1: # The LearningOnline Network with CAPA
2: # Edit Handler for RAT Maps
3: #
4: # $Id: lonratedt.pm,v 1.54 2004/04/23 22:34:15 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: =pod
36:
37: =head1 NAME
38:
39: Apache::lonratedt: advanced resource assembly tool
40:
41: =head1 SYNOPSIS
42:
43: lonratedt provides the routines and the handler for the Advanced
44: Resource Assembly Tool (RAT), and ties the various pieces together
45: with Javascript.
46:
47: =head1 OVERVIEW
48:
49: =head2 Map Representation
50:
51: =begin latex
52:
53: %
54: \begin{figure}
55: \begin{center}\includegraphics[%
56: width=0.55\paperwidth,bb = 0 0 200 100, draft, type=eps]{Map_Example}\end{center}
57:
58:
59: \caption{\label{Map_In_Advanced_Editor}Example of a Map in the Advanced Editor}
60: \end{figure}
61: %
62: \begin{figure}
63: \begin{lyxcode}
64: <map>
65:
66: ~~<resource~id=\char`\"{}1\char`\"{}
67:
68: ~~~~src=\char`\"{}/res/msu/korte/phy231welcome.html\char`\"{}
69:
70: ~~~~type=\char`\"{}start\char`\"{}
71:
72: ~~~~title=\char`\"{}Start\char`\"{}>
73:
74: ~~~~</resource>
75:
76: ~~<resource~id=\char`\"{}2\char`\"{}
77:
78: ~~~~src=\char`\"{}\char`\"{}~type=\char`\"{}finish\char`\"{}
79:
80: ~~~~title=\char`\"{}Finish\char`\"{}>
81:
82: ~~~~</resource>
83:
84: ~~<resource~id=\char`\"{}6\char`\"{}
85:
86: ~~~~src=\char`\"{}/res/msu/korte/tests/units.problem\char`\"{}
87:
88: ~~~~type=\char`\"{}mandatory\char`\"{}
89:
90: ~~~~title=\char`\"{}Physical~Units~Test\char`\"{}>
91:
92: ~~~~</resource>
93:
94: ~~<resource~id=\char`\"{}9\char`\"{}
95:
96: ~~~~src=\char`\"{}/res/msu/korte/chapters/onedim.sequence\char`\"{}
97:
98: ~~~~title=\char`\"{}Motion~in~One~Dimension\char`\"{}>
99:
100: ~~~~</resource>
101:
102: ~~<resource~id=\char`\"{}11\char`\"{}
103:
104: ~~~~src=\char`\"{}/res/msu/bauer/bridges/units.sequence\char`\"{}
105:
106: ~~~~title=\char`\"{}Physical~Units~Refresher\char`\"{}>
107:
108: ~~~~</resource>
109:
110: ~~<condition~id=\char`\"{}19\char`\"{}
111:
112: ~~~~type=\char`\"{}stop\char`\"{}
113:
114: ~~~~value=\char`\"{}user.assessments{[}this./res/msu/korte/tests/units.problem{]}.status=solved\char`\"{}>
115:
116: ~~~~</condition>
117:
118: ~~<link~from=\char`\"{}1\char`\"{}~to=\char`\"{}6\char`\"{}></link>
119:
120: ~~<link~from=\char`\"{}6\char`\"{}~to=\char`\"{}9\char`\"{}~condition=\char`\"{}19\char`\"{}></link>
121:
122: ~~<link~from=\char`\"{}6\char`\"{}~to=\char`\"{}11\char`\"{}></link>
123:
124: ~~<link~from=\char`\"{}11\char`\"{}~to=\char`\"{}6\char`\"{}></link>
125:
126: ~~</map>
127: \end{lyxcode}
128:
129: \caption{\label{XML}XML for Map in Figure \ref{Map_In_Advanced_Editor}}
130: \end{figure}
131:
132: =end latex
133:
134: Fig. "XML for Map in Figure" shows the XML representation of the
135: resource map shown in Fig. "Example of a Map in the Advanced Editor",
136: which is the format in which maps are stored. In the figure, however,
137: additional graphical map layout information generated by the Advanced
138: Resource Assembly Tool is not displayed. This graphical information is
139: optional to re-generate the same graphical layout when the map is
140: brought up again in the Resource Assembly Tool, and is not needed for
141: any other system functionality.
142:
143: Maps can be generated by tools other than the Resource Assembly
144: Tool. In particular, an author might have some other representation of
145: a course sequence, which can be converted into a map using scripts. If
146: this map then were to be brought up in the Resource Assembly Tool, the
147: Tool would automatically generate a graphical layout for it. Each
148: entry of the map (resources, conditions and links) is stored in a
149: separate tag.
150:
151: Resources and conditionsX<conditions> have to have unique ID
152: numbers. These numbers are automatically generated by the Resource
153: Assembly Tool when the entry is first created, or added to the entries
154: when a map generated outside the Resource Assembly Tool is first
155: retrieved. They can also be assigned by custom scripts or added in by
156: hand.
