/*	Copyright (c) 2004-2006, The Dojo Foundation	All Rights Reserved.	Licensed under the Academic Free License version 2.1 or above OR the	modified BSD license. For more information on Dojo licensing, see:		http://dojotoolkit.org/community/licensing.shtml*/dojo.provide("dojo.event.browser");dojo.require("dojo.event");// FIXME: any particular reason this is in the global scope?dojo._ie_clobber = new function(){	this.clobberNodes = [];	function nukeProp(node, prop){		// try{ node.removeAttribute(prop); 	}catch(e){ /* squelch */ }		try{ node[prop] = null; 			}catch(e){ /* squelch */ }		try{ delete node[prop]; 			}catch(e){ /* squelch */ }		// FIXME: JotLive needs this, but I'm not sure if it's too slow or not		try{ node.removeAttribute(prop);	}catch(e){ /* squelch */ }	}	this.clobber = function(nodeRef){		var na;		var tna;		if(nodeRef){			tna = nodeRef.all || nodeRef.getElementsByTagName("*");			na = [nodeRef];			for(var x=0; x<tna.length; x++){				// if we're gonna be clobbering the thing, at least make sure				// we aren't trying to do it twice				if(tna[x]["__doClobber__"]){					na.push(tna[x]);				}			}		}else{			try{ window.onload = null; }catch(e){}			na = (this.clobberNodes.length) ? this.clobberNodes : document.all;		}		tna = null;		var basis = {};		for(var i = na.length-1; i>=0; i=i-1){			var el = na[i];			if(el["__clobberAttrs__"]){				for(var j=0; j<el.__clobberAttrs__.length; j++){					nukeProp(el, el.__clobberAttrs__[j]);				}				nukeProp(el, "__clobberAttrs__");				nukeProp(el, "__doClobber__");			}		}		na = null;	}}if(dojo.render.html.ie){	dojo.addOnUnload(function(){		dojo._ie_clobber.clobber();		try{			if((dojo["widget"])&&(dojo.widget["manager"])){				dojo.widget.manager.destroyAll();			}		}catch(e){}		try{ window.onload = null; }catch(e){}		try{ window.onunload = null; }catch(e){}		dojo._ie_clobber.clobberNodes = [];		// CollectGarbage();	});}dojo.event.browser = new function(){	var clobberIdx = 0;	this.clean = function(node){		if(dojo.render.html.ie){ 			dojo._ie_clobber.clobber(node);		}	}	this.addClobberNode = function(node){		if(!dojo.render.html.ie){ return; }		if(!node["__doClobber__"]){			node.__doClobber__ = true;			dojo._ie_clobber.clobberNodes.push(node);			// this might not be the most efficient thing to do, but it's			// much less error prone than other approaches which were			// previously tried and failed			node.__clobberAttrs__ = [];		}	}	this.addClobberNodeAttrs = function(node, props){		if(!dojo.render.html.ie){ return; }		this.addClobberNode(node);		for(var x=0; x<props.length; x++){			node.__clobberAttrs__.push(props[x]);		}	}	this.removeListener = function(node, evtName, fp, capture){		if(!capture){ var capture = false; }		evtName = evtName.toLowerCase();		if(evtName.substr(0,2)=="on"){ evtName = evtName.substr(2); }		// FIXME: this is mostly a punt, we aren't actually doing anything on IE		if(node.removeEventListener){			node.removeEventListener(evtName, fp, capture);		}	}	this.addListener = function(node, evtName, fp, capture, dontFix){		if(!node){ return; } // FIXME: log and/or bail?		if(!capture){ var capture = false; }		evtName = evtName.toLowerCase();		if(evtName.substr(0,2)!