/*  PCSX2 - PS2 Emulator for PCs
 *  Copyright (C) 2002-2010  PCSX2 Dev Team
 *
 *  PCSX2 is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU Lesser General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 *  PURPOSE.  See the GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along with PCSX2.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#include "common/pxRadioPanel.h"
#include "common/pxStaticText.h"
#include "common/SafeArray.inl"

template class SafeArray<RadioPanelObjects>;

// ===========================================================================================
//  pxRadioPanel Implementations
// ===========================================================================================

#define VerifyRealizedState() \
	pxAssertDev(m_IsRealized, "Invalid object state: RadioButtonGroup as not been realized.")

void pxRadioPanel::Init(const RadioPanelItem* srcArray, int arrsize)
{
	m_DefaultIdx = -1;
	m_IsRealized = false;

	// FIXME: This probably needs to be platform-dependent, and/or based on font size.
	m_Indentation = 23;

	for (int i = 0; i < arrsize; ++i)
		Append(srcArray[i]);
}

pxRadioPanel& pxRadioPanel::Append(const RadioPanelItem& entry)
{
	m_buttonStrings.push_back(entry);
	return *this;
}

void pxRadioPanel::Reset()
{
	m_IsRealized = false;
	const int numbuttons = m_buttonStrings.size();
	if (numbuttons == 0)
		return;

	for (int i = 0; i < numbuttons; ++i)
	{
		safe_delete(m_objects[i].LabelObj);
		safe_delete(m_objects[i].SubTextObj);
	}
	m_buttonStrings.clear();
}

void pxRadioPanel::Realize()
{
	const int numbuttons = m_buttonStrings.size();
	if (numbuttons == 0)
		return;
	if (m_IsRealized)
		return;
	m_IsRealized = true;

	m_objects.MakeRoomFor(numbuttons);

	// Add all RadioButtons in one pass, and then go back and create all the subtext
	// objects.  This ensures the radio buttons have consecutive tab order IDs, which
	// is the "preferred" method when using grouping features of the native window
	// managers (GTK tends to not care either way, but Win32 definitely prefers a
	// linear tab order).

	// first object has the group flag set to ensure it's the start of a radio group.
	m_objects[0].LabelObj = new wxRadioButton(this, wxID_ANY, m_buttonStrings[0].Label, wxDefaultPosition, wxDefaultSize, wxRB_GROUP);
	for (int i = 1; i < numbuttons; ++i)
		m_objects[i].LabelObj = new wxRadioButton(this, wxID_ANY, m_buttonStrings[i].Label);

	for (int i = 0; i < numbuttons; ++i)
	{
		m_objects[i].SubTextObj = NULL;
		if (m_buttonStrings[i].SubText.IsEmpty())
			continue;
		m_objects[i].SubTextObj = new pxStaticText(this, m_buttonStrings[i].SubText, wxALIGN_LEFT);
	}

	pxAssert(GetSizer() != NULL);

	for (int i = 0; i < numbuttons; ++i)
	{
		*this += m_objects[i].LabelObj | pxSizerFlags::StdExpand();

		if (pxStaticText* subobj = m_objects[i].SubTextObj)
		{
			*this += subobj | pxBorder(wxLEFT, m_Indentation).Expand();
			*this += 9 + m_padding.GetHeight();
		}
		if (!m_buttonStrings[i].ToolTip.IsEmpty())
			_setToolTipImmediate(i, m_buttonStrings[i].ToolTip);
	}

	_RealizeDefaultOption();
}

void pxRadioPanel::_setToolTipImmediate(int idx, const wxString& tip)
{
	if (wxRadioButton* woot = m_objects[idx].LabelObj)
		woot->SetToolTip(tip);

	if (pxStaticText* woot = m_objects[idx].SubTextObj)
		woot->SetToolTip(tip);
}

// The SetToolTip API provided by this function applies the tooltip to both the radio
// button and it's static subtext (if present), and performs word wrapping on platforms
// that need it (eg mswindows).
pxRadioPanel& pxRadioPanel::SetToolTip(int idx, const wxString& tip)
{
	m_buttonStrings[idx].SetToolTip(tip);

