Annotation of loncom/interface/lonnavdisplay.pm, revision 1.2
1.1 albertel 1: # The LearningOnline Network with CAPA
2: # Navigate Maps Handler
3: #
1.2 ! albertel 4: # $Id: lonnavdisplay.pm,v 1.1 2006/10/10 20:16:26 albertel 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;
1.2 ! albertel 40: use Time::HiRes qw( gettimeofday tv_interval );
1.1 albertel 41:
42: sub handler {
43: my $r = shift;
44: real_handler($r);
45: }
46:
47: sub real_handler {
48: my $r = shift;
49: #my $t0=[&gettimeofday()];
50: # Handle header-only request
51: if ($r->header_only) {
52: if ($env{'browser.mathml'}) {
53: &Apache::loncommon::content_type($r,'text/xml');
54: } else {
55: &Apache::loncommon::content_type($r,'text/html');
56: }
57: $r->send_http_header;
58: return OK;
59: }
60:
61: # Send header, don't cache this page
62: if ($env{'browser.mathml'}) {
63: &Apache::loncommon::content_type($r,'text/xml');
64: } else {
65: &Apache::loncommon::content_type($r,'text/html');
66: }
67: &Apache::loncommon::no_cache($r);
68:
69: my %toplinkitems=();
70: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'blank','',
71: "Select Action");
72: if ($ENV{QUERY_STRING} eq 'collapseExternal') {
73: &Apache::lonnet::put('environment',{'remotenavmap' => 'off'});
74: &Apache::lonnet::appenv('environment.remotenavmap' => 'off');
75: my $menu=&Apache::lonmenu::reopenmenu();
76: my $navstatus=&Apache::lonmenu::get_nav_status();
77: if ($menu) {
78: $menu=(<<MENU)
79: swmenu=$menu
80: swmenu.clearTimeout(swmenu.menucltim);
81: $navstatus
82: MENU
83: } else {
84: my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
85: my $mainwindow='window.open('.$nothing.',"loncapaclient","",false);';
86: $menu=(<<MENU)
87: swmenu=$mainwindow
88: $navstatus
89: MENU
90: }
91: $r->send_http_header;
92: my $js =<<"ENDSUBM";
93: <script type="text/javascript">
94: function submitthis() {
95: $menu
96: self.close();
97: }
98:
99: </script>
100: ENDSUBM
101: $r->print(&Apache::loncommon::start_page(undef,$js,
102: {'only_body' => 1,
103: 'bgcolor' => '#FFFFFF',
104: 'add_entries' =>
105: {'onload' =>
106: "submitthis()"}}).
107: &Apache::loncommon::end_page());
108:
109: return OK;
110: }
111: if ($ENV{QUERY_STRING} =~ /^launchExternal/) {
112: &Apache::lonnet::put('environment',{'remotenavmap' => 'on'});
113: &Apache::lonnet::appenv('environment.remotenavmap' => 'on');
114: my $menu=&Apache::lonmenu::reopenmenu();
115: my $navstatus=&Apache::lonmenu::get_nav_status();
116: if ($menu) {
117: $r->print(<<MENU);
118: <script type="text/javascript">
119: swmenu=$menu
120: swmenu.clearTimeout(swmenu.menucltim);
121: $navstatus
122: </script>
123: MENU
124: }
125: }
126: if ($ENV{QUERY_STRING} eq 'turningOffExternal') {
127: $env{'environment.remotenavmap'}='off';
128: }
129:
130: # Create the nav map
131: my $navmap = Apache::lonnavmaps::navmap->new();
132:
133: if (!defined($navmap)) {
134: my $requrl = $r->uri;
135: $env{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";
136: return HTTP_NOT_ACCEPTABLE;
137: }
138: $r->send_http_header;
139:
140: # ------------------------------------------------------------ Get query string
141: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register','sort','showOnlyHomework','postsymb']);
142:
143: # ----------------------------------------------------- Force menu registration
144: my $body_only='';
145: my $js;
146: if ($env{'environment.remotenavmap'} eq 'on') {
147: $js='<script type="text/javascript">
148: function collapse() {
149: this.document.location="/adm/navmaps?collapseExternal";
150: }
151: </script>';
152: $body_only=1;
153: }
154:
155: # Header
156: my $course_type = &Apache::loncommon::course_type();
157: $r->print(&Apache::loncommon::start_page('Navigate '.$course_type.
