1 /*
2 * Copyright (c) 2011, 2014, 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 #import "CClipboard.h"
27 #import "CDataTransferer.h"
28 #import "ThreadUtilities.h"
29 #import "jni_util.h"
30 #import <Cocoa/Cocoa.h>
31 #import <JavaNativeFoundation/JavaNativeFoundation.h>
32
33 static CClipboard *sClipboard = nil;
34
35 //
36 // CClipboardUpdate is used for mulitple calls to setData that happen before
37 // the model and AppKit can get back in sync.
38 //
39
40 @interface CClipboardUpdate : NSObject {
41 NSData *fData;
42 NSString *fFormat;
43 }
44
45 - (id)initWithData:(NSData *)inData withFormat:(NSString *)inFormat;
46 - (NSData *)data;
47 - (NSString *)format;
48
49 @end
50
51 @implementation CClipboardUpdate
52
53 - (id)initWithData:(NSData *)inData withFormat:(NSString *)inFormat
54 {
55 self = [super init];
56
57 if (self != nil) {
58 fData = [inData retain];
59 fFormat = [inFormat retain];
60 }
61
62 return self;
63 }
64
65 - (void)dealloc
66 {
67 [fData release];
68 fData = nil;
69
70 [fFormat release];
71 fFormat = nil;
72
73 [super dealloc];
74 }
75
76 - (NSData *)data {
77 return fData;
78 }
79
80 - (NSString *)format {
81 return fFormat;
82 }
83 @end
84
85 @implementation CClipboard
86
87 // Clipboard creation is synchronized at the Java level.
88 + (CClipboard *) sharedClipboard
89 {
90 if (sClipboard == nil) {
91 sClipboard = [[CClipboard alloc] init];
92 [[NSNotificationCenter defaultCenter] addObserver:sClipboard selector: @selector(checkPasteboard:)
93 name: NSApplicationDidBecomeActiveNotification
94 object: nil];
95 }
96
97 return sClipboard;
98 }
99
100 - (id) init
101 {
102 self = [super init];
103
104 if (self != nil) {
105 fChangeCount = [[NSPasteboard generalPasteboard] changeCount];
106 }
107
108 return self;
109 }
110
111 - (void) javaDeclareTypes:(NSArray *)inTypes withOwner:(jobject)inClipboard jniEnv:(JNIEnv *)inEnv {
112
113 @synchronized(self) {
114 if (inClipboard != NULL) {
115 if (fClipboardOwner != NULL) {
116 JNFDeleteGlobalRef(inEnv, fClipboardOwner);
117 }
118 fClipboardOwner = JNFNewGlobalRef(inEnv, inClipboard);
119 }
120 }
121 [ThreadUtilities performOnMainThread:@selector(_nativeDeclareTypes:) on:self withObject:inTypes waitUntilDone:YES];
122 }
123
124 - (void) _nativeDeclareTypes:(NSArray *)inTypes {
125 AWT_ASSERT_APPKIT_THREAD;
126
127 fChangeCount = [[NSPasteboard generalPasteboard] declareTypes:inTypes owner:self];
128 }
129
130
131 - (NSArray *) javaGetTypes {
132
133 NSMutableArray *args = [NSMutableArray arrayWithCapacity:1];
134 [ThreadUtilities performOnMainThread:@selector(_nativeGetTypes:) on:self withObject:args waitUntilDone:YES];
135 return [args lastObject];
136 }
137
138 - (void) _nativeGetTypes:(NSMutableArray *)args {
139 AWT_ASSERT_APPKIT_THREAD;
140
141 [args addObject:[[NSPasteboard generalPasteboard] types]];
142 }
143
144 - (void) javaSetData:(NSData *)inData forType:(NSString *) inFormat {
145
146 CClipboardUpdate *newUpdate = [[CClipboardUpdate alloc] initWithData:inData withFormat:inFormat];
147 [ThreadUtilities performOnMainThread:@selector(_nativeSetData:) on:self withObject:newUpdate waitUntilDone:YES];
148 [newUpdate release];
149 }
150
151 - (void) _nativeSetData:(CClipboardUpdate *)newUpdate {
152 AWT_ASSERT_APPKIT_THREAD;
153
154 [[NSPasteboard generalPasteboard] setData:[newUpdate data] forType:[newUpdate format]];
155 }
156
157 - (NSData *) javaGetDataForType:(NSString *) inFormat {
158
159 NSMutableArray *args = [NSMutableArray arrayWithObject:inFormat];
160 [ThreadUtilities performOnMainThread:@selector(_nativeGetDataForType:) on:self withObject:args waitUntilDone:YES];
161 return [args lastObject];
162 }
163
164 - (void) _nativeGetDataForType:(NSMutableArray *) args {
165 AWT_ASSERT_APPKIT_THREAD;
166
167 NSData *returnValue = [[NSPasteboard generalPasteboard] dataForType:[args objectAtIndex:0]];
168
169 if (returnValue) [args replaceObjectAtIndex:0 withObject:returnValue];
170 else [args removeLastObject];
171 }
172
173 - (void) checkPasteboard:(id)application {
174 AWT_ASSERT_APPKIT_THREAD;
175
176 // This is called via NSApplicationDidBecomeActiveNotification.