157:
158: In the XML example, entry 1 is the start resource of the map. When
159: this map is accessed, the source (src) URL of this tag will be the
160: first resource rendered. Entry 2 is the finish resource of this
161: map. This resource will be the last resource in the sequence of
162: resources. Entry 6 is a problem resource with the given URL and title,
163: as well as the priority "mandatory". Entry 19 is a condition, which is
164: used by the link between entries 6, the problem, and 9, a
165: sequence. I<The final syntax for conditions has not yet been
166: determined.>
167:
168: =cut
169:
170: use strict;
171: use Apache::Constants qw(:common);
172: use Apache::lonnet;
173: use Apache::lonratsrv;
174: use Apache::lonsequence;
175: use Apache::loncommon;
176: use Apache::lonlocal;
177: use File::Copy;
178:
179: use vars qw(@order @resources @resparms);
180:
181:
182: # Mapread read maps into global arrays @links and @resources, determines status
183: # sets @order - pointer to resources in right order
184: # sets @resources - array with the resources with correct idx
185: #
186: sub mapread {
187: my $fn=shift;
188:
189: my @links;
190: undef @links;
191: undef @resources;
192: undef @order;
193: @resources=('');
194: @order=();
195:
196: my ($outtext,$errtext)=&Apache::lonratsrv::loadmap($fn,'');
197: if ($errtext) { return ($errtext,2); }
198:
199: # -------------------------------------------------------------------- Read map
200: foreach (split(/\<\&\>/,$outtext)) {
201: my ($command,$number,$content)=split(/\<\:\>/,$_);
202: if ($command eq 'objcont') {
203: $resources[$number]=$content;
204: }
205: if ($command eq 'objlinks') {
206: $links[$number]=$content;
207: }
208: if ($command eq 'objparms') {
209: $resparms[$number]=$content;
210: }
211: }
212: # ------------------------------------------------------- Is this a linear map?
213: my @starters=();
214: my @endings=();
215: undef @starters;
216: undef @endings;
217:
218: foreach (@links) {
219: if (defined($_)) {
220: my ($start,$end,$cond)=split(/\:/,$_);
221: if ((defined($starters[$start])) || (defined($endings[$end]))) {
222: return
223: (&mt('Map has branchings. Use advanced editor.'),1);
224: }
225: $starters[$start]=1;
226: $endings[$end]=1;
227: if ($cond) {
228: return
229: (&mt('Map has conditions. Use advanced editor.'),1);
230: }
231: }
232:
233: }
234: for (my $i=1; $i<=$#resources; $i++) {
235: if (defined($resources[$i])) {
236: unless (($starters[$i]) || ($endings[$i])) {
237: return
238: (&mt('Map has unconnected resources. Use advanced editor.'),1);
239: }
240: }
241: }
242: # ---------------------------------------------- Did we just read an empty map?
243: if ($#resources<1) {
244: undef $resources[0];
245: $resources[1]=':::start';
246: $resources[2]=':::finish';
247: }
248: # -------------------------------------------------- This is a linear map, sort
249:
250: my $startidx=0;
251: my $endidx=0;
252: for (my $i=0; $i<=$#resources; $i++) {
253: if (defined($resources[$i])) {
254: my ($title,$url,$ext,$type)=split(/\:/,$resources[$i]);
255: if ($type eq 'start') { $startidx=$i; }
256: if ($type eq 'finish') { $endidx=$i; }
257: }
258: }
259: my $k=0;
260: my $currentidx=$startidx;
261: $order[$k]=$currentidx;
262: for (my $i=0; $i<=$#resources; $i++) {
263: foreach (@links) {
264: my ($start,$end)=split(/\:/,$_);
265: if ($start==$currentidx) {
266: $currentidx=$end;
267: $k++;
268: $order[$k]=$currentidx;
269: last;
270: }
271: }
272: if ($currentidx==$endidx) { last; }
273: }
274: return $errtext;
275: }
276:
277: # ---------------------------------------------- Read a map as well as possible
278: # Also used by the sequence handler
279: # Call lonsequence::attemptread to read from resource space
280: #
281: sub attemptread {
282: my $fn=shift;
283:
284: my @links;
285: undef @links;
286: my @theseres;
287: undef @theseres;
288:
289: my ($outtext,$errtext)=&Apache::lonratsrv::loadmap($fn,'');
290: if ($errtext) { return @theseres }
291:
292: # -------------------------------------------------------------------- Read map
293: foreach (split(/\<\&\>/,$outtext)) {
294: my ($command,$number,$content)=split(/\<\:\>/,$_);
295: if ($command eq 'objcont') {
296: $theseres[$number]=$content;
297: }
298: if ($command eq 'objlinks') {
299: $links[$number]=$content;
300: }
301: }
302:
303: # --------------------------------------------------------------- Sort, sort of
304:
305: my @objsort=();
