Annotation of loncom/homework/edit.pm, revision 1.53
1.1 albertel 1: # The LearningOnline Network with CAPA
2: # edit mode helpers
1.25 albertel 3: #
1.53 ! albertel 4: # $Id: edit.pm,v 1.52 2003/05/13 20:48:12 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=();
1.49 www 43: # image-type responses: active background image and curdepth at definition
44: $Apache::edit::bgimgsrc='';
45: $Apache::edit::bgimgsrccurdepth='';
1.10 albertel 46:
47: sub initialize_edit {
48: $Apache::edit::colordepth=0;
1.38 www 49: @Apache::edit::inserttag=();
1.10 albertel 50: }
51:
1.1 albertel 52: sub tag_start {
1.9 albertel 53: my ($target,$token,$description) = @_;
1.1 albertel 54: my $result='';
1.5 albertel 55: if ($target eq "edit") {
1.4 albertel 56: my $tag=$token->[1];
1.22 albertel 57: if (!$description) {
58: $description=&Apache::lonxml::description($token);
59: if (!$description) { $description="<$tag>"; }
60: }
1.10 albertel 61: $result.= &start_table($token)."<tr><td>$description</td>
1.14 albertel 62: <td>Delete".
1.8 albertel 63: &deletelist($target,$token)
64: ."</td>
1.4 albertel 65: <td>".
1.27 matthew 66: &insertlist($target,$token).&end_row().&start_spanning_row();
67: #<td>".
1.22 albertel 68: # &movebuttons($target,$token).
69: # "</tr><tr><td colspan=\"3\">\n";
1.4 albertel 70: }
1.1 albertel 71: return $result;
72: }
73:
74: sub tag_end {
1.9 albertel 75: my ($target,$token,$description) = @_;
1.1 albertel 76: my $result='';
1.4 albertel 77: if ($target eq 'edit') {
78: my $tag=$token->[1];
1.9 albertel 79: if (!defined($description)) {
1.14 albertel 80: $result.="</td></tr><tr><td></$tag></td><td colspan=\"2\"> </td>";
1.9 albertel 81: } else {
1.14 albertel 82: if ($description ne '') { $result.="</td></tr><tr><td>$description</td><td colspan=\"2\"> </td>"; }
1.9 albertel 83: }
1.12 albertel 84: $result.="</tr>".&end_table()."\n";
1.4 albertel 85: }
86: return $result;
87: }
1.1 albertel 88:
1.10 albertel 89: sub start_table {
90: my ($token)=@_;
91: my $tag = $token->[1];
92: my $tagnum;
93: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1.23 albertel 94: my $testtag=$namespace.'::'.$tag;
1.10 albertel 95: $tagnum=$Apache::lonxml::insertlist{"$testtag.num"};
96: if (defined($tagnum)) { last; }
97: }
98: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
99: my $color = $Apache::lonxml::insertlist{"$tagnum.color"};
100: if (!defined($color)) {
101: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
102: }
103: $Apache::edit::colordepth++;
1.38 www 104: push(@Apache::edit::inserttag,$token->[1]);
1.40 albertel 105: my $result='<div align="right">';
1.41 www 106: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">';
1.10 albertel 107: return $result;
108: }
109:
110: sub end_table {
111: $Apache::edit::colordepth--;
1.40 albertel 112: my $result='</table></div>';
1.39 albertel 113: $result.="<table><tr><td>";
114:
115: my ($tagname,$closingtag);
116: if (defined($Apache::edit::inserttag[-2])) {
117: $tagname=$Apache::edit::inserttag[-2];
118: } else {$tagname='problem';}
119: if (defined($Apache::edit::inserttag[-1])) {
120: $closingtag=$Apache::edit::inserttag[-1];
121: }
122: $result.=&innerinsertlist('edit',$tagname,$closingtag).
123: "</td></tr></table>";
1.38 www 124: pop(@Apache::edit::inserttag);
1.10 albertel 125: return $result;
126: }
127:
1.41 www 128: sub start_spanning_row { return '<tr><td colspan="3" bgcolor="#DDDDDD">';}
129: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
1.27 matthew 130: sub end_row { return '</td></tr>'; }
131:
1.22 albertel 132: sub movebuttons {
133: my ($target,$token) = @_;
134: my $result='<input type="submit" name="moveup.'.
135: $Apache::lonxml::curdepth.'" value="Move Up" />';
136: $result.='<input type="submit" name="movedown.'.
