//////////////////////////////////////////////////////////////////////////
//
// pgAdmin III - PostgreSQL Tools
//
// Copyright (C) 2002 - 2013, The pgAdmin Development Team
// This software is released under the PostgreSQL Licence
//
// timespin.cpp - timeSpin SpinCtrl
//
//////////////////////////////////////////////////////////////////////////

#include "pgAdmin3.h"

#include <wx/wx.h>
#include "ctl/timespin.h"


#define CTRLID_TXT  101
#define CTRLID_SPN  102


BEGIN_EVENT_TABLE(wxTimeSpinCtrl, wxControl)
	EVT_TEXT(CTRLID_TXT, wxTimeSpinCtrl::OnText)
	EVT_NAVIGATION_KEY(wxTimeSpinCtrl::OnNavigate)
	EVT_SPIN_UP(CTRLID_SPN, wxTimeSpinCtrl::OnSpinUp)
	EVT_SPIN_DOWN(CTRLID_SPN, wxTimeSpinCtrl::OnSpinDown)
	EVT_SET_FOCUS(wxTimeSpinCtrl::OnSetFocus)
	EVT_SIZE(wxTimeSpinCtrl::OnSize)
END_EVENT_TABLE()


IMPLEMENT_DYNAMIC_CLASS(wxTimeSpinCtrl, wxControl)


wxTimeSpinCtrl::wxTimeSpinCtrl(wxWindow *parent,
                               wxWindowID id,
                               const wxPoint &pos,
                               const wxSize &size,
                               long style,
                               const wxString &name)
{
	Init();
	Create(parent, id, pos, size, style, name);
}


bool wxTimeSpinCtrl::Create(wxWindow *parent,
                            wxWindowID id,
                            const wxPoint &pos,
                            const wxSize &size,
                            long style,
                            const wxString &name)
{
	wxControl::Create(parent, id, pos, size, style & ~(wxSP_WRAP | wxSP_ARROW_KEYS), wxDefaultValidator, name);
	SetFont(parent->GetFont());

	m_spn = new wxSpinButton(this, CTRLID_SPN, wxDefaultPosition, wxDefaultSize, wxSP_WRAP | wxSP_VERTICAL | (style & wxSP_ARROW_KEYS));

	wxSize cs = GetClientSize();
	wxSize ss = m_spn->GetBestSize();

	m_txt = new wxTextCtrl(this, CTRLID_TXT, wxEmptyString, wxPoint(0, 0), wxSize(cs.x - ss.x, cs.y), wxWANTS_CHARS);
	m_txt->Connect(wxID_ANY, wxID_ANY, wxEVT_KEY_DOWN, wxKeyEventHandler(wxTimeSpinCtrl::OnEditKey), 0, this);
	m_txt->Connect(wxID_ANY, wxID_ANY, wxEVT_KILL_FOCUS, wxFocusEventHandler(wxTimeSpinCtrl::OnKillFocus), 0, this);

	wxArrayString valArray;
	wxChar c;
	for (c = '0'; c <= '9'; c++)
		valArray.Add(wxString(c, 1));
	valArray.Add(wxT(":"));
	wxTextValidator tv(wxFILTER_INCLUDE_CHAR_LIST);
	tv.SetIncludes(valArray);
	m_txt->SetValidator(tv);

	m_spn->SetSize(ss.x, cs.y);
	m_spn->SetPosition(wxPoint(cs.x - ss.x, 0));

	canWrap = (style & wxSP_WRAP) != 0;
	SetMax(24 * 60 * 60 - 1);

	SetInitialSize(size);

	return true;
}

#define TXTPOSX 0
#define TXTPOSY 0
void wxTimeSpinCtrl::OnSize(wxSizeEvent &event)
{
	if ( m_spn )
	{
		wxSize sz = GetClientSize();

		wxSize ss = m_spn->GetSize();
		int eh = m_txt->GetBestSize().y;

		m_txt->SetSize(TXTPOSX, TXTPOSY, sz.x - ss.x - TXTPOSX, sz.y > eh ? eh - TXTPOSY : sz.y - TXTPOSY);
		m_spn->SetSize(sz.x - ss.x, 0, ss.x, sz.y);
	}

