Annotation of loncom/interface/lonnavdisplay.pm, revision 1.22.4.1
1.1 albertel 1: # The LearningOnline Network with CAPA
2: # Navigate Maps Handler
3: #
1.22.4.1! raeburn 4: # $Id: lonnavdisplay.pm,v 1.22 2012/01/02 23:10:58 www Exp $
1.1 albertel 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);
34: use Apache::lonmenu();
35: use Apache::loncommon();
36: use Apache::lonnavmaps();
37: use Apache::lonhtmlcommon();
38: use Apache::lonnet;
39: use Apache::lonlocal;
1.19 www 40: use Apache::londocs();
1.2 albertel 41: use Time::HiRes qw( gettimeofday tv_interval );
1.1 albertel 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: $r->send_http_header;
59: return OK;
60: }
61:
62: # Send header, don't cache this page
63: if ($env{'browser.mathml'}) {
64: &Apache::loncommon::content_type($r,'text/xml');
65: } else {
66: &Apache::loncommon::content_type($r,'text/html');
67: }
68: &Apache::loncommon::no_cache($r);
69:
70: my %toplinkitems=();
71:
72: # Create the nav map
73: my $navmap = Apache::lonnavmaps::navmap->new();
74:
75: if (!defined($navmap)) {
76: my $requrl = $r->uri;
77: $env{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";
1.5 raeburn 78: $env{'user.reinit'} = 1;
1.1 albertel 79: return HTTP_NOT_ACCEPTABLE;
80: }
81: $r->send_http_header;
82:
83: # ------------------------------------------------------------ Get query string
1.17 raeburn 84: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['sort','showOnlyHomework','postsymb','register']);
1.1 albertel 85:
86: # ----------------------------------------------------- Force menu registration
87: # Header
88: my $course_type = &Apache::loncommon::course_type();
1.15 droeschl 89: my $title = $course_type . ' Contents';
1.17 raeburn 90: my ($start_page,$args);
91: if ($env{'form.register'}) {
92: $args = {'force_register' => $env{'form.register'}};
93: $start_page = &Apache::loncommon::start_page($title,undef,$args);
94: } else {
95: my $brcrum = [{href => '/adm/navmaps',
96: text => &mt($course_type . ' Contents'),
97: no_mt => 1},
98: ];
99: $args = {'bread_crumbs' => $brcrum};
100: $start_page = &Apache::loncommon::start_page($title,undef,$args);
101: }
102: $r->print($start_page.
103: '<script type="text/javascript">window.focus();</script>');
1.20 raeburn 104: &startContentScreen($r,'navmaps');
1.1 albertel 105: $r->rflush();
106:
107: # Check that it's defined
108: if (!($navmap->courseMapDefined())) {
109: $r->print(&Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT'));
110: $r->print('<span class="LC_error">'.&mt('Coursemap undefined.').
111: '</span>' .
112: &Apache::loncommon::end_page());
113: return OK;
114: }
115:
1.21 raeburn 116: my @resources = $navmap->retrieveResources();
117: my $sequenceCount = 0;
118: my $problemCount = 0;
119: my $notaprobCount = 0;
120: my $sequenceId;
121: my $notools;
122: foreach my $curRes (@resources) {
123: if (ref($curRes)) {
124: if ($curRes->is_sequence()) {
1.1 albertel 125: $sequenceCount++;
126: $sequenceId = $curRes->map_pc();
1.21 raeburn 127: } elsif ($curRes->is_problem()) {
128: $problemCount ++;
129: } else {
130: $notaprobCount ++;
1.1 albertel 131: }
132: }
1.21 raeburn 133: }
134: if (($sequenceCount == 1) && (!$problemCount) && ($notaprobCount <= 1)) {
135: $notools = 1;
136: }
137:
138: # If there's only one map in the top-level and we don't
139: # already have a filter, automatically display it
140: if ($ENV{QUERY_STRING} !~ /filter/) {
1.1 albertel 141: if ($sequenceCount == 1) {
142: # The automatic iterator creation in the render call
143: # will pick this up. We know the condition because
144: # the defined($env{'form.filter'}) also ensures this
145: # is a fresh call.
