1: # The LearningOnline Network with CAPA
2: # Edit Handler for RAT Maps
3: #
4: # $Id: lonratedt.pm,v 1.15 2002/05/13 21:26:05 www 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: # (TeX Content Handler
29: #
30: # 05/29/00,05/30 Gerd Kortemeyer)
31: # 7/1,6/30 Gerd Kortemeyer
32:
33: package Apache::lonratedt;
34:
35: use strict;
36: use Apache::Constants qw(:common);
37: use Apache::lonnet;
38: use Apache::lonratsrv;
39:
40: my @order=();
41: my @resources=();
42:
43:
44: # Mapread read maps into global arrays @links and @resources, determines status
45: # sets @order - pointer to resources in right order
46: # sets @resources - array with the resources with correct idx
47: #
48: sub mapread {
49: my $fn=shift;
50:
51: my @links;
52: undef @links;
53: undef @resources;
54: undef @order;
55:
56: my ($outtext,$errtext)=&Apache::lonratsrv::loadmap($fn,'');
57: if ($errtext) { return ($errtext,2); }
58:
59: # -------------------------------------------------------------------- Read map
60: foreach (split(/\<\&\>/,$outtext)) {
61: my ($command,$number,$content)=split(/\<\:\>/,$_);
62: if ($command eq 'objcont') {
63: $resources[$number]=$content;
64: }
65: if ($command eq 'objlinks') {
66: $links[$number]=$content;
67: }
68: }
69: # ------------------------------------------------------- Is this a linear map?
70: my @starters=();
71: my @endings=();
72: undef @starters;
73: undef @endings;
74:
75: foreach (@links) {
76: if (defined($_)) {
77: my ($start,$end,$cond)=split(/\:/,$_);
78: if ((defined($starters[$start])) || (defined($endings[$end]))) {
79: return
80: ('Map has branchings. Use advanced editor.',1);
81: }
82: $starters[$start]=1;
83: $endings[$end]=1;
84: if ($cond) {
85: return
86: ('Map has conditions. Use advanced editor.',1);
87: }
88: }
89:
90: }
91: for (my $i=0; $i<=$#resources; $i++) {
92: if (defined($resources[$i])) {
93: unless (($starters[$i]) || ($endings[$i])) {
94: return
95: ('Map has unconnected resources. Use advanced editor.',1);
96: }
97: }
98: }
99:
100: # -------------------------------------------------- This is a linear map, sort
101:
102: my $startidx=0;
103: my $endidx=0;
104: for (my $i=0; $i<=$#resources; $i++) {
105: if (defined($resources[$i])) {
106: my ($title,$url,$ext,$type)=split(/\:/,$resources[$i]);
107: if ($type eq 'start') { $startidx=$i; }
108: if ($type eq 'finish') { $endidx=$i; }
109: }
110: }
111: my $k=0;
112: my $currentidx=$startidx;
113: $order[$k]=$currentidx;
114: for (my $i=0; $i<=$#resources; $i++) {
115: foreach (@links) {
116: my ($start,$end)=split(/\:/,$_);
117: if ($start==$currentidx) {
118: $currentidx=$end;
119: $k++;
120: $order[$k]=$currentidx;
121: last;
122: }
123: }
124: if ($currentidx==$endidx) { last; }
125: }
126: return $errtext;
127: }
128:
129: # --------------------------------------------------------- Build up RAT screen
130: sub ratedt {
131: my ($r,$url)=@_;
132: $r->print(<<ENDDOCUMENT);
133:
134: <html>
135: <head>
136: <script language="JavaScript">
137: var flag=0;
138: </script>
139: </head>
140: <frameset rows="1,50,*" border=0>
141: <frame name=server src="$url/loadonly/ratserver" noresize noscroll>
142: <frame name=code src="/adm/rat/code.html">
143: <frame name=mapout src="/adm/rat/map.html">
144: </frameset>
145: </html>
146:
147: ENDDOCUMENT
148: }
149:
150: # ---------------------------------------------------------------- Make buttons
151:
152: sub buttons {
153: my $adv=shift;
154: my $output='<form method=post>';