	if (m_IsRealized)
		_setToolTipImmediate(idx, tip);

	return *this;
}

pxRadioPanel& pxRadioPanel::SetSelection(int idx)
{
	if (!VerifyRealizedState())
		return *this;

	pxAssert(m_objects[idx].LabelObj != NULL);
	m_objects[idx].LabelObj->SetValue(true);
	return *this;
}

void pxRadioPanel::_RealizeDefaultOption()
{
	if (m_IsRealized && m_DefaultIdx != -1)
	{
		wxFont def(GetFont());
		def.SetWeight(wxFONTWEIGHT_BOLD);
		//def.SetStyle( wxFONTSTYLE_ITALIC );
		m_objects[m_DefaultIdx].LabelObj->SetFont(def);
		m_objects[m_DefaultIdx].LabelObj->SetForegroundColour(wxColour(20, 128, 40));
	}
}

// Highlights (bold) the text of the default radio.
// Not intended for restoring default value at later time.
pxRadioPanel& pxRadioPanel::SetDefaultItem(int idx)
{
	if (idx == m_DefaultIdx)
		return *this;

	if (m_IsRealized && m_DefaultIdx != -1)
	{
		wxFont def(GetFont());
		m_objects[m_DefaultIdx].LabelObj->SetFont(def);
		m_objects[m_DefaultIdx].LabelObj->SetForegroundColour(GetForegroundColour());
	}

	m_DefaultIdx = idx;
	_RealizeDefaultOption();

	return *this;
}

pxRadioPanel& pxRadioPanel::EnableItem(int idx, bool enable)
{
	pxAssertDev(m_IsRealized, "RadioPanel must be realized first, prior to enabling or disabling individual items.");

	if (m_objects[idx].LabelObj)
		m_objects[idx].LabelObj->Enable(enable);

	if (m_objects[idx].SubTextObj)
		m_objects[idx].SubTextObj->Enable(enable);

	return *this;
}

const RadioPanelItem& pxRadioPanel::Item(int idx) const
{
	return m_buttonStrings[idx];
}

RadioPanelItem& pxRadioPanel::Item(int idx)
{
	return m_buttonStrings[idx];
}

int pxRadioPanel::GetSelection() const
{
	if (!VerifyRealizedState())
		return 0;

	for (uint i = 0; i < m_buttonStrings.size(); ++i)
	{
		if (wxRadioButton* woot = m_objects[i].LabelObj)
			if (woot->GetValue())
				return i;
	}

	// Technically radio buttons should never allow for a case where none are selected.
	// However it *can* happen on some platforms if the program code doesn't explicitly
	// select one of the members of the group (which is, as far as I'm concerned, a
	// programmer error!). so Assert here in such cases, and return 0 as the assumed
	// default, so that calling code has a "valid" return code in release builds.

	pxFailDev("No valid selection was found in this group!");
	return 0;
}

// Returns the wxWindowID for the currently selected radio button.
wxWindowID pxRadioPanel::GetSelectionId() const
{
	if (!VerifyRealizedState())
		return 0;
	return m_objects[GetSelection()].LabelObj->GetId();
}


bool pxRadioPanel::IsSelected(int idx) const
{
	if (!VerifyRealizedState())
		return false;
	pxAssert(m_objects[idx].LabelObj != NULL);
	return m_objects[idx].LabelObj->GetValue();
}

pxStaticText* pxRadioPanel::GetSubText(int idx)
{
	if (!VerifyRealizedState())
		return NULL;
	return m_objects[idx].SubTextObj;
}

const pxStaticText* pxRadioPanel::GetSubText(int idx) const
{
	if (!VerifyRealizedState())
		return NULL;
	return m_objects[idx].SubTextObj;
}

wxRadioButton* pxRadioPanel::GetButton(int idx)
{
	if (!VerifyRealizedState())
		return NULL;
	return m_objects[idx].LabelObj;
}

const wxRadioButton* pxRadioPanel::GetButton(int idx) const
{
	if (!VerifyRealizedState())
		return NULL;
	return m_objects[idx].LabelObj;
}