1: # The LearningOnline Network with CAPA
2: # Navigate Maps Display Handler
3: #
4: # $Id: lonnavdisplay.pm,v 1.22.4.7 2017/04/02 13:35:30 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 Apache::lonuserstate;
42:
43: sub handler {
44: my $r = shift;
45: real_handler($r);
46: }
47:
48: sub real_handler {
49: my $r = shift;
50: # Handle header-only request
51: if ($r->header_only) {
52: &Apache::loncommon::content_type($r,'text/html');
53: $r->send_http_header;
54: return OK;
55: }
56:
57: # Check for critical messages and redirect if present.
58: my ($redirect,$url) = &Apache::loncommon::critical_redirect(300);
59: if ($redirect) {
60: &Apache::loncommon::content_type($r,'text/html');
61: $r->header_out(Location => $url);
62: return REDIRECT;
63: }
64:
65: # Check if course needs to be re-initialized
66: my $loncaparev = $r->dir_config('lonVersion');
67: my ($result,@reinit) = &Apache::loncommon::needs_coursereinit($loncaparev);
68:
69: if ($result eq 'switch') {
70: &Apache::loncommon::content_type($r,'text/html');
71: $r->send_http_header;
72: $r->print(&Apache::loncommon::check_release_result(@reinit));
73: return OK;
74: } elsif ($result eq 'update') {
75: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
76: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
77: my ($furl,$ferr) = &Apache::lonuserstate::readmap("$cdom/$cnum");
78: if ($ferr) {
79: my $requrl = $r->uri;
80: $env{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
81: $env{'user.reinit'} = 1;
82: return HTTP_NOT_ACCEPTABLE;
83: }
84: }
85:
86: # Create the nav map
87: my $navmap = Apache::lonnavmaps::navmap->new();
88:
89: if (!defined($navmap)) {
90: my $requrl = $r->uri;
91: $env{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";
92: $env{'user.reinit'} = 1;
93: return HTTP_NOT_ACCEPTABLE;
94: }
95:
96: # Send header, don't cache this page
97: &Apache::loncommon::content_type($r,'text/html');
98: $r->send_http_header;
99:
100: # ------------------------------------------------------------ Get query string
101: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['sort','showOnlyHomework','postsymb','register']);
102:
103: # ----------------------------------------------------- Force menu registration
104: # Header
105: my $course_type = &Apache::loncommon::course_type();
106: my $title = $course_type . ' Contents';
107: my ($start_page,$args);
108: if ($env{'form.register'}) {
109: $args = {'force_register' => $env{'form.register'}};
110: $start_page = &Apache::loncommon::start_page($title,undef,$args);
111: } else {
112: my $brcrum = [{href => '/adm/navmaps',
113: text => &mt($course_type . ' Contents'),
114: no_mt => 1},
115: ];
116: $args = {'bread_crumbs' => $brcrum};
117: $start_page = &Apache::loncommon::start_page($title,undef,$args);
118: }
119: $r->print($start_page.
120: '<script type="text/javascript">window.focus();</script>');
121: &startContentScreen($r,'navmaps');
122: $r->rflush();
123:
124: # Check that it's defined
125: if (!($navmap->courseMapDefined())) {
126: $r->print(&Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT'));
127: $r->print('<span class="LC_error">'.&mt('Coursemap undefined.').
128: '</span>' .
129: &Apache::loncommon::end_page());
130: return OK;
131: }
132:
133: my %toplinkitems=();
134: my @resources = $navmap->retrieveResources();
135: my $sequenceCount = 0;
136: my $problemCount = 0;
137: my $notaprobCount = 0;
138: my $sequenceId;
139: my $notools;
140: foreach my $curRes (@resources) {
141: if (ref($curRes)) {
142: if ($curRes->is_sequence()) {
143: $sequenceCount++;
144: $sequenceId = $curRes->map_pc();
145: } elsif ($curRes->is_problem()) {
146: $problemCount ++;
147: } else {
148: $notaprobCount ++;
149: }
150: }
151: }
152: if (($sequenceCount == 1) && (!$problemCount) && ($notaprobCount <= 1)) {
153: $notools = 1;
154: }
155:
156: # If there's only one map in the top-level and we don't
157: # already have a filter, automatically display it
158: if ($ENV{QUERY_STRING} !~ /filter/) {
159: if ($sequenceCount == 1) {
160: # The automatic iterator creation in the render call
161: # will pick this up. We know the condition because
162: # the defined($env{'form.filter'}) also ensures this
163: # is a fresh call.
164: $env{'form.filter'} = "$sequenceId";
165: }
166: }
167:
168: # Check to see if the student is jumping to next open, do-able problem
169: if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) {
170: # Find the next homework problem that they can do.
171: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
172: my $curRes;
173: my $foundDoableProblem = 0;
174: my $minimumduedate;
175: my $now = time();
176:
177: while ($curRes = $iterator->next()) {
178: if (ref($curRes) && $curRes->is_problem()) {
179: my $status = $curRes->status();
180: my $thisduedate=$curRes->duedate();
181: if ($thisduedate > $now
182: && $curRes->completable()) {
183:
184: $foundDoableProblem = 1;
185:
186: if (!defined($minimumduedate)
187: || $thisduedate<$minimumduedate) {
188: # Pop open all previous maps
189: my $stack = $iterator->getStack();
190: pop @$stack; # last resource in the stack is the problem
191: # itself, which we don't need in the map stack
192: my @mapPcs = map {$_->map_pc()} @$stack;
193: $env{'form.filter'} = join(',', @mapPcs);
194:
195: # Mark as both "here" and "jump"
196: $env{'form.postsymb'} = $curRes->symb();
197: $minimumduedate=$thisduedate;
198: }
199: }
200: }
201: }
202:
203: # If we found no problems, print a note to that effect.