155: if ($adv==1) {
156: $output.='<input type=submit name=forceadv value="Edit">';
157: } else {
158: unless ($adv==2) {
159: $output.='<input type=submit name=forcesmp value="Simple Edit">';
160: }
161: $output.='<input type=submit name=forceadv value="Advanced Edit">';
162: }
163: return $output.'</form><hr>';
164: }
165:
166: sub smpedt {
167: my ($r,$errtext)=@_;
168: my $buttons=&buttons(2);
169:
170: # ---------------------------------------------------------- Process form input
171:
172: my @importselect=();
173: my @targetselect=();
174: undef @importselect;
175: undef @targetselect;
176: if (defined($ENV{'form.import'})) {
177: if (ref($ENV{'form.import'})) {
178: @importselect=sort($ENV->{'form.import'});
179: } else {
180: @importselect=($ENV{'form.import'});
181: }
182: }
183: if (defined($ENV{'form.target'})) {
184: if (ref($ENV{'form.target'})) {
185: @targetselect=sort($ENV->{'form.target'});
186: } else {
187: @targetselect=($ENV{'form.target'});
188: }
189: }
190: # ============================================================ Process commands
191:
192: my $targetdetail=$ENV{'form.targetdetail'};
193: my $importdetail=$ENV{'form.curimpdetail'};
194:
195: # ---------------------------------------------------- Importing from groupsort
196: if ($ENV{'form.importdetail'}) {
197:
198: $importdetail='';
199: my @curimport=split(/\&/,$ENV{'form.curimpdetail'});
200:
201: my $lastsel;
202:
203: if (defined($importselect[-1])) {
204: $lastsel=$importselect[-1];
205: } else {
206: $lastsel=$#curimport;
207: }
208:
209: for (my $i=0;$i<=$lastsel;$i++) {
210: my ($name,$url)=split(/\=/,$curimport[$i]);
211: if ($url) {
212: $importdetail.='&'.&Apache::lonnet::escape($name).'='.
213: &Apache::lonnet::escape($url);
214: }
215: }
216:
217: $importdetail.='&'.$ENV{'form.importdetail'};
218:
219: for (my $i=$lastsel+1;$i<=$#curimport;$i++) {
220: my ($name,$url)=split(/\=/,$curimport[$i]);
221: if ($url) {
222: $importdetail.='&'.&Apache::lonnet::escape($name).'='.
223: &Apache::lonnet::escape($url);
224: }
225: }
226: $importdetail=~s/\&+/\&/g;
227: $importdetail=~s/^\&//;
228:
229: # ------------------------------------------------------------------- Clear all
230: } elsif ($ENV{'form.clear'}) {
231: $importdetail='';
232: # ------------------------------------------------------------ Discard selected
233: } elsif ($ENV{'form.discard'}) {
234: $importdetail='';
235: my @curimport=split(/\&/,$ENV{'form.curimpdetail'});
236: foreach (@importselect) {
237: $curimport[$_]='';
238: }
239: for (my $i=0;$i<=$#curimport;$i++) {
240: my ($name,$url)=split(/\=/,$curimport[$i]);
241: if ($url) {
242: $importdetail.='&'.&Apache::lonnet::escape($name).'='.
243: &Apache::lonnet::escape($url);
244: }
245: }
246: # ---------------------------
247: }
248:
249: # ------------------------------------------------------------ Assemble windows
250:
251: my $idx=-1;
252: my $importwindow=join("\n",map {
253: $idx++;
254: if ($_) {
255: my ($name,$url)=split(/\=/,$_);
256: unless ($name) { $name=(split(/\//,$url))[-1]; }
257: unless ($name) { $name='EMPTY'; }
258: '<option value="'.$idx.'">'.&Apache::lonnet::unescape($name).
259: '</option>';
260: }
261: } split(/\&/,$importdetail));
262:
263: $idx=0;
264: my $targetwindow=join("\n",map {
265: my ($name,$url)=split(/\:/,$resources[$_]);
266: unless ($name) { $name=(split(/\//,$url))[-1]; }
267: unless ($name) { $name='EMPTY'; }
268: $targetdetail.='&'.&Apache::lonnet::escape($name).'='.
