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YUI.add('event-custom-base', function (Y, NAME) {
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/**
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* Custom event engine, DOM event listener abstraction layer, synthetic DOM
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* events.
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* @module event-custom
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*/
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Y.Env.evt = {
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handles: {},
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plugins: {}
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};
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/**
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* Custom event engine, DOM event listener abstraction layer, synthetic DOM
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* events.
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* @module event-custom
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* @submodule event-custom-base
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*/
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/**
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* Allows for the insertion of methods that are executed before or after
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* a specified method
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* @class Do
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* @static
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*/
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var DO_BEFORE = 0,
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DO_AFTER = 1,
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DO = {
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/**
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* Cache of objects touched by the utility
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* @property objs
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* @static
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* @deprecated Since 3.6.0. The `_yuiaop` property on the AOP'd object
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* replaces the role of this property, but is considered to be private, and
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* is only mentioned to provide a migration path.
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*
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* If you have a use case which warrants migration to the _yuiaop property,
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* please file a ticket to let us know what it's used for and we can see if
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* we need to expose hooks for that functionality more formally.
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*/
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objs: null,
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/**
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* <p>Execute the supplied method before the specified function. Wrapping
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* function may optionally return an instance of the following classes to
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* further alter runtime behavior:</p>
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* <dl>
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* <dt></code>Y.Do.Halt(message, returnValue)</code></dt>
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* <dd>Immediatly stop execution and return
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* <code>returnValue</code>. No other wrapping functions will be
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* executed.</dd>
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* <dt></code>Y.Do.AlterArgs(message, newArgArray)</code></dt>
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* <dd>Replace the arguments that the original function will be
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* called with.</dd>
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* <dt></code>Y.Do.Prevent(message)</code></dt>
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* <dd>Don't execute the wrapped function. Other before phase
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* wrappers will be executed.</dd>
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* </dl>
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*
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* @method before
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* @param fn {Function} the function to execute
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* @param obj the object hosting the method to displace
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* @param sFn {string} the name of the method to displace
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* @param c The execution context for fn
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* @param arg* {mixed} 0..n additional arguments to supply to the subscriber
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* when the event fires.
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* @return {EventHandle} handle for the subscription
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* @static
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*/
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before: function(fn, obj, sFn, c) {
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var f = fn, a;
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if (c) {
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a = [fn, c].concat(Y.Array(arguments, 4, true));
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f = Y.rbind.apply(Y, a);
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}
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return this._inject(DO_BEFORE, f, obj, sFn);
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},
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/**
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* <p>Execute the supplied method after the specified function. Wrapping
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* function may optionally return an instance of the following classes to
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* further alter runtime behavior:</p>
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* <dl>
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* <dt></code>Y.Do.Halt(message, returnValue)</code></dt>
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* <dd>Immediatly stop execution and return
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* <code>returnValue</code>. No other wrapping functions will be
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* executed.</dd>
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* <dt></code>Y.Do.AlterReturn(message, returnValue)</code></dt>
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* <dd>Return <code>returnValue</code> instead of the wrapped
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* method's original return value. This can be further altered by
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* other after phase wrappers.</dd>
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* </dl>
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*
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* <p>The static properties <code>Y.Do.originalRetVal</code> and
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* <code>Y.Do.currentRetVal</code> will be populated for reference.</p>
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*
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* @method after
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* @param fn {Function} the function to execute
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* @param obj the object hosting the method to displace
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* @param sFn {string} the name of the method to displace
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* @param c The execution context for fn
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* @param arg* {mixed} 0..n additional arguments to supply to the subscriber
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* @return {EventHandle} handle for the subscription
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* @static
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*/
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after: function(fn, obj, sFn, c) {
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var f = fn, a;
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if (c) {
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a = [fn, c].concat(Y.Array(arguments, 4, true));
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f = Y.rbind.apply(Y, a);
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}
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return this._inject(DO_AFTER, f, obj, sFn);
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},
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/**
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* Execute the supplied method before or after the specified function.
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* Used by <code>before</code> and <code>after</code>.
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*
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* @method _inject
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* @param when {string} before or after
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* @param fn {Function} the function to execute
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* @param obj the object hosting the method to displace
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* @param sFn {string} the name of the method to displace
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* @param c The execution context for fn
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* @return {EventHandle} handle for the subscription
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* @private
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* @static
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*/
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_inject: function(when, fn, obj, sFn) {
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// object id
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var id = Y.stamp(obj), o, sid;
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if (!obj._yuiaop) {
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// create a map entry for the obj if it doesn't exist, to hold overridden methods
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obj._yuiaop = {};
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}
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o = obj._yuiaop;
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if (!o[sFn]) {
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// create a map entry for the method if it doesn't exist
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o[sFn] = new Y.Do.Method(obj, sFn);
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// re-route the method to our wrapper
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obj[sFn] = function() {
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return o[sFn].exec.apply(o[sFn], arguments);
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};
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}
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// subscriber id
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sid = id + Y.stamp(fn) + sFn;
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// register the callback
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o[sFn].register(sid, fn, when);
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return new Y.EventHandle(o[sFn], sid);
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},
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/**
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* Detach a before or after subscription.
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*
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* @method detach
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* @param handle {EventHandle} the subscription handle
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* @static
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*/
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detach: function(handle) {
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if (handle.detach) {
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handle.detach();
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}
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}
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};
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Y.Do = DO;
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//////////////////////////////////////////////////////////////////////////
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/**
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* Contains the return value from the wrapped method, accessible
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* by 'after' event listeners.
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*
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* @property originalRetVal
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* @static
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* @since 3.2.0
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*/
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/**
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* Contains the current state of the return value, consumable by
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* 'after' event listeners, and updated if an after subscriber
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* changes the return value generated by the wrapped function.
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*
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* @property currentRetVal
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* @static
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* @since 3.2.0
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*/
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//////////////////////////////////////////////////////////////////////////
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/**
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* Wrapper for a displaced method with aop enabled
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* @class Do.Method
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* @constructor
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* @param obj The object to operate on
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* @param sFn The name of the method to displace
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*/
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DO.Method = function(obj, sFn) {
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this.obj = obj;
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this.methodName = sFn;
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this.method = obj[sFn];
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this.before = {};
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this.after = {};
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};
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/**
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* Register a aop subscriber
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* @method register
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* @param sid {string} the subscriber id
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* @param fn {Function} the function to execute
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* @param when {string} when to execute the function
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*/
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DO.Method.prototype.register = function (sid, fn, when) {
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if (when) {
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this.after[sid] = fn;
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} else {
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this.before[sid] = fn;
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}
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};
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/**
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* Unregister a aop subscriber
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* @method delete
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* @param sid {string} the subscriber id
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* @param fn {Function} the function to execute
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* @param when {string} when to execute the function
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*/
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DO.Method.prototype._delete = function (sid) {
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delete this.before[sid];
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delete this.after[sid];
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};
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/**
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* <p>Execute the wrapped method. All arguments are passed into the wrapping
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* functions. If any of the before wrappers return an instance of
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* <code>Y.Do.Halt</code> or <code>Y.Do.Prevent</code>, neither the wrapped
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* function nor any after phase subscribers will be executed.</p>
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*
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* <p>The return value will be the return value of the wrapped function or one
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* provided by a wrapper function via an instance of <code>Y.Do.Halt</code> or
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* <code>Y.Do.AlterReturn</code>.
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*
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* @method exec
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* @param arg* {any} Arguments are passed to the wrapping and wrapped functions
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* @return {any} Return value of wrapped function unless overwritten (see above)
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*/
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DO.Method.prototype.exec = function () {
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var args = Y.Array(arguments, 0, true),
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i, ret, newRet,
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bf = this.before,
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af = this.after,
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prevented = false;
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// execute before
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for (i in bf) {
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if (bf.hasOwnProperty(i)) {
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ret = bf[i].apply(this.obj, args);
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if (ret) {
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switch (ret.constructor) {
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case DO.Halt:
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return ret.retVal;
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case DO.AlterArgs:
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args = ret.newArgs;
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break;
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case DO.Prevent:
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prevented = true;
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break;
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default:
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}
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}
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}
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}
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// execute method
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if (!prevented) {
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ret = this.method.apply(this.obj, args);
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}
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DO.originalRetVal = ret;
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DO.currentRetVal = ret;
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// execute after methods.
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for (i in af) {
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if (af.hasOwnProperty(i)) {
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newRet = af[i].apply(this.obj, args);
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// Stop processing if a Halt object is returned
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if (newRet && newRet.constructor === DO.Halt) {
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return newRet.retVal;
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// Check for a new return value
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} else if (newRet && newRet.constructor === DO.AlterReturn) {
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ret = newRet.newRetVal;
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// Update the static retval state
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DO.currentRetVal = ret;
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}
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}
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}
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return ret;
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};
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//////////////////////////////////////////////////////////////////////////
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/**
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* Return an AlterArgs object when you want to change the arguments that
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* were passed into the function. Useful for Do.before subscribers. An
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* example would be a service that scrubs out illegal characters prior to
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* executing the core business logic.
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* @class Do.AlterArgs
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* @constructor
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* @param msg {String} (optional) Explanation of the altered return value
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* @param newArgs {Array} Call parameters to be used for the original method
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* instead of the arguments originally passed in.
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*/
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DO.AlterArgs = function(msg, newArgs) {
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this.msg = msg;
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this.newArgs = newArgs;
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};
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/**
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* Return an AlterReturn object when you want to change the result returned
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* from the core method to the caller. Useful for Do.after subscribers.
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* @class Do.AlterReturn
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* @constructor
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* @param msg {String} (optional) Explanation of the altered return value
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* @param newRetVal {any} Return value passed to code that invoked the wrapped
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* function.
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*/
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DO.AlterReturn = function(msg, newRetVal) {
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this.msg = msg;
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this.newRetVal = newRetVal;
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};
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/**
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* Return a Halt object when you want to terminate the execution
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* of all subsequent subscribers as well as the wrapped method
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* if it has not exectued yet. Useful for Do.before subscribers.
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* @class Do.Halt
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* @constructor
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* @param msg {String} (optional) Explanation of why the termination was done
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* @param retVal {any} Return value passed to code that invoked the wrapped
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* function.
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*/
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DO.Halt = function(msg, retVal) {
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this.msg = msg;
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this.retVal = retVal;
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};
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/**
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* Return a Prevent object when you want to prevent the wrapped function
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* from executing, but want the remaining listeners to execute. Useful
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* for Do.before subscribers.
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* @class Do.Prevent
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367 |
* @constructor
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368 |
* @param msg {String} (optional) Explanation of why the termination was done
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*/
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370 |
DO.Prevent = function(msg) {
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this.msg = msg;
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};
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374 |
/**
|
|
|
375 |
* Return an Error object when you want to terminate the execution
|
|
|
376 |
* of all subsequent method calls.
|
|
|
377 |
* @class Do.Error
|
|
|
378 |
* @constructor
|
|
|
379 |
* @param msg {String} (optional) Explanation of the altered return value
|
|
|
380 |
* @param retVal {any} Return value passed to code that invoked the wrapped
|
|
|
381 |
* function.
|
|
|
382 |
* @deprecated use Y.Do.Halt or Y.Do.Prevent
|
|
|
383 |
*/
|
|
|
384 |
DO.Error = DO.Halt;
|
|
|
385 |
|
|
|
386 |
|
|
|
387 |
//////////////////////////////////////////////////////////////////////////
|
|
|
388 |
|
|
|
389 |
/**
|
|
|
390 |
* Custom event engine, DOM event listener abstraction layer, synthetic DOM
|
|
|
391 |
* events.
|
|
|
392 |
* @module event-custom
|
|
|
393 |
* @submodule event-custom-base
|
|
|
394 |
*/
|
|
|
395 |
|
|
|
396 |
|
|
|
397 |
// var onsubscribeType = "_event:onsub",
|
|
|
398 |
var YArray = Y.Array,
|
|
|
399 |
|
|
|
400 |
AFTER = 'after',
|
|
|
401 |
CONFIGS = [
|
|
|
402 |
'broadcast',
|
|
|
403 |
'monitored',
|
|
|
404 |
'bubbles',
|
|
|
405 |
'context',
|
|
|
406 |
'contextFn',
|
|
|
407 |
'currentTarget',
|
|
|
408 |
'defaultFn',
|
|
|
409 |
'defaultTargetOnly',
|
|
|
410 |
'details',
|
|
|
411 |
'emitFacade',
|
|
|
412 |
'fireOnce',
|
|
|
413 |
'async',
|
|
|
414 |
'host',
|
|
|
415 |
'preventable',
|
|
|
416 |
'preventedFn',
|
|
|
417 |
'queuable',
|
|
|
418 |
'silent',
|
|
|
419 |
'stoppedFn',
|
|
|
420 |
'target',
|
|
|
421 |
'type'
|
|
|
422 |
],
|
|
|
423 |
|
|
|
424 |
CONFIGS_HASH = YArray.hash(CONFIGS),
|
|
|
425 |
|
|
|
426 |
nativeSlice = Array.prototype.slice,
|
|
|
427 |
|
|
|
428 |
YUI3_SIGNATURE = 9,
|
|
|
429 |
YUI_LOG = 'yui:log',
|
|
|
430 |
|
|
|
431 |
mixConfigs = function(r, s, ov) {
|
|
|
432 |
var p;
|
|
|
433 |
|
|
|
434 |
for (p in s) {
|
|
|
435 |
if (CONFIGS_HASH[p] && (ov || !(p in r))) {
|
|
|
436 |
r[p] = s[p];
|
|
|
437 |
}
|
|
|
438 |
}
|
|
|
439 |
|
|
|
440 |
return r;
|
|
|
441 |
};
|
|
|
442 |
|
|
|
443 |
/**
|
|
|
444 |
* The CustomEvent class lets you define events for your application
|
|
|
445 |
* that can be subscribed to by one or more independent component.
|
|
|
446 |
*
|
|
|
447 |
* @param {String} type The type of event, which is passed to the callback
|
|
|
448 |
* when the event fires.
|
|
|
449 |
* @param {object} defaults configuration object.
