1: # The LearningOnline Network
2: # Simple Page Editor
3: #
4: # $Id: lonsimplepage.pm,v 1.94 2010/02/23 14:18:12 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::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 Apache::lonnavmaps();
43: use HTML::Entities();
44: use LONCAPA;
45:
46: sub get_db_name {
47: my ($url) = @_;
48: my ($udom,$uname,$marker)=(split(m{/},$url))[2,3,4];
49: my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
50: my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
51:
52: my $db_name;
53:
54: if ($dom && $crs && ($udom eq $dom) && ($uname eq $crs)) {
55: $marker =~ s/\W//g;
56: $db_name = 'grppage_'.$marker;
57: } else {
58: $marker=~s/\D//g;
59: $db_name = 'smppage_'.$marker;
60: }
61: return if (!defined($marker));
62:
63: return $db_name;
64: }
65:
66: sub handler {
67: my $r = shift;
68: &Apache::loncommon::content_type($r,'text/html');
69: $r->send_http_header;
70: return OK if $r->header_only;
71: my $target=$env{'form.grade_target'};
72: # ------------------------------------------------------------ Print the screen
73: if ($target eq 'tex') {
74: $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
75: }
76:
77: # Is this even in a course?
78: unless ($env{'request.course.id'}) {
79: if ($target ne 'tex') {
80: &Apache::loncommon::simple_error_page($r,'','Not in a course');
81: } else {
82: $r->print('\textbf{Not in a course}\end{document}');
83: }
84: return OK;
85: }
86:
87: my $db_name = &get_db_name($r->uri);
88:
89: my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
90: my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
91: my ($group,$group_desc,$group_home_view,$group_home_edit,
92: $group_view_perm,$group_edit_perm);
93: my %curr_group = ();
94: my %groupinfo = ();
95: if ($db_name =~ /^grppage_/) {
96: $group = (split(m{/},$r->uri))[4];
97: $group =~ s/\W//g;
98: my %curr_groups = &Apache::longroup::coursegroups($dom,$crs,$group);
99: if (!%curr_groups) {
100: &Apache::loncommon::simple_error_page($r,'','Invalid group name');
101: return OK;
102: }
103: %groupinfo =
104: &Apache::longroup::get_group_settings($curr_groups{$group});
105: $group_desc = &unescape($groupinfo{'description'});
106: }
107:
108: if (!$db_name) {
109: &Apache::loncommon::simple_error_page($r,'','Invalid call');
110: return OK;
111: }
112:
113: # --------------------------------------------------------- The syllabus fields
114: my %syllabusfields=&Apache::lonlocal::texthash(
115: 'aaa_title' => 'Page Title',
116: 'bbb_content' => 'Content',
117: 'ccc_webreferences' => 'Web References');
118: if ($group ne '') {
119: $syllabusfields{'abb_links'} = &mt('Available Group Tools');
120: }
121:
122:
123: # ------------------------------------------------------------ Get query string
124: &Apache::loncommon::get_unprocessed_cgi
125: ($ENV{'QUERY_STRING'},['forcestudent','forceedit',
126: 'register','ref']);
127: # --------------------------------------------------------------- Force Student
128: my $forcestudent='';
129: if ($env{'form.forcestudent'} || $target eq 'tex' ) { $forcestudent='student'; };
130: my $forceedit='';
131: if ($env{'form.forceedit'}) { $forceedit='edit'; }
132:
133: my $refarg;
134: if ($env{'form.ref'}) {
135: $refarg = '&ref='.$env{'form.ref'};
136: }
137:
138: my %syllabus=&Apache::lonnet::dump($db_name,$dom,$crs);
139:
140: # --------------------------------------- There is such a user, get environment
141:
142: if ($target ne 'tex') {
143: my $title = 'Simple Course Page';
144: if ($group ne '') {
145: $title = 'Simple Group Page';
146: }
147: my $start_page =
148: &Apache::loncommon::start_page($title,undef,
149: {'function' => $forcestudent,
150: 'domain' => $dom,
151: 'force_register' =>
152: $env{'form.register'},});
153: $r->print($start_page);
154: }
155:
156: if ($group ne '') {
157: my $group_view_perm =
158: &Apache::lonnet::allowed('vcg',$env{'request.course.id'}.
159: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
160: $group_edit_perm =
161: &Apache::lonnet::allowed('mdg',$env{'request.course.id'}.
