Annotation of loncom/homework/edit.pm, revision 1.38
1.1 albertel 1: # The LearningOnline Network with CAPA
2: # edit mode helpers
1.25 albertel 3: #
1.38 ! www 4: # $Id: edit.pm,v 1.37 2002/10/25 19:02:38 albertel Exp $
1.25 albertel 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: #
1.1 albertel 28: # 3/20 Guy
1.27 matthew 29: # 01/10/02 Matthew
1.29 matthew 30: # 03/06/02 Matthew
1.1 albertel 31: package Apache::edit;
32:
33: use strict;
1.32 albertel 34: use Apache::lonnet();
35: use HTML::Entities();
1.1 albertel 36:
1.10 albertel 37: # Global Vars
38: # default list of colors to use in editing
39: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
40: # depth of nesting of edit
41: $Apache::edit::colordepth=0;
1.38 ! www 42: @Apache::edit::inserttag=();
1.10 albertel 43:
44: sub initialize_edit {
45: $Apache::edit::colordepth=0;
1.38 ! www 46: @Apache::edit::inserttag=();
1.10 albertel 47: }
48:
1.1 albertel 49: sub tag_start {
1.9 albertel 50: my ($target,$token,$description) = @_;
1.1 albertel 51: my $result='';
1.5 albertel 52: if ($target eq "edit") {
1.4 albertel 53: my $tag=$token->[1];
1.22 albertel 54: if (!$description) {
55: $description=&Apache::lonxml::description($token);
56: if (!$description) { $description="<$tag>"; }
57: }
1.10 albertel 58: $result.= &start_table($token)."<tr><td>$description</td>
1.14 albertel 59: <td>Delete".
1.8 albertel 60: &deletelist($target,$token)
61: ."</td>
1.4 albertel 62: <td>".
1.27 matthew 63: &insertlist($target,$token).&end_row().&start_spanning_row();
64: #<td>".
1.22 albertel 65: # &movebuttons($target,$token).
66: # "</tr><tr><td colspan=\"3\">\n";
1.4 albertel 67: }
1.1 albertel 68: return $result;
69: }
70:
71: sub tag_end {
1.9 albertel 72: my ($target,$token,$description) = @_;
1.1 albertel 73: my $result='';
1.4 albertel 74: if ($target eq 'edit') {
75: my $tag=$token->[1];
1.9 albertel 76: if (!defined($description)) {
1.14 albertel 77: $result.="</td></tr><tr><td></$tag></td><td colspan=\"2\"> </td>";
1.9 albertel 78: } else {
1.14 albertel 79: if ($description ne '') { $result.="</td></tr><tr><td>$description</td><td colspan=\"2\"> </td>"; }
1.9 albertel 80: }
1.12 albertel 81: $result.="</tr>".&end_table()."\n";
1.4 albertel 82: }
83: return $result;
84: }
1.1 albertel 85:
1.10 albertel 86: sub start_table {
87: my ($token)=@_;
88: my $tag = $token->[1];
89: my $tagnum;
90: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1.23 albertel 91: my $testtag=$namespace.'::'.$tag;
1.10 albertel 92: $tagnum=$Apache::lonxml::insertlist{"$testtag.num"};
93: if (defined($tagnum)) { last; }
94: }
95: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
96: my $color = $Apache::lonxml::insertlist{"$tagnum.color"};
97: if (!defined($color)) {
98: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
99: }
100: $Apache::edit::colordepth++;
1.38 ! www 101: push(@Apache::edit::inserttag,$token->[1]);
! 102: my $result="<p align=\"right\"><table bgcolor=\"$color\" width=\"95%\" border=\"2\">";
1.10 albertel 103: return $result;
104: }
105:
106: sub end_table {
107: $Apache::edit::colordepth--;
1.38 ! www 108: my $result="</table></p>";
! 109: $result.=
! 110: "<p><table width=\"100%\"><tr><td>".
! 111: &innerinsertlist('edit',
! 112: (defined($Apache::edit::inserttag[-2])?$Apache::edit::inserttag[-2]:'problem')
! 113: ,
! 114: (defined($Apache::edit::inserttag[-1])?$Apache::edit::inserttag[-1]:'')).
