comt: comparison src/cm/media/js/lib/yui/yui3.0.0/build/event-custom/event-custom-base-debug.js

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src/cm/media/js/lib/yui/yui3.0.0/build/event-custom/event-custom-base-debug.js

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+:40c8f766c9b8
+/*
+Copyright (c) 2009, Yahoo! Inc. All rights reserved.
+Code licensed under the BSD License:
+http://developer.yahoo.net/yui/license.txt
+version: 3.0.0
+build: 1549
+*/
+YUI.add('event-custom-base', function(Y) {
+/**
+* Custom event engine, DOM event listener abstraction layer, synthetic DOM
+* events.
+* @module event-custom
+*/
+Y.Env.evt = {
+handles: {},
+plugins: {}
+};
+/**
+* Custom event engine, DOM event listener abstraction layer, synthetic DOM
+* events.
+* @module event-custom
+* @submodule event-custom-base
+*/
+(function() {
+/**
+* Allows for the insertion of methods that are executed before or after
+* a specified method
+* @class Do
+* @static
+*/
+var BEFORE = 0,
+AFTER = 1;
+Y.Do = {
+/**
+* Cache of objects touched by the utility
+* @property objs
+* @static
+*/
+objs: {},
+/**
+* Execute the supplied method before the specified function
+* @method before
+* @param fn {Function} the function to execute
+* @param obj the object hosting the method to displace
+* @param sFn {string} the name of the method to displace
+* @param c The execution context for fn
+* @return {string} handle for the subscription
+* @static
+*/
+before: function(fn, obj, sFn, c) {
+// Y.log('Do before: ' + sFn, 'info', 'event');
+var f = fn, a;
+if (c) {
+a = [fn, c].concat(Y.Array(arguments, 4, true));
+f = Y.rbind.apply(Y, a);
+}
+return this._inject(BEFORE, f, obj, sFn);
+},
+/**
+* Execute the supplied method after the specified function
+* @method after
+* @param fn {Function} the function to execute
+* @param obj the object hosting the method to displace
+* @param sFn {string} the name of the method to displace
+* @param c The execution context for fn
+* @return {string} handle for the subscription
+* @static
+*/
+after: function(fn, obj, sFn, c) {
+var f = fn, a;
+if (c) {
+a = [fn, c].concat(Y.Array(arguments, 4, true));
+f = Y.rbind.apply(Y, a);
+}
+return this._inject(AFTER, f, obj, sFn);
+},
+/**
+* Execute the supplied method after the specified function
+* @method _inject
+* @param when {string} before or after
+* @param fn {Function} the function to execute
+* @param obj the object hosting the method to displace
+* @param sFn {string} the name of the method to displace
+* @param c The execution context for fn
+* @return {string} handle for the subscription
+* @private
+* @static
+*/
+_inject: function(when, fn, obj, sFn) {
+// object id
+var id = Y.stamp(obj), o, sid;
+if (! this.objs[id]) {
+// create a map entry for the obj if it doesn't exist
+this.objs[id] = {};
+}
+o = this.objs[id];
+if (! o[sFn]) {
+// create a map entry for the method if it doesn't exist
+o[sFn] = new Y.Do.Method(obj, sFn);
+// re-route the method to our wrapper
+obj[sFn] =
+function() {
+return o[sFn].exec.apply(o[sFn], arguments);
+};
+}
+// subscriber id
+sid = id + Y.stamp(fn) + sFn;
+// register the callback
+o[sFn].register(sid, fn, when);
+return new Y.EventHandle(o[sFn], sid);
+},
+/**
+* Detach a before or after subscription
+* @method detach
+* @param handle {string} the subscription handle
+*/
+detach: function(handle) {
+if (handle.detach) {
+handle.detach();
+}
+},
+_unload: function(e, me) {
+}
+};
+//////////////////////////////////////////////////////////////////////////
+/**
+* Wrapper for a displaced method with aop enabled
+* @class Do.Method
+* @constructor
+* @param obj The object to operate on
+* @param sFn The name of the method to displace
+*/
+Y.Do.Method = function(obj, sFn) {
+this.obj = obj;
+this.methodName = sFn;
+this.method = obj[sFn];
+this.before = {};
+this.after = {};
+};
+/**
+* Register a aop subscriber
+* @method register
+* @param sid {string} the subscriber id
+* @param fn {Function} the function to execute
+* @param when {string} when to execute the function
+*/
+Y.Do.Method.prototype.register = function (sid, fn, when) {
+if (when) {
+this.after[sid] = fn;
+} else {
+this.before[sid] = fn;
+}
+};
+/**
+* Unregister a aop subscriber
+* @method delete
+* @param sid {string} the subscriber id
+* @param fn {Function} the function to execute
+* @param when {string} when to execute the function
+*/
+Y.Do.Method.prototype._delete = function (sid) {
+// Y.log('Y.Do._delete: ' + sid, 'info', 'Event');
+delete this.before[sid];
+delete this.after[sid];
+};
+/**
+* Execute the wrapped method
+* @method exec
+*/
+Y.Do.Method.prototype.exec = function () {
+var args = Y.Array(arguments, 0, true),
+i, ret, newRet,
+bf = this.before,
+af = this.after,
+prevented = false;
+// execute before
+for (i in bf) {
+if (bf.hasOwnProperty(i)) {
+ret = bf[i].apply(this.obj, args);
+if (ret) {
+switch (ret.constructor) {
+case Y.Do.Halt:
+return ret.retVal;
+case Y.Do.AlterArgs:
+args = ret.newArgs;
+break;
+case Y.Do.Prevent:
+prevented = true;
+break;
+default:
+}
+}
+}
+}
+// execute method
+if (!prevented) {
+ret = this.method.apply(this.obj, args);
+}
+// execute after methods.
