#include <CtrlLib/CtrlLib.h>

using namespace Upp;

class EditStringSpin : public EditString {
protected:
	Vector<String> data;
	int index;
public:
	typedef EditStringSpin CLASSNAME;
	EditStringSpin();

	SpinButtons sb;

	void ShowData()      { index >= 0 ? SetText(data[index]) : SetText(String()); }
	void Inc();
	void Dec();
	void SetIndex(int i);
	int GetIndex() const { return index; }
	void GoBegin()       { SetIndex(0); }
	void GoEnd()         { SetIndex(data.GetCount() - 1); }

	virtual bool Key(dword key, int count);
	virtual void MouseWheel(Point p, int zdelta, dword keyflags);

	void SetValue(int i, const String& v);
	void SetValue(const String& v);
	String GetValue(int i) const;
	String GetValue() const;
	const Vector<String>& GetValues() const             { return data; }
	int GetCount() const                                { return data.GetCount(); }
	EditStringSpin& Add(const String& v)                { data.Add(v); return *this; }
	EditStringSpin& Add(const Vector<String>& v)        { data.Append(v); return *this; }
	void Clear()                                        { index = -1; data.Clear(); ShowData(); }
};

EditStringSpin::EditStringSpin() : index(-1)
{
	sb.inc.WhenRepeat = sb.inc.WhenAction = THISBACK(Inc);
	sb.dec.WhenRepeat = sb.dec.WhenAction = THISBACK(Dec);
	AddFrame(sb);
}

void EditStringSpin::Inc()
{
	const int count = data.GetCount() - 1;
	if (++index > count)
		index = count;

	ShowData();
}

void EditStringSpin::Dec()
{
	if (data.GetCount() && --index < 0)
		index = 0;

	ShowData();
}

void EditStringSpin::SetIndex(int i)
{
	if (index == i)
		return;

	const int count = data.GetCount() - 1;

	if (i < 0)
		index = -1;
	else
	if (i > count)
		index = count;
	else
		index = i;

	ShowData();
}

bool EditStringSpin::Key(dword key, int count)
{
	switch (key) {
	case K_UP:
		Inc(); return true;
	case K_DOWN:
		Dec(); return true;
	default:
		return EditString::Key(key, count);
	}
}

void EditStringSpin::MouseWheel(Point p, int zdelta, dword keyflags)
{
	zdelta > 0 ? Inc() : Dec();
}

void EditStringSpin::SetValue(int i, const String& v)
{
	ASSERT(i >= 0 && i < data.GetCount());
	data[i] = v;
	if (index == i)
		ShowData();
}

void EditStringSpin::SetValue(const String& v)
{
	if (index < 0)
		return;
	data[index] = v;
	ShowData();
}

String EditStringSpin::GetValue(int i) const
{
	ASSERT(i >= 0 && i < data.GetCount());
	return data[i];
}

String EditStringSpin::GetValue() const
{
	if (index < 0)
		return String::GetVoid();

	return data[index];
}

class App : public TopWindow {
public:
	typedef App CLASSNAME;
	App();
	// Ctrls
	EditStringSpin edit;
	Button btnFill, btnClear;
	// Events
	void OnClear();
	void OnFill();
};

App::App()
{
	Title("EditStringSpin example");
	const Size sz(240, 180);
	SetRect(sz); SetMinSize(sz);

	edit.SetReadOnly();
	OnFill();

	btnFill.SetLabel("Fill") <<= THISBACK(OnFill);
	btnClear.SetLabel("Clear") <<= THISBACK(OnClear);

	Add(edit.LeftPosZ(4, 100).TopPosZ(4, 20));
	Add(btnFill.LeftPosZ(4, 48).TopPosZ(28, 20));
	Add(btnClear.LeftPosZ(56, 48).TopPosZ(28, 20));
}

void App::OnClear()
{
	edit.Clear();
}

void App::OnFill()
{
	OnClear();

	for (int i = 0; i < 10; ++i)
		edit.Add(NFormat("Data #%d", i + 1));

	edit.GoBegin();
}

GUI_APP_MAIN
{
	Ctrl::GlobalBackPaint();

	App app;
	app.Run();
}