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root/public/javascripts/controls.js @ 402c7e4f

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// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
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// (c) 2005-2008 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
// (c) 2005-2008 Jon Tirsen (http://www.tirsen.com)
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// Contributors:
// Richard Livsey
// Rahul Bhargava
// Rob Wills
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//
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// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

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// Autocompleter.Base handles all the autocompletion functionality
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// that's independent of the data source for autocompletion. This
// includes drawing the autocompletion menu, observing keyboard
// and mouse events, and similar.
//
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// Specific autocompleters need to provide, at the very least,
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// a getUpdatedChoices function that will be invoked every time
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// the text inside the monitored textbox changes. This method
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// should get the text for which to provide autocompletion by
// invoking this.getToken(), NOT by directly accessing
// this.element.value. This is to allow incremental tokenized
// autocompletion. Specific auto-completion logic (AJAX, etc)
// belongs in getUpdatedChoices.
//
// Tokenized incremental autocompletion is enabled automatically
// when an autocompleter is instantiated with the 'tokens' option
// in the options parameter, e.g.:
// new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
// will incrementally autocomplete with a comma as the token.
// Additionally, ',' in the above example can be replaced with
// a token array, e.g. { tokens: [',', '\n'] } which
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// enables autocompletion on multiple tokens. This is most
// useful when one of the tokens is \n (a newline), as it
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// allows smart autocompletion after linebreaks.

if(typeof Effect == 'undefined')
throw("controls.js requires including script.aculo.us' effects.js library");

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var Autocompleter = { };
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Autocompleter.Base = Class.create({
baseInitialize: function(element, update, options) {
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element = $(element);
this.element = element;
this.update = $(update);
this.hasFocus = false;
this.changed = false;
this.active = false;
this.index = 0;
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this.entryCount = 0;
this.oldElementValue = this.element.value;

if(this.setOptions)
this.setOptions(options);
else
this.options = options || { };

this.options.paramName = this.options.paramName || this.element.name;
this.options.tokens = this.options.tokens || [];
this.options.frequency = this.options.frequency || 0.4;
this.options.minChars = this.options.minChars || 1;
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this.options.onShow = this.options.onShow ||
function(element, update){
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if(!update.style.position || update.style.position=='absolute') {
update.style.position = 'absolute';
Position.clone(element, update, {
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setHeight: false,
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offsetTop: element.offsetHeight
});
}
Effect.Appear(update,{duration:0.15});
};
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this.options.onHide = this.options.onHide ||
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function(element, update){ new Effect.Fade(update,{duration:0.15}) };

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if(typeof(this.options.tokens) == 'string')
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this.options.tokens = new Array(this.options.tokens);
// Force carriage returns as token delimiters anyway
if (!this.options.tokens.include('\n'))
this.options.tokens.push('\n');

this.observer = null;
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this.element.setAttribute('autocomplete','off');

Element.hide(this.update);

Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this));
Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this));
},

show: function() {
if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
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if(!this.iefix &&
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(Prototype.Browser.IE) &&
(Element.getStyle(this.update, 'position')=='absolute')) {
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new Insertion.After(this.update,
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'<iframe id="' + this.update.id + '_iefix" '+
'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
this.iefix = $(this.update.id+'_iefix');
}
if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
},
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fixIEOverlapping: function() {
Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)});
this.iefix.style.zIndex = 1;
this.update.style.zIndex = 2;
Element.show(this.iefix);
},

hide: function() {
this.stopIndicator();
if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
if(this.iefix) Element.hide(this.iefix);
},

startIndicator: function() {
if(this.options.indicator) Element.show(this.options.indicator);
},

stopIndicator: function() {
if(this.options.indicator) Element.hide(this.options.indicator);
},