+for (i in af) {
+if (af.hasOwnProperty(i)) {
+newRet = af[i].apply(this.obj, args);
+// Stop processing if a Halt object is returned
+if (newRet && newRet.constructor == Y.Do.Halt) {
+return newRet.retVal;
+// Check for a new return value
+} else if (newRet && newRet.constructor == Y.Do.AlterReturn) {
+ret = newRet.newRetVal;
+}
+}
+}
+return ret;
+};
+//////////////////////////////////////////////////////////////////////////
+/**
+* Return an AlterArgs object when you want to change the arguments that
+* were passed into the function.  An example would be a service that scrubs
+* out illegal characters prior to executing the core business logic.
+* @class Do.AlterArgs
+*/
+Y.Do.AlterArgs = function(msg, newArgs) {
+this.msg = msg;
+this.newArgs = newArgs;
+};
+/**
+* Return an AlterReturn object when you want to change the result returned
+* from the core method to the caller
+* @class Do.AlterReturn
+*/
+Y.Do.AlterReturn = function(msg, newRetVal) {
+this.msg = msg;
+this.newRetVal = newRetVal;
+};
+/**
+* Return a Halt object when you want to terminate the execution
+* of all subsequent subscribers as well as the wrapped method
+* if it has not exectued yet.
+* @class Do.Halt
+*/
+Y.Do.Halt = function(msg, retVal) {
+this.msg = msg;
+this.retVal = retVal;
+};
+/**
+* Return a Prevent object when you want to prevent the wrapped function
+* from executing, but want the remaining listeners to execute
+* @class Do.Prevent
+*/
+Y.Do.Prevent = function(msg) {
+this.msg = msg;
+};
+/**
+* Return an Error object when you want to terminate the execution
+* of all subsequent method calls.
+* @class Do.Error
+* @deprecated use Y.Do.Halt or Y.Do.Prevent
+*/
+Y.Do.Error = Y.Do.Halt;
+//////////////////////////////////////////////////////////////////////////
+// Y["Event"] && Y.Event.addListener(window, "unload", Y.Do._unload, Y.Do);
+})();
+/**
+* Custom event engine, DOM event listener abstraction layer, synthetic DOM
+* events.
+* @module event-custom
+* @submodule event-custom-base
+*/
+/**
+* Return value from all subscribe operations
+* @class EventHandle
+* @constructor
+* @param evt {CustomEvent} the custom event
+* @param sub {Subscriber} the subscriber
+*/
+// var onsubscribeType = "_event:onsub",
+var AFTER = 'after',
+CONFIGS = [
+'broadcast',
+'bubbles',
+'context',
+'contextFn',
+'currentTarget',
+'defaultFn',
+'details',
+'emitFacade',
+'fireOnce',
+'host',
+'preventable',
+'preventedFn',
+'queuable',
+'silent',
+'stoppedFn',
+'target',
+'type'
+],
+YUI3_SIGNATURE = 9,
+YUI_LOG = 'yui:log';
+Y.EventHandle = function(evt, sub) {
+/**
+* The custom event
+* @type CustomEvent
+*/
+this.evt = evt;
+/**
+* The subscriber object
+* @type Subscriber
+*/
+this.sub = sub;
+};
+Y.EventHandle.prototype = {
+/**
+* Detaches this subscriber
+* @method detach
+*/
+detach: function() {
+var evt = this.evt, i;
+if (evt) {
+// Y.log('EventHandle.detach: ' + this.sub, 'info', 'Event');
+if (Y.Lang.isArray(evt)) {
+for (i=0; i<evt.length; i++) {
+evt[i].detach();
+}
+} else {
+evt._delete(this.sub);
+}
+}
+}
+};
+/**
+* The CustomEvent class lets you define events for your application
+* that can be subscribed to by one or more independent component.
+*
+* @param {String}  type The type of event, which is passed to the callback
+*                  when the event fires
+* @param o configuration object
+* @class CustomEvent
+* @constructor
+*/
+Y.CustomEvent = function(type, o) {
+// if (arguments.length > 2) {
+// this.log('CustomEvent context and silent are now in the config', 'warn', 'Event');
+// }
+o = o || {};
+this.id = Y.stamp(this);
+/**
+* The type of event, returned to subscribers when the event fires
+* @property type
+* @type string
+*/
+this.type = type;
+/**
+* The context the the event will fire from by default.  Defaults to the YUI
+* instance.
+* @property context
+* @type object
+*/
+this.context = Y;
+this.logSystem = (type == YUI_LOG);
+/**
+* If 0, this event does not broadcast.  If 1, the YUI instance is notified
+* every time this event fires.  If 2, the YUI instance and the YUI global
+* (if event is enabled on the global) are notified every time this event
+* fires.
+* @property broadcast
+* @type int
+*/
+// this.broadcast = 0;
+/**
+* By default all custom events are logged in the debug build, set silent
+* to true to disable debug outpu for this event.
+* @property silent
+* @type boolean
+*/
+this.silent = this.logSystem;
+/**
+* Specifies whether this event should be queued when the host is actively
+* processing an event.  This will effect exectution order of the callbacks
+* for the various events.
+* @property queuable
+* @type boolean
+* @default false
+*/
+// this.queuable = false;
+/**
+* The subscribers to this event
+* @property subscribers
+* @type Subscriber{}
+*/
+this.subscribers = {};
+/**
+* 'After' subscribers
+* @property afters
+* @type Subscriber{}
+*/
+this.afters = {};
+/**
+* This event has fired if true
+*
+* @property fired
+* @type boolean
+* @default false;
+*/
+// this.fired = false;
+/**
+* An array containing the arguments the custom event
+* was last fired with.
