loncom/homework/edit.pm - view

File: [LON-CAPA] / loncom / homework / edit.pm
Revision 1.111: download - view: text, annotated - select for diffs
Mon Sep 10 23:00:05 2007 UTC (16 years, 7 months ago) by albertel
Branches: MAIN
CVS tags: HEAD

- fixes to tag attribute editing wasn't properly handling deletions and
  insertions of new tag attributes, new values now go to the end, and
  seetings to '' are removed from the tag

1: # The LearningOnline Network with CAPA 2: # edit mode helpers 3: # 4: # $Id: edit.pm,v 1.111 2007/09/10 23:00:05 albertel Exp $ 5: # 6: # Copyright Michigan State University Board of Trustees 7: # 8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA). 9: # 10: # LON-CAPA is free software; you can redistribute it and/or modify 11: # it under the terms of the GNU General Public License as published by 12: # the Free Software Foundation; either version 2 of the License, or 13: # (at your option) any later version. 14: # 15: # LON-CAPA is distributed in the hope that it will be useful, 16: # but WITHOUT ANY WARRANTY; without even the implied warranty of 17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18: # GNU General Public License for more details. 19: # 20: # You should have received a copy of the GNU General Public License 21: # along with LON-CAPA; if not, write to the Free Software 22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23: # 24: # /home/httpd/html/adm/gpl.txt 25: # 26: # http://www.lon-capa.org/ 27: # 28: 29: package Apache::edit; 30: 31: use strict; 32: use Apache::lonnet; 33: use HTML::Entities(); 34: use Apache::lonlocal; 35: use lib '/home/httpd/lib/perl/'; 36: use LONCAPA; 37: 38: 39: # Global Vars 40: # default list of colors to use in editing 41: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f'); 42: # depth of nesting of edit 43: $Apache::edit::colordepth=0; 44: @Apache::edit::inserttag=(); 45: # image-type responses: active background image and curdepth at definition 46: $Apache::edit::bgimgsrc=''; 47: $Apache::edit::bgimgsrccurdepth=''; 48: 49: sub initialize_edit { 50: $Apache::edit::colordepth=0; 51: @Apache::edit::inserttag=(); 52: } 53: 54: sub tag_start { 55: my ($target,$token,$description) = @_; 56: my $result=''; 57: if ($target eq "edit") { 58: my $tag=$token->[1]; 59: if (!$description) { 60: $description=&Apache::lonxml::description($token); 61: if (!$description) { $description="<$tag>"; } 62: } 63: $result.= &start_table($token)."<tr><td>$description</td> 64: <td>Delete". 65: &deletelist($target,$token) 66: ."</td> 67: <td>". 68: &insertlist($target,$token); 69: #<td>". 70: # &movebuttons($target,$token). 71: # "</tr><tr><td colspan=\"3\">\n"; 72: my @help = Apache::lonxml::helpinfo($token); 73: if ($help[0]) { 74: $result .= '</td><td align="right" valign="top">' . 75: Apache::loncommon::help_open_topic(@help); 76: } else { $result .= "</td><td> "; } 77: $result .= &end_row().&start_spanning_row(); 78: } 79: return $result; 80: } 81: 82: sub tag_end { 83: my ($target,$token,$description) = @_; 84: my $result=''; 85: if ($target eq 'edit') { 86: $result.="</td></tr>".&end_table()."\n"; 87: } 88: return $result; 89: } 90: 91: sub start_table { 92: my ($token)=@_; 93: my $tag = &Apache::lonxml::get_tag($token); 94: 95: my $color = $Apache::lonxml::insertlist{"$tag.color"}; 96: &Apache::lonxml::debug(" $tag -- $color"); 97: if (!defined($color)) { 98: $color = $Apache::edit::colorlist[$Apache::edit::colordepth]; 99: } 100: $Apache::edit::colordepth++; 101: push(@Apache::edit::inserttag,$token->[1]); 102: my $result='<div align="right">'; 103: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">'; 104: return $result; 105: } 106: 107: sub end_table { 108: $Apache::edit::colordepth--; 109: my $result='</table></div>'; 110: $result.