/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program 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 this program. If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//																			//
//	pfGUIDialogMod Header													//
//																			//
//////////////////////////////////////////////////////////////////////////////

#ifndef _pfGUIDialogMod_h
#define _pfGUIDialogMod_h


#include "../pnModifier/plSingleModifier.h"
#include "pfGameGUIMgr.h"
#include "hsMatrix44.h"

class plMessage;
class plPostEffectMod;
class pfGUIControlMod;
class pfGUIDialogProc;
class pfGUIListElement;
class pfGUIColorScheme;

class pfGUIDialogMod : public plSingleModifier
{
	private:
		pfGUIDialogMod	*fNext, **fPrevPtr;

	protected:

		UInt32		fTagID;		// 0 if none

		UInt32		fVersion;	// Nice for syncing to C++ code

		plPostEffectMod				*fRenderMod;
		hsBool						fEnabled;
		char						fName[ 128 ];
		hsTArray<pfGUIControlMod *>	fControls;
		pfGUIControlMod				*fControlOfInterest;
		pfGUIControlMod				*fFocusCtrl;
		pfGUIControlMod				*fMousedCtrl;	// Which one is the mouse over?
		pfGUIColorScheme			*fColorScheme;

		pfGUIDialogProc				*fHandler;
		plKey						fProcReceiver;		// Non-nil means we handle everything by creating notify messages and sending them to this key

		hsTArray<pfGUIListElement *>	fDragElements;
		hsBool							fDragMode, fDragReceptive;
		pfGUIControlMod					*fDragTarget;
		pfGUIControlMod					*fDragSource;

		plKey			fSceneNodeKey;


		virtual hsBool IEval( double secs, hsScalar del, UInt32 dirty ); // called only by owner object's Eval()

		void	IHandleDrag( hsPoint3 &mousePt, pfGameGUIMgr::EventType event, UInt8 modifiers );

	public:

		enum
		{
			kRenderModRef = 0,
			kControlRef,
			kRefDerviedStart
		};

		enum Flags
		{
			kModal,
			kDerivedFlagsStart
		};

		pfGUIDialogMod();
		virtual ~pfGUIDialogMod();

		CLASSNAME_REGISTER( pfGUIDialogMod );
		GETINTERFACE_ANY( pfGUIDialogMod, plSingleModifier );


		virtual hsBool	MsgReceive( plMessage* pMsg );
		
		virtual void Read( hsStream* s, hsResMgr* mgr );
		virtual void Write( hsStream* s, hsResMgr* mgr );

		void		SetSceneNodeKey( plKey &key ) { fSceneNodeKey = key; }
		plKey		GetSceneNodeKey( void );

		virtual void	SetEnabled( hsBool e );
		hsBool			IsEnabled( void ) { return fEnabled; }

		const char	*GetName( void ) { return fName; }

		void		ScreenToWorldPoint( hsScalar x, hsScalar y, hsScalar z, hsPoint3 &outPt );
		hsPoint3	WorldToScreenPoint( const hsPoint3 &inPt );

		virtual hsBool	HandleMouseEvent( pfGameGUIMgr::EventType event, hsScalar mouseX, hsScalar mouseY, UInt8 modifiers );
		hsBool			HandleKeyEvent( pfGameGUIMgr::EventType event, plKeyDef key, UInt8 modifiers );
		hsBool			HandleKeyPress( char key, UInt8 modifiers );
		void			UpdateInterestingThings( hsScalar mouseX, hsScalar mouseY, UInt8 modifiers, hsBool modalPreset );

		void			SetControlOfInterest( pfGUIControlMod *c );
		pfGUIControlMod	*GetControlOfInterest( void ) const { return fControlOfInterest; }
		UInt32			GetDesiredCursor( void ) const;

		void		UpdateAspectRatio( void );
		void		UpdateAllBounds( void );
		void		RefreshAllControls( void );

		void			AddControl( pfGUIControlMod *ctrl );
		UInt32			GetNumControls( void ) { return fControls.GetCount(); }
		pfGUIControlMod	*GetControl( UInt32 idx ) { return fControls[ idx ]; }

		pfGUIColorScheme	*GetColorScheme( void ) const { return fColorScheme; }

		void	LinkToList( pfGUIDialogMod **prevPtr )
		{
			fNext = *prevPtr;
			if( *prevPtr )
				(*prevPtr)->fPrevPtr = &fNext;
			fPrevPtr = prevPtr;
			*prevPtr = this;
		}

		void	Unlink( void )
		{
			if( fNext )
				fNext->fPrevPtr = fPrevPtr;
			*fPrevPtr = fNext;

			fPrevPtr = nil;
			fNext = nil;
		}

		void			SetFocus( pfGUIControlMod *ctrl );
		void			Show( void );
		void			ShowNoReset( void );
		void			Hide( void );
		hsBool			IsVisible( void ) { return IsEnabled(); }

		pfGUIControlMod	*GetFocus( void ) { return fFocusCtrl; }

		pfGUIDialogMod	*GetNext( void ) { return fNext; }
		UInt32			GetTagID( void ) { return fTagID; }
		pfGUIControlMod	*GetControlFromTag( UInt32 tagID );

		void			SetHandler( pfGUIDialogProc *hdlr );
		pfGUIDialogProc	*GetHandler( void ) const { return fHandler; }

		plPostEffectMod *GetRenderMod( void ) const { return fRenderMod; }

		// This sets the handler for the dialog and ALL of its controls
		void			SetHandlerForAll( pfGUIDialogProc *hdlr );

		// Just a little macro-type thing here
		void			SetControlHandler( UInt32 tagID, pfGUIDialogProc *hdlr );

		/// Methods for doing drag & drop of listElements

		void	ClearDragList( void );
		void	AddToDragList( pfGUIListElement *e );
		void	EnterDragMode( pfGUIControlMod *source );

		UInt32	GetVersion( void ) const { return fVersion; }

		// Export only
		void		SetRenderMod( plPostEffectMod *mod ) { fRenderMod = mod; }
		void		SetName( const char *name ) { hsStrncpy( fName, name, sizeof( fName ) - 1 ); }
		void		AddControlOnExport( pfGUIControlMod *ctrl );
		void		SetTagID( UInt32 id ) { fTagID = id; }
		void		SetProcReceiver( plKey key ) { fProcReceiver = key; }
		void		SetVersion( UInt32 version ) { fVersion = version; }
};

#endif // _pfGUIDialogMod_h