+* @property firedWith
+* @type Array
+*/
+// this.firedWith;
+/**
+* This event should only fire one time if true, and if
+* it has fired, any new subscribers should be notified
+* immediately.
+*
+* @property fireOnce
+* @type boolean
+* @default false;
+*/
+// this.fireOnce = false;
+/**
+* Flag for stopPropagation that is modified during fire()
+* 1 means to stop propagation to bubble targets.  2 means
+* to also stop additional subscribers on this target.
+* @property stopped
+* @type int
+*/
+// this.stopped = 0;
+/**
+* Flag for preventDefault that is modified during fire().
+* if it is not 0, the default behavior for this event
+* @property prevented
+* @type int
+*/
+// this.prevented = 0;
+/**
+* Specifies the host for this custom event.  This is used
+* to enable event bubbling
+* @property host
+* @type EventTarget
+*/
+// this.host = null;
+/**
+* The default function to execute after event listeners
+* have fire, but only if the default action was not
+* prevented.
+* @property defaultFn
+* @type Function
+*/
+// this.defaultFn = null;
+/**
+* The function to execute if a subscriber calls
+* stopPropagation or stopImmediatePropagation
+* @property stoppedFn
+* @type Function
+*/
+// this.stoppedFn = null;
+/**
+* The function to execute if a subscriber calls
+* preventDefault
+* @property preventedFn
+* @type Function
+*/
+// this.preventedFn = null;
+/**
+* Specifies whether or not this event's default function
+* can be cancelled by a subscriber by executing preventDefault()
+* on the event facade
+* @property preventable
+* @type boolean
+* @default true
+*/
+this.preventable = true;
+/**
+* Specifies whether or not a subscriber can stop the event propagation
+* via stopPropagation(), stopImmediatePropagation(), or halt()
+* @property bubbles
+* @type boolean
+* @default true
+*/
+this.bubbles = true;
+/**
+* Supports multiple options for listener signatures in order to
+* port YUI 2 apps.
+* @property signature
+* @type int
+* @default 9
+*/
+this.signature = YUI3_SIGNATURE;
+// this.hasSubscribers = false;
+// this.hasAfters = false;
+/**
+* If set to true, the custom event will deliver an EventFacade object
+* that is similar to a DOM event object.
+* @property emitFacade
+* @type boolean
+* @default false
+*/
+// this.emitFacade = false;
+this.applyConfig(o, true);
+// this.log("Creating " + this.type);
+};
+Y.CustomEvent.prototype = {
+/**
+* Apply configuration properties.  Only applies the CONFIG whitelist
+* @method applyConfig
+* @param o hash of properties to apply
+* @param force {boolean} if true, properties that exist on the event
+* will be overwritten.
+*/
+applyConfig: function(o, force) {
+if (o) {
+Y.mix(this, o, force, CONFIGS);
+}
+},
+_on: function(fn, context, args, when) {
+if (!fn) {
+this.log("Invalid callback for CE: " + this.type);
+}
+var s = new Y.Subscriber(fn, context, args, when);
+if (this.fireOnce && this.fired) {
+Y.later(0, this, Y.bind(this._notify, this, s, this.firedWith));
+}
+if (when == AFTER) {
+this.afters[s.id] = s;
+this.hasAfters = true;
+} else {
+this.subscribers[s.id] = s;
+this.hasSubscribers = true;
+}
+return new Y.EventHandle(this, s);
+},
+/**
+* Listen for this event
+* @method subscribe
+* @param {Function} fn        The function to execute
+* @return {EventHandle|EventTarget} unsubscribe handle or a
+* chainable event target depending on the 'chain' config.
+* @deprecated use on
+*/
+subscribe: function(fn, context) {
+Y.log('ce.subscribe deprecated, use "on"', 'warn', 'deprecated');
+var a = (arguments.length > 2) ? Y.Array(arguments, 2, true): null;
+return this._on(fn, context, a, true);
+},
+/**
+* Listen for this event
+* @method on
+* @param {Function} fn        The function to execute
+* @return {EventHandle|EventTarget} unsubscribe handle or a
+* chainable event target depending on the 'chain' config.
+*/
+on: function(fn, context) {
+var a = (arguments.length > 2) ? Y.Array(arguments, 2, true): null;
+return this._on(fn, context, a, true);
+},
+/**
+* Listen for this event after the normal subscribers have been notified and
+* the default behavior has been applied.  If a normal subscriber prevents the
+* default behavior, it also prevents after listeners from firing.
+* @method after
+* @param {Function} fn        The function to execute
+* @return {EventHandle|EventTarget} unsubscribe handle or a
+* chainable event target depending on the 'chain' config.
+*/
+after: function(fn, context) {
+var a = (arguments.length > 2) ? Y.Array(arguments, 2, true): null;
+return this._on(fn, context, a, AFTER);
+},
+/**
+* Detach listeners.
+* @method detach
+* @param {Function} fn  The subscribed function to remove, if not supplied
+*                       all will be removed
+* @param {Object}   context The context object passed to subscribe.
+* @return {int|EventTarget} returns a chainable event target
+* or the number of subscribers unsubscribed.
+*/
+detach: function(fn, context) {
+// unsubscribe handle
+if (fn && fn.detach) {
+return fn.detach();
+}
+var found = 0, subs = this.subscribers, i, s;
+for (i in subs) {
+if (subs.hasOwnProperty(i)) {
+s = subs[i];
+if (s && (!fn || fn === s.fn)) {
+this._delete(s);
+found++;
+}
+}
+}
+return found;
+},
+/**
+* Detach listeners.
+* @method unsubscribe
+* @param {Function} fn  The subscribed function to remove, if not supplied
+*                       all will be removed
+* @param {Object}   context The context object passed to subscribe.