|
|
|
450 |
* @class CustomEvent
|
|
|
451 |
* @constructor
|
|
|
452 |
*/
|
|
|
453 |
|
|
|
454 |
/**
|
|
|
455 |
* The type of event, returned to subscribers when the event fires
|
|
|
456 |
* @property type
|
|
|
457 |
* @type string
|
|
|
458 |
*/
|
|
|
459 |
|
|
|
460 |
/**
|
|
|
461 |
* By default all custom events are logged in the debug build, set silent
|
|
|
462 |
* to true to disable debug outpu for this event.
|
|
|
463 |
* @property silent
|
|
|
464 |
* @type boolean
|
|
|
465 |
*/
|
|
|
466 |
|
|
|
467 |
Y.CustomEvent = function(type, defaults) {
|
|
|
468 |
|
|
|
469 |
this._kds = Y.CustomEvent.keepDeprecatedSubs;
|
|
|
470 |
|
|
|
471 |
this.id = Y.guid();
|
|
|
472 |
|
|
|
473 |
this.type = type;
|
|
|
474 |
this.silent = this.logSystem = (type === YUI_LOG);
|
|
|
475 |
|
|
|
476 |
if (this._kds) {
|
|
|
477 |
/**
|
|
|
478 |
* The subscribers to this event
|
|
|
479 |
* @property subscribers
|
|
|
480 |
* @type Subscriber {}
|
|
|
481 |
* @deprecated
|
|
|
482 |
*/
|
|
|
483 |
|
|
|
484 |
/**
|
|
|
485 |
* 'After' subscribers
|
|
|
486 |
* @property afters
|
|
|
487 |
* @type Subscriber {}
|
|
|
488 |
* @deprecated
|
|
|
489 |
*/
|
|
|
490 |
this.subscribers = {};
|
|
|
491 |
this.afters = {};
|
|
|
492 |
}
|
|
|
493 |
|
|
|
494 |
if (defaults) {
|
|
|
495 |
mixConfigs(this, defaults, true);
|
|
|
496 |
}
|
|
|
497 |
};
|
|
|
498 |
|
|
|
499 |
/**
|
|
|
500 |
* Static flag to enable population of the <a href="#property_subscribers">`subscribers`</a>
|
|
|
501 |
* and <a href="#property_subscribers">`afters`</a> properties held on a `CustomEvent` instance.
|
|
|
502 |
*
|
|
|
503 |
* These properties were changed to private properties (`_subscribers` and `_afters`), and
|
|
|
504 |
* converted from objects to arrays for performance reasons.
|
|
|
505 |
*
|
|
|
506 |
* Setting this property to true will populate the deprecated `subscribers` and `afters`
|
|
|
507 |
* properties for people who may be using them (which is expected to be rare). There will
|
|
|
508 |
* be a performance hit, compared to the new array based implementation.
|
|
|
509 |
*
|
|
|
510 |
* If you are using these deprecated properties for a use case which the public API
|
|
|
511 |
* does not support, please file an enhancement request, and we can provide an alternate
|
|
|
512 |
* public implementation which doesn't have the performance cost required to maintiain the
|
|
|
513 |
* properties as objects.
|
|
|
514 |
*
|
|
|
515 |
* @property keepDeprecatedSubs
|
|
|
516 |
* @static
|
|
|
517 |
* @for CustomEvent
|
|
|
518 |
* @type boolean
|
|
|
519 |
* @default false
|
|
|
520 |
* @deprecated
|
|
|
521 |
*/
|
|
|
522 |
Y.CustomEvent.keepDeprecatedSubs = false;
|
|
|
523 |
|
|
|
524 |
Y.CustomEvent.mixConfigs = mixConfigs;
|
|
|
525 |
|
|
|
526 |
Y.CustomEvent.prototype = {
|
|
|
527 |
|
|
|
528 |
constructor: Y.CustomEvent,
|
|
|
529 |
|
|
|
530 |
/**
|
|
|
531 |
* Monitor when an event is attached or detached.
|
|
|
532 |
*
|
|
|
533 |
* @property monitored
|
|
|
534 |
* @type boolean
|
|
|
535 |
*/
|
|
|
536 |
|
|
|
537 |
/**
|
|
|
538 |
* If 0, this event does not broadcast. If 1, the YUI instance is notified
|
|
|
539 |
* every time this event fires. If 2, the YUI instance and the YUI global
|
|
|
540 |
* (if event is enabled on the global) are notified every time this event
|
|
|
541 |
* fires.
|
|
|
542 |
* @property broadcast
|
|
|
543 |
* @type int
|
|
|
544 |
*/
|
|
|
545 |
|
|
|
546 |
/**
|
|
|
547 |
* Specifies whether this event should be queued when the host is actively
|
|
|
548 |
* processing an event. This will effect exectution order of the callbacks
|
|
|
549 |
* for the various events.
|
|
|
550 |
* @property queuable
|
|
|
551 |
* @type boolean
|
|
|
552 |
* @default false
|
|
|
553 |
*/
|
|
|
554 |
|
|
|
555 |
/**
|
|
|
556 |
* This event has fired if true
|
|
|
557 |
*
|
|
|
558 |
* @property fired
|
|
|
559 |
* @type boolean
|
|
|
560 |
* @default false;
|
|
|
561 |
*/
|
|
|
562 |
|
|
|
563 |
/**
|
|
|
564 |
* An array containing the arguments the custom event
|
|
|
565 |
* was last fired with.
|
|
|
566 |
* @property firedWith
|
|
|
567 |
* @type Array
|
|
|
568 |
*/
|
|
|
569 |
|
|
|
570 |
/**
|
|
|
571 |
* This event should only fire one time if true, and if
|
|
|
572 |
* it has fired, any new subscribers should be notified
|
|
|
573 |
* immediately.
|
|
|
574 |
*
|
|
|
575 |
* @property fireOnce
|
|
|
576 |
* @type boolean
|
|
|
577 |
* @default false;
|
|
|
578 |
*/
|
|
|
579 |
|
|
|
580 |
/**
|
|
|
581 |
* fireOnce listeners will fire syncronously unless async
|
|
|
582 |
* is set to true
|
|
|
583 |
* @property async
|
|
|
584 |
* @type boolean
|
|
|
585 |
* @default false
|
|
|
586 |
*/
|
|
|
587 |
|
|
|
588 |
/**
|
|
|
589 |
* Flag for stopPropagation that is modified during fire()
|
|
|
590 |
* 1 means to stop propagation to bubble targets. 2 means
|
|
|
591 |
* to also stop additional subscribers on this target.
|
|
|
592 |
* @property stopped
|
|
|
593 |
* @type int
|
|
|
594 |
*/
|
|
|
595 |
|
|
|
596 |
/**
|
|
|
597 |
* Flag for preventDefault that is modified during fire().
|
|
|
598 |
* if it is not 0, the default behavior for this event
|
|
|
599 |
* @property prevented
|
|
|
600 |
* @type int
|
|
|
601 |
*/
|
|
|
602 |
|
|
|
603 |
/**
|
|
|
604 |
* Specifies the host for this custom event. This is used
|
|
|
605 |
* to enable event bubbling
|
|
|
606 |
* @property host
|
|
|
607 |
* @type EventTarget
|
|
|
608 |
*/
|
|
|
609 |
|
|
|
610 |
/**
|
|
|
611 |
* The default function to execute after event listeners
|
|
|
612 |
* have fire, but only if the default action was not
|
|
|
613 |
* prevented.
|
|
|
614 |
* @property defaultFn
|
|
|
615 |
* @type Function
|
|
|
616 |
*/
|
|
|
617 |
|
|
|
618 |
/**
|
|
|
619 |
* Flag for the default function to execute only if the
|
|
|
620 |
* firing event is the current target. This happens only
|
|
|
621 |
* when using custom event delegation and setting the
|
|
|
622 |
* flag to `true` mimics the behavior of event delegation
|
|
|
623 |
* in the DOM.
|
|
|
624 |
*
|
|
|
625 |
* @property defaultTargetOnly
|
|
|
626 |
* @type Boolean
|
|
|
627 |
* @default false
|
|
|
628 |
*/
|
|
|
629 |
|
|
|
630 |
/**
|
|
|
631 |
* The function to execute if a subscriber calls
|
|
|
632 |
* stopPropagation or stopImmediatePropagation
|
|
|
633 |
* @property stoppedFn
|
|
|
634 |
* @type Function
|
|
|
635 |
*/
|
|
|
636 |
|
|
|
637 |
/**
|
|
|
638 |
* The function to execute if a subscriber calls
|
|
|
639 |
* preventDefault
|
|
|
640 |
* @property preventedFn
|
|
|
641 |
* @type Function
|
|
|
642 |
*/
|
|
|
643 |
|
|
|
644 |
/**
|
|
|
645 |
* The subscribers to this event
|
|
|
646 |
* @property _subscribers
|
|
|
647 |
* @type Subscriber []
|
|
|
648 |
* @private
|
|
|
649 |
*/
|
|
|
650 |
|
|
|
651 |
/**
|
|
|
652 |
* 'After' subscribers
|
|
|
653 |
* @property _afters
|
|
|
654 |
* @type Subscriber []
|
|
|
655 |
* @private
|
|
|
656 |
*/
|
|
|
657 |
|
|
|
658 |
/**
|
|
|
659 |
* If set to true, the custom event will deliver an EventFacade object
|
|
|
660 |
* that is similar to a DOM event object.
|
|
|
661 |
* @property emitFacade
|
|
|
662 |
* @type boolean
|
|
|
663 |
* @default false
|
|
|
664 |
*/
|
|
|
665 |
|
|
|
666 |
/**
|
|
|
667 |
* Supports multiple options for listener signatures in order to
|
|
|
668 |
* port YUI 2 apps.
|
|
|
669 |
* @property signature
|
|
|
670 |
* @type int
|
|
|
671 |
* @default 9
|
|
|
672 |
*/
|
|
|
673 |
signature : YUI3_SIGNATURE,
|
|
|
674 |
|
|
|
675 |
/**
|
|
|
676 |
* The context the the event will fire from by default. Defaults to the YUI
|
|
|
677 |
* instance.
|
|
|
678 |
* @property context
|
|
|
679 |
* @type object
|
|
|
680 |
*/
|
|
|
681 |
context : Y,
|
|
|
682 |
|
|
|
683 |
/**
|
|
|
684 |
* Specifies whether or not this event's default function
|
|
|
685 |
* can be cancelled by a subscriber by executing preventDefault()
|
|
|
686 |
* on the event facade
|
|
|
687 |
* @property preventable
|
|
|
688 |
* @type boolean
|
|
|
689 |
* @default true
|
|
|
690 |
*/
|
|
|
691 |
preventable : true,
|
|
|
692 |
|
|
|
693 |
/**
|
|
|
694 |
* Specifies whether or not a subscriber can stop the event propagation
|
|
|
695 |
* via stopPropagation(), stopImmediatePropagation(), or halt()
|
|
|
696 |
*
|
|
|
697 |
* Events can only bubble if emitFacade is true.
|
|
|
698 |
*
|
|
|
699 |
* @property bubbles
|
|
|
700 |
* @type boolean
|
|
|
701 |
* @default true
|
|
|
702 |
*/
|
|
|
703 |
bubbles : true,
|
|
|
704 |
|
|
|
705 |
/**
|
|
|
706 |
* Returns the number of subscribers for this event as the sum of the on()
|
|
|
707 |
* subscribers and after() subscribers.
|
|
|
708 |
*
|
|
|
709 |
* @method hasSubs
|
|
|
710 |
* @return Number
|
|
|
711 |
*/
|
|
|
712 |
hasSubs: function(when) {
|
|
|
713 |
var s = 0,
|
|
|
714 |
a = 0,
|
|
|
715 |
subs = this._subscribers,
|
|
|
716 |
afters = this._afters,
|
|
|
717 |
sib = this.sibling;
|
|
|
718 |
|
|
|
719 |
if (subs) {
|
|
|
720 |
s = subs.length;
|
|
|
721 |
}
|
|
|
722 |
|
|
|
723 |
if (afters) {
|
|
|
724 |
a = afters.length;
|
|
|
725 |
}
|
|
|
726 |
|
|
|
727 |
if (sib) {
|
|
|
728 |
subs = sib._subscribers;
|
|
|
729 |
afters = sib._afters;
|
|
|
730 |
|
|
|
731 |
if (subs) {
|
|
|
732 |
s += subs.length;
|
|
|
733 |
}
|
|
|
734 |
|
|
|
735 |
if (afters) {
|
|
|
736 |
a += afters.length;
|
|
|
737 |
}
|
|
|
738 |
}
|
|
|
739 |
|
|
|
740 |
if (when) {
|
|
|
741 |
return (when === 'after') ? a : s;
|
|
|
742 |
}
|
|
|
743 |
|
|
|
744 |
return (s + a);
|
|
|
745 |
},
|
|
|
746 |
|
|
|
747 |
/**
|
|
|
748 |
* Monitor the event state for the subscribed event. The first parameter
|
|
|
749 |
* is what should be monitored, the rest are the normal parameters when
|
|
|
750 |
* subscribing to an event.
|
|
|
751 |
* @method monitor
|
|
|
752 |
* @param what {string} what to monitor ('detach', 'attach', 'publish').
|
|
|
753 |
* @return {EventHandle} return value from the monitor event subscription.
|
|
|
754 |
*/
|
|
|
755 |
monitor: function(what) {
|
|
|
756 |
this.monitored = true;
|
|
|
757 |
var type = this.id + '|' + this.type + '_' + what,
|
|
|
758 |
args = nativeSlice.call(arguments, 0);
|
|
|
759 |
args[0] = type;
|
|
|
760 |
return this.host.on.apply(this.host, args);
|
|
|
761 |
},
|
|
|
762 |
|
|
|
763 |
/**
|
|
|
764 |
* Get all of the subscribers to this event and any sibling event
|
|
|
765 |
* @method getSubs
|
|
|
766 |
* @return {Array} first item is the on subscribers, second the after.
