Annotation of loncom/interface/lonnavdisplay.pm, revision 1.33
1.1 albertel 1: # The LearningOnline Network with CAPA
1.28 raeburn 2: # Navigate Maps Display Handler
1.1 albertel 3: #
1.33 ! raeburn 4: # $Id: lonnavdisplay.pm,v 1.32 2015/03/30 22:29:24 raeburn 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;
1.27 musolffc 33: use Apache::Constants qw(:common :http REDIRECT);
1.1 albertel 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();
1.32 raeburn 41: use Apache::lonuserstate;
1.1 albertel 42:
43: sub handler {
44: my $r = shift;
45: real_handler($r);
46: }
47:
48: sub real_handler {
49: my $r = shift;
50: # Handle header-only request
51: if ($r->header_only) {
1.30 raeburn 52: &Apache::loncommon::content_type($r,'text/html');
1.1 albertel 53: $r->send_http_header;
54: return OK;
55: }
56:
1.27 musolffc 57: # Check for critical messages and redirect if present.
58: my ($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:
1.31 raeburn 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:
1.33 ! raeburn 86: my $course_type = &Apache::loncommon::course_type();
! 87: if (($course_type eq 'Placement') && (!$env{'request.role.adv'})) {
! 88: my $furl = &Apache::lonpageflip::first_accessible_resource();
! 89: &Apache::loncommon::content_type($r,'text/html');
! 90: $r->header_out(Location => $furl);
! 91: return REDIRECT;
! 92: }
! 93:
1.1 albertel 94: # Create the nav map
95: my $navmap = Apache::lonnavmaps::navmap->new();
96:
97: if (!defined($navmap)) {
98: my $requrl = $r->uri;
99: $env{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";
1.5 raeburn 100: $env{'user.reinit'} = 1;
1.1 albertel 101: return HTTP_NOT_ACCEPTABLE;
102: }
1.30 raeburn 103:
104: # Send header, don't cache this page
105: &Apache::loncommon::content_type($r,'text/html');
1.1 albertel 106: $r->send_http_header;
107:
108: # ------------------------------------------------------------ Get query string
1.17 raeburn 109: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['sort','showOnlyHomework','postsymb','register']);
1.1 albertel 110:
111: # ----------------------------------------------------- Force menu registration
112: # Header
113: my $course_type = &Apache::loncommon::course_type();
1.15 droeschl 114: my $title = $course_type . ' Contents';
1.17 raeburn 115: my ($start_page,$args);
116: if ($env{'form.register'}) {
117: $args = {'force_register' => $env{'form.register'}};
118: $start_page = &Apache::loncommon::start_page($title,undef,$args);
119: } else {
120: my $brcrum = [{href => '/adm/navmaps',
121: text => &mt($course_type . ' Contents'),
122: no_mt => 1},
123: ];
124: $args = {'bread_crumbs' => $brcrum};
125: $start_page = &Apache::loncommon::start_page($title,undef,$args);
126: }
127: $r->print($start_page.
1.26 raeburn 128: '<script type="text/javascript">'."\n".
129: '// <![CDATA['."\n".
130: 'window.focus();'."\n".
131: '// ]]>'."\n".
132: '</script>');
1.20 raeburn 133: &startContentScreen($r,'navmaps');
1.1 albertel 134: $r->rflush();
135:
136: # Check that it's defined
137: if (!($navmap->courseMapDefined())) {
138: $r->print(&Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT'));
139: $r->print('<span class="LC_error">'.&mt('Coursemap undefined.').
140: '</span>' .
141: &Apache::loncommon::end_page());
142: return OK;
143: }
144:
1.30 raeburn 145: my %toplinkitems=();
1.21 raeburn 146: my @resources = $navmap->retrieveResources();
147: my $sequenceCount = 0;
148: my $problemCount = 0;
149: my $notaprobCount = 0;
150: my $sequenceId;
151: my $notools;
152: foreach my $curRes (@resources) {
153: if (ref($curRes)) {
154: if ($curRes->is_sequence()) {
1.1 albertel 155: $sequenceCount++;
156: $sequenceId = $curRes->map_pc();
1.21 raeburn 157: } elsif ($curRes->is_problem()) {
158: $problemCount ++;
159: } else {
160: $notaprobCount ++;
1.1 albertel 161: }
162: }
1.21 raeburn 163: }
164: if (($sequenceCount == 1) && (!$problemCount) && ($notaprobCount <= 1)) {
165: $notools = 1;
166: }
167:
168: # If there's only one map in the top-level and we don't
169: # already have a filter, automatically display it
170: if ($ENV{QUERY_STRING} !~ /filter/) {
1.1 albertel 171: if ($sequenceCount == 1) {
172: # The automatic iterator creation in the render call
173: # will pick this up. We know the condition because
174: # the defined($env{'form.filter'}) also ensures this
175: # is a fresh call.