='<div align="left"><table><tr><td>'; 111: 112: my ($tagname,$closingtag); 113: if (defined($Apache::edit::inserttag[-2])) { 114: $tagname=$Apache::edit::inserttag[-2]; 115: } else { 116: if ($Apache::lonhomework::parsing_a_task) { 117: $tagname='Task'; 118: } else { 119: $tagname='problem'; 120: } 121: } 122: if (defined($Apache::edit::inserttag[-1])) { 123: $closingtag=$Apache::edit::inserttag[-1]; 124: } 125: $result.=&innerinsertlist('edit',$tagname,$closingtag). 126: "</td></tr></table></div>"; 127: my $last = pop(@Apache::edit::inserttag); 128: return $result; 129: } 130: 131: sub start_spanning_row { return '<tr><td colspan="4" bgcolor="#DDDDDD">';} 132: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; } 133: sub end_row { return '</td></tr>'; } 134: 135: sub movebuttons { 136: my ($target,$token) = @_; 137: my $result='<input type="submit" name="moveup.'. 138: $Apache::lonxml::curdepth.'" value="Move Up" />'; 139: $result.='<input type="submit" name="movedown.'. 140: $Apache::lonxml::curdepth.'" value="Move Down" />'; 141: return $result; 142: } 143: 144: sub deletelist { 145: my ($target,$token) = @_; 146: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\"> 147: <option></option> 148: <option>Yes</option> 149: </select>"; 150: return $result; 151: } 152: 153: sub handle_delete { 154: if (!$env{"form.delete_$Apache::lonxml::curdepth"}) { return ''; } 155: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 156: my $result=0; 157: if ($space) { 158: my $sub1="$space\:\:delete_$token->[1]"; 159: { 160: no strict 'refs'; 161: if (defined &$sub1) { 162: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style); 163: } 164: } 165: } 166: if (!$result) { 167: my $endtag='/'.$token->[1]; 168: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser,$style); 169: $$parser['-1']->get_token(); 170: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]"); 171: &Apache::lonxml::end_tag($tagstack,$parstack,$token); 172: } 173: return 1; 174: } 175: 176: sub get_insert_list { 177: my ($tagname) = @_; 178: my $result=''; 179: my @tags= (); 180: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist)))); 181: if ($Apache::lonxml::insertlist{"$tagname.which"}) { 182: push (@tags, @{ $Apache::lonxml::insertlist{"$tagname.which"} }); 183: } 184: foreach my $namespace (@Apache::lonxml::namespace) { 185: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) { 186: push (@tags, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} }); 187: } 188: } 189: if (@tags) { 190: my %options; 191: foreach my $tag (@tags) { 192: my $descrip=$Apache::lonxml::insertlist{"$tag.description"}; 193: my $tagnum =$Apache::lonxml::insertlist{"$tag.num"}; 194: $options{$descrip} ="<option value=\"$tagnum\">". 195: $descrip."</option>\n"; 196: } 197: foreach my $option (sort(keys(%options))) {$result.=$options{$option};} 198: if ($result) { $result='<option selected="selected"></option>'.$result; } 199: } 200: return $result; 201: } 202: 203: sub insertlist { 204: my ($target,$token) = @_; 205: return &innerinsertlist($target,$token->[1]); 206: } 207: 208: sub innerinsertlist { 209: my ($target,$tagname,$closingtag) = @_; 210: my $result; 211: my $after=''; 212: if ($closingtag) { 213: $after='_after_'.$closingtag; 214: } 215: if ($target eq 'edit') { 216: my $optionlist= &get_insert_list($tagname); 217: if ($optionlist) { 218: $result = "Insert: 219: <select name=\"insert$after\_$Apache::lonxml::curdepth\"> 220: $optionlist 221: </select>" 222: } else { 223: $result=" "; 224: } 225: } 226: return $result; 227: } 228: 229: sub handle_insert { 230: if ($env{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; } 231: my $tagnum = $env{"form.insert_$Apache::lonxml::curdepth"}; 232: return &do_insert($tagnum); 233: } 234: 235: sub handle_insertafter { 236: my $tagname=shift; 237: if ($env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '') { 238: return ''; 239: } 240: my $tagnum =$env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"}; 241: return &do_insert($tagnum,1); 242: } 243: 244: sub do_insert { 245: my ($tagnum,$after) = @_; 246: my $result; 247: 248: my $newtag = $Apache::lonxml::insertlist{"$tagnum.tag"}; 249: my $func = $Apache::lonxml::insertlist{"$newtag.function"}; 250: if ($func eq 'default') { 251: my $namespace; 252: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); } 253: my $depth = scalar(@Apache::lonxml::depthcounter); 254: $depth -- if ($after); 255: my $inset = "\t"x$depth; 256: $result.