|
|
|
767 |
*/
|
|
|
768 |
getSubs: function() {
|
|
|
769 |
|
|
|
770 |
var sibling = this.sibling,
|
|
|
771 |
subs = this._subscribers,
|
|
|
772 |
afters = this._afters,
|
|
|
773 |
siblingSubs,
|
|
|
774 |
siblingAfters;
|
|
|
775 |
|
|
|
776 |
if (sibling) {
|
|
|
777 |
siblingSubs = sibling._subscribers;
|
|
|
778 |
siblingAfters = sibling._afters;
|
|
|
779 |
}
|
|
|
780 |
|
|
|
781 |
if (siblingSubs) {
|
|
|
782 |
if (subs) {
|
|
|
783 |
subs = subs.concat(siblingSubs);
|
|
|
784 |
} else {
|
|
|
785 |
subs = siblingSubs.concat();
|
|
|
786 |
}
|
|
|
787 |
} else {
|
|
|
788 |
if (subs) {
|
|
|
789 |
subs = subs.concat();
|
|
|
790 |
} else {
|
|
|
791 |
subs = [];
|
|
|
792 |
}
|
|
|
793 |
}
|
|
|
794 |
|
|
|
795 |
if (siblingAfters) {
|
|
|
796 |
if (afters) {
|
|
|
797 |
afters = afters.concat(siblingAfters);
|
|
|
798 |
} else {
|
|
|
799 |
afters = siblingAfters.concat();
|
|
|
800 |
}
|
|
|
801 |
} else {
|
|
|
802 |
if (afters) {
|
|
|
803 |
afters = afters.concat();
|
|
|
804 |
} else {
|
|
|
805 |
afters = [];
|
|
|
806 |
}
|
|
|
807 |
}
|
|
|
808 |
|
|
|
809 |
return [subs, afters];
|
|
|
810 |
},
|
|
|
811 |
|
|
|
812 |
/**
|
|
|
813 |
* Apply configuration properties. Only applies the CONFIG whitelist
|
|
|
814 |
* @method applyConfig
|
|
|
815 |
* @param o hash of properties to apply.
|
|
|
816 |
* @param force {boolean} if true, properties that exist on the event
|
|
|
817 |
* will be overwritten.
|
|
|
818 |
*/
|
|
|
819 |
applyConfig: function(o, force) {
|
|
|
820 |
mixConfigs(this, o, force);
|
|
|
821 |
},
|
|
|
822 |
|
|
|
823 |
/**
|
|
|
824 |
* Create the Subscription for subscribing function, context, and bound
|
|
|
825 |
* arguments. If this is a fireOnce event, the subscriber is immediately
|
|
|
826 |
* notified.
|
|
|
827 |
*
|
|
|
828 |
* @method _on
|
|
|
829 |
* @param fn {Function} Subscription callback
|
|
|
830 |
* @param [context] {Object} Override `this` in the callback
|
|
|
831 |
* @param [args] {Array} bound arguments that will be passed to the callback after the arguments generated by fire()
|
|
|
832 |
* @param [when] {String} "after" to slot into after subscribers
|
|
|
833 |
* @return {EventHandle}
|
|
|
834 |
* @protected
|
|
|
835 |
*/
|
|
|
836 |
_on: function(fn, context, args, when) {
|
|
|
837 |
|
|
|
838 |
|
|
|
839 |
var s = new Y.Subscriber(fn, context, args, when),
|
|
|
840 |
firedWith;
|
|
|
841 |
|
|
|
842 |
if (this.fireOnce && this.fired) {
|
|
|
843 |
|
|
|
844 |
firedWith = this.firedWith;
|
|
|
845 |
|
|
|
846 |
// It's a little ugly for this to know about facades,
|
|
|
847 |
// but given the current breakup, not much choice without
|
|
|
848 |
// moving a whole lot of stuff around.
|
|
|
849 |
if (this.emitFacade && this._addFacadeToArgs) {
|
|
|
850 |
this._addFacadeToArgs(firedWith);
|
|
|
851 |
}
|
|
|
852 |
|
|
|
853 |
if (this.async) {
|
|
|
854 |
setTimeout(Y.bind(this._notify, this, s, firedWith), 0);
|
|
|
855 |
} else {
|
|
|
856 |
this._notify(s, firedWith);
|
|
|
857 |
}
|
|
|
858 |
}
|
|
|
859 |
|
|
|
860 |
if (when === AFTER) {
|
|
|
861 |
if (!this._afters) {
|
|
|
862 |
this._afters = [];
|
|
|
863 |
}
|
|
|
864 |
this._afters.push(s);
|
|
|
865 |
} else {
|
|
|
866 |
if (!this._subscribers) {
|
|
|
867 |
this._subscribers = [];
|
|
|
868 |
}
|
|
|
869 |
this._subscribers.push(s);
|
|
|
870 |
}
|
|
|
871 |
|
|
|
872 |
if (this._kds) {
|
|
|
873 |
if (when === AFTER) {
|
|
|
874 |
this.afters[s.id] = s;
|
|
|
875 |
} else {
|
|
|
876 |
this.subscribers[s.id] = s;
|
|
|
877 |
}
|
|
|
878 |
}
|
|
|
879 |
|
|
|
880 |
return new Y.EventHandle(this, s);
|
|
|
881 |
},
|
|
|
882 |
|
|
|
883 |
/**
|
|
|
884 |
* Listen for this event
|
|
|
885 |
* @method subscribe
|
|
|
886 |
* @param {Function} fn The function to execute.
|
|
|
887 |
* @return {EventHandle} Unsubscribe handle.
|
|
|
888 |
* @deprecated use on.
|
|
|
889 |
*/
|
|
|
890 |
subscribe: function(fn, context) {
|
|
|
891 |
var a = (arguments.length > 2) ? nativeSlice.call(arguments, 2) : null;
|
|
|
892 |
return this._on(fn, context, a, true);
|
|
|
893 |
},
|
|
|
894 |
|
|
|
895 |
/**
|
|
|
896 |
* Listen for this event
|
|
|
897 |
* @method on
|
|
|
898 |
* @param {Function} fn The function to execute.
|
|
|
899 |
* @param {object} context optional execution context.
|
|
|
900 |
* @param {mixed} arg* 0..n additional arguments to supply to the subscriber
|
|
|
901 |
* when the event fires.
|
|
|
902 |
* @return {EventHandle} An object with a detach method to detch the handler(s).
|
|
|
903 |
*/
|
|
|
904 |
on: function(fn, context) {
|
|
|
905 |
var a = (arguments.length > 2) ? nativeSlice.call(arguments, 2) : null;
|
|
|
906 |
|
|
|
907 |
if (this.monitored && this.host) {
|
|
|
908 |
this.host._monitor('attach', this, {
|
|
|
909 |
args: arguments
|
|
|
910 |
});
|
|
|
911 |
}
|
|
|
912 |
return this._on(fn, context, a, true);
|
|
|
913 |
},
|
|
|
914 |
|
|
|
915 |
/**
|
|
|
916 |
* Listen for this event after the normal subscribers have been notified and
|
|
|
917 |
* the default behavior has been applied. If a normal subscriber prevents the
|
|
|
918 |
* default behavior, it also prevents after listeners from firing.
|
|
|
919 |
* @method after
|
|
|
920 |
* @param {Function} fn The function to execute.
|
|
|
921 |
* @param {object} context optional execution context.
|
|
|
922 |
* @param {mixed} arg* 0..n additional arguments to supply to the subscriber
|
|
|
923 |
* when the event fires.
|
|
|
924 |
* @return {EventHandle} handle Unsubscribe handle.
|
|
|
925 |
*/
|
|
|
926 |
after: function(fn, context) {
|
|
|
927 |
var a = (arguments.length > 2) ? nativeSlice.call(arguments, 2) : null;
|
|
|
928 |
return this._on(fn, context, a, AFTER);
|
|
|
929 |
},
|
|
|
930 |
|
|
|
931 |
/**
|
|
|
932 |
* Detach listeners.
|
|
|
933 |
* @method detach
|
|
|
934 |
* @param {Function} fn The subscribed function to remove, if not supplied
|
|
|
935 |
* all will be removed.
|
|
|
936 |
* @param {Object} context The context object passed to subscribe.
|
|
|
937 |
* @return {Number} returns the number of subscribers unsubscribed.
|
|
|
938 |
*/
|
|
|
939 |
detach: function(fn, context) {
|
|
|
940 |
// unsubscribe handle
|
|
|
941 |
if (fn && fn.detach) {
|
|
|
942 |
return fn.detach();
|
|
|
943 |
}
|
|
|
944 |
|
|
|
945 |
var i, s,
|
|
|
946 |
found = 0,
|
|
|
947 |
subs = this._subscribers,
|
|
|
948 |
afters = this._afters;
|
|
|
949 |
|
|
|
950 |
if (subs) {
|
|
|
951 |
for (i = subs.length; i >= 0; i--) {
|
|
|
952 |
s = subs[i];
|
|
|
953 |
if (s && (!fn || fn === s.fn)) {
|
|
|
954 |
this._delete(s, subs, i);
|
|
|
955 |
found++;
|
|
|
956 |
}
|
|
|
957 |
}
|
|
|
958 |
}
|
|
|
959 |
|
|
|
960 |
if (afters) {
|
|
|
961 |
for (i = afters.length; i >= 0; i--) {
|
|
|
962 |
s = afters[i];
|
|
|
963 |
if (s && (!fn || fn === s.fn)) {
|
|
|
964 |
this._delete(s, afters, i);
|
|
|
965 |
found++;
|
|
|
966 |
}
|
|
|
967 |
}
|
|
|
968 |
}
|
|
|
969 |
|
|
|
970 |
return found;
|
|
|
971 |
},
|
|
|
972 |
|
|
|
973 |
/**
|
|
|
974 |
* Detach listeners.
|
|
|
975 |
* @method unsubscribe
|
|
|
976 |
* @param {Function} fn The subscribed function to remove, if not supplied
|
|
|
977 |
* all will be removed.
|
|
|
978 |
* @param {Object} context The context object passed to subscribe.
|
|
|
979 |
* @return {int|undefined} returns the number of subscribers unsubscribed.
|
|
|
980 |
* @deprecated use detach.
|
|
|
981 |
*/
|
|
|
982 |
unsubscribe: function() {
|
|
|
983 |
return this.detach.apply(this, arguments);
|
|
|
984 |
},
|
|
|
985 |
|
|
|
986 |
/**
|
|
|
987 |
* Notify a single subscriber
|
|
|
988 |
* @method _notify
|
|
|
989 |
* @param {Subscriber} s the subscriber.
|
|
|
990 |
* @param {Array} args the arguments array to apply to the listener.
|
|
|
991 |
* @protected
|
|
|
992 |
*/
|
|
|
993 |
_notify: function(s, args, ef) {
|
|
|
994 |
|
|
|
995 |
|
|
|
996 |
var ret;
|
|
|
997 |
|
|
|
998 |
ret = s.notify(args, this);
|
|
|
999 |
|
|
|
1000 |
if (false === ret || this.stopped > 1) {
|
|
|
1001 |
return false;
|
|
|
1002 |
}
|
|
|
1003 |
|
|
|
1004 |
return true;
|
|
|
1005 |
},
|
|
|
1006 |
|
|
|
1007 |
/**
|
|
|
1008 |
* Logger abstraction to centralize the application of the silent flag
|
|
|
1009 |
* @method log
|
|
|
1010 |
* @param {string} msg message to log.
|
|
|
1011 |
* @param {string} cat log category.
|
|
|
1012 |
*/
|
|
|
1013 |
log: function(msg, cat) {
|
|
|
1014 |
},
|
|
|
1015 |
|
|
|
1016 |
/**
|
|
|
1017 |
* Notifies the subscribers. The callback functions will be executed
|
|
|
1018 |
* from the context specified when the event was created, and with the
|
|
|
1019 |
* following parameters:
|
|
|
1020 |
* <ul>
|
|
|
1021 |
* <li>The type of event</li>
|
|
|
1022 |
* <li>All of the arguments fire() was executed with as an array</li>
|
|
|
1023 |
* <li>The custom object (if any) that was passed into the subscribe()
|
|
|
1024 |
* method</li>
|
|
|
1025 |
* </ul>
|
|
|
1026 |
* @method fire
|
|
|
1027 |
* @param {Object*} arguments an arbitrary set of parameters to pass to
|
|
|
1028 |
* the handler.
|
|
|
1029 |
* @return {boolean} false if one of the subscribers returned false,
|
|
|
1030 |
* true otherwise.
|
|
|
1031 |
*
|
|
|
1032 |
*/
|
|
|
1033 |
fire: function() {
|
|
|
1034 |
|
|
|
1035 |
// push is the fastest way to go from arguments to arrays
|
|
|
1036 |
// for most browsers currently
|
|
|
1037 |
// http://jsperf.com/push-vs-concat-vs-slice/2
|
|
|
1038 |
|
|
|
1039 |
var args = [];
|
|
|
1040 |
args.push.apply(args, arguments);
|
|
|
1041 |
|
|
|
1042 |
return this._fire(args);
|
|
|
1043 |
},
|
|
|
1044 |
|
|
|
1045 |
/**
|
|
|
1046 |
* Private internal implementation for `fire`, which is can be used directly by
|
|
|
1047 |
* `EventTarget` and other event module classes which have already converted from
|
|
|
1048 |
* an `arguments` list to an array, to avoid the repeated overhead.
|
|
|
1049 |
*
|
|
|
1050 |
* @method _fire
|
|
|
1051 |
* @private
|
|
|
1052 |
* @param {Array} args The array of arguments passed to be passed to handlers.
|
|
|
1053 |
* @return {boolean} false if one of the subscribers returned false, true otherwise.
|
|
|
1054 |
*/
|
|
|
1055 |
_fire: function(args) {
|
|
|
1056 |
|
|
|
1057 |
if (this.fireOnce && this.fired) {
|
|
|
1058 |
return true;
|
|
|
1059 |
} else {
|
|
|
1060 |
|
|
|
1061 |
// this doesn't happen if the event isn't published
|
|
|
1062 |
// this.host._monitor('fire', this.type, args);
|
|
|
1063 |
|
|
|
1064 |
this.fired = true;
|
|
|
1065 |
|
|
|
1066 |
if (this.fireOnce) {
|
|
|
1067 |
this.firedWith = args;
|
|
|
1068 |
}
|
|
|
1069 |
|
|
|
1070 |
if (this.emitFacade) {
|
|
|
1071 |
return this.fireComplex(args);
|
|
|
1072 |
} else {
|
|
|
1073 |
return this.fireSimple(args);
|
|
|
1074 |
}
|
|
|
1075 |
}
|
|
|
1076 |
},
|
|
|
1077 |
|
|
|
1078 |
/**
|
|
|
1079 |
* Set up for notifying subscribers of non-emitFacade events.