177
178 // If the change count on the general pasteboard is different than when we set it
179 // someone else put data on the clipboard. That means the current owner lost ownership.
180 NSInteger newChangeCount = [[NSPasteboard generalPasteboard] changeCount];
181
182 if (fChangeCount != newChangeCount) {
183 fChangeCount = newChangeCount;
184
185 // Notify that the content might be changed
186 static JNF_CLASS_CACHE(jc_CClipboard, "sun/lwawt/macosx/CClipboard");
187 static JNF_STATIC_MEMBER_CACHE(jm_contentChanged, jc_CClipboard, "notifyChanged", "()V");
188 JNIEnv *env = [ThreadUtilities getJNIEnv];
189 JNFCallStaticVoidMethod(env, jm_contentChanged);
190
191 // If we have a Java pasteboard owner, tell it that it doesn't own the pasteboard anymore.
192 static JNF_MEMBER_CACHE(jm_lostOwnership, jc_CClipboard, "notifyLostOwnership", "()V");
193 @synchronized(self) {
194 if (fClipboardOwner) {
195 JNIEnv *env = [ThreadUtilities getJNIEnv];
196 JNFCallVoidMethod(env, fClipboardOwner, jm_lostOwnership); // AWT_THREADING Safe (event)
197 JNFDeleteGlobalRef(env, fClipboardOwner);
198 fClipboardOwner = NULL;
199 }
200 }
201 }
202 }
203
204 @end
205
206 /*
207 * Class: sun_lwawt_macosx_CClipboard
208 * Method: declareTypes
209 * Signature: ([JLsun/awt/datatransfer/SunClipboard;)V
210 */
211 JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CClipboard_declareTypes
212 (JNIEnv *env, jobject inObject, jlongArray inTypes, jobject inJavaClip)
213 {
214 JNF_COCOA_ENTER(env);
215
216 jint i;
217 jint nElements = (*env)->GetArrayLength(env, inTypes);
218 NSMutableArray *formatArray = [NSMutableArray arrayWithCapacity:nElements];
219 jlong *elements = (*env)->GetPrimitiveArrayCritical(env, inTypes, NULL);
220
221 for (i = 0; i < nElements; i++) {
222 NSString *pbFormat = formatForIndex(elements[i]);
223 if (pbFormat)
224 [formatArray addObject:pbFormat];
225 }
226
227 (*env)->ReleasePrimitiveArrayCritical(env, inTypes, elements, JNI_ABORT);
228 [[CClipboard sharedClipboard] javaDeclareTypes:formatArray withOwner:inJavaClip jniEnv:env];
229 JNF_COCOA_EXIT(env);
230 }
231
232 /*
233 * Class: sun_lwawt_macosx_CClipboard
234 * Method: setData
235 * Signature: ([BJ)V
236 */
237 JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CClipboard_setData
238 (JNIEnv *env, jobject inObject, jbyteArray inBytes, jlong inFormat)
239 {
240 if (inBytes == NULL) {
241 return;
242 }
243
244 JNF_COCOA_ENTER(env);
245 jint nBytes = (*env)->GetArrayLength(env, inBytes);
246 jbyte *rawBytes = (*env)->GetPrimitiveArrayCritical(env, inBytes, NULL);
247 CHECK_NULL(rawBytes);
248 NSData *bytesAsData = [NSData dataWithBytes:rawBytes length:nBytes];
249 (*env)->ReleasePrimitiveArrayCritical(env, inBytes, rawBytes, JNI_ABORT);
250 NSString *format = formatForIndex(inFormat);
251 [[CClipboard sharedClipboard] javaSetData:bytesAsData forType:format];
252 JNF_COCOA_EXIT(env);
253 }
254
255 /*
256 * Class: sun_lwawt_macosx_CClipboard
257 * Method: getClipboardFormats
258 * Signature: (J)[J
259 */
260 JNIEXPORT jlongArray JNICALL Java_sun_lwawt_macosx_CClipboard_getClipboardFormats
261 (JNIEnv *env, jobject inObject)
262 {
263 jlongArray returnValue = NULL;
264 JNF_COCOA_ENTER(env);
265
266 NSArray *dataTypes = [[CClipboard sharedClipboard] javaGetTypes];
267 NSUInteger nFormats = [dataTypes count];
268 NSUInteger knownFormats = 0;
269 NSUInteger i;
270
271 // There can be any number of formats on the general pasteboard. Find out which ones
272 // we know about (i.e., live in the flavormap.properties).