162: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
163: $group_home_view = &Apache::lonnet::allowed('vgh',
164: $env{'request.course.id'}.'/'.$group);
165: $group_home_edit = &Apache::lonnet::allowed('mgh',
166: $env{'request.course.id'}.'/'.$group);
167: if ($group_view_perm || $group_edit_perm || $group_home_view ||
168: $group_home_edit || &Apache::longroup::check_group_access($group)) {
169: if (($env{'form.ref'} eq 'grouplist') && ($target ne 'tex')) {
170: $r->print(&grouppage_breadcrumbs($dom,$crs,$group,$group_desc));
171: }
172: if ((!$group_home_edit) && (!$group_home_view) &&
173: (!$group_view_perm) && (!$group_edit_perm)) {
174: &display_group_links($r,$target,$group,'view',$refarg,%groupinfo);
175: if ($env{'form.grade_target'} ne 'tex') {
176: $r->print(&Apache::loncommon::end_page());
177: } else {
178: $r->print('\end{document}');
179: }
180: return OK;
181: }
182: } else {
183: my $msg =
184: &mt('You do not currently have rights to view this group.');
185: if ($target ne 'tex') {
186: $r->print('<p class="LC_warning">'.$msg.'</p>'.
187: &Apache::loncommon::end_page());
188: } else {
189: $r->print('\textbf{'.$msg.'}\end{document}');
190: }
191: return OK;
192: }
193: my ($blocked,$blocktext) =
194: &Apache::loncommon::blocking_status('groups');
195: if ($blocked) {
196: $r->print($blocktext);
197: $r->print(&Apache::loncommon::end_page());
198: return OK;
199: }
200: }
201:
202: my $allowed;
203:
204: if ($group ne '') {
205: $allowed = $group_edit_perm;
206: if (!$allowed) {
207: $allowed = $group_home_edit;
208: }
209: } else {
210: $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
211: }
212: my $privileged=$allowed;
213: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
214: $forcestudent='student';
215: }
216:
217: if ($forcestudent or $target eq 'tex') { $allowed=0; }
218:
219: if (($env{'form.uploaddoc.filename'} and $target ne 'tex') &&
220: ($env{'form.storeupl'}) && ($allowed)) {
221: if ($env{'form.uploaddoc.filename'}=~/\.(gif|jpg|png|jpeg)$/i) {
222: if ($syllabus{'uploaded.photourl'}) {
223: &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
224: }
225: if ($group ne '') {
226: $syllabus{'uploaded.photourl'}=&Apache::lonnet::userfileupload(
227: 'uploaddoc',1,"grouppage/$group");
228: } else {
229: $syllabus{'uploaded.photourl'}=
230: &Apache::lonnet::userfileupload('uploaddoc',1,'simplepage');
231: }
232: }
233: $syllabus{'uploaded.lastmodified'}=time;
234: &Apache::lonnet::put($db_name,\%syllabus,$dom,$crs);
235: }
236: # if ($allowed && $env{'form.delupl'}) {
237: # if ($syllabus{'uploaded.photourl'}) {
238: # &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
239: # delete($syllabus{'uploaded.photourl'});
240: # &Apache::lonnet::del('simplepage',['uploaded.photourl']);
241: # }
242: # }
243: if (($allowed) && ($env{'form.storesyl'})) {
244: foreach my $syl_field (keys(%syllabusfields)) {
245: my $field=$env{'form.'.$syl_field};
246: chomp($field);
247: $field=~s/\s+$//s;
248: $field=~s/^\s+//s;
249: $field=~s/\<br\s*\/*\>$//s;
250: $field=&Apache::lonfeedback::clear_out_html($field,1);
251: $syllabus{$syl_field}=$field;
252: }
253: $syllabus{'uploaded.lastmodified'}=time;
254: &Apache::lonnet::put($db_name,\%syllabus,$dom,$crs);
255: }
256:
257: #---Print Function
258: if ($target ne 'tex') {
259: if ($allowed || $privileged) {
260: my $functions=&Apache::lonhtmlcommon::start_funclist();
261: my $url = $r->uri;
262: if ($group ne '') {
263: my $navmap=Apache::lonnavmaps::navmap->new();
264: if (ref($navmap)) {
265: $url = &Apache::longroup::get_group_link($dom,$crs,$group,$navmap);
266: }
267: }
268: if ($allowed) {
269: $url .= (($url=~/\?/)?'&':'?').'forcestudent=1';
270: $functions.=&Apache::lonhtmlcommon::add_item_funclist(
271: '<a href="'.$url.'">'
