summaryrefslogtreecommitdiff
path: root/dtrans/source/win32/dnd/target.hxx
blob: e5a044b197a9f74319dbd5d677cdd10210d4f9b1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
/*************************************************************************
 *
 *  $RCSfile: target.hxx,v $
 *
 *  $Revision: 1.3 $
 *
 *  last change: $Author: jl $ $Date: 2001-02-12 11:11:59 $
 *
 *  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 _COM_SUN_STAR_DATATRANSFER_DND_DROPTARGETDRAGENTEREVENT_HPP_
#include <com/sun/star/datatransfer/dnd/DropTargetDragEnterEvent.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);
    // return false signifies the caller to throw a InvalidDNDOperationException
    void _rejectDrop( sal_uInt32 id);
    // return false signifies the caller to throw a InvalidDNDOperationException
    void _dropComplete( sal_Bool success, sal_uInt32);

// XDropTargetDragContext delegated from DragContext
    // return false signifies the caller to throw a InvalidDNDOperationException
    void _acceptDrag( sal_Int8 dragOperation, sal_uInt32);
    // return false signifies the caller to throw a InvalidDNDOperationException
    void _rejectDrag( sal_uInt32);
    Sequence<DataFlavor> _getCurrentDataFlavors( sal_uInt32 id);
    sal_Bool _isDataFlavorSupported( const DataFlavor& df, sal_uInt32 id);


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 DropTargetDragEnterEvent& dtde );
    void fire_dragExit( const DropTargetEvent& dte );
    void fire_dragOver( const DropTargetDragEvent& dtde );
    void fire_dropActionChanged( const DropTargetDragEvent& dtde );




};


#endif