146: $env{'form.filter'} = "$sequenceId";
147: }
148: }
149:
150: # Check to see if the student is jumping to next open, do-able problem
151: if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) {
152: # Find the next homework problem that they can do.
153: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
154: my $curRes;
155: my $foundDoableProblem = 0;
156: my $minimumduedate;
1.2 albertel 157: my $now = time();
158:
1.1 albertel 159: while ($curRes = $iterator->next()) {
160: if (ref($curRes) && $curRes->is_problem()) {
161: my $status = $curRes->status();
1.2 albertel 162: my $thisduedate=$curRes->duedate();
163: if ($thisduedate > $now
164: && $curRes->completable()) {
1.1 albertel 165:
166: $foundDoableProblem = 1;
167:
1.2 albertel 168: if (!defined($minimumduedate)
169: || $thisduedate<$minimumduedate) {
1.1 albertel 170: # Pop open all previous maps
171: my $stack = $iterator->getStack();
172: pop @$stack; # last resource in the stack is the problem
173: # itself, which we don't need in the map stack
174: my @mapPcs = map {$_->map_pc()} @$stack;
175: $env{'form.filter'} = join(',', @mapPcs);
176:
177: # Mark as both "here" and "jump"
178: $env{'form.postsymb'} = $curRes->symb();
179: $minimumduedate=$thisduedate;
180: }
181: }
182: }
183: }
184:
185: # If we found no problems, print a note to that effect.
186: if (!$foundDoableProblem) {
1.7 schulted 187: $r->print("<span class=\"LC_info\">"
1.4 bisitz 188: .&mt("All homework assignments have been completed.")
1.7 schulted 189: ."</span>");
1.1 albertel 190: }
191: } else {
1.17 raeburn 192: my $link = 'navmaps?jumpToFirstHomework';
193: if ($env{'form.register'}) {
194: $link .= '&register='.$env{'form.register'};
195: }
1.21 raeburn 196: unless ($notools) {
197: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'firsthomework',
198: 'location.href="'.$link.'"',
199: "Show my first due problem");
200: }
1.1 albertel 201: }
202:
203: my $suppressEmptySequences = 0;
204: my $filterFunc = undef;
205: my $resource_no_folder_link = 0;
206:
207: # Display only due homework.
208: my $showOnlyHomework = 0;
209: if ($env{'form.showOnlyHomework'} eq "1") {
210: $showOnlyHomework = 1;
211: $suppressEmptySequences = 1;
212: $filterFunc = sub { my $res = shift;
213: return $res->completable() || $res->is_map();
214: };
1.17 raeburn 215: my $link = 'navmaps?sort='.$env{'form.sort'};
216: if ($env{'form.register'}) {
217: $link .= '&register='.$env{'form.register'};
218: }
1.1 albertel 219: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'everything',
1.17 raeburn 220: 'location.href="'.$link.'"',
221: 'Show everything');
1.7 schulted 222: $r->print("<span class=\"LC_info\">".&mt("Uncompleted Problems")."</span>");
1.1 albertel 223: $env{'form.filter'} = '';
224: $env{'form.condition'} = 1;
225: $resource_no_folder_link = 1;
226: } else {
1.17 raeburn 227: my $link = 'navmaps?sort='.$env{'form.sort'}.'&showOnlyHomework=1';
228: if ($env{'form.register'}) {
229: $link .= '&register='.$env{'form.register'};
230: }
1.21 raeburn 231: unless ($notools) {
232: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'uncompleted',
233: 'location.href="'.$link.'"',
234: 'Show only uncompleted problems');
235: }
1.1 albertel 236: }
237:
1.10 bisitz 238: my %selected=($env{'form.sort'} => ' selected="selected"');
1.21 raeburn 239: my $sort_html;
240: unless ($notools) {
241: $sort_html=(
242: '<form name="sortForm" action="">
1.17 raeburn 243: <span class="LC_nobreak">
244: <input type="hidden" name="showOnlyHomework" value="'.$env{'form.showOnlyHomework'}.'" />
245: '.&mt('Sort by:').'
