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YUI.add('yui2-event-simulate', function(Y) {
    var YAHOO    = Y.YUI2;
    /*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/

/**
 * DOM event simulation utility
 * @module event-simulate
 * @namespace YAHOO.util
 * @requires yahoo,dom,event
 */

/**
 * The UserAction object provides functions that simulate events occurring in
 * the browser. Since these are simulated events, they do not behave exactly
 * as regular, user-initiated events do, but can be used to test simple
 * user interactions safely.
 *
 * @namespace YAHOO.util
 * @class UserAction
 * @static
 */
YAHOO.util.UserAction = {

//--------------------------------------------------------------------------
    // Generic event methods
    //--------------------------------------------------------------------------

/**
     * Simulates a key event using the given event information to populate
     * the generated event object. This method does browser-equalizing
     * calculations to account for differences in the DOM and IE event models
     * as well as different browser quirks. Note: keydown causes Safari 2.x to
     * crash.
     * @method simulateKeyEvent
     * @private
     * @static
     * @param {HTMLElement} target The target of the given event.
     * @param {String} type The type of event to fire. This can be any one of
     *      the following: keyup, keydown, and keypress.
     * @param {Boolean} bubbles (Optional) Indicates if the event can be
     *      bubbled up. DOM Level 3 specifies that all key events bubble by
     *      default. The default is true.
     * @param {Boolean} cancelable (Optional) Indicates if the event can be
     *      canceled using preventDefault(). DOM Level 3 specifies that all
     *      key events can be cancelled. The default
     *      is true.
     * @param {Window} view (Optional) The view containing the target. This is
     *      typically the window object. The default is window.
     * @param {Boolean} ctrlKey (Optional) Indicates if one of the CTRL keys
     *      is pressed while the event is firing. The default is false.
     * @param {Boolean} altKey (Optional) Indicates if one of the ALT keys
     *      is pressed while the event is firing. The default is false.
     * @param {Boolean} shiftKey (Optional) Indicates if one of the SHIFT keys
     *      is pressed while the event is firing. The default is false.
     * @param {Boolean} metaKey (Optional) Indicates if one of the META keys
     *      is pressed while the event is firing. The default is false.
     * @param {int} keyCode (Optional) The code for the key that is in use.
     *      The default is 0.
     * @param {int} charCode (Optional) The Unicode code for the character
     *      associated with the key being used. The default is 0.
     */
    simulateKeyEvent : function (target /*:HTMLElement*/, type /*:String*/,
                                 bubbles /*:Boolean*/,  cancelable /*:Boolean*/,
                                 view /*:Window*/,
                                 ctrlKey /*:Boolean*/,    altKey /*:Boolean*/,
                                 shiftKey /*:Boolean*/,   metaKey /*:Boolean*/,
                                 keyCode /*:int*/,        charCode /*:int*/) /*:Void*/
    {
        //check target
        target = YAHOO.util.Dom.get(target);
        if (!target){
            throw new Error("simulateKeyEvent(): Invalid target.");
        }

//check event type
        if (YAHOO.lang.isString(type)){
            type = type.toLowerCase();
            switch(type){
                case "keyup":
                case "keydown":
                case "keypress":
                    break;
                case "textevent": //DOM Level 3
                    type = "keypress";
                    break;
                    // @TODO was the fallthrough intentional, if so throw error
                default:
                    throw new Error("simulateKeyEvent(): Event type '" + type + "' not supported.");
            }
        } else {
            throw new Error("simulateKeyEvent(): Event type must be a string.");
        }

//setup default values
        if (!YAHOO.lang.isBoolean(bubbles)){
            bubbles = true; //all key events bubble
        }
        if (!YAHOO.lang.isBoolean(cancelable)){
            cancelable = true; //all key events can be cancelled
        }
        if (!YAHOO.lang.isObject(view)){
            view = window; //view is typically window
        }
        if (!YAHOO.lang.isBoolean(ctrlKey)){
            ctrlKey = false;
        }
        if (!YAHOO.lang.isBoolean(altKey)){
            altKey = false;
        }
        if (!YAHOO.lang.isBoolean(shiftKey)){
            shiftKey = false;
        }
        if (!YAHOO.lang.isBoolean(metaKey)){
            metaKey = false;
        }
        if (!YAHOO.lang.isNumber(keyCode)){
            keyCode = 0;
        }
        if (!YAHOO.lang.isNumber(charCode)){
            charCode = 0;
        }

