if (!window.RichFaces) window.RichFaces = {};

var RichFaces_FF_Loaded = (RichFaces.navigatorType() == RichFaces.FF);

RichFaces.panelTabs={};
RichFaces.tabPanel={};

RichFaces.createImage =
	function (src) {
		var img = new Image();
		img.src = src;
		return img;
	}

RichFaces.setLabelImages =
	function (element, image, mouseoverimage) {
		element = $(element);
		if (element) {
			element._image = this.createImage(image);
			element._mouseoverimage = this.createImage(mouseoverimage);
		}
	}

RichFaces.isTabActive = function (tabId) {
	var tab = $(tabId);
	if (tab) {
		return Element.hasClassName(tab, "rich-tab-active");
	}
	
	return false;
}

RichFaces.switchTab = function(pane,tab,value){
	var labelSuffix = "_lbl";
	var cellSuffix = "_cell";
	var shiftedTableSuffix = "_shifted";
	var contentSuffix = "";
	var tabs = RichFaces.panelTabs[pane];
	var activeTab;
	var FF = RichFaces_FF_Loaded;
	if(tabs){
		for( var i=0; i<tabs.length; i++){

			var tabi = tabs[i];
			var tabId = tabi.id;
			var tabElement = $(tabId + contentSuffix);
			var tabLabelId = tabId +labelSuffix;
			var tabLabel = $(tabLabelId);
			
			var tabCellId = tabId + cellSuffix;
			var tabCell = $(tabCellId);

			var shiftedTable = $(tabId + shiftedTableSuffix);

			if (tabId == tab) {
				if(tabElement) {
					Element.show(tabElement);
				}
				activeTab = tabi;
				if (!FF) {
					if (tabLabel) {
						tabLabel.className = tabi.activeClass;
					}
					
					if (tabCell) {
						tabCell.className = tabi.cellActiveClass;
					}
					
				}
				
			} else {
				if (tabElement) {
					Element.hide(tabElement);
				}
				if (tabLabel) {
					tabLabel.className = tabi.inactiveClass;
				}
				if (tabCell) {
					tabCell.className = tabi.cellInactiveClass;
				}
				if(shiftedTable) {
					shiftedTable.style.top = "0px";
				}
			}
		}
		
	}
	
	
	if (FF && activeTab) {
		
		var tabLbl = $(activeTab.id + labelSuffix);
		var tabCell = $(activeTab.id + cellSuffix);
		
		if (!tabLbl || !tabLabel
				|| !tabCell ) {
			return;
		}
		
		var parentTable = RichFaces.findNestingTable(tabLbl);
		var par = parentTable.parentNode;
		var bro = parentTable.nextSibling;
		
		par.removeChild(parentTable);
		tabLbl.className = activeTab.activeClass;
		par.insertBefore(parentTable, bro);

		parentTable = RichFaces.findNestingTable(tabCell);
		par = parentTable.parentNode;
		bro = parentTable.nextSibling;
		
		par.removeChild(parentTable);
		tabCell.className = activeTab.cellActiveClass;
		par.insertBefore(parentTable, bro);

	}
	
	//shift down active tab to cover bottom border
	$(tab+'_shifted').style.top = "1px";
		
	// Set value field.
	$(pane+"_input").value=value;
}

RichFaces.findNestingTable = function(tablabel) {
	var parent = tablabel.parentNode;
	
	while(parent && parent.nodeName.toLowerCase() != 'table') {
		parent = parent.parentNode;
	}
	
	return parent;
}

RichFaces.overTab = function(tab) {
	if (RichFaces._shouldHoverTab(tab)) {
		Element.addClassName(tab, 'rich-tbpnl-tb-sel');
	}
}
RichFaces.outTab = function(tab) {
	if (RichFaces._shouldHoverTab(tab)) {
		Element.removeClassName(tab, 'rich-tbpnl-tb-sel');
	}
}

RichFaces._shouldHoverTab = function(tab) {
	return (tab.className.indexOf('rich-tab-active') < 0);
}

RichFaces.onTabChange = function(event, pane,tab) {
	var labelSuffix = "_lbl";
	var tabs = RichFaces.panelTabs[pane];
	var lastActive, newActive;
	if (tabs) {
		for( var i=0; i<tabs.length; i++){
			if (lastActive && newActive) break;
			var tabId = tabs[i].id;
			if (tabId == tab) 
				newActive = tabs[i];
			if (RichFaces.isTabActive(tabId +labelSuffix)) 
				lastActive = tabs[i];
		}	
	}
	if (lastActive && newActive) {
		
		if(event){
			event.leftTabName = lastActive.name;		
			event.enteredTabName = newActive.name;
		}	
		
		if (lastActive.ontableave && lastActive.ontableave != "") {
			var func = new Function("event",lastActive.ontableave);
			var result = func(event);
			if (typeof(result) == 'boolean' && !result) return false;
		}
		if (newActive.ontabenter && newActive.ontabenter != "") {
			var func = new Function("event",newActive.ontabenter);
			var result = func(event);
			if (typeof(result) == 'boolean' && !result) return false;
		}
		try{

		var tabPanel = RichFaces.tabPanel[pane];
		
		if (tabPanel.ontabchange && tabPanel.ontabchange != "") {
				var func = new Function("event",tabPanel.ontabchange);
				var result = func(event);
				if (typeof(result) == 'boolean' && !result) return false;
		}

      }catch(e){
         //todo - waiting for portal friendly code rewrite
      }

   }
	return true;
}