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/testing/selenium-core/lib/scriptaculous/controls.js

http://datanucleus-appengine.googlecode.com/
JavaScript | 815 lines | 651 code | 79 blank | 85 comment | 131 complexity | 23cef7404ffe6d410b0c235433771d51 MD5 | raw file
  1// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
  2//           (c) 2005 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
  3//           (c) 2005 Jon Tirsen (http://www.tirsen.com)
  4// Contributors:
  5//  Richard Livsey
  6//  Rahul Bhargava
  7//  Rob Wills
  8// 
  9// See scriptaculous.js for full license.
 10
 11// Autocompleter.Base handles all the autocompletion functionality 
 12// that's independent of the data source for autocompletion. This
 13// includes drawing the autocompletion menu, observing keyboard
 14// and mouse events, and similar.
 15//
 16// Specific autocompleters need to provide, at the very least, 
 17// a getUpdatedChoices function that will be invoked every time
 18// the text inside the monitored textbox changes. This method 
 19// should get the text for which to provide autocompletion by
 20// invoking this.getToken(), NOT by directly accessing
 21// this.element.value. This is to allow incremental tokenized
 22// autocompletion. Specific auto-completion logic (AJAX, etc)
 23// belongs in getUpdatedChoices.
 24//
 25// Tokenized incremental autocompletion is enabled automatically
 26// when an autocompleter is instantiated with the 'tokens' option
 27// in the options parameter, e.g.:
 28// new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
 29// will incrementally autocomplete with a comma as the token.
 30// Additionally, ',' in the above example can be replaced with
 31// a token array, e.g. { tokens: [',', '\n'] } which
 32// enables autocompletion on multiple tokens. This is most 
 33// useful when one of the tokens is \n (a newline), as it 
 34// allows smart autocompletion after linebreaks.
 35
 36var Autocompleter = {}
 37Autocompleter.Base = function() {};
 38Autocompleter.Base.prototype = {
 39  baseInitialize: function(element, update, options) {
 40    this.element     = $(element); 
 41    this.update      = $(update);  
 42    this.hasFocus    = false; 
 43    this.changed     = false; 
 44    this.active      = false; 
 45    this.index       = 0;     
 46    this.entryCount  = 0;
 47
 48    if (this.setOptions)
 49      this.setOptions(options);
 50    else
 51      this.options = options || {};
 52
 53    this.options.paramName    = this.options.paramName || this.element.name;
 54    this.options.tokens       = this.options.tokens || [];
 55    this.options.frequency    = this.options.frequency || 0.4;
 56    this.options.minChars     = this.options.minChars || 1;
 57    this.options.onShow       = this.options.onShow || 
 58    function(element, update){ 
 59      if(!update.style.position || update.style.position=='absolute') {
 60        update.style.position = 'absolute';
 61        Position.clone(element, update, {setHeight: false, offsetTop: element.offsetHeight});
 62      }
 63      Effect.Appear(update,{duration:0.15});
 64    };
 65    this.options.onHide = this.options.onHide || 
 66    function(element, update){ new Effect.Fade(update,{duration:0.15}) };
 67
 68    if (typeof(this.options.tokens) == 'string') 
 69      this.options.tokens = new Array(this.options.tokens);
 70
 71    this.observer = null;
 72    
 73    this.element.setAttribute('autocomplete','off');
 74
 75    Element.hide(this.update);
 76
 77    Event.observe(this.element, "blur", this.onBlur.bindAsEventListener(this));
 78    Event.observe(this.element, "keypress", this.onKeyPress.bindAsEventListener(this));
 79  },
 80
 81  show: function() {
 82    if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
 83    if(!this.iefix && 
 84      (navigator.appVersion.indexOf('MSIE')>0) &&
 85      (navigator.userAgent.indexOf('Opera')<0) &&
 86      (Element.getStyle(this.update, 'position')=='absolute')) {
 87      new Insertion.After(this.update, 
 88       '<iframe id="' + this.update.id + '_iefix" '+
 89       'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
 90       'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
 91      this.iefix = $(this.update.id+'_iefix');
 92    }
 93    if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
 94  },
