1: # The LearningOnline Network
2: # Simple Page Editor
3: #
4: # $Id: lonsimplepage.pm,v 1.28 2005/11/15 22:05:04 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: package Apache::lonsimplepage;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::loncommon;
34: use Apache::lonnet;
35: use Apache::lontexconvert;
36: use Apache::lonfeedback;
37: use Apache::lonlocal;
38: use Apache::lonprintout;
39: use Apache::lonxml;
40:
41: sub handler {
42: my $r = shift;
43: &Apache::loncommon::content_type($r,'text/html');
44: $r->send_http_header;
45: return OK if $r->header_only;
46: my $target=$env{'form.grade_target'};
47: # ------------------------------------------------------------ Print the screen
48: if ($target ne 'tex') {
49: my $html=&Apache::lonxml::xmlbegin();
50: $r->print(<<ENDDOCUMENT);
51: $html
52: <head>
53: <title>The LearningOnline Network with CAPA</title>
54: ENDDOCUMENT
55: } else {
56: $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
57: }
58: my (undef,undef,undef,undef,$marker,$caller)=split(/\//,$r->uri);
59: # Is this even in a course?
60: unless ($env{'request.course.id'}) {
61: if ($target ne 'tex') {
62: $r->print('</head><body>Not in a course</body></html>');
63: return OK;
64: } else {
65: $r->print('\textbf{Not in a course}\end{document}');
66: }
67: }
68:
69: my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
70: my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
71: my $grp_view_permission = &Apache::lonnet::allowed('vcg',
72: $env{'request.course.id'});
73:
74: my %curr_group = ();
75: my %groupinfo = ();
76: if ($caller eq 'grppg') {
77: $marker =~ s/\W//g;
78: unless(&Apache::lonnet::get_coursegroups($dom,$crs,\%curr_group,
79: $marker)) {
80: $r->print('<body>Invalid group name</body>');
81: return OK;
82: }
83: } else {
84: $marker=~s/\D//g;
85: }
86:
87: unless ($marker) {
88: $r->print('<body>Invalid call</body>');
89: return OK;
90: }
91:
92: # --------------------------------------------------------- The syllabus fields
93: my %syllabusfields=&Apache::lonlocal::texthash(
94: 'aaa_title' => 'Page Title',
95: 'bbb_content' => 'Content',
96: 'ccc_webreferences' => 'Web References');
97: if ($caller eq 'grppg') {
98: $syllabusfields{'abb_links'} = &mt('Functionality');
99: }
100:
101:
102: # ------------------------------------------------------------ Get query string
103: &Apache::loncommon::get_unprocessed_cgi
104: ($ENV{'QUERY_STRING'},['forcestudent','forceedit','register']);
105: # ----------------------------------------------------- Force menu registration
106: my $addentries='';
107: if ($env{'form.register'}) {
108: $addentries=' onLoad="'.&Apache::lonmenu::loadevents().
109: '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
110: $r->print(&Apache::lonmenu::registerurl(1));
111: }
112: # --------------------------------------------------------------- Force Student
113: my $forcestudent='';
114: if ($env{'form.forcestudent'} || $target eq 'tex' ) { $forcestudent='student'; };
115: my $forceedit='';
116: if ($env{'form.forceedit'}) { $forceedit='edit'; }
117:
118:
119: my %syllabus=&Apache::lonnet::dump($caller.'_'.$marker,$dom,$crs);
120:
121: # --------------------------------------- There is such a user, get environment
122:
123: if ($target ne 'tex') {
124: my $title = 'Course Page';
125: if ($caller eq 'grppg') {
126: $title = 'Group Page';
127: }
128: $r->print(&Apache::lonhtmlcommon::htmlareaheaders().
129: '</head>'.&Apache::loncommon::bodytag
130: ($title,$forcestudent,$addentries,'',$dom,$env{'form.register'}));
131: }
132:
133: if ($caller eq 'grppg') {
134: if (($grp_view_permission) ||
135: (&Apache::loncommon::check_group_access($caller))) {
136: unless(&Apache::lonnet::allowed('vgh',
137: $env{'request.course.id'}.'/'.$marker)) {
138: &display_group_links($r,$target,$marker,%groupinfo);
139: return OK;
140: }
141: } else {
142: if ($target ne 'tex') {
143: $r->print('</head><body>You do not currently have rights to
144: view this group.
