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webclient.js-ext.yui.build.event.event.js Maven / Gradle / Ivy
/*
Copyright (c) 2010, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.8.2r1
*/
/**
* 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} context 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.
* @param fireOnce {boolean} If configured to fire once, the custom event
* will only notify subscribers a single time regardless of how many times
* the event is fired. In addition, new subscribers will be notified
* immediately if the event has already been fired.
* @namespace YAHOO.util
* @class CustomEvent
* @constructor
*/
YAHOO.util.CustomEvent = function(type, context, silent, signature, fireOnce) {
/**
* The type of event, returned to subscribers when the event fires
* @property type
* @type string
*/
this.type = type;
/**
* The context the event will fire from by default. Defaults to the window obj.
* @property scope
* @type object
*/
this.scope = context || window;
/**
* By default all custom events are logged in the debug build. Set silent to true
* to disable debug output for this event.
* @property silent
* @type boolean
*/
this.silent = silent;
/**
* If configured to fire once, the custom event will only notify subscribers
* a single time regardless of how many times the event is fired. In addition,
* new subscribers will be notified immediately if the event has already been
* fired.
* @property fireOnce
* @type boolean
* @default false
*/
this.fireOnce = fireOnce;
/**
* Indicates whether or not this event has ever been fired.
* @property fired
* @type boolean
* @default false
*/
this.fired = false;
/**
* For fireOnce events the arguments the event was fired with are stored
* so that new subscribers get the proper payload.
* @property firedWith
* @type Array
*/
this.firedWith = null;
/**
* Custom events support two styles of arguments provided to the event
* subscribers.
*
* YAHOO.util.CustomEvent.LIST:
*
* param1: event name
* param2: array of arguments sent to fire
* param3: a custom object supplied by the subscriber
*
*
* YAHOO.util.CustomEvent.FLAT
*
* param1: the first argument passed to fire. If you need to
* pass multiple parameters, use and array or object literal
* param2: a custom object supplied by the subscriber
*
*
*
* @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 fn {Function} The function to execute
* @param obj An object to be passed along when the event fires.
* Defaults to the custom event.
* @param override If true, the obj passed in becomes the
* execution context of the listener. If an object, that object becomes
* the execution context. Defaults to the custom event.
*/
this.subscribeEvent =
new YAHOO.util.CustomEvent(onsubscribeType, this, true);
}
/**
* In order to make it possible to execute the rest of the subscriber
* stack when one thows an exception, the subscribers exceptions are
* caught. The most recent exception is stored in this property
* @property lastError
* @type Error
*/
this.lastError = null;
};
/**
* 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.
* overrideContext If true, the obj passed in becomes the execution
* context of the listener. If an object, that object becomes the execution context.
*/
subscribe: function(fn, obj, overrideContext) {
if (!fn) {
throw new Error("Invalid callback for subscriber to '" + this.type + "'");
}
if (this.subscribeEvent) {
this.subscribeEvent.fire(fn, obj, overrideContext);
}
var s = new YAHOO.util.Subscriber(fn, obj, overrideContext);
if (this.fireOnce && this.fired) {
this.notify(s, this.firedWith);
} else {
this.subscribers.push(s);
}
},
/**
* Unsubscribes subscribers.
* @method unsubscribe
* @param {Function} fn The subscribed function to remove, if not supplied
* all will be removed
* @param {Object} obj The custom object passed to subscribe. This is
* optional, but if supplied will be used to
* disambiguate multiple listeners that are the same
* (e.g., you subscribe many object using a function
* that lives on the prototype)
* @return {boolean} True if the subscriber was found and detached.
*/
unsubscribe: function(fn, obj) {
if (!fn) {
return this.unsubscribeAll();
}
var found = false;
for (var i=0, len=this.subscribers.length; i
* The type of event
* All of the arguments fire() was executed with as an array
* The custom object (if any) that was passed into the subscribe()
* method
*
* @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() {
this.lastError = null;
var errors = [],
len=this.subscribers.length;
var args=[].slice.call(arguments, 0), ret=true, i, rebuild=false;
if (this.fireOnce) {
if (this.fired) {
return true;
} else {
this.firedWith = args;
}
}
this.fired = true;
if (!len && this.silent) {
return true;
}
if (!this.silent) {
}
// make a copy of the subscribers so that there are
// no index problems if one subscriber removes another.
