--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/yui/yui3.0.0/build/event-custom/event-custom-base.js Mon Nov 23 15:14:29 2009 +0100
@@ -0,0 +1,1722 @@
+/*
+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) {
+ 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) {
+ 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) {
+ 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) {
+ 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) {
+ }
+ },
+
+ /**
+ * 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);
+ }
+
+ 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) {
+
+
+ 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));
+ 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) {
+ 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() {
+ 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']});