mirror of
https://github.com/salesagility/SuiteCRM.git
synced 2024-11-22 16:02:36 +00:00
282 lines
8.1 KiB
JavaScript
Executable File
282 lines
8.1 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 Event 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 event-delegate
|
|
* @title Event Utility Event Delegation Module
|
|
* @namespace YAHOO.util
|
|
* @requires event
|
|
*/
|
|
|
|
(function () {
|
|
|
|
var Event = YAHOO.util.Event,
|
|
Lang = YAHOO.lang,
|
|
delegates = [],
|
|
|
|
|
|
getMatch = function(el, selector, container) {
|
|
|
|
var returnVal;
|
|
|
|
if (!el || el === container) {
|
|
returnVal = false;
|
|
}
|
|
else {
|
|
returnVal = YAHOO.util.Selector.test(el, selector) ? el: getMatch(el.parentNode, selector, container);
|
|
}
|
|
|
|
return returnVal;
|
|
|
|
};
|
|
|
|
|
|
Lang.augmentObject(Event, {
|
|
|
|
/**
|
|
* Creates a delegate function used to call event listeners specified
|
|
* via the <code>YAHOO.util.Event.delegate</code> method.
|
|
*
|
|
* @method _createDelegate
|
|
*
|
|
* @param {Function} fn The method (event listener) to call.
|
|
* @param {Function|string} filter Function or CSS selector used to
|
|
* determine for what element(s) the event listener should be called.
|
|
* @param {Object} obj An arbitrary object that will be
|
|
* passed as a parameter to the listener.
|
|
* @param {Boolean|object} overrideContext If true, the value of the
|
|
* obj parameter becomes the execution context
|
|
* of the listener. If an object, this object
|
|
* becomes the execution context.
|
|
* @return {Function} Function that will call the event listener
|
|
* specified by the <code>YAHOO.util.Event.delegate</code> method.
|
|
* @private
|
|
* @for Event
|
|
* @static
|
|
*/
|
|
_createDelegate: function (fn, filter, obj, overrideContext) {
|
|
|
|
return function (event) {
|
|
|
|
var container = this,
|
|
target = Event.getTarget(event),
|
|
selector = filter,
|
|
|
|
// The user might have specified the document object
|
|
// as the delegation container, in which case it is not
|
|
// nessary to scope the provided CSS selector(s) to the
|
|
// delegation container
|
|
bDocument = (container.nodeType === 9),
|
|
|
|
matchedEl,
|
|
context,
|
|
sID,
|
|
sIDSelector;
|
|
|
|
|
|
if (Lang.isFunction(filter)) {
|
|
matchedEl = filter(target);
|
|
}
|
|
else if (Lang.isString(filter)) {
|
|
|
|
if (!bDocument) {
|
|
|
|
sID = container.id;
|
|
|
|
if (!sID) {
|
|
sID = Event.generateId(container);
|
|
}
|
|
|
|
// Scope all selectors to the container
|
|
sIDSelector = ("#" + sID + " ");
|
|
selector = (sIDSelector + filter).replace(/,/gi, ("," + sIDSelector));
|
|
|
|
}
|
|
|
|
|
|
if (YAHOO.util.Selector.test(target, selector)) {
|
|
matchedEl = target;
|
|
}
|
|
else if (YAHOO.util.Selector.test(target, ((selector.replace(/,/gi, " *,")) + " *"))) {
|
|
|
|
// The target is a descendant of an element matching
|
|
// the selector, so crawl up to find the ancestor that
|
|
// matches the selector
|
|
|
|
matchedEl = getMatch(target, selector, container);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
if (matchedEl) {
|
|
|
|
// The default context for delegated listeners is the
|
|
// element that matched the filter.
|
|
|
|
context = matchedEl;
|
|
|
|
if (overrideContext) {
|
|
if (overrideContext === true) {
|
|
context = obj;
|
|
} else {
|
|
context = overrideContext;
|
|
}
|
|
}
|
|
|
|
// Call the listener passing in the container and the
|
|
// element that matched the filter in case the user
|
|
// needs those.