+* @return {boolean|EventTarget} returns a chainable event target
+* or a boolean for legacy detach support.
+* @deprecated use detach
+*/
+unsubscribe: function() {
+return this.detach.apply(this, arguments);
+},
+/**
+* Notify a single subscriber
+* @method _notify
+* @param s {Subscriber} the subscriber
+* @param args {Array} the arguments array to apply to the listener
+* @private
+*/
+_notify: function(s, args, ef) {
+this.log(this.type + "->" + "sub: " +  s.id);
+var ret;
+ret = s.notify(args, this);
+if (false === ret || this.stopped > 1) {
+this.log(this.type + " cancelled by subscriber");
+return false;
+}
+return true;
+},
+/**
+* Logger abstraction to centralize the application of the silent flag
+* @method log
+* @param msg {string} message to log
+* @param cat {string} log category
+*/
+log: function(msg, cat) {
+if (!this.silent) {
+Y.log(this.id + ': ' + msg, cat || "info", "event");
+}
+},
+/**
+* Notifies the subscribers.  The callback functions will be executed
+* from the context specified when the event was created, and with the
+* following parameters:
+*   <ul>
+*   <li>The type of event</li>
+*   <li>All of the arguments fire() was executed with as an array</li>
+*   <li>The custom object (if any) that was passed into the subscribe()
+*       method</li>
+*   </ul>
+* @method fire
+* @param {Object*} arguments an arbitrary set of parameters to pass to
+*                            the handler.
+* @return {boolean} false if one of the subscribers returned false,
+*                   true otherwise
+*
+*/
+fire: function() {
+if (this.fireOnce && this.fired) {
+this.log('fireOnce event: ' + this.type + ' already fired');
+return true;
+} else {
+var args = Y.Array(arguments, 0, true);
+this.fired = true;
+this.firedWith = args;
+if (this.emitFacade) {
+return this.fireComplex(args);
+} else {
+return this.fireSimple(args);
+}
+}
+},
+fireSimple: function(args) {
+if (this.hasSubscribers || this.hasAfters) {
+this._procSubs(Y.merge(this.subscribers, this.afters), args);
+}
+this._broadcast(args);
+return this.stopped ? false : true;
+},
+// Requires the event-custom-complex module for full funcitonality.
+fireComplex: function(args) {
+args[0] = args[0] || {};
+return this.fireSimple(args);
+},
+_procSubs: function(subs, args, ef) {
+var s, i;
+for (i in subs) {
+if (subs.hasOwnProperty(i)) {
+s = subs[i];
+if (s && s.fn) {
+if (false === this._notify(s, args, ef)) {
+this.stopped = 2;
+}
+if (this.stopped == 2) {
+return false;
+}
+}
+}
+}
+return true;
+},
+_broadcast: function(args) {
+if (!this.stopped && this.broadcast) {
+var a = Y.Array(args);
+a.unshift(this.type);
+if (this.host !== Y) {
+Y.fire.apply(Y, a);
+}
+if (this.broadcast == 2) {
+Y.Global.fire.apply(Y.Global, a);
+}
+}
+},
+/**
+* Removes all listeners
+* @method unsubscribeAll
+* @return {int} The number of listeners unsubscribed
+* @deprecated use detachAll
+*/
+unsubscribeAll: function() {
+return this.detachAll.apply(this, arguments);
+},
+/**
+* Removes all listeners
+* @method detachAll
+* @return {int} The number of listeners unsubscribed
+*/
+detachAll: function() {
+return this.detach();
+},
+/**
+* @method _delete
+* @param subscriber object
+* @private
+*/
+_delete: function(s) {
+if (s) {
+delete s.fn;
+delete s.context;
+delete this.subscribers[s.id];
+delete this.afters[s.id];
+}
+}
+};
+/////////////////////////////////////////////////////////////////////
+/**
+* Stores the subscriber information to be used when the event fires.
+* @param {Function} fn       The wrapped function to execute
+* @param {Object}   context  The value of the keyword 'this' in the listener
+* @param {Array} args*       0..n additional arguments to supply the listener
+*
+* @class Subscriber
+* @constructor
+*/
+Y.Subscriber = function(fn, context, args) {
+/**
+* The callback that will be execute when the event fires
+* This is wrapped by Y.rbind if obj was supplied.
+* @property fn
+* @type Function
+*/
+this.fn = fn;
+/**
+* Optional 'this' keyword for the listener
+* @property context
+* @type Object
+*/
+this.context = context;
+/**
+* Unique subscriber id
+* @property id
+* @type String
+*/
+this.id = Y.stamp(this);
+/**
+* Additional arguments to propagate to the subscriber
+* @property args
+* @type Array
+*/
+this.args = args;
+/**
+* Custom events for a given fire transaction.
+* @property events
+* @type {EventTarget}
+*/
+this.events = null;
+};
+Y.Subscriber.prototype = {
+_notify: function(c, args, ce) {
+var a = this.args, ret;
+switch (ce.signature) {
+case 0:
+ret = this.fn.call(c, ce.type, args, c);
+break;
+case 1:
+ret = this.fn.call(c, args[0] || null, c);
+break;
+default:
+if (a || args) {
+args = args || [];
+a = (a) ? args.concat(a) : args;
+ret = this.fn.apply(c, a);
+} else {
+ret = this.fn.call(c);
+}
+}
+return ret;
+},
+/**
+* Executes the subscriber.
+* @method notify
+* @param args {Array} Arguments array for the subscriber
+* @param ce {CustomEvent} The custom event that sent the notification
+*/
+notify: function(args, ce) {
+var c = this.context,
+ret = true;
+if (!c) {
+c = (ce.contextFn) ? ce.contextFn() : ce.context;
+}
+// only catch errors if we will not re-throw them.