 95  
 96  fixIEOverlapping: function() {
 97    Position.clone(this.update, this.iefix);
 98    this.iefix.style.zIndex = 1;
 99    this.update.style.zIndex = 2;
100    Element.show(this.iefix);
101  },
102
103  hide: function() {
104    this.stopIndicator();
105    if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
106    if(this.iefix) Element.hide(this.iefix);
107  },
108
109  startIndicator: function() {
110    if(this.options.indicator) Element.show(this.options.indicator);
111  },
112
113  stopIndicator: function() {
114    if(this.options.indicator) Element.hide(this.options.indicator);
115  },
116
117  onKeyPress: function(event) {
118    if(this.active)
119      switch(event.keyCode) {
120       case Event.KEY_TAB:
121       case Event.KEY_RETURN:
122         this.selectEntry();
123         Event.stop(event);
124       case Event.KEY_ESC:
125         this.hide();
126         this.active = false;
127         Event.stop(event);
128         return;
129       case Event.KEY_LEFT:
130       case Event.KEY_RIGHT:
131         return;
132       case Event.KEY_UP:
133         this.markPrevious();
134         this.render();
135         if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
136         return;
137       case Event.KEY_DOWN:
138         this.markNext();
139         this.render();
140         if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
141         return;
142      }
143     else 
144       if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN || 
145         (navigator.appVersion.indexOf('AppleWebKit') > 0 && event.keyCode == 0)) return;
146
147    this.changed = true;
148    this.hasFocus = true;
149
150    if(this.observer) clearTimeout(this.observer);
151      this.observer = 
152        setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
153  },
154
155  activate: function() {
156    this.changed = false;
157    this.hasFocus = true;
158    this.getUpdatedChoices();
159  },
160
161  onHover: function(event) {
162    var element = Event.findElement(event, 'LI');
163    if(this.index != element.autocompleteIndex) 
164    {
165        this.index = element.autocompleteIndex;
166        this.render();
167    }
168    Event.stop(event);
169  },
170  
171  onClick: function(event) {
172    var element = Event.findElement(event, 'LI');
173    this.index = element.autocompleteIndex;
174    this.selectEntry();
175    this.hide();
176  },
177  
178  onBlur: function(event) {
179    // needed to make click events working
180    setTimeout(this.hide.bind(this), 250);
181    this.hasFocus = false;
182    this.active = false;     
183  }, 
184  
185  render: function() {
186    if(this.entryCount > 0) {
187      for (var i = 0; i < this.entryCount; i++)
188        this.index==i ? 
189          Element.addClassName(this.getEntry(i),"selected") : 
190          Element.removeClassName(this.getEntry(i),"selected");
191        
192      if(this.hasFocus) { 
193        this.show();
194        this.active = true;
195      }
196    } else {
197      this.active = false;
198      this.hide();
199    }
200  },
201  
202  markPrevious: function() {
203    if(this.index > 0) this.index--
204      else this.index = this.entryCount-1;
205  },
206  
207  markNext: function() {
208    if(this.index < this.entryCount-1) this.index++
209      else this.index = 0;
210  },
211  
212  getEntry: function(index) {
213    return this.update.firstChild.childNodes[index];
214  },
215  
216  getCurrentEntry: function() {
217    return this.getEntry(this.index);
218  },
219  
220  selectEntry: function() {
221    this.active = false;
222    this.updateElement(this.getCurrentEntry());
223  },
224
225  updateElement: function(selectedElement) {
226    if (this.options.updateElement) {
227      this.options.updateElement(selectedElement);
228      return;
229    }
230    var value = '';
231    if (this.options.select) {
232      var nodes = document.getElementsByClassName(this.options.select, selectedElement) || [];
233      if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
234    } else
235      value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
236    
237    var lastTokenPos = this.findLastToken();
238    if (lastTokenPos != -1) {
239      var newValue = this.element.value.substr(0, lastTokenPos + 1);
240      var whitespace = this.element.value.substr(lastTokenPos + 1).match(/^\s+/);
