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-/*
-Copyright (c) 2006, Yahoo! Inc. All rights reserved.
-Code licensed under the BSD License:
-http://developer.yahoo.net/yui/license.txt
-version: 0.12.2
-*/
-/**
- * The CustomEvent class lets you define events for your application
- * that can be subscribed to by one or more independent component.
- *
- * @param {String} type The type of event, which is passed to the callback
- * when the event fires
- * @param {Object} oScope The context the event will fire from. "this" will
- * refer to this object in the callback. Default value:
- * the window object. The listener can override this.
- * @param {boolean} silent pass true to prevent the event from writing to
- * the debugsystem
- * @param {int} signature the signature that the custom event subscriber
- * will receive. YAHOO.util.CustomEvent.LIST or
- * YAHOO.util.CustomEvent.FLAT. The default is
- * YAHOO.util.CustomEvent.LIST.
- * @namespace YAHOO.util
- * @class CustomEvent
- * @constructor
- */
-YAHOO.util.CustomEvent = function(type, oScope, silent, signature) {
-
- /**
- * The type of event, returned to subscribers when the event fires
- * @property type
- * @type string
- */
- this.type = type;
-
- /**
- * The scope the the event will fire from by default. Defaults to the window
- * obj
- * @property scope
- * @type object
- */
- this.scope = oScope || window;
-
- /**
- * By default all custom events are logged in the debug build, set silent
- * to true to disable debug outpu for this event.
- * @property silent
- * @type boolean
- */
- this.silent = silent;
-
- /**
- * Custom events support two styles of arguments provided to the event
- * subscribers.
- * <ul>
- * <li>YAHOO.util.CustomEvent.LIST:
- * <ul>
- * <li>param1: event name</li>
- * <li>param2: array of arguments sent to fire</li>
- * <li>param3: <optional> a custom object supplied by the subscriber</li>
- * </ul>
- * </li>
- * <li>YAHOO.util.CustomEvent.FLAT
- * <ul>
- * <li>param1: the first argument passed to fire. If you need to
- * pass multiple parameters, use and array or object literal</li>
- * <li>param2: <optional> a custom object supplied by the subscriber</li>
- * </ul>
- * </li>
- * </ul>
- * @property signature
- * @type int
- */
- this.signature = signature || YAHOO.util.CustomEvent.LIST;
-
- /**
- * The subscribers to this event
- * @property subscribers
- * @type Subscriber[]
- */
- this.subscribers = [];
-
- if (!this.silent) {
- }
-
- var onsubscribeType = "_YUICEOnSubscribe";
-
- // Only add subscribe events for events that are not generated by
- // CustomEvent
- if (type !== onsubscribeType) {
-
- /**
- * Custom events provide a custom event that fires whenever there is
- * a new subscriber to the event. This provides an opportunity to
- * handle the case where there is a non-repeating event that has
- * already fired has a new subscriber.
- *
- * @event subscribeEvent
- * @type YAHOO.util.CustomEvent
- * @param {Function} fn The function to execute
- * @param {Object} obj An object to be passed along when the event
- * fires
- * @param {boolean|Object} override If true, the obj passed in becomes
- * the execution scope of the listener.
- * if an object, that object becomes the
- * the execution scope.
- */
- this.subscribeEvent =
- new YAHOO.util.CustomEvent(onsubscribeType, this, true);
-
- }
-};
-
-/**
- * Subscriber listener sigature constant. The LIST type returns three
- * parameters: the event type, the array of args passed to fire, and
- * the optional custom object
- * @property YAHOO.util.CustomEvent.LIST
- * @static
- * @type int
- */
-YAHOO.util.CustomEvent.LIST = 0;
-
-/**
- * Subscriber listener sigature constant. The FLAT type returns two
- * parameters: the first argument passed to fire and the optional
- * custom object
- * @property YAHOO.util.CustomEvent.FLAT
- * @static
- * @type int
- */
-YAHOO.util.CustomEvent.FLAT = 1;
-
-YAHOO.util.CustomEvent.prototype = {
-
- /**
- * Subscribes the caller to this event
- * @method subscribe
- * @param {Function} fn The function to execute
- * @param {Object} obj An object to be passed along when the event
- * fires
- * @param {boolean|Object} override If true, the obj passed in becomes
- * the execution scope of the listener.
- * if an object, that object becomes the
- * the execution scope.
- */
- subscribe: function(fn, obj, override) {
- if (this.subscribeEvent) {
- this.subscribeEvent.fire(fn, obj, override);
- }
-
- this.subscribers.push( new YAHOO.util.Subscriber(fn, obj, override) );
- },
-
- /**
- * Unsubscribes the caller from this event
- * @method unsubscribe
- * @param {Function} fn The function to execute
- * @param {Object} obj The custom object passed to subscribe (optional)
- * @return {boolean} True if the subscriber was found and detached.
- */
- unsubscribe: function(fn, obj) {
- var found = false;
- for (var i=0, len=this.subscribers.length; i<len; ++i) {
- var s = this.subscribers[i];
- if (s && s.contains(fn, obj)) {
- this._delete(i);
- found = true;
- }
- }
-
- return found;
- },
-
- /**
- * Notifies the subscribers. The callback functions will be executed
- * from the scope specified when the event was created, and with the
- * following parameters:
- * <ul>
- * <li>The type of event</li>
- * <li>All of the arguments fire() was executed with as an array</li>
- * <li>The custom object (if any) that was passed into the subscribe()
- * method</li>
- * </ul>
- * @method fire
- * @param {Object*} arguments an arbitrary set of parameters to pass to
- * the handler.