="\n$inset<$newtag>\n$inset</$newtag>"; 257: } else { 258: if (defined(&$func)) { 259: { 260: no strict 'refs'; 261: $result.=&$func(); 262: } 263: } else { 264: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined. ($tagnum)"); 265: } 266: } 267: return $result; 268: } 269: 270: sub insert_img { 271: return ' 272: <img />'; 273: } 274: 275: sub insert_responseparam { 276: return ' 277: <responseparam />'; 278: } 279: 280: sub insert_parameter { 281: return ' 282: <parameter />'; 283: } 284: 285: sub insert_formularesponse { 286: return ' 287: <formularesponse answer="" samples=""> 288: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" /> 289: <textline size="25"/> 290: <hintgroup> 291: <startouttext /><endouttext /> 292: </hintgroup> 293: </formularesponse>'; 294: } 295: 296: sub insert_numericalresponse { 297: return ' 298: <numericalresponse answer=""> 299: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" /> 300: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" /> 301: <textline /> 302: <hintgroup> 303: <startouttext /><endouttext /> 304: </hintgroup> 305: </numericalresponse>'; 306: } 307: 308: sub insert_customresponse { 309: return ' 310: <customresponse> 311: <answer type="loncapa/perl"> 312: </answer> 313: <textline /> 314: <hintgroup> 315: <startouttext /><endouttext /> 316: </hintgroup> 317: </customresponse>'; 318: } 319: 320: sub insert_customresponse_answer { 321: return ' 322: <answer type="loncapa/perl"> 323: </answer> 324: '; 325: } 326: 327: sub insert_customhint { 328: return ' 329: <customhint> 330: <answer type="loncapa/perl"> 331: </answer> 332: </customhint>'; 333: } 334: 335: sub insert_customhint_answer { 336: return ' 337: <answer type="loncapa/perl"> 338: </answer> 339: '; 340: } 341: 342: sub insert_mathresponse { 343: return ' 344: <mathresponse> 345: <answer> 346: </answer> 347: <textline /> 348: <hintgroup> 349: <startouttext /> 350: <endouttext /> 351: </hintgroup> 352: </mathresponse>'; 353: } 354: 355: sub insert_mathresponse_answer { 356: return ' 357: <answer> 358: </answer> 359: '; 360: } 361: 362: sub insert_mathhint { 363: return ' 364: <mathhint> 365: <answer> 366: </answer> 367: </mathhint>'; 368: } 369: 370: sub insert_mathhint_answer { 371: return ' 372: <answer> 373: </answer> 374: '; 375: } 376: 377: sub insert_stringresponse { 378: return ' 379: <stringresponse answer="" type=""> 380: <textline /> 381: <hintgroup> 382: <startouttext /><endouttext /> 383: </hintgroup> 384: </stringresponse>'; 385: } 386: 387: sub insert_essayresponse { 388: return ' 389: <essayresponse> 390: <textfield></textfield> 391: </essayresponse>'; 392: } 393: 394: sub insert_imageresponse { 395: return ' 396: <imageresponse max="1"> 397: <foilgroup> 398: <foil> 399: </foil> 400: </foilgroup> 401: <hintgroup> 402: <startouttext /><endouttext /> 403: </hintgroup> 404: </imageresponse>'; 405: } 406: 407: sub insert_optionresponse { 408: return ' 409: <optionresponse max="10"> 410: <foilgroup options=""> 411: <foil> 412: <startouttext /><endouttext /> 413: </foil> 414: </foilgroup> 415: <hintgroup> 416: <startouttext /><endouttext /> 417: </hintgroup> 418: </optionresponse>'; 419: } 420: 421: sub insert_organicresponse { 422: return ' 423: <organicresponse> 424: <textline /> 425: <hintgroup> 426: <startouttext /><endouttext /> 427: </hintgroup> 428: </organicresponse>'; 429: } 430: 431: sub insert_organicstructure { 432: return ' 433: <organicstructure /> 434: '; 435: } 436: 437: sub insert_radiobuttonresponse { 438: return ' 439: <radiobuttonresponse max="10"> 440: <foilgroup> 441: <foil> 442: <startouttext /><endouttext /> 443: </foil> 444: </foilgroup> 445: <hintgroup> 446: <startouttext /><endouttext /> 447: </hintgroup> 448: </radiobuttonresponse>'; 449: } 450: 451: sub insert_reactionresponse { 452: return ' 453: <reactionresponse> 454: <textline /> 455: <hintgroup> 456: <startouttext /><endouttext /> 457: </hintgroup> 458: </reactionresponse>'; 459: } 460: 461: sub insert_rankresponse { 462: return ' 463: <rankresponse max="10"> 464: <foilgroup options=""> 465: <foil> 466: <startouttext /><endouttext /> 467: </foil> 468: </foilgroup> 469: <hintgroup> 470: <startouttext /><endouttext /> 471: </hintgroup> 472: </rankresponse>'; 473: } 474: 475: sub insert_matchresponse { 476: return ' 477: <matchresponse max="10"> 478: <foilgroup options=""> 479: <itemgroup> 480: </itemgroup> 481: <foil> 482: <startouttext /><endouttext /> 483: </foil> 484: </foilgroup> 485: <hintgroup> 486: <startouttext /><endouttext /> 487: </hintgroup> 488: </matchresponse>'; 489: } 490: 491: sub insert_displayduedate { return '<displayduedate />'; } 492: sub insert_displaytitle { return '<displaytitle />'; } 493: sub insert_hintpart { 494: return ' 495: <hintpart on="default"> 496: <startouttext/><endouttext /> 497: </hintpart>'; 498: } 499: 500: sub insert_hintgroup { 501: return ' 502: <hintgroup> 503: <startouttext /><endouttext /> 504: </hintgroup>'; 505: } 506: 507: sub insert_numericalhint { 508: return ' 509: <numericalhint> 510: </numericalhint>'; 511: } 512: 513: sub insert_stringhint { 514: return ' 515: <stringhint> 516: </stringhint>'; 517: } 518: 519: sub insert_formulahint { 520: return ' 521: <formulahint> 522: </formulahint>'; 523: } 524: 525: sub insert_radiobuttonhint { 526: return ' 527: <radiobuttonhint> 528: </radiobuttonhint>'; 529: } 530: 531: sub insert_optionhint { 532: return ' 533: <optionhint> 534: </optionhint>'; 535: } 536: 537: sub insert_startouttext { 538: return "<startouttext /><endouttext />"; 539: } 540: 541: sub insert_script { 542: return "\n<script type=\"loncapa/perl\"></script>"; 543: } 544: 545: sub js_change_detection { 546: my $unsaved=&mt("There are unsaved changes"); 547: return (<<SCRIPT); 548: <script type="text/javascript"> 549: var clean = true; 550: var is_submit = false; 551: var still_ask = false; 552: function compareForm(event_) { 553: if (!event_ && window.event) { 554: event_ = window.event; 555: } 556: if ((!is_submit || (is_submit && still_ask)) && !clean) { 557: still_ask = false; 558: is_submit = false; 559: event_.returnValue = "$unsaved"; 560: return "$unsaved"; 561: } 562: } 563: function unClean() { 564: clean=false; 565: } 566: window.onbeforeunload = compareForm; 567: </script> 568: SCRIPT 569: } 570: 571: sub form_change_detection { 572: return ' onsubmit="is_submit=true;" '; 573: } 574: 575: sub element_change_detection { 576: return ' onchange="unClean();" '; 577: } 578: 579: sub submit_ask_anyway { 580: return ' onclick="still_ask=true;" '; 581: } 582: 583: sub textarea_sizes { 584: my ($data)=@_; 585: my $count=0; 586: my $maxlength=-1; 587: foreach (split ("\n", $$data)) { 588: $count+=int(length($_)/79); 589: $count++; 590: if (length($_) > $maxlength) { $maxlength = length($_); } 591: } 592: my $rows = $count; 593: my $cols = $maxlength; 594: return ($rows,$cols); 595: } 596: 597: sub editline { 598: my ($tag,$data,$description,$size)=@_; 599: $data=&HTML::Entities::encode($data,'<>&"'); 600: if ($description) { $description="<br />".$description."