306: undef @objsort;
307:
308: my @data1=();
309: my @data2=();
310: undef @data1;
311: undef @data2;
312:
313: my $k;
314: my $kj;
315: my $j;
316: my $ij;
317:
318: for ($k=1;$k<=$#theseres;$k++) {
319: if (defined($theseres[$k])) {
320: $objsort[$#objsort+1]=$k;
321: }
322: }
323:
324: for ($k=1;$k<=$#links;$k++) {
325: if (defined($links[$k])) {
326: @data1=split(/\:/,$links[$k]);
327: $kj=-1;
328: for (my $j=0;$j<=$#objsort;$j++) {
329: if ((split(/\:/,$objsort[$j]))[0]==$data1[0]) {
330: $kj=$j;
331: }
332: }
333: if ($kj!=-1) { $objsort[$kj].=':'.$data1[1]; }
334: }
335: }
336: for ($k=0;$k<=$#objsort;$k++) {
337: for ($j=0;$j<=$#objsort;$j++) {
338: if ($k!=$j) {
339: @data1=split(/\:/,$objsort[$k]);
340: @data2=split(/\:/,$objsort[$j]);
341: my $dol=$#data1+1;
342: my $dtl=$#data2+1;
343: if ($dol+$dtl<1000) {
344: for ($kj=1;$kj<$dol;$kj++) {
345: if ($data1[$kj]==$data2[0]) {
346: for ($ij=1;$ij<$dtl;$ij++) {
347: $data1[$#data1+1]=$data2[$ij];
348: }
349: }
350: }
351: for ($kj=1;$kj<$dtl;$kj++) {
352: if ($data2[$kj]==$data1[0]) {
353: for ($ij=1;$ij<$dol;$ij++) {
354: $data2[$#data2+1]=$data1[$ij];
355: }
356: }
357: }
358: $objsort[$k]=join(':',@data1);
359: $objsort[$j]=join(':',@data2);
360: }
361: }
362: }
363: }
364: # ---------------------------------------------------------------- Now sort out
365:
366: @objsort=sort {
367: my @data1=split(/\:/,$a);
368: my @data2=split(/\:/,$b);
369: my $rvalue=0;
370: my $k;
371: for ($k=1;$k<=$#data1;$k++) {
372: if ($data1[$k]==$data2[0]) { $rvalue--; }
373: }
374: for ($k=1;$k<=$#data2;$k++) {
375: if ($data2[$k]==$data1[0]) { $rvalue++; }
376: }
377: if ($rvalue==0) { $rvalue=$#data2-$#data1; }
378: $rvalue;
379: } @objsort;
380:
381: my @outres=();
382: undef @outres;
383:
384: for ($k=0;$k<=$#objsort;$k++) {
385: $outres[$k]=$theseres[(split(/\:/,$objsort[$k]))[0]];
386: }
387: return @outres;
388: }
389:
390: # --------------------------------------------------------- Build up RAT screen
391: sub ratedt {
392: my ($r,$url)=@_;
393: $r->print(<<ENDDOCUMENT);
394:
395: <html>
396: <head>
397: <script language="JavaScript">
398: var flag=0;
399: </script>
400: </head>
401: <frameset rows="1,50,*" border=0>
402: <frame name=server src="$url/loadonly/ratserver" noresize noscroll>
403: <frame name=code src="/adm/rat/code.html">
404: <frame name=mapout src="/adm/rat/map.html">
405: </frameset>
406: </html>
407:
408: ENDDOCUMENT
409: }
410:
411: # ---------------------------------------------------------------- Make buttons
412:
413: sub buttons {
414: my $adv=shift;
415: my $output='<form method=post>';
416: if ($adv==1) {
417: $output.='<input type=submit name=forceadv value="'.&mt('Edit').'">'.
418: &Apache::loncommon::help_open_topic('Sequence_Advanced_Editor_Creation');;
419: } else {
420: unless ($adv==2) {
421: $output.='<input type=submit name=forcesmp value="'.&mt('Simple Edit').'">'.
422: &Apache::loncommon::help_open_topic('Sequence_Simple_Editor_Creation');
423: }
424: $output.='<input type=submit name=forceadv value="'.&mt('Advanced Edit').'">'.
425: &Apache::loncommon::help_open_topic('Sequence_Advanced_Editor_Creation');
426: }
427: return $output.'</form><hr>';
428: }
429:
430: # ----------------------------------------------------------- Paste into target
431: # modifies @order, @resources
432:
433: sub pastetarget {
434: my ($after,@which)=@_;
435: my @insertorder=();
436: foreach (@which) {
437: if (defined($_)) {
438: my ($name,$url)=split(/\=/,$_);
439: $name=&Apache::lonnet::unescape($name);
440: $url=&Apache::lonnet::unescape($url);
441: if ($url) {
442: my $idx=$#resources+1;
443: $insertorder[$#insertorder+1]=$idx;
444: my $ext='false';
445: if ($url=~/^http\:\/\//) { $ext='true'; }
446: $url=~s/\:/\:/g;
447: $name=~s/\:/\:/g;
448: $resources[$idx]=$name.':'.$url.':'.$ext.':normal:res';
449: }
450: }
451: }
452: my @oldorder=splice(@order,$after);
453: @order=(@order,@insertorder,@oldorder);
454: }
455:
456: # ------------------------------------------------ Get start and finish correct
457: # modifies @resources
458:
459: sub startfinish {
460: # Remove all start and finish
461: foreach (@order) {
462: my ($name,$url,$ext)=split(/\:/,$resources[$_]);
463: if ($url=~/http\&colon\:\/\//) { $ext='true'; }
464: $resources[$_]=$name.':'.$url.':'.$ext.':normal:res';
465: }
466: # Garbage collection
467: my $stillchange=1;
468: while (($#order>1) && ($stillchange)) {
469: $stillchange=0;
470: for (my $i=0;$i<=$#order;$i++) {