137: $Apache::lonxml::curdepth.'" value="Move Down" />';
138: return $result;
139: }
140:
1.8 albertel 141: sub deletelist {
142: my ($target,$token) = @_;
143: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
1.14 albertel 144: <option></option>
145: <option>Yes</option>
1.8 albertel 146: </select>";
147: return $result;
148: }
149:
1.14 albertel 150: sub handle_delete {
151: if (!$ENV{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
152: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
153: my $result=0;
154: if ($space) {
155: my $sub1="$space\:\:delete_$token->[1]";
156: {
157: no strict 'refs';
158: if (defined &$sub1) {
159: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
160: }
161: }
162: }
163: if (!$result) {
164: my $endtag='/'.$token->[1];
1.45 albertel 165: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
1.14 albertel 166: $$parser['-1']->get_token();
167: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
168: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
169: }
170: return 1;
171: }
172:
1.7 albertel 173: sub get_insert_list {
1.38 www 174: my ($tagname) = @_;
1.6 albertel 175: my $result='';
1.7 albertel 176: my @tagnums= ();
177: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
1.38 www 178: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
179: push (@tagnums, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
1.7 albertel 180: }
181: foreach my $namespace (@Apache::lonxml::namespace) {
1.38 www 182: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
183: push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
1.6 albertel 184: }
185: }
1.7 albertel 186: if (@tagnums) {
1.33 albertel 187: my %options;
1.7 albertel 188: foreach my $tagnum (@tagnums) {
1.33 albertel 189: my $descrip=$Apache::lonxml::insertlist{"$tagnum.description"};
190: $options{$descrip} ="<option value=\"$tagnum\">".$descrip."</option>\n";
1.5 albertel 191: }
1.33 albertel 192: foreach my $option (sort(keys(%options))) { $result.=$options{$option}; }
1.5 albertel 193: if ($result) { $result='<option selected="on"></option>'.$result; }
194: }
195: return $result;
196: }
197:
1.4 albertel 198: sub insertlist {
1.8 albertel 199: my ($target,$token) = @_;
1.38 www 200: return &innerinsertlist($target,$token->[1]);
201: }
202:
203: sub innerinsertlist {
204: my ($target,$tagname,$closingtag) = @_;
1.4 albertel 205: my $result;
1.38 www 206: my $after='';
207: if ($closingtag) {
208: $after='_after_'.$closingtag;
209: }
1.4 albertel 210: if ($target eq 'edit') {
1.38 www 211: my $optionlist= &get_insert_list($tagname);
1.5 albertel 212: if ($optionlist) {
213: $result = "Insert:
1.38 www 214: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
1.5 albertel 215: $optionlist
1.4 albertel 216: </select>"
1.11 albertel 217: } else {
218: $result=" ";
1.6 albertel 219: }
220: }
221: return $result;
222: }
223:
1.7 albertel 224: sub handle_insert {
1.15 albertel 225: if ($ENV{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
1.6 albertel 226: my $result;
227: my $tagnum = $ENV{"form.insert_$Apache::lonxml::curdepth"};
228: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
229: if ($func eq 'default') {
230: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
1.7 albertel 231: my $namespace;
232: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
1.6 albertel 233: $result.="\n<$newtag>\n</$newtag>";
234: } else {
1.15 albertel 235: if (defined(&$func)) {
236: {
237: no strict 'refs';
238: $result.=&$func();
239: }
240: } else {
241: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
242: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined.");
1.38 www 243: }
244: }
245: return $result;
246: }
247:
248: sub handle_insertafter {
249: my $tagname=shift;
250: if ($ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '')
251: { return ''; }
252: my $result;
253: my $tagnum =$ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
254: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
255: if ($func eq 'default') {
256: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
257: my $namespace;
258: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
259: $result.="\n<$newtag>\n</$newtag>";
260: } else {
261: if (defined(&$func)) {
262: {
263: no strict 'refs';
264: $result.=&$func();
265: }
266: } else {