+if (Y.config.throwFail) {
+ret = this._notify(c, args, ce);
+} else {
+try {
+ret = this._notify(c, args, ce);
+} catch(e) {
+Y.error(this + ' failed: ' + e.message, e);
+}
+}
+return ret;
+},
+/**
+* Returns true if the fn and obj match this objects properties.
+* Used by the unsubscribe method to match the right subscriber.
+*
+* @method contains
+* @param {Function} fn the function to execute
+* @param {Object} context optional 'this' keyword for the listener
+* @return {boolean} true if the supplied arguments match this
+*                   subscriber's signature.
+*/
+contains: function(fn, context) {
+if (context) {
+return ((this.fn == fn) && this.context == context);
+} else {
+return (this.fn == fn);
+}
+}
+};
+/**
+* Custom event engine, DOM event listener abstraction layer, synthetic DOM
+* events.
+* @module event-custom
+* @submodule event-custom-base
+*/
+(function() {
+/**
+* EventTarget provides the implementation for any object to
+* publish, subscribe and fire to custom events, and also
+* alows other EventTargets to target the object with events
+* sourced from the other object.
+* EventTarget is designed to be used with Y.augment to wrap
+* EventCustom in an interface that allows events to be listened to
+* and fired by name.  This makes it possible for implementing code to
+* subscribe to an event that either has not been created yet, or will
+* not be created at all.
+* @class EventTarget
+* @param opts a configuration object
+* @config emitFacade {boolean} if true, all events will emit event
+* facade payloads by default (default false)
+* @config prefix {string} the prefix to apply to non-prefixed event names
+* @config chain {boolean} if true, on/after/detach return the host to allow
+* chaining, otherwise they return an EventHandle (default false)
+*/
+var L = Y.Lang,
+PREFIX_DELIMITER = ':',
+CATEGORY_DELIMITER = '|',
+AFTER_PREFIX = '~AFTER~',
+/**
+* If the instance has a prefix attribute and the
+* event type is not prefixed, the instance prefix is
+* applied to the supplied type.
+* @method _getType
+* @private
+*/
+_getType = Y.cached(function(type, pre) {
+if (!pre || !L.isString(type) || type.indexOf(PREFIX_DELIMITER) > -1) {
+return type;
+}
+return pre + PREFIX_DELIMITER + type;
+}),
+/**
+* Returns an array with the detach key (if provided),
+* and the prefixed event name from _getType
+* Y.on('detachcategory, menu:click', fn)
+* @method _parseType
+* @private
+*/
+_parseType = Y.cached(function(type, pre) {
+var t = type, detachcategory, after, i;
+if (!L.isString(t)) {
+return t;
+}
+i = t.indexOf(AFTER_PREFIX);
+if (i > -1) {
+after = true;
+t = t.substr(AFTER_PREFIX.length);
+// Y.log(t);
+}
+i = t.indexOf(CATEGORY_DELIMITER);
+if (i > -1) {
+detachcategory = t.substr(0, (i));
+t = t.substr(i+1);
+if (t == '*') {
+t = null;
+}
+}
+// detach category, full type with instance prefix, is this an after listener, short type
+return [detachcategory, (pre) ? _getType(t, pre) : t, after, t];
+}),
+ET = function(opts) {
+// Y.log('EventTarget constructor executed: ' + this._yuid);
+var o = (L.isObject(opts)) ? opts : {};
+this._yuievt = this._yuievt || {
+id: Y.guid(),
+events: {},
+targets: {},
+config: o,
+chain: ('chain' in o) ? o.chain : Y.config.chain,
+defaults: {
+context: o.context || this,
+host: this,
+emitFacade: o.emitFacade,
+fireOnce: o.fireOnce,
+queuable: o.queuable,
+broadcast: o.broadcast,
+bubbles: ('bubbles' in o) ? o.bubbles : true
+}
+};
+};
+ET.prototype = {
+/**
+* Subscribe to a custom event hosted by this object
+* @method on
+* @param type    {string}   The type of the event
+* @param fn {Function} The callback
+* @return the event target or a detach handle per 'chain' config
+*/
+on: function(type, fn, context, x) {
+var parts = _parseType(type, this._yuievt.config.prefix), f, c, args, ret, ce,
+detachcategory, handle, store = Y.Env.evt.handles, after, adapt, shorttype,
+Node = Y.Node, n, domevent;
+if (L.isObject(type)) {
+if (L.isFunction(type)) {
+return Y.Do.before.apply(Y.Do, arguments);
+}
+f = fn;
+c = context;
+args = Y.Array(arguments, 0, true);
+ret = {};
+after = type._after;
+delete type._after;
+Y.each(type, function(v, k) {
+if (v) {
+f = v.fn || ((Y.Lang.isFunction(v)) ? v : f);
+c = v.context || c;
+}
+args[0] = (after) ? AFTER_PREFIX + k : k;
+args[1] = f;
+args[2] = c;
+ret[k] = this.on.apply(this, args);
+}, this);
+return (this._yuievt.chain) ? this : new Y.EventHandle(ret);
+}
+detachcategory = parts[0];
+after = parts[2];
+shorttype = parts[3];
+// extra redirection so we catch adaptor events too.  take a look at this.