241      if (whitespace)
242        newValue += whitespace[0];
243      this.element.value = newValue + value;
244    } else {
245      this.element.value = value;
246    }
247    this.element.focus();
248    
249    if (this.options.afterUpdateElement)
250      this.options.afterUpdateElement(this.element, selectedElement);
251  },
252
253  updateChoices: function(choices) {
254    if(!this.changed && this.hasFocus) {
255      this.update.innerHTML = choices;
256      Element.cleanWhitespace(this.update);
257      Element.cleanWhitespace(this.update.firstChild);
258
259      if(this.update.firstChild && this.update.firstChild.childNodes) {
260        this.entryCount = 
261          this.update.firstChild.childNodes.length;
262        for (var i = 0; i < this.entryCount; i++) {
263          var entry = this.getEntry(i);
264          entry.autocompleteIndex = i;
265          this.addObservers(entry);
266        }
267      } else { 
268        this.entryCount = 0;
269      }
270
271      this.stopIndicator();
272
273      this.index = 0;
274      this.render();
275    }
276  },
277
278  addObservers: function(element) {
279    Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
280    Event.observe(element, "click", this.onClick.bindAsEventListener(this));
281  },
282
283  onObserverEvent: function() {
284    this.changed = false;   
285    if(this.getToken().length>=this.options.minChars) {
286      this.startIndicator();
287      this.getUpdatedChoices();
288    } else {
289      this.active = false;
290      this.hide();
291    }
292  },
293
294  getToken: function() {
295    var tokenPos = this.findLastToken();
296    if (tokenPos != -1)
297      var ret = this.element.value.substr(tokenPos + 1).replace(/^\s+/,'').replace(/\s+$/,'');
298    else
299      var ret = this.element.value;
300
301    return /\n/.test(ret) ? '' : ret;
302  },
303
304  findLastToken: function() {
305    var lastTokenPos = -1;
306
307    for (var i=0; i<this.options.tokens.length; i++) {
308      var thisTokenPos = this.element.value.lastIndexOf(this.options.tokens[i]);
309      if (thisTokenPos > lastTokenPos)
310        lastTokenPos = thisTokenPos;
311    }
312    return lastTokenPos;
313  }
314}
315
316Ajax.Autocompleter = Class.create();
317Object.extend(Object.extend(Ajax.Autocompleter.prototype, Autocompleter.Base.prototype), {
318  initialize: function(element, update, url, options) {
319    this.baseInitialize(element, update, options);
320    this.options.asynchronous  = true;
321    this.options.onComplete    = this.onComplete.bind(this);
322    this.options.defaultParams = this.options.parameters || null;
323    this.url                   = url;
324  },
325
326  getUpdatedChoices: function() {
327    entry = encodeURIComponent(this.options.paramName) + '=' + 
328      encodeURIComponent(this.getToken());
329
330    this.options.parameters = this.options.callback ?
331      this.options.callback(this.element, entry) : entry;
332
333    if(this.options.defaultParams) 
334      this.options.parameters += '&' + this.options.defaultParams;
335
336    new Ajax.Request(this.url, this.options);
337  },
338
339  onComplete: function(request) {
340    this.updateChoices(request.responseText);
341  }
342
343});
344
345// The local array autocompleter. Used when you'd prefer to
346// inject an array of autocompletion options into the page, rather
347// than sending out Ajax queries, which can be quite slow sometimes.
348//
349// The constructor takes four parameters. The first two are, as usual,
350// the id of the monitored textbox, and id of the autocompletion menu.
351// The third is the array you want to autocomplete from, and the fourth
352// is the options block.
353//
354// Extra local autocompletion options:
355// - choices - How many autocompletion choices to offer
356//
357// - partialSearch - If false, the autocompleter will match entered
358//                    text only at the beginning of strings in the 
359//                    autocomplete array. Defaults to true, which will
360//                    match text at the beginning of any *word* in the
361//                    strings in the autocomplete array. If you want to
362//                    search anywhere in the string, additionally set
363//                    the option fullSearch to true (default: off).