<br />"; } 601: my $change_code = &element_change_detection(); 602: my $result = <<"END"; 603: $description 604: <input type="text" name="homework_edit_$Apache::lonxml::curdepth" 605: value="$data" size="$size" $change_code /> 606: END 607: return $result; 608: } 609: 610: sub editfield { 611: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_; 612: 613: my ($rows,$cols)=&textarea_sizes(\$data); 614: if (&Apache::lonhtmlcommon::htmlareabrowser() && 615: !&Apache::lonhtmlcommon::htmlareablocked()) { 616: $rows+=7; # make room for HTMLarea 617: $minheight+=7; # make room for HTMLarea 618: } 619: if ($cols > 80) { $cols = 80; } 620: if ($cols < $minwidth ) { $cols = $minwidth; } 621: if ($rows < $minheight) { $rows = $minheight; } 622: if ($description) { $description="<br />".$description."<br />"; } 623: if ($usehtmlarea) { 624: &Apache::lonhtmlcommon::add_htmlareafields('homework_edit_'. 625: $Apache::lonxml::curdepth); 626: } 627: # remove typesetting whitespace from between data and the end tag 628: # to make the edit look prettier 629: $data =~ s/\n?[ \t]*$//; 630: 631: return $description."\n".'<textarea style="width:100%" rows="'.$rows. 632: '" cols="'.$cols.'" name="homework_edit_'. 633: $Apache::lonxml::curdepth.'" id="homework_edit_'. 634: $Apache::lonxml::curdepth.'" '.&element_change_detection().'>'. 635: &HTML::Entities::encode($data,'<>&"').'</textarea>'. 636: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework', 637: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n"; 638: } 639: 640: sub modifiedfield { 641: my ($endtag,$parser) = @_; 642: my $result; 643: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"}; 644: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser); 645: # textareas throw away intial \n 646: if ($bodytext=~/^\n/) { 647: $result="\n".$result; 648: } 649: # if there is typesetting whitespace from between the data and the end tag 650: # restore to keep the source looking pretty 651: if ($bodytext =~ /(\n?[ \t]*)$/) { 652: $result .= $1; 653: } 654: return $result; 655: } 656: 657: # Returns a 1 if the token has been modified and you should rebuild the tag 658: # side-effects, will modify the $token if new values are found 659: sub get_new_args { 660: my ($token,$parstack,$safeeval,@args)=@_; 661: my $rebuild=0; 662: foreach my $arg (@args) { 663: #just want the string that it was set to 664: my $value=$token->[2]->{$arg}; 665: my $element=&html_element_name($arg); 666: my $newvalue=$env{"form.$element"}; 667: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:"); 668: if (defined($newvalue) && $value ne $newvalue) { 669: if (ref($newvalue) eq 'ARRAY') { 670: $token->[2]->{$arg}=join(',',@$newvalue); 671: } else { 672: $token->[2]->{$arg}=$newvalue; 673: } 674: $rebuild=1; 675: # add new attributes to the of the attribute seq 676: if (!grep { $arg eq $_ } (@{ $token->[3] })) { 677: push(@{ $token->[3] },$arg); 678: } 679: } elsif (!defined($newvalue) && defined($value)) { 680: delete($token->[2]->{$arg}); 681: $rebuild=1; 682: } 683: } 684: return $rebuild; 685: } 686: 687: # looks for /> on start tags 688: sub rebuild_tag { 689: my ($token) = @_; 690: my $result; 691: if ($token->[0] eq 'S') { 692: $result = '<'.$token->[1]; 693: foreach my $attribute (@{ $token->[3] }) { 694: my $value = $token->[2]{$attribute}; 695: next if ($value eq ''); 696: $value =~s/^\s+|\s+$//g; 697: $value =~s/\"//g; 698: &Apache::lonxml::debug("setting :$attribute: to :$value:"); 699: $result.=' '.$attribute.'="'.$value.'"'; 700: } 701: if ($token->[4] =~ m:/>$:) { 702: $result.=' />'; 703: } else { 704: $result.='>'; 705: } 706: } elsif ( $token->[0] eq 'E' ) { 707: $result = '</'.$token->[1].'>'; 708: } 709: return $result; 710: } 711: 712: sub html_element_name { 713: my ($name) = @_; 714: return $name.'_'.$Apache::lonxml::curdepth; 715: } 716: 717: sub hidden_arg { 718: my ($name,$token) = @_; 719: my $result; 720: my $arg=$token->[2]{$name}; 721: $result='<input name="'.&html_element_name($name). 722: '" type="hidden" value="'.