273 for (i = 0; i < nFormats; i++) {
274 NSString *format = (NSString *)[dataTypes objectAtIndex:i];
275 if (indexForFormat(format) != -1)
276 knownFormats++;
277 }
278
279 returnValue = (*env)->NewLongArray(env, knownFormats);
280 if (returnValue == NULL) {
281 return NULL;
282 }
283
284 if (knownFormats == 0) {
285 return returnValue;
286 }
287
288 // Now go back and map the formats we found back to Java indexes.
289 jboolean isCopy;
290 jlong *lFormats = (*env)->GetLongArrayElements(env, returnValue, &isCopy);
291 jlong *saveFormats = lFormats;
292
293 for (i = 0; i < nFormats; i++) {
294 NSString *format = (NSString *)[dataTypes objectAtIndex:i];
295 jlong index = indexForFormat(format);
296
297 if (index != -1) {
298 *lFormats = index;
299 lFormats++;
300 }
301 }
302
303 (*env)->ReleaseLongArrayElements(env, returnValue, saveFormats, JNI_COMMIT);
304 JNF_COCOA_EXIT(env);
305 return returnValue;
306 }
307
308 /*
309 * Class: sun_lwawt_macosx_CClipboard
310 * Method: getClipboardData
311 * Signature: (JJ)[B
312 */
313 JNIEXPORT jbyteArray JNICALL Java_sun_lwawt_macosx_CClipboard_getClipboardData
314 (JNIEnv *env, jobject inObject, jlong format)
315 {
316 jbyteArray returnValue = NULL;
317
318 // Note that this routine makes no attempt to interpret the data, since we're returning
319 // a byte array back to Java. CDataTransferer will do that if necessary.
320 JNF_COCOA_ENTER(env);
321
322 NSString *formatAsString = formatForIndex(format);
323 NSData *clipData = [[CClipboard sharedClipboard] javaGetDataForType:formatAsString];
324
325 if (clipData == NULL) {
326 [JNFException raise:env as:"java/io/IOException" reason:"Font transform has NaN position"];
327 return NULL;
328 }
329
330 NSUInteger dataSize = [clipData length];
331 returnValue = (*env)->NewByteArray(env, dataSize);
332 if (returnValue == NULL) {
333 return NULL;
334 }
335
336 if (dataSize != 0) {
337 const void *dataBuffer = [clipData bytes];
338 (*env)->SetByteArrayRegion(env, returnValue, 0, dataSize, (jbyte *)dataBuffer);
339 }
340
341 JNF_COCOA_EXIT(env);
342 return returnValue;
343 }
344
345 /*
346 * Class: sun_lwawt_macosx_CClipboard
347 * Method: checkPasteboard
348 * Signature: ()V
349 */
350 JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CClipboard_checkPasteboard
351 (JNIEnv *env, jobject inObject )
352 {
353 JNF_COCOA_ENTER(env);
354
355 [ThreadUtilities performOnMainThreadWaiting:YES block:^(){
356 [[CClipboard sharedClipboard] checkPasteboard:nil];
357 }];
358
359 JNF_COCOA_EXIT(env);
360 }
361
362