269: &Apache::lonnet::escape($url);
270: $idx++;
271: '<option value="'.$idx.'_'.$_.'">'.$name.'</option>';
272: } @order);
273:
274: # ----------------------------------------------------- Start simple RAT screen
275: $r->print(<<ENDSMPHEAD);
276: <html>
277: <head>
278: <script>
279: var srch;
280: var srchflag=-1; // 1 means currently open
281: // 0 means closed (but has been open)
282: // -1 means never yet opened/defined
283: var srchmode='';
284:
285: var idx;
286: var idxflag=-1; // 1 means currently open
287: // 0 means closed (but has been open)
288: // -1 means never yet opened/defined
289: var idxmode='';
290:
291: // ------------------------------------------------------ Clears indexer window
292: function idxclear() {
293: idx.document.clear();
294: }
295:
296: // ------------------------------------------------------- Clears search window
297: function srchclear() {
298: srch.document.clear();
299: }
300:
301: // ------------------------------------------------------ Closes indexer window
302: function idxclose() {
303: if (idx && !idx.closed) {
304: idxflag=0;
305: idx.close();
306: }
307: }
308:
309: // ------------------------------------------------------- Closes search window
310: function srchclose() {
311: if (srch && !srch.closed) {
312: srchflag=0;
313: srch.close();
314: }
315: }
316:
317: // -------------------------------------------------------- Open indexer window
318: function idxopen(mode) {
319: var options="scrollbars=1,resizable=1,menubar=0";
320: idxmode=mode;
321: idxflag=1;
322: idx=open("/res/?launch=1&mode=simple&catalogmode="+mode,"idxout",options);
323: idx.focus();
324: }
325:
326: // --------------------------------------------------------- Open search window
327: function srchopen(mode) {
328: var options="scrollbars=1,resizable=1,menubar=0";
329: srchmode=mode;
330: srchflag=1;
331: srch=open("/adm/searchcat?launch=1&mode=simple&catalogmode="+mode,"srchout",options);
332: srch.focus();
333: }
334: // ----------------------------------------------------- launch indexer browser
335: function groupsearch() {
336: srchcheck('groupsearch');
337: }
338:
339: function groupimport() {
340: idxcheck('groupimport');
341: }
342: // ------------------------------------------------------- Do srch status check
343: function srchcheck(mode) {
344: if (!srch || srch.closed || srchmode!=mode) {
345: srchopen(mode);
346: }
347: srch.focus();
348: }
349:
350: // -------------------------------------------------------- Do idx status check
351: function idxcheck(mode) {
352: if (!idx || idx.closed || idxmode!=mode) {
353: idxopen(mode);
354: }
355: idx.focus();
356: }
357:
358:
359: var editbrowser;
360: function openbrowser(formname,elementname,only,omit) {
361: var url = '/res/?';
362: if (editbrowser == null) {
363: url += 'launch=1&';
364: }
365: url += 'catalogmode=interactive&';
366: url += 'mode=edit&';
367: url += 'form=' + formname + '&';
368: if (only != null) {
369: url += 'only=' + only + '&';
370: }
371: if (omit != null) {
372: url += 'omit=' + omit + '&';
373: }
374: url += 'element=' + elementname + '';
375: var title = 'Browser';
376: var options = 'scrollbars=1,resizable=1,menubar=0';
377: options += ',width=700,height=600';
378: editbrowser = open(url,title,options,'1');
379: editbrowser.focus();
380: }
381: </script>
382: </head>
383: <body bgcolor='#FFFFFF'>
384: $buttons
385: <font color=red>$errtext</font>
386: <form name=simpleedit method=post>
387: <input type=hidden name=forcesmp value=1>
388: <table>
389: <tr><th width="40%">Import</th>
390: <th> </th>
391: <th width="40%">Target</th></tr>
392: <tr><td bgcolor="#FFFFCC">
393: <input type=button onClick="javascript:groupsearch()" value="Group Search">
394: <input type=button onClick="javascript:groupimport();" value="Group Import">