- * @return {boolean} false if one of the subscribers returned false,
- * true otherwise
- */
- fire: function() {
- var len=this.subscribers.length;
- if (!len && this.silent) {
- return true;
- }
-
- var args=[], ret=true, i;
-
- for (i=0; i<arguments.length; ++i) {
- args.push(arguments[i]);
- }
-
- var argslength = args.length;
-
- if (!this.silent) {
- }
-
- for (i=0; i<len; ++i) {
- var s = this.subscribers[i];
- if (s) {
- if (!this.silent) {
- }
-
- var scope = s.getScope(this.scope);
-
- if (this.signature == YAHOO.util.CustomEvent.FLAT) {
- var param = null;
- if (args.length > 0) {
- param = args[0];
- }
- ret = s.fn.call(scope, param, s.obj);
- } else {
- ret = s.fn.call(scope, this.type, args, s.obj);
- }
- if (false === ret) {
- if (!this.silent) {
- }
-
- //break;
- return false;
- }
- }
- }
-
- return true;
- },
-
- /**
- * Removes all listeners
- * @method unsubscribeAll
- */
- unsubscribeAll: function() {
- for (var i=0, len=this.subscribers.length; i<len; ++i) {
- this._delete(len - 1 - i);
- }
- },
-
- /**
- * @method _delete
- * @private
- */
- _delete: function(index) {
- var s = this.subscribers[index];
- if (s) {
- delete s.fn;
- delete s.obj;
- }
-
- // delete this.subscribers[index];
- this.subscribers.splice(index, 1);
- },
-
- /**
- * @method toString
- */
- toString: function() {
- return "CustomEvent: " + "'" + this.type + "', " +
- "scope: " + this.scope;
-
- }
-};
-
-/////////////////////////////////////////////////////////////////////
-
-/**
- * Stores the subscriber information to be used when the event fires.
- * @param {Function} fn The function to execute
- * @param {Object} obj An object to be passed along when the event fires
- * @param {boolean} override If true, the obj passed in becomes the execution
- * scope of the listener
- * @class Subscriber
- * @constructor
- */
-YAHOO.util.Subscriber = function(fn, obj, override) {
-
- /**
- * The callback that will be execute when the event fires
- * @property fn
- * @type function
- */
- this.fn = fn;
-
- /**
- * An optional custom object that will passed to the callback when
- * the event fires
- * @property obj
- * @type object
- */
- this.obj = obj || null;
-
- /**
- * The default execution scope for the event listener is defined when the
- * event is created (usually the object which contains the event).
- * By setting override to true, the execution scope becomes the custom
- * object passed in by the subscriber. If override is an object, that
- * object becomes the scope.
- * @property override
- * @type boolean|object
- */
- this.override = override;
-
-};
-
-/**
- * Returns the execution scope for this listener. If override was set to true
- * the custom obj will be the scope. If override is an object, that is the
- * scope, otherwise the default scope will be used.
- * @method getScope
- * @param {Object} defaultScope the scope to use if this listener does not
- * override it.
- */
-YAHOO.util.Subscriber.prototype.getScope = function(defaultScope) {
- if (this.override) {
- if (this.override === true) {
- return this.obj;
- } else {
- return this.override;
- }
- }
- return defaultScope;
-};
-
-/**
- * Returns true if the fn and obj match this objects properties.
- * Used by the unsubscribe method to match the right subscriber.
- *
- * @method contains
- * @param {Function} fn the function to execute
- * @param {Object} obj an object to be passed along when the event fires
- * @return {boolean} true if the supplied arguments match this
- * subscriber's signature.
- */
-YAHOO.util.Subscriber.prototype.contains = function(fn, obj) {
- if (obj) {
- return (this.fn == fn && this.obj == obj);
- } else {
- return (this.fn == fn);
- }
-};
-
-/**
- * @method toString
- */
-YAHOO.util.Subscriber.prototype.toString = function() {
- return "Subscriber { obj: " + (this.obj || "") +
- ", override: " + (this.override || "no") + " }";
-};
-
-/**
- * The Event Utility provides utilities for managing DOM Events and tools
- * for building event systems
- *
- * @module event
- * @title Event Utility
- * @namespace YAHOO.util
- * @requires yahoo
- */
-
-// The first instance of Event will win if it is loaded more than once.
-if (!YAHOO.util.Event) {
-
-/**
- * The event utility provides functions to add and remove event listeners,
- * event cleansing. It also tries to automatically remove listeners it
- * registers during the unload event.
- *
- * @class Event
- * @static
- */
- YAHOO.util.Event = function() {
-
- /**
- * True after the onload event has fired
- * @property loadComplete
- * @type boolean
- * @static
- * @private
- */
- var loadComplete = false;
-
- /**
- * Cache of wrapped listeners
- * @property listeners
- * @type array
- * @static
- * @private
- */
- var listeners = [];
-
- /**
- * User-defined unload function that will be fired before all events
- * are detached
- * @property unloadListeners
- * @type array
- * @static
- * @private
- */
- var unloadListeners = [];
-
- /**
- * Cache of DOM0 event handlers to work around issues with DOM2 events
- * in Safari
- * @property legacyEvents
- * @static
- * @private
- */
- var legacyEvents = [];
-
- /**
- * Listener stack for DOM0 events
- * @property legacyHandlers
- * @static
- * @private
- */
- var legacyHandlers = [];
-
- /**
- * The number of times to poll after window.onload. This number is
- * increased if additional late-bound handlers are requested after
- * the page load.