364//
365// - fullSsearch - Search anywhere in autocomplete array strings.
366//
367// - partialChars - How many characters to enter before triggering
368//                   a partial match (unlike minChars, which defines
369//                   how many characters are required to do any match
370//                   at all). Defaults to 2.
371//
372// - ignoreCase - Whether to ignore case when autocompleting.
373//                 Defaults to true.
374//
375// It's possible to pass in a custom function as the 'selector' 
376// option, if you prefer to write your own autocompletion logic.
377// In that case, the other options above will not apply unless
378// you support them.
379
380Autocompleter.Local = Class.create();
381Autocompleter.Local.prototype = Object.extend(new Autocompleter.Base(), {
382  initialize: function(element, update, array, options) {
383    this.baseInitialize(element, update, options);
384    this.options.array = array;
385  },
386
387  getUpdatedChoices: function() {
388    this.updateChoices(this.options.selector(this));
389  },
390
391  setOptions: function(options) {
392    this.options = Object.extend({
393      choices: 10,
394      partialSearch: true,
395      partialChars: 2,
396      ignoreCase: true,
397      fullSearch: false,
398      selector: function(instance) {
399        var ret       = []; // Beginning matches
400        var partial   = []; // Inside matches
401        var entry     = instance.getToken();
402        var count     = 0;
403
404        for (var i = 0; i < instance.options.array.length &&  
405          ret.length < instance.options.choices ; i++) { 
406
407          var elem = instance.options.array[i];
408          var foundPos = instance.options.ignoreCase ? 
409            elem.toLowerCase().indexOf(entry.toLowerCase()) : 
410            elem.indexOf(entry);
411
412          while (foundPos != -1) {
413            if (foundPos == 0 && elem.length != entry.length) { 
414              ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" + 
415                elem.substr(entry.length) + "</li>");
416              break;
417            } else if (entry.length >= instance.options.partialChars && 
418              instance.options.partialSearch && foundPos != -1) {
419              if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
420                partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
421                  elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
422                  foundPos + entry.length) + "</li>");
423                break;
424              }
425            }
426
427            foundPos = instance.options.ignoreCase ? 
428              elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) : 
429              elem.indexOf(entry, foundPos + 1);
430
431          }
432        }
433        if (partial.length)
434          ret = ret.concat(partial.slice(0, instance.options.choices - ret.length))
435        return "<ul>" + ret.join('') + "</ul>";
436      }
437    }, options || {});
438  }
439});
440
441// AJAX in-place editor
442//
443// see documentation on http://wiki.script.aculo.us/scriptaculous/show/Ajax.InPlaceEditor
444
445// Use this if you notice weird scrolling problems on some browsers,
446// the DOM might be a bit confused when this gets called so do this
447// waits 1 ms (with setTimeout) until it does the activation
448Field.scrollFreeActivate = function(field) {
449  setTimeout(function() {
450    Field.activate(field);
451  }, 1);
452}
453
454Ajax.InPlaceEditor = Class.create();
455Ajax.InPlaceEditor.defaultHighlightColor = "#FFFF99";
456Ajax.InPlaceEditor.prototype = {
457  initialize: function(element, url, options) {
458    this.url = url;
459    this.element = $(element);
460
461    this.options = Object.extend({
462      okButton: true,
463      okText: "ok",
464      cancelLink: true,
465      cancelText: "cancel",
466      savingText: "Saving...",
467      clickToEditText: "Click to edit",
468      okText: "ok",
469      rows: 1,
470      onComplete: function(transport, element) {
471        new Effect.Highlight(element, {startcolor: this.options.highlightcolor});
472      },
473      onFailure: function(transport) {
474        alert("Error communicating with the server: " + transport.responseText.stripTags());
475      },
