loncom/homework/edit.pm - view

File: [LON-CAPA] / loncom / homework / edit.pm
Revision 1.152: download - view: text, annotated - select for diffs
Fri Nov 28 18:23:03 2014 UTC (9 years, 5 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_11_1, HEAD

- Optionresponse in "checkbox" mode:
  - Additional (optional) attributes: maxcheck and mincheck available to enforce
    requirement on number of checkboxes which may be checked.
  - Intended use case is polling with optionresponse used in survey mode,
    and maximum number of selections voter may make is to be limited.

1: # The LearningOnline Network with CAPA 2: # edit mode helpers 3: # 4: # $Id: edit.pm,v 1.152 2014/11/28 18:23:03 raeburn 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: =pod 30: 31: =head1 NAME 32: 33: Apache::edit - edit mode helpers 34: 35: =head1 SYNOPSIS 36: 37: Invoked by many homework and xml related modules. 38: 39: &Apache::edit::SUBROUTINENAME(ARGUMENTS); 40: 41: =head1 INTRODUCTION 42: 43: This module outputs HTML syntax helpful for the rendering of edit 44: mode interfaces. 45: 46: This is part of the LearningOnline Network with CAPA project 47: described at http://www.lon-capa.org. 48: 49: =head1 SUBROUTINES 50: 51: =over 4 52: 53: =item initialize_edit() 54: 55: initialize edit (set colordepth to zero) 56: 57: =item tag_start($target,$token,$description) 58: 59: provide deletion and insertion lists 60: for the manipulation of a start tag; return a scalar string 61: 62: =item tag_end($target,$token,$description) 63: 64: ending syntax corresponding to 65: &tag_start. return a scalar string. 66: 67: =item start_table($token) 68: 69: start table; update colordepth; return scalar string. 70: 71: =item end_table() 72: 73: reduce color depth; end table; return scalar string 74: 75: =item start_spanning_row() 76: 77: start a new table row spanning the 'edit' environment. 78: 79: =item start_row() 80: 81: start a new table row and element. 82: 83: =item end_row() 84: 85: end current table element and row. 86: 87: =item movebuttons($target,$token) 88: 89: move-up and move-down buttons; return scalar string 90: 91: =item deletelist($target,$token) 92: 93: provide a yes option in an HTML select element; return scalar string 94: 95: =item handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval, 96: $style) 97: 98: respond to a user delete request by passing relevant stack 99: and array information to various rendering functions; return a scalar string 100: 101: =item get_insert_list($token) 102: 103: provide an insertion list based on possibilities from lonxml; return a scalar string 104: 105: =item insertlist($target,$token) 106: 107: api that uses get_insert_list; return a scalar string 108: 109: =item handleinsert($token) 110: 111: provide an insertion list based on possibilities from lonxml; return a scalar string 112: 113: =item get_insert_list($token) 114: 115: provide an insertion list based on possibilities from lonxml; return a scalar string 116: 117: =item browse($elementname) 118: 119: provide a link which will open up the filesystem browser (lonindexer) and, once a file is selected, place the result in the form element $elementname. 120: 121: =item search($elementname) 122: 123: provide a link which will open up the filesystem searcher (lonsearchcat) and, once a file is selected, place the result in the form element $elementname. 124: 125: =item editline(tag,data,description,size) 126: 127: Provide a <input type="text" ../> for single-line text entry. This is to be used for text enclosed by tags, not arguements/parameters associated with a tag. 128: 129: =back 130: 131: =cut 132: 133: package Apache::edit; 134: 135: use strict; 136: use Apache::lonnet; 137: use HTML::Entities(); 138: use Apache::lonlocal; 139: use lib '/home/httpd/lib/perl/'; 140: use LONCAPA; 141: 142: 143: # Global Vars 144: # default list of colors to use in editing 145: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f'); 146: # depth of nesting of edit 147: $Apache::edit::colordepth=0; 148: @Apache::edit::inserttag=(); 149: # image-type responses: active background image and curdepth at definition 150: $Apache::edit::bgimgsrc=''; 151: $Apache::edit::bgimgsrccurdepth=''; 152: 153: sub initialize_edit { 154: $Apache::edit::colordepth=0; 155: @Apache::edit::inserttag=(); 156: } 157: 158: sub tag_start { 159: my ($target,$token,$description) = @_; 160: my $result=''; 161: if ($target eq "edit") { 162: my $tag=$token->[1]; 163: if (!