//try to create a mouse event
        var customEvent /*:MouseEvent*/ = null;

//check for DOM-compliant browsers first
        if (YAHOO.lang.isFunction(document.createEvent)){

try {

//try to create key event
                customEvent = document.createEvent("KeyEvents");

/*
                 * Interesting problem: Firefox implemented a non-standard
                 * version of initKeyEvent() based on DOM Level 2 specs.
                 * Key event was removed from DOM Level 2 and re-introduced
                 * in DOM Level 3 with a different interface. Firefox is the
                 * only browser with any implementation of Key Events, so for
                 * now, assume it's Firefox if the above line doesn't error.
                 */
                //TODO: Decipher between Firefox's implementation and a correct one.
                customEvent.initKeyEvent(type, bubbles, cancelable, view, ctrlKey,
                    altKey, shiftKey, metaKey, keyCode, charCode);

} catch (ex /*:Error*/){

/*
                 * If it got here, that means key events aren't officially supported.
                 * Safari/WebKit is a real problem now. WebKit 522 won't let you
                 * set keyCode, charCode, or other properties if you use a
                 * UIEvent, so we first must try to create a generic event. The
                 * fun part is that this will throw an error on Safari 2.x. The
                 * end result is that we need another try...catch statement just to
                 * deal with this mess.
                 */
                try {

//try to create generic event - will fail in Safari 2.x
                    customEvent = document.createEvent("Events");

} catch (uierror /*:Error*/){

//the above failed, so create a UIEvent for Safari 2.x
                    customEvent = document.createEvent("UIEvents");

} finally {

customEvent.initEvent(type, bubbles, cancelable);

//initialize
                    customEvent.view = view;
                    customEvent.altKey = altKey;
                    customEvent.ctrlKey = ctrlKey;
                    customEvent.shiftKey = shiftKey;
                    customEvent.metaKey = metaKey;
                    customEvent.keyCode = keyCode;
                    customEvent.charCode = charCode;

}

//fire the event
            target.dispatchEvent(customEvent);

} else if (YAHOO.lang.isObject(document.createEventObject)){ //IE

//create an IE event object
            customEvent = document.createEventObject();

//assign available properties
            customEvent.bubbles = bubbles;
            customEvent.cancelable = cancelable;
            customEvent.view = view;
            customEvent.ctrlKey = ctrlKey;
            customEvent.altKey = altKey;
            customEvent.shiftKey = shiftKey;
            customEvent.metaKey = metaKey;

/*
             * IE doesn't support charCode explicitly. CharCode should
             * take precedence over any keyCode value for accurate
             * representation.
             */
            customEvent.keyCode = (charCode > 0) ? charCode : keyCode;

//fire the event
            target.fireEvent("on" + type, customEvent);

} else {
            throw new Error("simulateKeyEvent(): No event simulation framework present.");
        }
    },