204: if (!$foundDoableProblem) {
205: $r->print("<span class=\"LC_info\">"
206: .&mt("All homework assignments have been completed.")
207: ."</span>");
208: }
209: } else {
210: my $link = 'navmaps?jumpToFirstHomework';
211: if ($env{'form.register'}) {
212: $link .= '&register='.$env{'form.register'};
213: }
214: unless ($notools) {
215: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'firsthomework',
216: 'location.href="'.$link.'"',
217: "Show my first due problem");
218: }
219: }
220:
221: my $suppressEmptySequences = 0;
222: my $filterFunc = undef;
223: my $resource_no_folder_link = 0;
224:
225: # Display only due homework.
226: my $showOnlyHomework = 0;
227: if ($env{'form.showOnlyHomework'} eq "1") {
228: $showOnlyHomework = 1;
229: $suppressEmptySequences = 1;
230: $filterFunc = sub { my $res = shift;
231: return $res->completable() || $res->is_map();
232: };
233: my $link = 'navmaps?sort='.$env{'form.sort'};
234: if ($env{'form.register'}) {
235: $link .= '&register='.$env{'form.register'};
236: }
237: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'everything',
238: 'location.href="'.$link.'"',
239: 'Show everything');
240: $r->print("<span class=\"LC_info\">".&mt("Uncompleted Problems")."</span>");
241: $env{'form.filter'} = '';
242: $env{'form.condition'} = 1;
243: $resource_no_folder_link = 1;
244: } else {
245: my $link = 'navmaps?sort='.$env{'form.sort'}.'&showOnlyHomework=1';
246: if ($env{'form.register'}) {
247: $link .= '&register='.$env{'form.register'};
248: }
249: unless ($notools) {
250: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'uncompleted',
251: 'location.href="'.$link.'"',
252: 'Show only uncompleted problems');
253: }
254: }
255:
256: my %selected=($env{'form.sort'} => ' selected="selected"');
257: my $sort_html;
258: unless ($notools) {
259: $sort_html=(
260: '<form name="sortForm" action="">
261: <span class="LC_nobreak">
262: <input type="hidden" name="showOnlyHomework" value="'.$env{'form.showOnlyHomework'}.'" />
263: '.&mt('Sort by:').'
264: <select name="sort" onchange="document.sortForm.submit()">
265: <option value="default"'.$selected{'default'}.'>'.&mt('Default').'</option>
266: <option value="title"'.$selected{'title'}.'>'.&mt('Title').'</option>
267: <option value="duedate"'.$selected{'duedate'}.'>'.&mt('Due Date').'</option>
268: <option value="discussion"'.$selected{'discussion'}.'>'.&mt('Has New Discussion').'</option>
269: </select>
270: <input type="hidden" name="register" value="'.$env{'form.register'}.'" />
271: </span>
272: </form>');
273: }
274: # renderer call
275: my $renderArgs = { 'cols' => [0,1,2,3],
276: 'sort' => $env{'form.sort'},
277: 'url' => '/adm/navmaps',
278: 'navmap' => $navmap,
279: 'suppressNavmap' => 1,
280: 'suppressEmptySequences' => $suppressEmptySequences,
281: 'filterFunc' => $filterFunc,
282: 'resource_no_folder_link' => $resource_no_folder_link,
283: 'sort_html'=> $sort_html,
284: 'r' => $r,
285: 'caller' => 'navmapsdisplay',
286: 'linkitems' => \%toplinkitems,
287: 'notools' => $notools};
288:
289: my $render = &Apache::lonnavmaps::render($renderArgs);
290:
291: # If no resources were printed, print a reassuring message so the
292: # user knows there was no error.
293: if ($renderArgs->{'counter'} == 0) {
294: if ($showOnlyHomework) {
295: $r->print("<p><span class=\"LC_info\">".&mt("All homework is currently completed.")."</span></p>");
296: } else { # both jumpToFirstHomework and normal use the same: course must be empty
297: $r->print("<p><span class=\"LC_info\">".&mt("This course is empty.")."</span></p>");
298: }
299: }
300: &endContentScreen($r);
301: $r->print(&Apache::loncommon::end_page());
302: $r->rflush();
303:
304: return OK;
305: }
306:
307: sub startContentScreen {
308: my ($r,$mode)=@_;
309:
310: $r->print("\n".'<ul class="LC_TabContentBigger" id="mainnav">'."\n");
311: $r->print('<li'.(($mode eq 'navmaps')?' class="active"':'').'><a href="/adm/navmaps"><b> '.&mt('Main Content').' </b></a></li>'."\n");
312: my $allowed = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
313: my ($suppcount,$errors);
314: unless ($allowed) {
315: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
316: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
317: ($suppcount,$errors) = &Apache::lonnet::get_numsuppfiles($cnum,$cdom);
318: }
319: if ($allowed || $suppcount) {
320: $r->print('<li '.(($mode eq 'supplemental')?' class="active"':'').'><a href="/adm/supplemental"><b>'.&mt('Supplemental Content').'</b></a></li>');
321: }
322: $r->print('<li'.(($mode eq 'coursesearch')?' class="active"':'').'><a href="/adm/searchcourse"><b> '.&mt('Content Search').' </b></a></li>'."\n");
323: $r->print("\n".'</ul>'."\n");
324: $r->print('<div class="LC_Box" style="clear:both;margin:0;"><div id="maincoursedoc" style="margin:0 0;padding:0 0;"><div class="LC_ContentBox" id="mainCourseDocuments" style="display: block;">');
325: }
326:
327: sub endContentScreen {
328: my ($r)=@_;
329: $r->print('</div></div></div>');
330: }
331:
332: 1;
333: __END__
334:
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