1: # The LearningOnline Network with CAPA
2: # Navigate Maps Display Handler
3: #
4: # $Id: lonnavdisplay.pm,v 1.22.4.5 2014/05/22 12:25:32 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: package Apache::lonnavdisplay;
31:
32: use strict;
33: use Apache::Constants qw(:common :http REDIRECT);
34: use Apache::lonmenu();
35: use Apache::loncommon();
36: use Apache::lonnavmaps();
37: use Apache::lonhtmlcommon();
38: use Apache::lonnet;
39: use Apache::lonlocal;
40: use Apache::londocs();
41: #use Time::HiRes qw( gettimeofday tv_interval );
42:
43: sub handler {
44: my $r = shift;
45: real_handler($r);
46: }
47:
48: sub real_handler {
49: my $r = shift;
50: #my $t0=[&gettimeofday()];
51: # Handle header-only request
52: if ($r->header_only) {
53: if ($env{'browser.mathml'}) {
54: &Apache::loncommon::content_type($r,'text/xml');
55: } else {
56: &Apache::loncommon::content_type($r,'text/html');
57: }
58: $r->send_http_header;
59: return OK;
60: }
61:
62: # Check for critical messages and redirect if present.
63: my ($redirect,$url) = &Apache::loncommon::critical_redirect(300);
64: if ($redirect) {
65: &Apache::loncommon::content_type($r,'text/html');
66: $r->header_out(Location => $url);
67: return REDIRECT;
68: }
69:
70: # Send header, don't cache this page
71: if ($env{'browser.mathml'}) {
72: &Apache::loncommon::content_type($r,'text/xml');
73: } else {
74: &Apache::loncommon::content_type($r,'text/html');
75: }
76: &Apache::loncommon::no_cache($r);
77:
78: my %toplinkitems=();
79:
80: # Create the nav map
81: my $navmap = Apache::lonnavmaps::navmap->new();
82:
83: if (!defined($navmap)) {
84: my $requrl = $r->uri;
85: $env{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";
86: $env{'user.reinit'} = 1;
87: return HTTP_NOT_ACCEPTABLE;
88: }
89: $r->send_http_header;
90:
91: # ------------------------------------------------------------ Get query string
92: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['sort','showOnlyHomework','postsymb','register']);
93:
94: # ----------------------------------------------------- Force menu registration
95: # Header
96: my $course_type = &Apache::loncommon::course_type();
97: my $title = $course_type . ' Contents';
98: my ($start_page,$args);
99: if ($env{'form.register'}) {
100: $args = {'force_register' => $env{'form.register'}};
101: $start_page = &Apache::loncommon::start_page($title,undef,$args);
102: } else {
103: my $brcrum = [{href => '/adm/navmaps',
104: text => &mt($course_type . ' Contents'),
105: no_mt => 1},
106: ];
107: $args = {'bread_crumbs' => $brcrum};
108: $start_page = &Apache::loncommon::start_page($title,undef,$args);
109: }
110: $r->print($start_page.
111: '<script type="text/javascript">window.focus();</script>');
112: &startContentScreen($r,'navmaps');
113: $r->rflush();
114:
115: # Check that it's defined
116: if (!($navmap->courseMapDefined())) {
117: $r->print(&Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT'));
118: $r->print('<span class="LC_error">'.&mt('Coursemap undefined.').
119: '</span>' .