158: ' Contents',
159: $js,
160: {'only_body' => $body_only,
161: 'force_register' =>
162: $env{'form.register'},}));
163: $r->print('<script type="text/javascript">window.focus();</script>');
164:
165: $r->rflush();
166:
167: # Check that it's defined
168: if (!($navmap->courseMapDefined())) {
169: $r->print(&Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT'));
170: $r->print('<span class="LC_error">'.&mt('Coursemap undefined.').
171: '</span>' .
172: &Apache::loncommon::end_page());
173: return OK;
174: }
175:
176: # See if there's only one map in the top-level, if we don't
177: # already have a filter... if so, automatically display it
178: # (older code; should use retrieveResources)
179: if ($ENV{QUERY_STRING} !~ /filter/) {
180: my $iterator = $navmap->getIterator(undef, undef, undef, 0);
181: my $curRes;
182: my $sequenceCount = 0;
183: my $sequenceId;
184: while ($curRes = $iterator->next()) {
185: if (ref($curRes) && $curRes->is_sequence()) {
186: $sequenceCount++;
187: $sequenceId = $curRes->map_pc();
188: }
189: }
190:
191: if ($sequenceCount == 1) {
192: # The automatic iterator creation in the render call
193: # will pick this up. We know the condition because
194: # the defined($env{'form.filter'}) also ensures this
195: # is a fresh call.
196: $env{'form.filter'} = "$sequenceId";
197: }
198: }
199:
200: if ($ENV{QUERY_STRING} eq 'launchExternal') {
201: $r->print('
202: <form name="returnwin" action="/adm/flip?postdata=navlaunch%3a"
203: method="post" target="loncapaclient">
204: </form>');
205: $r->print('
206: <script type="text/javascript">
207: this.document.returnwin.submit();
208: </script>');
209: }
210:
211: if ($env{'environment.remotenavmap'} ne 'on') {
212: $r->print(&launch_win('link','yes',\%toplinkitems));
213: }
214: if ($env{'environment.remotenavmap'} eq 'on') {
215: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'closenav',
216: 'collapse()',
217: "Close navigation window");
218: }
219:
220:
221: # Check to see if the student is jumping to next open, do-able problem
222: if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) {
223: # Find the next homework problem that they can do.
224: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
225: my $curRes;
226: my $foundDoableProblem = 0;
227: my $minimumduedate;
1.2 ! albertel 228: my $now = time();
! 229:
1.1 albertel 230: while ($curRes = $iterator->next()) {
231: if (ref($curRes) && $curRes->is_problem()) {
232: my $status = $curRes->status();
1.2 ! albertel 233: my $thisduedate=$curRes->duedate();
! 234: if ($thisduedate > $now
! 235: && $curRes->completable()) {
1.1 albertel 236:
237: $foundDoableProblem = 1;
238:
1.2 ! albertel 239: if (!defined($minimumduedate)
! 240: || $thisduedate<$minimumduedate) {
1.1 albertel 241: # Pop open all previous maps
242: my $stack = $iterator->getStack();
243: pop @$stack; # last resource in the stack is the problem
244: # itself, which we don't need in the map stack
245: my @mapPcs = map {$_->map_pc()} @$stack;
246: $env{'form.filter'} = join(',', @mapPcs);
247:
248: # Mark as both "here" and "jump"
249: $env{'form.postsymb'} = $curRes->symb();
250: $minimumduedate=$thisduedate;
251: }
252: }
253: }
254: }
255:
256: # If we found no problems, print a note to that effect.
257: if (!$foundDoableProblem) {
258: $r->print("<font size='+2'>All homework assignments have been completed.</font><br /><br />");
259: }
260: } else {
261: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'firsthomework',
262: 'location.href="navmaps?jumpToFirstHomework"',
263: "Show my first due problem");
264: }
265:
266: my $suppressEmptySequences = 0;
267: my $filterFunc = undef;
268: my $resource_no_folder_link = 0;
269:
270: # Display only due homework.