1.18 bisitz 246: <select name="sort" onchange="document.sortForm.submit()">
1.17 raeburn 247: <option value="default"'.$selected{'default'}.'>'.&mt('Default').'</option>
248: <option value="title"'.$selected{'title'}.'>'.&mt('Title').'</option>
249: <option value="duedate"'.$selected{'duedate'}.'>'.&mt('Duedate').'</option>
250: <option value="discussion"'.$selected{'discussion'}.'>'.&mt('Has New Discussion').'</option>
1.1 albertel 251: </select>
1.17 raeburn 252: <input type="hidden" name="register" value="'.$env{'form.register'}.'" />
1.9 bisitz 253: </span>
1.17 raeburn 254: </form>');
1.21 raeburn 255: }
1.1 albertel 256: # renderer call
257: my $renderArgs = { 'cols' => [0,1,2,3],
258: 'sort' => $env{'form.sort'},
259: 'url' => '/adm/navmaps',
260: 'navmap' => $navmap,
261: 'suppressNavmap' => 1,
262: 'suppressEmptySequences' => $suppressEmptySequences,
263: 'filterFunc' => $filterFunc,
264: 'resource_no_folder_link' => $resource_no_folder_link,
265: 'sort_html'=> $sort_html,
266: 'r' => $r,
267: 'caller' => 'navmapsdisplay',
1.21 raeburn 268: 'linkitems' => \%toplinkitems,
269: 'notools' => $notools};
270:
1.1 albertel 271: my $render = &Apache::lonnavmaps::render($renderArgs);
272:
273: # If no resources were printed, print a reassuring message so the
274: # user knows there was no error.
275: if ($renderArgs->{'counter'} == 0) {
276: if ($showOnlyHomework) {
1.7 schulted 277: $r->print("<p><span class=\"LC_info\">".&mt("All homework is currently completed.")."</span></p>");
1.1 albertel 278: } else { # both jumpToFirstHomework and normal use the same: course must be empty
1.7 schulted 279: $r->print("<p><span class=\"LC_info\">".&mt("This course is empty.")."</span></p>");
1.1 albertel 280: }
281: }
282: #my $td=&tv_interval($t0);
283: #$r->print("<br />$td");
1.20 raeburn 284: &endContentScreen($r);
1.1 albertel 285: $r->print(&Apache::loncommon::end_page());
286: $r->rflush();
287:
288: return OK;
289: }
290:
1.20 raeburn 291: sub startContentScreen {
292: my ($r,$mode)=@_;
293:
294: $r->print("\n".'<ul class="LC_TabContentBigger" id="mainnav">'."\n");
1.22 www 295: $r->print('<li'.(($mode eq 'navmaps')?' class="active"':'').'><a href="/adm/navmaps"><b> '.&mt('Main Content').' </b></a></li>'."\n");
1.20 raeburn 296: $r->print('<li '.(($mode eq 'supplemental')?' class="active"':'').'><a href="/adm/supplemental"><b>'.&mt('Supplemental Content').'</b></a></li>');
297: $r->print('<li'.(($mode eq 'coursesearch')?' class="active"':'').'><a href="/adm/searchcourse"><b> '.&mt('Content Search').' </b></a></li>'."\n");
298: $r->print("\n".'</ul>'."\n");
299: $r->print('<div class="LC_Box" style="clear:both;margin:0;"><div id="maincoursedoc" style="margin:0 0;padding:0 0;"><div class="LC_ContentBox" id="mainCourseDocuments" style="display: block;">');
300: }
301:
302: sub endContentScreen {
303: my ($r)=@_;
304: $r->print('</div></div></div>');
305: }
306:
1.1 albertel 307: 1;
308: __END__
309:
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