/**
 * Event Manager sur Pages de resultats 'old school'...
 */
(function() {
	var window = this,
			document = window.document;

	window.LEFT_BUTTON = 1;
	window.RIGHT_BUTTON = 2;
	window.CAN_USE_DHTML = window.canUseDHTML();
	window.CAN_USE_DOM = window.canUseW3CDOM();
	//alert('can use DHTML = '+window.CAN_USE_DHTML);
	//alert('can use W3C DOM = '+window.CAN_USE_DOM);
	var mozReconnu = false;
	function eventDetails(e) {
		var desc = 'EventObject[';
		desc += 'type:' + e.type + ', btn:' + e.mouseButton + ', key:' + e.keyCode;
		desc += ',\noffset:' + e.offsetX + ' ' + e.offsetY;
		desc += ',\nclient:' + e.clientX + ' ' + e.clientY;
		desc += ',\npageIE:' + e.x + ' ' + e.y;
		desc += ',\npage:' + e.pageX + ' ' + e.pageY;
		if (e.srcElement) {
			desc += ',\nsrc:' + e.srcElement.id;
			if (e.srcElement.parentElement) {
				desc += ' < ' + e.srcElement.parentElement.id;
			}
		}
		if (e.fromElement) {
			e += ',\nfrom:' + e.fromElement.id;
			if (e.fromElement.parentElement) {
				desc += ' < ' + e.fromElement.parentElement.id;
			}
		}
		if (e.toElement) {
			desc += ',\nto:' + e.toElement.id;
			if (e.toElement.parentElement) {
				desc += ' < ' + e.toElement.parentElement.id;
			}
		}
		desc += ']';
		return desc;
	}
	function checkEventObject(e) {
		if (window.event) {
			e = window.event;
		}
		if (e === undefined || e === null) {
			return null;
		}
		e.mouseButton = e.button;
		//    recordEvent(mozReconnu);
		//    recordProps(e,'srcElement',new Array('id','parentElement','parentNode'));
		if (mozReconnu || e.srcElement === undefined) {
			mozReconnu = true;
			if (e.type === 'mouseout') {
				e.srcElement = e.target;
				e.fromElement = e.originalTarget;
				e.toElement = e.relatedTarget;
			}else if (e.type === 'mouseover') {
				e.srcElement = e.target;
				e.fromElement = e.relatedTarget;
				e.toElement = e.originalTarget;
			}else if (e.type === 'mousemove' || e.type === 'mousedown' || e.type === 'mouseup') {
				e.srcElement = e.target;
				e.fromElement = null;
				e.toElement = null;
			}
			if (!e.mouseButton) {
				e.mouseButton = 1;
			}
			if (e.srcElement && e.srcElement.parentElement === undefined && e.srcElement.parentNode !== undefined) {
				e.srcElement.parentElement = e.srcElement.parentNode;
			}
			if (e.fromElement && e.fromElement.parentElement === undefined && e.fromElement.parentNode !== undefined) {
				e.fromElement.parentElement = e.fromElement.parentNode;
			}
			if (e.toElement && e.toElement.parentElement === undefined && e.toElement.parentNode !== undefined) {
				e.toElement.parentElement = e.toElement.parentNode;
			}
			e.offsetX = e.layerX;
			e.offsetY = e.layerY;
		}
		e.toString = function() { return eventDetails(this); };
		return e;
	}
	function PropagationListener(stopper) {
		if (stopper) {
			this.doEvent = function(e) {
				if (e.preventDefault) {
					e.preventDefault();
				}
				return false;
			};
		} else {
			this.doEvent = function() { return true; };
		}
	}
	function EventManager(cancelPropagation,eventName) {
		this.eventNames = [];
		if (eventName !== undefined) {
			this.eventNames[0] = eventName;
		}
		this.listeners = [];
		this.lastEvent = null;
		this.onEvent = function(e, debug) {
			try {
				this.lastEvent = checkEventObject(e);
				if (this.lastEvent) {
					if (this.listeners.length) {
						for (var i = 1; i < this.listeners.length; ++i) {
							if (this.listeners[i]) {
								this.listeners[i].doEvent(this.lastEvent);
							}
						}
						if (this.listeners[0]) { return this.listeners[0].doEvent(this.lastEvent); }
						//if(this.listeners[0]){ this.listeners[0].doEvent(this.lastEvent); }
					}
				}
				return true;
			}catch (err) {
				return true;
			}
		};
		this.addEventListener = function(listener) {
			if (listener.doEvent) {
				this.listeners[this.listeners.length] = listener;
			}
		};
		this.addEvent = function(eventName) {
			this.eventNames[this.eventNames.length] = eventName;
			if (window.captureEvents && window.Event) {
				window.captureEvents(window.Event[eventName]);
			}
		};
		//add one first lisener
		this.addEventListener(new PropagationListener(cancelPropagation));
	}
	window.MouseListener = function() {
		this.doEvent = function(e) {
			switch (e.type) {
				case 'mousedown': if (this.mouseDown) { this.mouseDown(e);} break;
				case 'mouseup': if (this.mouseUp) { this.mouseUp(e);} break;
				case 'mouseover': if (this.mouseOver) { this.mouseOver(e);} break;
				case 'mouseout': if (this.mouseOut) { this.mouseOut(e);} break;
				case 'mousemove': if (this.mouseMove) { this.mouseMove(e);} break;
			}
		};
	};

	//window.mouseEventManager=new EventManager(true);
	window.mouseEventManager = new EventManager(false);
	window.mouseEventManager.addEvent('MOUSEDOWN');
	window.mouseEventManager.addEvent('MOUSEUP');
	//window.mouseEventManager.addEvent("MOUSEOVER");
	window.mouseEventManager.addEvent('MOUSEOUT');
	window.mouseEventManager.addEvent('MOUSEMOVE');
	window.keyDownEvtMngr = new EventManager(false, 'KEYDOWN');
	//window.cancellerEvtMngr = new EventManager(true, 'ERROR');

	// delegates
	function onMouseEvent(e) { return window.mouseEventManager.onEvent(e); }
	function onKeyDownEvent(e) { return window.keyDownEvtMngr.onEvent(e); }
	//function onCancellerEvent(e) { return window.cancellerEvtMngr.onEvent(e); }

	//document.oncontextmenu=onCancellerEvent;
	//document.onselectstart=onCancellerEvent;
	if (document.layers) {
		window.onmousedown = onMouseEvent;
		window.onmouseup = onMouseEvent;
		window.onmouseover = onMouseEvent;
		window.onmouseout = onMouseEvent;
		window.onmousemove = onMouseEvent;
		window.onkeydown = onKeyDownEvent;
	}else {
		document.onmousedown = onMouseEvent;
		document.onmouseup = onMouseEvent;
		document.onmouseover = onMouseEvent;
		document.onmouseout = onMouseEvent;
		document.onmousemove = onMouseEvent;
		document.onkeydown = onKeyDownEvent;
	}
}());