+if (Node && (this instanceof Node) && (shorttype in Node.DOM_EVENTS)) {
+args = Y.Array(arguments, 0, true);
+args.splice(2, 0, Node.getDOMNode(this));
+// Y.log("Node detected, redirecting with these args: " + args);
+return Y.on.apply(Y, args);
+}
+type = parts[1];
+if (this instanceof YUI) {
+adapt = Y.Env.evt.plugins[type];
+args  = Y.Array(arguments, 0, true);
+args[0] = shorttype;
+if (Node) {
+n = args[2];
+if (n instanceof Y.NodeList) {
+n = Y.NodeList.getDOMNodes(n);
+} else if (n instanceof Node) {
+n = Node.getDOMNode(n);
+}
+domevent = (shorttype in Node.DOM_EVENTS);
+// Captures both DOM events and event plugins.
+if (domevent) {
+args[2] = n;
+}
+}
+// check for the existance of an event adaptor
+if (adapt) {
+Y.log('Using adaptor for ' + shorttype + ', ' + n, 'info', 'event');
+handle = adapt.on.apply(Y, args);
+} else if ((!type) || domevent) {
+handle = Y.Event._attach(args);
+}
+}
+if (!handle) {
+ce = this._yuievt.events[type] || this.publish(type);
+handle = ce._on(fn, context, (arguments.length > 3) ? Y.Array(arguments, 3, true) : null, (after) ? 'after' : true);
+}
+if (detachcategory) {
+store[detachcategory] = store[detachcategory] || {};
+store[detachcategory][type] = store[detachcategory][type] || [];
+store[detachcategory][type].push(handle);
+}
+return (this._yuievt.chain) ? this : handle;
+},
+/**
+* subscribe to an event
+* @method subscribe
+* @deprecated use on
+*/
+subscribe: function() {
+Y.log('EventTarget subscribe() is deprecated, use on()', 'warn', 'deprecated');
+return this.on.apply(this, arguments);
+},
+/**
+* Detach one or more listeners the from the specified event
+* @method detach
+* @param type {string|Object}   Either the handle to the subscriber or the
+*                        type of event.  If the type
+*                        is not specified, it will attempt to remove
+*                        the listener from all hosted events.
+* @param fn   {Function} The subscribed function to unsubscribe, if not
+*                          supplied, all subscribers will be removed.
+* @param context  {Object}   The custom object passed to subscribe.  This is
+*                        optional, but if supplied will be used to
+*                        disambiguate multiple listeners that are the same
+*                        (e.g., you subscribe many object using a function
+*                        that lives on the prototype)
+* @return {EventTarget} the host
+*/
+detach: function(type, fn, context) {
+var evts = this._yuievt.events, i, ret,
+Node = Y.Node, isNode = (this instanceof Node);
+// detachAll disabled on the Y instance.
+if (!type && (this !== Y)) {
+for (i in evts) {
+if (evts.hasOwnProperty(i)) {
+ret = evts[i].detach(fn, context);
+}
+}
+if (isNode) {
+Y.Event.purgeElement(Node.getDOMNode(this));
+}
+return ret;
+}
+var parts = _parseType(type, this._yuievt.config.prefix),
+detachcategory = L.isArray(parts) ? parts[0] : null,
+shorttype = (parts) ? parts[3] : null,
+handle, adapt, store = Y.Env.evt.handles, cat, args,
+ce,
+keyDetacher = function(lcat, ltype) {
+var handles = lcat[ltype];
+if (handles) {
+while (handles.length) {
+handle = handles.pop();
+handle.detach();
+}
+}
+};
+if (detachcategory) {
+cat = store[detachcategory];
+type = parts[1];
+if (cat) {
+if (type) {
+keyDetacher(cat, type);
+} else {
+for (i in cat) {
+if (cat.hasOwnProperty(i)) {
+keyDetacher(cat, i);
+}
+}
+}
+return (this._yuievt.chain) ? this : true;
+}
+// If this is an event handle, use it to detach
+} else if (L.isObject(type) && type.detach) {
+ret = type.detach();
+return (this._yuievt.chain) ? this : ret;
+// extra redirection so we catch adaptor events too.  take a look at this.
+} else if (isNode && ((!shorttype) || (shorttype in Node.DOM_EVENTS))) {
+args = Y.Array(arguments, 0, true);
+args[2] = Node.getDOMNode(this);
+return Y.detach.apply(Y, args);
+}
+adapt = Y.Env.evt.plugins[shorttype];
+// The YUI instance handles DOM events and adaptors
+if (this instanceof YUI) {
+args = Y.Array(arguments, 0, true);
+// use the adaptor specific detach code if
+if (adapt && adapt.detach) {
+return adapt.detach.apply(Y, args);
+// DOM event fork
+} else if (!type || (!adapt && Node && (type in Node.DOM_EVENTS))) {
+args[0] = type;
+return Y.Event.detach.apply(Y.Event, args);
+}
+}
+ce = evts[type];
+if (ce) {
+ret = ce.detach(fn, context);
+}
+return (this._yuievt.chain) ? this : ret;
+},
+/**
+* detach a listener
+* @method unsubscribe
+* @deprecated use detach
+*/
+unsubscribe: function() {
+return this.detach.apply(this, arguments);
+},
+/**
+* Removes all listeners from the specified event.  If the event type
+* is not specified, all listeners from all hosted custom events will
+* be removed.
+* @method detachAll
+* @param type {string}   The type, or name of the event
+*/
+detachAll: function(type) {
+return this.detach(type);
+},
+/**
+* Removes all listeners from the specified event.  If the event type
+* is not specified, all listeners from all hosted custom events will
+* be removed.
+* @method unsubscribeAll
+* @param type {string}   The type, or name of the event
+* @deprecated use detachAll
+*/
+unsubscribeAll: function() {
+return this.detachAll.apply(this, arguments);
+},
+/**
+* Creates a new custom event of the specified type.  If a custom event
+* by that name already exists, it will not be re-created.  In either
+* case the custom event is returned.