|
|
|
|
return fn.call(context, event, matchedEl, container, obj);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
},
|
|
|
|
|
|
/**
|
|
* Appends a delegated event listener. Delegated event listeners
|
|
* receive three arguments by default: the DOM event, the element
|
|
* specified by the filtering function or CSS selector, and the
|
|
* container element (the element to which the event listener is
|
|
* bound). (Note: Using the delegate method requires the event-delegate
|
|
* module. Using CSS selectors as the filtering criteria for delegated
|
|
* event listeners requires inclusion of the Selector Utility.)
|
|
*
|
|
* @method delegate
|
|
*
|
|
* @param {String|HTMLElement|Array|NodeList} container An id, an element
|
|
* reference, or a collection of ids and/or elements to assign the
|
|
* listener to.
|
|
* @param {String} type The type of event listener to append
|
|
* @param {Function} fn The method the event invokes
|
|
* @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 {Object} obj An arbitrary object that will be
|
|
* passed as a parameter to the listener
|
|
* @param {Boolean|object} overrideContext If true, the value of the obj parameter becomes
|
|
* the execution context of the listener. If an
|
|
* object, this object becomes the execution
|
|
* context.
|
|
* @return {Boolean} Returns true if the action was successful or defered,
|
|
* false if one or more of the elements
|
|
* could not have the listener attached,
|
|
* or if the operation throws an exception.
|
|
* @static
|
|
* @for Event
|
|
*/
|
|
delegate: function (container, type, fn, filter, obj, overrideContext) {
|
|
|
|
var sType = type,
|
|
fnMouseDelegate,
|
|
fnDelegate;
|
|
|
|
|
|
if (Lang.isString(filter) && !YAHOO.util.Selector) {
|
|
return false;
|
|
}
|
|
|
|
|
|
if (type == "mouseenter" || type == "mouseleave") {
|
|
|
|
if (!Event._createMouseDelegate) {
|
|
return false;
|
|
}
|
|
|
|
// Look up the real event--either mouseover or mouseout
|
|
sType = Event._getType(type);
|
|
|
|
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([container, sType, fn, fnDelegate]);
|
|
|
|
return Event.on(container, sType, fnDelegate);
|
|
|
|
},
|
|
|
|
|
|
/**
|
|
* Removes a delegated event listener.
|
|
*
|
|
* @method removeDelegate
|
|
*
|
|
* @param {String|HTMLElement|Array|NodeList} container An id, an element
|
|
* reference, or a collection of ids and/or elements to remove
|
|
* the listener from.
|
|
* @param {String} type The type of event to remove.
|
|
* @param {Function} fn The method the event invokes. If fn is
|
|
* undefined, then all event listeners for the type of event are
|
|
* removed.
|
|
* @return {boolean} Returns true if the unbind was successful, false
|
|
* otherwise.
|
|
* @static
|
|
* @for Event
|
|
*/
|
|
removeDelegate: function (container, type, fn) {
|
|
|
|
var sType = type,
|
|
returnVal = false,
|
|
index,
|
|
cacheItem;
|
|
|
|
// Look up the real event--either mouseover or mouseout
|
|
if (type == "mouseenter" || type == "mouseleave") {
|
|
sType = Event._getType(type);
|
|
}
|
|
|
|
index = Event._getCacheIndex(delegates, container, sType, fn);
|
|
|
|
if (index >= 0) {
|
|
cacheItem = delegates[index];
|
|
}
|
|
|
|
|
|
if (container && cacheItem) {
|
|
|
|
returnVal = Event.removeListener(cacheItem[0], cacheItem[1], cacheItem[3]);
|
|
|
|
if (returnVal) {
|
|
delete delegates[index][2];
|
|
delete delegates[index][3];
|
|
delegates.splice(index, 1);
|
|
}
|
|
|
|
}
|
|
|
|
return returnVal;
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}());
|
|
YAHOO.register("event-delegate", YAHOO.util.Event, {version: "2.9.1", build: "2800"});
|