471: my ($name,$url,$ext)=split(/\:/,$resources[$order[$i]]);
472: unless ($url) {
473: # Take out empty resource
474: for (my $j=$i+1;$j<=$#order;$j++) {
475: $order[$j-1]=$order[$j];
476: }
477: $#order--;
478: $stillchange=1;
479: last;
480: }
481: }
482: }
483: # Put in a start resource
484: my ($name,$url,$ext)=split(/\:/,$resources[$order[0]]);
485: $resources[$order[0]]=$name.':'.$url.':'.$ext.':start:res';
486: # Make sure this has at least start and finish
487: if ($#order==0) {
488: $resources[$#resources+1]='::false';
489: $order[1]=$#resources;
490: }
491: # Make the last one a finish resource
492: ($name,$url,$ext)=split(/\:/,$resources[$order[$#order]]);
493: $resources[$order[$#order]]=$name.':'.$url.':'.$ext.':finish:res';
494: }
495:
496: # ------------------------------------------------------------------- Store map
497:
498: sub storemap {
499: my $realfn=shift;
500: my $fn=$realfn;
501: # unless this is forced to work from the original file, use a temporary file
502: # instead
503: unless (shift) {
504: $fn=$realfn.'.tmp';
505: unless (-e $fn) {
506: copy($realfn,$fn);
507: }
508: }
509: # store data either into tmp or real file
510: &startfinish();
511: my $output='graphdef<:>no';
512: my $k=1;
513: for (my $i=0; $i<=$#order; $i++) {
514: if (defined($resources[$order[$i]])) {
515: $output.='<&>objcont<:>'.$order[$i].'<:>'.$resources[$order[$i]];
516: }
517: if (defined($resparms[$order[$i]])) {
518: $output.='<&>objparms<:>'.$order[$i].'<:>'.$resparms[$order[$i]];
519: }
520: if (defined($order[$i+1])) {
521: if (defined($resources[$order[$i+1]])) {
522: $output.='<&>objlinks<:>'.$k.'<:>'.
523: $order[$i].':'.$order[$i+1].':0';
524: $k++;
525: }
526: }
527: }
528: $output=~s/http\&colon\;\/\///g;
529: $ENV{'form.output'}=$output;
530: return
531: &Apache::lonratsrv::loadmap($fn,&Apache::lonratsrv::savemap($fn,''));
532: }
533:
534: sub editscript {
535: my $mode=shift;
536: my $resurl=&Apache::loncommon::lastresurl();
537: return(<<ENDSCRIPT);
538: var srch;
539: var srchflag=-1; // 1 means currently open
540: // 0 means closed (but has been open)
541: // -1 means never yet opened/defined
542: var srchmode='';
543:
544: var idx;
545: var idxflag=-1; // 1 means currently open
546: // 0 means closed (but has been open)
547: // -1 means never yet opened/defined
548: var idxmode='';
549:
550: // ------------------------------------------------------ Clears indexer window
551: function idxclear() {
552: idx.document.clear();
553: }
554:
555: // ------------------------------------------------------- Clears search window
556: function srchclear() {
557: srch.document.clear();
558: }
559:
560: // ------------------------------------------------------ Closes indexer window
561: function idxclose() {
562: if (idx && !idx.closed) {
563: idxflag=0;
564: idx.close();
565: }
566: }
567:
568: // ------------------------------------------------------- Closes search window
569: function srchclose() {
570: if (srch && !srch.closed) {
571: srchflag=0;
572: srch.close();
573: }
574: }
575:
576: // -------------------------------------------------------- Open indexer window
577: function idxopen(mode) {
578: var options="scrollbars=1,resizable=1,menubar=0";
579: idxmode=mode;
580: idxflag=1;
581: idx=open("$resurl/?launch=1&mode=$mode&catalogmode="+mode,"idxout",options);
582: idx.focus();
583: }
584:
585: // --------------------------------------------------------- Open search window
586: function srchopen(mode) {
587: var options="scrollbars=1,resizable=1,menubar=0";
588: srchmode=mode;
589: srchflag=1;
590: srch=open("/adm/searchcat?launch=1&mode=$mode&catalogmode="+mode,"srchout",options);
591: srch.focus();
592: }
593: // ----------------------------------------------------- launch indexer browser
594: function groupsearch() {
595: srchcheck('groupsearch');
596: }
597:
598: function groupimport() {
599: idxcheck('groupimport');
600: }
601: // ------------------------------------------------------- Do srch status check
602: function srchcheck(mode) {
603: if (!srch || srch.closed || srchmode!=mode) {
604: srchopen(mode);
605: }
606: srch.focus();
607: }
608:
609: // -------------------------------------------------------- Do idx status check
610: function idxcheck(mode) {
611: if (!idx || idx.closed || idxmode!=mode) {
612: idxopen(mode);
613: }
614: idx.focus();
615: }
616:
617:
618: var editbrowser;
619: function openbrowser(formname,elementname,only,omit) {