120: &Apache::loncommon::end_page());
121: return OK;
122: }
123:
124: my @resources = $navmap->retrieveResources();
125: my $sequenceCount = 0;
126: my $problemCount = 0;
127: my $notaprobCount = 0;
128: my $sequenceId;
129: my $notools;
130: foreach my $curRes (@resources) {
131: if (ref($curRes)) {
132: if ($curRes->is_sequence()) {
133: $sequenceCount++;
134: $sequenceId = $curRes->map_pc();
135: } elsif ($curRes->is_problem()) {
136: $problemCount ++;
137: } else {
138: $notaprobCount ++;
139: }
140: }
141: }
142: if (($sequenceCount == 1) && (!$problemCount) && ($notaprobCount <= 1)) {
143: $notools = 1;
144: }
145:
146: # If there's only one map in the top-level and we don't
147: # already have a filter, automatically display it
148: if ($ENV{QUERY_STRING} !~ /filter/) {
149: if ($sequenceCount == 1) {
150: # The automatic iterator creation in the render call
151: # will pick this up. We know the condition because
152: # the defined($env{'form.filter'}) also ensures this
153: # is a fresh call.
154: $env{'form.filter'} = "$sequenceId";
155: }
156: }
157:
158: # Check to see if the student is jumping to next open, do-able problem
159: if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) {
160: # Find the next homework problem that they can do.
161: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
162: my $curRes;
163: my $foundDoableProblem = 0;
164: my $minimumduedate;
165: my $now = time();
166:
167: while ($curRes = $iterator->next()) {
168: if (ref($curRes) && $curRes->is_problem()) {
169: my $status = $curRes->status();
170: my $thisduedate=$curRes->duedate();
171: if ($thisduedate > $now
172: && $curRes->completable()) {
173:
174: $foundDoableProblem = 1;
175:
176: if (!defined($minimumduedate)
177: || $thisduedate<$minimumduedate) {
178: # Pop open all previous maps
179: my $stack = $iterator->getStack();
180: pop @$stack; # last resource in the stack is the problem
181: # itself, which we don't need in the map stack
182: my @mapPcs = map {$_->map_pc()} @$stack;
183: $env{'form.filter'} = join(',', @mapPcs);
184:
185: # Mark as both "here" and "jump"
186: $env{'form.postsymb'} = $curRes->symb();
187: $minimumduedate=$thisduedate;
188: }
189: }
190: }
191: }
192:
193: # If we found no problems, print a note to that effect.
194: if (!$foundDoableProblem) {
195: $r->print("<span class=\"LC_info\">"
196: .&mt("All homework assignments have been completed.")
197: ."</span>");
198: }
199: } else {
200: my $link = 'navmaps?jumpToFirstHomework';
201: if ($env{'form.register'}) {
202: $link .= '&register='.$env{'form.register'};
203: }
204: unless ($notools) {
205: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'firsthomework',
206: 'location.href="'.$link.'"',
207: "Show my first due problem");
208: }
209: }
210:
211: my $suppressEmptySequences = 0;
212: my $filterFunc = undef;
213: my $resource_no_folder_link = 0;
214:
215: # Display only due homework.
216: my $showOnlyHomework = 0;
217: if ($env{'form.showOnlyHomework'} eq "1") {
218: $showOnlyHomework = 1;
219: $suppressEmptySequences = 1;
220: $filterFunc = sub { my $res = shift;
221: return $res->completable() || $res->is_map();
222: };
223: my $link = 'navmaps?sort='.$env{'form.sort'};
224: if ($env{'form.register'}) {
225: $link .= '&register='.$env{'form.register'};
226: }
227: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'everything',
228: 'location.href="'.$link.'"',
229: 'Show everything');
230: $r->print("<span class=\"LC_info\">".&mt("Uncompleted Problems")."</span>");
231: $env{'form.filter'} = '';
232: $env{'form.condition'} = 1;
233: $resource_no_folder_link = 1;
234: } else {
235: my $link = 'navmaps?sort='.$env{'form.sort'}.'&showOnlyHomework=1';
236: if ($env{'form.register'}) {
237: $link .= '&register='.$env{'form.register'};
238: }
239: unless ($notools) {
240: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'uncompleted',
241: 'location.href="'.$link.'"',
242: 'Show only uncompleted problems');
243: }
244: }
245:
246: my %selected=($env{'form.sort'} => ' selected="selected"');
247: my $sort_html;
248: unless ($notools) {
249: $sort_html=(
250: '<form name="sortForm" action="">
251: <span class="LC_nobreak">
252: <input type="hidden" name="showOnlyHomework" value="'.$env{'form.showOnlyHomework'}.'" />
253: '.&mt('Sort by:').'
