/*
 * GuiElement
 */

#include "GuiElement.h"

/*
 * GuiElement
 */
GuiElement::GuiElement() : pContainer(NULL), kPosition(0.0f, 0.0f), kDimensions(0.0f, 0.0f)
{
}

/*
 * ~GuiElement
 */
GuiElement::~GuiElement()
{
}

/*
 * Initialize
 */
ErrorCode GuiElement::Initialize(ResourceManager* pResourceManager)
{
	return Error_Success;
}

/*
 * Terminate
 */
void GuiElement::Terminate()
{
}

/*
 * Update
 */
void GuiElement::Update(float fElapsed)
{
	for(uint32 i = 0; i < kChildren.Size(); ++i)
	{
		kChildren[i]->Update(fElapsed);
	}
}

/*
 * Render
 */
void GuiElement::Render(RenderContext& kContext, Camera& kCamera)
{
	for(uint32 i = 0; i < kChildren.Size(); ++i)
	{
		kChildren[i]->Render(kContext, kCamera);
	}
}

/*
 * Attach
 */
void GuiElement::Attach(GuiElement* pInstance)
{
	pContainer = pInstance;
}

/* 
 * Detach
 */
GuiElement* GuiElement::Detach()
{
	GuiElement* pInstance = pContainer;
	pContainer = NULL;
	return pInstance;
}

/*
 * GetContainer
 */
GuiElement* GuiElement::GetContainer()
{
	return pContainer;
}

/*
 * SetPosition
 */
void GuiElement::SetPosition(float fX, float fY)
{
	kPosition.x = fX;
	kPosition.y = fY;
}

/*
 * SetPosition
 */
void GuiElement::SetPosition(const D3DXVECTOR2& kValue)
{
	kPosition = kValue;
}

/*
 * GetPosition
 */
const D3DXVECTOR2 GuiElement::GetPosition() const
{
	return pContainer ? pContainer->GetPosition() + kPosition : kPosition;
}

/*
 * SetDimensions
 */
void GuiElement::SetDimensions(float fWidth, float fHeight)
{
	kDimensions.x = fWidth;
	kDimensions.y = fHeight;
}

/*
 * SetDimensions
 */
void GuiElement::SetDimensions(const D3DXVECTOR2& kValue)
{
	kDimensions = kValue;
}

/*
 * GetDimensions
 */
const D3DXVECTOR2 GuiElement::GetDimensions() const
{
	return kDimensions;
}

/*
 * Pick
 */
GuiElement* GuiElement::Pick(float fX, float fY)
{
	GuiElement* pElement = NULL;

	for(uint32 i = 0; i < kChildren.Size() && !pElement; ++i)
	{
		const D3DXVECTOR2& kLocation	= kChildren[i]->GetPosition();
		const D3DXVECTOR2& kSize		= kChildren[i]->GetDimensions();

		if(Rectangle2(kLocation.x, kLocation.y, kSize.x, kSize.y).Contains(fX, fY))
		{
			pElement = kChildren[i];
		}
	}

	if(!pElement)
	{
		const D3DXVECTOR2& kLocation	= GetPosition();
		const D3DXVECTOR2& kSize		= GetDimensions();

		if(Rectangle2(kLocation.x, kLocation.y, kSize.x, kSize.y).Contains(fX, fY))
		{
			pElement = this;
		}
	}

	return pElement;
}

/*
 * Add
 */
ErrorCode GuiElement::Add(GuiElement* pElement)
{
	ErrorCode eCode = Error_Fail;
	
	if(pElement)
	{
		eCode = kChildren.Add(pElement);
		if(eCode == Error_Success)
		{
			pElement->Attach(this);	
		}
	}

	return eCode;
}

/*
 * Remove
 */
ErrorCode GuiElement::Remove(GuiElement* pElement)
{
	ErrorCode eCode = Error_Fail;

	if(pElement)
	{
		eCode = kChildren.Remove(pElement);
		if(eCode == Error_Success)
		{
			pElement->Detach();
		}
	}

	return eCode;
}

/*
 * AllowDrag
 */
bool GuiElement::AllowDrag() const
{
	return false;
}

/*
 * AllowDrop
 */
bool GuiElement::AllowDrop() const
{
	return false;
}

/*
 * OnMouseDown
 */
void GuiElement::OnMouseDown(uint32 nButton, float fX, float fY)
{
}

/*
 * OnMouseUp
 */
void GuiElement::OnMouseUp(uint32 nButton, float fX, float fY)
{
}

/*
 * OnMouseMove
 */
void GuiElement::OnMouseMove(float fX, float fY)
{
}

/*
 * OnDrag
 */
void GuiElement::OnDrag(float fX, float fY)
{
}

/*
 * OnDrop
 */
void GuiElement::OnDrop(GuiElement* pSource, float fX, float fY)
{
}