class ExpressPane : public Ctrl {
	struct SlaveControl {
	    bool isInSplitter;
	    Ctrl* slave;
	};	
	Array<Button> closer;
	Array<SlaveControl> slaves;
	Splitter splitter;

	static const int BTN_SPACE = 22;
	typedef ExpressPane CLASSNAME;

	int btnIndx;	
	void Toggle(int);
public:
	void Add(const char *text, Ctrl& slave);
	ExpressPane();
};

ExpressPane::ExpressPane(){
	Ctrl::Add(splitter);
	splitter.Vert();
}
void ExpressPane::Toggle(int indx){
	slaves[indx].isInSplitter = slaves[indx].isInSplitter == true ? false:true; 

	for(int loopI=slaves.GetCount()-1; loopI>-1; loopI--){
		splitter.RemoveChild( slaves[loopI].slave );
		if (slaves[loopI].isInSplitter == true){
			splitter << *slaves[loopI].slave;
		}
	}
	splitter.RefreshLayout();
}
void ExpressPane::Add(const char *text, Ctrl& slave){

	Button* button = new Button;
	Callback argCB = callback1(this,Toggle, btnIndx++);
	*button <<= argCB;
	button->SetLabel(text);
	button->HSizePosZ(0, 0).BottomPosZ(BTN_SPACE * (btnIndx-1), BTN_SPACE -2);
	splitter.HSizePosZ(0, 0).VSizePosZ(0, BTN_SPACE * btnIndx);
	Ctrl::Add(*button);
	closer.Add(button);

	SlaveControl slvCtrl;
	slvCtrl.isInSplitter = false;
	slvCtrl.slave = &slave; 
	slaves.Add(slvCtrl);
}