$arg.'" />'; 723: return $result; 724: } 725: 726: sub checked_arg { 727: my ($description,$name,$list,$token) = @_; 728: my $result; 729: my $optionlist=""; 730: my $allselected=$token->[2]{$name}; 731: $result=&mt($description); 732: foreach my $option (@$list) { 733: my ($value,$text); 734: if ( ref($option) eq 'ARRAY') { 735: $value='value="'.$$option[0].'"'; 736: $text=$$option[1]; 737: $option=$$option[0]; 738: } else { 739: $text=$option; 740: $value='value="'.$option.'"'; 741: } 742: $result.="<nobr><label><input type='checkbox' $value name='". 743: &html_element_name($name)."'"; 744: foreach my $selected (split(/,/,$allselected)) { 745: if ( $selected eq $option ) { 746: $result.=" checked='checked' "; 747: last; 748: } 749: } 750: $result.=&element_change_detection()." />$text</label></nobr>\n"; 751: } 752: return $result; 753: } 754: 755: sub text_arg { 756: my ($description,$name,$token,$size) = @_; 757: my $result; 758: if (!defined $size) { $size=20; } 759: my $arg=$token->[2]{$name}; 760: $result=&mt($description).' <input name="'.&html_element_name($name). 761: '" type="text" value="'.$arg.'" size="'.$size.'" '. 762: &element_change_detection().'/>'; 763: return '<nobr>'.$result.'</nobr>'; 764: } 765: 766: sub select_arg { 767: my ($description,$name,$list,$token) = @_; 768: my $result; 769: my $optionlist=""; 770: my $selected=$token->[2]{$name}; 771: foreach my $option (@$list) { 772: my ($text,$value); 773: if ( ref($option) eq 'ARRAY') { 774: $value='value="'.&HTML::Entities::encode($$option[0]).'"'; 775: $text=$$option[1]; 776: $option=$$option[0]; 777: } else { 778: $text=$option; 779: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"'; 780: } 781: if ( $selected eq $option ) { 782: $optionlist.="<option $value selected=\"selected\">$text</option>\n"; 783: } else { 784: $optionlist.="<option $value >$text</option>\n"; 785: } 786: } 787: $result.='<nobr>'.$description.' <select name="'. 788: &html_element_name($name).'" '.&element_change_detection().' > 789: '.$optionlist.' 790: </select></nobr>'; 791: return $result; 792: } 793: 794: sub select_or_text_arg { 795: my ($description,$name,$list,$token,$size) = @_; 796: my $result; 797: my $optionlist=""; 798: my $found=0; 799: my $selected=$token->[2]{$name}; 800: foreach my $option (@$list) { 801: my ($text,$value); 802: if ( ref($option) eq 'ARRAY') { 803: $value='value="'.&HTML::Entities::encode($$option[0]).'"'; 804: $text=$$option[1]; 805: $option=$$option[0]; 806: } else { 807: $text=$option; 808: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"'; 809: } 810: if ( $selected eq $option ) { 811: $optionlist.="<option $value selected=\"selected\">$text</option>\n"; 812: $found=1; 813: } else { 814: $optionlist.="<option $value>$text</option>\n"; 815: } 816: } 817: $optionlist.="<option value=\"TYPEDINVALUE\"". 818: ((!$found)?' selected="selected"':''). 819: ">".&mt('Type-in value')."</option>\n"; 820: # 821: my $change_code=&element_change_detection(); 822: my $element=&html_element_name($name); 823: my $selectelement='select_list_'.$element; 824: my $typeinelement='type_in_'.$element; 825: my $typeinvalue=($found?'':$selected); 826: # 827: my $hiddenvalue='this.form.'.$element.'.value'; 828: my $selectedindex='this.form.'.$selectelement.'.selectedIndex'; 829: my $selectedvalue='this.form.'.$selectelement. 830: '.options['.$selectedindex.'].value'; 831: my $typedinvalue='this.form.'.$typeinelement.'.value'; 832: my $selecttypeinindex='this.form.'.$selectelement.'