- * @property retryCount
- * @static
- * @private
- */
- var retryCount = 0;
-
- /**
- * onAvailable listeners
- * @property onAvailStack
- * @static
- * @private
- */
- var onAvailStack = [];
-
- /**
- * Lookup table for legacy events
- * @property legacyMap
- * @static
- * @private
- */
- var legacyMap = [];
-
- /**
- * Counter for auto id generation
- * @property counter
- * @static
- * @private
- */
- var counter = 0;
-
- return { // PREPROCESS
-
- /**
- * The number of times we should look for elements that are not
- * in the DOM at the time the event is requested after the document
- * has been loaded. The default is 200@amp;50 ms, so it will poll
- * for 10 seconds or until all outstanding handlers are bound
- * (whichever comes first).
- * @property POLL_RETRYS
- * @type int
- * @static
- * @final
- */
- POLL_RETRYS: 200,
-
- /**
- * The poll interval in milliseconds
- * @property POLL_INTERVAL
- * @type int
- * @static
- * @final
- */
- POLL_INTERVAL: 20,
-
- /**
- * Element to bind, int constant
- * @property EL
- * @type int
- * @static
- * @final
- */
- EL: 0,
-
- /**
- * Type of event, int constant
- * @property TYPE
- * @type int
- * @static
- * @final
- */
- TYPE: 1,
-
- /**
- * Function to execute, int constant
- * @property FN
- * @type int
- * @static
- * @final
- */
- FN: 2,
-
- /**
- * Function wrapped for scope correction and cleanup, int constant
- * @property WFN
- * @type int
- * @static
- * @final
- */
- WFN: 3,
-
- /**
- * Object passed in by the user that will be returned as a
- * parameter to the callback, int constant
- * @property OBJ
- * @type int
- * @static
- * @final
- */
- OBJ: 3,
-
- /**
- * Adjusted scope, either the element we are registering the event
- * on or the custom object passed in by the listener, int constant
- * @property ADJ_SCOPE
- * @type int
- * @static
- * @final
- */
- ADJ_SCOPE: 4,
-
- /**
- * Safari detection is necessary to work around the preventDefault
- * bug that makes it so you can't cancel a href click from the
- * handler. There is not a capabilities check we can use here.
- * @property isSafari
- * @private
- * @static
- */
- isSafari: (/Safari|Konqueror|KHTML/gi).test(navigator.userAgent),
-
- /**
- * IE detection needed to properly calculate pageX and pageY.
- * capabilities checking didn't seem to work because another
- * browser that does not provide the properties have the values
- * calculated in a different manner than IE.
- * @property isIE
- * @private
- * @static
- */
- isIE: (!this.isSafari && !navigator.userAgent.match(/opera/gi) &&
- navigator.userAgent.match(/msie/gi)),
-
- /**
- * poll handle
- * @property _interval
- * @private
- */
- _interval: null,
-
- /**
- * @method startInterval
- * @static
- * @private
- */
- startInterval: function() {
- if (!this._interval) {
- var self = this;
- var callback = function() { self._tryPreloadAttach(); };
- this._interval = setInterval(callback, this.POLL_INTERVAL);
- // this.timeout = setTimeout(callback, i);
- }
- },
-
- /**
- * Executes the supplied callback when the item with the supplied
- * id is found. This is meant to be used to execute behavior as
- * soon as possible as the page loads. If you use this after the
- * initial page load it will poll for a fixed time for the element.
- * The number of times it will poll and the frequency are
- * configurable. By default it will poll for 10 seconds.
- *
- * @method onAvailable
- *
- * @param {string} p_id the id of the element to look for.
- * @param {function} p_fn what to execute when the element is found.
- * @param {object} p_obj an optional object to be passed back as
- * a parameter to p_fn.
- * @param {boolean} p_override If set to true, p_fn will execute
- * in the scope of p_obj
- *
- * @static
- */
- onAvailable: function(p_id, p_fn, p_obj, p_override) {
- onAvailStack.push( { id: p_id,
- fn: p_fn,
- obj: p_obj,
- override: p_override,
- checkReady: false } );
-
- retryCount = this.POLL_RETRYS;
- this.startInterval();
- },
-
- /**
- * Works the same way as onAvailable, but additionally checks the
- * state of sibling elements to determine if the content of the
- * available element is safe to modify.
- *
- * @method onContentReady
- *
- * @param {string} p_id the id of the element to look for.
- * @param {function} p_fn what to execute when the element is ready.
- * @param {object} p_obj an optional object to be passed back as
- * a parameter to p_fn.
- * @param {boolean} p_override If set to true, p_fn will execute
- * in the scope of p_obj
- *
- * @static
- */
- onContentReady: function(p_id, p_fn, p_obj, p_override) {
- onAvailStack.push( { id: p_id,
- fn: p_fn,
- obj: p_obj,
- override: p_override,
- checkReady: true } );
-
- retryCount = this.POLL_RETRYS;
- this.startInterval();
- },
-
- /**
- * Appends an event handler
- *
- * @method addListener
- *
- * @param {Object} el The html element to assign the
- * event to
- * @param {String} sType The type of event to append
- * @param {Function} fn The method the event invokes
- * @param {Object} obj An arbitrary object that will be
- * passed as a parameter to the handler
- * @param {boolean} override If true, the obj passed in becomes
- * the execution scope of the listener
- * @return {boolean} True if the action was successful or defered,
- * false if one or more of the elements
- * could not have the listener attached,
- * or if the operation throws an exception.
- * @static
- */
- addListener: function(el, sType, fn, obj, override) {
-
- if (!fn || !fn.call) {
- return false;
- }
-
- // The el argument can be an array of elements or element ids.