var subs = this.subscribers.slice();
for (i=0; i 0) {
param = args[0];
}
try {
ret = s.fn.call(scope, param, s.obj);
} catch(e) {
this.lastError = e;
// errors.push(e);
if (throwErrors) {
throw e;
}
}
} else {
try {
ret = s.fn.call(scope, this.type, args, s.obj);
} catch(ex) {
this.lastError = ex;
if (throwErrors) {
throw ex;
}
}
}
return ret;
},
/**
* Removes all listeners
* @method unsubscribeAll
* @return {int} The number of listeners unsubscribed
*/
unsubscribeAll: function() {
var l = this.subscribers.length, i;
for (i=l-1; i>-1; i--) {
this._delete(i);
}
this.subscribers=[];
return l;
},
/**
* @method _delete
* @private
*/
_delete: function(index) {
var s = this.subscribers[index];
if (s) {
delete s.fn;
delete s.obj;
}
// this.subscribers[index]=null;
this.subscribers.splice(index, 1);
},
/**
* @method toString
*/
toString: function() {
return "CustomEvent: " + "'" + this.type + "', " +
"context: " + 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} overrideContext If true, the obj passed in becomes the execution
* context of the listener
* @class Subscriber
* @constructor
*/
YAHOO.util.Subscriber = function(fn, obj, overrideContext) {
/**
* 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 = YAHOO.lang.isUndefined(obj) ? null : obj;
/**
* The default execution context for the event listener is defined when the
* event is created (usually the object which contains the event).
* By setting overrideContext to true, the execution context becomes the custom
* object passed in by the subscriber. If overrideContext is an object, that
* object becomes the context.
* @property overrideContext
* @type boolean|object
*/
this.overrideContext = overrideContext;
};
/**
* Returns the execution context for this listener. If overrideContext was set to true
* the custom obj will be the context. If overrideContext is an object, that is the
* context, otherwise the default context will be used.
* @method getScope
* @param {Object} defaultScope the context to use if this listener does not
* override it.
*/
YAHOO.util.Subscriber.prototype.getScope = function(defaultScope) {
if (this.overrideContext) {
if (this.overrideContext === true) {
return this.obj;
} else {
return this.overrideContext;
}
}
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 +
", overrideContext: " + (this.overrideContext || "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.
// @TODO this needs to be changed so that only the state data that needs to
// be preserved is kept, while methods are overwritten/added as needed.
// This means that the module pattern can't be used.
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
*/
listeners = [],
/**
* User-defined unload function that will be fired before all events
* are detached
* @property unloadListeners
* @type array
* @static
* @private
*/
unloadListeners = [],
/**
* 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
*/
retryCount = 0,
/**
* onAvailable listeners
* @property onAvailStack
* @static
* @private
*/
onAvailStack = [],
/**
* Counter for auto id generation
* @property counter
* @static
* @private
*/
counter = 0,
/**
* Normalized keycodes for webkit/safari
* @property webkitKeymap
* @type {int: int}
* @private
* @static
* @final
*/
webkitKeymap = {
63232: 38, // up
63233: 40, // down
63234: 37, // left
63235: 39, // right
63276: 33, // page up
63277: 34, // page down
25: 9 // SHIFT-TAB (Safari provides a different key code in
// this case, even though the shiftKey modifier is set)
},
isIE = YAHOO.env.ua.ie,
// String constants used by the addFocusListener and removeFocusListener methods
FOCUSIN = "focusin",
FOCUSOUT = "focusout";
return {
/**
* 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 500@amp;40 ms, so it will poll
* for 20 seconds or until all outstanding handlers are bound
* (whichever comes first).
* @property POLL_RETRYS
* @type int
* @static
* @final
*/
POLL_RETRYS: 500,
/**
* The poll interval in milliseconds
* @property POLL_INTERVAL
* @type int
* @static
* @final
*/
POLL_INTERVAL: 40,
/**
* 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 context 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. Specific to
* unload listeners
* @property OBJ
* @type int
* @static
* @final
*/
UNLOAD_OBJ: 3,
/**
* Adjusted context, 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,
/**
* The original obj passed into addListener
* @property OBJ
* @type int
* @static
* @final
*/
OBJ: 5,
/**
* The original context parameter passed into addListener
* @property OVERRIDE
* @type int
* @static
* @final
*/
OVERRIDE: 6,
/**
* The original capture parameter passed into addListener
* @property CAPTURE
* @type int
* @static
* @final
*/
CAPTURE: 7,
/**
* addListener/removeListener can throw errors in unexpected scenarios.