$description) { 164: $description=&mt(&Apache::lonxml::description($token)); 165: if (!$description) { $description="<$tag>"; } 166: } 167: $result.= &start_table($token)."<tr><td>$description</td> 168: <td>".&mt('Delete?').' '. 169: &deletelist($target,$token) 170: ."</td> 171: <td>". 172: &insertlist($target,$token); 173: #<td>". 174: # &movebuttons($target,$token). 175: # "</tr><tr><td colspan=\"3\">\n"; 176: my @help = Apache::lonxml::helpinfo($token); 177: if ($help[0]) { 178: $result .= '</td><td class="LC_edit_problem_latexhelper">'. 179: Apache::loncommon::help_open_topic(@help); 180: } else { $result .= "</td><td> "; } 181: $result .= &end_row().&start_spanning_row(); 182: } 183: return $result; 184: } 185: 186: sub tag_end { 187: my ($target,$token,$description) = @_; 188: my $result=''; 189: if ($target eq 'edit') { 190: $result.="</td></tr>".&end_table()."\n"; 191: } 192: return $result; 193: } 194: 195: sub start_table { 196: my ($token)=@_; 197: my $tag = &Apache::lonxml::get_tag($token); 198: 199: my $color = $Apache::lonxml::insertlist{"$tag.color"}; 200: &Apache::lonxml::debug(" $tag -- $color"); 201: if (!defined($color)) { 202: $color = $Apache::edit::colorlist[$Apache::edit::colordepth]; 203: } 204: $Apache::edit::colordepth++; 205: push(@Apache::edit::inserttag,$token->[1]); 206: my $result='<div>'; 207: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="3" cellpadding="2">'; 208: return $result; 209: } 210: 211: sub end_table { 212: $Apache::edit::colordepth--; 213: my $result='</table></div>'; 214: $result.='<div><table><tr><td>'; 215: 216: my ($tagname,$closingtag); 217: if (defined($Apache::edit::inserttag[-2])) { 218: $tagname=$Apache::edit::inserttag[-2]; 219: } else { 220: if ($Apache::lonhomework::parsing_a_task) { 221: $tagname='Task'; 222: } else { 223: $tagname='problem'; 224: } 225: } 226: if (defined($Apache::edit::inserttag[-1])) { 227: $closingtag=$Apache::edit::inserttag[-1]; 228: } 229: $result.=&innerinsertlist('edit',$tagname,$closingtag). 230: "</td></tr></table></div>"; 231: my $last = pop(@Apache::edit::inserttag); 232: return $result; 233: } 234: 235: sub start_spanning_row { return '<tr><td colspan="5" bgcolor="#F0F0F0">';} 236: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; } 237: sub end_row { return '</td></tr>'; } 238: 239: sub movebuttons { 240: my ($target,$token) = @_; 241: my $result='<input type="submit" name="moveup.'. 242: $Apache::lonxml::curdepth.'" value="Move Up" />'; 243: $result.='<input type="submit" name="movedown.'. 244: $Apache::lonxml::curdepth.'" value="Move Down" />'; 245: return $result; 246: } 247: 248: sub deletelist { 249: my ($target,$token) = @_; 250: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\"> 251: <option></option> 252: <option>".&mt('yes')."</option> 253: </select>"; 254: return $result; 255: } 256: 257: sub handle_delete { 258: if (!$env{"form.delete_$Apache::lonxml::curdepth"}) { return ''; } 259: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 260: my $result=0; 261: if ($space) { 262: my $sub1="$space\:\:delete_$token->[1]"; 263: { 264: no strict 'refs'; 265: if (defined &$sub1) { 266: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style); 267: } 268: } 269: } 270: if (!$result) { 271: my $endtag='/'.$token->[1]; 272: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser,$style); 273: $$parser['-1']->get_token(); 274: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]"); 275: &Apache::lonxml::end_tag($tagstack,$parstack,$token); 276: } 277: return 1; 278: } 279: 280: sub get_insert_list { 281: my ($tagname) = @_; 282: my $result=''; 283: my @tags= (); 284: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist)))); 285: if ($Apache::lonxml::insertlist{"$tagname.which"}) { 286: push (@tags, @{ $Apache::lonxml::insertlist{"$tagname.which"} }); 287: } 288: foreach my $namespace (@Apache::lonxml::namespace) { 289: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) { 290: push (@tags, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} }); 291: } 292: } 293: if (@tags) { 294: my %options; 295: foreach my $tag (@tags) { 296: my $descrip=$Apache::lonxml::insertlist{"$tag.description"}; 297: my $tagnum =$Apache::lonxml::insertlist{"$tag.num"}; 298: $options{$descrip} ="<option value=\"$tagnum\">". 