- if ( this._isValidCollection(el)) {
- var ok = true;
- for (var i=0,len=el.length; i<len; ++i) {
- ok = this.on(el[i],
- sType,
- fn,
- obj,
- override) && ok;
- }
- return ok;
-
- } else if (typeof el == "string") {
- var oEl = this.getEl(el);
- // If the el argument is a string, we assume it is
- // actually the id of the element. If the page is loaded
- // we convert el to the actual element, otherwise we
- // defer attaching the event until onload event fires
-
- // check to see if we need to delay hooking up the event
- // until after the page loads.
- if (oEl) {
- el = oEl;
- } else {
- // defer adding the event until the element is available
- this.onAvailable(el, function() {
- YAHOO.util.Event.on(el, sType, fn, obj, override);
- });
-
- return true;
- }
- }
-
- // Element should be an html element or an array if we get
- // here.
- if (!el) {
- return false;
- }
-
- // we need to make sure we fire registered unload events
- // prior to automatically unhooking them. So we hang on to
- // these instead of attaching them to the window and fire the
- // handles explicitly during our one unload event.
- if ("unload" == sType && obj !== this) {
- unloadListeners[unloadListeners.length] =
- [el, sType, fn, obj, override];
- return true;
- }
-
-
- // if the user chooses to override the scope, we use the custom
- // object passed in, otherwise the executing scope will be the
- // HTML element that the event is registered on
- var scope = el;
- if (override) {
- if (override === true) {
- scope = obj;
- } else {
- scope = override;
- }
- }
-
- // wrap the function so we can return the obj object when
- // the event fires;
- var wrappedFn = function(e) {
- return fn.call(scope, YAHOO.util.Event.getEvent(e),
- obj);
- };
-
- var li = [el, sType, fn, wrappedFn, scope];
- var index = listeners.length;
- // cache the listener so we can try to automatically unload
- listeners[index] = li;
-
- if (this.useLegacyEvent(el, sType)) {
- var legacyIndex = this.getLegacyIndex(el, sType);
-
- // Add a new dom0 wrapper if one is not detected for this
- // element
- if ( legacyIndex == -1 ||
- el != legacyEvents[legacyIndex][0] ) {
-
- legacyIndex = legacyEvents.length;
- legacyMap[el.id + sType] = legacyIndex;
-
- // cache the signature for the DOM0 event, and
- // include the existing handler for the event, if any
- legacyEvents[legacyIndex] =
- [el, sType, el["on" + sType]];
- legacyHandlers[legacyIndex] = [];
-
- el["on" + sType] =
- function(e) {
- YAHOO.util.Event.fireLegacyEvent(
- YAHOO.util.Event.getEvent(e), legacyIndex);
- };
- }
-
- // add a reference to the wrapped listener to our custom
- // stack of events
- //legacyHandlers[legacyIndex].push(index);
- legacyHandlers[legacyIndex].push(li);
-
- } else {
- try {
- this._simpleAdd(el, sType, wrappedFn, false);
- } catch(e) {
- // handle an error trying to attach an event. If it fails
- // we need to clean up the cache
- this.removeListener(el, sType, fn);
- return false;
- }
- }
-
- return true;
-
- },
-
- /**
- * When using legacy events, the handler is routed to this object
- * so we can fire our custom listener stack.
- * @method fireLegacyEvent
- * @static
- * @private
- */
- fireLegacyEvent: function(e, legacyIndex) {
- var ok = true;
-
- var le = legacyHandlers[legacyIndex];
- for (var i=0,len=le.length; i<len; ++i) {
- var li = le[i];
- if ( li && li[this.WFN] ) {
- var scope = li[this.ADJ_SCOPE];
- var ret = li[this.WFN].call(scope, e);
- ok = (ok && ret);
- }
- }
-
- return ok;
- },
-
- /**
- * Returns the legacy event index that matches the supplied
- * signature
- * @method getLegacyIndex
- * @static
- * @private
- */
- getLegacyIndex: function(el, sType) {
- var key = this.generateId(el) + sType;
- if (typeof legacyMap[key] == "undefined") {
- return -1;
- } else {
- return legacyMap[key];
- }
- },
-
- /**
- * Logic that determines when we should automatically use legacy
- * events instead of DOM2 events.
- * @method useLegacyEvent
- * @static
- * @private
- */
- useLegacyEvent: function(el, sType) {
- if (!el.addEventListener && !el.attachEvent) {
- return true;
- } else if (this.isSafari) {
- if ("click" == sType || "dblclick" == sType) {
- return true;
- }
- }
- return false;
- },
-
- /**
- * Removes an event handler
- *
- * @method removeListener
- *
- * @param {Object} el the html element or the id of the element to
- * assign the event to.
- * @param {String} sType the type of event to remove.
- * @param {Function} fn the method the event invokes. If fn is
- * undefined, then all event handlers for the type of event are
- * removed.
- * @return {boolean} true if the unbind was successful, false
- * otherwise.
- * @static
- */
- removeListener: function(el, sType, fn) {
- var i, len;
-
- // The el argument can be a string
- if (typeof el == "string") {
- el = this.getEl(el);
- // The el argument can be an array of elements or element ids.
- } else if ( this._isValidCollection(el)) {
- var ok = true;
- for (i=0,len=el.length; i<len; ++i) {
- ok = ( this.removeListener(el[i], sType, fn) && ok );
- }
- return ok;
- }
-
- if (!fn || !fn.call) {
- //return false;
- return this.purgeElement(el, false, sType);
- }
-
- if ("unload" == sType) {
-
- for (i=0, len=unloadListeners.length; i<len; i++) {
- var li = unloadListeners[i];
- if (li &&
- li[0] == el &&
- li[1] == sType &&
- li[2] == fn) {
- unloadListeners.splice(i, 1);
- return true;
- }
- }
-
- return false;
- }
-
- var cacheItem = null;
-
- // The index is a hidden parameter; needed to remove it from
- // the method signature because it was tempting users to
- // try and take advantage of it, which is not possible.