|
|
|
1080 |
*
|
|
|
1081 |
* @method fireSimple
|
|
|
1082 |
* @param args {Array} Arguments passed to fire()
|
|
|
1083 |
* @return Boolean false if a subscriber returned false
|
|
|
1084 |
* @protected
|
|
|
1085 |
*/
|
|
|
1086 |
fireSimple: function(args) {
|
|
|
1087 |
this.stopped = 0;
|
|
|
1088 |
this.prevented = 0;
|
|
|
1089 |
if (this.hasSubs()) {
|
|
|
1090 |
var subs = this.getSubs();
|
|
|
1091 |
this._procSubs(subs[0], args);
|
|
|
1092 |
this._procSubs(subs[1], args);
|
|
|
1093 |
}
|
|
|
1094 |
if (this.broadcast) {
|
|
|
1095 |
this._broadcast(args);
|
|
|
1096 |
}
|
|
|
1097 |
return this.stopped ? false : true;
|
|
|
1098 |
},
|
|
|
1099 |
|
|
|
1100 |
// Requires the event-custom-complex module for full funcitonality.
|
|
|
1101 |
fireComplex: function(args) {
|
|
|
1102 |
args[0] = args[0] || {};
|
|
|
1103 |
return this.fireSimple(args);
|
|
|
1104 |
},
|
|
|
1105 |
|
|
|
1106 |
/**
|
|
|
1107 |
* Notifies a list of subscribers.
|
|
|
1108 |
*
|
|
|
1109 |
* @method _procSubs
|
|
|
1110 |
* @param subs {Array} List of subscribers
|
|
|
1111 |
* @param args {Array} Arguments passed to fire()
|
|
|
1112 |
* @param ef {}
|
|
|
1113 |
* @return Boolean false if a subscriber returns false or stops the event
|
|
|
1114 |
* propagation via e.stopPropagation(),
|
|
|
1115 |
* e.stopImmediatePropagation(), or e.halt()
|
|
|
1116 |
* @private
|
|
|
1117 |
*/
|
|
|
1118 |
_procSubs: function(subs, args, ef) {
|
|
|
1119 |
var s, i, l;
|
|
|
1120 |
|
|
|
1121 |
for (i = 0, l = subs.length; i < l; i++) {
|
|
|
1122 |
s = subs[i];
|
|
|
1123 |
if (s && s.fn) {
|
|
|
1124 |
if (false === this._notify(s, args, ef)) {
|
|
|
1125 |
this.stopped = 2;
|
|
|
1126 |
}
|
|
|
1127 |
if (this.stopped === 2) {
|
|
|
1128 |
return false;
|
|
|
1129 |
}
|
|
|
1130 |
}
|
|
|
1131 |
}
|
|
|
1132 |
|
|
|
1133 |
return true;
|
|
|
1134 |
},
|
|
|
1135 |
|
|
|
1136 |
/**
|
|
|
1137 |
* Notifies the YUI instance if the event is configured with broadcast = 1,
|
|
|
1138 |
* and both the YUI instance and Y.Global if configured with broadcast = 2.
|
|
|
1139 |
*
|
|
|
1140 |
* @method _broadcast
|
|
|
1141 |
* @param args {Array} Arguments sent to fire()
|
|
|
1142 |
* @private
|
|
|
1143 |
*/
|
|
|
1144 |
_broadcast: function(args) {
|
|
|
1145 |
if (!this.stopped && this.broadcast) {
|
|
|
1146 |
|
|
|
1147 |
var a = args.concat();
|
|
|
1148 |
a.unshift(this.type);
|
|
|
1149 |
|
|
|
1150 |
if (this.host !== Y) {
|
|
|
1151 |
Y.fire.apply(Y, a);
|
|
|
1152 |
}
|
|
|
1153 |
|
|
|
1154 |
if (this.broadcast === 2) {
|
|
|
1155 |
Y.Global.fire.apply(Y.Global, a);
|
|
|
1156 |
}
|
|
|
1157 |
}
|
|
|
1158 |
},
|
|
|
1159 |
|
|
|
1160 |
/**
|
|
|
1161 |
* Removes all listeners
|
|
|
1162 |
* @method unsubscribeAll
|
|
|
1163 |
* @return {Number} The number of listeners unsubscribed.
|
|
|
1164 |
* @deprecated use detachAll.
|
|
|
1165 |
*/
|
|
|
1166 |
unsubscribeAll: function() {
|
|
|
1167 |
return this.detachAll.apply(this, arguments);
|
|
|
1168 |
},
|
|
|
1169 |
|
|
|
1170 |
/**
|
|
|
1171 |
* Removes all listeners
|
|
|
1172 |
* @method detachAll
|
|
|
1173 |
* @return {Number} The number of listeners unsubscribed.
|
|
|
1174 |
*/
|
|
|
1175 |
detachAll: function() {
|
|
|
1176 |
return this.detach();
|
|
|
1177 |
},
|
|
|
1178 |
|
|
|
1179 |
/**
|
|
|
1180 |
* Deletes the subscriber from the internal store of on() and after()
|
|
|
1181 |
* subscribers.
|
|
|
1182 |
*
|
|
|
1183 |
* @method _delete
|
|
|
1184 |
* @param s subscriber object.
|
|
|
1185 |
* @param subs (optional) on or after subscriber array
|
|
|
1186 |
* @param index (optional) The index found.
|
|
|
1187 |
* @private
|
|
|
1188 |
*/
|
|
|
1189 |
_delete: function(s, subs, i) {
|
|
|
1190 |
var when = s._when;
|
|
|
1191 |
|
|
|
1192 |
if (!subs) {
|
|
|
1193 |
subs = (when === AFTER) ? this._afters : this._subscribers;
|
|
|
1194 |
}
|
|
|
1195 |
|
|
|
1196 |
if (subs) {
|
|
|
1197 |
i = YArray.indexOf(subs, s, 0);
|
|
|
1198 |
|
|
|
1199 |
if (s && subs[i] === s) {
|
|
|
1200 |
subs.splice(i, 1);
|
|
|
1201 |
}
|
|
|
1202 |
}
|
|
|
1203 |
|
|
|
1204 |
if (this._kds) {
|
|
|
1205 |
if (when === AFTER) {
|
|
|
1206 |
delete this.afters[s.id];
|
|
|
1207 |
} else {
|
|
|
1208 |
delete this.subscribers[s.id];
|
|
|
1209 |
}
|
|
|
1210 |
}
|
|
|
1211 |
|
|
|
1212 |
if (this.monitored && this.host) {
|
|
|
1213 |
this.host._monitor('detach', this, {
|
|
|
1214 |
ce: this,
|
|
|
1215 |
sub: s
|
|
|
1216 |
});
|
|
|
1217 |
}
|
|
|
1218 |
|
|
|
1219 |
if (s) {
|
|
|
1220 |
s.deleted = true;
|
|
|
1221 |
}
|
|
|
1222 |
}
|
|
|
1223 |
};
|
|
|
1224 |
/**
|
|
|
1225 |
* Stores the subscriber information to be used when the event fires.
|
|
|
1226 |
* @param {Function} fn The wrapped function to execute.
|
|
|
1227 |
* @param {Object} context The value of the keyword 'this' in the listener.
|
|
|
1228 |
* @param {Array} args* 0..n additional arguments to supply the listener.
|
|
|
1229 |
*
|
|
|
1230 |
* @class Subscriber
|
|
|
1231 |
* @constructor
|
|
|
1232 |
*/
|
|
|
1233 |
Y.Subscriber = function(fn, context, args, when) {
|
|
|
1234 |
|
|
|
1235 |
/**
|
|
|
1236 |
* The callback that will be execute when the event fires
|
|
|
1237 |
* This is wrapped by Y.rbind if obj was supplied.
|
|
|
1238 |
* @property fn
|
|
|
1239 |
* @type Function
|
|
|
1240 |
*/
|
|
|
1241 |
this.fn = fn;
|
|
|
1242 |
|
|
|
1243 |
/**
|
|
|
1244 |
* Optional 'this' keyword for the listener
|
|
|
1245 |
* @property context
|
|
|
1246 |
* @type Object
|
|
|
1247 |
*/
|
|
|
1248 |
this.context = context;
|
|
|
1249 |
|
|
|
1250 |
/**
|
|
|
1251 |
* Unique subscriber id
|
|
|
1252 |
* @property id
|
|
|
1253 |
* @type String
|
|
|
1254 |
*/
|
|
|
1255 |
this.id = Y.guid();
|
|
|
1256 |
|
|
|
1257 |
/**
|
|
|
1258 |
* Additional arguments to propagate to the subscriber
|
|
|
1259 |
* @property args
|
|
|
1260 |
* @type Array
|
|
|
1261 |
*/
|
|
|
1262 |
this.args = args;
|
|
|
1263 |
|
|
|
1264 |
this._when = when;
|
|
|
1265 |
|
|
|
1266 |
/**
|
|
|
1267 |
* Custom events for a given fire transaction.
|
|
|
1268 |
* @property events
|
|
|
1269 |
* @type {EventTarget}
|
|
|
1270 |
*/
|
|
|
1271 |
// this.events = null;
|
|
|
1272 |
|
|
|
1273 |
/**
|
|
|
1274 |
* This listener only reacts to the event once
|
|
|
1275 |
* @property once
|
|
|
1276 |
*/
|
|
|
1277 |
// this.once = false;
|
|
|
1278 |
|
|
|
1279 |
};
|
|
|
1280 |
|
|
|
1281 |
Y.Subscriber.prototype = {
|
|
|
1282 |
constructor: Y.Subscriber,
|
|
|
1283 |
|
|
|
1284 |
_notify: function(c, args, ce) {
|
|
|
1285 |
if (this.deleted && !this.postponed) {
|
|
|
1286 |
if (this.postponed) {
|
|
|
1287 |
delete this.fn;
|
|
|
1288 |
delete this.context;
|
|
|
1289 |
} else {
|
|
|
1290 |
delete this.postponed;
|
|
|
1291 |
return null;
|
|
|
1292 |
}
|
|
|
1293 |
}
|
|
|
1294 |
var a = this.args, ret;
|
|
|
1295 |
switch (ce.signature) {
|
|
|
1296 |
case 0:
|
|
|
1297 |
ret = this.fn.call(c, ce.type, args, c);
|
|
|
1298 |
break;
|
|
|
1299 |
case 1:
|
|
|
1300 |
ret = this.fn.call(c, args[0] || null, c);
|
|
|
1301 |
break;
|
|
|
1302 |
default:
|
|
|
1303 |
if (a || args) {
|
|
|
1304 |
args = args || [];
|
|
|
1305 |
a = (a) ? args.concat(a) : args;
|
|
|
1306 |
ret = this.fn.apply(c, a);
|
|
|
1307 |
} else {
|
|
|
1308 |
ret = this.fn.call(c);
|
|
|
1309 |
}
|
|
|
1310 |
}
|
|
|
1311 |
|
|
|
1312 |
if (this.once) {
|
|
|
1313 |
ce._delete(this);
|
|
|
1314 |
}
|
|
|
1315 |
|
|
|
1316 |
return ret;
|
|
|
1317 |
},
|
|
|
1318 |
|
|
|
1319 |
/**
|
|
|
1320 |
* Executes the subscriber.
|
|
|
1321 |
* @method notify
|
|
|
1322 |
* @param args {Array} Arguments array for the subscriber.
|
|
|
1323 |
* @param ce {CustomEvent} The custom event that sent the notification.
|
|
|
1324 |
*/
|
|
|
1325 |
notify: function(args, ce) {
|
|
|
1326 |
var c = this.context,
|
|
|
1327 |
ret = true;
|
|
|
1328 |
|
|
|
1329 |
if (!c) {
|
|
|
1330 |
c = (ce.contextFn) ? ce.contextFn() : ce.context;
|
|
|
1331 |
}
|
|
|
1332 |
|
|
|
1333 |
// only catch errors if we will not re-throw them.
|
|
|
1334 |
if (Y.config && Y.config.throwFail) {
|
|
|
1335 |
ret = this._notify(c, args, ce);
|
|
|
1336 |
} else {
|
|
|
1337 |
try {
|
|
|
1338 |
ret = this._notify(c, args, ce);
|
|
|
1339 |
} catch (e) {
|
|
|
1340 |
Y.error(this + ' failed: ' + e.message, e);
|
|
|
1341 |
}
|
|
|
1342 |
}
|
|
|
1343 |
|
|
|
1344 |
return ret;
|
|
|
1345 |
},
|
|
|
1346 |
|
|
|
1347 |
/**
|
|
|
1348 |
* Returns true if the fn and obj match this objects properties.
|
|
|
1349 |
* Used by the unsubscribe method to match the right subscriber.
|
|
|
1350 |
*
|
|
|
1351 |
* @method contains
|
|
|
1352 |
* @param {Function} fn the function to execute.
|
|
|
1353 |
* @param {Object} context optional 'this' keyword for the listener.
|
|
|
1354 |
* @return {boolean} true if the supplied arguments match this
|
|
|
1355 |
* subscriber's signature.
|
|
|
1356 |
*/
|
|
|
1357 |
contains: function(fn, context) {
|
|
|
1358 |
if (context) {
|
|
|
1359 |
return ((this.fn === fn) && this.context === context);
|
|
|
1360 |
} else {
|
|
|
1361 |
return (this.fn === fn);
|
|
|
1362 |
}
|
|
|
1363 |
},
|
|
|
1364 |
|
|
|
1365 |
valueOf : function() {
|
|
|
1366 |
return this.id;
|
|
|
1367 |
}
|
|
|
1368 |
|
|
|
1369 |
};
|
|
|
1370 |
/**
|
|
|
1371 |
* Return value from all subscribe operations
|
|
|
1372 |
* @class EventHandle
|
|
|
1373 |
* @constructor
|
|
|
1374 |
* @param {CustomEvent} evt the custom event.
|
|
|
1375 |
* @param {Subscriber} sub the subscriber.