299: &mt($descrip)."</option>\n"; 300: } 301: foreach my $option (sort(keys(%options))) {$result.=$options{$option};} 302: if ($result) { $result='<option selected="selected"></option>'.$result; } 303: } 304: return $result; 305: } 306: 307: sub insertlist { 308: my ($target,$token) = @_; 309: return &innerinsertlist($target,$token->[1]); 310: } 311: 312: sub innerinsertlist { 313: my ($target,$tagname,$closingtag) = @_; 314: my $result; 315: my $after=''; 316: if ($closingtag) { 317: $after='_after_'.$closingtag; 318: } 319: if ($target eq 'edit') { 320: my $optionlist= &get_insert_list($tagname); 321: if ($optionlist) { 322: $result = &mt('Insert:')." 323: <select name=\"insert$after\_$Apache::lonxml::curdepth\"> 324: $optionlist 325: </select>" 326: } else { 327: $result=" "; 328: } 329: } 330: return $result; 331: } 332: 333: sub handle_insert { 334: if ($env{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; } 335: my $tagnum = $env{"form.insert_$Apache::lonxml::curdepth"}; 336: return &do_insert($tagnum); 337: } 338: 339: sub handle_insertafter { 340: my $tagname=shift; 341: if ($env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '') { 342: return ''; 343: } 344: my $tagnum =$env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"}; 345: return &do_insert($tagnum,1); 346: } 347: 348: sub do_insert { 349: my ($tagnum,$after) = @_; 350: my $result; 351: 352: my $newtag = $Apache::lonxml::insertlist{"$tagnum.tag"}; 353: my $func = $Apache::lonxml::insertlist{"$newtag.function"}; 354: if ($func eq 'default') { 355: my $namespace; 356: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); } 357: my $depth = scalar(@Apache::lonxml::depthcounter); 358: $depth -- if ($after); 359: my $inset = "\t"x$depth; 360: $result.="\n$inset<$newtag></$newtag>"; 361: } else { 362: if (defined(&$func)) { 363: { 364: no strict 'refs'; 365: $result.=&$func(); 366: } 367: } else { 368: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined. ($tagnum)"); 369: } 370: } 371: return $result; 372: } 373: 374: sub insert_img { 375: return ' 376: <img />'; 377: } 378: 379: sub insert_responseparam { 380: return ' 381: <responseparam />'; 382: } 383: 384: sub insert_parameter { 385: return ' 386: <parameter />'; 387: } 388: 389: sub insert_formularesponse { 390: return ' 391: <formularesponse answer="" samples=""> 392: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" /> 393: <textline size="25"/> 394: <hintgroup> 395: <startouttext /><endouttext /> 396: </hintgroup> 397: </formularesponse>'; 398: } 399: 400: sub insert_functionplotresponse { 401: return ' 402: <functionplotresponse> 403: <functionplotelements> 404: </functionplotelements> 405: <functionplotruleset> 406: </functionplotruleset> 407: </functionplotresponse>'; 408: } 409: 410: sub insert_spline { 411: return ' 412: <spline />'; 413: } 414: 415: sub insert_backgroundplot { 416: return ' 417: <backgroundplot />'; 418: } 419: 420: sub insert_plotobject { 421: return ' 422: <plotobject />'; 423: } 424: 425: sub insert_plotvector { 426: return ' 427: <plotvector />'; 428: } 429: 430: sub insert_drawvectorsum { 431: return ' 432: <drawvectorsum />'; 433: } 434: 435: 436: sub insert_functionplotrule { 437: return ' 438: <functionplotrule />'; 439: } 440: 441: sub insert_functionplotvectorrule { 442: return ' 443: <functionplotvectorrule />'; 444: } 445: 446: sub insert_functionplotvectorsumrule { 447: return ' 448: <functionplotvectorsumrule />'; 449: } 450: 451: sub insert_functionplotcustomrule { 452: return ' 453: <functionplotcustomrule> 454: <answer type="loncapa/perl"> 455: # &fpr_val("label"), &fpr_f($x), &fpr_dfdx($x), &fpr_d2fdx2($x) 456: # ($xs,$xe,$ys,$ye)=&fpr_vectorcoords("Name"), ($x,$y)=&fpr_objectcoords("Name") 457: # &fpr_vectorlength("Name"), &fpr_vectorangle("Name") 458: 459: # Return 0 or 1 460: return 1; 461: </answer> 462: </functionplotcustomrule>'; 463: } 464: 465: sub insert_functionplotruleset { 466: return ' 467: <functionplotruleset> 468: <functionplotrule /> 469: </functionplotruleset>'; 470: } 471: 