! 115: "</td></tr></table></p>";
! 116: pop(@Apache::edit::inserttag);
1.10 albertel 117: return $result;
118: }
119:
1.27 matthew 120: sub start_spanning_row { return '<tr><td colspan="3">';}
121: sub start_row { return '<tr><td>'; }
122: sub end_row { return '</td></tr>'; }
123:
1.22 albertel 124: sub movebuttons {
125: my ($target,$token) = @_;
126: my $result='<input type="submit" name="moveup.'.
127: $Apache::lonxml::curdepth.'" value="Move Up" />';
128: $result.='<input type="submit" name="movedown.'.
129: $Apache::lonxml::curdepth.'" value="Move Down" />';
130: return $result;
131: }
132:
1.8 albertel 133: sub deletelist {
134: my ($target,$token) = @_;
135: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
1.14 albertel 136: <option></option>
137: <option>Yes</option>
1.8 albertel 138: </select>";
139: return $result;
140: }
141:
1.14 albertel 142: sub handle_delete {
143: if (!$ENV{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
144: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
145: my $result=0;
146: if ($space) {
147: my $sub1="$space\:\:delete_$token->[1]";
148: {
149: no strict 'refs';
150: if (defined &$sub1) {
151: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
152: }
153: }
154: }
155: if (!$result) {
156: my $endtag='/'.$token->[1];
157: my $bodytext=&Apache::lonxml::get_all_text($endtag,$$parser[$#$parser]);
158: $$parser['-1']->get_token();
159: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
160: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
161: }
162: return 1;
163: }
164:
1.7 albertel 165: sub get_insert_list {
1.38 ! www 166: my ($tagname) = @_;
1.6 albertel 167: my $result='';
1.7 albertel 168: my @tagnums= ();
169: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
1.38 ! www 170: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
! 171: push (@tagnums, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
1.7 albertel 172: }
173: foreach my $namespace (@Apache::lonxml::namespace) {
1.38 ! www 174: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
! 175: push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
1.6 albertel 176: }
177: }
1.7 albertel 178: if (@tagnums) {
1.33 albertel 179: my %options;
1.7 albertel 180: foreach my $tagnum (@tagnums) {
1.33 albertel 181: my $descrip=$Apache::lonxml::insertlist{"$tagnum.description"};
182: $options{$descrip} ="<option value=\"$tagnum\">".$descrip."</option>\n";
1.5 albertel 183: }
1.33 albertel 184: foreach my $option (sort(keys(%options))) { $result.=$options{$option}; }
1.5 albertel 185: if ($result) { $result='<option selected="on"></option>'.$result; }
186: }
187: return $result;
188: }
189:
1.4 albertel 190: sub insertlist {
1.8 albertel 191: my ($target,$token) = @_;
1.38 ! www 192: return &innerinsertlist($target,$token->[1]);
! 193: }
! 194:
! 195: sub innerinsertlist {
! 196: my ($target,$tagname,$closingtag) = @_;
1.4 albertel 197: my $result;
1.38 ! www 198: my $after='';
! 199: if ($closingtag) {
! 200: $after='_after_'.$closingtag;
! 201: }
1.4 albertel 202: if ($target eq 'edit') {
1.38 ! www 203: my $optionlist= &get_insert_list($tagname);
1.5 albertel 204: if ($optionlist) {
205: $result = "Insert:
1.38 ! www 206: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
1.5 albertel 207: $optionlist
1.4 albertel 208: </select>"
1.11 albertel 209: } else {
210: $result=" ";
1.6 albertel 211: }
212: }
213: return $result;
214: }
215:
1.7 albertel 216: sub handle_insert {
1.15 albertel 217: if ($ENV{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
1.6 albertel 218: my $result;
219: my $tagnum = $ENV{"form.insert_$Apache::lonxml::curdepth"};
220: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
221: if ($func eq 'default') {
222: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
1.7 albertel 223: my $namespace;
224: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
1.6 albertel 225: $result.="\n<$newtag>\n</$newtag>";
226: } else {
1.15 albertel 227: if (defined(&$func)) {
228: {
229: no strict 'refs';
230: $result.=&$func();
231: }
232: } else {
233: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
234: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined.");
1.38 ! www 235: }
! 236: }
! 237: return $result;