onKeyPress: function(event) {
if(this.active)
switch(event.keyCode) {
case Event.KEY_TAB:
case Event.KEY_RETURN:
this.selectEntry();
Event.stop(event);
case Event.KEY_ESC:
this.hide();
this.active = false;
Event.stop(event);
return;
case Event.KEY_LEFT:
case Event.KEY_RIGHT:
return;
case Event.KEY_UP:
this.markPrevious();
this.render();
Event.stop(event);
return;
case Event.KEY_DOWN:
this.markNext();
this.render();
Event.stop(event);
return;
}
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else
if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN ||
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(Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return;

this.changed = true;
this.hasFocus = true;

if(this.observer) clearTimeout(this.observer);
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this.observer =
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setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
},

activate: function() {
this.changed = false;
this.hasFocus = true;
this.getUpdatedChoices();
},

onHover: function(event) {
var element = Event.findElement(event, 'LI');
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if(this.index != element.autocompleteIndex)
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{
this.index = element.autocompleteIndex;
this.render();
}
Event.stop(event);
},
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onClick: function(event) {
var element = Event.findElement(event, 'LI');
this.index = element.autocompleteIndex;
this.selectEntry();
this.hide();
},
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onBlur: function(event) {
// needed to make click events working
setTimeout(this.hide.bind(this), 250);
this.hasFocus = false;
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this.active = false;
},

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render: function() {
if(this.entryCount > 0) {
for (var i = 0; i < this.entryCount; i++)
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this.index==i ?
Element.addClassName(this.getEntry(i),"selected") :
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Element.removeClassName(this.getEntry(i),"selected");
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if(this.hasFocus) {
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this.show();
this.active = true;
}
} else {
this.active = false;
this.hide();
}
},
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markPrevious: function() {
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if(this.index > 0) this.index--;
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else this.index = this.entryCount-1;
this.getEntry(this.index).scrollIntoView(true);
},
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markNext: function() {
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if(this.index < this.entryCount-1) this.index++;
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else this.index = 0;
this.getEntry(this.index).scrollIntoView(false);
},
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getEntry: function(index) {
return this.update.firstChild.childNodes[index];
},
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getCurrentEntry: function() {
return this.getEntry(this.index);
},
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selectEntry: function() {
this.active = false;
this.updateElement(this.getCurrentEntry());
},

updateElement: function(selectedElement) {
if (this.options.updateElement) {
this.options.updateElement(selectedElement);
return;
}
var value = '';
if (this.options.select) {
var nodes = $(selectedElement).select('.' + this.options.select) || [];
if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
} else
value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
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var bounds = this.getTokenBounds();
if (bounds[0] != -1) {
var newValue = this.element.value.substr(0, bounds[0]);
var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/);
if (whitespace)
newValue += whitespace[0];
this.element.value = newValue + value + this.element.value.substr(bounds[1]);
} else {
this.element.value = value;
}
this.oldElementValue = this.element.value;
this.element.focus();
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if (this.options.afterUpdateElement)
this.options.afterUpdateElement(this.element, selectedElement);
},

updateChoices: function(choices) {
if(!this.changed && this.hasFocus) {
this.update.innerHTML = choices;
Element.cleanWhitespace(this.update);
Element.cleanWhitespace(this.update.down());

if(this.update.firstChild && this.update.down().childNodes) {
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this.entryCount =
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this.update.down().childNodes.length;
for (var i = 0; i < this.entryCount; i++) {
var entry = this.getEntry(i);
entry.autocompleteIndex = i;
this.addObservers(entry);
}
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} else {
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this.entryCount = 0;
}

this.stopIndicator();
this.index = 0;
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if(this.entryCount==1 && this.options.autoSelect) {
this.selectEntry();
this.hide();
} else {
this.render();
}
}
},

addObservers: function(element) {
Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
Event.observe(element, "click", this.onClick.bindAsEventListener(this));
},

onObserverEvent: function() {
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this.changed = false;
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this.tokenBounds = null;
if(this.getToken().length>=this.options.minChars) {
this.getUpdatedChoices();
} else {
this.active = false;
this.hide();
}
this.oldElementValue = this.element.value;
},

getToken: function() {
var bounds = this.getTokenBounds();
return this.element.value.substring(bounds[0], bounds[1]).strip();
},

getTokenBounds: function() {
if (null != this.tokenBounds) return this.tokenBounds;
var value = this.element.value;
if (value.strip().empty()) return [-1, 0];
var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue);
var offset = (diff == this.oldElementValue.length ? 1 : 0);
var prevTokenPos = -1, nextTokenPos = value.length;
var tp;
for (var index = 0, l = this.options.tokens.length; index < l; ++index) {
tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1);
if (tp > prevTokenPos) prevTokenPos = tp;
tp = value.indexOf(this.options.tokens[index], diff + offset);
if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp;
}
return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]);
}
});

Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) {
var boundary = Math.min(newS.length, oldS.length);
for (var index = 0; index < boundary; ++index)
if (newS[index] != oldS[index])
return index;
return boundary;
};

Ajax.Autocompleter = Class.create(Autocompleter.Base, {
initialize: function(element, update, url, options) {
this.baseInitialize(element, update, options);
this.options.asynchronous = true;
this.options.onComplete = this.onComplete.bind(this);
this.options.defaultParams = this.options.parameters || null;
this.url = url;
},

getUpdatedChoices: function() {
this.startIndicator();
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var entry = encodeURIComponent(this.options.paramName) + '=' +
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encodeURIComponent(this.getToken());

this.options.parameters = this.options.callback ?
this.options.callback(this.element, entry) : entry;

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if(this.options.defaultParams)
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this.options.parameters += '&' + this.options.defaultParams;
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new Ajax.Request(this.url, this.options);
},

onComplete: function(request) {
this.updateChoices(request.responseText);
}
});

// The local array autocompleter. Used when you'd prefer to
// inject an array of autocompletion options into the page, rather
// than sending out Ajax queries, which can be quite slow sometimes.
//
// The constructor takes four parameters. The first two are, as usual,
// the id of the monitored textbox, and id of the autocompletion menu.
// The third is the array you want to autocomplete from, and the fourth
// is the options block.
//
// Extra local autocompletion options:
// - choices - How many autocompletion choices to offer
//
// - partialSearch - If false, the autocompleter will match entered
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// text only at the beginning of strings in the
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// autocomplete array. Defaults to true, which will
// match text at the beginning of any *word* in the
// strings in the autocomplete array. If you want to
// search anywhere in the string, additionally set
// the option fullSearch to true (default: off).
//
// - fullSsearch - Search anywhere in autocomplete array strings.
//
// - partialChars - How many characters to enter before triggering
// a partial match (unlike minChars, which defines
// how many characters are required to do any match
// at all). Defaults to 2.
//
// - ignoreCase - Whether to ignore case when autocompleting.
// Defaults to true.
//
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// It's possible to pass in a custom function as the 'selector'
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// option, if you prefer to write your own autocompletion logic.
// In that case, the other options above will not apply unless
// you support them.

Autocompleter.Local = Class.create(Autocompleter.Base, {
initialize: function(element, update, array, options) {
this.baseInitialize(element, update, options);
this.options.array = array;
},

getUpdatedChoices: function() {
this.updateChoices(this.options.selector(this));
},

setOptions: function(options) {
this.options = Object.extend({
choices: 10,
partialSearch: true,
partialChars: 2,
ignoreCase: true,
fullSearch: false,
selector: function(instance) {
var ret = []; // Beginning matches
var partial = []; // Inside matches
var entry = instance.getToken();
var count = 0;

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for (var i = 0; i < instance.options.array.length &&
ret.length < instance.options.choices ; i++) {
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var elem = instance.options.array[i];
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var foundPos = instance.options.ignoreCase ?
elem.toLowerCase().indexOf(entry.toLowerCase()) :
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elem.indexOf(entry);

while (foundPos != -1) {
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if (foundPos == 0 && elem.length != entry.length) {
ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" +
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elem.substr(entry.length) + "</li>");
break;
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} else if (entry.length >= instance.options.partialChars &&
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instance.options.partialSearch && foundPos != -1) {
if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
foundPos + entry.length) + "</li>");
break;
}
}

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foundPos = instance.options.ignoreCase ?
elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) :
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elem.indexOf(entry, foundPos + 1);

}
}
if (partial.length)
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ret = ret.concat(partial.slice(0, instance.options.choices - ret.length));
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return "<ul>" + ret.join('') + "</ul>";
}
}, options || { });
}
});

// AJAX in-place editor and collection editor
// Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007).