/**
     * Simulates a mouse event using the given event information to populate
     * the generated event object. This method does browser-equalizing
     * calculations to account for differences in the DOM and IE event models
     * as well as different browser quirks.
     * @method simulateMouseEvent
     * @private
     * @static
     * @param {HTMLElement} target The target of the given event.
     * @param {String} type The type of event to fire. This can be any one of
     *      the following: click, dblclick, mousedown, mouseup, mouseout,
     *      mouseover, and mousemove.
     * @param {Boolean} bubbles (Optional) Indicates if the event can be
     *      bubbled up. DOM Level 2 specifies that all mouse events bubble by
     *      default. The default is true.
     * @param {Boolean} cancelable (Optional) Indicates if the event can be
     *      canceled using preventDefault(). DOM Level 2 specifies that all
     *      mouse events except mousemove can be cancelled. The default
     *      is true for all events except mousemove, for which the default
     *      is false.
     * @param {Window} view (Optional) The view containing the target. This is
     *      typically the window object. The default is window.
     * @param {int} detail (Optional) The number of times the mouse button has
     *      been used. The default value is 1.
     * @param {int} screenX (Optional) The x-coordinate on the screen at which
     *      point the event occured. The default is 0.
     * @param {int} screenY (Optional) The y-coordinate on the screen at which
     *      point the event occured. The default is 0.
     * @param {int} clientX (Optional) The x-coordinate on the client at which
     *      point the event occured. The default is 0.
     * @param {int} clientY (Optional) The y-coordinate on the client at which
     *      point the event occured. The default is 0.
     * @param {Boolean} ctrlKey (Optional) Indicates if one of the CTRL keys
     *      is pressed while the event is firing. The default is false.
     * @param {Boolean} altKey (Optional) Indicates if one of the ALT keys
     *      is pressed while the event is firing. The default is false.
     * @param {Boolean} shiftKey (Optional) Indicates if one of the SHIFT keys
     *      is pressed while the event is firing. The default is false.
     * @param {Boolean} metaKey (Optional) Indicates if one of the META keys
     *      is pressed while the event is firing. The default is false.
     * @param {int} button (Optional) The button being pressed while the event
     *      is executing. The value should be 0 for the primary mouse button
     *      (typically the left button), 1 for the terciary mouse button
     *      (typically the middle button), and 2 for the secondary mouse button
     *      (typically the right button). The default is 0.
     * @param {HTMLElement} relatedTarget (Optional) For mouseout events,
     *      this is the element that the mouse has moved to. For mouseover
     *      events, this is the element that the mouse has moved from. This
     *      argument is ignored for all other events. The default is null.
     */
    simulateMouseEvent : function (target /*:HTMLElement*/, type /*:String*/,
                                   bubbles /*:Boolean*/,  cancelable /*:Boolean*/,
                                   view /*:Window*/,        detail /*:int*/,
                                   screenX /*:int*/,        screenY /*:int*/,
                                   clientX /*:int*/,        clientY /*:int*/,
                                   ctrlKey /*:Boolean*/,    altKey /*:Boolean*/,
                                   shiftKey /*:Boolean*/,   metaKey /*:Boolean*/,
                                   button /*:int*/,         relatedTarget /*:HTMLElement*/) /*:Void*/
    {

//check target
        target = YAHOO.util.Dom.get(target);
        if (!target){
            throw new Error("simulateMouseEvent(): Invalid target.");
        }

relatedTarget = relatedTarget || null;

//check event type
        if (YAHOO.lang.isString(type)){
            type = type.toLowerCase();
            switch(type){
                case "mouseover":
                case "mouseout":
                case "mousedown":
                case "mouseup":
                case "click":
                case "dblclick":
                case "mousemove":
                    break;
                default:
                    throw new Error("simulateMouseEvent(): Event type '" + type + "' not supported.");
            }
        } else {
            throw new Error("simulateMouseEvent(): Event type must be a string.");
        }

//setup default values
        if (!YAHOO.lang.isBoolean(bubbles)){
            bubbles = true; //all mouse events bubble
        }
        if (!YAHOO.lang.isBoolean(cancelable)){
            cancelable = (type != "mousemove"); //mousemove is the only one that can't be cancelled
        }
        if (!YAHOO.lang.isObject(view)){
            view = window; //view is typically window
        }
        if (!YAHOO.lang.isNumber(detail)){
            detail = 1;  //number of mouse clicks must be at least one
        }
        if (!YAHOO.lang.isNumber(screenX)){
            screenX = 0;
        }
        if (!YAHOO.lang.isNumber(screenY)){
            screenY = 0;
        }
        if (!YAHOO.lang.isNumber(clientX)){
            clientX = 0;
        }
        if (!YAHOO.lang.isNumber(clientY)){
            clientY = 0;
        }
        if (!YAHOO.lang.isBoolean(ctrlKey)){
            ctrlKey = false;
        }
        if (!YAHOO.lang.isBoolean(altKey)){
            altKey = false;
        }
        if (!YAHOO.lang.isBoolean(shiftKey)){
            shiftKey = false;
        }
        if (!YAHOO.lang.isBoolean(metaKey)){
            metaKey = false;
        }
        if (!YAHOO.lang.isNumber(button)){
            button = 0;
        }

//try to create a mouse event
        var customEvent /*:MouseEvent*/ = null;

//check for DOM-compliant browsers first
        if (YAHOO.lang.isFunction(document.createEvent)){

customEvent = document.createEvent("MouseEvents");

//Safari 2.x (WebKit 418) still doesn't implement initMouseEvent()
            if (customEvent.initMouseEvent){
                customEvent.initMouseEvent(type, bubbles, cancelable, view, detail,
                                     screenX, screenY, clientX, clientY,
                                     ctrlKey, altKey, shiftKey, metaKey,
                                     button, relatedTarget);
            } else { //Safari