- var index = arguments[3];
-
- if ("undefined" == typeof index) {
- index = this._getCacheIndex(el, sType, fn);
- }
-
- if (index >= 0) {
- cacheItem = listeners[index];
- }
-
- if (!el || !cacheItem) {
- return false;
- }
-
-
- if (this.useLegacyEvent(el, sType)) {
- var legacyIndex = this.getLegacyIndex(el, sType);
- var llist = legacyHandlers[legacyIndex];
- if (llist) {
- for (i=0, len=llist.length; i<len; ++i) {
- li = llist[i];
- if (li &&
- li[this.EL] == el &&
- li[this.TYPE] == sType &&
- li[this.FN] == fn) {
- llist.splice(i, 1);
- break;
- }
- }
- }
-
- } else {
- try {
- this._simpleRemove(el, sType, cacheItem[this.WFN], false);
- } catch(e) {
- return false;
- }
- }
-
- // removed the wrapped handler
- delete listeners[index][this.WFN];
- delete listeners[index][this.FN];
- listeners.splice(index, 1);
-
- return true;
-
- },
-
- /**
- * Returns the event's target element
- * @method getTarget
- * @param {Event} ev the event
- * @param {boolean} resolveTextNode when set to true the target's
- * parent will be returned if the target is a
- * text node. @deprecated, the text node is
- * now resolved automatically
- * @return {HTMLElement} the event's target
- * @static
- */
- getTarget: function(ev, resolveTextNode) {
- var t = ev.target || ev.srcElement;
- return this.resolveTextNode(t);
- },
-
- /**
- * In some cases, some browsers will return a text node inside
- * the actual element that was targeted. This normalizes the
- * return value for getTarget and getRelatedTarget.
- * @method resolveTextNode
- * @param {HTMLElement} node node to resolve
- * @return {HTMLElement} the normized node
- * @static
- */
- resolveTextNode: function(node) {
- // if (node && node.nodeName &&
- // "#TEXT" == node.nodeName.toUpperCase()) {
- if (node && 3 == node.nodeType) {
- return node.parentNode;
- } else {
- return node;
- }
- },
-
- /**
- * Returns the event's pageX
- * @method getPageX
- * @param {Event} ev the event
- * @return {int} the event's pageX
- * @static
- */
- getPageX: function(ev) {
- var x = ev.pageX;
- if (!x && 0 !== x) {
- x = ev.clientX || 0;
-
- if ( this.isIE ) {
- x += this._getScrollLeft();
- }
- }
-
- return x;
- },
-
- /**
- * Returns the event's pageY
- * @method getPageY
- * @param {Event} ev the event
- * @return {int} the event's pageY
- * @static
- */
- getPageY: function(ev) {
- var y = ev.pageY;
- if (!y && 0 !== y) {
- y = ev.clientY || 0;
-
- if ( this.isIE ) {
- y += this._getScrollTop();
- }
- }
-
- return y;
- },
-
- /**
- * Returns the pageX and pageY properties as an indexed array.
- * @method getXY
- * @param {Event} ev the event
- * @return {[x, y]} the pageX and pageY properties of the event
- * @static
- */
- getXY: function(ev) {
- return [this.getPageX(ev), this.getPageY(ev)];
- },
-
- /**
- * Returns the event's related target
- * @method getRelatedTarget
- * @param {Event} ev the event
- * @return {HTMLElement} the event's relatedTarget
- * @static
- */
- getRelatedTarget: function(ev) {
- var t = ev.relatedTarget;
- if (!t) {
- if (ev.type == "mouseout") {
- t = ev.toElement;
- } else if (ev.type == "mouseover") {
- t = ev.fromElement;
- }
- }
-
- return this.resolveTextNode(t);
- },
-
- /**
- * Returns the time of the event. If the time is not included, the
- * event is modified using the current time.
- * @method getTime
- * @param {Event} ev the event
- * @return {Date} the time of the event
- * @static
- */
- getTime: function(ev) {
- if (!ev.time) {
- var t = new Date().getTime();
- try {
- ev.time = t;
- } catch(e) {
- return t;
- }
- }
-
- return ev.time;
- },
-
- /**
- * Convenience method for stopPropagation + preventDefault
- * @method stopEvent
- * @param {Event} ev the event
- * @static
- */
- stopEvent: function(ev) {
- this.stopPropagation(ev);
- this.preventDefault(ev);
- },
-
- /**
- * Stops event propagation
- * @method stopPropagation
- * @param {Event} ev the event
- * @static
- */
- stopPropagation: function(ev) {
- if (ev.stopPropagation) {
- ev.stopPropagation();
- } else {
- ev.cancelBubble = true;
- }
- },
-
- /**
- * Prevents the default behavior of the event
- * @method preventDefault
- * @param {Event} ev the event
- * @static
- */
- preventDefault: function(ev) {
- if (ev.preventDefault) {
- ev.preventDefault();
- } else {
- ev.returnValue = false;
- }
- },
-
- /**
- * Finds the event in the window object, the caller's arguments, or
- * in the arguments of another method in the callstack. This is
- * executed automatically for events registered through the event
- * manager, so the implementer should not normally need to execute
- * this function at all.