// Use this if you notice weird scrolling problems on some browsers,
// the DOM might be a bit confused when this gets called so do this
// waits 1 ms (with setTimeout) until it does the activation
Field.scrollFreeActivate = function(field) {
setTimeout(function() {
Field.activate(field);
}, 1);
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};
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Ajax.InPlaceEditor = Class.create({
initialize: function(element, url, options) {
this.url = url;
this.element = element = $(element);
this.prepareOptions();
this._controls = { };
arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!!
Object.extend(this.options, options || { });
if (!this.options.formId && this.element.id) {
this.options.formId = this.element.id + '-inplaceeditor';
if ($(this.options.formId))
this.options.formId = '';
}
if (this.options.externalControl)
this.options.externalControl = $(this.options.externalControl);
if (!this.options.externalControl)
this.options.externalControlOnly = false;
this._originalBackground = this.element.getStyle('background-color') || 'transparent';
this.element.title = this.options.clickToEditText;
this._boundCancelHandler = this.handleFormCancellation.bind(this);
this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this);
this._boundFailureHandler = this.handleAJAXFailure.bind(this);
this._boundSubmitHandler = this.handleFormSubmission.bind(this);
this._boundWrapperHandler = this.wrapUp.bind(this);
this.registerListeners();
},
checkForEscapeOrReturn: function(e) {
if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return;
if (Event.KEY_ESC == e.keyCode)
this.handleFormCancellation(e);
else if (Event.KEY_RETURN == e.keyCode)
this.handleFormSubmission(e);
},
createControl: function(mode, handler, extraClasses) {
var control = this.options[mode + 'Control'];
var text = this.options[mode + 'Text'];
if ('button' == control) {
var btn = document.createElement('input');
btn.type = 'submit';
btn.value = text;
btn.className = 'editor_' + mode + '_button';
if ('cancel' == mode)
btn.onclick = this._boundCancelHandler;
this._form.appendChild(btn);
this._controls[mode] = btn;
} else if ('link' == control) {
var link = document.createElement('a');
link.href = '#';
link.appendChild(document.createTextNode(text));
link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler;
link.className = 'editor_' + mode + '_link';
if (extraClasses)
link.className += ' ' + extraClasses;
this._form.appendChild(link);
this._controls[mode] = link;
}
},
createEditField: function() {
var text = (this.options.loadTextURL ? this.options.loadingText : this.getText());
var fld;
if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
fld = document.createElement('input');
fld.type = 'text';
var size = this.options.size || this.options.cols || 0;
if (0 < size) fld.size = size;
} else {
fld = document.createElement('textarea');
fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
fld.cols = this.options.cols || 40;
}
fld.name = this.options.paramName;
fld.value = text; // No HTML breaks conversion anymore
fld.className = 'editor_field';
if (this.options.submitOnBlur)
fld.onblur = this._boundSubmitHandler;
this._controls.editor = fld;
if (this.options.loadTextURL)
this.loadExternalText();
this._form.appendChild(this._controls.editor);
},
createForm: function() {
var ipe = this;
function addText(mode, condition) {
var text = ipe.options['text' + mode + 'Controls'];
if (!text || condition === false) return;
ipe._form.appendChild(document.createTextNode(text));
};
this._form = $(document.createElement('form'));
this._form.id = this.options.formId;
this._form.addClassName(this.options.formClassName);
this._form.onsubmit = this._boundSubmitHandler;
this.createEditField();
if ('textarea' == this._controls.editor.tagName.toLowerCase())
this._form.appendChild(document.createElement('br'));
if (this.options.onFormCustomization)
this.options.onFormCustomization(this, this._form);
addText('Before', this.options.okControl || this.options.cancelControl);
this.createControl('ok', this._boundSubmitHandler);
addText('Between', this.options.okControl && this.options.cancelControl);
this.createControl('cancel', this._boundCancelHandler, 'editor_cancel');
addText('After', this.options.okControl || this.options.cancelControl);
},
destroy: function() {
if (this._oldInnerHTML)
this.element.innerHTML = this._oldInnerHTML;
this.leaveEditMode();
this.unregisterListeners();
},
enterEditMode: function(e) {
if (this._saving || this._editing) return;
this._editing = true;
this.triggerCallback('onEnterEditMode');
if (this.options.externalControl)
this.options.externalControl.hide();
this.element.hide();
this.createForm();
this.element.parentNode.insertBefore(this._form, this.element);