472: sub insert_functionplotelements { 473: return ' 474: <functionplotelements> 475: <spline /> 476: </functionplotelements>'; 477: } 478: 479: sub insert_numericalresponse { 480: return ' 481: <numericalresponse answer=""> 482: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" /> 483: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" /> 484: <textline /> 485: <hintgroup> 486: <startouttext /><endouttext /> 487: </hintgroup> 488: </numericalresponse>'; 489: } 490: 491: sub insert_externalresponse { 492: return ' 493: <externalresponse url="" answer="" answerdisplay="" form=""> 494: <textfield spellcheck="none" /> 495: </externalresponse>'; 496: } 497: 498: sub insert_customresponse { 499: return ' 500: <customresponse> 501: <answer type="loncapa/perl"> 502: </answer> 503: <textline /> 504: <hintgroup> 505: <startouttext /><endouttext /> 506: </hintgroup> 507: </customresponse>'; 508: } 509: 510: sub insert_customresponse_answer { 511: return ' 512: <answer type="loncapa/perl"> 513: </answer> 514: '; 515: } 516: 517: sub insert_customhint { 518: return ' 519: <customhint> 520: <answer type="loncapa/perl"> 521: </answer> 522: </customhint>'; 523: } 524: 525: sub insert_customhint_answer { 526: return ' 527: <answer type="loncapa/perl"> 528: </answer> 529: '; 530: } 531: 532: sub insert_mathresponse { 533: return ' 534: <mathresponse> 535: <answer> 536: </answer> 537: <textline /> 538: <hintgroup> 539: <startouttext /> 540: <endouttext /> 541: </hintgroup> 542: </mathresponse>'; 543: } 544: 545: sub insert_mathresponse_answer { 546: return ' 547: <answer> 548: </answer> 549: '; 550: } 551: 552: sub insert_mathhint { 553: return ' 554: <mathhint> 555: <answer> 556: </answer> 557: </mathhint>'; 558: } 559: 560: sub insert_mathhint_answer { 561: return ' 562: <answer> 563: </answer> 564: '; 565: } 566: 567: sub insert_stringresponse { 568: return ' 569: <stringresponse answer="" type=""> 570: <textline /> 571: <hintgroup> 572: <startouttext /><endouttext /> 573: </hintgroup> 574: </stringresponse>'; 575: } 576: 577: sub insert_essayresponse { 578: return ' 579: <essayresponse> 580: <textfield></textfield> 581: </essayresponse>'; 582: } 583: 584: sub insert_imageresponse { 585: return ' 586: <imageresponse max="1"> 587: <foilgroup> 588: <foil> 589: </foil> 590: </foilgroup> 591: <hintgroup> 592: <startouttext /><endouttext /> 593: </hintgroup> 594: </imageresponse>'; 595: } 596: 597: sub insert_optionresponse { 598: return ' 599: <optionresponse max="10"> 600: <foilgroup options=""> 601: <foil> 602: <startouttext /><endouttext /> 603: </foil> 604: </foilgroup> 605: <hintgroup> 606: <startouttext /><endouttext /> 607: </hintgroup> 608: </optionresponse>'; 609: } 610: 611: sub insert_organicresponse { 612: return ' 613: <organicresponse> 614: <textline /> 615: <hintgroup> 616: <startouttext /><endouttext /> 617: </hintgroup> 618: </organicresponse>'; 619: } 620: 621: sub insert_organicstructure { 622: return ' 623: <organicstructure /> 624: '; 625: } 626: 627: sub insert_radiobuttonresponse { 628: return ' 629: <radiobuttonresponse max="10"> 630: <foilgroup> 631: <foil> 632: <startouttext /><endouttext /> 633: </foil> 634: </foilgroup> 635: <hintgroup> 636: <startouttext /><endouttext /> 637: </hintgroup> 638: </radiobuttonresponse>'; 639: } 640: 641: sub insert_reactionresponse { 642: return ' 643: <reactionresponse> 644: <textline /> 645: <hintgroup> 646: <startouttext /><endouttext /> 647: </hintgroup> 648: </reactionresponse>'; 649: } 650: 651: sub insert_rankresponse { 652: return ' 653: <rankresponse max="10"> 654: <foilgroup options=""> 655: <foil> 656: <startouttext /><endouttext /> 657: </foil> 658: </foilgroup> 659: <hintgroup> 660: <startouttext /><endouttext /> 661: </hintgroup> 662: </rankresponse>'; 663: } 664: 665: sub insert_matchresponse { 666: return ' 667: <matchresponse max="10"> 668: <foilgroup options=""> 669: <itemgroup> 670: <item> 671: <startouttext /><endouttext /> 672: </item> 673: </itemgroup> 674: <foil> 675: <startouttext /><endouttext /> 676: </foil> 677: </foilgroup> 678: <hintgroup> 679: <startouttext /><endouttext /> 680: </hintgroup> 681: </matchresponse>'; 682: } 683: 684: sub insert_startpartmarker { return '<startpartmarker />'; } 685: sub insert_endpartmarker { return '<endpartmarker />'; } 686: 687: sub insert_displayduedate { return '<displayduedate />'; } 688: sub insert_displaytitle { return '<displaytitle />'; } 689: sub insert_hintpart { 690: return ' 691: <hintpart on="default"> 692: <startouttext/><endouttext /> 693: </hintpart>'; 694: } 695: 696: sub insert_hintgroup { 697: return ' 698: <hintgroup> 699: <startouttext /><endouttext /> 700: </hintgroup>'; 701: } 702: 703: sub insert_numericalhint { 704: return ' 705: <numericalhint> 706: </numericalhint>'; 707: } 708: 709: sub insert_reactionhint { 710: return ' 711: <reactionhint> 712: </reactionhint>'; 713: } 714: 715: sub insert_organichint { 716: return ' 717: <organichint> 718: </organichint>'; 719: } 720: 721: sub insert_stringhint { 722: return ' 723: <stringhint> 724: </stringhint>'; 725: } 726: 727: sub insert_formulahint { 728: return ' 729: <formulahint> 730: </formulahint>'; 731: } 732: 733: sub insert_radiobuttonhint { 734: return ' 735: <radiobuttonhint> 736: </radiobuttonhint>'; 737: } 738: 739: sub insert_optionhint { 740: return ' 741: <optionhint> 742: </optionhint>'; 743: } 744: 745: sub insert_startouttext { 746: return "<startouttext /><endouttext />"; 747: } 748: 749: sub insert_script { 750: return "\n<script type=\"loncapa/perl\"></script>"; 751: } 752: 753: sub js_change_detection { 754: my $unsaved=&mt("There are unsaved changes"); 755: return (<<SCRIPT); 756: <script type="text/javascript"> 757: // <![CDATA[ 758: var clean = true; 759: var is_submit = false; 760: var still_ask = false; 761: function compareForm(event_) { 762: if (!event_ && window.event) { 763: event_ = window.event; 764: } 765: if ((!is_submit || (is_submit && still_ask)) && !clean) { 766: still_ask = false; 767: is_submit = false; 768: event_.returnValue = "$unsaved"; 769: return "$unsaved"; 770: } 771: } 772: function unClean() { 773: clean=false; 774: } 775: window.onbeforeunload = compareForm; 776: // ]]> 777: </script> 778: SCRIPT 779: } 780: 781: sub form_change_detection { 782: return ' onsubmit="is_submit=true;" '; 783: } 784: 785: sub element_change_detection { 786: return ' onchange="unClean();" '; 787: } 788: 789: sub submit_ask_anyway { 790: my ($extra_action) = @_; 791: return ' onclick="still_ask=true;'.$extra_action.'" '; 792: } 793: 794: sub submit_dont_ask { 795: my ($extra_action) = @_; 796: return ' onclick="is_submit=true;'.$extra_action.'" '; 797: } 798: 799: sub js_update_linknum { 800: return (<<SCRIPT); 801: <script type="text/javascript"> 802: // <![CDATA[ 803: function updateNumber(name,index,caller,textprompt) { 804: var pickitem = document.getElementById(name+'_'+index); 805: var picknumtext = document.getElementById(name+'_numtext_'+index); 806: if (pickitem.checked) { 807: var showval = ''; 808: if (pickitem.value != 'nochoice') { 809: showval = pickitem.value; 810: } 811: var picknum=prompt(textprompt,showval); 812: if (picknum == '' || picknum == null) { 813: if (caller == 'check') { 814: pickitem.checked=false; 815: pickitem.value='nochoice'; 816: } 817: } else { 818: picknum.toString(); 819: var regexdigit=/^\\d+\$/; 820: if (regexdigit.test(picknum)) { 821: pickitem.value = picknum; 822: picknumtext.innerHTML = ' <a href="javascript:updateNumber(\\''+name+'\\',\\''+index+'\\',\\'link\\',\\''+textprompt+'\\');">'+picknum+'</a>'; 823: } else { 824: if (caller == 'check') { 825: pickitem.checked=false; 826: pickitem.value='nochoice'; 827: } 828: return; 829: } 830: } 831: } else { 832: pickitem.value = ''; 833: picknumtext.innerHTML = ''; 834: } 835: } 836: 837: // ]]> 838: </script> 839: SCRIPT 840: 841: } 842: 843: sub textarea_sizes { 844: my ($data)=@_; 845: my $count=0; 846: my $maxlength=-1; 847: foreach (split ("\n", $$data)) { 848: $count+=int(length($_)/79); 849: $count++; 850: if (length($_) > $maxlength) { $maxlength = length($_); } 851: } 852: my $rows = $count; 853: my $cols = $maxlength; 854: return ($rows,$cols); 855: } 856: 857: sub editline { 858: my ($tag,$data,$description,$size)=@_; 859: $data=&HTML::Entities::encode($data,'<>&"'); 860: if ($description) { $description=$description."