# The LearningOnline Network with CAPA # Navigate Maps Handler # # $Id: lonnavdisplay.pm,v 1.10.4.1 2010/02/14 21:53:02 raeburn 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::lonnavdisplay; use strict; use Apache::Constants qw(:common :http); use Apache::lonmenu(); use Apache::loncommon(); use Apache::lonnavmaps(); use Apache::lonhtmlcommon(); use Apache::lonnet; use Apache::lonlocal; use Time::HiRes qw( gettimeofday tv_interval ); sub handler { my $r = shift; real_handler($r); } sub real_handler { my $r = shift; #my $t0=[&gettimeofday()]; # Handle header-only request if ($r->header_only) { if ($env{'browser.mathml'}) { &Apache::loncommon::content_type($r,'text/xml'); } else { &Apache::loncommon::content_type($r,'text/html'); } $r->send_http_header; return OK; } # Send header, don't cache this page if ($env{'browser.mathml'}) { &Apache::loncommon::content_type($r,'text/xml'); } else { &Apache::loncommon::content_type($r,'text/html'); } &Apache::loncommon::no_cache($r); my %toplinkitems=(); &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'blank','', "Select Action"); if ($ENV{QUERY_STRING} eq 'collapseExternal') { &Apache::lonnet::put('environment',{'remotenavmap' => 'off'}); &Apache::lonnet::appenv({'environment.remotenavmap' => 'off'}); my $menu=&Apache::lonmenu::reopenmenu(); my $navstatus=&Apache::lonmenu::get_nav_status(); if ($menu) { $menu=(<
'); $r->print(' '); } if ($env{'environment.remotenavmap'} ne 'on') { $r->print(&launch_win('link','yes',\%toplinkitems)); } if ($env{'environment.remotenavmap'} eq 'on') { &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'closenav', 'collapse()', "Close navigation window"); } # Check to see if the student is jumping to next open, do-able problem if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) { # Find the next homework problem that they can do. my $iterator = $navmap->getIterator(undef, undef, undef, 1); my $curRes; my $foundDoableProblem = 0; my $minimumduedate; my $now = time(); while ($curRes = $iterator->next()) { if (ref($curRes) && $curRes->is_problem()) { my $status = $curRes->status(); my $thisduedate=$curRes->duedate(); if ($thisduedate > $now && $curRes->completable()) { $foundDoableProblem = 1; if (!defined($minimumduedate) || $thisduedate<$minimumduedate) { # Pop open all previous maps my $stack = $iterator->getStack(); pop @$stack; # last resource in the stack is the problem # itself, which we don't need in the map stack my @mapPcs = map {$_->map_pc()} @$stack; $env{'form.filter'} = join(',', @mapPcs); # Mark as both "here" and "jump" $env{'form.postsymb'} = $curRes->symb(); $minimumduedate=$thisduedate; } } } } # If we found no problems, print a note to that effect. if (!$foundDoableProblem) { $r->print("" .&mt("All homework assignments have been completed.") .""); } } else { &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'firsthomework', 'location.href="navmaps?jumpToFirstHomework"', "Show my first due problem"); } my $suppressEmptySequences = 0; my $filterFunc = undef; my $resource_no_folder_link = 0; # Display only due homework. my $showOnlyHomework = 0; if ($env{'form.showOnlyHomework'} eq "1") { $showOnlyHomework = 1; $suppressEmptySequences = 1; $filterFunc = sub { my $res = shift; return $res->completable() || $res->is_map(); }; &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'everything', 'location.href="navmaps?sort='.$env{'form.sort'}.'"', "Show everything"); $r->print("".&mt("Uncompleted Problems").""); $env{'form.filter'} = ''; $env{'form.condition'} = 1; $resource_no_folder_link = 1; } else { &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'uncompleted', 'location.href="navmaps?sort='.$env{'form.sort'}. '&showOnlyHomework=1"', "Show only uncompleted problems"); } my %selected=($env{'form.sort'} => ' selected="selected"'); my $sort_html=(""); # renderer call my $renderArgs = { 'cols' => [0,1,2,3], 'sort' => $env{'form.sort'}, 'url' => '/adm/navmaps', 'navmap' => $navmap, 'suppressNavmap' => 1, 'suppressEmptySequences' => $suppressEmptySequences, 'filterFunc' => $filterFunc, 'resource_no_folder_link' => $resource_no_folder_link, 'sort_html'=> $sort_html, 'r' => $r, 'caller' => 'navmapsdisplay', 'linkitems' => \%toplinkitems}; my $render = &Apache::lonnavmaps::render($renderArgs); # If no resources were printed, print a reassuring message so the # user knows there was no error. if ($renderArgs->{'counter'} == 0) { if ($showOnlyHomework) { $r->print("".&mt("All homework is currently completed.")."
"); } else { # both jumpToFirstHomework and normal use the same: course must be empty $r->print("".&mt("This course is empty.")."
"); } } #my $td=&tv_interval($t0); #$r->print("The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.