if (!this.options.loadTextURL)
this.postProcessEditField();
if (e) Event.stop(e);
},
enterHover: function(e) {
if (this.options.hoverClassName)
this.element.addClassName(this.options.hoverClassName);
if (this._saving) return;
this.triggerCallback('onEnterHover');
},
getText: function() {
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return this.element.innerHTML.unescapeHTML();
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},
handleAJAXFailure: function(transport) {
this.triggerCallback('onFailure', transport);
if (this._oldInnerHTML) {
this.element.innerHTML = this._oldInnerHTML;
this._oldInnerHTML = null;
}
},
handleFormCancellation: function(e) {
this.wrapUp();
if (e) Event.stop(e);
},
handleFormSubmission: function(e) {
var form = this._form;
var value = $F(this._controls.editor);
this.prepareSubmission();
var params = this.options.callback(form, value) || '';
if (Object.isString(params))
params = params.toQueryParams();
params.editorId = this.element.id;
if (this.options.htmlResponse) {
var options = Object.extend({ evalScripts: true }, this.options.ajaxOptions);
Object.extend(options, {
parameters: params,
onComplete: this._boundWrapperHandler,
onFailure: this._boundFailureHandler
});
new Ajax.Updater({ success: this.element }, this.url, options);
} else {
var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
Object.extend(options, {
parameters: params,
onComplete: this._boundWrapperHandler,
onFailure: this._boundFailureHandler
});
new Ajax.Request(this.url, options);
}
if (e) Event.stop(e);
},
leaveEditMode: function() {
this.element.removeClassName(this.options.savingClassName);
this.removeForm();
this.leaveHover();
this.element.style.backgroundColor = this._originalBackground;
this.element.show();
if (this.options.externalControl)
this.options.externalControl.show();
this._saving = false;
this._editing = false;
this._oldInnerHTML = null;
this.triggerCallback('onLeaveEditMode');
},
leaveHover: function(e) {
if (this.options.hoverClassName)
this.element.removeClassName(this.options.hoverClassName);
if (this._saving) return;
this.triggerCallback('onLeaveHover');
},
loadExternalText: function() {
this._form.addClassName(this.options.loadingClassName);
this._controls.editor.disabled = true;
var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
Object.extend(options, {
parameters: 'editorId=' + encodeURIComponent(this.element.id),
onComplete: Prototype.emptyFunction,
onSuccess: function(transport) {
this._form.removeClassName(this.options.loadingClassName);
var text = transport.responseText;
if (this.options.stripLoadedTextTags)
text = text.stripTags();
this._controls.editor.value = text;
this._controls.editor.disabled = false;
this.postProcessEditField();
}.bind(this),
onFailure: this._boundFailureHandler
});
new Ajax.Request(this.options.loadTextURL, options);
},
postProcessEditField: function() {
var fpc = this.options.fieldPostCreation;
if (fpc)
$(this._controls.editor)['focus' == fpc ? 'focus' : 'activate']();
},
prepareOptions: function() {
this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
[this._extraDefaultOptions].flatten().compact().each(function(defs) {
Object.extend(this.options, defs);
}.bind(this));
},
prepareSubmission: function() {
this._saving = true;
this.removeForm();
this.leaveHover();
this.showSaving();
},
registerListeners: function() {
this._listeners = { };
var listener;
$H(Ajax.InPlaceEditor.Listeners).each(function(pair) {
listener = this[pair.value].bind(this);
this._listeners[pair.key] = listener;
if (!this.options.externalControlOnly)
this.element.observe(pair.key, listener);
if (this.options.externalControl)
this.options.externalControl.observe(pair.key, listener);
}.bind(this));
},
removeForm: function() {
if (!this._form) return;
this._form.remove();
this._form = null;
this._controls = { };
},
showSaving: function() {
this._oldInnerHTML = this.element.innerHTML;
this.element.innerHTML = this.options.savingText;
this.element.addClassName(this.options.savingClassName);
this.element.style.backgroundColor = this._originalBackground;
this.element.show();
},
triggerCallback: function(cbName, arg) {
if ('function' == typeof this.options[cbName]) {
this.options[cbName](this, arg);
}
},
unregisterListeners: function() {
$H(this._listeners).each(function(pair) {
if (!this.options.externalControlOnly)
this.element.stopObserving(pair.key, pair.value);
if (this.options.externalControl)
this.options.externalControl.stopObserving(pair.key, pair.value);
}.bind(this));
},
wrapUp: function(transport) {
this.leaveEditMode();
// Can't use triggerCallback due to backward compatibility: requires
// binding + direct element
this._boundComplete(transport, this.element);
}
});