! 238: }
! 239:
! 240: sub handle_insertafter {
! 241: my $tagname=shift;
! 242: if ($ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '')
! 243: { return ''; }
! 244: my $result;
! 245: my $tagnum =$ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
! 246: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
! 247: if ($func eq 'default') {
! 248: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
! 249: my $namespace;
! 250: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
! 251: $result.="\n<$newtag>\n</$newtag>";
! 252: } else {
! 253: if (defined(&$func)) {
! 254: {
! 255: no strict 'refs';
! 256: $result.=&$func();
! 257: }
! 258: } else {
! 259: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
! 260: &Apache::lonxml::error("Unable to insert (after) tag $newtag, $func was not defined. ($tagname $tagnum)");
1.5 albertel 261: }
262: }
263: return $result;
1.16 albertel 264: }
265:
266: sub insert_responseparam {
267: return '
268: <responseparam />';
1.5 albertel 269: }
270:
1.24 albertel 271: sub insert_formularesponse {
272: return '
273: <formularesponse answer="" samples="">
274: <textline />
275: <hintgroup>
276: </hintgroup>
277: </formularesponse>';
278: }
279:
1.15 albertel 280: sub insert_numericalresponse {
281: return '
282: <numericalresponse answer="">
283: <textline />
284: <hintgroup>
285: </hintgroup>
286: </numericalresponse>';
287: }
288:
1.18 albertel 289: sub insert_stringresponse {
290: return '
291: <stringresponse answer="" type="">
292: <textline />
293: <hintgroup>
294: </hintgroup>
295: </stringresponse>';
1.36 albertel 296: }
297:
298: sub insert_essayresponse {
299: return '
300: <essayresponse>
301: <textfield></textfield>
302: </essayresponse>';
1.18 albertel 303: }
304:
1.7 albertel 305: sub insert_optionresponse {
306: return '
307: <optionresponse max="10">
308: <foilgroup options="">
309: </foilgroup>
1.14 albertel 310: <hintgroup>
311: </hintgroup>
1.7 albertel 312: </optionresponse>';
1.1 albertel 313: }
314:
1.23 albertel 315: sub insert_radiobuttonresponse {
316: return '
317: <radiobuttonresponse max="10">
318: <foilgroup>
319: </foilgroup>
320: <hintgroup>
321: </hintgroup>
322: </radiobuttonresponse>';
323: }
324:
1.21 albertel 325: sub insert_displayduedate { return '<displayduedate />'; }
326: sub insert_displaytitle { return '<displaytitle />'; }
1.22 albertel 327: sub insert_hintpart {
328: return '
329: <hintpart on="default">
330: <startouttext/>
331: <endouttext />
332: </hintpart>';
333: }
334:
335: sub insert_numericalhint {
336: return '
337: <numericalhint>
338: </numericalhint>';
1.37 albertel 339: }
340:
341: sub insert_radiobuttonhint {
342: return '
343: <radiobuttonhint>
344: </radiobuttonhint>';
1.22 albertel 345: }
1.21 albertel 346:
1.23 albertel 347: sub insert_startouttext {
348: return "<startouttext />\n<endouttext />";
349: }
350:
351: sub insert_script {
352: return "\n<script type=\"loncapa/perl\">\n</script>";
353: }
354:
1.25 albertel 355: sub textarea_sizes {
356: my ($data)=@_;
357: my $count=0;
358: my $maxlength=-1;
1.26 harris41 359: foreach (split ("\n", $$data)) { $count++;
1.25 albertel 360: if (length($_) > $maxlength) { $maxlength = length($_); }
1.26 harris41 361: }
1.25 albertel 362: my $rows = $count;
363: my $cols = $maxlength;
364: return ($rows,$cols);
365: }
366:
1.32 albertel 367: sub editline {
1.31 matthew 368: my ($tag,$data,$description,$size)=@_;
1.32 albertel 369: $data=&HTML::Entities::encode($data);
1.31 matthew 370: if ($description) { $description="<br />".$description."<br />"; }
371: my $result = <<"END";
372: $description
373: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
374: value="$data" size="$size" />
375: END
376: return $result;
377: }
378:
1.2 albertel 379: sub editfield {
1.5 albertel 380: my ($tag,$data,$description,$minwidth,$minheight)=@_;
1.22 albertel 381:
1.25 albertel 382: my ($rows,$cols)=&textarea_sizes(\$data);
383: if ($cols > 80) { $cols = 80; }
384: if ($cols < $minwidth ) { $cols = $minwidth; }
385: if ($rows < $minheight) { $rows = $minheight; }
386: if ($description) { $description="<br />".$description."<br />"; }
1.32 albertel 387: return $description."\n".' <textarea rows="'.$rows.