271: my $showOnlyHomework = 0;
272: if ($env{'form.showOnlyHomework'} eq "1") {
273: $showOnlyHomework = 1;
274: $suppressEmptySequences = 1;
275: $filterFunc = sub { my $res = shift;
276: return $res->completable() || $res->is_map();
277: };
278: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'everything',
279: 'location.href="navmaps?sort='.$env{'form.sort'}.'"',
280: "Show everything");
281: $r->print("<p><font size='+2'>".&mt("Uncompleted Problems")."</font></p>");
282: $env{'form.filter'} = '';
283: $env{'form.condition'} = 1;
284: $resource_no_folder_link = 1;
285: } else {
286: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'uncompleted',
287: 'location.href="navmaps?sort='.$env{'form.sort'}.
288: '&showOnlyHomework=1"',
289: "Show only uncompleted problems");
290: }
291:
292: my %selected=($env{'form.sort'} => 'selected=on');
293: my $sort_html=("<form>
294: <nobr>
295: <input type=\"hidden\" name=\"showOnlyHomework\" value=\"".$env{'form.showOnlyHomework'}."\" />
296: <input type=\"submit\" value=\"".&mt('Sort by:')."\" />
297: <select name=\"sort\">
298: <option value=\"default\" $selected{'default'}>".&mt('Default')."</option>
299: <option value=\"title\" $selected{'title'} >".&mt('Title')."</option>
300: <option value=\"duedate\" $selected{'duedate'}>".&mt('Duedate')."</option>
301: <option value=\"discussion\" $selected{'discussion'}>".&mt('Has New Discussion')."</option>
302: </select>
303: </nobr>
304: </form>");
305: # renderer call
306: my $renderArgs = { 'cols' => [0,1,2,3],
307: 'sort' => $env{'form.sort'},
308: 'url' => '/adm/navmaps',
309: 'navmap' => $navmap,
310: 'suppressNavmap' => 1,
311: 'suppressEmptySequences' => $suppressEmptySequences,
312: 'filterFunc' => $filterFunc,
313: 'resource_no_folder_link' => $resource_no_folder_link,
314: 'sort_html'=> $sort_html,
315: 'r' => $r,
316: 'caller' => 'navmapsdisplay',
317: 'linkitems' => \%toplinkitems};
318: my $render = &Apache::lonnavmaps::render($renderArgs);
319:
320: # If no resources were printed, print a reassuring message so the
321: # user knows there was no error.
322: if ($renderArgs->{'counter'} == 0) {
323: if ($showOnlyHomework) {
324: $r->print("<p><font size='+1'>".&mt("All homework is currently completed").".</font></p>");
325: } else { # both jumpToFirstHomework and normal use the same: course must be empty
326: $r->print("<p><font size='+1'>This course is empty.</font></p>");
327: }
328: }
329: #my $td=&tv_interval($t0);
330: #$r->print("<br />$td");
331:
332: $r->print(&Apache::loncommon::end_page());
333: $r->rflush();
334:
335: return OK;
336: }
337:
338: sub launch_win {
339: my ($mode,$script,$toplinkitems,$firsttime)=@_;
340: my $result;
341: if ($script ne 'no') {
342: $result.='<script type="text/javascript">';
343: }
344: if ($firsttime) {
345: $result.='function launch_navmapwin() {
346: newWindow=open(\'/adm/navmaps?launchExternalRoles\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');
347: }';
348: } else {
349: $result.='function launch_navmapwin() {
350: newWindow=open(\'/adm/navmaps?launchExternal\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');
351: }';
352: }
353: if ($mode eq 'now') {
354: $result.="\nlaunch_navmapwin();\n";
355: }
356: if ($script ne 'no') {
357: $result.='</script>';
358: }
359: if ($mode eq 'link') {
360: &Apache::lonnavmaps::add_linkitem($toplinkitems,'launchnav',
361: 'launch_navmapwin()',
362: "Launch navigation window");
363: }
364: return $result;
365: }
366:
367: 1;
368: __END__
369:
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