BansheeEngine/CamelotClient/Include/BsDockManager.h

#pragma once

#include "BsEditorPrerequisites.h"

namespace BansheeEditor
{
	enum class DockLocation
	{
		Left, Right, Top, Bottom, Center
	};

	class DockManager
	{
		class DockContainer
		{
		public:
			DockContainer();
			~DockContainer();

			void setArea(CM::INT32 x, CM::INT32 y, CM::UINT32 width, CM::UINT32 height);
			void makeLeaf(BS::GUIWidget* widgetParent, EditorWidget* widget);
			void addLeft(BS::GUIWidget* widgetParent, EditorWidget* widget);
			void addRight(BS::GUIWidget* widgetParent, EditorWidget* widget);
			void addTop(BS::GUIWidget* widgetParent, EditorWidget* widget);
			void addBottom(BS::GUIWidget* widgetParent, EditorWidget* widget);

			DockContainer* find(EditorWidgetContainer* widgetContainer);

			bool mIsLeaf;
			DockContainer* mChildren[2];
			EditorWidgetContainer* mWidgets;
			CM::INT32 mX, mY;
			CM::UINT32 mWidth, mHeight;
			float mSplitPosition;
			bool mIsHorizontal;

			static const CM::UINT32 SliderSize;

		private:
			void splitContainer(BS::GUIWidget* widgetParent, EditorWidget* widget, bool horizontal, bool newChildIsFirst);
		};
	public:
		DockManager(BS::GUIWidget* parent);
		~DockManager();

		void insert(EditorWidgetContainer* relativeTo, EditorWidget* widgetToInsert, DockLocation location);

		void setArea(CM::INT32 x, CM::INT32 y, CM::UINT32 width, CM::UINT32 height);

	private:
		BS::GUIWidget* mParent;
		DockContainer mRootContainer;
	};
}