<br />"; } 861: my $change_code = &element_change_detection(); 862: my $result = <<"END"; 863: $description 864: <input type="text" name="homework_edit_$Apache::lonxml::curdepth" 865: value="$data" size="$size" $change_code /> 866: END 867: return $result; 868: } 869: 870: sub editfield { 871: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_; 872: 873: my ($rows,$cols)=&textarea_sizes(\$data); 874: my $textareaclass; 875: 876: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) { 877: $rows+=7; # make room for HTMLarea 878: $minheight+=7; # make room for HTMLarea 879: $textareaclass = ' class="LC_richDefaultOff"'; 880: } 881: if ($cols > 80) { $cols = 80; } 882: if ($cols < $minwidth ) { $cols = $minwidth; } 883: if ($rows < $minheight) { $rows = $minheight; } 884: if ($description) { $description='<br />'.&mt($description).'<br />'; } 885: 886: # remove typesetting whitespace from between data and the end tag 887: # to make the edit look prettier 888: $data =~ s/\n?[ \t]*$//; 889: 890: return $description."\n".'<textarea style="width:99%" rows="'.$rows. 891: '" cols="'.$cols.'" name="homework_edit_'. 892: $Apache::lonxml::curdepth.'" id="homework_edit_'. 893: $Apache::lonxml::curdepth.'" '.&element_change_detection(). 894: $textareaclass.'>'. 895: &HTML::Entities::encode($data,'<>&"').'</textarea>'. 896: ($usehtmlarea?'<br />'.&Apache::lonhtmlcommon::spelllink('lonhomework', 897: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n"; 898: } 899: 900: sub modifiedfield { 901: my ($endtag,$parser) = @_; 902: my $result; 903: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"}; 904: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser); 905: # textareas throw away intial \n 906: if ($bodytext=~/^\n/) { 907: $result="\n".$result; 908: } 909: # if there is typesetting whitespace from between the data and the end tag 910: # restore to keep the source looking pretty 911: if ($bodytext =~ /(\n?[ \t]*)$/) { 912: $result .= $1; 913: } 914: return $result; 915: } 916: 917: # Returns a 1 if the token has been modified and you should rebuild the tag 918: # side-effects, will modify the $token if new values are found 919: sub get_new_args { 920: my ($token,$parstack,$safeeval,@args)=@_; 921: my $rebuild=0; 922: foreach my $arg (@args) { 923: #just want the string that it was set to 924: my $value=$token->[2]->{$arg}; 925: my $element=&html_element_name($arg); 926: my $newvalue=$env{"form.$element"}; 927: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:"); 928: if (defined($newvalue) && $value ne $newvalue) { 929: if (ref($newvalue) eq 'ARRAY') { 930: $token->[2]->{$arg}=join(',',@$newvalue); 931: } else { 932: $token->[2]->{$arg}=$newvalue; 933: } 934: $rebuild=1; 935: # add new attributes to the of the attribute seq 936: if (!grep { $arg eq $_ } (@{ $token->[3] })) { 937: push(@{ $token->[3] },$arg); 938: } 939: } elsif (!defined($newvalue) && defined($value)) { 940: delete($token->[2]->{$arg}); 941: $rebuild=1; 942: } 943: } 944: return $rebuild; 945: } 946: 947: # looks for /> on start tags 948: sub rebuild_tag { 949: my ($token) = @_; 950: my $result; 951: if ($token->[0] eq 'S') { 952: $result = '<'.$token->[1]; 953: foreach my $attribute (@{ $token->[3] }) { 954: my $value = $token->[2]{$attribute}; 955: next if ($value eq ''); 956: $value =~s/^\s+|\s+$//g; 957: $value =~s/\"//g; 958: &Apache::lonxml::debug("setting :$attribute: to :$value:"); 959: $result.=' '.$attribute.'="'.$value.'"'; 960: } 961: if ($token->[4] =~ m:/>$:) { 962: $result.=' />'; 963: } else { 964: $result.='>'; 965: } 966: } elsif ( $token->[0] eq 'E' ) { 967: $result = '</'.$token->[1].'>'; 968: } 969: return $result; 970: } 971: 972: sub html_element_name { 973: my ($name) = @_; 974: return $name.'_'.$Apache::lonxml::curdepth; 975: } 976: 977: sub hidden_arg { 978: my ($name,$token) = @_; 979: my $result; 980: my $arg=$token->[2]{$name}; 981: $result='<input name="'.&html_element_name($name). 982: '" type="hidden" value="'.$arg.'" />'; 983: return $result; 984: } 985: 986: sub checked_arg { 987: my ($description,$name,$list,$token,$onclick,$useid) = @_; 988: my $result; 989: my $optionlist=""; 990: my $allselected=$token->[2]{$name}; 991: $result=&mt($description); 992: foreach my $option (@$list) { 993: my ($value,$text); 994: if ( ref($option) eq 'ARRAY') { 995: $value='value="'.$$option[0].'"'; 996: $text=&mt($$option[1]); 997: $option=$$option[0]; 998: } else { 999: $text=&mt($option); 1000: $value='value="'.