/*  
* jquery.simulate - simulate browser mouse and keyboard events  
*  
* Copyright (c) 2009 Eduardo Lundgren (eduardolundgren@gmail.com)  
* and Richard D. Worth (rdworth@gmail.com)  
*  
* Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)  
* and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.  
*  
*/  

;(function($) {  

$.fn.extend({  
        simulate: function(type, options) {  
                return this.each(function() {  
                        var opt = $.extend({}, $.simulate.defaults, options || {});  
                        new $.simulate(this, type, opt);  
                });  
        }  
});  
 
$.simulate = function(el, type, options) {  
        this.target  = el;  
        this.options = options;  
 
        if (/^drag$/.test(type)) {  
                this[type].apply(this, [this.target, options]);  
        } else {  
                this.simulateEvent(el, type, options);  
        }  
}  
 
$.extend($.simulate.prototype, {  
        simulateEvent: function(el, type, options) {  
                var evt = this.createEvent(type, options);  
                this.dispatchEvent(el, type, evt, options);  
                return evt;  
        },  
        createEvent: function(type, options) {  
                if (/^mouse(over|out|down|up|move)|(dbl)?click$/.test(type)) {  
                        return this.mouseEvent(type, options);  
                } else if (/^key(up|down|press)$/.test(type)) {  
                        return this.keyboardEvent(type, options);  
                }  
        },  
        mouseEvent: function(type, options) {  
                var evt;  
                var e             = $.extend({bubbles: true, cancelable: (type != "mousemove"), view: window, detail: 0, screenX: 0, screenY: 0, clientX: 0, clientY: 0,ctrlKey: false, altKey: false, shiftKey: false, metaKey: false,button: 0, relatedTarget: undefined}, options);   
                var relatedTarget = $(e.relatedTarget)[0];  
 
                if ($.isFunction(document.createEvent)) {  
                        evt = document.createEvent("MouseEvents");  
                        evt.initMouseEvent(type, e.bubbles, e.cancelable, e.view, e.detail,e.screenX, e.screenY, e.clientX, e.clientY,e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,e.button, e.relatedTarget || document.body.parentNode);  
                } else if (document.createEventObject) {  
                        evt = document.createEventObject();  
                        $.extend(evt, e);  
                        evt.button = { 0:1, 1:4, 2:2 }[evt.button] || evt.button;  
                }  
                return evt;  
        },  
        keyboardEvent: function(type, options) {  
                var evt;  
                var e = $.extend({ bubbles: true, cancelable: true, view: window,ctrlKey: false, altKey: false, shiftKey: false, metaKey: false,keyCode: 0, charCode: 0}, options);  
                if ($.isFunction(document.createEvent)) {  
                   try {  
                       evt = document.createEvent("KeyEvents");  
                       evt.initKeyEvent(type, e.bubbles, e.cancelable, e.view,e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,e.keyCode, e.charCode);  
                   } catch(err) {  
                       evt = document.createEvent("Events");  
                       evt.initEvent(type, e.bubbles, e.cancelable);  
                       $.extend(evt, { view: e.view,ctrlKey: e.ctrlKey, altKey: e.altKey, shiftKey: e.shiftKey, metaKey: e.metaKey,keyCode: e.keyCode, charCode: e.charCode});  
                   }  
                } else if (document.createEventObject) {  
                      evt = document.createEventObject();  
                      $.extend(evt, e);  
                }  
                if ($.browser.msie || $.browser.opera) {  
                   evt.keyCode = (e.charCode > 0) ? e.charCode : e.keyCode;  
                   evt.charCode = undefined;  
                }  
                return evt;  
         },  
  
         dispatchEvent: function(el, type, evt) {  
                 if (el.dispatchEvent) {  
                    el.dispatchEvent(evt);  
                 } else if (el.fireEvent) {  
                    el.fireEvent('on' + type, evt);  
                 }  
                 return evt;  
         },  
  
         drag: function(el) {  
                 var self    = this;
                 var center  = this.findCenter(this.target);
                 var options = this.options;
                 var x       = Math.floor(center.x);
                 var y       = Math.floor(center.y);
                 var dx      = options.dx || 0;
                 var dy      = options.dy || 0; 
                 var target  = this.target;  
                 var coord   = { clientX: x, clientY: y };  

                 this.simulateEvent(target, "mousedown", coord);  
                 coord = { clientX: x + 1, clientY: y + 1 };  
                 this.simulateEvent(document, "mousemove", coord);  
                 coord = { clientX: x + dx, clientY: y + dy };  
                 this.simulateEvent(document, "mousemove", coord);  
                 this.simulateEvent(document, "mousemove", coord);  
                 this.simulateEvent(target, "mouseup", coord);  
         },  
         findCenter: function(el) {  
                 var el = $(this.target);
                 var o  = el.offset();  
                 return {x: o.left + el.outerWidth() / 2,y: o.top + el.outerHeight() / 2};  
         }  
 });  
  
 $.extend($.simulate, {  
         defaults: {  
                 speed: 'sync'  
         },  
         VK_TAB: 9,  
         VK_ENTER: 13,
         VK_ESC: 27,  
         VK_PGUP: 33,  
         VK_PGDN: 34,  
         VK_END: 35,  
         VK_HOME: 36,  
         VK_LEFT: 37,  
         VK_UP: 38,  
         VK_RIGHT: 39,  
         VK_DOWN: 40  
 });  
  
 })(jQuery);