mirror of
https://github.com/salesagility/SuiteCRM.git
synced 2024-11-22 16:02:36 +00:00
139 lines
3.8 KiB
JavaScript
Executable File
139 lines
3.8 KiB
JavaScript
Executable File
/*
|
|
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
|
|
Code licensed under the BSD License:
|
|
http://developer.yahoo.com/yui/license.html
|
|
version: 2.9.1
|
|
*/
|
|
/**
|
|
* Augments the Element Utility with a <code>delegate</code> method that
|
|
* facilitates easy creation of delegated event listeners. (Note: Using CSS
|
|
* selectors as the filtering criteria for delegated event listeners requires
|
|
* inclusion of the Selector Utility.)
|
|
*
|
|
* @module element-delegate
|
|
* @title Element Event Delegation Module
|
|
* @namespace YAHOO.util
|
|
* @requires element, event-delegate
|
|
*/
|
|
|
|
(function () {
|
|
|
|
var Event = YAHOO.util.Event,
|
|
delegates = [],
|
|
specialTypes = {
|
|
mouseenter: true,
|
|
mouseleave: true
|
|
};
|
|
|
|
YAHOO.lang.augmentObject(YAHOO.util.Element.prototype, {
|
|
|
|
/**
|
|
* Appends a delegated event listener. Delegated event listeners
|
|
* receive two arguments by default: the DOM event and the element
|
|
* specified by the filtering function or CSS selector.
|
|
* (Note: Using the delegate method requires the element-delegate
|
|
* module. Using CSS selectors as the filtering criteria for delegated
|
|
* event listeners requires inclusion of the Selector Utility.)
|
|
* @method delegate
|
|
* @param {String} type The name of the event to listen for
|
|
* @param {Function} fn The handler to call when the event fires
|
|
* @param {Function|string} filter Function or CSS selector used to
|
|
* determine for what element(s) the event listener should be called.
|
|
* When a function is specified, the function should return an
|
|
* HTML element. Using a CSS Selector requires the inclusion of the
|
|
* CSS Selector Utility.
|
|
* @param {Any} obj A variable to pass to the handler
|
|
* @param {Object} scope The object to use for the scope of the handler
|
|
* @return {boolean} Returns true if the delegated event listener
|
|
* was added successfully
|
|
* @for Element
|
|
*/
|
|
delegate: function (type, fn, filter, obj, overrideContext) {
|
|
|
|
if (YAHOO.lang.isString(filter) && !YAHOO.util.Selector) {
|
|
return false;
|
|
}
|
|
|
|
if (!Event._createDelegate) {
|
|
return false;
|
|
}
|
|
|
|
var sType = Event._getType(type),
|
|
el = this.get("element"),
|
|
fnDelegate,
|
|
fnMouseDelegate,
|
|
|
|
fnWrapper = function (e) {
|
|
|
|
return fnDelegate.call(el, e);
|
|
|
|
};
|
|
|
|
if (specialTypes[type]) {
|
|
|
|
if (!Event._createMouseDelegate) {
|
|
return false;
|
|
}
|
|
|
|
fnMouseDelegate = Event._createMouseDelegate(fn, obj, overrideContext);
|
|
|
|
fnDelegate = Event._createDelegate(function (event, matchedEl, container) {
|
|
|
|
return fnMouseDelegate.call(matchedEl, event, container);
|
|
|
|
}, filter, obj, overrideContext);
|
|
|
|
}
|
|
else {
|
|
fnDelegate = Event._createDelegate(fn, filter, obj, overrideContext);
|
|
}
|
|
|
|
|
|
delegates.push([el, sType, fn, fnWrapper]);
|
|
|
|
return this.on(sType, fnWrapper);
|
|
|
|
},
|
|
|
|
|
|
/**
|
|
* Remove a delegated event listener
|
|
* @method removeDelegate
|
|
* @param {String} type The name of the event to listen for
|
|
* @param {Function} fn The function call when the event fires
|
|
* @return {boolean} Returns true if the unbind was successful, false
|
|
* otherwise.
|
|
* @for Element
|
|
*/
|
|
removeDelegate: function (type, fn) {
|
|
|
|
var sType = Event._getType(type),
|
|
index = Event._getCacheIndex(delegates, this.get("element"), sType, fn),
|
|
returnVal,
|
|
cacheItem;
|
|
|
|
if (index >= 0) {
|
|
cacheItem = delegates[index];
|
|
}
|
|
|
|
if (cacheItem) {
|
|
|
|
returnVal = this.removeListener(cacheItem[1], cacheItem[3]);
|
|
|
|
if (returnVal) {
|
|
delete delegates[index][2];
|
|
delete delegates[index][3];
|
|
delegates.splice(index, 1);
|
|
}
|
|
|
|
}
|
|
|
|
return returnVal;
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}());
|
|
YAHOO.register("element-delegate", YAHOO.util.Element, {version: "2.9.1", build: "2800"});
|