#include "stdafx.h"
#include <algorithm>
#include "CommandUserBase.h"


CommandUserBase::CommandUserBase()
{
}


CommandUserBase::~CommandUserBase()
{
	this->UnassignFromSceneNodes();
	while (!m_Commands.empty())
	{
		delete m_Commands[0];
		m_Commands.erase(m_Commands.begin());
	}
}


const std::vector<Command*>& CommandUserBase::GetCommands() const
{
	return m_Commands;
}


void CommandUserBase::AssignToRenderCommandNode(IRenderCommandNode& argNode)
{
	m_RenderCommandNodesIamAssignedTo.push_back(&argNode);
	argNode.MarkDirty();
}


void CommandUserBase::UnassignFromRenderCommandNode(IRenderCommandNode& argNode)
{
	std::vector<IRenderCommandNode*>::iterator found = std::find(m_RenderCommandNodesIamAssignedTo.begin(), m_RenderCommandNodesIamAssignedTo.end(), &argNode);
	if (found != m_RenderCommandNodesIamAssignedTo.end())
	{
		m_RenderCommandNodesIamAssignedTo.erase(found);
		argNode.MarkDirty();
	}
}


void CommandUserBase::UnassignFromSceneNodes()
{
	while (!m_RenderCommandNodesIamAssignedTo.empty())
		m_RenderCommandNodesIamAssignedTo.back()->RemoveCommandUser(*const_cast<CommandUserBase*>(this));
}


void CommandUserBase::MarkCommandsAsDirty()
{
	for (uint32 i = 0; i < m_RenderCommandNodesIamAssignedTo.size(); ++i)
		m_RenderCommandNodesIamAssignedTo[i]->MarkDirty();
}