class BarHandler: public Ctrl {
public:
	Ctrl *parent;
	BarCtrl* bar;
	bool left_down;
	Point left_point;
	
	BarHandler() : bar(0), parent(0), left_down(false) {}
	
	void UpdateLayout()
	{
		if (bar) {
			int align = bar->GetAlign();
			if (align == BarCtrl::BAR_LEFT || align == BarCtrl::BAR_RIGHT)
				TopPos(1, 4).HSizePosZ(2, 2);
			else
				VSizePosZ(2, 2).LeftPos(1, 4);
		}
	}
	
	void ParentChange()
	{
		bar = 0;
		VSizePos(2, 2).LeftPos(1, 4);
	}
	
	void InitCtrl()
	{
		Ctrl* ctrl = GetParent();
		while (ctrl) {
			bar = dynamic_cast<BarCtrl*>(ctrl);
			if (bar && (bar->IsToolBar() || bar->IsMenuBar())) {
				parent = bar->GetParent();
				break;
			} else {
				bar = 0;
			}
			ctrl = ctrl->GetParent();
		}	
	}
	void MouseLeave()
	{
		if (left_down)
			SetCapture();
	}
	
	void LeftDown(Point p, dword keyflags)
	{
		left_down = true;
		left_point = p;
		if (!bar || !parent)
			InitCtrl();
		if (bar && !bar->IsPopUp()) {
			Rect r = bar->GetScreenView();
			parent->RemoveFrame((CtrlFrame&)*bar);
			bar->SetRect(r.left , r.top, r.Width(), r.Height());
			bar->PopUp(NULL, true, true, true, true);
		}
	}
	void MouseMove(Point p, dword keyflags)
	{
		if (bar && left_down) {
			Rect r = bar->GetScreenView();
			bar->SetRect(p.x - left_point.x + r.left, p.y - left_point.y + r.top , r.Width(), r.Height());
		}
	}
	
	void LeftUp(Point p, dword keyflags)
	{
		left_down = false;
		int left, right, top, bottom;
		left = right = top = bottom = 0;
		if (bar && bar->IsPopUp()) {
			Rect pr = parent->GetRect();
			Point pt = GetMousePos();
			if (pr.Contains(pt)) {
				bar->Close();
				parent->AddFrame(*bar);
				left = pt.x - pr.left;
				right = pr.right - pt.x;
				top = pt.y - pr.top;
				bottom = pr.bottom - pt.y;
				if (left < right && left < top && left < bottom)
					bar->Left();
				if (right < left && right < top && right < bottom)
					bar->Right();
				if (top < left && top < right && top < bottom)
					bar->Top();
				if (bottom < left && bottom < right && bottom < top)
					bar->Bottom();
			}
		}
		ReleaseCapture();
		UpdateLayout();
	}
	
	void Paint(Draw& w)
	{
		ChPaint(w, GetSize(), CtrlImg::SmallDot());
	}
};