- * @method getEvent
- * @param {Event} e the event parameter from the handler
- * @return {Event} the event
- * @static
- */
- getEvent: function(e) {
- var ev = e || window.event;
-
- if (!ev) {
- var c = this.getEvent.caller;
- while (c) {
- ev = c.arguments[0];
- if (ev && Event == ev.constructor) {
- break;
- }
- c = c.caller;
- }
- }
-
- return ev;
- },
-
- /**
- * Returns the charcode for an event
- * @method getCharCode
- * @param {Event} ev the event
- * @return {int} the event's charCode
- * @static
- */
- getCharCode: function(ev) {
- return ev.charCode || ev.keyCode || 0;
- },
-
- /**
- * Locating the saved event handler data by function ref
- *
- * @method _getCacheIndex
- * @static
- * @private
- */
- _getCacheIndex: function(el, sType, fn) {
- for (var i=0,len=listeners.length; i<len; ++i) {
- var li = listeners[i];
- if ( li &&
- li[this.FN] == fn &&
- li[this.EL] == el &&
- li[this.TYPE] == sType ) {
- return i;
- }
- }
-
- return -1;
- },
-
- /**
- * Generates an unique ID for the element if it does not already
- * have one.
- * @method generateId
- * @param el the element to create the id for
- * @return {string} the resulting id of the element
- * @static
- */
- generateId: function(el) {
- var id = el.id;
-
- if (!id) {
- id = "yuievtautoid-" + counter;
- ++counter;
- el.id = id;
- }
-
- return id;
- },
-
- /**
- * We want to be able to use getElementsByTagName as a collection
- * to attach a group of events to. Unfortunately, different
- * browsers return different types of collections. This function
- * tests to determine if the object is array-like. It will also
- * fail if the object is an array, but is empty.
- * @method _isValidCollection
- * @param o the object to test
- * @return {boolean} true if the object is array-like and populated
- * @static
- * @private
- */
- _isValidCollection: function(o) {
- // this.logger.debug(o.constructor.toString())
- // this.logger.debug(typeof o)
-
- return ( o && // o is something
- o.length && // o is indexed
- typeof o != "string" && // o is not a string
- !o.tagName && // o is not an HTML element
- !o.alert && // o is not a window
- typeof o[0] != "undefined" );
-
- },
-
- /**
- * @private
- * @property elCache
- * DOM element cache
- * @static
- */
- elCache: {},
-
- /**
- * We cache elements bound by id because when the unload event
- * fires, we can no longer use document.getElementById
- * @method getEl
- * @static
- * @private
- */
- getEl: function(id) {
- return document.getElementById(id);
- },
-
- /**
- * Clears the element cache
- * @deprecated Elements are not cached any longer
- * @method clearCache
- * @static
- * @private
- */
- clearCache: function() { },
-
- /**
- * hook up any deferred listeners
- * @method _load
- * @static
- * @private
- */
- _load: function(e) {
- loadComplete = true;
- var EU = YAHOO.util.Event;
- // Remove the listener to assist with the IE memory issue, but not
- // for other browsers because FF 1.0x does not like it.
- if (this.isIE) {
- EU._simpleRemove(window, "load", EU._load);
- }
- },
-
- /**
- * Polling function that runs before the onload event fires,
- * attempting to attach to DOM Nodes as soon as they are
- * available
- * @method _tryPreloadAttach
- * @static
- * @private
- */
- _tryPreloadAttach: function() {
-
- if (this.locked) {
- return false;
- }
-
- this.locked = true;
-
-
- // keep trying until after the page is loaded. We need to
- // check the page load state prior to trying to bind the
- // elements so that we can be certain all elements have been
- // tested appropriately
- var tryAgain = !loadComplete;
- if (!tryAgain) {
- tryAgain = (retryCount > 0);
- }
-
- // onAvailable
- var notAvail = [];
- for (var i=0,len=onAvailStack.length; i<len ; ++i) {
- var item = onAvailStack[i];
- if (item) {
- var el = this.getEl(item.id);
-
- if (el) {
- // The element is available, but not necessarily ready
- // @todo verify IE7 compatibility
- // @todo should we test parentNode.nextSibling?
- // @todo re-evaluate global content ready
- if ( !item.checkReady ||
- loadComplete ||
- el.nextSibling ||
- (document && document.body) ) {
-
- var scope = el;
- if (item.override) {
- if (item.override === true) {
- scope = item.obj;
- } else {
- scope = item.override;
- }
- }
- item.fn.call(scope, item.obj);
- //delete onAvailStack[i];
- // null out instead of delete for Opera
- onAvailStack[i] = null;
- }
- } else {
- notAvail.push(item);
- }
- }
- }
-
- retryCount = (notAvail.length === 0) ? 0 : retryCount - 1;
-
- if (tryAgain) {
- // we may need to strip the nulled out items here
- this.startInterval();
- } else {
- clearInterval(this._interval);
- this._interval = null;
- }
-
- this.locked = false;
-
- return true;
-
- },
-
- /**
- * Removes all listeners attached to the given element via addListener.
- * Optionally, the node's children can also be purged.
- * Optionally, you can specify a specific type of event to remove.
- * @method purgeElement
- * @param {HTMLElement} el the element to purge
- * @param {boolean} recurse recursively purge this element's children
- * as well. Use with caution.
- * @param {string} sType optional type of listener to purge. If
- * left out, all listeners will be removed
- * @static
- */
- purgeElement: function(el, recurse, sType) {
- var elListeners = this.getListeners(el, sType);
- if (elListeners) {
- for (var i=0,len=elListeners.length; i<len ; ++i) {
- var l = elListeners[i];
- // can't use the index on the changing collection
- //this.removeListener(el, l.type, l.fn, l.index);
- this.removeListener(el, l.type, l.fn);
- }
- }
-
- if (recurse && el && el.childNodes) {
- for (i=0,len=el.childNodes.length; i<len ; ++i) {
- this.purgeElement(el.childNodes[i], recurse, sType);
- }
- }
- },
-
- /**
- * Returns all listeners attached to the given element via addListener.
