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/*************************************************************************
*
* $RCSfile: target.hxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: jl $ $Date: 2001-02-08 14:30:48 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef _TARGET_HXX_
#define _TARGET_HXX_
#ifndef _COM_SUN_STAR_LANG_XINITIALIZATION_HPP_
#include <com/sun/star/lang/XInitialization.hpp>
#endif
#ifndef _COM_SUN_STAR_DATATRANSFER_DND_XDROPTARGET_HPP_
#include <com/sun/star/datatransfer/dnd/XDropTarget.hpp>
#endif
#ifndef _CPPUHELPER_COMPBASE2_HXX_
#include <cppuhelper/compbase2.hxx>
#endif
#ifndef _CPPUHELPER_INTERFACECONTAINER_HXX_
#include <cppuhelper/interfacecontainer.hxx>
#endif
#ifndef _OSL_MUTEX_H_
#include <osl/mutex.hxx>
#endif
#include <oleidl.h>
#include "globals.hxx"
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::uno;
using namespace cppu;
using namespace osl;
using namespace ::com::sun::star::datatransfer;
using namespace ::com::sun::star::datatransfer::dnd;
// DropTarget is a singleton, that is one cannot count on its destructor
// do do the cleanup because the factory will hold a reference. The client
// has to call XComponent::dispose before the HWND becomes invalid.
class DropTarget: public MutexDummy,
public WeakComponentImplHelper2< XInitialization, XDropTarget>,
public IDropTarget
{
private:
// The native window for which acts as drop target.
HWND m_hWnd; // set by initialize
Reference<XMultiServiceFactory> m_serviceFactory;
sal_Bool m_bDropTargetRegistered;
sal_Int8 m_nDefaultActions;
// This value is set when a XDropTargetListener calls accept or reject on
// the XDropTargetDropContext or XDropTargetDragContext.
// The values are from the DNDConstants group.
sal_Int8 m_nListenerDropAction;
Reference<XTransferable> m_currentData;
// The current action is used to determine if the USER
// action has changed (dropActionChanged)
sal_Int8 m_userAction;
// Set by listeners when they call XDropTargetDropContext::dropComplete
sal_Bool m_bDropComplete;
// Used to find out wheter the listeners callbacks through the Context interfaces
// contained in the event objects are valid.
sal_uInt32 m_currentEventId;
private:
DropTarget();
DropTarget(DropTarget&);
DropTarget &operator= (DropTarget&);
public:
DropTarget(const Reference<XMultiServiceFactory>& sf);
virtual ~DropTarget();
#ifdef DEBUG
virtual void SAL_CALL release();
#endif
// XInitialization
virtual void SAL_CALL initialize( const Sequence< Any >& aArguments )
throw(Exception, RuntimeException);
// XDropTarget
virtual void SAL_CALL addDropTargetListener( const Reference< XDropTargetListener >& dtl )
throw(RuntimeException);
virtual void SAL_CALL removeDropTargetListener( const Reference< XDropTargetListener >& dtl )
throw(RuntimeException);
// Default is not active
virtual sal_Bool SAL_CALL isActive( ) throw(RuntimeException);
virtual void SAL_CALL setActive( sal_Bool isActive ) throw(RuntimeException);
virtual sal_Int8 SAL_CALL getDefaultActions( ) throw(RuntimeException);
virtual void SAL_CALL setDefaultActions( sal_Int8 actions ) throw(RuntimeException);
// IDropTarget
virtual HRESULT STDMETHODCALLTYPE QueryInterface(
/* [in] */ REFIID riid,
/* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject);
virtual ULONG STDMETHODCALLTYPE AddRef( );
virtual ULONG STDMETHODCALLTYPE Release( );
virtual HRESULT STDMETHODCALLTYPE DragEnter(
/* [unique][in] */ IDataObject __RPC_FAR *pDataObj,
/* [in] */ DWORD grfKeyState,
/* [in] */ POINTL pt,
/* [out][in] */ DWORD __RPC_FAR *pdwEffect);
virtual HRESULT STDMETHODCALLTYPE DragOver(
/* [in] */ DWORD grfKeyState,
/* [in] */ POINTL pt,
/* [out][in] */ DWORD __RPC_FAR *pdwEffect);
virtual HRESULT STDMETHODCALLTYPE DragLeave( ) ;
virtual HRESULT STDMETHODCALLTYPE Drop(
/* [unique][in] */ IDataObject __RPC_FAR *pDataObj,
/* [in] */ DWORD grfKeyState,
/* [in] */ POINTL pt,
/* [out][in] */ DWORD __RPC_FAR *pdwEffect);
// Non - interface functions --------------------------------------------------
// XDropTargetDropContext delegated from DropContext
// return false signifies the caller to throw a InvalidDNDOperationException
void _acceptDrop( sal_Int8 dropOperation, sal_uInt32 id)
throw (InvalidDNDOperationException);
// return false signifies the caller to throw a InvalidDNDOperationException
void _rejectDrop( sal_uInt32 id)
throw (InvalidDNDOperationException);
// return false signifies the caller to throw a InvalidDNDOperationException
void _dropComplete( sal_Bool success, sal_uInt32)
throw (InvalidDNDOperationException);
// XDropTargetDragContext delegated from DragContext
// return false signifies the caller to throw a InvalidDNDOperationException
void _acceptDrag( sal_Int8 dragOperation, sal_uInt32)
throw (InvalidDNDOperationException);
// return false signifies the caller to throw a InvalidDNDOperationException
void _rejectDrag( sal_uInt32)throw (InvalidDNDOperationException);
Sequence<DataFlavor> _getCurrentDataFlavors( sal_uInt32 id)
throw (InvalidDNDOperationException);
sal_Bool _isDataFlavorSupported( const DataFlavor& df, sal_uInt32 id)
throw (InvalidDNDOperationException);
protected:
// Gets the current action dependend on the pressed modifiers, the effects
// supported by the drop source (IDropSource) and the default actions of the
// drop target (XDropTarget, this class))
inline sal_Int8 getFilteredActions( DWORD grfKeyState, DWORD sourceActions);
// Only filters with the default actions
inline sal_Int8 getFilteredActions( DWORD grfKeyState);
void fire_drop( const DropTargetDropEvent& dte);
void fire_dragEnter( const DropTargetDragEvent& dtde );
void fire_dragExit( const DropTargetEvent& dte );
void fire_dragOver( const DropTargetDragEvent& dtde );
void fire_dropActionChanged( const DropTargetDragEvent& dtde );
};
#endif
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