267: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
268: &Apache::lonxml::error("Unable to insert (after) tag $newtag, $func was not defined. ($tagname $tagnum)");
1.5 albertel 269: }
270: }
271: return $result;
1.16 albertel 272: }
273:
274: sub insert_responseparam {
275: return '
276: <responseparam />';
1.5 albertel 277: }
278:
1.24 albertel 279: sub insert_formularesponse {
280: return '
281: <formularesponse answer="" samples="">
282: <textline />
283: <hintgroup>
284: </hintgroup>
285: </formularesponse>';
286: }
287:
1.15 albertel 288: sub insert_numericalresponse {
289: return '
290: <numericalresponse answer="">
291: <textline />
292: <hintgroup>
293: </hintgroup>
294: </numericalresponse>';
295: }
296:
1.18 albertel 297: sub insert_stringresponse {
298: return '
299: <stringresponse answer="" type="">
300: <textline />
301: <hintgroup>
302: </hintgroup>
303: </stringresponse>';
1.36 albertel 304: }
305:
306: sub insert_essayresponse {
307: return '
308: <essayresponse>
309: <textfield></textfield>
310: </essayresponse>';
1.18 albertel 311: }
312:
1.7 albertel 313: sub insert_optionresponse {
314: return '
315: <optionresponse max="10">
316: <foilgroup options="">
317: </foilgroup>
1.14 albertel 318: <hintgroup>
319: </hintgroup>
1.7 albertel 320: </optionresponse>';
1.1 albertel 321: }
322:
1.23 albertel 323: sub insert_radiobuttonresponse {
324: return '
325: <radiobuttonresponse max="10">
326: <foilgroup>
327: </foilgroup>
328: <hintgroup>
329: </hintgroup>
330: </radiobuttonresponse>';
1.43 albertel 331: }
332:
333: sub insert_rankresponse {
334: return '
335: <rankresponse max="10">
336: <foilgroup options="">
337: </foilgroup>
338: <hintgroup>
339: </hintgroup>
340: </rankresponse>';
1.23 albertel 341: }
342:
1.44 albertel 343: sub insert_matchresponse {
344: return '
345: <matchresponse max="10">
346: <foilgroup options="">
347: <itemgroup>
348: </itemgroup>
349: </foilgroup>
350: <hintgroup>
351: </hintgroup>
352: </matchresponse>';
353: }
354:
1.21 albertel 355: sub insert_displayduedate { return '<displayduedate />'; }
356: sub insert_displaytitle { return '<displaytitle />'; }
1.22 albertel 357: sub insert_hintpart {
358: return '
359: <hintpart on="default">
360: <startouttext/>
361: <endouttext />
362: </hintpart>';
363: }
364:
365: sub insert_numericalhint {
366: return '
367: <numericalhint>
368: </numericalhint>';
1.46 albertel 369: }
370:
371: sub insert_stringhint {
372: return '
373: <stringhint>
374: </stringhint>';
375: }
376:
377: sub insert_formulahint {
378: return '
379: <formulahint>
380: </formulahint>';
1.37 albertel 381: }
382:
383: sub insert_radiobuttonhint {
384: return '
385: <radiobuttonhint>
386: </radiobuttonhint>';
1.50 albertel 387: }
388:
389: sub insert_optionhint {
390: return '
391: <optionhint>
392: </optionhint>';
1.22 albertel 393: }
1.21 albertel 394:
1.23 albertel 395: sub insert_startouttext {
396: return "<startouttext />\n<endouttext />";
397: }
398:
399: sub insert_script {
400: return "\n<script type=\"loncapa/perl\">\n</script>";
401: }
402:
1.25 albertel 403: sub textarea_sizes {
404: my ($data)=@_;
405: my $count=0;
406: my $maxlength=-1;
1.53 ! albertel 407: foreach (split ("\n", $$data)) {
! 408: $count+=int(length($_)/79);
! 409: $count++;
! 410: if (length($_) > $maxlength) { $maxlength = length($_); }
! 411: }
1.25 albertel 412: my $rows = $count;
413: my $cols = $maxlength;
414: return ($rows,$cols);
415: }
416:
1.32 albertel 417: sub editline {
1.31 matthew 418: my ($tag,$data,$description,$size)=@_;
1.32 albertel 419: $data=&HTML::Entities::encode($data);
1.31 matthew 420: if ($description) { $description="<br />".$description."<br />"; }
421: my $result = <<"END";
422: $description
423: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
424: value="$data" size="$size" />
425: END
426: return $result;
427: }
428:
1.2 albertel 429: sub editfield {
1.5 albertel 430: my ($tag,$data,$description,$minwidth,$minheight)=@_;
1.22 albertel 431:
1.25 albertel 432: my ($rows,$cols)=&textarea_sizes(\$data);
433: if ($cols > 80) { $cols = 80; }
434: if ($cols < $minwidth ) { $cols = $minwidth; }
435: if ($rows < $minheight) { $rows = $minheight; }
436: if ($description) { $description="<br />".$description."<br />"; }
1.32 albertel 437: return $description."\n".' <textarea rows="'.$rows.