145: </body></html>');
146: return OK;
147: } else {
148: $r->print('\textbf{You do not currently have rights to view this group}\end{document}');
149: }
150: }
151: }
152:
153: my $allowed;
154: if ($caller eq 'grppg') {
155: $allowed = $grp_view_permission;
156: unless ($allowed) {
157: $allowed = &Apache::lonnet::allowed('mgh',$env{'request.course.id'}.
158: '/'.$marker);
159: }
160: } else {
161: $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
162: }
163: my $privileged=$allowed;
164: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
165: $forcestudent='student';
166: }
167:
168: if ($forcestudent or $target eq 'tex') { $allowed=0; }
169:
170: if ($allowed) {
171: $r->print('<p>'.
172: &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'<br /><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Student View').'</font></a>'.
173: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
174: } elsif ($privileged and $target ne 'tex') {
175: $r->print('<a href="'.$r->uri.'?forceedit=edit"><font size="+1">'.&mt('Edit').'</font></a>');
176: }
177: if (($env{'form.uploaddoc.filename'} and $target ne 'tex') &&
178: ($env{'form.storeupl'}) && ($allowed)) {
179: if ($env{'form.uploaddoc.filename'}=~/\.(gif|jpg|png|jpeg)$/i) {
180: if ($syllabus{'uploaded.photourl'}) {
181: &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
182: }
183: if ($caller eq 'grppage') {
184: $syllabus{'uploaded.photourl'}=&Apache::lonnet::userfileupload(
185: 'uploaddoc',1,"grouppage/$marker");
186: } else {
187: $syllabus{'uploaded.photourl'}=
188: &Apache::lonnet::userfileupload('uploaddoc',1,'simplepage');
189: }
190: }
191: $syllabus{'uploaded.lastmodified'}=time;
192: &Apache::lonnet::put($caller.'_'.$marker,\%syllabus,$dom,$crs);
193: }
194: if (($allowed) && ($env{'form.storesyl'})) {
195: foreach (keys %syllabusfields) {
196: my $field=$env{'form.'.$_};
197: chomp($field);
198: $field=~s/\s+$//s;
199: $field=~s/^\s+//s;
200: $field=~s/\<br\s*\/*\>$//s;
201: $field=&Apache::lonfeedback::clear_out_html($field,1);
202: $syllabus{$_}=$field;
203: }
204: $syllabus{'uploaded.lastmodified'}=time;
205: &Apache::lonnet::put($caller.'_'.$marker,\%syllabus,$dom,$crs);
206: }
207:
208: # ---------------------------------------------------------------- Get syllabus
209: if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
210: if ($syllabus{'uploaded.photourl'}) {
211: &Apache::lonnet::allowuploaded('/adm/'.$caller,
212: $syllabus{'uploaded.photourl'});
213:
214: my $image='<img src="'.$syllabus{'uploaded.photourl'}.'"
215: align="right" />';
216: if ($target eq 'tex') {
217: $image=&Apache::lonxml::xmlparse($r,'tex',$image);
218: }
219: $r->print($image);
220: }
221: if ($allowed) {
222: $r->print(
223: '<form method="post" enctype="multipart/form-data">'.
224: '<input type="hidden" name="forceedit" value="edit" />'.
225: '<h3>Upload a Photo</h3>'.
226: '<input type="file" name="uploaddoc" size="50">'.
227: '<input type="submit" name="storeupl" value="Upload">'.
228: '</form><form method="post">');
229: }
230: foreach (sort keys %syllabusfields) {
231: if (($syllabus{$_}) || ($allowed)) {
232: my $message=$syllabus{$_};
233: &Apache::lonfeedback::newline_to_br(\$message);
234: $message
235: =~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
236: if ($allowed) {
237: $message=&Apache::lonspeller::markeduptext($message);
238: }
239: $message=&Apache::lontexconvert::msgtexconverted($message);
240: if ($_ eq 'abb_links' && $caller eq 'grppg') {
241: $r->print('<br /><input type="hidden" name="'.$_.
242: '" value="'.$syllabus{$_}.'" />');
243: &display_group_links($r,$target,$marker,%groupinfo);
244: $r->print('<br />');
245: } elsif ($_ eq 'aaa_title') {
246: if ($target ne 'tex') {
247: $r->print('<h1>'.$message.'</h1>');
248: } else {
249: my $safeinit;
250: $r->print(&Apache::lonxml::xmlparse($r,'tex','<h1>'.$message.'</h1>'));
251: }
252: if ($allowed) {
253: if ($env{'form.grade_target'} ne 'tex') {
254: $r->print(
255: '<br />Title<br /><textarea cols="80" rows="2" name="'.$_.'">'.