+*
+* @method publish
+*
+* @param type {string} the type, or name of the event
+* @param opts {object} optional config params.  Valid properties are:
+*
+*  <ul>
+*    <li>
+*   'broadcast': whether or not the YUI instance and YUI global are notified when the event is fired (false)
+*    </li>
+*    <li>
+*   'bubbles': whether or not this event bubbles (true)
+*    </li>
+*    <li>
+*   'context': the default execution context for the listeners (this)
+*    </li>
+*    <li>
+*   'defaultFn': the default function to execute when this event fires if preventDefault was not called
+*    </li>
+*    <li>
+*   'emitFacade': whether or not this event emits a facade (false)
+*    </li>
+*    <li>
+*   'prefix': the prefix for this targets events, e.g., 'menu' in 'menu:click'
+*    </li>
+*    <li>
+*   'fireOnce': if an event is configured to fire once, new subscribers after
+*   the fire will be notified immediately.
+*    </li>
+*    <li>
+*   'preventable': whether or not preventDefault() has an effect (true)
+*    </li>
+*    <li>
+*   'preventedFn': a function that is executed when preventDefault is called
+*    </li>
+*    <li>
+*   'queuable': whether or not this event can be queued during bubbling (false)
+*    </li>
+*    <li>
+*   'silent': if silent is true, debug messages are not provided for this event.
+*    </li>
+*    <li>
+*   'stoppedFn': a function that is executed when stopPropagation is called
+*    </li>
+*    <li>
+*   'type': the event type (valid option if not provided as the first parameter to publish)
+*    </li>
+*  </ul>
+*
+*  @return {Event.Custom} the custom event
+*
+*/
+publish: function(type, opts) {
+var events, ce, ret, pre = this._yuievt.config.prefix;
+type = (pre) ? _getType(type, pre) : type;
+if (L.isObject(type)) {
+ret = {};
+Y.each(type, function(v, k) {
+ret[k] = this.publish(k, v || opts);
+}, this);
+return ret;
+}
+events = this._yuievt.events;
+ce = events[type];
+if (ce) {
+// ce.log("publish applying new config to published event: '"+type+"' exists", 'info', 'event');
+if (opts) {
+ce.applyConfig(opts, true);
+}
+} else {
+// apply defaults
+ce = new Y.CustomEvent(type, (opts) ? Y.mix(opts, this._yuievt.defaults) : this._yuievt.defaults);
+events[type] = ce;
+}
+// make sure we turn the broadcast flag off if this
+// event was published as a result of bubbling
+// if (opts instanceof Y.CustomEvent) {
+//   events[type].broadcast = false;
+// }
+return events[type];
+},
+/**
+* Registers another EventTarget as a bubble target.  Bubble order
+* is determined by the order registered.  Multiple targets can
+* be specified.
+* @method addTarget
+* @param o {EventTarget} the target to add
+*/
+addTarget: function(o) {
+this._yuievt.targets[Y.stamp(o)] = o;
+this._yuievt.hasTargets = true;
+},
+/**
+* Removes a bubble target
+* @method removeTarget
+* @param o {EventTarget} the target to remove
+*/
+removeTarget: function(o) {
+delete this._yuievt.targets[Y.stamp(o)];
+},
+/**
+* Fire a custom event by name.  The callback functions will be executed
+* from the context specified when the event was created, and with the
+* following parameters.
+*
+* If the custom event object hasn't been created, then the event hasn't
+* been published and it has no subscribers.  For performance sake, we
+* immediate exit in this case.  This means the event won't bubble, so
+* if the intention is that a bubble target be notified, the event must
+* be published on this object first.
+*
+* The first argument is the event type, and any additional arguments are
+* passed to the listeners as parameters.  If the first of these is an
+* object literal, and the event is configured to emit an event facade,
+* that object is mixed into the event facade and the facade is provided
+* in place of the original object.
+*
+* @method fire
+* @param type {String|Object} The type of the event, or an object that contains
+* a 'type' property.
+* @param arguments {Object*} an arbitrary set of parameters to pass to
+* the handler.  If the first of these is an object literal and the event is
+* configured to emit an event facade, the event facade will replace that
+* parameter after the properties the object literal contains are copied to
+* the event facade.
+* @return {Event.Target} the event host
+*
+*/
+fire: function(type) {
+var typeIncluded = L.isString(type),
+t = (typeIncluded) ? type : (type && type.type),
+ce, a, ret, pre=this._yuievt.config.prefix;
+t = (pre) ? _getType(t, pre) : t;
+ce = this.getEvent(t, true);
+// this event has not been published or subscribed to
+if (!ce) {
+if (this._yuievt.hasTargets) {
+a = (typeIncluded) ? arguments : Y.Array(arguments, 0, true).unshift(t);
+return this.bubble(null, a, this);
+}
+// otherwise there is nothing to be done
+ret = true;
+} else {
+a = Y.Array(arguments, (typeIncluded) ? 1 : 0, true);
+ret = ce.fire.apply(ce, a);
+// clear target for next fire()
+ce.target = null;
+}
+return (this._yuievt.chain) ? this : ret;
+},
+/**
+* Returns the custom event of the provided type has been created, a
+* falsy value otherwise
+* @method getEvent
+* @param type {string} the type, or name of the event
+* @param prefixed {string} if true, the type is prefixed already
+* @return {Event.Custom} the custom event or null
+*/
+getEvent: function(type, prefixed) {
+var pre, e;
+if (!prefixed) {
+pre = this._yuievt.config.prefix;
+type = (pre) ? _getType(type, pre) : type;
+}
+e = this._yuievt.events;
+return (e && type in e) ? e[type] : null;
+},
+/**
+* Subscribe to a custom event hosted by this object.  The
+* supplied callback will execute after any listeners add
+* via the subscribe method, and after the default function,
+* if configured for the event, has executed.
