1: # The LearningOnline Network
2: # Simple Page Editor
3: #
4: # $Id: lonsimplepage.pm,v 1.99 2012/11/08 21:15:02 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);
92:
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' => ($target eq 'tex'?'':'Content'),
117: 'ccc_webreferences' => 'Web References');
118: if ($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'},['forceedit',
126: 'register','ref']);
127: # --------------------------------------------------------------- Force Student
128: my ($forceedit,$forcestudent);
129: $forceedit = $env{'form.forceedit'};
130: if (!$forceedit) {
131: $forcestudent=1;
132: }
133:
134: my $refarg;
135: if ($env{'form.ref'}) {
136: $refarg = '&ref='.$env{'form.ref'};
137: }
138:
139: my %syllabus=&Apache::lonnet::dump($db_name,$dom,$crs);
140:
141: # --------------------------------------- There is such a user, get environment
142: my ($group_view_perm,$group_edit_perm,$group_home_view,$group_home_edit,
143: $has_group_access);
144: my $brcrum = [];
145: if ($group ne '') {
146: $group_view_perm =
147: &Apache::lonnet::allowed('vcg',$env{'request.course.id'}.
148: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
149: $group_edit_perm =
150: &Apache::lonnet::allowed('mdg',$env{'request.course.id'}.
151: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
152: $group_home_view = &Apache::lonnet::allowed('vgh',
153: $env{'request.course.id'}.'/'.$group);
154: $group_home_edit = &Apache::lonnet::allowed('mgh',
155: $env{'request.course.id'}.'/'.$group);
156: if ($group_view_perm || $group_edit_perm || $group_home_view ||
157: $group_home_edit || &Apache::longroup::check_group_access($group)) {
158: $has_group_access = 1;
159: if (($env{'form.ref'} eq 'grouplist') && ($target ne 'tex') &&
160: (!$env{'form.register'})) {
161: $brcrum = &grouppage_breadcrumbs($dom,$crs,$group,$group_desc);
162: }
163: }
164: }
165:
166: if ($target ne 'tex') {
167: my $title = 'Simple Course Page';
168: if ($group ne '') {
169: $title = 'Simple Group Page';
170: }
171: my $start_page =
172: &Apache::loncommon::start_page($title,undef,
173: {'domain' => $dom,
174: 'group' => $group,
175: 'bread_crumbs' => $brcrum,
176: 'force_register' => $env{'form.register'},
177: });
178: $r->print($start_page);
179: }
180:
181: if ($group ne '') {
182: if ($has_group_access) {
183: if ((!$group_home_edit) && (!$group_home_view) &&
184: (!$group_view_perm) && (!$group_edit_perm)) {
185: &display_group_links($r,$target,$group,'view',$refarg,%groupinfo);
186: if ($env{'form.grade_target'} ne 'tex') {
187: $r->print(&Apache::loncommon::end_page());
188: } else {
189: $r->print('\end{document}');
190: }
191: return OK;
192: }
193: } else {
194: my $msg =
195: &mt('You do not currently have rights to view this group.');
196: if ($target ne 'tex') {
197: $r->print('<p class="LC_warning">'.$msg.'</p>'.
198: &Apache::loncommon::end_page());
199: } else {
200: $r->print('\textbf{'.$msg.'}\end{document}');
201: }
202: return OK;
203: }
204: my ($blocked,$blocktext) =
205: &Apache::loncommon::blocking_status('groups');
206: if ($blocked) {
207: $r->print($blocktext);
208: $r->print(&Apache::loncommon::end_page());
209: return OK;
210: }
211: }
212:
213: my $allowed;
214:
215: if ($group ne '') {
216: $allowed = $group_edit_perm;
217: if (!$allowed) {
218: $allowed = $group_home_edit;
219: }
220: } else {
221: $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
222: }
223:
224: if ($forcestudent or $target eq 'tex') { $allowed=0; }
225:
226: if (($env{'form.uploaddoc.filename'} and $target ne 'tex') &&
227: ($env{'form.storeupl'}) && ($allowed)) {
228: if ($env{'form.uploaddoc.filename'}=~/\.(gif|jpg|png|jpeg)$/i) {
229: if ($syllabus{'uploaded.photourl'}) {
230: &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
231: }
232: if ($group ne '') {
233: $syllabus{'uploaded.photourl'}=&Apache::lonnet::userfileupload(
234: 'uploaddoc','coursedoc',"grouppage/$group");
235: } else {