388: '" cols="'.$cols.'" name="homework_edit_'.$Apache::lonxml::curdepth.'">'.
389: &HTML::Entities::encode($data).'</textarea>'."\n";
1.2 albertel 390: }
391:
392: sub modifiedfield {
393: my ($token) = @_;
1.3 albertel 394: my $result;
395: # foreach my $envkey (sort keys %ENV) {
396: # &Apache::lonxml::debug("$envkey ---- $ENV{$envkey}");
397: # }
398: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
399: # &Apache::lonxml::debug($ENV{"form.homework_edit_$Apache::lonxml::curdepth"});
400: $result=$ENV{"form.homework_edit_$Apache::lonxml::curdepth"};
401: return $result;
1.2 albertel 402: }
403:
1.15 albertel 404: # Returns a 1 if the token has been modified and you should rebuild the tag
1.12 albertel 405: # side-effects, will modify the $token if new values are found
406: sub get_new_args {
407: my ($token,$parstack,$safeeval,@args)=@_;
408: my $rebuild=0;
409: foreach my $arg (@args) {
1.20 albertel 410: #just want the string that it was set to
411: my $value=$token->[2]->{$arg};
1.12 albertel 412: my $newvalue=$ENV{"form.$Apache::lonxml::curdepth.$arg"};
413: &Apache::lonxml::debug(" for:$arg: cur is :$value: new is :$newvalue:");
414: if ($value ne $newvalue) {
415: $token->[2]->{$arg}=$newvalue;
416: $rebuild=1;
417: }
418: }
419: return $rebuild;
420: }
421:
1.15 albertel 422: # looks for /> on start tags
1.12 albertel 423: sub rebuild_tag {
424: my ($token) = @_;
425: my $result;
426: if ($token->[0] eq 'S') {
427: $result = '<'.$token->[1];
428: while (my ($key,$val)= each(%{$token->[2]})) {
1.20 albertel 429: $val=~s:^\s+|\s+$::g;
1.17 albertel 430: $val=~s:"::g; #"
1.12 albertel 431: &Apache::lonxml::debug("setting :$key: to :$val:");
432: $result.=' '.$key.'="'.$val.'"';
433: }
1.15 albertel 434: if ($token->[4] =~ m:/>$:) {
435: $result.=' />';
436: } else {
437: $result.='>';
438: }
1.12 albertel 439: } elsif ( $token->[0] eq 'E' ) {
440: $result = '</'.$token->[1].'>';
441: }
442: return $result;
443: }
1.13 albertel 444:
445: sub text_arg {
446: my ($description,$name,$token,$size) = @_;
447: my $result;
448: if (!defined $size) { $size=20; }
449: my $arg=$token->[2]{$name};
450: $result=$description.'<input name="'."$Apache::lonxml::curdepth.$name".
451: '" type="text" value="'.$arg.'" size="'.$size.'" />';
452: return $result;
453: }
454:
455: sub select_arg {
456: my ($description,$name,$list,$token) = @_;
457: my $result;
458: my $optionlist="";
459: my $selected=$token->[2]{$name};
460: foreach my $option (@$list) {
461: if ( $selected eq $option ) {
462: $optionlist.="<option selected=\"on\">$option</option>\n";
463: } else {
464: $optionlist.="<option>$option</option>\n";
465: }
466: }
467: $result.=$description.'<select name="'."$Apache::lonxml::curdepth.$name".'">
468: '.$optionlist.'
1.27 matthew 469: </select>';
1.13 albertel 470: return $result;
471: }
472:
1.19 albertel 473: sub select_or_text_arg {
474: my ($description,$name,$list,$token,$size) = @_;
475: my $result;
476: my $optionlist="";
477: my $found=0;
478: my $selected=$token->[2]{$name};
479: foreach my $option (@$list) {
480: if ( $selected eq $option ) {
481: $optionlist.="<option selected=\"on\">$option</option>\n";
482: $found=1;
483: } else {
484: $optionlist.="<option>$option</option>\n";
485: }
486: }
487: $optionlist.="<option value=\"TYPEDINVALUE\">Type in value</option>\n";
1.35 albertel 488: if (($found) || (!$selected)) {
1.19 albertel 489: $result.=$description.'<select name="'."$Apache::lonxml::curdepth.$name".'">
490: '.$optionlist.'