620: var url = '$resurl/?';
621: if (editbrowser == null) {
622: url += 'launch=1&';
623: }
624: url += 'catalogmode=interactive&';
625: url += 'mode=edit&';
626: url += 'form=' + formname + '&';
627: if (only != null) {
628: url += 'only=' + only + '&';
629: }
630: if (omit != null) {
631: url += 'omit=' + omit + '&';
632: }
633: url += 'element=' + elementname + '';
634: var title = 'Browser';
635: var options = 'scrollbars=1,resizable=1,menubar=0';
636: options += ',width=700,height=600';
637: editbrowser = open(url,title,options,'1');
638: editbrowser.focus();
639: }
640: ENDSCRIPT
641: }
642: # ------------------------------------------------------- Simple edit processor
643:
644: sub smpedt {
645: my ($r,$url,$errtext)=@_;
646: my $buttons=&buttons(2);
647: my $tmpfn=&Apache::lonnet::filelocation('',$url).'.tmp';
648: my $targetmsg='';
649: if ($ENV{'form.save'}) {
650: $targetmsg='<b>Saving ...</b><br>';
651: copy($tmpfn,&Apache::lonnet::filelocation('',$url));
652: unlink($tmpfn);
653: my ($errtext,$fatal)=
654: &mapread(&Apache::lonnet::filelocation('',$url),'');
655: }
656: if ($ENV{'form.revert'}) {
657: $targetmsg='<b>Reverting ...</b><br>';
658: unlink($tmpfn);
659: my ($errtext,$fatal)=
660: &mapread(&Apache::lonnet::filelocation('',$url),'');
661: }
662: if (-e $tmpfn) {
663: $targetmsg=
664: '<b><font color="red">'.&mt('You are working with an unsaved version of your map.').'</font></b><br>';
665: my ($errtext,$fatal)=&mapread($tmpfn,'');
666: }
667: # ---------------------------------------------------------- Process form input
668:
669: my @importselect=();
670: my @targetselect=();
671: undef @importselect;
672: undef @targetselect;
673: if (defined($ENV{'form.importsel'})) {
674: if (ref($ENV{'form.importsel'})) {
675: @importselect=sort(@{$ENV{'form.importsel'}});
676: } else {
677: @importselect=($ENV{'form.importsel'});
678: }
679: }
680: if (defined($ENV{'form.target'})) {
681: if (ref($ENV{'form.target'})) {
682: @targetselect=sort(@{$ENV{'form.target'}});
683: } else {
684: @targetselect=($ENV{'form.target'});
685: }
686: }
687: # ============================================================ Process commands
688:
689: my $targetdetail=$ENV{'form.targetdetail'};
690: my $importdetail=$ENV{'form.curimpdetail'};
691:
692: # ---------------------------------------------------- Importing from groupsort
693: if (($ENV{'form.importdetail'}) && (!$ENV{'form.impfortarget'})) {
694:
695: $importdetail='';
696: my @curimport=split(/\&/,$ENV{'form.curimpdetail'});
697:
698: my $lastsel;
699:
700: if (defined($importselect[-1])) {
701: $lastsel=$importselect[-1];
702: } else {
703: $lastsel=$#curimport;
704: }
705:
706: for (my $i=0;$i<=$lastsel;$i++) {
707: my ($name,$url)=split(/\=/,$curimport[$i]);
708: if ($url) {
709: $importdetail.='&'.$name.'='.$url;
710: }
711: }
712:
713: $importdetail.='&'.$ENV{'form.importdetail'};
714:
715: for (my $i=$lastsel+1;$i<=$#curimport;$i++) {
716: my ($name,$url)=split(/\=/,$curimport[$i]);
717: if ($url) {
718: $importdetail.='&'.$name.'='.$url;
719: }
720: }
721: $importdetail=~s/\&+/\&/g;
722: $importdetail=~s/^\&//;
723:
724: # ------------------------------------------------------------------- Clear all
725: } elsif ($ENV{'form.clear'}) {
726: $importdetail='';
727: # ------------------------------------------------------------ Discard selected
728: } elsif ($ENV{'form.discard'}) {
729: $importdetail='';
730: my @curimport=split(/\&/,$ENV{'form.curimpdetail'});
731: foreach (@importselect) {
732: $curimport[$_]='';
733: }
734: for (my $i=0;$i<=$#curimport;$i++) {
735: my ($name,$url)=split(/\=/,$curimport[$i]);
736: if ($url) {
737: $importdetail.='&'.$name.'='.$url;
738: }
739: }
740: # --------------------------------------------------------- Loading another map
741: } elsif ($ENV{'form.loadmap'}) {
742: $importdetail='';
743: my @curimport=split(/\&/,$ENV{'form.curimpdetail'});
744:
745: my $lastsel;
746:
747: if (defined($importselect[-1])) {
748: $lastsel=$importselect[-1];
749: } else {
750: $lastsel=$#curimport;
751: }
752:
753: for (my $i=0;$i<=$lastsel;$i++) {
754: my ($name,$url)=split(/\=/,$curimport[$i]);
755: if ($url) {
756: $importdetail.='&'.$name.'='.$url;
757: }
758: }
759:
760: foreach (
761: &Apache::lonsequence::attemptread(&Apache::lonnet::filelocation('',$ENV{'form.importmap'}))) {
762: my ($name,$url)=split(/\:/,$_);
763: if ($url) {
764: $importdetail.='&'.&Apache::lonnet::escape($name).'='.