.options.length'; 833: $description=&mt($description); 834: # 835: return (<<ENDSELECTORTYPE); 836: <nobr> 837: $description 838:  <select name="$selectelement" 839: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" > 840: $optionlist 841: </select> 842: <input type="text" size="$size" name="$typeinelement" 843: value="$typeinvalue" 844: onChange="$hiddenvalue=$typedinvalue;" 845: onFocus="$selectedindex=$selecttypeinindex-1;" /> 846: <input type="hidden" name="$element" value="$selected" $change_code /> 847: </nobr> 848: ENDSELECTORTYPE 849: } 850: 851: #----------------------------------------------------- image coordinates 852: # single image coordinates, x, y 853: sub entercoords { 854: my ($idx,$idy,$mode,$width,$height) = @_; 855: unless ($Apache::edit::bgimgsrc) { return ''; } 856: if ($idx) { $idx.='_'; } 857: if ($idy) { $idy.='_'; } 858: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc)); 859: my $form = 'lonhomework'; 860: my $element; 861: if (! defined($mode) || $mode eq 'attribute') { 862: $element = &escape("$Apache::lonxml::curdepth"); 863: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag> 864: $element = &escape('homework_edit_'. 865: $Apache::lonxml::curdepth); 866: } 867: my $id=$Apache::lonxml::curdepth; 868: my %data=("imagechoice.$id.type" =>'point', 869: "imagechoice.$id.formname" =>$form, 870: "imagechoice.$id.formx" =>"$idx$element", 871: "imagechoice.$id.formy" =>"$idy$element", 872: "imagechoice.$id.file" =>$bgfile, 873: "imagechoice.$id.formcoord" =>$element); 874: if ($height) { 875: $data{"imagechoice.$id.formheight"}=$height.'_'. 876: $Apache::edit::bgimgsrccurdepth; 877: } 878: if ($width) { 879: $data{"imagechoice.$id.formwidth"}=$width.'_'. 880: $Apache::edit::bgimgsrccurdepth; 881: } 882: &Apache::lonnet::appenv(%data); 883: my $text="Click Coordinates"; 884: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>'; 885: return $result; 886: } 887: 888: # coordinates (x1,y1)-(x2,y2)... 889: # mode can be either box, or polygon 890: sub entercoord { 891: my ($idx,$mode,$width,$height,$type) = @_; 892: unless ($Apache::edit::bgimgsrc) { return ''; } 893: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc)); 894: my $form = 'lonhomework'; 895: my $element; 896: if (! defined($mode) || $mode eq 'attribute') { 897: $element = &escape("$idx\_$Apache::lonxml::curdepth"); 898: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag> 899: $element = &escape('homework_edit_'. 900: $Apache::lonxml::curdepth); 901: } 902: my $id=$Apache::lonxml::curdepth; 903: my %data=("imagechoice.$id.type" =>$type, 904: "imagechoice.$id.formname" =>$form, 905: "imagechoice.$id.file" =>$bgfile, 906: "imagechoice.$id.formcoord" =>$element); 907: if ($height) { 908: $data{"imagechoice.$id.formheight"}=$height.'_'. 909: $Apache::edit::bgimgsrccurdepth; 910: } 911: if ($width) { 912: $data{"imagechoice.$id.formwidth"}=$width.'_'. 913: $Apache::edit::bgimgsrccurdepth; 914: } 915: &Apache::lonnet::appenv(%data); 916: my $text="Enter Coordinates"; 917: if ($type eq 'polygon') { $text='Create Polygon Data'; } 918: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>'; 919: return $result; 920: } 921: 922: sub deletecoorddata { 923: &Apache::lonnet::delenv("imagechoice\\."); 924: } 925: 926: #----------------------------------------------------- browse 927: sub browse { 928: # insert a link to call up the filesystem browser (lonindexer) 929: my ($id, $mode, $titleid, $only) = @_; 930: my $form = 'lonhomework'; 931: my $element; 932: if (! defined($mode) || $mode eq 'attribute') { 933: $element = &escape("$id\_$Apache::lonxml::curdepth"); 934: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag> 935: $element = &escape('homework_edit_'. 936: $Apache::lonxml::curdepth); 937: } 938: my $titleelement; 939: if ($titleid) { 940: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'"; 941: } else { 942: $titleelement=",'$only'"; 943: } 944: my $result = <<"ENDBUTTON"; 945: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a> 946: ENDBUTTON 947: return $result; 948: } 949: 950: #----------------------------------------------------- browse 951: sub search { 952: # insert a link to call up the filesystem browser (lonindexer) 953: my ($id, $mode, $titleid) = @_; 954: my $form = 'lonhomework'; 955: my $element; 956: if (! defined($mode) || $mode eq 'attribute') { 957: $element = &escape("$id\_$Apache::lonxml::curdepth"); 958: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag> 959: $element = &escape('homework_edit_'. 