- * Optionally, you can specify a specific type of event to return.
- * @method getListeners
- * @param el {HTMLElement} the element to inspect
- * @param sType {string} optional type of listener to return. If
- * left out, all listeners will be returned
- * @return {Object} the listener. Contains the following fields:
- * &nbsp;&nbsp;type: (string) the type of event
- * &nbsp;&nbsp;fn: (function) the callback supplied to addListener
- * &nbsp;&nbsp;obj: (object) the custom object supplied to addListener
- * &nbsp;&nbsp;adjust: (boolean) whether or not to adjust the default scope
- * &nbsp;&nbsp;index: (int) its position in the Event util listener cache
- * @static
- */
- getListeners: function(el, sType) {
- var elListeners = [];
- if (listeners && listeners.length > 0) {
- for (var i=0,len=listeners.length; i<len ; ++i) {
- var l = listeners[i];
- if ( l && l[this.EL] === el &&
- (!sType || sType === l[this.TYPE]) ) {
- elListeners.push({
- type: l[this.TYPE],
- fn: l[this.FN],
- obj: l[this.OBJ],
- adjust: l[this.ADJ_SCOPE],
- index: i
- });
- }
- }
- }
-
- return (elListeners.length) ? elListeners : null;
- },
-
- /**
- * Removes all listeners registered by pe.event. Called
- * automatically during the unload event.
- * @method _unload
- * @static
- * @private
- */
- _unload: function(e) {
-
- var EU = YAHOO.util.Event, i, j, l, len, index;
-
- for (i=0,len=unloadListeners.length; i<len; ++i) {
- l = unloadListeners[i];
- if (l) {
- var scope = window;
- if (l[EU.ADJ_SCOPE]) {
- if (l[EU.ADJ_SCOPE] === true) {
- scope = l[EU.OBJ];
- } else {
- scope = l[EU.ADJ_SCOPE];
- }
- }
- l[EU.FN].call(scope, EU.getEvent(e), l[EU.OBJ] );
- unloadListeners[i] = null;
- l=null;
- scope=null;
- }
- }
-
- unloadListeners = null;
-
- if (listeners && listeners.length > 0) {
- j = listeners.length;
- while (j) {
- index = j-1;
- l = listeners[index];
- if (l) {
- EU.removeListener(l[EU.EL], l[EU.TYPE],
- l[EU.FN], index);
- }
- j = j - 1;
- }
- l=null;
-
- EU.clearCache();
- }
-
- for (i=0,len=legacyEvents.length; i<len; ++i) {
- // dereference the element
- //delete legacyEvents[i][0];
- legacyEvents[i][0] = null;
-
- // delete the array item
- //delete legacyEvents[i];
- legacyEvents[i] = null;
- }
-
- legacyEvents = null;
-
- EU._simpleRemove(window, "unload", EU._unload);
-
- },
-
- /**
- * Returns scrollLeft
- * @method _getScrollLeft
- * @static
- * @private
- */
- _getScrollLeft: function() {
- return this._getScroll()[1];
- },
-
- /**
- * Returns scrollTop
- * @method _getScrollTop
- * @static
- * @private
- */
- _getScrollTop: function() {
- return this._getScroll()[0];
- },
-
- /**
- * Returns the scrollTop and scrollLeft. Used to calculate the
- * pageX and pageY in Internet Explorer
- * @method _getScroll
- * @static
- * @private
- */
- _getScroll: function() {
- var dd = document.documentElement, db = document.body;
- if (dd && (dd.scrollTop || dd.scrollLeft)) {
- return [dd.scrollTop, dd.scrollLeft];
- } else if (db) {
- return [db.scrollTop, db.scrollLeft];
- } else {
- return [0, 0];
- }
- },
-
- /**
- * Adds a DOM event directly without the caching, cleanup, scope adj, etc
- *
- * @method _simpleAdd
- * @param {HTMLElement} el the element to bind the handler to
- * @param {string} sType the type of event handler
- * @param {function} fn the callback to invoke
- * @param {boolen} capture capture or bubble phase
- * @static
- * @private
- */
- _simpleAdd: function () {
- if (window.addEventListener) {
- return function(el, sType, fn, capture) {
- el.addEventListener(sType, fn, (capture));
- };
- } else if (window.attachEvent) {
- return function(el, sType, fn, capture) {
- el.attachEvent("on" + sType, fn);
- };
- } else {
- return function(){};
- }
- }(),
-
- /**
- * Basic remove listener
- *
- * @method _simpleRemove
- * @param {HTMLElement} el the element to bind the handler to
- * @param {string} sType the type of event handler
- * @param {function} fn the callback to invoke
- * @param {boolen} capture capture or bubble phase
- * @static
- * @private
- */
- _simpleRemove: function() {
- if (window.removeEventListener) {
- return function (el, sType, fn, capture) {
- el.removeEventListener(sType, fn, (capture));
- };
- } else if (window.detachEvent) {
- return function (el, sType, fn) {
- el.detachEvent("on" + sType, fn);
- };
- } else {
- return function(){};
- }
- }()
- };
-
- }();
-
- (function() {
- var EU = YAHOO.util.Event;
-
- /**
- * YAHOO.util.Event.on is an alias for addListener
- * @method on
- * @see addListener
- * @static
- */
- EU.on = EU.addListener;
-
- // YAHOO.mix(EU, YAHOO.util.EventProvider.prototype);
- // EU.createEvent("DOMContentReady");
- // EU.subscribe("DOMContentReady", EU._load);
-
- if (document && document.body) {
- EU._load();
- } else {
- // EU._simpleAdd(document, "DOMContentLoaded", EU._load);
- EU._simpleAdd(window, "load", EU._load);
- }
- EU._simpleAdd(window, "unload", EU._unload);
- EU._tryPreloadAttach();
- })();
-}
-
-/**
- * EventProvider is designed to be used with YAHOO.augment to wrap
- * CustomEvents in an interface that allows events to be subscribed to
- * and fired by name. This makes it possible for implementing code to
- * subscribe to an event that either has not been created yet, or will
- * not be created at all.