765: &Apache::lonnet::escape($url);
766: }
767: }
768:
769: for (my $i=$lastsel+1;$i<=$#curimport;$i++) {
770: my ($name,$url)=split(/\=/,$curimport[$i]);
771: if ($url) {
772: $importdetail.='&'.$name.'='.$url;
773: }
774: }
775: $importdetail=~s/\&+/\&/g;
776: $importdetail=~s/^\&//;
777:
778: # ------------------------------------------------ Groupimport/search to target
779: } elsif ($ENV{'form.importdetail'}) {
780: my $lastsel;
781: if (defined($targetselect[-1])) {
782: $lastsel=$targetselect[-1];
783: } else {
784: $lastsel=$#order+1;
785: }
786: &pastetarget($lastsel,split(/\&/,$ENV{'form.importdetail'}));
787: &storemap(&Apache::lonnet::filelocation('',$url));
788: # ------------------------------------------------------------------------- Cut
789: } elsif (($ENV{'form.cut'}) || ($ENV{'form.copy'})) {
790: $importdetail='';
791: my @curimport=split(/\&/,$ENV{'form.curimpdetail'});
792:
793: my $lastsel;
794:
795: if (defined($importselect[-1])) {
796: $lastsel=$importselect[-1];
797: } else {
798: $lastsel=$#curimport;
799: }
800:
801: for (my $i=0;$i<=$lastsel;$i++) {
802: my ($name,$url)=split(/\=/,$curimport[$i]);
803: if ($url) {
804: $importdetail.='&'.$name.'='.$url;
805: }
806: }
807:
808: foreach (@targetselect) {
809: my ($name,$url)=split(/\:/,$resources[$order[$_-1]]);
810: if ($url) {
811: $importdetail.='&'.&Apache::lonnet::escape($name).'='.
812: &Apache::lonnet::escape($url);
813: }
814: }
815:
816: for (my $i=$lastsel+1;$i<=$#curimport;$i++) {
817: my ($name,$url)=split(/\=/,$curimport[$i]);
818: if ($url) {
819: $importdetail.='&'.$name.'='.$url;
820: }
821: }
822: $importdetail=~s/\&+/\&/g;
823: $importdetail=~s/^\&//;
824:
825: if ($ENV{'form.cut'}) {
826: my @neworder=();
827: for (my $i=0;$i<=$#order;$i++) {
828: my $include=1;
829: foreach (@targetselect) {
830: if ($_-1==$i) { $include=0; }
831: }
832: if ($include) { $neworder[$#neworder+1]=$order[$i]; }
833: }
834: @order=@neworder;
835: &storemap(&Apache::lonnet::filelocation('',$url));
836: }
837:
838: # ----------------------------------------------------------------------- Paste
839: } elsif ($ENV{'form.paste'}) {
840: my $lastsel;
841: if (defined($targetselect[-1])) {
842: $lastsel=$targetselect[-1];
843: } else {
844: $lastsel=$#order+1;
845: }
846: my @newsequence;
847: my @curimport=split(/\&/,$ENV{'form.curimpdetail'});
848: foreach (@importselect) {
849: $newsequence[$#newsequence+1]=$curimport[$_];
850: }
851: &pastetarget($lastsel,@newsequence);
852: &storemap(&Apache::lonnet::filelocation('',$url));
853: # -------------------------------------------------------------------- Move up
854: } elsif ($ENV{'form.moveup'}) {
855: foreach (sort @targetselect) {
856: if ($_-1>0) {
857: my $movethis=$order[$_-1];
858: $order[$_-1]=$order[$_-2];
859: $order[$_-2]=$movethis;
860: }
861: }
862: &storemap(&Apache::lonnet::filelocation('',$url));
863: # ------------------------------------------------------------------ Move down
864: } elsif ($ENV{'form.movedown'}) {
865: foreach (reverse sort @targetselect) {
866: if ($_-1<$#order) {
867: my $movethis=$order[$_-1];
868: $order[$_-1]=$order[$_];
869: $order[$_]=$movethis;
870: }
871: }
872: &storemap(&Apache::lonnet::filelocation('',$url));
873: # --------------------------------------------------------------------- Rename
874: } elsif ($ENV{'form.renameres'}) {
875: my $residx=$Apache::lonratedt::order[$ENV{'form.renameidx'}-1];
876: my ($name,@resrest)=split(/\:/,$Apache::lonratedt::resources[$residx]);
877: $name=$ENV{'form.renametitle'};
878: $name=~s/\:/\&colon\;/g;
879: $Apache::lonratedt::resources[$residx]=$name.':'.join(':',@resrest);
880: &storemap(&Apache::lonnet::filelocation('',$url));
881: }
882: # ------------------------------------------------------------ Assemble windows
883:
884: my $idx=-1;
885: $importdetail='&'.$importdetail;
886: $importdetail=~s/^\&+/\&/;
887: my $importwindow=
888: '<option value="-1"> ---- '.&mt('Import and Paste Area').' ---- </option>'.
889: join("\n",map {
890: $idx++;
891: if ($_) {
892: my ($name,$url)=split(/\=/,$_);
893: unless ($name) { $name=(split(/\//,$url))[-1]; }
894: unless ($name) { $name='EMPTY'; }
895: '<option value="'.$idx.'">'.&Apache::lonnet::unescape($name).
896: '</option>';
897: }
898: } split(/\&/,$importdetail));
899:
900: $idx=0;
901: $targetdetail='';
902: my $targetwindow=
903: '<option value="0"> ------- '.&mt('Target Edit Map').' ------- </option>'.