176: $env{'form.filter'} = "$sequenceId";
177: }
178: }
179:
180: # Check to see if the student is jumping to next open, do-able problem
181: if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) {
182: # Find the next homework problem that they can do.
183: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
184: my $curRes;
185: my $foundDoableProblem = 0;
186: my $minimumduedate;
1.2 albertel 187: my $now = time();
188:
1.1 albertel 189: while ($curRes = $iterator->next()) {
190: if (ref($curRes) && $curRes->is_problem()) {
191: my $status = $curRes->status();
1.2 albertel 192: my $thisduedate=$curRes->duedate();
193: if ($thisduedate > $now
194: && $curRes->completable()) {
1.1 albertel 195:
196: $foundDoableProblem = 1;
197:
1.2 albertel 198: if (!defined($minimumduedate)
199: || $thisduedate<$minimumduedate) {
1.1 albertel 200: # Pop open all previous maps
201: my $stack = $iterator->getStack();
202: pop @$stack; # last resource in the stack is the problem
203: # itself, which we don't need in the map stack
204: my @mapPcs = map {$_->map_pc()} @$stack;
205: $env{'form.filter'} = join(',', @mapPcs);
206:
207: # Mark as both "here" and "jump"
208: $env{'form.postsymb'} = $curRes->symb();
209: $minimumduedate=$thisduedate;
210: }
211: }
212: }
213: }
214:
215: # If we found no problems, print a note to that effect.
216: if (!$foundDoableProblem) {
1.7 schulted 217: $r->print("<span class=\"LC_info\">"
1.4 bisitz 218: .&mt("All homework assignments have been completed.")
1.7 schulted 219: ."</span>");
1.1 albertel 220: }
221: } else {
1.17 raeburn 222: my $link = 'navmaps?jumpToFirstHomework';
223: if ($env{'form.register'}) {
224: $link .= '&register='.$env{'form.register'};
225: }
1.21 raeburn 226: unless ($notools) {
227: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'firsthomework',
228: 'location.href="'.$link.'"',
229: "Show my first due problem");
230: }
1.1 albertel 231: }
232:
233: my $suppressEmptySequences = 0;
234: my $filterFunc = undef;
235: my $resource_no_folder_link = 0;
236:
237: # Display only due homework.
238: my $showOnlyHomework = 0;
239: if ($env{'form.showOnlyHomework'} eq "1") {
240: $showOnlyHomework = 1;
241: $suppressEmptySequences = 1;
242: $filterFunc = sub { my $res = shift;
243: return $res->completable() || $res->is_map();
244: };
1.17 raeburn 245: my $link = 'navmaps?sort='.$env{'form.sort'};
246: if ($env{'form.register'}) {
247: $link .= '&register='.$env{'form.register'};
248: }
1.1 albertel 249: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'everything',
1.17 raeburn 250: 'location.href="'.$link.'"',
251: 'Show everything');
1.7 schulted 252: $r->print("<span class=\"LC_info\">".&mt("Uncompleted Problems")."</span>");
1.1 albertel 253: $env{'form.filter'} = '';
254: $env{'form.condition'} = 1;
255: $resource_no_folder_link = 1;
256: } else {
1.17 raeburn 257: my $link = 'navmaps?sort='.$env{'form.sort'}.'&showOnlyHomework=1';
258: if ($env{'form.register'}) {
259: $link .= '&register='.$env{'form.register'};
260: }
1.21 raeburn 261: unless ($notools) {
262: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'uncompleted',
263: 'location.href="'.$link.'"',
264: 'Show only uncompleted problems');
265: }
1.1 albertel 266: }
267:
1.10 bisitz 268: my %selected=($env{'form.sort'} => ' selected="selected"');
1.21 raeburn 269: my $sort_html;
270: unless ($notools) {
271: $sort_html=(
272: '<form name="sortForm" action="">
1.17 raeburn 273: <span class="LC_nobreak">
274: <input type="hidden" name="showOnlyHomework" value="'.$env{'form.showOnlyHomework'}.'" />
275: '.&mt('Sort by:').'