|
|
|
1376 |
*/
|
|
|
1377 |
Y.EventHandle = function(evt, sub) {
|
|
|
1378 |
|
|
|
1379 |
/**
|
|
|
1380 |
* The custom event
|
|
|
1381 |
*
|
|
|
1382 |
* @property evt
|
|
|
1383 |
* @type CustomEvent
|
|
|
1384 |
*/
|
|
|
1385 |
this.evt = evt;
|
|
|
1386 |
|
|
|
1387 |
/**
|
|
|
1388 |
* The subscriber object
|
|
|
1389 |
*
|
|
|
1390 |
* @property sub
|
|
|
1391 |
* @type Subscriber
|
|
|
1392 |
*/
|
|
|
1393 |
this.sub = sub;
|
|
|
1394 |
};
|
|
|
1395 |
|
|
|
1396 |
Y.EventHandle.prototype = {
|
|
|
1397 |
batch: function(f, c) {
|
|
|
1398 |
f.call(c || this, this);
|
|
|
1399 |
if (Y.Lang.isArray(this.evt)) {
|
|
|
1400 |
Y.Array.each(this.evt, function(h) {
|
|
|
1401 |
h.batch.call(c || h, f);
|
|
|
1402 |
});
|
|
|
1403 |
}
|
|
|
1404 |
},
|
|
|
1405 |
|
|
|
1406 |
/**
|
|
|
1407 |
* Detaches this subscriber
|
|
|
1408 |
* @method detach
|
|
|
1409 |
* @return {Number} the number of detached listeners
|
|
|
1410 |
*/
|
|
|
1411 |
detach: function() {
|
|
|
1412 |
var evt = this.evt, detached = 0, i;
|
|
|
1413 |
if (evt) {
|
|
|
1414 |
if (Y.Lang.isArray(evt)) {
|
|
|
1415 |
for (i = 0; i < evt.length; i++) {
|
|
|
1416 |
detached += evt[i].detach();
|
|
|
1417 |
}
|
|
|
1418 |
} else {
|
|
|
1419 |
evt._delete(this.sub);
|
|
|
1420 |
detached = 1;
|
|
|
1421 |
}
|
|
|
1422 |
|
|
|
1423 |
}
|
|
|
1424 |
|
|
|
1425 |
return detached;
|
|
|
1426 |
},
|
|
|
1427 |
|
|
|
1428 |
/**
|
|
|
1429 |
* Monitor the event state for the subscribed event. The first parameter
|
|
|
1430 |
* is what should be monitored, the rest are the normal parameters when
|
|
|
1431 |
* subscribing to an event.
|
|
|
1432 |
* @method monitor
|
|
|
1433 |
* @param what {string} what to monitor ('attach', 'detach', 'publish').
|
|
|
1434 |
* @return {EventHandle} return value from the monitor event subscription.
|
|
|
1435 |
*/
|
|
|
1436 |
monitor: function(what) {
|
|
|
1437 |
return this.evt.monitor.apply(this.evt, arguments);
|
|
|
1438 |
}
|
|
|
1439 |
};
|
|
|
1440 |
|
|
|
1441 |
/**
|
|
|
1442 |
* Custom event engine, DOM event listener abstraction layer, synthetic DOM
|
|
|
1443 |
* events.
|
|
|
1444 |
* @module event-custom
|
|
|
1445 |
* @submodule event-custom-base
|
|
|
1446 |
*/
|
|
|
1447 |
|
|
|
1448 |
/**
|
|
|
1449 |
* EventTarget provides the implementation for any object to
|
|
|
1450 |
* publish, subscribe and fire to custom events, and also
|
|
|
1451 |
* alows other EventTargets to target the object with events
|
|
|
1452 |
* sourced from the other object.
|
|
|
1453 |
* EventTarget is designed to be used with Y.augment to wrap
|
|
|
1454 |
* EventCustom in an interface that allows events to be listened to
|
|
|
1455 |
* and fired by name. This makes it possible for implementing code to
|
|
|
1456 |
* subscribe to an event that either has not been created yet, or will
|
|
|
1457 |
* not be created at all.
|
|
|
1458 |
* @class EventTarget
|
|
|
1459 |
* @param opts a configuration object
|
|
|
1460 |
* @config emitFacade {boolean} if true, all events will emit event
|
|
|
1461 |
* facade payloads by default (default false)
|
|
|
1462 |
* @config prefix {String} the prefix to apply to non-prefixed event names
|
|
|
1463 |
*/
|
|
|
1464 |
|
|
|
1465 |
var L = Y.Lang,
|
|
|
1466 |
PREFIX_DELIMITER = ':',
|
|
|
1467 |
CATEGORY_DELIMITER = '|',
|
|
|
1468 |
AFTER_PREFIX = '~AFTER~',
|
|
|
1469 |
WILD_TYPE_RE = /(.*?)(:)(.*?)/,
|
|
|
1470 |
|
|
|
1471 |
_wildType = Y.cached(function(type) {
|
|
|
1472 |
return type.replace(WILD_TYPE_RE, "*$2$3");
|
|
|
1473 |
}),
|
|
|
1474 |
|
|
|
1475 |
/**
|
|
|
1476 |
* If the instance has a prefix attribute and the
|
|
|
1477 |
* event type is not prefixed, the instance prefix is
|
|
|
1478 |
* applied to the supplied type.
|
|
|
1479 |
* @method _getType
|
|
|
1480 |
* @private
|
|
|
1481 |
*/
|
|
|
1482 |
_getType = function(type, pre) {
|
|
|
1483 |
|
|
|
1484 |
if (!pre || !type || type.indexOf(PREFIX_DELIMITER) > -1) {
|
|
|
1485 |
return type;
|
|
|
1486 |
}
|
|
|
1487 |
|
|
|
1488 |
return pre + PREFIX_DELIMITER + type;
|
|
|
1489 |
},
|
|
|
1490 |
|
|
|
1491 |
/**
|
|
|
1492 |
* Returns an array with the detach key (if provided),
|
|
|
1493 |
* and the prefixed event name from _getType
|
|
|
1494 |
* Y.on('detachcategory| menu:click', fn)
|
|
|
1495 |
* @method _parseType
|
|
|
1496 |
* @private
|
|
|
1497 |
*/
|
|
|
1498 |
_parseType = Y.cached(function(type, pre) {
|
|
|
1499 |
|
|
|
1500 |
var t = type, detachcategory, after, i;
|
|
|
1501 |
|
|
|
1502 |
if (!L.isString(t)) {
|
|
|
1503 |
return t;
|
|
|
1504 |
}
|
|
|
1505 |
|
|
|
1506 |
i = t.indexOf(AFTER_PREFIX);
|
|
|
1507 |
|
|
|
1508 |
if (i > -1) {
|
|
|
1509 |
after = true;
|
|
|
1510 |
t = t.substr(AFTER_PREFIX.length);
|
|
|
1511 |
}
|
|
|
1512 |
|
|
|
1513 |
i = t.indexOf(CATEGORY_DELIMITER);
|
|
|
1514 |
|
|
|
1515 |
if (i > -1) {
|
|
|
1516 |
detachcategory = t.substr(0, (i));
|
|
|
1517 |
t = t.substr(i+1);
|
|
|
1518 |
if (t === '*') {
|
|
|
1519 |
t = null;
|
|
|
1520 |
}
|
|
|
1521 |
}
|
|
|
1522 |
|
|
|
1523 |
// detach category, full type with instance prefix, is this an after listener, short type
|
|
|
1524 |
return [detachcategory, (pre) ? _getType(t, pre) : t, after, t];
|
|
|
1525 |
}),
|
|
|
1526 |
|
|
|
1527 |
ET = function(opts) {
|
|
|
1528 |
|
|
|
1529 |
var etState = this._yuievt,
|
|
|
1530 |
etConfig;
|
|
|
1531 |
|
|
|
1532 |
if (!etState) {
|
|
|
1533 |
etState = this._yuievt = {
|
|
|
1534 |
events: {}, // PERF: Not much point instantiating lazily. We're bound to have events
|
|
|
1535 |
targets: null, // PERF: Instantiate lazily, if user actually adds target,
|
|
|
1536 |
config: {
|
|
|
1537 |
host: this,
|
|
|
1538 |
context: this
|
|
|
1539 |
},
|
|
|
1540 |
chain: Y.config.chain
|
|
|
1541 |
};
|
|
|
1542 |
}
|
|
|
1543 |
|
|
|
1544 |
etConfig = etState.config;
|
|
|
1545 |
|
|
|
1546 |
if (opts) {
|
|
|
1547 |
mixConfigs(etConfig, opts, true);
|
|
|
1548 |
|
|
|
1549 |
if (opts.chain !== undefined) {
|
|
|
1550 |
etState.chain = opts.chain;
|
|
|
1551 |
}
|
|
|
1552 |
|
|
|
1553 |
if (opts.prefix) {
|
|
|
1554 |
etConfig.prefix = opts.prefix;
|
|
|
1555 |
}
|
|
|
1556 |
}
|
|
|
1557 |
};
|
|
|
1558 |
|
|
|
1559 |
ET.prototype = {
|
|
|
1560 |
|
|
|
1561 |
constructor: ET,
|
|
|
1562 |
|
|
|
1563 |
/**
|
|
|
1564 |
* Listen to a custom event hosted by this object one time.
|
|
|
1565 |
* This is the equivalent to <code>on</code> except the
|
|
|
1566 |
* listener is immediatelly detached when it is executed.
|
|
|
1567 |
* @method once
|
|
|
1568 |
* @param {String} type The name of the event
|
|
|
1569 |
* @param {Function} fn The callback to execute in response to the event
|
|
|
1570 |
* @param {Object} [context] Override `this` object in callback
|
|
|
1571 |
* @param {Any} [arg*] 0..n additional arguments to supply to the subscriber
|
|
|
1572 |
* @return {EventHandle} A subscription handle capable of detaching the
|
|
|
1573 |
* subscription
|
|
|
1574 |
*/
|
|
|
1575 |
once: function() {
|
|
|
1576 |
var handle = this.on.apply(this, arguments);
|
|
|
1577 |
handle.batch(function(hand) {
|
|
|
1578 |
if (hand.sub) {
|
|
|
1579 |
hand.sub.once = true;
|
|
|
1580 |
}
|
|
|
1581 |
});
|
|
|
1582 |
return handle;
|
|
|
1583 |
},
|
|
|
1584 |
|
|
|
1585 |
/**
|
|
|
1586 |
* Listen to a custom event hosted by this object one time.
|
|
|
1587 |
* This is the equivalent to <code>after</code> except the
|
|
|
1588 |
* listener is immediatelly detached when it is executed.
|
|
|
1589 |
* @method onceAfter
|
|
|
1590 |
* @param {String} type The name of the event
|
|
|
1591 |
* @param {Function} fn The callback to execute in response to the event
|
|
|
1592 |
* @param {Object} [context] Override `this` object in callback
|
|
|
1593 |
* @param {Any} [arg*] 0..n additional arguments to supply to the subscriber
|
|
|
1594 |
* @return {EventHandle} A subscription handle capable of detaching that
|
|
|
1595 |
* subscription
|
|
|
1596 |
*/
|
|
|
1597 |
onceAfter: function() {
|
|
|
1598 |
var handle = this.after.apply(this, arguments);
|
|
|
1599 |
handle.batch(function(hand) {
|
|
|
1600 |
if (hand.sub) {
|
|
|
1601 |
hand.sub.once = true;
|
|
|
1602 |
}
|
|
|
1603 |
});
|
|
|
1604 |
return handle;
|
|
|
1605 |
},
|
|
|
1606 |
|
|
|
1607 |
/**
|
|
|
1608 |
* Takes the type parameter passed to 'on' and parses out the
|
|
|
1609 |
* various pieces that could be included in the type. If the
|
|
|
1610 |
* event type is passed without a prefix, it will be expanded
|
|
|
1611 |
* to include the prefix one is supplied or the event target
|
|
|
1612 |
* is configured with a default prefix.
|
|
|
1613 |
* @method parseType
|
|
|
1614 |
* @param {String} type the type
|
|
|
1615 |
* @param {String} [pre] The prefix. Defaults to this._yuievt.config.prefix
|
|
|
1616 |
* @since 3.3.0
|
|
|
1617 |
* @return {Array} an array containing:
|
|
|
1618 |
* * the detach category, if supplied,
|
|
|
1619 |
* * the prefixed event type,
|
|
|
1620 |
* * whether or not this is an after listener,
|
|
|
1621 |
* * the supplied event type
|
|
|
1622 |
*/
|
|
|
1623 |
parseType: function(type, pre) {
|
|
|
1624 |
return _parseType(type, pre || this._yuievt.config.prefix);
|
|
|
1625 |
},
|
|
|
1626 |
|
|
|
1627 |
/**
|
|
|
1628 |
* Subscribe a callback function to a custom event fired by this object or
|
|
|
1629 |
* from an object that bubbles its events to this object.
|
|
|
1630 |
*
|
|
|
1631 |
* this.on("change", this._onChange, this);
|
|
|
1632 |
*
|
|
|
1633 |
* Callback functions for events published with `emitFacade = true` will
|
|
|
1634 |
* receive an `EventFacade` as the first argument (typically named "e").
|
|
|
1635 |
* These callbacks can then call `e.preventDefault()` to disable the
|
|
|
1636 |
* behavior published to that event's `defaultFn`. See the `EventFacade`
|
|
|
1637 |
* API for all available properties and methods. Subscribers to
|
|
|
1638 |
* non-`emitFacade` events will receive the arguments passed to `fire()`
|
|
|
1639 |
* after the event name.
|
|
|
1640 |
*
|
|
|
1641 |
* To subscribe to multiple events at once, pass an object as the first
|
|
|
1642 |
* argument, where the key:value pairs correspond to the eventName:callback.
|
|
|
1643 |
*
|
|
|
1644 |
* this.on({
|
|
|
1645 |
* "attrChange" : this._onAttrChange,
|
|
|
1646 |
* "change" : this._onChange
|
|
|
1647 |
* });
|
|
|
1648 |
*
|
|
|
1649 |
* You can also pass an array of event names as the first argument to
|
|
|
1650 |
* subscribe to all listed events with the same callback.
|
|
|
1651 |
*
|
|
|
1652 |
* this.on([ "change", "attrChange" ], this._onChange);
|
|
|
1653 |
*
|
|
|
1654 |
* Returning `false` from a callback is supported as an alternative to
|
|
|
1655 |
* calling `e.preventDefault(); e.stopPropagation();`. However, it is
|
|
|
1656 |
* recommended to use the event methods whenever possible.