438: '" cols="'.$cols.'" name="homework_edit_'.$Apache::lonxml::curdepth.'">'.
439: &HTML::Entities::encode($data).'</textarea>'."\n";
1.2 albertel 440: }
441:
442: sub modifiedfield {
443: my ($token) = @_;
1.3 albertel 444: my $result;
445: # foreach my $envkey (sort keys %ENV) {
446: # &Apache::lonxml::debug("$envkey ---- $ENV{$envkey}");
447: # }
448: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
449: # &Apache::lonxml::debug($ENV{"form.homework_edit_$Apache::lonxml::curdepth"});
450: $result=$ENV{"form.homework_edit_$Apache::lonxml::curdepth"};
451: return $result;
1.2 albertel 452: }
453:
1.15 albertel 454: # Returns a 1 if the token has been modified and you should rebuild the tag
1.12 albertel 455: # side-effects, will modify the $token if new values are found
456: sub get_new_args {
457: my ($token,$parstack,$safeeval,@args)=@_;
458: my $rebuild=0;
459: foreach my $arg (@args) {
1.20 albertel 460: #just want the string that it was set to
461: my $value=$token->[2]->{$arg};
1.48 albertel 462: my $element=&html_element_name($arg);
463: my $newvalue=$ENV{"form.$element"};
1.12 albertel 464: &Apache::lonxml::debug(" for:$arg: cur is :$value: new is :$newvalue:");
1.52 albertel 465: if (defined($newvalue) && $value ne $newvalue) {
1.12 albertel 466: $token->[2]->{$arg}=$newvalue;
467: $rebuild=1;
468: }
469: }
470: return $rebuild;
471: }
472:
1.15 albertel 473: # looks for /> on start tags
1.12 albertel 474: sub rebuild_tag {
475: my ($token) = @_;
476: my $result;
477: if ($token->[0] eq 'S') {
478: $result = '<'.$token->[1];
479: while (my ($key,$val)= each(%{$token->[2]})) {
1.20 albertel 480: $val=~s:^\s+|\s+$::g;
1.17 albertel 481: $val=~s:"::g; #"
1.12 albertel 482: &Apache::lonxml::debug("setting :$key: to :$val:");
483: $result.=' '.$key.'="'.$val.'"';
484: }
1.15 albertel 485: if ($token->[4] =~ m:/>$:) {
486: $result.=' />';
487: } else {
488: $result.='>';
489: }
1.12 albertel 490: } elsif ( $token->[0] eq 'E' ) {
491: $result = '</'.$token->[1].'>';
492: }
493: return $result;
494: }
1.13 albertel 495:
1.47 matthew 496: sub html_element_name {
497: my ($name) = @_;
1.48 albertel 498: return $name.'_'.$Apache::lonxml::curdepth;
499: }
500:
501: sub hidden_arg {
502: my ($name,$token) = @_;
503: my $result;
504: my $arg=$token->[2]{$name};
505: $result='<input name="'.&html_element_name($name).
506: '" type="hidden" value="'.$arg.'" />';
507: return $result;
1.47 matthew 508: }
509:
1.13 albertel 510: sub text_arg {
511: my ($description,$name,$token,$size) = @_;
512: my $result;
513: if (!defined $size) { $size=20; }
514: my $arg=$token->[2]{$name};
1.47 matthew 515: $result=$description.' <input name="'.&html_element_name($name).
1.13 albertel 516: '" type="text" value="'.$arg.'" size="'.$size.'" />';
517: return $result;
518: }
519:
520: sub select_arg {
1.39 albertel 521: my ($description,$name,$list,$token) = @_;
522: my $result;
523: my $optionlist="";
524: my $selected=$token->[2]{$name};
525: foreach my $option (@$list) {
526: my $value;
527: if ( ref($option) eq 'ARRAY') {
528: $value='value="'.$$option[0].'"';
529: $option=$$option[1];
530: } else {
531: $value='value="'.$option.'"';
532: }
533: if ( $selected eq $option ) {
534: $optionlist.="<option $value selected=\"on\">$option</option>\n";
535: } else {
536: $optionlist.="<option $value >$option</option>\n";
537: }
1.13 albertel 538: }
1.47 matthew 539: $result.=$description.' <select name="'.&html_element_name($name).