* These errors are suppressed, the method returns false, and this property
* is set
* @property lastError
* @static
* @type Error
*/
lastError: null,
/**
* Safari detection
* @property isSafari
* @private
* @static
* @deprecated use YAHOO.env.ua.webkit
*/
isSafari: YAHOO.env.ua.webkit,
/**
* webkit version
* @property webkit
* @type string
* @private
* @static
* @deprecated use YAHOO.env.ua.webkit
*/
webkit: YAHOO.env.ua.webkit,
/**
* IE detection
* @property isIE
* @private
* @static
* @deprecated use YAHOO.env.ua.ie
*/
isIE: isIE,
/**
* poll handle
* @property _interval
* @static
* @private
*/
_interval: null,
/**
* document readystate poll handle
* @property _dri
* @static
* @private
*/
_dri: null,
/**
* Map of special event types
* @property _specialTypes
* @static
* @private
*/
_specialTypes: {
focusin: (isIE ? "focusin" : "focus"),
focusout: (isIE ? "focusout" : "blur")
},
/**
* True when the document is initially usable
* @property DOMReady
* @type boolean
* @static
*/
DOMReady: false,
/**
* Errors thrown by subscribers of custom events are caught
* and the error message is written to the debug console. If
* this property is set to true, it will also re-throw the
* error.
* @property throwErrors
* @type boolean
* @default false
*/
throwErrors: false,
/**
* @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._interval = YAHOO.lang.later(this.POLL_INTERVAL, this, this._tryPreloadAttach, null, true);
}
},
/**
* 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.
*
* The callback is executed with a single parameter:
* the custom object parameter, if provided.
*
* @method onAvailable
*
* @param {string||string[]} id the id of the element, or an array
* of ids to look for.
* @param {function} fn what to execute when the element is found.
* @param {object} obj an optional object to be passed back as
* a parameter to fn.
* @param {boolean|object} overrideContext If set to true, fn will execute
* in the context of obj, if set to an object it
* will execute in the context of that object
* @param checkContent {boolean} check child node readiness (onContentReady)
* @static
*/
onAvailable: function(id, fn, obj, overrideContext, checkContent) {
var a = (YAHOO.lang.isString(id)) ? [id] : id;
for (var i=0; iThe callback is executed with a single parameter:
* the custom object parameter, if provided.
*
* @method onContentReady
*
* @param {string} id the id of the element to look for.
* @param {function} fn what to execute when the element is ready.
* @param {object} obj an optional object to be passed back as
* a parameter to fn.
* @param {boolean|object} overrideContext If set to true, fn will execute
* in the context of obj. If an object, fn will
* exectute in the context of that object
*
* @static
*/
onContentReady: function(id, fn, obj, overrideContext) {
this.onAvailable(id, fn, obj, overrideContext, true);
},
/**
* Executes the supplied callback when the DOM is first usable. This
* will execute immediately if called after the DOMReady event has
* fired. @todo the DOMContentReady event does not fire when the
* script is dynamically injected into the page. This means the
* DOMReady custom event will never fire in FireFox or Opera when the
* library is injected. It _will_ fire in Safari, and the IE
* implementation would allow for us to fire it if the defered script
* is not available. We want this to behave the same in all browsers.
* Is there a way to identify when the script has been injected
* instead of included inline? Is there a way to know whether the
* window onload event has fired without having had a listener attached
* to it when it did so?
*
* The callback is a CustomEvent, so the signature is:
* type <string>, args <array>, customobject <object>
* For DOMReady events, there are no fire argments, so the
* signature is:
* "DOMReady", [], obj
*
*
* @method onDOMReady
*
* @param {function} fn what to execute when the element is found.
* @param {object} obj an optional object to be passed back as
* a parameter to fn.
* @param {boolean|object} overrideContext If set to true, fn will execute
* in the context of obj, if set to an object it
* will execute in the context of that object
*
* @static
*/
// onDOMReady: function(fn, obj, overrideContext) {
onDOMReady: function() {
this.DOMReadyEvent.subscribe.apply(this.DOMReadyEvent, arguments);
},
/**
* Appends an event handler
*
* @method _addListener
*
* @param {String|HTMLElement|Array|NodeList} el An id, an element
* reference, or a collection of ids and/or elements to assign the
* listener 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|object} overrideContext If true, the obj passed in becomes
* the execution context of the listener. If an
* object, this object becomes the execution
* context.