$option.'"'; 1001: } 1002: $result.=' <span class="LC_edit_opt"><label><input type="checkbox" '.$value.' name="'. 1003: &html_element_name($name).'"'; 1004: foreach my $selected (split(/,/,$allselected)) { 1005: if ( $selected eq $option ) { 1006: $result.=' checked="checked" '; 1007: last; 1008: } 1009: } 1010: if ($useid) { 1011: $result .= ' id="'.&html_element_name($name).'" '; 1012: } 1013: $result.=&element_change_detection().$onclick.' />'.$text.'</label></span>'."\n"; 1014: } 1015: return $result; 1016: } 1017: 1018: sub text_arg { 1019: my ($description,$name,$token,$size, $class) = @_; 1020: my $result; 1021: if (!defined $size) { $size=20; } 1022: my $arg=$token->[2]{$name}; 1023: $result=&mt($description).' <input name="'.&html_element_name($name). 1024: '" type="text" value="'.$arg.'" size="'.$size.'" '; 1025: if (defined $class) { 1026: $result .= 'class="' . $class . '" '; 1027: } 1028: $result .= &element_change_detection().'/>'; 1029: return ' <span class="LC_edit_opt">'.$result.'</span>'; 1030: } 1031: 1032: sub select_arg { 1033: my ($description,$name,$list,$token) = @_; 1034: my $result; 1035: my $optionlist=""; 1036: my $selected=$token->[2]{$name}; 1037: if (ref($list) eq 'ARRAY') { 1038: foreach my $option (@{$list}) { 1039: my ($text,$value); 1040: if (ref($option) eq 'ARRAY') { 1041: $value='value="'.&HTML::Entities::encode($option->[0]).'"'; 1042: $text=$option->[1]; 1043: $option=$option->[0]; 1044: } else { 1045: $text=$option; 1046: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"'; 1047: } 1048: if ( $selected eq $option ) { 1049: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n"; 1050: } else { 1051: $optionlist.="<option $value >".&mt($text)."</option>\n"; 1052: } 1053: } 1054: } 1055: $result.=' <span class="LC_edit_opt">'.&mt($description).' <select name="'. 1056: &html_element_name($name).'" '.&element_change_detection().' > 1057: '.$optionlist.' 1058: </select></span>'; 1059: return $result; 1060: } 1061: 1062: sub select_or_text_arg { 1063: my ($description,$name,$list,$token,$size) = @_; 1064: my $result; 1065: my $optionlist=""; 1066: my $found=0; 1067: my $selected=$token->[2]{$name}; 1068: if (ref($list) eq 'ARRAY') { 1069: foreach my $option (@{$list}) { 1070: my ($text,$value); 1071: if (ref($option) eq 'ARRAY') { 1072: $value='value="'.&HTML::Entities::encode($option->[0]).'"'; 1073: $text=$option->[1]; 1074: $option=$option->[0]; 1075: } else { 1076: $text=$option; 1077: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"'; 1078: } 1079: if ( $selected eq $option ) { 1080: $optionlist.="<option $value selected=\"selected\">$text</option>\n"; 1081: $found=1; 1082: } else { 1083: $optionlist.="<option $value>$text</option>\n"; 1084: } 1085: } 1086: } 1087: $optionlist.="<option value=\"TYPEDINVALUE\"". 1088: ((!$found)?' selected="selected"':''). 1089: ">".&mt('Type-in value')."</option>\n"; 1090: # 1091: my $change_code=&element_change_detection(); 1092: my $element=&html_element_name($name); 1093: my $selectelement='select_list_'.$element; 1094: my $typeinelement='type_in_'.$element; 1095: my $typeinvalue=($found?'':$selected); 1096: # 1097: my $hiddenvalue='this.form.'.$element.'.value'; 1098: my $selectedindex='this.form.'.$selectelement.'.selectedIndex'; 1099: my $selectedvalue='this.form.'.$selectelement. 1100: '.options['.$selectedindex.'].value'; 1101: my $typedinvalue='this.form.'.$typeinelement.'.value'; 1102: my $selecttypeinindex='this.form.'.$selectelement.'.options.length'; 1103: $description=&mt($description); 1104: # 1105: return (<<ENDSELECTORTYPE); 1106: <span class="LC_edit_opt"> 1107: $description 1108:  <select name="$selectelement" 1109: onchange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" > 1110: $optionlist 1111: </select> 1112: <input type="text" size="$size" name="$typeinelement" 1113: value="$typeinvalue" 1114: onchange="$hiddenvalue=$typedinvalue;" 1115: onfocus="$selectedindex=$selecttypeinindex-1;" /> 1116: <input type="hidden" name="$element" value="$selected" $change_code /> 1117: </span> 1118: ENDSELECTORTYPE 1119: } 1120: 1121: #----------------------------------------------------- image coordinates 1122: # single image coordinates, x, y 1123: sub entercoords { 1124: my ($idx,$idy,$mode,$width,$height) = @_; 1125: unless ($Apache::edit::bgimgsrc) { return ''; } 1126: if ($idx) { $idx.