//the closest thing available in Safari 2.x is UIEvents
                customEvent = document.createEvent("UIEvents");
                customEvent.initEvent(type, bubbles, cancelable);
                customEvent.view = view;
                customEvent.detail = detail;
                customEvent.screenX = screenX;
                customEvent.screenY = screenY;
                customEvent.clientX = clientX;
                customEvent.clientY = clientY;
                customEvent.ctrlKey = ctrlKey;
                customEvent.altKey = altKey;
                customEvent.metaKey = metaKey;
                customEvent.shiftKey = shiftKey;
                customEvent.button = button;
                customEvent.relatedTarget = relatedTarget;
            }

/*
             * Check to see if relatedTarget has been assigned. Firefox
             * versions less than 2.0 don't allow it to be assigned via
             * initMouseEvent() and the property is readonly after event
             * creation, so in order to keep YAHOO.util.getRelatedTarget()
             * working, assign to the IE proprietary toElement property
             * for mouseout event and fromElement property for mouseover
             * event.
             */
            if (relatedTarget && !customEvent.relatedTarget){
                if (type == "mouseout"){
                    customEvent.toElement = relatedTarget;
                } else if (type == "mouseover"){
                    customEvent.fromElement = relatedTarget;
                }
            }

//fire the event
            target.dispatchEvent(customEvent);

} else if (YAHOO.lang.isObject(document.createEventObject)){ //IE

//create an IE event object
            customEvent = document.createEventObject();

//assign available properties
            customEvent.bubbles = bubbles;
            customEvent.cancelable = cancelable;
            customEvent.view = view;
            customEvent.detail = detail;
            customEvent.screenX = screenX;
            customEvent.screenY = screenY;
            customEvent.clientX = clientX;
            customEvent.clientY = clientY;
            customEvent.ctrlKey = ctrlKey;
            customEvent.altKey = altKey;
            customEvent.metaKey = metaKey;
            customEvent.shiftKey = shiftKey;

//fix button property for IE's wacky implementation
            switch(button){
                case 0:
                    customEvent.button = 1;
                    break;
                case 1:
                    customEvent.button = 4;
                    break;
                case 2:
                    //leave as is
                    break;
                default:
                    customEvent.button = 0;
            }

/*
             * Have to use relatedTarget because IE won't allow assignment
             * to toElement or fromElement on generic events. This keeps
             * YAHOO.util.customEvent.getRelatedTarget() functional.
             */
            customEvent.relatedTarget = relatedTarget;

//fire the event
            target.fireEvent("on" + type, customEvent);

} else {
            throw new Error("simulateMouseEvent(): No event simulation framework present.");
        }
    },

//--------------------------------------------------------------------------
    // Mouse events
    //--------------------------------------------------------------------------

/**
     * Simulates a mouse event on a particular element.
     * @param {HTMLElement} target The element to click on.
     * @param {String} type The type of event to fire. This can be any one of
     *      the following: click, dblclick, mousedown, mouseup, mouseout,
     *      mouseover, and mousemove.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method mouseEvent
     * @static
     */
    fireMouseEvent : function (target /*:HTMLElement*/, type /*:String*/,
                           options /*:Object*/) /*:Void*/
    {
        options = options || {};
        this.simulateMouseEvent(target, type, options.bubbles,
            options.cancelable, options.view, options.detail, options.screenX,
            options.screenY, options.clientX, options.clientY, options.ctrlKey,
            options.altKey, options.shiftKey, options.metaKey, options.button,
            options.relatedTarget);
    },

/**
     * Simulates a click on a particular element.
     * @param {HTMLElement} target The element to click on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method click
     * @static
     */
    click : function (target /*:HTMLElement*/, options /*:Object*/) /*:Void*/ {
        this.fireMouseEvent(target, "click", options);
    },

/**
     * Simulates a double click on a particular element.
     * @param {HTMLElement} target The element to double click on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method dblclick
     * @static
     */
    dblclick : function (target /*:HTMLElement*/, options /*:Object*/) /*:Void*/ {
        this.fireMouseEvent( target, "dblclick", options);
    },