	event.Skip();
}


bool wxTimeSpinCtrl::Destroy()
{
	if (m_txt)
	{
		m_txt->Destroy();
		m_txt = NULL;
	}
	if (m_spn)
	{
		m_spn->Destroy();
		m_spn = NULL;
	}
	return true;
}


void wxTimeSpinCtrl::Init()
{
	m_txt = NULL;
	m_spn = NULL;
	spinValue = 0;
}


wxSize wxTimeSpinCtrl::DoGetBestSize() const
{
#ifdef __WXGTK__
	return wxSize(100, m_spn->GetBestSize().y);
#else
	return wxSize(100, m_txt->GetBestSize().y);
#endif
}


bool wxTimeSpinCtrl::Enable(bool enable)
{
	m_txt->Enable(enable);
	m_spn->Enable(enable);

	return true;
}

void wxTimeSpinCtrl::SetMax(long seconds, bool useDay)
{
	hasDay = useDay;
	if (hasDay)
		m_format = wxT("%D:%H:%M:%S");
	else
		m_format = wxT("%H:%M:%S");
	maxSpinValue = seconds + 1;
	if (maxSpinValue < 2)
		maxSpinValue = 2;
	m_spn->SetRange(0, 32767);
}


bool wxTimeSpinCtrl::SetTime(const wxDateTime &time)
{
	if (time.IsValid())
	{
		wxDateTime tt(time);
		tt.ResetTime();
		return SetValue(time - tt);
	}
	else
	{
		m_txt->SetValue(wxEmptyString);
		return false;
	}
}


bool wxTimeSpinCtrl::SetValue(const wxTimeSpan &span)
{
	m_txt->SetValue(span.Format(m_format));
	spinValue = span.GetSeconds().GetLo();
	return true;
}



wxTimeSpan wxTimeSpinCtrl::GetValue()
{
	return wxTimeSpan(0, 0, spinValue);
}


int wxTimeSpinCtrl::GetTimePart()
{
	wxString strAfter = m_txt->GetRange(m_txt->GetInsertionPoint(), 9999);
	int cnt = 0;
	const wxChar *p = (const wxChar *)strAfter;
	while (*p)
	{
		if (*p++ == ':')
			cnt++;
	}
	return cnt;
}


void wxTimeSpinCtrl::Highlight(int tp)
{
	wxString txt = m_txt->GetValue();
	long from = 0, to;
	int i;

	for (i = 3 - tp - (hasDay ? 0 : 1) ; i > 0 ; i--)
		from += txt.Mid(from).Find(':') + 1;

	to = txt.Mid(from).Find(':') + from;
	if (to < from)
		to = 999;

	m_txt->SetSelection(from, to);
}


void wxTimeSpinCtrl::OnSpinUp(wxSpinEvent &ev)
{
#ifdef __WXMSW__
	m_txt->SetFocus();
#endif
	DoSpin(1);
}

void wxTimeSpinCtrl::OnSpinDown(wxSpinEvent &ev)
{
#ifdef __WXMSW__
	m_txt->SetFocus();
#endif
	DoSpin(-1);
}

void wxTimeSpinCtrl::DoSpin(int diff)
{
	int tp = GetTimePart();
	long oldValue = 0, maxValue = 0, mult = 0;

	switch (tp)
	{
		case 0:
			oldValue = spinValue;
			maxValue = 60;
			mult = 1;
			break;
		case 1:
			oldValue = spinValue / 60;
			maxValue = 60;
			mult = 60;
			break;

		case 2:
			oldValue = spinValue / 60 / 60;
			if (hasDay)
				maxValue = 24;
			else
				maxValue = maxSpinValue / 60 / 60;
			mult = 60 * 60;
			break;
		case 3:
			oldValue = spinValue / 60 / 60 / 24;
			maxValue = maxSpinValue / 60 / 60 / 24;
			mult = 60 * 60 * 24;
			break;
		default:
			// can't happen
			break;
	}
	oldValue %= maxValue;
	int newValue = oldValue + diff;

	if (!canWrap)
	{
		if (newValue < 0)
			diff += maxValue;
		else if (newValue >= maxValue)
			diff -= maxValue;
	}

	long newSpinValue = spinValue + diff * mult;
	if (newSpinValue < 0)
		newSpinValue = maxSpinValue - 1;
	else if (newSpinValue > maxSpinValue)
		newSpinValue = 0;

	if (spinValue != newSpinValue)
	{
		spinValue = newSpinValue;
		wxTimeSpan span(0, 0, spinValue);
		wxString txt = span.Format(m_format);
		m_txt->SetValue(txt);
		Highlight(tp);

		wxSpinEvent ev;
		ev.SetEventObject(this);
		ev.SetId(GetId());