|
|
|
1657 |
*
|
|
|
1658 |
* @method on
|
|
|
1659 |
* @param {String} type The name of the event
|
|
|
1660 |
* @param {Function} fn The callback to execute in response to the event
|
|
|
1661 |
* @param {Object} [context] Override `this` object in callback
|
|
|
1662 |
* @param {Any} [arg*] 0..n additional arguments to supply to the subscriber
|
|
|
1663 |
* @return {EventHandle} A subscription handle capable of detaching that
|
|
|
1664 |
* subscription
|
|
|
1665 |
*/
|
|
|
1666 |
on: function(type, fn, context) {
|
|
|
1667 |
|
|
|
1668 |
var yuievt = this._yuievt,
|
|
|
1669 |
parts = _parseType(type, yuievt.config.prefix), f, c, args, ret, ce,
|
|
|
1670 |
detachcategory, handle, store = Y.Env.evt.handles, after, adapt, shorttype,
|
|
|
1671 |
Node = Y.Node, n, domevent, isArr;
|
|
|
1672 |
|
|
|
1673 |
// full name, args, detachcategory, after
|
|
|
1674 |
this._monitor('attach', parts[1], {
|
|
|
1675 |
args: arguments,
|
|
|
1676 |
category: parts[0],
|
|
|
1677 |
after: parts[2]
|
|
|
1678 |
});
|
|
|
1679 |
|
|
|
1680 |
if (L.isObject(type)) {
|
|
|
1681 |
|
|
|
1682 |
if (L.isFunction(type)) {
|
|
|
1683 |
return Y.Do.before.apply(Y.Do, arguments);
|
|
|
1684 |
}
|
|
|
1685 |
|
|
|
1686 |
f = fn;
|
|
|
1687 |
c = context;
|
|
|
1688 |
args = nativeSlice.call(arguments, 0);
|
|
|
1689 |
ret = [];
|
|
|
1690 |
|
|
|
1691 |
if (L.isArray(type)) {
|
|
|
1692 |
isArr = true;
|
|
|
1693 |
}
|
|
|
1694 |
|
|
|
1695 |
after = type._after;
|
|
|
1696 |
delete type._after;
|
|
|
1697 |
|
|
|
1698 |
Y.each(type, function(v, k) {
|
|
|
1699 |
|
|
|
1700 |
if (L.isObject(v)) {
|
|
|
1701 |
f = v.fn || ((L.isFunction(v)) ? v : f);
|
|
|
1702 |
c = v.context || c;
|
|
|
1703 |
}
|
|
|
1704 |
|
|
|
1705 |
var nv = (after) ? AFTER_PREFIX : '';
|
|
|
1706 |
|
|
|
1707 |
args[0] = nv + ((isArr) ? v : k);
|
|
|
1708 |
args[1] = f;
|
|
|
1709 |
args[2] = c;
|
|
|
1710 |
|
|
|
1711 |
ret.push(this.on.apply(this, args));
|
|
|
1712 |
|
|
|
1713 |
}, this);
|
|
|
1714 |
|
|
|
1715 |
return (yuievt.chain) ? this : new Y.EventHandle(ret);
|
|
|
1716 |
}
|
|
|
1717 |
|
|
|
1718 |
detachcategory = parts[0];
|
|
|
1719 |
after = parts[2];
|
|
|
1720 |
shorttype = parts[3];
|
|
|
1721 |
|
|
|
1722 |
// extra redirection so we catch adaptor events too. take a look at this.
|
|
|
1723 |
if (Node && Y.instanceOf(this, Node) && (shorttype in Node.DOM_EVENTS)) {
|
|
|
1724 |
args = nativeSlice.call(arguments, 0);
|
|
|
1725 |
args.splice(2, 0, Node.getDOMNode(this));
|
|
|
1726 |
return Y.on.apply(Y, args);
|
|
|
1727 |
}
|
|
|
1728 |
|
|
|
1729 |
type = parts[1];
|
|
|
1730 |
|
|
|
1731 |
if (Y.instanceOf(this, YUI)) {
|
|
|
1732 |
|
|
|
1733 |
adapt = Y.Env.evt.plugins[type];
|
|
|
1734 |
args = nativeSlice.call(arguments, 0);
|
|
|
1735 |
args[0] = shorttype;
|
|
|
1736 |
|
|
|
1737 |
if (Node) {
|
|
|
1738 |
n = args[2];
|
|
|
1739 |
|
|
|
1740 |
if (Y.instanceOf(n, Y.NodeList)) {
|
|
|
1741 |
n = Y.NodeList.getDOMNodes(n);
|
|
|
1742 |
} else if (Y.instanceOf(n, Node)) {
|
|
|
1743 |
n = Node.getDOMNode(n);
|
|
|
1744 |
}
|
|
|
1745 |
|
|
|
1746 |
domevent = (shorttype in Node.DOM_EVENTS);
|
|
|
1747 |
|
|
|
1748 |
// Captures both DOM events and event plugins.
|
|
|
1749 |
if (domevent) {
|
|
|
1750 |
args[2] = n;
|
|
|
1751 |
}
|
|
|
1752 |
}
|
|
|
1753 |
|
|
|
1754 |
// check for the existance of an event adaptor
|
|
|
1755 |
if (adapt) {
|
|
|
1756 |
handle = adapt.on.apply(Y, args);
|
|
|
1757 |
} else if ((!type) || domevent) {
|
|
|
1758 |
handle = Y.Event._attach(args);
|
|
|
1759 |
}
|
|
|
1760 |
|
|
|
1761 |
}
|
|
|
1762 |
|
|
|
1763 |
if (!handle) {
|
|
|
1764 |
ce = yuievt.events[type] || this.publish(type);
|
|
|
1765 |
handle = ce._on(fn, context, (arguments.length > 3) ? nativeSlice.call(arguments, 3) : null, (after) ? 'after' : true);
|
|
|
1766 |
|
|
|
1767 |
// TODO: More robust regex, accounting for category
|
|
|
1768 |
if (type.indexOf("*:") !== -1) {
|
|
|
1769 |
this._hasSiblings = true;
|
|
|
1770 |
}
|
|
|
1771 |
}
|
|
|
1772 |
|
|
|
1773 |
if (detachcategory) {
|
|
|
1774 |
store[detachcategory] = store[detachcategory] || {};
|
|
|
1775 |
store[detachcategory][type] = store[detachcategory][type] || [];
|
|
|
1776 |
store[detachcategory][type].push(handle);
|
|
|
1777 |
}
|
|
|
1778 |
|
|
|
1779 |
return (yuievt.chain) ? this : handle;
|
|
|
1780 |
|
|
|
1781 |
},
|
|
|
1782 |
|
|
|
1783 |
/**
|
|
|
1784 |
* subscribe to an event
|
|
|
1785 |
* @method subscribe
|
|
|
1786 |
* @deprecated use on
|
|
|
1787 |
*/
|
|
|
1788 |
subscribe: function() {
|
|
|
1789 |
return this.on.apply(this, arguments);
|
|
|
1790 |
},
|
|
|
1791 |
|
|
|
1792 |
/**
|
|
|
1793 |
* Detach one or more listeners the from the specified event
|
|
|
1794 |
* @method detach
|
|
|
1795 |
* @param type {string|Object} Either the handle to the subscriber or the
|
|
|
1796 |
* type of event. If the type
|
|
|
1797 |
* is not specified, it will attempt to remove
|
|
|
1798 |
* the listener from all hosted events.
|
|
|
1799 |
* @param fn {Function} The subscribed function to unsubscribe, if not
|
|
|
1800 |
* supplied, all subscribers will be removed.
|
|
|
1801 |
* @param context {Object} The custom object passed to subscribe. This is
|
|
|
1802 |
* optional, but if supplied will be used to
|
|
|
1803 |
* disambiguate multiple listeners that are the same
|
|
|
1804 |
* (e.g., you subscribe many object using a function
|
|
|
1805 |
* that lives on the prototype)
|
|
|
1806 |
* @return {EventTarget} the host
|
|
|
1807 |
*/
|
|
|
1808 |
detach: function(type, fn, context) {
|
|
|
1809 |
|
|
|
1810 |
var evts = this._yuievt.events,
|
|
|
1811 |
i,
|
|
|
1812 |
Node = Y.Node,
|
|
|
1813 |
isNode = Node && (Y.instanceOf(this, Node));
|
|
|
1814 |
|
|
|
1815 |
// detachAll disabled on the Y instance.
|
|
|
1816 |
if (!type && (this !== Y)) {
|
|
|
1817 |
for (i in evts) {
|
|
|
1818 |
if (evts.hasOwnProperty(i)) {
|
|
|
1819 |
evts[i].detach(fn, context);
|
|
|
1820 |
}
|
|
|
1821 |
}
|
|
|
1822 |
if (isNode) {
|
|
|
1823 |
Y.Event.purgeElement(Node.getDOMNode(this));
|
|
|
1824 |
}
|
|
|
1825 |
|
|
|
1826 |
return this;
|
|
|
1827 |
}
|
|
|
1828 |
|
|
|
1829 |
var parts = _parseType(type, this._yuievt.config.prefix),
|
|
|
1830 |
detachcategory = L.isArray(parts) ? parts[0] : null,
|
|
|
1831 |
shorttype = (parts) ? parts[3] : null,
|
|
|
1832 |
adapt, store = Y.Env.evt.handles, detachhost, cat, args,
|
|
|
1833 |
ce,
|
|
|
1834 |
|
|
|
1835 |
keyDetacher = function(lcat, ltype, host) {
|
|
|
1836 |
var handles = lcat[ltype], ce, i;
|
|
|
1837 |
if (handles) {
|
|
|
1838 |
for (i = handles.length - 1; i >= 0; --i) {
|
|
|
1839 |
ce = handles[i].evt;
|
|
|
1840 |
if (ce.host === host || ce.el === host) {
|
|
|
1841 |
handles[i].detach();
|
|
|
1842 |
}
|
|
|
1843 |
}
|
|
|
1844 |
}
|
|
|
1845 |
};
|
|
|
1846 |
|
|
|
1847 |
if (detachcategory) {
|
|
|
1848 |
|
|
|
1849 |
cat = store[detachcategory];
|
|
|
1850 |
type = parts[1];
|
|
|
1851 |
detachhost = (isNode) ? Y.Node.getDOMNode(this) : this;
|
|
|
1852 |
|
|
|
1853 |
if (cat) {
|
|
|
1854 |
if (type) {
|
|
|
1855 |
keyDetacher(cat, type, detachhost);
|
|
|
1856 |
} else {
|
|
|
1857 |
for (i in cat) {
|
|
|
1858 |
if (cat.hasOwnProperty(i)) {
|
|
|
1859 |
keyDetacher(cat, i, detachhost);
|
|
|
1860 |
}
|
|
|
1861 |
}
|
|
|
1862 |
}
|
|
|
1863 |
|
|
|
1864 |
return this;
|
|
|
1865 |
}
|
|
|
1866 |
|
|
|
1867 |
// If this is an event handle, use it to detach
|
|
|
1868 |
} else if (L.isObject(type) && type.detach) {
|
|
|
1869 |
type.detach();
|
|
|
1870 |
return this;
|
|
|
1871 |
// extra redirection so we catch adaptor events too. take a look at this.
|
|
|
1872 |
} else if (isNode && ((!shorttype) || (shorttype in Node.DOM_EVENTS))) {
|
|
|
1873 |
args = nativeSlice.call(arguments, 0);
|
|
|
1874 |
args[2] = Node.getDOMNode(this);
|
|
|
1875 |
Y.detach.apply(Y, args);
|
|
|
1876 |
return this;
|
|
|
1877 |
}
|
|
|
1878 |
|
|
|
1879 |
adapt = Y.Env.evt.plugins[shorttype];
|
|
|
1880 |
|
|
|
1881 |
// The YUI instance handles DOM events and adaptors
|
|
|
1882 |
if (Y.instanceOf(this, YUI)) {
|
|
|
1883 |
args = nativeSlice.call(arguments, 0);
|
|
|
1884 |
// use the adaptor specific detach code if
|
|
|
1885 |
if (adapt && adapt.detach) {
|
|
|
1886 |
adapt.detach.apply(Y, args);
|
|
|
1887 |
return this;
|
|
|
1888 |
// DOM event fork
|
|
|
1889 |
} else if (!type || (!adapt && Node && (type in Node.DOM_EVENTS))) {
|
|
|
1890 |
args[0] = type;
|
|
|
1891 |
Y.Event.detach.apply(Y.Event, args);
|
|
|
1892 |
return this;
|
|
|
1893 |
}
|
|
|
1894 |
}
|
|
|
1895 |
|
|
|
1896 |
// ce = evts[type];
|
|
|
1897 |
ce = evts[parts[1]];
|
|
|
1898 |
if (ce) {
|
|
|
1899 |
ce.detach(fn, context);
|
|
|
1900 |
}
|
|
|
1901 |
|
|
|
1902 |
return this;
|
|
|
1903 |
},
|
|
|
1904 |
|
|
|
1905 |
/**
|
|
|
1906 |
* detach a listener
|
|
|
1907 |
* @method unsubscribe
|
|
|
1908 |
* @deprecated use detach
|
|
|
1909 |
*/
|
|
|
1910 |
unsubscribe: function() {
|
|
|
1911 |
return this.detach.apply(this, arguments);
|
|
|
1912 |
},
|
|
|
1913 |
|
|
|
1914 |
/**
|
|
|
1915 |
* Removes all listeners from the specified event. If the event type
|
|
|
1916 |
* is not specified, all listeners from all hosted custom events will
|
|
|
1917 |
* be removed.
|
|
|
1918 |
* @method detachAll
|
|
|
1919 |
* @param type {String} The type, or name of the event
|
|
|
1920 |
*/
|
|
|
1921 |
detachAll: function(type) {
|
|
|
1922 |
return this.detach(type);
|
|
|
1923 |
},
|
|
|
1924 |
|
|
|
1925 |
/**
|
|
|
1926 |
* Removes all listeners from the specified event. If the event type
|
|
|
1927 |
* is not specified, all listeners from all hosted custom events will
|
|
|
1928 |
* be removed.