256: $syllabus{$_}.
257: '</textarea><input type="submit" name="storesyl" value="Store" />');
258: } else {
259: my $safeinit;
260: $r->print(&Apache::lonxml::xmlparse($r,'tex',$syllabus{$_},$safeinit));
261: }
262: }
263: } else {
264: if (($_ ne 'bbb_content') || ($allowed)) {
265: if ($target ne 'tex') {
266: $r->print('<h3>'.$syllabusfields{$_}.'</h3>');
267: } else {
268: my $safeinit;
269: $r->print(&Apache::lonxml::xmlparse($r,'tex','<h3>'.$syllabusfields{$_}.'</h3>'));
270: }
271: }
272: if ($target ne 'tex') {
273: $r->print('<blockquote>'.
274: $message.'</blockquote>');
275: } else {
276: my $safeinit;
277: $r->print(&Apache::lonxml::xmlparse($r,'tex',$message));
278: }
279: if ($allowed) {
280: if ($target ne 'tex') {
281: $r->print('<br /><textarea cols="80" rows="24" name="'.$_.'" id="'.$_.'">'.
282: $syllabus{$_}.
283: '</textarea><input type="submit" name="storesyl" value="Store" />');
284: } else {
285: my $safeinit;
286: $r->print(&Apache::lonxml::xmlparse($r,'tex',$syllabus{$_},$safeinit));
287: }
288: }
289: }
290: }
291: }
292: if ($allowed && ($env{'form.grade_target'} ne 'tex')) {
293: $r->print(&Apache::lonhtmlcommon::htmlareaselectactive
294: ('bbb_content').'</form>');
295: }
296: if ($env{'form.grade_target'} ne 'tex') {$r->print('</p>');}
297: } else {
298: $r->print('<p>No page information provided.</p>');
299: }
300: if ($env{'form.grade_target'} ne 'tex') {
301: $r->print('</body></html>');
302: } else {
303: $r->print('\end{document}');
304: }
305: return OK;
306: }
307:
308: sub display_group_links {
309: my ($r,$target,$marker,%groupinfo) = @_;
310: my @available = ();
311:
312: my %menu = ();
313: %{$menu{'email'}} = (
314: text => 'Group e-mail',
315: href => '/adm/email?group='.$marker,
316: );
317: %{$menu{'discussion'}} = (
318: text => 'Discussion Boards',
319: href => '/adm/groupboards?group='.$marker,
320: );
321: %{$menu{'chat'}} = (
322: text => 'Group chat',
323: href => "javascript:group_chat('$marker')",
324: );
325: %{$menu{'files'}} = (
326: text => 'File repository',
327: href => '/adm/portfolio?group='.$marker,
328: );
329: %{$menu{'roster'}} = (
330: text => 'Membership roster',
331: href => '/adm/grouproster?group='.$marker,
332: );
333: foreach my $tool (sort(keys(%menu))) {
334: if ($groupinfo{functions}{$tool} eq 'on') {
335: push(@available,$tool);
336: }
337: }
338: if (@available > 0) {
339: my $output = '<table cellspacing="4" cellpadding="4"><tr>';
340: foreach my $tool (@available) {
341: if ($target eq 'tex') {
342: $output .= '<td>'.$menu{$tool}{text}.'</td>';
343: } else {
344: $output .= '<td><a href="'.$menu{$tool}{href}.'">'.
345: $menu{$tool}{text}.'</a></td>';
346: }
347: }
348: $output .= '</tr></table>';
349: if ($target eq 'tex') {
350: $r->print(&Apache::lonxml::xmlparse($r,'tex','Available functions<br /><br />'.$output));
351: } else {
352: $r->print('<h3>Functions</h3>'.$output);
353: }
354: } else {
355: my $output = 'No group functionality (e.g., e-mail, discussion,chat or file upload) is currently available to you in this group: '.$marker;
356: if ($target eq 'tex') {
357: $r->print(&Apache::lonxml::xmlparse($r,'tex',$output));
358: } else {
359: $r->print($output);
360: }
361: }
362: }
363:
364:
365: 1;
366: __END__
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