476      callback: function(form) {
477        return Form.serialize(form);
478      },
479      handleLineBreaks: true,
480      loadingText: 'Loading...',
481      savingClassName: 'inplaceeditor-saving',
482      loadingClassName: 'inplaceeditor-loading',
483      formClassName: 'inplaceeditor-form',
484      highlightcolor: Ajax.InPlaceEditor.defaultHighlightColor,
485      highlightendcolor: "#FFFFFF",
486      externalControl: null,
487      submitOnBlur: false,
488      ajaxOptions: {},
489      evalScripts: false
490    }, options || {});
491
492    if(!this.options.formId && this.element.id) {
493      this.options.formId = this.element.id + "-inplaceeditor";
494      if ($(this.options.formId)) {
495        // there's already a form with that name, don't specify an id
496        this.options.formId = null;
497      }
498    }
499    
500    if (this.options.externalControl) {
501      this.options.externalControl = $(this.options.externalControl);
502    }
503    
504    this.originalBackground = Element.getStyle(this.element, 'background-color');
505    if (!this.originalBackground) {
506      this.originalBackground = "transparent";
507    }
508    
509    this.element.title = this.options.clickToEditText;
510    
511    this.onclickListener = this.enterEditMode.bindAsEventListener(this);
512    this.mouseoverListener = this.enterHover.bindAsEventListener(this);
513    this.mouseoutListener = this.leaveHover.bindAsEventListener(this);
514    Event.observe(this.element, 'click', this.onclickListener);
515    Event.observe(this.element, 'mouseover', this.mouseoverListener);
516    Event.observe(this.element, 'mouseout', this.mouseoutListener);
517    if (this.options.externalControl) {
518      Event.observe(this.options.externalControl, 'click', this.onclickListener);
519      Event.observe(this.options.externalControl, 'mouseover', this.mouseoverListener);
520      Event.observe(this.options.externalControl, 'mouseout', this.mouseoutListener);
521    }
522  },
523  enterEditMode: function(evt) {
524    if (this.saving) return;
525    if (this.editing) return;
526    this.editing = true;
527    this.onEnterEditMode();
528    if (this.options.externalControl) {
529      Element.hide(this.options.externalControl);
530    }
531    Element.hide(this.element);
532    this.createForm();
533    this.element.parentNode.insertBefore(this.form, this.element);
534    Field.scrollFreeActivate(this.editField);
535    // stop the event to avoid a page refresh in Safari
536    if (evt) {
537      Event.stop(evt);
538    }
539    return false;
540  },
541  createForm: function() {
542    this.form = document.createElement("form");
543    this.form.id = this.options.formId;
544    Element.addClassName(this.form, this.options.formClassName)
545    this.form.onsubmit = this.onSubmit.bind(this);
546
547    this.createEditField();
548
549    if (this.options.textarea) {
550      var br = document.createElement("br");
551      this.form.appendChild(br);
552    }
553
554    if (this.options.okButton) {
555      okButton = document.createElement("input");
556      okButton.type = "submit";
557      okButton.value = this.options.okText;
558      okButton.className = 'editor_ok_button';
559      this.form.appendChild(okButton);
560    }
561
562    if (this.options.cancelLink) {
563      cancelLink = document.createElement("a");
564      cancelLink.href = "#";
565      cancelLink.appendChild(document.createTextNode(this.options.cancelText));
566      cancelLink.onclick = this.onclickCancel.bind(this);
567      cancelLink.className = 'editor_cancel';      
568      this.form.appendChild(cancelLink);
569    }
570  },
571  hasHTMLLineBreaks: function(string) {
572    if (!this.options.handleLineBreaks) return false;
573    return string.match(/<br/i) || string.match(/<p>/i);
574  },
575  convertHTMLLineBreaks: function(string) {
576    return string.replace(/<br>/gi, "\n").replace(/<br\/>/gi, "\n").replace(/<\/p>/gi, "\n").replace(/<p>/gi, "");
577  },
578  createEditField: function() {
579    var text;
580    if(this.options.loadTextURL) {
581      text = this.options.loadingText;
582    } else {
583      text = this.getText();
584    }
585
586    var obj = this;
587    
588    if (this.options.rows == 1 && !this.hasHTMLLineBreaks(text)) {