/**
     * Simulates a mousedown on a particular element.
     * @param {HTMLElement} target The element to act on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method mousedown
     * @static
     */
    mousedown : function (target /*:HTMLElement*/, options /*Object*/) /*:Void*/ {
        this.fireMouseEvent(target, "mousedown", options);
    },

/**
     * Simulates a mousemove on a particular element.
     * @param {HTMLElement} target The element to act on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method mousemove
     * @static
     */
    mousemove : function (target /*:HTMLElement*/, options /*Object*/) /*:Void*/ {
        this.fireMouseEvent(target, "mousemove", options);
    },

/**
     * Simulates a mouseout event on a particular element. Use "relatedTarget"
     * on the options object to specify where the mouse moved to.
     * Quirks: Firefox less than 2.0 doesn't set relatedTarget properly, so
     * toElement is assigned in its place. IE doesn't allow toElement to be
     * be assigned, so relatedTarget is assigned in its place. Both of these
     * concessions allow YAHOO.util.Event.getRelatedTarget() to work correctly
     * in both browsers.
     * @param {HTMLElement} target The element to act on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method mouseout
     * @static
     */
    mouseout : function (target /*:HTMLElement*/, options /*Object*/) /*:Void*/ {
        this.fireMouseEvent(target, "mouseout", options);
    },

/**
     * Simulates a mouseover event on a particular element. Use "relatedTarget"
     * on the options object to specify where the mouse moved from.
     * Quirks: Firefox less than 2.0 doesn't set relatedTarget properly, so
     * fromElement is assigned in its place. IE doesn't allow fromElement to be
     * be assigned, so relatedTarget is assigned in its place. Both of these
     * concessions allow YAHOO.util.Event.getRelatedTarget() to work correctly
     * in both browsers.
     * @param {HTMLElement} target The element to act on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method mouseover
     * @static
     */
    mouseover : function (target /*:HTMLElement*/, options /*Object*/) /*:Void*/ {
        this.fireMouseEvent(target, "mouseover", options);
    },

/**
     * Simulates a mouseup on a particular element.
     * @param {HTMLElement} target The element to act on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method mouseup
     * @static
     */
    mouseup : function (target /*:HTMLElement*/, options /*Object*/) /*:Void*/ {
        this.fireMouseEvent(target, "mouseup", options);
    },

//--------------------------------------------------------------------------
    // Key events
    //--------------------------------------------------------------------------

/**
     * Fires an event that normally would be fired by the keyboard (keyup,
     * keydown, keypress). Make sure to specify either keyCode or charCode as
     * an option.
     * @private
     * @param {String} type The type of event ("keyup", "keydown" or "keypress").
     * @param {HTMLElement} target The target of the event.
     * @param {Object} options Options for the event. Either keyCode or charCode
     *                         are required.
     * @method fireKeyEvent
     * @static
     */
    fireKeyEvent : function (type /*:String*/, target /*:HTMLElement*/,
                             options /*:Object*/) /*:Void*/
    {
        options = options || {};
        this.simulateKeyEvent(target, type, options.bubbles,
            options.cancelable, options.view, options.ctrlKey,
            options.altKey, options.shiftKey, options.metaKey,
            options.keyCode, options.charCode);
    },

/**
     * Simulates a keydown event on a particular element.
     * @param {HTMLElement} target The element to act on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method keydown
     * @static
     */
    keydown : function (target /*:HTMLElement*/, options /*:Object*/) /*:Void*/ {
        this.fireKeyEvent("keydown", target, options);
    },

/**
     * Simulates a keypress on a particular element.
     * @param {HTMLElement} target The element to act on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method keypress
     * @static
     */
    keypress : function (target /*:HTMLElement*/, options /*:Object*/) /*:Void*/ {
        this.fireKeyEvent("keypress", target, options);
    },

/**
     * Simulates a keyup event on a particular element.
     * @param {HTMLElement} target The element to act on.
     * @param {Object} options Additional event options (use DOM standard names).
     * @method keyup
     * @static
     */
    keyup : function (target /*:HTMLElement*/, options /*Object*/) /*:Void*/ {
        this.fireKeyEvent("keyup", target, options);
    }

};
YAHOO.register("event-simulate", YAHOO.util.UserAction, {version: "2.9.0", build: "2800"});

}, '2.9.0' ,{"requires": ["yui2-yahoo", "yui2-event"]});

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