Object.extend(Ajax.InPlaceEditor.prototype, {
dispose: Ajax.InPlaceEditor.prototype.destroy
});

Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
initialize: function($super, element, url, options) {
this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
$super(element, url, options);
},

createEditField: function() {
var list = document.createElement('select');
list.name = this.options.paramName;
list.size = 1;
this._controls.editor = list;
this._collection = this.options.collection || [];
if (this.options.loadCollectionURL)
this.loadCollection();
else
this.checkForExternalText();
this._form.appendChild(this._controls.editor);
},

loadCollection: function() {
this._form.addClassName(this.options.loadingClassName);
this.showLoadingText(this.options.loadingCollectionText);
var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
Object.extend(options, {
parameters: 'editorId=' + encodeURIComponent(this.element.id),
onComplete: Prototype.emptyFunction,
onSuccess: function(transport) {
var js = transport.responseText.strip();
if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check
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throw('Server returned an invalid collection representation.');
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this._collection = eval(js);
this.checkForExternalText();
}.bind(this),
onFailure: this.onFailure
});
new Ajax.Request(this.options.loadCollectionURL, options);
},

showLoadingText: function(text) {
this._controls.editor.disabled = true;
var tempOption = this._controls.editor.firstChild;
if (!tempOption) {
tempOption = document.createElement('option');
tempOption.value = '';
this._controls.editor.appendChild(tempOption);
tempOption.selected = true;
}
tempOption.update((text || '').stripScripts().stripTags());
},

checkForExternalText: function() {
this._text = this.getText();
if (this.options.loadTextURL)
this.loadExternalText();
else
this.buildOptionList();
},

loadExternalText: function() {
this.showLoadingText(this.options.loadingText);
var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
Object.extend(options, {
parameters: 'editorId=' + encodeURIComponent(this.element.id),
onComplete: Prototype.emptyFunction,
onSuccess: function(transport) {
this._text = transport.responseText.strip();
this.buildOptionList();
}.bind(this),
onFailure: this.onFailure
});
new Ajax.Request(this.options.loadTextURL, options);
},

buildOptionList: function() {
this._form.removeClassName(this.options.loadingClassName);
this._collection = this._collection.map(function(entry) {
return 2 === entry.length ? entry : [entry, entry].flatten();
});
var marker = ('value' in this.options) ? this.options.value : this._text;
var textFound = this._collection.any(function(entry) {
return entry[0] == marker;
}.bind(this));
this._controls.editor.update('');
var option;
this._collection.each(function(entry, index) {
option = document.createElement('option');
option.value = entry[0];
option.selected = textFound ? entry[0] == marker : 0 == index;
option.appendChild(document.createTextNode(entry[1]));
this._controls.editor.appendChild(option);
}.bind(this));
this._controls.editor.disabled = false;
Field.scrollFreeActivate(this._controls.editor);
}
});