254: <select name="sort" onchange="document.sortForm.submit()">
255: <option value="default"'.$selected{'default'}.'>'.&mt('Default').'</option>
256: <option value="title"'.$selected{'title'}.'>'.&mt('Title').'</option>
257: <option value="duedate"'.$selected{'duedate'}.'>'.&mt('Due Date').'</option>
258: <option value="discussion"'.$selected{'discussion'}.'>'.&mt('Has New Discussion').'</option>
259: </select>
260: <input type="hidden" name="register" value="'.$env{'form.register'}.'" />
261: </span>
262: </form>');
263: }
264: # renderer call
265: my $renderArgs = { 'cols' => [0,1,2,3],
266: 'sort' => $env{'form.sort'},
267: 'url' => '/adm/navmaps',
268: 'navmap' => $navmap,
269: 'suppressNavmap' => 1,
270: 'suppressEmptySequences' => $suppressEmptySequences,
271: 'filterFunc' => $filterFunc,
272: 'resource_no_folder_link' => $resource_no_folder_link,
273: 'sort_html'=> $sort_html,
274: 'r' => $r,
275: 'caller' => 'navmapsdisplay',
276: 'linkitems' => \%toplinkitems,
277: 'notools' => $notools};
278:
279: my $render = &Apache::lonnavmaps::render($renderArgs);
280:
281: # If no resources were printed, print a reassuring message so the
282: # user knows there was no error.
283: if ($renderArgs->{'counter'} == 0) {
284: if ($showOnlyHomework) {
285: $r->print("<p><span class=\"LC_info\">".&mt("All homework is currently completed.")."</span></p>");
286: } else { # both jumpToFirstHomework and normal use the same: course must be empty
287: $r->print("<p><span class=\"LC_info\">".&mt("This course is empty.")."</span></p>");
288: }
289: }
290: #my $td=&tv_interval($t0);
291: #$r->print("<br />$td");
292: &endContentScreen($r);
293: $r->print(&Apache::loncommon::end_page());
294: $r->rflush();
295:
296: return OK;
297: }
298:
299: sub startContentScreen {
300: my ($r,$mode)=@_;
301:
302: $r->print("\n".'<ul class="LC_TabContentBigger" id="mainnav">'."\n");
303: $r->print('<li'.(($mode eq 'navmaps')?' class="active"':'').'><a href="/adm/navmaps"><b> '.&mt('Main Content').' </b></a></li>'."\n");
304: my $allowed = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
305: my ($suppcount,$errors);
306: unless ($allowed) {
307: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
308: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
309: ($suppcount,$errors) = &Apache::lonnet::get_numsuppfiles($cnum,$cdom);
310: }
311: if ($allowed || $suppcount) {
312: $r->print('<li '.(($mode eq 'supplemental')?' class="active"':'').'><a href="/adm/supplemental"><b>'.&mt('Supplemental Content').'</b></a></li>');
313: }
314: $r->print('<li'.(($mode eq 'coursesearch')?' class="active"':'').'><a href="/adm/searchcourse"><b> '.&mt('Content Search').' </b></a></li>'."\n");
315: $r->print("\n".'</ul>'."\n");
316: $r->print('<div class="LC_Box" style="clear:both;margin:0;"><div id="maincoursedoc" style="margin:0 0;padding:0 0;"><div class="LC_ContentBox" id="mainCourseDocuments" style="display: block;">');
317: }
318:
319: sub endContentScreen {
320: my ($r)=@_;
321: $r->print('</div></div></div>');
322: }
323:
324: 1;
325: __END__
326:
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