|
|
|
1929 |
* @method unsubscribeAll
|
|
|
1930 |
* @param type {String} The type, or name of the event
|
|
|
1931 |
* @deprecated use detachAll
|
|
|
1932 |
*/
|
|
|
1933 |
unsubscribeAll: function() {
|
|
|
1934 |
return this.detachAll.apply(this, arguments);
|
|
|
1935 |
},
|
|
|
1936 |
|
|
|
1937 |
/**
|
|
|
1938 |
* Creates a new custom event of the specified type. If a custom event
|
|
|
1939 |
* by that name already exists, it will not be re-created. In either
|
|
|
1940 |
* case the custom event is returned.
|
|
|
1941 |
*
|
|
|
1942 |
* @method publish
|
|
|
1943 |
*
|
|
|
1944 |
* @param type {String} the type, or name of the event
|
|
|
1945 |
* @param opts {object} optional config params. Valid properties are:
|
|
|
1946 |
* @param [opts.broadcast=false] {Boolean} whether or not the YUI instance and YUI global
|
|
|
1947 |
* are notified when the event is fired.
|
|
|
1948 |
* @param [opts.bubbles=true] {Boolean} Whether or not this event bubbles. Events can
|
|
|
1949 |
* only bubble if `emitFacade` is true.
|
|
|
1950 |
* @param [opts.context=this] {Object} the default execution context for the listeners.
|
|
|
1951 |
* @param [opts.defaultFn] {Function} the default function to execute when this event
|
|
|
1952 |
* fires if preventDefault was not called.
|
|
|
1953 |
* @param [opts.emitFacade=false] {Boolean} whether or not this event emits a facade.
|
|
|
1954 |
* @param [opts.prefix] {String} the prefix for this targets events, e.g., 'menu' in 'menu:click'.
|
|
|
1955 |
* @param [opts.fireOnce=false] {Boolean} if an event is configured to fire once,
|
|
|
1956 |
* new subscribers after the fire will be notified immediately.
|
|
|
1957 |
* @param [opts.async=false] {Boolean} fireOnce event listeners will fire synchronously
|
|
|
1958 |
* if the event has already fired unless `async` is `true`.
|
|
|
1959 |
* @param [opts.preventable=true] {Boolean} whether or not `preventDefault()` has an effect.
|
|
|
1960 |
* @param [opts.preventedFn] {Function} a function that is executed when `preventDefault()` is called.
|
|
|
1961 |
* @param [opts.queuable=false] {Boolean} whether or not this event can be queued during bubbling.
|
|
|
1962 |
* @param [opts.silent] {Boolean} if silent is true, debug messages are not provided for this event.
|
|
|
1963 |
* @param [opts.stoppedFn] {Function} a function that is executed when stopPropagation is called.
|
|
|
1964 |
* @param [opts.monitored] {Boolean} specifies whether or not this event should send notifications about
|
|
|
1965 |
* when the event has been attached, detached, or published.
|
|
|
1966 |
* @param [opts.type] {String} the event type (valid option if not provided as the first parameter to publish).
|
|
|
1967 |
*
|
|
|
1968 |
* @return {CustomEvent} the custom event
|
|
|
1969 |
*
|
|
|
1970 |
*/
|
|
|
1971 |
publish: function(type, opts) {
|
|
|
1972 |
|
|
|
1973 |
var ret,
|
|
|
1974 |
etState = this._yuievt,
|
|
|
1975 |
etConfig = etState.config,
|
|
|
1976 |
pre = etConfig.prefix;
|
|
|
1977 |
|
|
|
1978 |
if (typeof type === "string") {
|
|
|
1979 |
if (pre) {
|
|
|
1980 |
type = _getType(type, pre);
|
|
|
1981 |
}
|
|
|
1982 |
ret = this._publish(type, etConfig, opts);
|
|
|
1983 |
} else {
|
|
|
1984 |
ret = {};
|
|
|
1985 |
|
|
|
1986 |
Y.each(type, function(v, k) {
|
|
|
1987 |
if (pre) {
|
|
|
1988 |
k = _getType(k, pre);
|
|
|
1989 |
}
|
|
|
1990 |
ret[k] = this._publish(k, etConfig, v || opts);
|
|
|
1991 |
}, this);
|
|
|
1992 |
|
|
|
1993 |
}
|
|
|
1994 |
|
|
|
1995 |
return ret;
|
|
|
1996 |
},
|
|
|
1997 |
|
|
|
1998 |
/**
|
|
|
1999 |
* Returns the fully qualified type, given a short type string.
|
|
|
2000 |
* That is, returns "foo:bar" when given "bar" if "foo" is the configured prefix.
|
|
|
2001 |
*
|
|
|
2002 |
* NOTE: This method, unlike _getType, does no checking of the value passed in, and
|
|
|
2003 |
* is designed to be used with the low level _publish() method, for critical path
|
|
|
2004 |
* implementations which need to fast-track publish for performance reasons.
|
|
|
2005 |
*
|
|
|
2006 |
* @method _getFullType
|
|
|
2007 |
* @private
|
|
|
2008 |
* @param {String} type The short type to prefix
|
|
|
2009 |
* @return {String} The prefixed type, if a prefix is set, otherwise the type passed in
|
|
|
2010 |
*/
|
|
|
2011 |
_getFullType : function(type) {
|
|
|
2012 |
|
|
|
2013 |
var pre = this._yuievt.config.prefix;
|
|
|
2014 |
|
|
|
2015 |
if (pre) {
|
|
|
2016 |
return pre + PREFIX_DELIMITER + type;
|
|
|
2017 |
} else {
|
|
|
2018 |
return type;
|
|
|
2019 |
}
|
|
|
2020 |
},
|
|
|
2021 |
|
|
|
2022 |
/**
|
|
|
2023 |
* The low level event publish implementation. It expects all the massaging to have been done
|
|
|
2024 |
* outside of this method. e.g. the `type` to `fullType` conversion. It's designed to be a fast
|
|
|
2025 |
* path publish, which can be used by critical code paths to improve performance.
|
|
|
2026 |
*
|
|
|
2027 |
* @method _publish
|
|
|
2028 |
* @private
|
|
|
2029 |
* @param {String} fullType The prefixed type of the event to publish.
|
|
|
2030 |
* @param {Object} etOpts The EventTarget specific configuration to mix into the published event.
|
|
|
2031 |
* @param {Object} ceOpts The publish specific configuration to mix into the published event.
|
|
|
2032 |
* @return {CustomEvent} The published event. If called without `etOpts` or `ceOpts`, this will
|
|
|
2033 |
* be the default `CustomEvent` instance, and can be configured independently.
|
|
|
2034 |
*/
|
|
|
2035 |
_publish : function(fullType, etOpts, ceOpts) {
|
|
|
2036 |
|
|
|
2037 |
var ce,
|
|
|
2038 |
etState = this._yuievt,
|
|
|
2039 |
etConfig = etState.config,
|
|
|
2040 |
host = etConfig.host,
|
|
|
2041 |
context = etConfig.context,
|
|
|
2042 |
events = etState.events;
|
|
|
2043 |
|
|
|
2044 |
ce = events[fullType];
|
|
|
2045 |
|
|
|
2046 |
// PERF: Hate to pull the check out of monitor, but trying to keep critical path tight.
|
|
|
2047 |
if ((etConfig.monitored && !ce) || (ce && ce.monitored)) {
|
|
|
2048 |
this._monitor('publish', fullType, {
|
|
|
2049 |
args: arguments
|
|
|
2050 |
});
|
|
|
2051 |
}
|
|
|
2052 |
|
|
|
2053 |
if (!ce) {
|
|
|
2054 |
// Publish event
|
|
|
2055 |
ce = events[fullType] = new Y.CustomEvent(fullType, etOpts);
|
|
|
2056 |
|
|
|
2057 |
if (!etOpts) {
|
|
|
2058 |
ce.host = host;
|
|
|
2059 |
ce.context = context;
|
|
|
2060 |
}
|
|
|
2061 |
}
|
|
|
2062 |
|
|
|
2063 |
if (ceOpts) {
|
|
|
2064 |
mixConfigs(ce, ceOpts, true);
|
|
|
2065 |
}
|
|
|
2066 |
|
|
|
2067 |
return ce;
|
|
|
2068 |
},
|
|
|
2069 |
|
|
|
2070 |
/**
|
|
|
2071 |
* This is the entry point for the event monitoring system.
|
|
|
2072 |
* You can monitor 'attach', 'detach', 'fire', and 'publish'.
|
|
|
2073 |
* When configured, these events generate an event. click ->
|
|
|
2074 |
* click_attach, click_detach, click_publish -- these can
|
|
|
2075 |
* be subscribed to like other events to monitor the event
|
|
|
2076 |
* system. Inividual published events can have monitoring
|
|
|
2077 |
* turned on or off (publish can't be turned off before it
|
|
|
2078 |
* it published) by setting the events 'monitor' config.
|
|
|
2079 |
*
|
|
|
2080 |
* @method _monitor
|
|
|
2081 |
* @param what {String} 'attach', 'detach', 'fire', or 'publish'
|
|
|
2082 |
* @param eventType {String|CustomEvent} The prefixed name of the event being monitored, or the CustomEvent object.
|
|
|
2083 |
* @param o {Object} Information about the event interaction, such as
|
|
|
2084 |
* fire() args, subscription category, publish config
|
|
|
2085 |
* @private
|
|
|
2086 |
*/
|
|
|
2087 |
_monitor: function(what, eventType, o) {
|
|
|
2088 |
var monitorevt, ce, type;
|
|
|
2089 |
|
|
|
2090 |
if (eventType) {
|
|
|
2091 |
if (typeof eventType === "string") {
|
|
|
2092 |
type = eventType;
|
|
|
2093 |
ce = this.getEvent(eventType, true);
|
|
|
2094 |
} else {
|
|
|
2095 |
ce = eventType;
|
|
|
2096 |
type = eventType.type;
|
|
|
2097 |
}
|
|
|
2098 |
|
|
|
2099 |
if ((this._yuievt.config.monitored && (!ce || ce.monitored)) || (ce && ce.monitored)) {
|
|
|
2100 |
monitorevt = type + '_' + what;
|
|
|
2101 |
o.monitored = what;
|
|
|
2102 |
this.fire.call(this, monitorevt, o);
|
|
|
2103 |
}
|
|
|
2104 |
}
|
|
|
2105 |
},
|
|
|
2106 |
|
|
|
2107 |
/**
|
|
|
2108 |
* Fire a custom event by name. The callback functions will be executed
|
|
|
2109 |
* from the context specified when the event was created, and with the
|
|
|
2110 |
* following parameters.
|
|
|
2111 |
*
|
|
|
2112 |
* The first argument is the event type, and any additional arguments are
|
|
|
2113 |
* passed to the listeners as parameters. If the first of these is an
|
|
|
2114 |
* object literal, and the event is configured to emit an event facade,
|
|
|
2115 |
* that object is mixed into the event facade and the facade is provided
|
|
|
2116 |
* in place of the original object.
|
|
|
2117 |
*
|
|
|
2118 |
* If the custom event object hasn't been created, then the event hasn't
|
|
|
2119 |
* been published and it has no subscribers. For performance sake, we
|
|
|
2120 |
* immediate exit in this case. This means the event won't bubble, so
|
|
|
2121 |
* if the intention is that a bubble target be notified, the event must
|
|
|
2122 |
* be published on this object first.
|
|
|
2123 |
*
|
|
|
2124 |
* @method fire
|
|
|
2125 |
* @param type {String|Object} The type of the event, or an object that contains
|
|
|
2126 |
* a 'type' property.
|
|
|
2127 |
* @param arguments {Object*} an arbitrary set of parameters to pass to
|
|
|
2128 |
* the handler. If the first of these is an object literal and the event is
|
|
|
2129 |
* configured to emit an event facade, the event facade will replace that
|
|
|
2130 |
* parameter after the properties the object literal contains are copied to
|
|
|
2131 |
* the event facade.
|
|
|
2132 |
* @return {Boolean} True if the whole lifecycle of the event went through,
|
|
|
2133 |
* false if at any point the event propagation was halted.