540: '">
1.13 albertel 541: '.$optionlist.'
1.27 matthew 542: </select>';
1.39 albertel 543: return $result;
1.13 albertel 544: }
545:
1.19 albertel 546: sub select_or_text_arg {
1.39 albertel 547: my ($description,$name,$list,$token,$size) = @_;
548: my $result;
549: my $optionlist="";
550: my $found=0;
551: my $selected=$token->[2]{$name};
552: foreach my $option (@$list) {
553: my $value;
554: if ( ref($option) eq 'ARRAY') {
555: $value='value="'.$$option[0].'"';
556: $option=$$option[1];
557: } else {
558: $value='value="'.$option.'"';
559: }
560: if ( $selected eq $option ) {
561: $optionlist.="<option $value selected=\"on\">$option</option>\n";
562: $found=1;
563: } else {
564: $optionlist.="<option $value>$option</option>\n";
565: }
566: }
567: $optionlist.="<option value=\"TYPEDINVALUE\">Type in value</option>\n";
568: if (($found) || (!$selected)) {
1.47 matthew 569: $result.=$description.' <select name="'.&html_element_name($name)
570: .'">
1.39 albertel 571: '.$optionlist.'
572: </select>';
1.19 albertel 573: } else {
1.39 albertel 574: $result.=&text_arg($description,$name,$token,$size);
1.19 albertel 575: }
1.39 albertel 576: return $result;
1.19 albertel 577: }
1.29 matthew 578:
1.49 www 579: #----------------------------------------------------- image coordinates
580: # single image coordinates, x, y
581: sub entercoords {
582: my ($idx,,$idy,$mode,$width,$height) = @_;
583: unless ($Apache::edit::bgimgsrc) { return ''; }
584: if ($idx) { $idx.='_'; }
585: if ($idy) { $idy.='_'; }
586: my $bgfile=&Apache::lonnet::escape($Apache::edit::bgimgsrc);
587: my $form = 'lonhomework';
588: my $element;
589: if (! defined($mode) || $mode eq 'attribute') {
590: $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth");
591: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
592: $element = &Apache::lonnet::escape('homework_edit_'.
593: $Apache::lonxml::curdepth);
594: }
595: my $formheight='';
596: if ($height) {
597: $formheight='&formheight='.$height.'_'.$Apache::edit::bgimgsrccurdepth;
598: }
599: my $formwidth='';
600: if ($width) {
601: $formwidth='&formwidth='.$width.'_'.$Apache::edit::bgimgsrccurdepth;
602: }
603: my $result = <<"ENDBUTTON";
604: <a href="/cgi-bin/imagechoice.pl?formname=$form&file=$bgfile&formx=$idx$element&formy=$idy$element$formheight$formwidth"
605: target="imagechoice">Click Coordinates</a>
606: ENDBUTTON
607: return $result;
608: }
609:
610: # coordinate pair (x1,y1)-(x2,y2)
611: sub entercoordpair {
612: my ($id,$mode,$width,$height) = @_;
613: unless ($Apache::edit::bgimgsrc) { return ''; }
614: my $bgfile=&Apache::lonnet::escape($Apache::edit::bgimgsrc);
615: my $form = 'lonhomework';
616: my $element;
617: if (! defined($mode) || $mode eq 'attribute') {
618: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
619: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
620: $element = &Apache::lonnet::escape('homework_edit_'.
621: $Apache::lonxml::curdepth);
622: }
623: my $formheight='';
624: if ($height) {
625: $formheight='&formheight='.$height.'_'.$Apache::edit::bgimgsrccurdepth;
626: }
627: my $formwidth='';
628: if ($width) {
629: $formwidth='&formwidth='.$width.'_'.$Apache::edit::bgimgsrccurdepth;
630: }
631: my $result = <<"ENDBUTTON";
1.51 www 632: <a href="/cgi-bin/imagechoice.pl?mode=pair&formname=$form&file=$bgfile$formheight$formwidth&formcoord=$element"
1.49 www 633: target="imagechoice">Click Coordinate Pair</a>
634: ENDBUTTON
635: return $result;
636: }
1.29 matthew 637: #----------------------------------------------------- browse
638: sub browse {
639: # insert a link to call up the filesystem browser (lonindexer)
1.42 matthew 640: my ($id, $mode) = @_;
1.29 matthew 641: my $form = 'lonhomework';
1.42 matthew 642: my $element;
643: if (! defined($mode) || $mode eq 'attribute') {
1.49 www 644: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
1.42 matthew 645: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
646: $element = &Apache::lonnet::escape('homework_edit_'.