589      this.options.textarea = false;
590      var textField = document.createElement("input");
591      textField.obj = this;
592      textField.type = "text";
593      textField.name = "value";
594      textField.value = text;
595      textField.style.backgroundColor = this.options.highlightcolor;
596      textField.className = 'editor_field';
597      var size = this.options.size || this.options.cols || 0;
598      if (size != 0) textField.size = size;
599      if (this.options.submitOnBlur)
600        textField.onblur = this.onSubmit.bind(this);
601      this.editField = textField;
602    } else {
603      this.options.textarea = true;
604      var textArea = document.createElement("textarea");
605      textArea.obj = this;
606      textArea.name = "value";
607      textArea.value = this.convertHTMLLineBreaks(text);
608      textArea.rows = this.options.rows;
609      textArea.cols = this.options.cols || 40;
610      textArea.className = 'editor_field';      
611      if (this.options.submitOnBlur)
612        textArea.onblur = this.onSubmit.bind(this);
613      this.editField = textArea;
614    }
615    
616    if(this.options.loadTextURL) {
617      this.loadExternalText();
618    }
619    this.form.appendChild(this.editField);
620  },
621  getText: function() {
622    return this.element.innerHTML;
623  },
624  loadExternalText: function() {
625    Element.addClassName(this.form, this.options.loadingClassName);
626    this.editField.disabled = true;
627    new Ajax.Request(
628      this.options.loadTextURL,
629      Object.extend({
630        asynchronous: true,
631        onComplete: this.onLoadedExternalText.bind(this)
632      }, this.options.ajaxOptions)
633    );
634  },
635  onLoadedExternalText: function(transport) {
636    Element.removeClassName(this.form, this.options.loadingClassName);
637    this.editField.disabled = false;
638    this.editField.value = transport.responseText.stripTags();
639  },
640  onclickCancel: function() {
641    this.onComplete();
642    this.leaveEditMode();
643    return false;
644  },
645  onFailure: function(transport) {
646    this.options.onFailure(transport);
647    if (this.oldInnerHTML) {
648      this.element.innerHTML = this.oldInnerHTML;
649      this.oldInnerHTML = null;
650    }
651    return false;
652  },
653  onSubmit: function() {
654    // onLoading resets these so we need to save them away for the Ajax call
655    var form = this.form;
656    var value = this.editField.value;
657    
658    // do this first, sometimes the ajax call returns before we get a chance to switch on Saving...
659    // which means this will actually switch on Saving... *after* we've left edit mode causing Saving...
660    // to be displayed indefinitely
661    this.onLoading();
662    
663    if (this.options.evalScripts) {
664      new Ajax.Request(
665        this.url, Object.extend({
666          parameters: this.options.callback(form, value),
667          onComplete: this.onComplete.bind(this),
668          onFailure: this.onFailure.bind(this),
669          asynchronous:true, 
670          evalScripts:true
671        }, this.options.ajaxOptions));
672    } else  {
673      new Ajax.Updater(
674        { success: this.element,
675          // don't update on failure (this could be an option)
676          failure: null }, 
677        this.url, Object.extend({
678          parameters: this.options.callback(form, value),
679          onComplete: this.onComplete.bind(this),
680          onFailure: this.onFailure.bind(this)
681        }, this.options.ajaxOptions));
682    }
683    // stop the event to avoid a page refresh in Safari
684    if (arguments.length > 1) {
685      Event.stop(arguments[0]);
686    }
687    return false;
688  },
689  onLoading: function() {
690    this.saving = true;
691    this.removeForm();
692    this.leaveHover();
693    this.showSaving();
694  },
695  showSaving: function() {
696    this.oldInnerHTML = this.element.innerHTML;
697    this.element.innerHTML = this.options.savingText;
698    Element.addClassName(this.element, this.options.savingClassName);
699    this.element.style.backgroundColor = this.originalBackground;
700    Element.show(this.element);
701  },
702  removeForm: function() {
703    if(this.form) {
704      if (this.form.parentNode) Element.remove(this.form);