+* @method after
+* @param type    {string}   The type of the event
+* @param fn {Function} The callback
+* @return the event target or a detach handle per 'chain' config
+*/
+after: function(type, fn) {
+var a = Y.Array(arguments, 0, true);
+switch (L.type(type)) {
+case 'function':
+return Y.Do.after.apply(Y.Do, arguments);
+case 'object':
+a[0]._after = true;
+break;
+default:
+a[0] = AFTER_PREFIX + type;
+}
+return this.on.apply(this, a);
+},
+/**
+* Executes the callback before a DOM event, custom event
+* or method.  If the first argument is a function, it
+* is assumed the target is a method.  For DOM and custom
+* events, this is an alias for Y.on.
+*
+* For DOM and custom events:
+* type, callback, context, 0-n arguments
+*
+* For methods:
+* callback, object (method host), methodName, context, 0-n arguments
+*
+* @method before
+* @return detach handle
+* @deprecated use the on method
+*/
+before: function() {
+return this.on.apply(this, arguments);
+}
+};
+Y.EventTarget = ET;
+// make Y an event target
+Y.mix(Y, ET.prototype, false, false, {
+bubbles: false
+});
+ET.call(Y);
+YUI.Env.globalEvents = YUI.Env.globalEvents || new ET();
+/**
+* Hosts YUI page level events.  This is where events bubble to
+* when the broadcast config is set to 2.  This property is
+* only available if the custom event module is loaded.
+* @property Global
+* @type EventTarget
+* @for YUI
+*/
+Y.Global = YUI.Env.globalEvents;
+// @TODO implement a global namespace function on Y.Global?
+})();
+/**
+* <code>YUI</code>'s <code>on</code> method is a unified interface for subscribing to
+* most events exposed by YUI.  This includes custom events, DOM events, and
+* function events.  <code>detach</code> is also provided to remove listeners
+* serviced by this function.
+*
+* The signature that <code>on</code> accepts varies depending on the type
+* of event being consumed.  Refer to the specific methods that will
+* service a specific request for additional information about subscribing
+* to that type of event.
+*
+* <ul>
+* <li>Custom events.  These events are defined by various
+* modules in the library.  This type of event is delegated to
+* <code>EventTarget</code>'s <code>on</code> method.
+*   <ul>
+*     <li>The type of the event</li>
+*     <li>The callback to execute</li>
+*     <li>An optional context object</li>
+*     <li>0..n additional arguments to supply the callback.</li>
+*   </ul>
+*   Example:
+*   <code>Y.on('domready', function() { // start work });</code>
+* </li>
+* <li>DOM events.  These are moments reported by the browser related
+* to browser functionality and user interaction.
+* This type of event is delegated to <code>Event</code>'s
+* <code>attach</code> method.
+*   <ul>
+*     <li>The type of the event</li>
+*     <li>The callback to execute</li>
+*     <li>The specification for the Node(s) to attach the listener
+*     to.  This can be a selector, collections, or Node/Element
+*     refereces.</li>
+*     <li>An optional context object</li>
+*     <li>0..n additional arguments to supply the callback.</li>
+*   </ul>
+*   Example:
+*   <code>Y.on('click', function(e) { // something was clicked }, '#someelement');</code>
+* </li>
+* <li>Function events.  These events can be used to react before or after a
+* function is executed.  This type of event is delegated to <code>Event.Do</code>'s
+* <code>before</code> method.
+*   <ul>
+*     <li>The callback to execute</li>
+*     <li>The object that has the function that will be listened for.</li>
+*     <li>The name of the function to listen for.</li>
+*     <li>An optional context object</li>
+*     <li>0..n additional arguments to supply the callback.</li>
+*   </ul>
+*   Example <code>Y.on(function(arg1, arg2, etc) { // obj.methodname was executed }, obj 'methodname');</code>
+* </li>
+* </ul>
+*
+* <code>on</code> corresponds to the moment before any default behavior of
+* the event.  <code>after</code> works the same way, but these listeners
+* execute after the event's default behavior.  <code>before</code> is an
+* alias for <code>on</code>.
+*
+* @method on
+* @param type** event type (this parameter does not apply for function events)
+* @param fn the callback
+* @param target** a descriptor for the target (applies to custom events only).
+* For function events, this is the object that contains the function to
+* execute.
+* @param extra** 0..n Extra information a particular event may need.  These
+* will be documented with the event.  In the case of function events, this
+* is the name of the function to execute on the host.  In the case of
+* delegate listeners, this is the event delegation specification.
+* @param context optionally change the value of 'this' in the callback
+* @param args* 0..n additional arguments to pass to the callback.
+* @return the event target or a detach handle per 'chain' config
+* @for YUI
+*/
+/**
+* after() is a unified interface for subscribing to
+* most events exposed by YUI.  This includes custom events,
+* DOM events, and AOP events.  This works the same way as
+* the on() function, only it operates after any default
+* behavior for the event has executed. @see <code>on</code> for more
+* information.
+* @method after
+* @param type event type (this parameter does not apply for function events)
+* @param fn the callback
+* @param target a descriptor for the target (applies to custom events only).
+* For function events, this is the object that contains the function to
+* execute.
+* @param extra 0..n Extra information a particular event may need.  These
+* will be documented with the event.  In the case of function events, this
+* is the name of the function to execute on the host.  In the case of
+* delegate listeners, this is the event delegation specification.
+* @param context optionally change the value of 'this' in the callback
+* @param args* 0..n additional arguments to pass to the callback.
+* @return the event target or a detach handle per 'chain' config
+* @for YUI
+*/
+}, '3.0.0' ,{requires:['oop']});

comt