236: $syllabus{'uploaded.photourl'}=
237: &Apache::lonnet::userfileupload('uploaddoc','coursedoc','simplepage');
238: }
239: }
240: $syllabus{'uploaded.lastmodified'}=time;
241: &Apache::lonnet::put($db_name,\%syllabus,$dom,$crs);
242: }
243: # if ($allowed && $env{'form.delupl'}) {
244: # if ($syllabus{'uploaded.photourl'}) {
245: # &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
246: # delete($syllabus{'uploaded.photourl'});
247: # &Apache::lonnet::del('simplepage',['uploaded.photourl']);
248: # }
249: # }
250: if (($allowed) && ($env{'form.storesyl'})) {
251: foreach my $syl_field (keys(%syllabusfields)) {
252: my $field=$env{'form.'.$syl_field};
253: chomp($field);
254: $field=~s/\s+$//s;
255: $field=~s/^\s+//s;
256: $field=~s/\<br\s*\/*\>$//s;
257: $field=&Apache::lonfeedback::clear_out_html($field,1);
258: $syllabus{$syl_field}=$field;
259: }
260: $syllabus{'uploaded.lastmodified'}=time;
261: &Apache::lonnet::put($db_name,\%syllabus,$dom,$crs);
262: }
263:
264: #---Print help Text
265: if($target ne 'tex'){
266: if ($allowed) {
267: $r->print(&Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes',&mt('Help with filling in text boxes')));
268: }
269: }
270:
271: # ---------------------------------------------------------------- Get syllabus
272: if ((($syllabus{'uploaded.lastmodified'}) &&
273: (($group ne '' && ($group_home_view || $group_edit_perm ||
274: $group_view_perm)) || ($group eq ''))) || ($allowed)) {
275: #Print the title
276: my $titletext=&HTML::Entities::encode($syllabus{'aaa_title'},'<>&"');
277: if ($target ne 'tex') {
278: if ($allowed) {
279: }
280: $r->print('<h2>'.$titletext.'</h2>');
281: } else {
282: my $safeinit;
283: $r->print(&Apache::lonxml::xmlparse($r,'tex','<h1>'.$titletext.'</h1>'));
284: }
285: if ($allowed) {
286: if ($env{'form.grade_target'} ne 'tex') {
287: #editbox for title
288: $r->print('<form method="post" action="" enctype="multipart/form-data">'."\n".
289: '<input type="hidden" register="'.$env{'form.register'}.'" />');
290: &Apache::lontemplate::print_start_template($r,&mt('Title'),'LC_Box');
291: $r->print($titletext);
292: $r->print("<br /><div>");
293: &Apache::lontemplate::print_textarea_template($r, $syllabus{'aaa_title'},
294: 'aaa_title', Apache::lontemplate->RICH_TEXT_ALWAYS_OFF);
295: &Apache::lontemplate::print_saveall_template($r);
296: $r->print("</div>");
297: &Apache::lontemplate::print_end_template($r);
298: } else {
299: my $safeinit;
300: $r->print(&Apache::lonxml::xmlparse($r,'tex',$syllabus{'aaa_title'},$safeinit));
301: }
302: }
303:
304: #print the image
305: my $image='';
306: if ($syllabus{'uploaded.photourl'}) {
307: &Apache::lonnet::allowuploaded('/adm/smppg',
308: $syllabus{'uploaded.photourl'});
309:
310: $image='<img src="'.$syllabus{'uploaded.photourl'}
311: .'" alt="'.&mt('Image').'" />';
312: if ($target eq 'tex') {
313: $image=&Apache::lonxml::xmlparse($r,'tex',$image);
314: }
315: }
316:
317: if ($allowed) {
318: &Apache::lontemplate::print_start_template($r, &mt('Upload a Photo'),'LC_Box');
319: $r->print($image);
320: $r->print("<br /><br />");
321: $r->print(
322: '<input type="hidden" name="forceedit" value="edit" />'.
323: '<input type="file" name="uploaddoc" size="50" />'.
324: '<input type="submit" name="storeupl" value="'.&mt('Upload').'" />'.
325: '<input type="hidden" name="forceedit" value="edit" />');
326: &Apache::lontemplate::print_end_template($r);
327:
328:
329: # if ($syllabus{'uploaded.photourl'}) {
330: # $r->print('<input type="submit" name="delupl"'
331: # .' value="'.&mt('Delete Photo').'" />');
332: # }
333: }
334: #Image in Student view and printout.
335: else {
336: $r->print($image);
337: }
338:
339: my $links_handler = sub {
340: my ($r, $field, $message, $group, $data_ref, $fields_ref, $target, $allowed) = @_;
341: if ($group ne '') {
342: my %data = %{$data_ref};
343: my %fields = %{$fields_ref};
344: $r->print('<br /><input type="hidden" name="'.$field.