647: $Apache::lonxml::curdepth);
648: }
1.29 matthew 649: my $result = <<"ENDBUTTON";
650: <a href=\"javascript:openbrowser('$form','$element')\"\>Browse</a>
651: ENDBUTTON
652: return $result;
653: }
654:
1.30 matthew 655: #----------------------------------------------------- browse
656: sub search {
657: # insert a link to call up the filesystem browser (lonindexer)
1.49 www 658: my ($id, $mode) = @_;
1.30 matthew 659: my $form = 'lonhomework';
1.49 www 660: my $element;
661: if (! defined($mode) || $mode eq 'attribute') {
662: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
663: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
664: $element = &Apache::lonnet::escape('homework_edit_'.
665: $Apache::lonxml::curdepth);
666: }
1.30 matthew 667: my $result = <<"ENDBUTTON";
668: <a href=\"javascript:opensearcher('$form','$element')\"\>Search</a>
669: ENDBUTTON
670: return $result;
671: }
672:
673:
1.1 albertel 674: 1;
675: __END__
1.26 harris41 676:
677: =head1 NAME
678:
679: Apache::edit - edit mode helpers
680:
681: =head1 SYNOPSIS
682:
683: Invoked by many homework and xml related modules.
684:
685: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
686:
687: =head1 INTRODUCTION
688:
689: This module outputs HTML syntax helpful for the rendering of edit
690: mode interfaces.
691:
692: This is part of the LearningOnline Network with CAPA project
693: described at http://www.lon-capa.org.
694:
695: =head1 HANDLER SUBROUTINE
696:
697: There is no handler subroutine.
698:
699: =head1 OTHER SUBROUTINES
700:
701: =over 4
702:
703: =item *
704:
705: initialize_edit() : initialize edit (set colordepth to zero)
706:
707: =item *
708:
709: tag_start($target,$token,$description) : provide deletion and insertion lists
710: for the manipulation of a start tag; return a scalar string
711:
712: =item *
713:
714: tag_end($target,$token,$description) : ending syntax corresponding to
715: &tag_start. return a scalar string.
716:
717: =item *
718:
719: start_table($token) : start table; update colordepth; return scalar string.
720:
721: =item *
722:
723: end_table() : reduce color depth; end table; return scalar string
1.27 matthew 724:
725: =item *
726:
727: start_spanning_row() : start a new table row spanning the 'edit' environment.
728:
729: =item *
730:
731: start_row() : start a new table row and element.
732:
733: =item *
734:
735: end_row() : end current table element and row.
1.26 harris41 736:
737: =item *
738:
739: movebuttons($target,$token) : move-up and move-down buttons; return scalar
740: string
741:
742: =item *
743:
744: deletelist($target,$token) : provide a yes option in an HTML select element;
745: return scalar string
746:
747: =item *
748:
749: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
750: $style) : respond to a user delete request by passing relevant stack
751: and array information to various rendering functions; return a scalar string
752:
753: =item *
754:
755: get_insert_list($token) : provide an insertion list based on possibilities
756: from lonxml; return a scalar string
757:
758: =item *
759:
760: insertlist($target,$token) : api that uses get_insert_list;
761: return a scalar string
762:
763: =item *
764:
765: handleinsert($token) : provide an insertion list based on possibilities
766: from lonxml; return a scalar string
767:
768: =item *
769:
770: get_insert_list($token) : provide an insertion list based on possibilities
771: from lonxml; return a scalar string
1.29 matthew 772:
773: =item *
774: browse($elementname) : provide a link which will open up the filesystem
775: browser (lonindexer) and, once a file is selected, place the result in
1.30 matthew 776: the form element $elementname.
777:
778: =item *
779: search($elementname) : provide a link which will open up the filesystem
780: searcher (lonsearchcat) and, once a file is selected, place the result in
1.29 matthew 781: the form element $elementname.
1.31 matthew 782:
1.34 harris41 783: =item *
1.32 albertel 784: editline(tag,data,description,size): Provide a <input type="text" ../> for
1.31 matthew 785: single-line text entry. This is to be used for text enclosed by tags, not
786: arguements/parameters associated with a tag.
1.26 harris41 787:
788: =back
789:
790: incomplete...
791:
792: =cut
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