#include <CtrlLib/CtrlLib.h>

using namespace Upp;
// Choose the variant
#if 1
class CustomDropList : public DropList {
public:
	virtual bool Key(dword key, int count)
	{
		if (!IsPopUp() && key != K_ALT_DOWN)
			return false;

		return DropList::Key(key, count);
	}

	virtual void MouseWheel(Point p, int zdelta, dword keyflags)
	{
		if (!IsPopUp())
			return;

		DropList::MouseWheel(p, zdelta, keyflags);
	}
};
#else
class CustomDropList : public DropList {
public:
	virtual bool Key(dword key, int count)
	{
		if (!IsPopUp() && GetCount())
			if (key == K_LEFT || key == K_RIGHT || key == K_DOWN || key == K_UP)
				WhenDrop();
			else
			if (key >= 32 && key < 65536)
				return false;

		return DropList::Key(key, count);
	}

	virtual void MouseWheel(Point p, int zdelta, dword keyflags)
	{
		if (!IsPopUp() && GetCount())
			WhenDrop();

		DropList::MouseWheel(p, zdelta, keyflags);
	}
};
#endif

class App : public TopWindow {
public:
	typedef App CLASSNAME;
	App();

	ArrayCtrl event;
	CustomDropList list;

	void OnDrop();
	void OnAction();
};

App::App()
{
	Title("Custom DropList example");
	Sizeable().Zoomable();
	const Size sz(320, 240);
	SetRect(sz); SetMinSize(sz);

	event.NoWantFocus();
	event.AddRowNumColumn("#").HeaderTab().Fixed(50);
	event.AddColumn("Event");

	list.WhenDrop = THISBACK(OnDrop);
	list.WhenAction = THISBACK(OnAction);

	for (int i = 1; i <= 100; ++i)
		list.Add(FormatIntRoman(i, true));

	Add(event.VSizePosZ(4, 27).HSizePosZ(4, 4));
	Add(list.BottomPosZ(4, 19).HSizePosZ(4, 4));
}

const int rowCount = 1000;

void App::OnDrop()
{
	GuiLock __;
	if (event.GetCount() > rowCount)
		event.Clear();

	event.Add("WhenDrop");
	event.GoEnd();
}

void App::OnAction()
{
	GuiLock __;
	if (event.GetCount() > rowCount)
		event.Clear();

	event.Add("WhenAction");
	event.GoEnd();
}

GUI_APP_MAIN
{
	Ctrl::GlobalBackPaint();

	App app;
	app.Run();
}