1.18 bisitz 276: <select name="sort" onchange="document.sortForm.submit()">
1.17 raeburn 277: <option value="default"'.$selected{'default'}.'>'.&mt('Default').'</option>
278: <option value="title"'.$selected{'title'}.'>'.&mt('Title').'</option>
1.25 bisitz 279: <option value="duedate"'.$selected{'duedate'}.'>'.&mt('Due Date').'</option>
1.17 raeburn 280: <option value="discussion"'.$selected{'discussion'}.'>'.&mt('Has New Discussion').'</option>
1.1 albertel 281: </select>
1.17 raeburn 282: <input type="hidden" name="register" value="'.$env{'form.register'}.'" />
1.9 bisitz 283: </span>
1.17 raeburn 284: </form>');
1.21 raeburn 285: }
1.1 albertel 286: # renderer call
287: my $renderArgs = { 'cols' => [0,1,2,3],
288: 'sort' => $env{'form.sort'},
289: 'url' => '/adm/navmaps',
290: 'navmap' => $navmap,
291: 'suppressNavmap' => 1,
292: 'suppressEmptySequences' => $suppressEmptySequences,
293: 'filterFunc' => $filterFunc,
294: 'resource_no_folder_link' => $resource_no_folder_link,
295: 'sort_html'=> $sort_html,
296: 'r' => $r,
297: 'caller' => 'navmapsdisplay',
1.21 raeburn 298: 'linkitems' => \%toplinkitems,
299: 'notools' => $notools};
300:
1.1 albertel 301: my $render = &Apache::lonnavmaps::render($renderArgs);
302:
303: # If no resources were printed, print a reassuring message so the
304: # user knows there was no error.
305: if ($renderArgs->{'counter'} == 0) {
306: if ($showOnlyHomework) {
1.7 schulted 307: $r->print("<p><span class=\"LC_info\">".&mt("All homework is currently completed.")."</span></p>");
1.1 albertel 308: } else { # both jumpToFirstHomework and normal use the same: course must be empty
1.7 schulted 309: $r->print("<p><span class=\"LC_info\">".&mt("This course is empty.")."</span></p>");
1.1 albertel 310: }
311: }
1.20 raeburn 312: &endContentScreen($r);
1.1 albertel 313: $r->print(&Apache::loncommon::end_page());
314: $r->rflush();
315:
316: return OK;
317: }
318:
1.20 raeburn 319: sub startContentScreen {
320: my ($r,$mode)=@_;
321:
322: $r->print("\n".'<ul class="LC_TabContentBigger" id="mainnav">'."\n");
1.22 www 323: $r->print('<li'.(($mode eq 'navmaps')?' class="active"':'').'><a href="/adm/navmaps"><b> '.&mt('Main Content').' </b></a></li>'."\n");
1.23 raeburn 324: my $allowed = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
325: my ($suppcount,$errors);
326: unless ($allowed) {
327: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1.24 raeburn 328: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1.23 raeburn 329: ($suppcount,$errors) = &Apache::lonnet::get_numsuppfiles($cnum,$cdom);
330: }
1.24 raeburn 331: if ($allowed || $suppcount) {
1.23 raeburn 332: $r->print('<li '.(($mode eq 'supplemental')?' class="active"':'').'><a href="/adm/supplemental"><b>'.&mt('Supplemental Content').'</b></a></li>');
333: }
1.20 raeburn 334: $r->print('<li'.(($mode eq 'coursesearch')?' class="active"':'').'><a href="/adm/searchcourse"><b> '.&mt('Content Search').' </b></a></li>'."\n");
335: $r->print('<li'.(($mode eq 'courseindex')?' class="active"':'').'><a href="/adm/indexcourse"><b> '.&mt('Content Index').' </b></a></li>'."\n");
336: $r->print("\n".'</ul>'."\n");
337: $r->print('<div class="LC_Box" style="clear:both;margin:0;"><div id="maincoursedoc" style="margin:0 0;padding:0 0;"><div class="LC_ContentBox" id="mainCourseDocuments" style="display: block;">');
338: }
339:
340: sub endContentScreen {
341: my ($r)=@_;
342: $r->print('</div></div></div>');
343: }
344:
1.1 albertel 345: 1;
346: __END__
347:
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