1.27 matthew 491: </select>';
1.19 albertel 492: } else {
493: $result.=&text_arg($description,$name,$token,$size);
494: }
495: return $result;
496: }
1.29 matthew 497:
498: #----------------------------------------------------- browse
499: sub browse {
500: # insert a link to call up the filesystem browser (lonindexer)
1.30 matthew 501: $_ = shift;
1.29 matthew 502: my $form = 'lonhomework';
1.30 matthew 503: my $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth.$_");
1.29 matthew 504: my $result = <<"ENDBUTTON";
505: <a href=\"javascript:openbrowser('$form','$element')\"\>Browse</a>
506: ENDBUTTON
507: return $result;
508: }
509:
1.30 matthew 510: #----------------------------------------------------- browse
511: sub search {
512: # insert a link to call up the filesystem browser (lonindexer)
513: $_ = shift;
514: my $form = 'lonhomework';
515: my $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth.$_");
516: my $result = <<"ENDBUTTON";
517: <a href=\"javascript:opensearcher('$form','$element')\"\>Search</a>
518: ENDBUTTON
519: return $result;
520: }
521:
522:
1.1 albertel 523: 1;
524: __END__
1.26 harris41 525:
526: =head1 NAME
527:
528: Apache::edit - edit mode helpers
529:
530: =head1 SYNOPSIS
531:
532: Invoked by many homework and xml related modules.
533:
534: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
535:
536: =head1 INTRODUCTION
537:
538: This module outputs HTML syntax helpful for the rendering of edit
539: mode interfaces.
540:
541: This is part of the LearningOnline Network with CAPA project
542: described at http://www.lon-capa.org.
543:
544: =head1 HANDLER SUBROUTINE
545:
546: There is no handler subroutine.
547:
548: =head1 OTHER SUBROUTINES
549:
550: =over 4
551:
552: =item *
553:
554: initialize_edit() : initialize edit (set colordepth to zero)
555:
556: =item *
557:
558: tag_start($target,$token,$description) : provide deletion and insertion lists
559: for the manipulation of a start tag; return a scalar string
560:
561: =item *
562:
563: tag_end($target,$token,$description) : ending syntax corresponding to
564: &tag_start. return a scalar string.
565:
566: =item *
567:
568: start_table($token) : start table; update colordepth; return scalar string.
569:
570: =item *
571:
572: end_table() : reduce color depth; end table; return scalar string
1.27 matthew 573:
574: =item *
575:
576: start_spanning_row() : start a new table row spanning the 'edit' environment.
577:
578: =item *
579:
580: start_row() : start a new table row and element.
581:
582: =item *
583:
584: end_row() : end current table element and row.
1.26 harris41 585:
586: =item *
587:
588: movebuttons($target,$token) : move-up and move-down buttons; return scalar
589: string
590:
591: =item *
592:
593: deletelist($target,$token) : provide a yes option in an HTML select element;
594: return scalar string
595:
596: =item *
597:
598: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
599: $style) : respond to a user delete request by passing relevant stack
600: and array information to various rendering functions; return a scalar string
601:
602: =item *
603:
604: get_insert_list($token) : provide an insertion list based on possibilities
605: from lonxml; return a scalar string
606:
607: =item *
608:
609: insertlist($target,$token) : api that uses get_insert_list;
610: return a scalar string
611:
612: =item *
613:
614: handleinsert($token) : provide an insertion list based on possibilities
615: from lonxml; return a scalar string
616:
617: =item *
618:
619: get_insert_list($token) : provide an insertion list based on possibilities
620: from lonxml; return a scalar string
1.29 matthew 621:
622: =item *
623: browse($elementname) : provide a link which will open up the filesystem
624: browser (lonindexer) and, once a file is selected, place the result in
1.30 matthew 625: the form element $elementname.
626:
627: =item *
628: search($elementname) : provide a link which will open up the filesystem
629: searcher (lonsearchcat) and, once a file is selected, place the result in
1.29 matthew 630: the form element $elementname.
1.31 matthew 631:
1.34 harris41 632: =item *
1.32 albertel 633: editline(tag,data,description,size): Provide a <input type="text" ../> for
1.31 matthew 634: single-line text entry. This is to be used for text enclosed by tags, not
635: arguements/parameters associated with a tag.
1.26 harris41 636:
637: =back
638:
639: incomplete...
640:
641: =cut
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