960: $Apache::lonxml::curdepth); 961: } 962: my $titleelement; 963: if ($titleid) { 964: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'"; 965: } 966: my $result = <<"ENDBUTTON"; 967: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a> 968: ENDBUTTON 969: return $result; 970: } 971: 972: 973: 1; 974: __END__ 975: 976: =head1 NAME 977: 978: Apache::edit - edit mode helpers 979: 980: =head1 SYNOPSIS 981: 982: Invoked by many homework and xml related modules. 983: 984: &Apache::edit::SUBROUTINENAME(ARGUMENTS); 985: 986: =head1 INTRODUCTION 987: 988: This module outputs HTML syntax helpful for the rendering of edit 989: mode interfaces. 990: 991: This is part of the LearningOnline Network with CAPA project 992: described at http://www.lon-capa.org. 993: 994: =head1 HANDLER SUBROUTINE 995: 996: There is no handler subroutine. 997: 998: =head1 OTHER SUBROUTINES 999: 1000: =over 4 1001: 1002: =item * 1003: 1004: initialize_edit() : initialize edit (set colordepth to zero) 1005: 1006: =item * 1007: 1008: tag_start($target,$token,$description) : provide deletion and insertion lists 1009: for the manipulation of a start tag; return a scalar string 1010: 1011: =item * 1012: 1013: tag_end($target,$token,$description) : ending syntax corresponding to 1014: &tag_start. return a scalar string. 1015: 1016: =item * 1017: 1018: start_table($token) : start table; update colordepth; return scalar string. 1019: 1020: =item * 1021: 1022: end_table() : reduce color depth; end table; return scalar string 1023: 1024: =item * 1025: 1026: start_spanning_row() : start a new table row spanning the 'edit' environment. 1027: 1028: =item * 1029: 1030: start_row() : start a new table row and element. 1031: 1032: =item * 1033: 1034: end_row() : end current table element and row. 1035: 1036: =item * 1037: 1038: movebuttons($target,$token) : move-up and move-down buttons; return scalar 1039: string 1040: 1041: =item * 1042: 1043: deletelist($target,$token) : provide a yes option in an HTML select element; 1044: return scalar string 1045: 1046: =item * 1047: 1048: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval, 1049: $style) : respond to a user delete request by passing relevant stack 1050: and array information to various rendering functions; return a scalar string 1051: 1052: =item * 1053: 1054: get_insert_list($token) : provide an insertion list based on possibilities 1055: from lonxml; return a scalar string 1056: 1057: =item * 1058: 1059: insertlist($target,$token) : api that uses get_insert_list; 1060: return a scalar string 1061: 1062: =item * 1063: 1064: handleinsert($token) : provide an insertion list based on possibilities 1065: from lonxml; return a scalar string 1066: 1067: =item * 1068: 1069: get_insert_list($token) : provide an insertion list based on possibilities 1070: from lonxml; return a scalar string 1071: 1072: =item * 1073: browse($elementname) : provide a link which will open up the filesystem 1074: browser (lonindexer) and, once a file is selected, place the result in 1075: the form element $elementname. 1076: 1077: =item * 1078: search($elementname) : provide a link which will open up the filesystem 1079: searcher (lonsearchcat) and, once a file is selected, place the result in 1080: the form element $elementname. 1081: 1082: =item * 1083: editline(tag,data,description,size): Provide a <input type="text" ../> for 1084: single-line text entry. This is to be used for text enclosed by tags, not 1085: arguements/parameters associated with a tag. 1086: 1087: =back 1088: 1089: incomplete... 1090: 1091: =cut