904: join("\n",map {
905: my ($name,$url)=split(/\:/,$resources[$_]);
906: unless ($name) { $name=(split(/\//,$url))[-1]; }
907: unless ($name) { $name='EMPTY'; }
908: $targetdetail.='&'.&Apache::lonnet::escape($name).'='.
909: &Apache::lonnet::escape($url);
910: $idx++;
911: $name=~s/\:/\:/g;
912: '<option value="'.$idx.'">'.$name.'</option>';
913: } @order);
914:
915: # ----------------------------------------------------- Start simple RAT screen
916: my $editscript=&editscript('simple');
917: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1).
918: &Apache::loncommon::help_open_topic('Sequence_Simple_Editor_Creation').
919: &Apache::loncommon::help_open_faq(6).
920: &Apache::loncommon::help_open_bug('RAT');
921: my %lt=&Apache::lonlocal::texthash(
922: 'sa' => 'Save',
923: 'nt' => 'New Title',
924: 'se' => 'Search',
925: 'im' => 'Import',
926: 'vi' => 'View',
927: 'lm' => 'Load Map',
928: 'ds' => 'Discard Selected',
929: 'ca' => 'Clear All',
930: 'ta' => 'Temporary Assembly Workspace',
931: 'rv' => 'Revert to Last Saved',
932: 'sa' => 'Save',
933: 'mu' => 'Move Up',
934: 'md' => 'Move Down',
935: 're' => 'Rename',
936: 'as' => 'after selected',
937: 'cs' => 'Cut selected',
938: 'ps' => 'Copy selected',
939: 'pas' => 'Paste after selected',
940: );
941: $r->print(<<ENDSMPHEAD);
942: <html>
943: <head>
944: <script>
945:
946: $editscript
947:
948: function openview(entry) {
949: var url=unescape((entry.split('='))[1]);
950: var parts=new Array;
951: parts=url.split(':');
952: url=parts.join(':');
953: if (url) { open(url,'cat'); }
954: }
955:
956: function viewtarget() {
957: openview((document.forms.simpleedit.targetdetail.value.split('&'))
958: [document.forms.simpleedit.target.selectedIndex]);
959: }
960:
961: function viewimport() {
962: openview((document.forms.simpleedit.curimpdetail.value.split('&'))
963: [document.forms.simpleedit.importsel.selectedIndex]);
964: }
965:
966: function renametarget() {
967: var selidx=document.forms.simpleedit.target.selectedIndex;
968: var entry=(document.forms.simpleedit.targetdetail.value.split('&'))
969: [selidx];
970: var oldname=unescape((entry.split('='))[0]);
971: var nameparts=oldname.split(':');
972: oldname=unescape(nameparts.join(':'));
973: nameparts=oldname.split('"');
974: oldname=unescape(nameparts.join('"'));
975: nameparts=oldname.split(''');
976: oldname=unescape(nameparts.join("'"));
977: newtitle=prompt('$lt{'nt'}',oldname);
978: if (newtitle) {
979: document.forms.simpleedit.renameres.value=1;
980: document.forms.simpleedit.renameidx.value=selidx;
981: document.forms.simpleedit.renametitle.value=newtitle;
982: document.forms.simpleedit.submit();
983: }
984: }
985:
986: </script>
987: </head>
988: $bodytag
989: $buttons
990: <font color=red>$errtext</font>
991: <form name=simpleedit method=post>
992: <input type=hidden name=forcesmp value=1>
993: <input type=hidden name=renameres value=0>
994: <input type=hidden name=renametitle value=''>
995: <input type=hidden name=renameidx value=0>
996: <table>
997: <tr><th width="40%">$lt{'ta'}</th>
998: <th> </th>
999: <th width="40%">File: $url</th></tr>
1000: <tr><td bgcolor="#FFFFCC">
1001: <input type=button onClick="javascript:groupsearch()" value="$lt{'se'}">
1002: <input type=button onClick="javascript:groupimport();" value="$lt{'im'}">
1003: $lt{'as'}
1004: <hr>
1005: <input type=text size=20 name=importmap>
1006: <input type=button
1007: onClick="javascript:openbrowser('simpleedit','importmap','sequence,page','')"
1008: value="Select Map"><input type=submit name=loadmap value="$lt{'lm'}"><hr>
1009: <input type=submit name="discard" value="$lt{'ds'}">
1010: <input type=submit name="clear" value="$lt{'ca'}">
1011: <input type=button onClick="javascript:viewimport()" value="$lt{'vi'}">
1012:
1013: </td><td> </td><td bgcolor="#FFFFCC">
1014:
1015: <input type=button onClick=
1016: "javascript:impfortarget.value=1;groupsearch()" value="$lt{'se'}">
1017: <input type=button onClick=
1018: "javascript:impfortarget.value=1;groupimport();" value="$lt{'im'}">
1019: $lt{'as'}
1020: <hr>
1021: <input type=submit name="moveup" value="$lt{'mu'}">
1022: <input type=submit name="movedown" value="$lt{'md'}">
1023: <input type=button onClick="javascript:renametarget()" value="$lt{'re'}">
1024: <hr>$targetmsg