='_'; } 1127: if ($idy) { $idy.='_'; } 1128: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc)); 1129: my $form = 'lonhomework'; 1130: my $element; 1131: if (! defined($mode) || $mode eq 'attribute') { 1132: $element = &escape("$Apache::lonxml::curdepth"); 1133: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag> 1134: $element = &escape('homework_edit_'. 1135: $Apache::lonxml::curdepth); 1136: } 1137: my $id=$Apache::lonxml::curdepth; 1138: my %data=("imagechoice.$id.type" =>'point', 1139: "imagechoice.$id.formname" =>$form, 1140: "imagechoice.$id.formx" =>"$idx$element", 1141: "imagechoice.$id.formy" =>"$idy$element", 1142: "imagechoice.$id.file" =>$bgfile, 1143: "imagechoice.$id.formcoord" =>$element); 1144: if ($height) { 1145: $data{"imagechoice.$id.formheight"}=$height.'_'. 1146: $Apache::edit::bgimgsrccurdepth; 1147: } 1148: if ($width) { 1149: $data{"imagechoice.$id.formwidth"}=$width.'_'. 1150: $Apache::edit::bgimgsrccurdepth; 1151: } 1152: &Apache::lonnet::appenv(\%data); 1153: my $text="Click Coordinates"; 1154: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>'; 1155: return $result; 1156: } 1157: 1158: # coordinates (x1,y1)-(x2,y2)... 1159: # mode can be either box, or polygon 1160: sub entercoord { 1161: my ($idx,$mode,$width,$height,$type) = @_; 1162: unless ($Apache::edit::bgimgsrc) { return ''; } 1163: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc)); 1164: my $form = 'lonhomework'; 1165: my $element; 1166: if (! defined($mode) || $mode eq 'attribute') { 1167: $element = &escape("$idx\_$Apache::lonxml::curdepth"); 1168: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag> 1169: $element = &escape('homework_edit_'. 1170: $Apache::lonxml::curdepth); 1171: } 1172: my $id=$Apache::lonxml::curdepth; 1173: my %data=("imagechoice.$id.type" =>$type, 1174: "imagechoice.$id.formname" =>$form, 1175: "imagechoice.$id.file" =>$bgfile, 1176: "imagechoice.$id.formcoord" =>$element); 1177: if ($height) { 1178: $data{"imagechoice.$id.formheight"}=$height.'_'. 1179: $Apache::edit::bgimgsrccurdepth; 1180: } 1181: if ($width) { 1182: $data{"imagechoice.$id.formwidth"}=$width.'_'. 1183: $Apache::edit::bgimgsrccurdepth; 1184: } 1185: &Apache::lonnet::appenv(\%data); 1186: my $text="Enter Coordinates"; 1187: if ($type eq 'polygon') { $text='Create Polygon Data'; } 1188: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>'; 1189: return $result; 1190: } 1191: 1192: sub deletecoorddata { 1193: &Apache::lonnet::delenv('imagechoice.'); 1194: } 1195: 1196: #----------------------------------------------------- browse 1197: sub browse { 1198: # insert a link to call up the filesystem browser (lonindexer) 1199: my ($id, $mode, $titleid, $only) = @_; 1200: my $form = 'lonhomework'; 1201: my $element; 1202: if (! defined($mode) || $mode eq 'attribute') { 1203: $element = &escape("$id\_$Apache::lonxml::curdepth"); 1204: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag> 1205: $element = &escape('homework_edit_'. 1206: $Apache::lonxml::curdepth); 1207: } 1208: my $titleelement; 1209: if ($titleid) { 1210: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'"; 1211: } else { 1212: $titleelement=",'$only'"; 1213: } 1214: my $result = <<"ENDBUTTON"; 1215: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a> 1216: ENDBUTTON 1217: return $result; 1218: } 1219: 1220: #----------------------------------------------------- browse 1221: sub search { 1222: # insert a link to call up the filesystem browser (lonindexer) 1223: my ($id, $mode, $titleid) = @_; 1224: my $form = 'lonhomework'; 1225: my $element; 1226: if (! defined($mode) || $mode eq 'attribute') { 1227: $element = &escape("$id\_$Apache::lonxml::curdepth"); 1228: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag> 1229: $element = &escape('homework_edit_'. 1230: $Apache::lonxml::curdepth); 1231: } 1232: my $titleelement; 1233: if ($titleid) { 1234: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'"; 1235: } 1236: my $result = <<"ENDBUTTON"; 1237: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a> 1238: ENDBUTTON 1239: return $result; 1240: } 1241: 1242: 1243: 1; 1244: __END__ 1245: 1246: