lonnet::domain($cdom,'description').'</h3>');
    } else {
        $r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
        &Apache::lonnet::domain($cdom,'description').'}\\\\');
    }

# -------------------------------------------------------- Get course personnel
    my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
    if ($target ne 'tex') {
        $r->print(&Apache::lonhtmlcommon::start_pick_box());
    } else {
        $r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
    }
    my @personnel=sort(keys(%coursepersonnel));
    my $lastpers=$personnel[$#personnel];
    foreach my $element (@personnel) {
        if ($target ne 'tex') {
            $r->print(&Apache::lonhtmlcommon::row_title($element));
        } else {
            $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & ');
        }
        foreach (split(/\,/,$coursepersonnel{$element})) {
            my ($puname,$pudom)=split(/\:/,$_);
            if ($target ne 'tex') {
                my $courseperson = &Apache::loncommon::plainname($puname,$pudom);
                if (($env{'user.name'} eq '') || ($env{'user.name'} eq 'public') ||
                    ($env{'user.domain'} eq '') || ($env{'user.domain'} eq 'public')) {
                    $r->print(' '.$courseperson);
                } else {
                    $r->print(' '.&Apache::loncommon::aboutmewrapper($courseperson,
                              $puname,$pudom));
                }
            } else {
                $r->print(' '.&Apache::loncommon::plainname($puname,
                              $pudom).' ');
            }
        }
        if ($target ne 'tex') {
            my $lastclose=$element eq $lastpers?1:0;
            $r->print(&Apache::lonhtmlcommon::row_closure($lastclose));
        } else {
            $r->print('\\\\ \hline');
        }
    }
    if ($target ne 'tex') {
        $r->print(&Apache::lonhtmlcommon::end_pick_box());
    } else {
        $r->print('\end{tabular}\\\\');
    }
# -------------------------------------------------------------- Announcements?
    my $day = &Apache::lonannounce::showday(time,2,
             &Apache::lonannounce::readcalendar($cdom.'_'.$cnum));
    if ($target ne 'tex') {
    	if ($allowed) {
    		&print_activity_bar($r, \%data, $target, $allowed, Apache::lontemplate->RICH_TEXT_DETECT_HTML);
    		&print_field_sortable($r, \%data, $target, $allowed, Apache::lontemplate->RICH_TEXT_DETECT_HTML);
        	&print_title_bar($r, \%data, $target, $allowed, Apache::lontemplate->RICH_TEXT_DETECT_HTML);
        	&print_context_bar($r, \%data, $target, $allowed, Apache::lontemplate->RICH_TEXT_DETECT_HTML);
        }
        $r->print("<div id='syllabus-content'>\n");

    } else {
        $r->print(&Apache::lonxml::xmlparse($r,'tex',$day));
    }
    
# ---------------------------------------------------------------- Get syllabus
    if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
        if ($allowed) {
            $r->print('<form id="syllabus-form" method="post" action="">'.
            '<input type="hidden" name="forceedit" value="edit" />');
        }
        my @htmlids=();
		my $url_include_handler = sub {
			my ($r, $field, $json_ref, $group, $target, $allowed) = @_;
			my $message = $json_ref->{items}{$field}{content};
			my $title = $json_ref->{items}{$field}{title};
			my $urls = $message;
			foreach my $filelink (split(/\n/,$urls)) {
				my $output='';
			   # embed style?
				my ($curfext)=($filelink=~/\.([^\.]+)$/);
				my $embstyle=&Apache::loncommon::fileembstyle($curfext);
				if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {# make ssi call and remove everything but the body contents
					$output=&Apache::lonnet::ssi_body($filelink);
				} elsif ($embstyle eq 'img') {# embed as an image
					$output='<img src="'.$filelink.'" />';
				}
				if ($output ne '') {
					   $message='';
					   if ($target ne 'tex') {
						   $message.='<p>'.$output.'</p>';
					   } else {
						   $message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
					   }
				}
			}
			if ($allowed) {
				 &Apache::lonfeedback::newline_to_br(\$urls);
				 &Apache::lontemplate::print_start_template($r,$title.
						  &Apache::loncommon::help_open_topic('Syllabus_URLs'),'LC_Box');
				 $r->print($urls);
				 $r->print("<br /><div>");
				 &Apache::lontemplate::print_textarea_template($r, $message,
					$field, Apache::lontemplate->RICH_TEXT_ALWAYS_OFF);
				 &Apache::lontemplate::print_saveall_template($r);                         
				 $r->print("</div>");
				 &Apache::lontemplate::print_end_template($r);

			} else {
				$r->print($message);
			}
		};
		my %custom_hash = ( TYPE_URL_INCLUDE() => $url_include_handler );
 		@htmlids = &print_template_new_fields($r, \%data, 
 			$target, $allowed, Apache::lontemplate->RICH_TEXT_DETECT_HTML, \%custom_hash);
        if ($allowed) {
            $r->print('</form>');
            $r->print(&Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
        }
        if ($target ne 'tex') {$r->print('</div><p style="clear:both">&nbsp;</p>');}
        if ($allowed) {
            &Apache::lontemplate::print_start_template($r,'RSS Feeds and Blogs','LC_Box');
            $r->print(&Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit));
            my $editurl= &Apache::lonnet::absolute_url().'/adm/'.$cdom.'/'.$cnum.'/_rss.html';
            $r->print( '<a href="'.$editurl.'">'.&mt('New RSS Feed or Blog').'</a>');
            &Apache::lontemplate::print_end_template($r);
        } elsif (&Apache::lonrss::advertisefeeds($cnum,$cdom) ne '') {
            &Apache::lontemplate::print_start_template($r,'RSS Feeds and Blogs','LC_Box');
            $r->print(&Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit));
            &Apache::lontemplate::print_end_template($r);
        }
    } else {
        if ($target ne 'tex') {$r->print('<p>');} else {$r->print('\par ');}
        $r->print(&mt('No syllabus information provided.'));
        if ($target ne 'tex') {$r->print('</p>');}
    }
    if ($target ne 'tex') {
        if ($env{'form.backto'} eq 'coursecatalog') {
            $r->print('<form name="backtocat" method="post" action="/adm/coursecatalog">'.
                      &Apache::lonhtmlcommon::echo_form_input(['backto','courseid']).
                      '</form>');
        }
        $r->print(&Apache::loncommon::end_page());
    } else {
        $r->print('\end{document}');
    }
    return OK;
}

sub print_activity_bar {
	my ($r, $data_ref, $target, $allowed, $default_rich_text, $group) = @_;
	$r->print("<div id='activity-bar'>
<button id='save-button' type='button' class='LC_ActivityBarButton LC_ActivityBarButton-IconLeft ui-state-default ui-priority-primary ui-corner-all'>
	<span class='ui-icon ui-icon-disk'></span><a href='#'>Save</a>
</button>

</div>");
}

sub print_title_bar {
	my ($r, $data_ref, $target, $allowed, $default_rich_text, $group) = @_;
	$r->print("<div id='title-bar'><h4>
<button id='section-type-button' type='button' class='LC_ActivityBarButton ui-helper-reset ui-state-default ui-corner-all'>
	<img src='/adm/lonIcons/text-rich.png' title='Rich Text Section'/>
</button>
<span id='section-title-text'>Title Goes Here</span>
</h4>
</div>");
}	

sub print_context_bar {
	my ($r, $data_ref, $target, $allowed, $default_rich_text, $group) = @_;
	$r->print("<div id='context-bar'>
<button id='add-section-button' type='button' class='LC_ActivityBarButton LC_ActivityBarButton-IconLeft ui-state-default ui-corner-all'>
	<span class='ui-icon ui-icon-triangle-1-n'></span><a href='#'>Move&nbsp;Up</a>
</button>
<button id='add-section-button' type='button' class='LC_ActivityBarButton LC_ActivityBarButton-IconLeft ui-state-default ui-corner-all'>
	<span class='ui-icon ui-icon-triangle-1-s'></span><a href='#'>Move&nbsp;Down</a>
</button>
<button id='add-section-button' type='button' class='LC_ActivityBarButton LC_ActivityBarButton-IconLeft ui-state-default ui-corner-all'>
	<span class='ui-icon ui-icon-pencil'></span><a href='#'>Rename</a>
</button>
<button id='add-section-button' type='button' class='LC_ActivityBarButton LC_ActivityBarButton-IconLeft ui-state-default ui-corner-all'>
	<span class='ui-icon ui-icon-closethick'></span><a href='#'>Delete</a>
</button>
</div>");
}

sub print_field_sortable {
	my ($r, $data_ref, $target, $allowed, $default_rich_text, $group) = @_;
	my %data = %{$data_ref};
	my @fields = @{thaw($data{'data.fields'})};
	$r->print("<div id='scrollable-fields-container'>
<div id='syllabus-fields-container'>
<ui id='syllabus-fields' class='LC_Sortable LC_SyllabusFields'>\n");
	foreach my $key (@fields) {
		my %field = %{thaw($data{'data.field.'.$key})};
		$r->print("<li id='title-$key' class='ui-state-default LC_EllipseOverflow' title='$field{title}'><span class='ui-icon ui-icon-arrowthick-2-n-s left'></span><span id='remove-$key' class='RemoveSection right ui-icon ui-icon-closethick' title='Delete'></span>$field{title}</li>\n");
	}
	$r->print("
</ui>
</div>
<div id='syllabus-fields-actions'>
<button id='add-section-button' type='button' class='LC_ActivityBarButton LC_ActivityBarButton-IconLeft ui-state-default ui-corner-all'>
	<span class='ui-icon ui-icon-circle-plus'></span><a href='#'>Add&nbsp;Section</a>
</button>
<button id='revert-order-button' type='button' class='LC_ActivityBarButton LC_ActivityBarButton-IconLeft ui-state-default ui-corner-all'>
	<span class='ui-icon ui-icon-arrowreturnthick-1-w'></span><a href='#'>Revert&nbsp;Order</a>
</button>
</div>
</div>\n");
}	