- *
- * @Class EventProvider
- */
-YAHOO.util.EventProvider = function() { };
-
-YAHOO.util.EventProvider.prototype = {
-
- /**
- * Private storage of custom events
- * @property __yui_events
- * @type Object[]
- * @private
- */
- __yui_events: null,
-
- /**
- * Private storage of custom event subscribers
- * @property __yui_subscribers
- * @type Object[]
- * @private
- */
- __yui_subscribers: null,
-
- /**
- * Subscribe to a CustomEvent by event type
- *
- * @method subscribe
- * @param p_type {string} the type, or name of the event
- * @param p_fn {function} the function to exectute when the event fires
- * @param p_obj
- * @param p_obj {Object} An object to be passed along when the event
- * fires
- * @param p_override {boolean} If true, the obj passed in becomes the
- * execution scope of the listener
- */
- subscribe: function(p_type, p_fn, p_obj, p_override) {
-
- this.__yui_events = this.__yui_events || {};
- var ce = this.__yui_events[p_type];
-
- if (ce) {
- ce.subscribe(p_fn, p_obj, p_override);
- } else {
- this.__yui_subscribers = this.__yui_subscribers || {};
- var subs = this.__yui_subscribers;
- if (!subs[p_type]) {
- subs[p_type] = [];
- }
- subs[p_type].push(
- { fn: p_fn, obj: p_obj, override: p_override } );
- }
- },
-
- /**
- * Unsubscribes the from the specified event
- * @method unsubscribe
- * @param p_type {string} The type, or name of the event
- * @param p_fn {Function} The function to execute
- * @param p_obj {Object} The custom object passed to subscribe (optional)
- * @return {boolean} true if the subscriber was found and detached.
- */
- unsubscribe: function(p_type, p_fn, p_obj) {
- this.__yui_events = this.__yui_events || {};
- var ce = this.__yui_events[p_type];
- if (ce) {
- return ce.unsubscribe(p_fn, p_obj);
- } else {
- return false;
- }
- },
-
- /**
- * Creates a new custom event of the specified type. If a custom event
- * by that name already exists, it will not be re-created. In either
- * case the custom event is returned.
- *
- * @method createEvent
- *
- * @param p_type {string} the type, or name of the event
- * @param p_config {object} optional config params. Valid properties are:
- *
- * <ul>
- * <li>
- * scope: defines the default execution scope. If not defined
- * the default scope will be this instance.
- * </li>
- * <li>
- * silent: if true, the custom event will not generate log messages.
- * This is false by default.
- * </li>
- * <li>
- * onSubscribeCallback: specifies a callback to execute when the
- * event has a new subscriber. This will fire immediately for
- * each queued subscriber if any exist prior to the creation of
- * the event.
- * </li>
- * </ul>
- *
- * @return {CustomEvent} the custom event
- *
- */
- createEvent: function(p_type, p_config) {
-
- this.__yui_events = this.__yui_events || {};
- var opts = p_config || {};
- var events = this.__yui_events;
-
- if (events[p_type]) {
- } else {
-
- var scope = opts.scope || this;
- var silent = opts.silent || null;
-
- var ce = new YAHOO.util.CustomEvent(p_type, scope, silent,
- YAHOO.util.CustomEvent.FLAT);
- events[p_type] = ce;
-
- if (opts.onSubscribeCallback) {
- ce.subscribeEvent.subscribe(opts.onSubscribeCallback);
- }
-
- this.__yui_subscribers = this.__yui_subscribers || {};
- var qs = this.__yui_subscribers[p_type];
-
- if (qs) {
- for (var i=0; i<qs.length; ++i) {
- ce.subscribe(qs[i].fn, qs[i].obj, qs[i].override);
- }
- }
- }
-
- return events[p_type];
- },
-
- /**
- * Fire a custom event by name. The callback functions will be executed
- * from the scope specified when the event was created, and with the
- * following parameters:
- * <ul>
- * <li>The first argument fire() was executed with</li>
- * <li>The custom object (if any) that was passed into the subscribe()
- * method</li>
- * </ul>
- * @method fireEvent
- * @param p_type {string} the type, or name of the event
- * @param arguments {Object*} an arbitrary set of parameters to pass to
- * the handler.
- * @return {boolean} the return value from CustomEvent.fire, or null if
- * the custom event does not exist.
- */
- fireEvent: function(p_type, arg1, arg2, etc) {
-
- this.__yui_events = this.__yui_events || {};
- var ce = this.__yui_events[p_type];
-
- if (ce) {
- var args = [];
- for (var i=1; i<arguments.length; ++i) {
- args.push(arguments[i]);
- }
- return ce.fire.apply(ce, args);
- } else {
- return null;
- }
- },
-
- /**
- * Returns true if the custom event of the provided type has been created
- * with createEvent.
- * @method hasEvent
- * @param type {string} the type, or name of the event
- */
- hasEvent: function(type) {
- if (this.__yui_events) {
- if (this.__yui_events[type]) {
- return true;
- }
- }
- return false;
- }
-
-};
-
generated by cgit v1.2.3-1-g7c22 (git 2.25.1) at 2024-06-02 12:00:54 +0000