#if wxCHECK_VERSION(2, 9, 0)
		GetParent()->GetEventHandler()->ProcessEvent(ev);
#else
		GetParent()->ProcessEvent(ev);
#endif
	}
}


void wxTimeSpinCtrl::OnText(wxCommandEvent &ev)
{
	long time = GetTextTime();
	if (time >= 0)
	{
		spinValue = time;
		ev.SetEventObject(this);
		ev.SetId(GetId());
#if wxCHECK_VERSION(2, 9, 0)
		GetParent()->GetEventHandler()->ProcessEvent(ev);
#else
		GetParent()->ProcessEvent(ev);
#endif
	}
}


void wxTimeSpinCtrl::OnNavigate(wxNavigationKeyEvent &ev)
{
	if (wxWindow::FindFocus() == m_txt)
	{
		int tp = GetTimePart();
		if (ev.GetDirection())
			tp++;
		else
			tp--;
		if ((tp >= 0 && tp < 3) || (hasDay && tp == 3))
		{
			Highlight(tp);
			return;
		}
	}
	ev.Skip();
}


void wxTimeSpinCtrl::OnEditKey(wxKeyEvent &ev)
{
	if (!ev.HasModifiers())
	{
		switch(ev.GetKeyCode())
		{
			case WXK_LEFT:
			{
				if (!ev.ShiftDown())
				{
					int tp = GetTimePart() + 1;
					if (tp < 3 || (hasDay && tp == 3))
					{
						Highlight(tp);
						return;
					}
				}
				break;
			}
			case WXK_RIGHT:
			{
				if (!ev.ShiftDown())
				{
					int tp = GetTimePart() - 1;
					if (tp >= 0)
					{
						Highlight(tp);
						return;
					}
				}
				break;
			}
			case WXK_UP:
				DoSpin(1);
				return;
				break;
			case WXK_DOWN:
				DoSpin(-1);
				return;
				break;
			default:
				break;
		}
	}
	ev.Skip();
}


long wxTimeSpinCtrl::GetTextTime()
{
	int t1, t2, t3, t4;
	int scanned = wxSscanf(m_txt->GetValue(), wxT("%d:%d:%d:%d"), &t1, &t2, &t3, &t4);

	switch (scanned)
	{
		case 1:
			if (t1 >= 0)
				return t1;
			break;
		case 2:
			if (t1 >= 0 && t2 >= 0 && t2 < 60)
				return t1 * 60 + t2;
			break;
		case 3:
			if (t1 >= 0 && t2 >= 0 && t2 < 60 && t3 >= 0 && t3 < 60)
				return (t1 * 60 + t2) * 60 + t3;
			break;
		case 4:
			if (t1 >= 0 && t2 >= 0 && t2 < 24 && t3 >= 0 && t3 < 60 && t4 >= 0 && t4 < 60)
				return ((t1 * 24 + t2) * 60 + t3) * 60 + t4;
			break;
		default:
			break;
	}
	return -1;
}


void wxTimeSpinCtrl::OnKillFocus(wxFocusEvent &ev)
{
#ifdef __WXGTK__
	ev.Skip();
#endif

	long time = GetTextTime();

	if (time < 0)
	{
		m_txt->SetValue(wxEmptyString);
		spinValue = 0;
		m_spn->SetValue(0);
	}
	else
	{
		int tp = GetTimePart();
		SetValue(wxTimeSpan(0, 0, time));
		Highlight(tp);
	}
}


void wxTimeSpinCtrl::OnSetFocus(wxFocusEvent &ev)
{
	m_txt->SetFocus();
	Highlight(hasDay ? 3 : 2);
}