345: '" value="'.$data{$field}.'" />');
346: &display_group_links($r, $target, $group, 'edit', $refarg, %groupinfo);
347: $r->print('<br />');
348: }
349: };
350: my $title_handler = sub {};
351: my %custom_handlers = (
352: 'abb_links' => $links_handler,
353: 'aaa_title' => $title_handler
354: );
355: &Apache::lontemplate::print_template_fields($r, \%syllabus, \%syllabusfields,
356: $target, $allowed, Apache::lontemplate->RICH_TEXT_DETECT_HTML, \%custom_handlers, $group);
357:
358: if ($allowed && ($env{'form.grade_target'} ne 'tex')) {
359: $r->print(&Apache::lonhtmlcommon::htmlareaselectactive().
360: '</form>');
361: }
362:
363: } else {
364: if ($group ne '') {
365: &display_group_links($r,$target,$group,'view',$refarg,%groupinfo);
366: } else {
367: my $text=&mt('No page information provided.');
368: if ($target ne 'tex') {
369: $r->print('<p class="LC_info">'.$text.'</p>');
370: } else {
371: $r->print($text)
372: }
373: }
374: }
375: if ($env{'form.grade_target'} ne 'tex') {
376: $r->print(&Apache::loncommon::end_page());
377: } else {
378: $r->print('\end{document}');
379: }
380: return OK;
381: }
382:
383: sub display_group_links {
384: my ($r,$target,$group,$context,$refarg,%groupinfo) = @_;
385: my @available = ();
386: my %menu = ();
387: %{$menu{'email'}} = (
388: text => 'Group Message',
389: href => '/adm/email?compose=group&group='.$group.
390: $refarg,
391: );
392: %{$menu{'discussion'}} = (
393: text => 'Discussion Boards',
394: href => '/adm/groupboards?group='.$group.$refarg,
395: );
396: %{$menu{'chat'}} = (
397: text => 'Group Chat Room',
398: href => "javascript:group_chat('$group')",
399: );
400: %{$menu{'files'}} = (
401: text => 'Group Portfolio',
402: href => '/adm/coursegrp_portfolio?group='.$group.
403: $refarg,
404: );
405: %{$menu{'roster'}} = (
406: text => 'Membership Roster',
407: href => '/adm/grouproster?group='.$group.$refarg,
408: );
409: foreach my $tool (sort(keys(%menu))) {
410: if ($groupinfo{functions}{$tool} eq 'on') {
411: push(@available,$tool);
412: }
413: }
414: if (@available > 0) {
415: my $output = '';
416: if ($target eq 'tex') {
417: $output = '<table cellspacing="4" cellpadding="4">';
418: } else {
419: $output = &Apache::loncommon::start_data_table();
420: }
421: foreach my $tool (@available) {
422: if ($target eq 'tex') {
423: $output .= '<tr><td>'.&mt($menu{$tool}{text}).'</td></tr>';
424: } else {
425: $output .= &Apache::loncommon::start_data_table_row()
426: .'<td><a href="'.$menu{$tool}{href}.'">'
427: .&mt($menu{$tool}{text}).'</a></td>'
428: .&Apache::loncommon::end_data_table_row();
429: }
430: }
431: if ($target eq 'tex') {
432: $output .= '</table>';
433: } else {
434: $output .= &Apache::loncommon::end_data_table();
435: }
436: if ($target eq 'tex') {
437: $r->print(&Apache::lonxml::xmlparse($r,'tex',&mt('Available functions').'<br /><br />'.$output));
438: } else {
439: $r->print('<h3>'.&mt('Available Group Tools').'</h3>'.$output);
440: }
441: } else {
442: my $output;
443: if ($context eq 'edit') {
444: $output = &mt('No group functionality.');
445: } else {
446: $output = &mt('No group functionality (e.g., e-mail, discussion, chat room or file upload) is currently available to you in this group: [_1].','<b>'.&unescape($groupinfo{'description'}).'</b>');
447: }
448: if ($target eq 'tex') {
449: $r->print(&Apache::lonxml::xmlparse($r,'tex',$output));
450: } else {
451: $r->print($output);
452: }
453: }
454: }
455:
456: sub grouppage_breadcrumbs {
457: my ($cdom,$cnum,$group,$description) = @_;
458: &Apache::lonhtmlcommon::clear_breadcrumbs();
459: return [{href=>"/adm/coursegroups",
460: text=>"Groups",
461: title=>"Display Groups"},
462: {href=>"/adm/$cdom/$cnum/$group/smppg?ref=grouplist",
463: text=>&mt('Group:')." $description",
464: title=>"Go to group's home page"},
465: ];
466: }
467:
468: 1;
469: __END__
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