705      this.form = null;
706    }
707  },
708  enterHover: function() {
709    if (this.saving) return;
710    this.element.style.backgroundColor = this.options.highlightcolor;
711    if (this.effect) {
712      this.effect.cancel();
713    }
714    Element.addClassName(this.element, this.options.hoverClassName)
715  },
716  leaveHover: function() {
717    if (this.options.backgroundColor) {
718      this.element.style.backgroundColor = this.oldBackground;
719    }
720    Element.removeClassName(this.element, this.options.hoverClassName)
721    if (this.saving) return;
722    this.effect = new Effect.Highlight(this.element, {
723      startcolor: this.options.highlightcolor,
724      endcolor: this.options.highlightendcolor,
725      restorecolor: this.originalBackground
726    });
727  },
728  leaveEditMode: function() {
729    Element.removeClassName(this.element, this.options.savingClassName);
730    this.removeForm();
731    this.leaveHover();
732    this.element.style.backgroundColor = this.originalBackground;
733    Element.show(this.element);
734    if (this.options.externalControl) {
735      Element.show(this.options.externalControl);
736    }
737    this.editing = false;
738    this.saving = false;
739    this.oldInnerHTML = null;
740    this.onLeaveEditMode();
741  },
742  onComplete: function(transport) {
743    this.leaveEditMode();
744    this.options.onComplete.bind(this)(transport, this.element);
745  },
746  onEnterEditMode: function() {},
747  onLeaveEditMode: function() {},
748  dispose: function() {
749    if (this.oldInnerHTML) {
750      this.element.innerHTML = this.oldInnerHTML;
751    }
752    this.leaveEditMode();
753    Event.stopObserving(this.element, 'click', this.onclickListener);
754    Event.stopObserving(this.element, 'mouseover', this.mouseoverListener);
755    Event.stopObserving(this.element, 'mouseout', this.mouseoutListener);
756    if (this.options.externalControl) {
757      Event.stopObserving(this.options.externalControl, 'click', this.onclickListener);
758      Event.stopObserving(this.options.externalControl, 'mouseover', this.mouseoverListener);
759      Event.stopObserving(this.options.externalControl, 'mouseout', this.mouseoutListener);
760    }
761  }
762};
763
764Ajax.InPlaceCollectionEditor = Class.create();
765Object.extend(Ajax.InPlaceCollectionEditor.prototype, Ajax.InPlaceEditor.prototype);
766Object.extend(Ajax.InPlaceCollectionEditor.prototype, {
767  createEditField: function() {
768    if (!this.cached_selectTag) {
769      var selectTag = document.createElement("select");
770      var collection = this.options.collection || [];
771      var optionTag;
772      collection.each(function(e,i) {
773        optionTag = document.createElement("option");
774        optionTag.value = (e instanceof Array) ? e[0] : e;
775        if(this.options.value==optionTag.value) optionTag.selected = true;
776        optionTag.appendChild(document.createTextNode((e instanceof Array) ? e[1] : e));
777        selectTag.appendChild(optionTag);
778      }.bind(this));
779      this.cached_selectTag = selectTag;
780    }
781
782    this.editField = this.cached_selectTag;
783    if(this.options.loadTextURL) this.loadExternalText();
784    this.form.appendChild(this.editField);
785    this.options.callback = function(form, value) {
786      return "value=" + encodeURIComponent(value);
787    }
788  }
789});
790
791// Delayed observer, like Form.Element.Observer, 
792// but waits for delay after last key input
793// Ideal for live-search fields
794
795Form.Element.DelayedObserver = Class.create();
796Form.Element.DelayedObserver.prototype = {
797  initialize: function(element, delay, callback) {
798    this.delay     = delay || 0.5;
799    this.element   = $(element);
800    this.callback  = callback;
801    this.timer     = null;
802    this.lastValue = $F(this.element); 
803    Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
804  },
805  delayedListener: function(event) {
806    if(this.lastValue == $F(this.element)) return;
807    if(this.timer) clearTimeout(this.timer);
808    this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
809    this.lastValue = $F(this.element);
810  },
811  onTimerEvent: function() {
812    this.timer = null;
813    this.callback(this.element, $F(this.element));
814  }
815};