272: .&mt('Show Student View').'</a>'
273: .&Apache::loncommon::help_open_topic(
274: 'Uploaded_Templates_PublicView'));
275: } elsif ($privileged) {
276: my $edittext = &mt('Edit');
277: $url .= (($url=~/\?/)?'&':'?').'forceedit=edit'.$refarg;
278: if ($group ne '') {
279: $edittext = &mt('Edit Group Homepage');
280: }
281: $functions.=&Apache::lonhtmlcommon::add_item_funclist(
282: '<a href="'.$url.'">'
283: .$edittext.'</a>');
284: if ($group ne '') {
285: if ($group_edit_perm) {
286: $functions.=&Apache::lonhtmlcommon::add_item_funclist(
287: '<a href="/adm/coursegroups'
288: .'?action=modify&refpage=grouplist'
289: .'&state=pick_task&groupname='
290: .$group.'">'
291: .&mt('Edit Group Settings')
292: .'</a>');
293: }
294: }
295: }
296: $functions.=&Apache::lonhtmlcommon::end_funclist();
297: $r->print(&Apache::loncommon::head_subbox($functions));
298: }
299: }
300:
301: #---Print help Text
302: if($target ne 'tex'){
303: if ($allowed) {
304: $r->print(&Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes',&mt('Help with filling in text boxes')));
305: }
306: }
307:
308: # ---------------------------------------------------------------- Get syllabus
309: if ((($syllabus{'uploaded.lastmodified'}) &&
310: (($group ne '' && ($group_home_view || $group_edit_perm ||
311: $group_view_perm)) || ($group eq ''))) || ($allowed)) {
312: #Print the title
313: my $titletext=&HTML::Entities::encode($syllabus{'aaa_title'},'<>&"');
314: if ($target ne 'tex') {
315: if ($allowed) {
316: }
317: $r->print('<h2>'.$titletext.'</h2>');
318: } else {
319: my $safeinit;
320: $r->print(&Apache::lonxml::xmlparse($r,'tex','<h1>'.$titletext.'</h1>'));
321: }
322: if ($allowed) {
323: if ($env{'form.grade_target'} ne 'tex') {
324: #editbox for title
325: $r->print('<form method="post" action="" enctype="multipart/form-data">');
326: &Apache::lontemplate::print_start_template($r,&mt('Title'),'LC_Box');
327: $r->print($titletext);
328: $r->print("<br /><div>");
329: &Apache::lontemplate::print_textarea_template($r, $syllabus{'aaa_title'},
330: 'aaa_title', Apache::lontemplate->RICH_TEXT_ALWAYS_OFF);
331: &Apache::lontemplate::print_saveall_template($r);
332: $r->print("</div>");
333: &Apache::lontemplate::print_end_template($r);
334: } else {
335: my $safeinit;
336: $r->print(&Apache::lonxml::xmlparse($r,'tex',$syllabus{'aaa_title'},$safeinit));
337: }
338: }
339:
340: #print the image
341: my $image='';
342: if ($syllabus{'uploaded.photourl'}) {
343: &Apache::lonnet::allowuploaded('/adm/smppg',
344: $syllabus{'uploaded.photourl'});
345:
346: $image='<img src="'.$syllabus{'uploaded.photourl'}
347: .'" alt="'.&mt('Image').'" />';
348: if ($target eq 'tex') {
349: $image=&Apache::lonxml::xmlparse($r,'tex',$image);
350: }
351: }
352:
353: if ($allowed) {
354: &Apache::lontemplate::print_start_template($r, &mt('Upload a Photo'),'LC_Box');
355: $r->print($image);
356: $r->print("<br /><br />");
357: $r->print(
358: '<input type="hidden" name="forceedit" value="edit" />'.
359: '<input type="file" name="uploaddoc" size="50" />'.
360: '<input type="submit" name="storeupl" value="'.&mt('Upload').'" />'.
361: '<input type="hidden" name="forceedit" value="edit" />');
362: &Apache::lontemplate::print_end_template($r);
363:
364:
365: # if ($syllabus{'uploaded.photourl'}) {
366: # $r->print('<input type="submit" name="delupl"'
367: # .' value="'.&mt('Delete Photo').'" />');
368: # }
369: }
370: #Image in Student view and printout.
371: else {
372: $r->print($image);
373: }
374:
375: my $links_handler = sub {
376: my ($r, $field, $message, $group, $data_ref, $fields_ref, $target, $allowed) = @_;
377: if ($group ne '') {
378: my %data = %{$data_ref};
379: my %fields = %{$fields_ref};
380: $r->print('<br /><input type="hidden" name="'.$field.