="on"){ evtName = "on"+evtName; }		if(!dontFix){			// build yet another closure around fp in order to inject fixEvent			// around the resulting event			var newfp = function(evt){				if(!evt){ evt = window.event; }				var ret = fp(dojo.event.browser.fixEvent(evt, this));				if(capture){					dojo.event.browser.stopEvent(evt);				}				return ret;			}		}else{			newfp = fp;		}		if(node.addEventListener){ 			node.addEventListener(evtName.substr(2), newfp, capture);			return newfp;		}else{			if(typeof node[evtName] == "function" ){				var oldEvt = node[evtName];				node[evtName] = function(e){					oldEvt(e);					return newfp(e);				}			}else{				node[evtName]=newfp;			}			if(dojo.render.html.ie){				this.addClobberNodeAttrs(node, [evtName]);			}			return newfp;		}	}	this.isEvent = function(obj){		// FIXME: event detection hack ... could test for additional attributes		// if necessary		return (typeof obj != "undefined")&&(typeof Event != "undefined")&&(obj.eventPhase);		// Event does not support instanceof in Opera, otherwise:		//return (typeof Event != "undefined")&&(obj instanceof Event);	}	this.currentEvent = null;		this.callListener = function(listener, curTarget){		if(typeof listener != 'function'){			dojo.raise("listener not a function: " + listener);		}		dojo.event.browser.currentEvent.currentTarget = curTarget;		return listener.call(curTarget, dojo.event.browser.currentEvent);	}	this.stopPropagation = function(){		dojo.event.browser.currentEvent.cancelBubble = true;	}	this.preventDefault = function(){	  dojo.event.browser.currentEvent.returnValue = false;	}	this.keys = {		KEY_BACKSPACE: 8,		KEY_TAB: 9,		KEY_ENTER: 13,		KEY_SHIFT: 16,		KEY_CTRL: 17,		KEY_ALT: 18,		KEY_PAUSE: 19,		KEY_CAPS_LOCK: 20,		KEY_ESCAPE: 27,		KEY_SPACE: 32,		KEY_PAGE_UP: 33,		KEY_PAGE_DOWN: 34,		KEY_END: 35,		KEY_HOME: 36,		KEY_LEFT_ARROW: 37,		KEY_UP_ARROW: 38,		KEY_RIGHT_ARROW: 39,		KEY_DOWN_ARROW: 40,		KEY_INSERT: 45,		KEY_DELETE: 46,		KEY_LEFT_WINDOW: 91,		KEY_RIGHT_WINDOW: 92,		KEY_SELECT: 93,		KEY_F1: 112,		KEY_F2: 113,		KEY_F3: 114,		KEY_F4: 115,		KEY_F5: 116,		KEY_F6: 117,		KEY_F7: 118,		KEY_F8: 119,		KEY_F9: 120,		KEY_F10: 121,		KEY_F11: 122,		KEY_F12: 123,		KEY_NUM_LOCK: 144,		KEY_SCROLL_LOCK: 145	};	// reverse lookup	this.revKeys = [];	for(var key in this.keys){		this.revKeys[this.keys[key]] = key;	}	this.fixEvent = function(evt, sender){		if((!evt)&&(window["event"])){			var evt = window.event;		}				if((evt["type"])&&(evt["type"].indexOf("key") == 0)){ // key events			evt.keys = this.revKeys;			// FIXME: how can we eliminate this iteration?			for(var key in this.keys) {				evt[key] = this.keys[key];			}			if((dojo.render.html.ie)&&(evt["type"] == "keypress")){				evt.charCode = evt.keyCode;			}		}			if(dojo.render.html.ie){			if(!evt.target){ evt.target = evt.srcElement; }			if(!evt.currentTarget){ evt.currentTarget = (sender ? sender : evt.srcElement); }			if(!evt.layerX){ evt.layerX = evt.offsetX; }			if(!evt.layerY){ evt.layerY = evt.offsetY; }			// FIXME: scroll position query is duped from dojo.html to avoid dependency on that entire module			var docBody = ((dojo.render.html.ie55)||(document["compatMode"] == "BackCompat")) ? document.body : document.documentElement;			if(!evt.pageX){ evt.pageX = evt.clientX + (docBody.scrollLeft || 0) }			if(!evt.pageY){ evt.pageY = evt.clientY + (docBody.scrollTop || 0) }			// mouseover			if(evt.type == "mouseover"){ evt.relatedTarget = evt.fromElement; }			// mouseout			if(evt.type == "mouseout"){ evt.relatedTarget = evt.toElement; }			this.currentEvent = evt;			evt.callListener = this.callListener;			evt.stopPropagation = this.stopPropagation;			evt.preventDefault = this.preventDefault;		}		return evt;	}	this.stopEvent = function(ev) {		if(window.event){			ev.returnValue = false;			ev.cancelBubble = true;		}else{			ev.preventDefault();			ev.stopPropagation();		}	}}