|
|
|
2134 |
*/
|
|
|
2135 |
fire: function(type) {
|
|
|
2136 |
|
|
|
2137 |
var typeIncluded = (typeof type === "string"),
|
|
|
2138 |
argCount = arguments.length,
|
|
|
2139 |
t = type,
|
|
|
2140 |
yuievt = this._yuievt,
|
|
|
2141 |
etConfig = yuievt.config,
|
|
|
2142 |
pre = etConfig.prefix,
|
|
|
2143 |
ret,
|
|
|
2144 |
ce,
|
|
|
2145 |
ce2,
|
|
|
2146 |
args;
|
|
|
2147 |
|
|
|
2148 |
if (typeIncluded && argCount <= 3) {
|
|
|
2149 |
|
|
|
2150 |
// PERF: Try to avoid slice/iteration for the common signatures
|
|
|
2151 |
|
|
|
2152 |
// Most common
|
|
|
2153 |
if (argCount === 2) {
|
|
|
2154 |
args = [arguments[1]]; // fire("foo", {})
|
|
|
2155 |
} else if (argCount === 3) {
|
|
|
2156 |
args = [arguments[1], arguments[2]]; // fire("foo", {}, opts)
|
|
|
2157 |
} else {
|
|
|
2158 |
args = []; // fire("foo")
|
|
|
2159 |
}
|
|
|
2160 |
|
|
|
2161 |
} else {
|
|
|
2162 |
args = nativeSlice.call(arguments, ((typeIncluded) ? 1 : 0));
|
|
|
2163 |
}
|
|
|
2164 |
|
|
|
2165 |
if (!typeIncluded) {
|
|
|
2166 |
t = (type && type.type);
|
|
|
2167 |
}
|
|
|
2168 |
|
|
|
2169 |
if (pre) {
|
|
|
2170 |
t = _getType(t, pre);
|
|
|
2171 |
}
|
|
|
2172 |
|
|
|
2173 |
ce = yuievt.events[t];
|
|
|
2174 |
|
|
|
2175 |
if (this._hasSiblings) {
|
|
|
2176 |
ce2 = this.getSibling(t, ce);
|
|
|
2177 |
|
|
|
2178 |
if (ce2 && !ce) {
|
|
|
2179 |
ce = this.publish(t);
|
|
|
2180 |
}
|
|
|
2181 |
}
|
|
|
2182 |
|
|
|
2183 |
// PERF: trying to avoid function call, since this is a critical path
|
|
|
2184 |
if ((etConfig.monitored && (!ce || ce.monitored)) || (ce && ce.monitored)) {
|
|
|
2185 |
this._monitor('fire', (ce || t), {
|
|
|
2186 |
args: args
|
|
|
2187 |
});
|
|
|
2188 |
}
|
|
|
2189 |
|
|
|
2190 |
// this event has not been published or subscribed to
|
|
|
2191 |
if (!ce) {
|
|
|
2192 |
if (yuievt.hasTargets) {
|
|
|
2193 |
return this.bubble({ type: t }, args, this);
|
|
|
2194 |
}
|
|
|
2195 |
|
|
|
2196 |
// otherwise there is nothing to be done
|
|
|
2197 |
ret = true;
|
|
|
2198 |
} else {
|
|
|
2199 |
|
|
|
2200 |
if (ce2) {
|
|
|
2201 |
ce.sibling = ce2;
|
|
|
2202 |
}
|
|
|
2203 |
|
|
|
2204 |
ret = ce._fire(args);
|
|
|
2205 |
}
|
|
|
2206 |
|
|
|
2207 |
return (yuievt.chain) ? this : ret;
|
|
|
2208 |
},
|
|
|
2209 |
|
|
|
2210 |
getSibling: function(type, ce) {
|
|
|
2211 |
var ce2;
|
|
|
2212 |
|
|
|
2213 |
// delegate to *:type events if there are subscribers
|
|
|
2214 |
if (type.indexOf(PREFIX_DELIMITER) > -1) {
|
|
|
2215 |
type = _wildType(type);
|
|
|
2216 |
ce2 = this.getEvent(type, true);
|
|
|
2217 |
if (ce2) {
|
|
|
2218 |
ce2.applyConfig(ce);
|
|
|
2219 |
ce2.bubbles = false;
|
|
|
2220 |
ce2.broadcast = 0;
|
|
|
2221 |
}
|
|
|
2222 |
}
|
|
|
2223 |
|
|
|
2224 |
return ce2;
|
|
|
2225 |
},
|
|
|
2226 |
|
|
|
2227 |
/**
|
|
|
2228 |
* Returns the custom event of the provided type has been created, a
|
|
|
2229 |
* falsy value otherwise
|
|
|
2230 |
* @method getEvent
|
|
|
2231 |
* @param type {String} the type, or name of the event
|
|
|
2232 |
* @param prefixed {String} if true, the type is prefixed already
|
|
|
2233 |
* @return {CustomEvent} the custom event or null
|
|
|
2234 |
*/
|
|
|
2235 |
getEvent: function(type, prefixed) {
|
|
|
2236 |
var pre, e;
|
|
|
2237 |
|
|
|
2238 |
if (!prefixed) {
|
|
|
2239 |
pre = this._yuievt.config.prefix;
|
|
|
2240 |
type = (pre) ? _getType(type, pre) : type;
|
|
|
2241 |
}
|
|
|
2242 |
e = this._yuievt.events;
|
|
|
2243 |
return e[type] || null;
|
|
|
2244 |
},
|
|
|
2245 |
|
|
|
2246 |
/**
|
|
|
2247 |
* Subscribe to a custom event hosted by this object. The
|
|
|
2248 |
* supplied callback will execute after any listeners add
|
|
|
2249 |
* via the subscribe method, and after the default function,
|
|
|
2250 |
* if configured for the event, has executed.
|
|
|
2251 |
*
|
|
|
2252 |
* @method after
|
|
|
2253 |
* @param {String} type The name of the event
|
|
|
2254 |
* @param {Function} fn The callback to execute in response to the event
|
|
|
2255 |
* @param {Object} [context] Override `this` object in callback
|
|
|
2256 |
* @param {Any} [arg*] 0..n additional arguments to supply to the subscriber
|
|
|
2257 |
* @return {EventHandle} A subscription handle capable of detaching the
|
|
|
2258 |
* subscription
|
|
|
2259 |
*/
|
|
|
2260 |
after: function(type, fn) {
|
|
|
2261 |
|
|
|
2262 |
var a = nativeSlice.call(arguments, 0);
|
|
|
2263 |
|
|
|
2264 |
switch (L.type(type)) {
|
|
|
2265 |
case 'function':
|
|
|
2266 |
return Y.Do.after.apply(Y.Do, arguments);
|
|
|
2267 |
case 'array':
|
|
|
2268 |
// YArray.each(a[0], function(v) {
|
|
|
2269 |
// v = AFTER_PREFIX + v;
|
|
|
2270 |
// });
|
|
|
2271 |
// break;
|
|
|
2272 |
case 'object':
|
|
|
2273 |
a[0]._after = true;
|
|
|
2274 |
break;
|
|
|
2275 |
default:
|
|
|
2276 |
a[0] = AFTER_PREFIX + type;
|
|
|
2277 |
}
|
|
|
2278 |
|
|
|
2279 |
return this.on.apply(this, a);
|
|
|
2280 |
|
|
|
2281 |
},
|
|
|
2282 |
|
|
|
2283 |
/**
|
|
|
2284 |
* Executes the callback before a DOM event, custom event
|
|
|
2285 |
* or method. If the first argument is a function, it
|
|
|
2286 |
* is assumed the target is a method. For DOM and custom
|
|
|
2287 |
* events, this is an alias for Y.on.
|
|
|
2288 |
*
|
|
|
2289 |
* For DOM and custom events:
|
|
|
2290 |
* type, callback, context, 0-n arguments
|
|
|
2291 |
*
|
|
|
2292 |
* For methods:
|
|
|
2293 |
* callback, object (method host), methodName, context, 0-n arguments
|
|
|
2294 |
*
|
|
|
2295 |
* @method before
|
|
|
2296 |
* @return detach handle
|
|
|
2297 |
*/
|
|
|
2298 |
before: function() {
|
|
|
2299 |
return this.on.apply(this, arguments);
|
|
|
2300 |
}
|
|
|
2301 |
|
|
|
2302 |
};
|
|
|
2303 |
|
|
|
2304 |
Y.EventTarget = ET;
|
|
|
2305 |
|
|
|
2306 |
// make Y an event target
|
|
|
2307 |
Y.mix(Y, ET.prototype);
|
|
|
2308 |
ET.call(Y, { bubbles: false });
|
|
|
2309 |
|
|
|
2310 |
YUI.Env.globalEvents = YUI.Env.globalEvents || new ET();
|
|
|
2311 |
|
|
|
2312 |
/**
|
|
|
2313 |
* Hosts YUI page level events. This is where events bubble to
|
|
|
2314 |
* when the broadcast config is set to 2. This property is
|
|
|
2315 |
* only available if the custom event module is loaded.
|
|
|
2316 |
* @property Global
|
|
|
2317 |
* @type EventTarget
|
|
|
2318 |
* @for YUI
|
|
|
2319 |
*/
|
|
|
2320 |
Y.Global = YUI.Env.globalEvents;
|
|
|
2321 |
|
|
|
2322 |
// @TODO implement a global namespace function on Y.Global?
|
|
|
2323 |
|
|
|
2324 |
/**
|
|
|
2325 |
`Y.on()` can do many things:
|
|
|
2326 |
|
|
|
2327 |
<ul>
|
|
|
2328 |
<li>Subscribe to custom events `publish`ed and `fire`d from Y</li>
|
|
|
2329 |
<li>Subscribe to custom events `publish`ed with `broadcast` 1 or 2 and
|
|
|
2330 |
`fire`d from any object in the YUI instance sandbox</li>
|
|
|
2331 |
<li>Subscribe to DOM events</li>
|
|
|
2332 |
<li>Subscribe to the execution of a method on any object, effectively
|
|
|
2333 |
treating that method as an event</li>
|
|
|
2334 |
</ul>
|
|
|
2335 |
|
|
|
2336 |
For custom event subscriptions, pass the custom event name as the first argument
|
|
|
2337 |
and callback as the second. The `this` object in the callback will be `Y` unless
|
|
|
2338 |
an override is passed as the third argument.
|
|
|
2339 |
|
|
|
2340 |
Y.on('io:complete', function () {
|
|
|
2341 |
Y.MyApp.updateStatus('Transaction complete');
|
|
|
2342 |
});
|
|
|
2343 |
|
|
|
2344 |
To subscribe to DOM events, pass the name of a DOM event as the first argument
|
|
|
2345 |
and a CSS selector string as the third argument after the callback function.
|
|
|
2346 |
Alternately, the third argument can be a `Node`, `NodeList`, `HTMLElement`,
|
|
|
2347 |
array, or simply omitted (the default is the `window` object).
|
|
|
2348 |
|
|
|
2349 |
Y.on('click', function (e) {
|
|
|
2350 |
e.preventDefault();
|
|
|
2351 |
|
|
|
2352 |
// proceed with ajax form submission
|
|
|
2353 |
var url = this.get('action');
|
|
|
2354 |
...
|
|
|
2355 |
}, '#my-form');
|
|
|
2356 |
|
|
|
2357 |
The `this` object in DOM event callbacks will be the `Node` targeted by the CSS
|
|
|
2358 |
selector or other identifier.
|
|
|
2359 |
|
|
|
2360 |
`on()` subscribers for DOM events or custom events `publish`ed with a
|
|
|
2361 |
`defaultFn` can prevent the default behavior with `e.preventDefault()` from the
|
|
|
2362 |
event object passed as the first parameter to the subscription callback.
|
|
|
2363 |
|
|
|
2364 |
To subscribe to the execution of an object method, pass arguments corresponding to the call signature for
|
|
|
2365 |
<a href="../classes/Do.html#methods_before">`Y.Do.before(...)`</a>.
|
|
|
2366 |
|
|
|
2367 |
NOTE: The formal parameter list below is for events, not for function
|
|
|
2368 |
injection. See `Y.Do.before` for that signature.
|
|
|
2369 |
|
|
|
2370 |
@method on
|
|
|
2371 |
@param {String} type DOM or custom event name
|
|
|
2372 |
@param {Function} fn The callback to execute in response to the event
|
|
|
2373 |
@param {Object} [context] Override `this` object in callback
|
|
|
2374 |
@param {Any} [arg*] 0..n additional arguments to supply to the subscriber
|
|
|
2375 |
@return {EventHandle} A subscription handle capable of detaching the
|
|
|
2376 |
subscription
|
|
|
2377 |
@see Do.before
|
|
|
2378 |
@for YUI
|
|
|
2379 |
**/
|
|
|
2380 |
|
|
|
2381 |
/**
|
|
|
2382 |
Listen for an event one time. Equivalent to `on()`, except that
|
|
|
2383 |
the listener is immediately detached when executed.
|
|
|
2384 |
|
|
|
2385 |
See the <a href="#methods_on">`on()` method</a> for additional subscription
|
|
|
2386 |
options.
|
|
|
2387 |
|
|
|
2388 |
@see on
|
|
|
2389 |
@method once
|
|
|
2390 |
@param {String} type DOM or custom event name
|
|
|
2391 |
@param {Function} fn The callback to execute in response to the event
|
|
|
2392 |
@param {Object} [context] Override `this` object in callback
|
|
|
2393 |
@param {Any} [arg*] 0..n additional arguments to supply to the subscriber
|
|
|
2394 |
@return {EventHandle} A subscription handle capable of detaching the
|
|
|
2395 |
subscription
|
|
|
2396 |
@for YUI
|
|
|
2397 |
**/
|
|
|
2398 |
|
|
|
2399 |
/**
|
|
|
2400 |
Listen for an event one time. Equivalent to `once()`, except, like `after()`,
|
|
|
2401 |
the subscription callback executes after all `on()` subscribers and the event's
|
|
|
2402 |
`defaultFn` (if configured) have executed. Like `after()` if any `on()` phase
|
|
|
2403 |
subscriber calls `e.preventDefault()`, neither the `defaultFn` nor the `after()`
|
|
|
2404 |
subscribers will execute.
|
|
|
2405 |
|
|
|
2406 |
The listener is immediately detached when executed.
|
|
|
2407 |
|
|
|
2408 |
See the <a href="#methods_on">`on()` method</a> for additional subscription
|
|
|
2409 |
options.
|
|
|
2410 |
|
|
|
2411 |
@see once
|
|
|
2412 |
@method onceAfter
|
|
|
2413 |
@param {String} type The custom event name
|
|
|
2414 |
@param {Function} fn The callback to execute in response to the event
|
|
|
2415 |
@param {Object} [context] Override `this` object in callback
|
|
|
2416 |
@param {Any} [arg*] 0..n additional arguments to supply to the subscriber
|
|
|
2417 |
@return {EventHandle} A subscription handle capable of detaching the
|
|
|
2418 |
subscription
|
|
|
2419 |
@for YUI
|
|
|
2420 |
**/
|
|
|
2421 |
|
|
|
2422 |
/**
|
|
|
2423 |
Like `on()`, this method creates a subscription to a custom event or to the
|
|
|
2424 |
execution of a method on an object.
|
|
|
2425 |
|
|
|
2426 |
For events, `after()` subscribers are executed after the event's
|
|
|
2427 |
`defaultFn` unless `e.preventDefault()` was called from an `on()` subscriber.
|
|
|
2428 |
|
|
|
2429 |
See the <a href="#methods_on">`on()` method</a> for additional subscription
|
|
|
2430 |
options.
|
|
|
2431 |
|
|
|
2432 |
NOTE: The subscription signature shown is for events, not for function
|
|
|
2433 |
injection. See <a href="../classes/Do.html#methods_after">`Y.Do.after`</a>
|
|
|
2434 |
for that signature.
|
|
|
2435 |
|
|
|
2436 |
@see on
|
|
|
2437 |
@see Do.after
|
|
|
2438 |
@method after
|
|
|
2439 |
@param {String} type The custom event name
|
|
|
2440 |
@param {Function} fn The callback to execute in response to the event
|
|
|
2441 |
@param {Object} [context] Override `this` object in callback
|
|
|
2442 |
@param {Any} [args*] 0..n additional arguments to supply to the subscriber
|
|
|
2443 |
@return {EventHandle} A subscription handle capable of detaching the
|
|
|
2444 |
subscription
|
|
|
2445 |
@for YUI
|
|
|
2446 |
**/
|
|
|
2447 |
|
|
|
2448 |
|
|
|
2449 |
}, '3.18.1', {"requires": ["oop"]});
|