* @param {boolen} capture capture or bubble phase
* @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.
* @private
* @static
*/
_addListener: function(el, sType, fn, obj, overrideContext, bCapture) {
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-1; 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=unloadListeners.length-1; i>-1; i--) {
li = unloadListeners[i];
if (li &&
li[0] == el &&
li[1] == sType &&
li[2] == fn) {
unloadListeners.splice(i, 1);
// unloadListeners[i]=null;
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(listeners, el, sType, fn);
}
if (index >= 0) {
cacheItem = listeners[index];
}
if (!el || !cacheItem) {
return false;
}
var bCapture = cacheItem[this.CAPTURE] === true ? true : false;
try {
this._simpleRemove(el, sType, cacheItem[this.WFN], bCapture);
} catch(ex) {
this.lastError = ex;
return false;
}
// removed the wrapped handler
delete listeners[index][this.WFN];
delete listeners[index][this.FN];
listeners.splice(index, 1);
// listeners[index]=null;
return true;
},
/**
* Returns the event's target element. Safari sometimes provides
* a text node, and this is automatically resolved to the text
* node's parent so that it behaves like other browsers.
* @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(n) {
try {
if (n && 3 == n.nodeType) {
return n.parentNode;
}
} catch(e) { }
return n;
},
/**
* 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(ex) {
this.lastError = ex;
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
* @param {HTMLElement} boundEl the element the listener is attached to
* @return {Event} the event
* @static
*/
getEvent: function(e, boundEl) {
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) {
var code = ev.keyCode || ev.charCode || 0;
// webkit key normalization
if (YAHOO.env.ua.webkit && (code in webkitKeymap)) {
code = webkitKeymap[code];
}
return code;
},
/**
* Locating the saved event handler data by function ref
*
* @method _getCacheIndex
* @static
* @private
*/
_getCacheIndex: function(a, el, sType, fn) {
for (var i=0, l=a.length; i 0 && onAvailStack.length > 0);
}
// onAvailable
var notAvail = [];
var executeItem = function (el, item) {
var context = el;
if (item.overrideContext) {
if (item.overrideContext === true) {
context = item.obj;
} else {
context = item.overrideContext;
}
}
item.fn.call(context, item.obj);
};
var i, len, item, el, ready=[];
// onAvailable onContentReady
for (i=0, len=onAvailStack.length; i-1; i--) {
item = onAvailStack[i];
if (!item || !item.id) {
onAvailStack.splice(i, 1);
}
}
this.startInterval();
} else {
if (this._interval) {
// clearInterval(this._interval);
this._interval.cancel();
this._interval = null;
}
}
this.locked = false;
},
/**
* 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 oEl = (YAHOO.lang.isString(el)) ? this.getEl(el) : el;
var elListeners = this.getListeners(oEl, sType), i, len;
if (elListeners) {
for (i=elListeners.length-1; i>-1; i--) {
var l = elListeners[i];
this.removeListener(oEl, l.type, l.fn);
}
}
if (recurse && oEl && oEl.childNodes) {
for (i=0,len=oEl.childNodes.length; i-1; j--) {
l = listeners[j];
if (l) {
EU.removeListener(l[EU.EL], l[EU.TYPE], l[EU.FN], j);
}
}
l=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];
}
},
/**
* Used by old versions of CustomEvent, restored for backwards
* compatibility
* @method regCE
* @private
* @static
* @deprecated still here for backwards compatibility
*/
regCE: function() {},
/**
* Adds a DOM event directly without the caching, cleanup, context 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.util.Event.onFocus is an alias for addFocusListener
* @method onFocus
* @see addFocusListener
* @static
* @deprecated use YAHOO.util.Event.on and specify "focusin" as the event type.
*/
EU.onFocus = EU.addFocusListener;
/**
* YAHOO.util.Event.onBlur is an alias for addBlurListener
* @method onBlur
* @see addBlurListener
* @static
* @deprecated use YAHOO.util.Event.on and specify "focusout" as the event type.
*/
EU.onBlur = EU.addBlurListener;
/*! DOMReady: based on work by: Dean Edwards/John Resig/Matthias Miller/Diego Perini */
// Internet Explorer: use the readyState of a defered script.