395: after selected
396: <hr>
397: <input type=text size=20 name=importmap>
398: <input type=button
399: onClick="javascript:openbrowser('simpleedit','importmap','sequence,page','')"
400: value="Browse"><input type=submit name=loadmap value="Load Map"><hr>
401: <input type=submit name="discard" value="Discard Selected">
402: <input type=submit name="clear" value="Clear All">
403: <input type=button onClick="javascript:viewimport()" value="View">
404: </td><td> </td><td bgcolor="#FFFFCC">
405: <input type=button onClick="javascript:viewtarget()" value="View">
406: </td></tr>
407: <tr><td bgcolor="#FFFFCC"><select name="import" multiple>
408: $importwindow
409: </select>
410: </td>
411: <td bgcolor="#FFFFAA" align="center">
412: Cut selected<br>
413: <input type=submit name=cut value='<<<'><p>
414: <hr>
415: Paste after selected<br>
416: <input type=submit name=paste value='>>>'>
417: </td>
418: <td bgcolor="#FFFFCC"><select name="target" multiple>
419: $targetwindow
420: </select>
421: </table>
422: <input type=hidden name=importdetail value="">
423: <input type=hidden name=curimpdetail value="$importdetail">
424: <input type=hidden name=targetdetail value="$targetdetail">
425: </form>
426: </body></html>
427: ENDSMPHEAD
428: }
429:
430: # ----------------------------------------------------------------- No such dir
431: sub nodir {
432: my ($r,$dir)=@_;
433: $dir=~s/^\/home\/\w+\/public\_html//;
434: $r->print(<<ENDNODIR);
435: <html>
436: <body bgcolor='#FFFFFF'>
437: <h1>No such directory: $dir</h1>
438: </body>
439: </html>
440: ENDNODIR
441: }
442:
443: # ---------------------------------------------------------------- View Handler
444:
445: sub viewmap {
446: my ($r,$adv,$errtext)=@_;
447: $r->print('<html><body bgcolor="#FFFFFF">'.&buttons($adv));
448: if ($errtext) {
449: $r->print($errtext.'<hr>');
450: }
451: foreach (@resources) {
452: if (defined($_)) {
453: my ($title,$url)=split(/\:/,$_);
454: $title=~s/\&colon\;/\:/g;
455: $url=~s/\&colon\;/\:/g;
456: unless ($title) { $title=(split(/\//,$url))[-1] };
457: unless ($title) { $title='<i>Empty</i>'; }
458: if ($url) {
459: $r->print('<a href="'.&Apache::lonratsrv::qtescape($url).'">');
460: }
461: $r->print(&Apache::lonratsrv::qtescape($title));
462: if ($url) { $r->print('</a>'); }
463: $r->print('<br>');
464: }
465: }
466: $r->print('</body></html>');
467: }
468:
469: # ================================================================ Main Handler
470:
471: sub handler {
472: my $r=shift;
473: $r->content_type('text/html');
474: $r->send_http_header;
475:
476: return OK if $r->header_only;
477:
478: my $url=$r->uri;
479: my $fn=&Apache::lonnet::filelocation('',$url);
480:
481: my ($dir)=($fn=~/^(.+)\/[^\/]+$/);
482: unless (-e $dir) {
483: &nodir($r,$dir);
484: return OK;
485: }
486:
487: # ------------------------------------------- Determine which tools can be used
488: my $adv=0;
489:
490: unless ($ENV{'form.forcesmp'}) {
491: if ($ENV{'form.forceadv'}) {
492: $adv=1;
493: } elsif (my $fh=Apache::File->new($fn)) {
494: my $allmap=join('',<$fh>);
495: $adv=($allmap=~/\<map[^\>]+mode\s*\=\s*(\'|\")rat/is);
496: }
497: }
498:
499: my $errtext='';
500: my $fatal=0;
501:
502: # -------------------------------------------------------------------- Load map
503: ($errtext,$fatal)=&mapread($fn,$errtext);
504:
505: if ($fatal==1) { $adv=1; }
506:
507: # ----------------------------------- adv==1 now means "graphical MUST be used"
508:
509: if ($ENV{'form.forceadv'}) {
510: &ratedt($r,$url);
511: } elsif ($ENV{'form.forcesmp'}) {
512: &smpedt($r,$errtext);
513: } else {
514: &viewmap($r,$adv,$errtext);
515: }
516: return OK;
517: }
518:
519: 1;
520: __END__
521:
522:
523:
524:
525:
526:
527:
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