sub print_template_new_fields {
	my ($r, $data_ref, $target, $allowed, $default_rich_text, $custom_handlers_ref, $group) = @_;
	my @html_ids = ();
	my %data = %{$data_ref};
	my @fields = @{thaw($data{'data.fields'})};
	my %custom_handlers = %{$custom_handlers_ref};

	foreach my $key (@fields) {
		my %field = %{thaw($data{'data.field.'.$key})};
		my $title = $field{title};
		my $raw_message = $field{content};
		my $type = $field{type};
		my $message = $raw_message if (($raw_message=~/\w/) || ($allowed));
		if ((%custom_handlers) && exists($custom_handlers{$type})) {
			#$custom_handlers{$type}->($r, $field, $json_ref, $group, $target, $allowed);
		} else {
			if (($raw_message=~/\w/) || ($allowed)) {
				if (!&Apache::lonfeedback::contains_block_html($message)) {
					&Apache::lonfeedback::newline_to_br(\$message);
				} else {
					$message = &Apache::lonfeedback::tidy_html($message);
				}
				$message=&Apache::lonhtmlcommon::raw_href_to_link($message);
				if ($allowed) {
					$message=&Apache::lonspeller::markeduptext($message);
				}
				$message=&Apache::lontexconvert::msgtexconverted($message);
				if ($target ne 'tex') {
					#output of syllabusfields will be generated here. 
					&Apache::lontemplate::print_start_template($r,$title,'LC_Box', 'box-'.$key);
					#$r->print($message);
					if ($allowed) {
						$r->print("<div>");
						&Apache::lontemplate::print_textarea_template($r, $raw_message,
							$key, $default_rich_text);
# 						&Apache::lontemplate::print_saveall_template($r);
# 						if (!exists($data{'properties.v2_converted'})) {
# 							$r->print("<a href='?delete=$key&forceedit=1'>Delete</a> ");
# 							$r->print("<a href='?rename=$key&forceedit=1'>Rename to \"Hello, World!\"</a>");
# 						}
						$r->print("</div>");
					} 
					&Apache::lontemplate::print_end_template($r);
				} else {
				    my $safeinit;
                    $r->print(&Apache::lonxml::xmlparse($r,'tex','<h3>'.$title.'</h3>'));
                    $r->print(&Apache::lonxml::xmlparse($r,'tex',$message));
				}
				push(@html_ids,"hello");
			}
		} 
	}
	
	return @html_ids;	
}

sub convert_from_v2 {
	my ($r, $data_ref, $fields_ref, $conflict) = @_;
	my %data = %{$data_ref};
	my %fields = %{$fields_ref};
	my @fields_order = (!$conflict) ? () : @{thaw($data{'data.fields'})};
	my %old_new_map = (!$conflict) ? () : %{thaw($data{'data.old_new_map'})};
	my $repeat_int = 0;  #ensure fields with created timestamp are unique
	foreach my $element (sort(keys(%fields))) {
		my %new_element = ();
		my $title = $fields{$element};
		my $title_hash = time."_".$$;
		if (exists($data{'data.field.'.$title_hash})) {
			$title_hash .= "_".$repeat_int++;
		}
		my $content = $data{$element};
		$new_element{title} = $title;
		$new_element{content} = $content;
		if ($element eq 'lll_includeurl') {
			$new_element{type} = TYPE_URL_INCLUDE;
		} else {
			$new_element{type} = TYPE_TEXT_HTML;
		}
		if (!$conflict) {
			$r->print("Creating new field with ID: ".$title_hash."<br />");
			$data{'data.field.'.$title_hash} = freeze(\%new_element);
			$old_new_map{$element} = $title_hash;
			push(@fields_order, $title_hash);
		} else {
			if (exists($old_new_map{$element})) {
				$r->print("Transferring old field ".$element." to new ID: ".$old_new_map{$element}."<br />");
				if (exists($data{'data.field.'.$old_new_map{$element}})) {
					my %new_field = %{thaw($data{'data.field.'.$old_new_map{$element}})};
					$new_field{content} = $content;
					$data{'data.field.'.$old_new_map{$element}} = freeze(\%new_field);
				}
			} else {
				$data{'data.field.'.$title_hash} = freeze(\%new_element);
				$old_new_map{$element} = $title_hash;
				$data{'properties.v2_conflict_fail'} = 1;
				push(@fields_order, $title_hash);
			}
		}
	}
	$data{'data.fields'} = freeze(\@fields_order);
	$data{'data.old_new_map'} = freeze(\%old_new_map);
	$data{'properties.last_modified'} = time;
	$data{'properties.v2_converted'} = 1;
	$data{'properties.type'} = 'syllabus';
	
	return \%data;
}

1;
__END__

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>