1 /*
2 * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #ifndef AWT_DND_DS_H
27 #define AWT_DND_DS_H
28
29 #include <Ole2.h>
30
31 #include <jni.h>
32 #include <jvm.h>
33 #include <jni_util.h>
34
35 #include "awt_Object.h"
36 #include "awt_Component.h"
37 #include "awt_Window.h"
38
39 class AwtCursor;
40
41 /**
42 * Drag Source code
43 */
44
45 class AwtDragSource : virtual public IDropSource, virtual public IDataObject {
46 public:
47
48 AwtDragSource(JNIEnv* env, jobject peer, jobject component,
49 jobject transferable, jobject trigger,
50 jint actions, jlongArray formats, jobject formatMap);
51
52 virtual ~AwtDragSource();
53
54 // IUnknown
55
56 virtual HRESULT __stdcall QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject);
57
58 virtual ULONG __stdcall AddRef(void);
59 virtual ULONG __stdcall Release(void);
60
61 // IDropSource
62
63 virtual HRESULT __stdcall QueryContinueDrag(BOOL fEscapeKeyPressed, DWORD grfKeyState);
64
65 virtual HRESULT __stdcall GiveFeedback(DWORD dwEffect);
66
67 // IDataObject
68
69 virtual HRESULT __stdcall GetData(FORMATETC __RPC_FAR *pFormatEtc, STGMEDIUM __RPC_FAR *pmedium);
70 virtual HRESULT __stdcall GetDataHere(FORMATETC __RPC_FAR *pFormatEtc, STGMEDIUM __RPC_FAR *pmedium);
71
72 virtual HRESULT __stdcall QueryGetData(FORMATETC __RPC_FAR *pFormatEtc);
73
74 virtual HRESULT __stdcall GetCanonicalFormatEtc(FORMATETC __RPC_FAR *pFormatEtcIn, FORMATETC __RPC_FAR *pFormatEtcOut);
75
76 virtual HRESULT __stdcall SetData(FORMATETC __RPC_FAR *pFormatEtc, STGMEDIUM __RPC_FAR *pmedium, BOOL fRelease);
77
78 virtual HRESULT __stdcall EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC *__RPC_FAR *ppenumFormatEtc);
79
80 virtual HRESULT __stdcall DAdvise(FORMATETC __RPC_FAR *pFormatEtc, DWORD advf, IAdviseSink __RPC_FAR *pAdvSink, DWORD __RPC_FAR *pdwConnection);
81 virtual HRESULT __stdcall DUnadvise(DWORD dwConnection);
82 virtual HRESULT __stdcall EnumDAdvise(IEnumSTATDATA __RPC_FAR *__RPC_FAR *ppenumAdvise);
83
84
85 // AwtDragSource
86
87 static void StartDrag(
88 AwtDragSource* self,
89 jobject cursor,
90 jintArray imageData,
91 jint imageWidth,
92 jint imageHeight,
93 jint x,
94 jint y);
95
96 HRESULT ChangeCursor();
97 void SetCursor(jobject cursor);
98
99 INLINE unsigned int getNTypes() { return m_ntypes; }
100
101 INLINE FORMATETC getType(unsigned int i) { return m_types[i]; }
102
103 INLINE jobject GetPeer() { return m_peer; }
104
105 INLINE void Signal() { ::ReleaseMutex(m_mutex); }
106
107 virtual HRESULT __stdcall GetProcessId(FORMATETC __RPC_FAR *pFormatEtc, STGMEDIUM __RPC_FAR *pmedium);
108
109 protected:
110 INLINE void WaitUntilSignalled(BOOL retain) {
111 do {
112 // nothing ...