1025: <input type=submit name="revert" value="$lt{'rv'}">
1026: <input type=submit name="save" value="$lt{'sa'}">
1027: <input type=button onClick="javascript:viewtarget()" value="$lt{'vi'}">
1028: </td></tr>
1029:
1030: <tr><td bgcolor="#FFFFCC"><select name="importsel" size=10 multiple>
1031: $importwindow
1032: </select>
1033: </td>
1034: <td bgcolor="#FFFFAA" align="center">
1035: $lt{'cs'}<br>
1036: <input type=submit name=cut value='<<<'><p>
1037: <hr>
1038: $lt{'ps'}<br>
1039: <input type=submit name=copy value='<--'><p>
1040: <hr>
1041: $lt{'pas'}<br>
1042: <input type=submit name=paste value='-->'>
1043: </td>
1044: <td bgcolor="#FFFFCC"><select name="target" size=10 multiple>
1045: $targetwindow
1046: </select>
1047: </table>
1048: <input type=hidden name=importdetail value="">
1049: <input type=hidden name=curimpdetail value="$importdetail">
1050: <input type=hidden name=targetdetail value="$targetdetail">
1051: <input type=hidden name=impfortarget value="0">
1052: </form>
1053: </body></html>
1054: ENDSMPHEAD
1055: }
1056:
1057: # ----------------------------------------------------------------- No such dir
1058: sub nodir {
1059: my ($r,$dir)=@_;
1060: $dir=~s/^\/home\/\w+\/public\_html//;
1061: $r->print(<<ENDNODIR);
1062: <html>
1063: <body bgcolor='#FFFFFF'>
1064: <h1>No such directory: $dir</h1>
1065: </body>
1066: </html>
1067: ENDNODIR
1068: }
1069:
1070: # ---------------------------------------------------------------- View Handler
1071:
1072: sub viewmap {
1073: my ($r,$url,$adv,$errtext)=@_;
1074: $r->print('<html>'.
1075: &Apache::loncommon::bodytag('Edit Content of a Map').
1076: &Apache::loncommon::help_open_faq(6).
1077: &Apache::loncommon::help_open_bug('RAT').
1078: &buttons($adv));
1079: if ($errtext) {
1080: $r->print($errtext.'<hr />');
1081: }
1082: my $idx=0;
1083: $r->print('<h1>'.$url.'</h1>');
1084: if ($adv) {
1085: $r->print('<p><b><font color="red">'.&mt('Map contents are not shown in order.').'</font></b></p><br />');
1086: }
1087: foreach (&attemptread(&Apache::lonnet::filelocation('',$url))) {
1088: if (defined($_)) {
1089: $idx++;
1090: my ($title,$url)=split(/\:/,$_);
1091: $title=~s/\&colon\;/\:/g;
1092: $url=~s/\&colon\;/\:/g;
1093: unless ($title) { $title=(split(/\//,$url))[-1] };
1094: unless ($title) { $title='<i>Empty</i>'; }
1095: if ($url) {
1096: $r->print('<a href="'.&Apache::lonratsrv::qtescape($url).'">');
1097: }
1098: $r->print(&Apache::lonratsrv::qtescape($title));
1099: if ($url) { $r->print('</a>'); }
1100: $r->print('<br>');
1101: }
1102: }
1103: $r->print('</body></html>');
1104: }
1105:
1106: # ================================================================ Main Handler
1107:
1108: sub handler {
1109: my $r=shift;
1110: &Apache::loncommon::content_type($r,'text/html');
1111: $r->send_http_header;
1112:
1113: return OK if $r->header_only;
1114: my $target = $ENV{'form.grade_target'};
1115: if ($target eq 'meta') {
1116: &Apache::loncommon::content_type($r,'text/html');
1117: $r->send_http_header;
1118: return OK;
1119: }
1120:
1121: my $url=$r->uri;
1122: my $fn=&Apache::lonnet::filelocation('',$url);
1123:
1124: my ($dir)=($fn=~/^(.+)\/[^\/]+$/);
1125: unless (-e $dir) {
1126: &nodir($r,$dir);
1127: return OK;
1128: }
1129:
1130: # ------------------------------------------- Determine which tools can be used
1131: my $adv=0;
1132:
1133: unless ($ENV{'form.forcesmp'}) {
1134: if ($ENV{'form.forceadv'}) {
1135: $adv=1;
1136: } elsif (my $fh=Apache::File->new($fn)) {
1137: my $allmap=join('',<$fh>);
1138: $adv=($allmap=~/\<map[^\>]+mode\s*\=\s*(\'|\")rat/is);
1139: }
1140: }
1141:
1142: my $errtext='';
1143: my $fatal=0;
1144:
1145: # -------------------------------------------------------------------- Load map
1146: ($errtext,$fatal)=&mapread($fn,$errtext);
1147:
1148: if ($fatal==1) { $adv=1; }
1149:
1150: # ----------------------------------- adv==1 now means "graphical MUST be used"
1151:
1152: if ($ENV{'form.forceadv'}) {
1153: &ratedt($r,$url);
1154: } elsif ($ENV{'form.forcesmp'}) {
1155: &smpedt($r,$url,$errtext);
1156: } else {
1157: &viewmap($r,$url,$adv,$errtext);
1158: }
1159: return OK;
1160: }
1161:
1162: 1;
1163: __END__
1164:
1165:
1166:
1167:
1168:
1169:
1170:
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