// This isolates what appears to be a safe moment to manipulate
// the DOM prior to when the document's readyState suggests
// it is safe to do so.
if (EU.isIE) {
if (self !== self.top) {
document.onreadystatechange = function() {
if (document.readyState == 'complete') {
document.onreadystatechange = null;
EU._ready();
}
};
} else {
// Process onAvailable/onContentReady items when the
// DOM is ready.
YAHOO.util.Event.onDOMReady(
YAHOO.util.Event._tryPreloadAttach,
YAHOO.util.Event, true);
var n = document.createElement('p');
EU._dri = setInterval(function() {
try {
// throws an error if doc is not ready
n.doScroll('left');
clearInterval(EU._dri);
EU._dri = null;
EU._ready();
n = null;
} catch (ex) {
}
}, EU.POLL_INTERVAL);
}
// The document's readyState in Safari currently will
// change to loaded/complete before images are loaded.
} else if (EU.webkit && EU.webkit < 525) {
EU._dri = setInterval(function() {
var rs=document.readyState;
if ("loaded" == rs || "complete" == rs) {
clearInterval(EU._dri);
EU._dri = null;
EU._ready();
}
}, EU.POLL_INTERVAL);
// FireFox and Opera: These browsers provide a event for this
// moment. The latest WebKit releases now support this event.
} else {
EU._simpleAdd(document, "DOMContentLoaded", EU._ready);
}
/////////////////////////////////////////////////////////////
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 {Object} An object to be passed along when the event
* fires
* @param overrideContext {boolean} If true, the obj passed in becomes the
* execution scope of the listener
*/
subscribe: function(p_type, p_fn, p_obj, overrideContext) {
this.__yui_events = this.__yui_events || {};
var ce = this.__yui_events[p_type];
if (ce) {
ce.subscribe(p_fn, p_obj, overrideContext);
} 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, overrideContext: overrideContext } );
}
},
/**
* Unsubscribes one or more listeners the from the specified event
* @method unsubscribe
* @param p_type {string} The type, or name of the event. If the type
* is not specified, it will attempt to remove
* the listener from all hosted events.
* @param p_fn {Function} The subscribed function to unsubscribe, if not
* supplied, all subscribers will be removed.
* @param p_obj {Object} The custom object passed to subscribe. This is
* optional, but if supplied will be used to
* disambiguate multiple listeners that are the same
* (e.g., you subscribe many object using a function
* that lives on the prototype)
* @return {boolean} true if the subscriber was found and detached.
*/
unsubscribe: function(p_type, p_fn, p_obj) {
this.__yui_events = this.__yui_events || {};
var evts = this.__yui_events;
if (p_type) {
var ce = evts[p_type];
if (ce) {
return ce.unsubscribe(p_fn, p_obj);
}
} else {
var ret = true;
for (var i in evts) {
if (YAHOO.lang.hasOwnProperty(evts, i)) {
ret = ret && evts[i].unsubscribe(p_fn, p_obj);
}
}
return ret;
}
return false;
},
/**
* Removes all listeners from the specified event. If the event type
* is not specified, all listeners from all hosted custom events will
* be removed.
* @method unsubscribeAll
* @param p_type {string} The type, or name of the event
*/
unsubscribeAll: function(p_type) {
return this.unsubscribe(p_type);
},
/**
* 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:
*
*
*
* scope: defines the default execution scope. If not defined
* the default scope will be this instance.
*
*
* silent: if true, the custom event will not generate log messages.
* This is false by default.
*
*
* fireOnce: if true, the custom event will only notify subscribers
* once regardless of the number of times the event is fired. In
* addition, new subscribers will be executed immediately if the
* event has already fired.
* This is false by default.
*
*
* 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.
*
*
*
* @return {CustomEvent} the custom event
*
*/
createEvent: function(p_type, p_config) {
this.__yui_events = this.__yui_events || {};
var opts = p_config || {},
events = this.__yui_events, ce;
if (events[p_type]) {
} else {
ce = new YAHOO.util.CustomEvent(p_type, opts.scope || this, opts.silent,
YAHOO.util.CustomEvent.FLAT, opts.fireOnce);
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
* The first argument fire() was executed with
* The custom object (if any) that was passed into the subscribe()
* method
*
* @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
*
*/
fireEvent: function(p_type) {
this.__yui_events = this.__yui_events || {};
var ce = this.__yui_events[p_type];
if (!ce) {
return null;
}
var args = [];
for (var i=1; i