113 } while(::WaitForSingleObject(m_mutex, INFINITE) == WAIT_FAILED);
114
115 if (!retain) ::ReleaseMutex(m_mutex);
116 }
117
118 static void _DoDragDrop(void* param);
119
120 HRESULT __stdcall MatchFormatEtc(FORMATETC __RPC_FAR *pFormatEtcIn, FORMATETC *cacheEnt);
121
122 private:
123
124 void LoadCache(jlongArray formats);
125 void UnloadCache();
126
127 static int __cdecl _compar(const void *, const void *);
128
129 static void call_dSCenter(JNIEnv* env, jobject self, jint targetActions,
130 jint modifiers, jint x, jint y);
131 static void call_dSCmotion(JNIEnv* env, jobject self,
132 jint targetActions, jint modifiers,
133 jint x, jint y);
134 static void call_dSCchanged(JNIEnv* env, jobject self,
135 jint targetActions, jint modifiers,
136 jint x, jint y);
137 static void call_dSCmouseMoved(JNIEnv* env, jobject self,
138 jint targetActions, jint modifiers,
139 jint x, jint y);
140 static void call_dSCexit(JNIEnv* env, jobject self, jint x, jint y);
141 static void call_dSCddfinished(JNIEnv* env, jobject self,
142 jboolean success, jint operations,
143 jint x, jint y);
144 protected:
145
146 class ADSIEnumFormatEtc : public virtual IEnumFORMATETC {
147 public:
148 ADSIEnumFormatEtc(AwtDragSource* parent);
149
150 virtual ~ADSIEnumFormatEtc();
151
152 // IUnknown
153
154 virtual HRESULT __stdcall QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject);
155
156 virtual ULONG __stdcall AddRef(void);
157 virtual ULONG __stdcall Release(void);
158
159 // IEnumFORMATETC
160
161 virtual HRESULT _stdcall Next(ULONG celt, FORMATETC __RPC_FAR *rgelt, ULONG __RPC_FAR *pceltFetched);
162 virtual HRESULT _stdcall Skip(ULONG celt);
163 virtual HRESULT _stdcall Reset();
164 virtual HRESULT _stdcall Clone(IEnumFORMATETC __RPC_FAR *__RPC_FAR *ppenum);
165
166 private:
167 AwtDragSource* m_parent;
168 ULONG m_refs;
169
170 unsigned int m_idx;
171 };
172
173 class ADSIStreamProxy : public virtual IStream {
174 private:
175 ADSIStreamProxy(ADSIStreamProxy* cloneof);
176
177 public:
178 ADSIStreamProxy(AwtDragSource* parent, jbyteArray buffer, jint len);
179
180 virtual ~ADSIStreamProxy();
181
182 // IUnknown
183
184 virtual HRESULT __stdcall QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject);
185
186 virtual ULONG __stdcall AddRef(void);
187 virtual ULONG __stdcall Release(void);
188
189 // IStream
190
191
192 virtual HRESULT __stdcall Read(void __RPC_FAR *pv, ULONG cb, ULONG __RPC_FAR *pcbRead);
193
194 virtual HRESULT __stdcall Write(const void __RPC_FAR *pv, ULONG cb, ULONG __RPC_FAR *pcbWritten);
195
196 virtual HRESULT __stdcall Seek(LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER __RPC_FAR *plibNewPosition);
197
198 virtual HRESULT __stdcall SetSize(ULARGE_INTEGER libNewSize);
199
200 virtual HRESULT __stdcall CopyTo(IStream __RPC_FAR *pstm, ULARGE_INTEGER cb, ULARGE_INTEGER __RPC_FAR *pcbRead, ULARGE_INTEGER __RPC_FAR *pcbWritten);
201
202 virtual HRESULT __stdcall Commit(DWORD grfCommitFlags);
203
204 virtual HRESULT __stdcall Revert();
205
206 virtual HRESULT __stdcall LockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
207
208 virtual HRESULT __stdcall UnlockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
209
210 virtual HRESULT __stdcall Stat(STATSTG __RPC_FAR *pstatstg, DWORD grfStatFlag);
211
212 virtual HRESULT __stdcall Clone(IStream __RPC_FAR *__RPC_FAR *ppstm);
213 protected:
214 AwtDragSource* m_parent;
215
216 signed char* m_buffer;
217 unsigned int m_off;
218 unsigned int m_blen;
219
220 STATSTG m_statstg;
221
222 ADSIStreamProxy* m_cloneof;
223
224 ULONG m_refs;
225 };
226
227 public:
228 static const UINT PROCESS_ID_FORMAT;
229
230 private:
231
232 // instance vars ...
233
234 jobject m_peer;
235
236 jint m_initmods;
237 jint m_lastmods;
238
239 HWND m_droptarget;
240 int m_enterpending;
241
242 jint m_actions;
243
244 FORMATETC* m_types;
245 unsigned int m_ntypes;
246
247 ULONG m_refs;
248
249 AwtCursor* m_cursor;
250
251 HANDLE m_mutex;
252
253 jobject m_component;
254 jobject m_transferable;
255 jobject m_formatMap;
256
257 POINT m_dragPoint;
258 POINT m_dropPoint;
259 BOOL m_fNC;
260 BOOL m_bRestoreNodropCustomCursor;//CR 6480706 - MS Bug on hold
261
262 DWORD m_dwPerformedDropEffect;
263
264 // static's ...
265
266 static jclass dSCClazz;
267 static jclass awtIEClazz;
268
269 static jmethodID dSCdragenter;
270 static jmethodID dSCdragmotion;
271 static jmethodID dSCopschanged;
272 static jmethodID dSCdragexit;
273 static jmethodID dSCddfinish;
274
275 static jfieldID awtIEmods;
276 };
277
278 extern const CLIPFORMAT CF_PERFORMEDDROPEFFECT;
279 extern const CLIPFORMAT CF_FILEGROUPDESCRIPTORA;
280 extern const CLIPFORMAT CF_FILEGROUPDESCRIPTORW;
281 extern const CLIPFORMAT CF_FILECONTENTS;
282
283 #endif /* AWT_DND_DS_H */