//**** DEPRECATION LAYER FOR InPlace[Collection]Editor! ****
//**** This only exists for a while, in order to let ****
//**** users adapt to the new API. Read up on the new ****
//**** API and convert your code to it ASAP! ****

Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) {
if (!options) return;
function fallback(name, expr) {
if (name in options || expr === undefined) return;
options[name] = expr;
};
fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' :
options.cancelLink == options.cancelButton == false ? false : undefined)));
fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' :
options.okLink == options.okButton == false ? false : undefined)));
fallback('highlightColor', options.highlightcolor);
fallback('highlightEndColor', options.highlightendcolor);
};

Object.extend(Ajax.InPlaceEditor, {
DefaultOptions: {
ajaxOptions: { },
autoRows: 3, // Use when multi-line w/ rows == 1
cancelControl: 'link', // 'link'|'button'|false
cancelText: 'cancel',
clickToEditText: 'Click to edit',
externalControl: null, // id|elt
externalControlOnly: false,
fieldPostCreation: 'activate', // 'activate'|'focus'|false
formClassName: 'inplaceeditor-form',
formId: null, // id|elt
highlightColor: '#ffff99',
highlightEndColor: '#ffffff',
hoverClassName: '',
htmlResponse: true,
loadingClassName: 'inplaceeditor-loading',
loadingText: 'Loading...',
okControl: 'button', // 'link'|'button'|false
okText: 'ok',
paramName: 'value',
rows: 1, // If 1 and multi-line, uses autoRows
savingClassName: 'inplaceeditor-saving',
savingText: 'Saving...',
size: 0,
stripLoadedTextTags: false,
submitOnBlur: false,
textAfterControls: '',
textBeforeControls: '',
textBetweenControls: ''
},
DefaultCallbacks: {
callback: function(form) {
return Form.serialize(form);
},
onComplete: function(transport, element) {
// For backward compatibility, this one is bound to the IPE, and passes
// the element directly. It was too often customized, so we don't break it.
new Effect.Highlight(element, {
startcolor: this.options.highlightColor, keepBackgroundImage: true });
},
onEnterEditMode: null,
onEnterHover: function(ipe) {
ipe.element.style.backgroundColor = ipe.options.highlightColor;
if (ipe._effect)
ipe._effect.cancel();
},
onFailure: function(transport, ipe) {
alert('Error communication with the server: ' + transport.responseText.stripTags());
},
onFormCustomization: null, // Takes the IPE and its generated form, after editor, before controls.
onLeaveEditMode: null,
onLeaveHover: function(ipe) {
ipe._effect = new Effect.Highlight(ipe.element, {
startcolor: ipe.options.highlightColor, endcolor: ipe.options.highlightEndColor,
restorecolor: ipe._originalBackground, keepBackgroundImage: true
});
}
},
Listeners: {
click: 'enterEditMode',
keydown: 'checkForEscapeOrReturn',
mouseover: 'enterHover',
mouseout: 'leaveHover'
}
});

Ajax.InPlaceCollectionEditor.DefaultOptions = {
loadingCollectionText: 'Loading options...'
};

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// Delayed observer, like Form.Element.Observer,
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// but waits for delay after last key input
// Ideal for live-search fields

Form.Element.DelayedObserver = Class.create({
initialize: function(element, delay, callback) {
this.delay = delay || 0.5;
this.element = $(element);
this.callback = callback;
this.timer = null;
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this.lastValue = $F(this.element);
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Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
},
delayedListener: function(event) {
if(this.lastValue == $F(this.element)) return;
if(this.timer) clearTimeout(this.timer);
this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
this.lastValue = $F(this.element);
},
onTimerEvent: function() {
this.timer = null;
this.callback(this.element, $F(this.element));
}
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});