1: # The LearningOnline Network
2: # Simple Page Editor
3: #
4: # $Id: lonsimplepage.pm,v 1.81 2009/05/15 09:55:32 amueller 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::lontemplate;
35: use Apache::lonnet;
36: use Apache::lontexconvert;
37: use Apache::lonfeedback;
38: use Apache::lonlocal;
39: use Apache::lonprintout;
40: use Apache::lonxml;
41: use Apache::longroup;
42: use HTML::Entities();
43: use LONCAPA;
44:
45: sub get_db_name {
46: my ($url) = @_;
47: my ($udom,$uname,$marker)=(split(m{/},$url))[2,3,4];
48: my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
49: my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
50:
51: my $db_name;
52:
53: if ($dom && $crs && ($udom eq $dom) && ($uname eq $crs)) {
54: $marker =~ s/\W//g;
55: $db_name = 'grppage_'.$marker;
56: } else {
57: $marker=~s/\D//g;
58: $db_name = 'smppage_'.$marker;
59: }
60: return if (!defined($marker));
61:
62: return $db_name;
63: }
64:
65: sub handler {
66: my $r = shift;
67: &Apache::loncommon::content_type($r,'text/html');
68: $r->send_http_header;
69: return OK if $r->header_only;
70: my $target=$env{'form.grade_target'};
71: # ------------------------------------------------------------ Print the screen
72: if ($target eq 'tex') {
73: $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
74: }
75:
76: # Is this even in a course?
77: unless ($env{'request.course.id'}) {
78: if ($target ne 'tex') {
79: &Apache::loncommon::simple_error_page($r,'','Not in a course');
80: } else {
81: $r->print('\textbf{Not in a course}\end{document}');
82: }
83: return OK;
84: }
85:
86: my $db_name = &get_db_name($r->uri);
87:
88: my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
89: my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
90: my ($group,$group_desc,$group_home_view,$group_home_edit,
91: $group_view_perm,$group_edit_perm);
92: my %curr_group = ();
93: my %groupinfo = ();
94: if ($db_name =~ /^grppage_/) {
95: $group = (split(m{/},$r->uri))[4];
96: $group =~ s/\W//g;
97: my %curr_groups = &Apache::longroup::coursegroups($dom,$crs,$group);
98: if (!%curr_groups) {
99: &Apache::loncommon::simple_error_page($r,'','Invalid group name');
100: return OK;
101: }
102: %groupinfo =
103: &Apache::longroup::get_group_settings($curr_groups{$group});
104: $group_desc = &unescape($groupinfo{'description'});
105: }
106:
107: if (!$db_name) {
108: &Apache::loncommon::simple_error_page($r,'','Invalid call');
109: return OK;
110: }
111:
112: # --------------------------------------------------------- The syllabus fields
113: my %syllabusfields=&Apache::lonlocal::texthash(
114: 'aaa_title' => 'Page Title',
115: 'bbb_content' => 'Content',
116: 'ccc_webreferences' => 'Web References');
117: if ($group ne '') {
118: $syllabusfields{'abb_links'} = &mt('Available Group Tools');
119: }
120:
121:
122: # ------------------------------------------------------------ Get query string
123: &Apache::loncommon::get_unprocessed_cgi
124: ($ENV{'QUERY_STRING'},['forcestudent','forceedit',
125: 'register','ref']);
126: # --------------------------------------------------------------- Force Student
127: my $forcestudent='';
128: if ($env{'form.forcestudent'} || $target eq 'tex' ) { $forcestudent='student'; };
129: my $forceedit='';
130: if ($env{'form.forceedit'}) { $forceedit='edit'; }
131:
132: my $refarg;
133: if ($env{'form.ref'}) {
134: $refarg = '&ref='.$env{'form.ref'};
135: }
136:
137: my %syllabus=&Apache::lonnet::dump($db_name,$dom,$crs);
138:
139: # --------------------------------------- There is such a user, get environment
140:
141: if ($target ne 'tex') {
142: my $title = 'Simple Course Page';
143: if ($group ne '') {
144: $title = 'Simple Group Page';
145: }
146: my $start_page =
147: &Apache::loncommon::start_page($title,undef,
148: {'function' => $forcestudent,
149: 'domain' => $dom,
150: 'force_register' =>
151: $env{'form.register'},});
152: $r->print($start_page);
153: }
154:
155: if ($group ne '') {
156: my $group_view_perm =
157: &Apache::lonnet::allowed('vcg',$env{'request.course.id'}.
158: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
159: $group_edit_perm =
160: &Apache::lonnet::allowed('mdg',$env{'request.course.id'}.
161: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
162: $group_home_view = &Apache::lonnet::allowed('vgh',
163: $env{'request.course.id'}.'/'.$group);
164: $group_home_edit = &Apache::lonnet::allowed('mgh',
165: $env{'request.course.id'}.'/'.$group);
166: if ($group_view_perm || $group_edit_perm || $group_home_view ||
167: $group_home_edit || &Apache::longroup::check_group_access($group)) {
168: if (($env{'form.ref'} eq 'grouplist') && ($target ne 'tex')) {
169: $r->print(&grouppage_breadcrumbs($dom,$crs,$group,$group_desc));
170: }
171: if ((!$group_home_edit) && (!$group_home_view) &&
172: (!$group_view_perm) && (!$group_edit_perm)) {
173: &display_group_links($r,$target,$group,'view',$refarg,%groupinfo);
174: if ($env{'form.grade_target'} ne 'tex') {
175: $r->print(&Apache::loncommon::end_page());
176: } else {
177: $r->print('\end{document}');
178: }
179: return OK;
180: }
181: } else {
182: my $msg =
183: &mt('You do not currently have rights to view this group.');
184: if ($target ne 'tex') {
185: $r->print("<p>$msg</p>".
186: &Apache::loncommon::end_page());
187: } else {
188: $r->print('\textbf{'.$msg.'}\end{document}');
189: }
190: return OK;
191: }
192: my ($blocked,$blocktext) =
193: &Apache::loncommon::blocking_status('groups');
194: if ($blocked) {
195: $r->print($blocktext);
196: $r->print(&Apache::loncommon::end_page());
197: return OK;
198: }
199: }
200:
201: my $allowed;
202:
203: if ($group ne '') {
204: $allowed = $group_edit_perm;
205: if (!$allowed) {
206: $allowed = $group_home_edit;
207: }
208: } else {
209: $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
210: }
211: my $privileged=$allowed;
212: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
213: $forcestudent='student';
214: }
215:
216: if ($forcestudent or $target eq 'tex') { $allowed=0; }
217:
218: if (($env{'form.uploaddoc.filename'} and $target ne 'tex') &&
219: ($env{'form.storeupl'}) && ($allowed)) {
220: if ($env{'form.uploaddoc.filename'}=~/\.(gif|jpg|png|jpeg)$/i) {
221: if ($syllabus{'uploaded.photourl'}) {
222: &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
223: }
224: if ($group ne '') {
225: $syllabus{'uploaded.photourl'}=&Apache::lonnet::userfileupload(
226: 'uploaddoc',1,"grouppage/$group");
227: } else {
228: $syllabus{'uploaded.photourl'}=
229: &Apache::lonnet::userfileupload('uploaddoc',1,'simplepage');
230: }
231: }
232: $syllabus{'uploaded.lastmodified'}=time;
233: &Apache::lonnet::put($db_name,\%syllabus,$dom,$crs);
234: }
235: if ($allowed && $env{'form.delupl'}) {
236: if ($syllabus{'uploaded.photourl'}) {
237: &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
238: delete($syllabus{'uploaded.photourl'});
239: &Apache::lonnet::del('simplepage',['uploaded.photourl']);
240: }
241: }
242: if (($allowed) && ($env{'form.storesyl'})) {
243: foreach my $syl_field (keys(%syllabusfields)) {
244: my $field=$env{'form.'.$syl_field};
245: chomp($field);
246: $field=~s/\s+$//s;
247: $field=~s/^\s+//s;
248: $field=~s/\<br\s*\/*\>$//s;
249: $field=&Apache::lonfeedback::clear_out_html($field,1);
250: $syllabus{$syl_field}=$field;
251: }
252: $syllabus{'uploaded.lastmodified'}=time;
253: &Apache::lonnet::put($db_name,\%syllabus,$dom,$crs);
254: }
255:
256: #---Print help Text
257: if($target ne 'tex'){
258: if ($allowed) {
259: $r->print(&Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes',&mt('Help with filling in text boxes')));
260: }
261: }
262: #---Print Function
263: if ($target ne 'tex') {
264: if ($allowed || $privileged) {
265: $r->print(&Apache::lontemplate::start_functionslist());
266: if ($allowed) {
267: $r->print(&Apache::lontemplate::item_functionslist(
268: '<a href="'.$r->uri.'?forcestudent=1">'.&mt('Show Student View').'</a>'
269: .&Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView')));
270: } elsif ($privileged) {
271: my $edittext = &mt('Edit');
272: if ($group ne '') {
273: $edittext = &mt('Edit Group Homepage');
274: }
275: $r->print(&Apache::lontemplate::item_functionslist(
276: '<a href="'.$r->uri.'?forceedit=edit'.$refarg.'">'.$edittext.'</a>'));
277: if ($group ne '') {
278: if ($group_edit_perm) {
279: $r->print(&Apache::lontemplate::item_functionslist(
280: '<a href="/adm/coursegroups?action=modify&refpage=grouplist'
281: .'&state=pick_task&groupname='.$group.'">'
282: .&mt('Edit Group Settings').'</a>'));
283: }
284: }
285: }
286: $r->print(&Apache::lontemplate::end_functionslist());
287: }
288: }
289:
290: # ---------------------------------------------------------------- Get syllabus
291: if ((($syllabus{'uploaded.lastmodified'}) &&
292: (($group ne '' && ($group_home_view || $group_edit_perm ||
293: $group_view_perm)) || ($group eq ''))) || ($allowed)) {
294: my $image;
295: if ($syllabus{'uploaded.photourl'}) {
296: &Apache::lonnet::allowuploaded('/adm/smppg',
297: $syllabus{'uploaded.photourl'});
298:
299: $image='<img src="'.$syllabus{'uploaded.photourl'}.'"
300: />';
301: if ($target eq 'tex') {
302: $image=&Apache::lonxml::xmlparse($r,'tex',$image);
303: }
304: }
305:
306: if ($allowed) {
307: $r->print(
308: '<form method="post" enctype="multipart/form-data">'.
309: '<input type="hidden" name="forceedit" value="edit" />'.
310: '<h3>'.&mt('Upload a Photo').'</h3>'.
311: '<input type="file" name="uploaddoc" size="50" />'.
312: '<input type="submit" name="storeupl" value="'.&mt('Upload').'" />'.
313: '</form><form method="post">'.
314: '<input type="hidden" name="forceedit" value="edit" />');
315: if ($syllabus{'uploaded.photourl'}) {
316: $r->print('<form method="post"><input type="submit" name="delupl" value="'.&mt('Delete Photo').'" />' );
317: }
318: }
319: if ($allowed) {
320: $r->print($image.'<div class="clear"> </div>');
321: }
322:
323: foreach my $field (sort(keys(%syllabusfields))) {
324: if (($syllabus{$field}) || ($allowed) ||
325: ($field eq 'abb_links' && $group ne '')) {
326: my $message=$syllabus{$field};
327: &Apache::lonfeedback::newline_to_br(\$message);
328: $message=~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
329: if ($allowed) {
330: $message=&Apache::lonspeller::markeduptext($message);
331: }
332: if ($target ne 'tex') {
333: $message=&Apache::lontexconvert::msgtexconverted($message);
334: }
335: if ($field eq 'abb_links' && $group ne '') {
336: $r->print('<br /><input type="hidden" name="'.$field.
337: '" value="'.$syllabus{$field}.'" />');
338: &display_group_links($r,$target,$group,'edit',$refarg,
339: %groupinfo);
340: $r->print('<br />');
341: } elsif ($field eq 'aaa_title') {
342: if ($target ne 'tex') {
343: if ($allowed) {
344: $r->print('<p>');
345: }
346: $r->print('<h2>'.$message.'</h2>');
347: } else {
348: my $safeinit;
349: $r->print(&Apache::lonxml::xmlparse($r,'tex','<h1>'.$message.'</h1>'));
350: }
351: if ($allowed) {
352: if ($env{'form.grade_target'} ne 'tex') {
353: &Apache::lontemplate::print_template($r, &mt('Title'), $message, $allowed, 'LC_ContentBoxSpecial');
354: &Apache::lontemplate::print_editbox_template($r,$syllabus{$field},$field);
355: $r->print('</p>');
356: } else {
357: my $safeinit;
358: $r->print(&Apache::lonxml::xmlparse($r,'tex',$syllabus{$field},$safeinit));
359: }
360: }
361: if (!$allowed) {$r->print($image); }
362: } else {
363: if ($target ne 'tex') {
364: if ($allowed) {
365: $r->print('<p>');
366: }
367: &Apache::lontemplate::print_template($r,$syllabusfields{$field},$message,$allowed,'LC_ContentBoxSpecial');
368: } else {
369: my $safeinit;
370: $r->print(&Apache::lonxml::xmlparse($r,'tex','<h3>'.$syllabusfields{$field}.'</h3>'));
371: $r->print(&Apache::lonxml::xmlparse($r,'tex',$message));
372: }
373: if ($allowed) {
374: if ($target ne 'tex') {
375: &Apache::lontemplate::print_editbox_template($r,$syllabus{$field},$field);
376: $r->print('</p>');
377: } else {
378: my $safeinit;
379: $r->print(&Apache::lonxml::xmlparse($r,'tex',$syllabus{$field},$safeinit));
380: }
381: }
382: }
383: }
384: }
385: if ($allowed && ($env{'form.grade_target'} ne 'tex')) {
386: $r->print(&Apache::lonhtmlcommon::htmlareaselectactive
387: ('bbb_content').'</form>');
388: }
389: if ($env{'form.grade_target'} ne 'tex') {$r->print('</p>');}
390:
391: } else {
392: if ($group ne '') {
393: &display_group_links($r,$target,$group,'view',$refarg,%groupinfo);
394: } else {
395: $r->print('<p>'.&mt('No page information provided.').'</p>');
396: }
397: }
398: if ($env{'form.grade_target'} ne 'tex') {
399: $r->print(&Apache::loncommon::end_page());
400: } else {
401: $r->print('\end{document}');
402: }
403: return OK;
404: }
405:
406: sub display_group_links {
407: my ($r,$target,$group,$context,$refarg,%groupinfo) = @_;
408: my @available = ();
409: my %menu = ();
410: %{$menu{'email'}} = (
411: text => 'Group Message',
412: href => '/adm/email?compose=group&group='.$group.
413: $refarg,
414: );
415: %{$menu{'discussion'}} = (
416: text => 'Discussion Boards',
417: href => '/adm/groupboards?group='.$group.$refarg,
418: );
419: %{$menu{'chat'}} = (
420: text => 'Group Chat Room',
421: href => "javascript:group_chat('$group')",
422: );
423: %{$menu{'files'}} = (
424: text => 'Group Portfolio',
425: href => '/adm/coursegrp_portfolio?group='.$group.
426: $refarg,
427: );
428: %{$menu{'roster'}} = (
429: text => 'Membership Roster',
430: href => '/adm/grouproster?group='.$group.$refarg,
431: );
432: foreach my $tool (sort(keys(%menu))) {
433: if ($groupinfo{functions}{$tool} eq 'on') {
434: push(@available,$tool);
435: }
436: }
437: if (@available > 0) {
438: my $output = '';
439: if ($target eq 'tex') {
440: $output = '<table cellspacing="4" cellpadding="4">';
441: } else {
442: $output = &Apache::loncommon::start_data_table();
443: }
444: foreach my $tool (@available) {
445: if ($target eq 'tex') {
446: $output .= '<tr><td>'.&mt($menu{$tool}{text}).'</td></tr>';
447: } else {
448: $output .= &Apache::loncommon::start_data_table_row()
449: .'<td><a href="'.$menu{$tool}{href}.'">'
450: .&mt($menu{$tool}{text}).'</a></td>'
451: .&Apache::loncommon::end_data_table_row();
452: }
453: }
454: if ($target eq 'tex') {
455: $output .= '</table>';
456: } else {
457: $output .= &Apache::loncommon::end_data_table();
458: }
459: if ($target eq 'tex') {
460: $r->print(&Apache::lonxml::xmlparse($r,'tex',&mt('Available functions').'<br /><br />'.$output));
461: } else {
462: $r->print('<h3>'.&mt('Available Group Tools').'</h3>'.$output);
463: }
464: } else {
465: my $output;
466: if ($context eq 'edit') {
467: $output = &mt('No group functionality.');
468: } else {
469: $output = &mt('No group functionality (e.g., e-mail, discussion, chat room or file upload) is currently available to you in this group: [_1].','<b>'.&unescape($groupinfo{'description'}).'</b>');
470: }
471: if ($target eq 'tex') {
472: $r->print(&Apache::lonxml::xmlparse($r,'tex',$output));
473: } else {
474: $r->print($output);
475: }
476: }
477: }
478:
479: sub grouppage_breadcrumbs {
480: my ($cdom,$cnum,$group,$description) = @_;
481: &Apache::lonhtmlcommon::clear_breadcrumbs();
482: &Apache::lonhtmlcommon::add_breadcrumb
483: ({href=>"/adm/coursegroups",
484: text=>"Groups",
485: title=>"Display Groups"},
486: {href=>"/adm/$cdom/$cnum/$group/smppg?ref=grouplist",
487: text=>&mt('Group:')." $description",
488: title=>"Go to group's home page"},
489: );
490: my $output .= &Apache::lonhtmlcommon::breadcrumbs(&mt('Group page - [_1]',
491: $description));
492: return $output;
493: }
494:
495: 1;
496: __END__
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