381: '" value="'.$data{$field}.'" />');
382: &display_group_links($r, $target, $group, 'edit', $refarg, %groupinfo);
383: $r->print('<br />');
384: }
385: };
386: my $title_handler = sub {};
387: my %custom_handlers = (
388: 'abb_links' => $links_handler,
389: 'aaa_title' => $title_handler
390: );
391: &Apache::lontemplate::print_template_fields($r, \%syllabus, \%syllabusfields,
392: $target, $allowed, Apache::lontemplate->RICH_TEXT_DETECT_HTML, \%custom_handlers, $group);
393:
394: if ($allowed && ($env{'form.grade_target'} ne 'tex')) {
395: $r->print(&Apache::lonhtmlcommon::htmlareaselectactive
396: ('bbb_content').'</form>');
397: }
398:
399: } else {
400: if ($group ne '') {
401: &display_group_links($r,$target,$group,'view',$refarg,%groupinfo);
402: } else {
403: my $text=&mt('No page information provided.');
404: if ($target ne 'tex') {
405: $r->print('<p class="LC_info">'.$text.'</p>');
406: } else {
407: $r->print($text)
408: }
409: }
410: }
411: if ($env{'form.grade_target'} ne 'tex') {
412: $r->print(&Apache::loncommon::end_page());
413: } else {
414: $r->print('\end{document}');
415: }
416: return OK;
417: }
418:
419: sub display_group_links {
420: my ($r,$target,$group,$context,$refarg,%groupinfo) = @_;
421: my @available = ();
422: my %menu = ();
423: %{$menu{'email'}} = (
424: text => 'Group Message',
425: href => '/adm/email?compose=group&group='.$group.
426: $refarg,
427: );
428: %{$menu{'discussion'}} = (
429: text => 'Discussion Boards',
430: href => '/adm/groupboards?group='.$group.$refarg,
431: );
432: %{$menu{'chat'}} = (
433: text => 'Group Chat Room',
434: href => "javascript:group_chat('$group')",
435: );
436: %{$menu{'files'}} = (
437: text => 'Group Portfolio',
438: href => '/adm/coursegrp_portfolio?group='.$group.
439: $refarg,
440: );
441: %{$menu{'roster'}} = (
442: text => 'Membership Roster',
443: href => '/adm/grouproster?group='.$group.$refarg,
444: );
445: foreach my $tool (sort(keys(%menu))) {
446: if ($groupinfo{functions}{$tool} eq 'on') {
447: push(@available,$tool);
448: }
449: }
450: if (@available > 0) {
451: my $output = '';
452: if ($target eq 'tex') {
453: $output = '<table cellspacing="4" cellpadding="4">';
454: } else {
455: $output = &Apache::loncommon::start_data_table();
456: }
457: foreach my $tool (@available) {
458: if ($target eq 'tex') {
459: $output .= '<tr><td>'.&mt($menu{$tool}{text}).'</td></tr>';
460: } else {
461: $output .= &Apache::loncommon::start_data_table_row()
462: .'<td><a href="'.$menu{$tool}{href}.'">'
463: .&mt($menu{$tool}{text}).'</a></td>'
464: .&Apache::loncommon::end_data_table_row();
465: }
466: }
467: if ($target eq 'tex') {
468: $output .= '</table>';
469: } else {
470: $output .= &Apache::loncommon::end_data_table();
471: }
472: if ($target eq 'tex') {
473: $r->print(&Apache::lonxml::xmlparse($r,'tex',&mt('Available functions').'<br /><br />'.$output));
474: } else {
475: $r->print('<h3>'.&mt('Available Group Tools').'</h3>'.$output);
476: }
477: } else {
478: my $output;
479: if ($context eq 'edit') {
480: $output = &mt('No group functionality.');
481: } else {
482: $output = &mt('No group functionality (e.g., e-mail, discussion, chat room or file upload) is currently available to you in this group: [_1].','<b>'.&unescape($groupinfo{'description'}).'</b>');
483: }
484: if ($target eq 'tex') {
485: $r->print(&Apache::lonxml::xmlparse($r,'tex',$output));
486: } else {
487: $r->print($output);
488: }
489: }
490: }
491:
492: sub grouppage_breadcrumbs {
493: my ($cdom,$cnum,$group,$description) = @_;
494: &Apache::lonhtmlcommon::clear_breadcrumbs();
495: &Apache::lonhtmlcommon::add_breadcrumb
496: ({href=>"/adm/coursegroups",
497: text=>"Groups",
498: title=>"Display Groups"},
499: {href=>"/adm/$cdom/$cnum/$group/smppg?ref=grouplist",
500: text=>&mt('Group:')." $description",
501: title=>"Go to group's home page"},
502: );
503: my $output .= &Apache::lonhtmlcommon::breadcrumbs(&mt('Group page - [_1]',
504: $description));
505: return $output;
506: }
507:
508: 1;
509: __END__
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