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 "CDataTransferer.h"
27 #import "ThreadUtilities.h"
28 #import "jni_util.h"
29 #import <Cocoa/Cocoa.h>
30 #import <JavaNativeFoundation/JavaNativeFoundation.h>
31
32 @interface CClipboard : NSObject { }
33 @property NSInteger changeCount;
34 @property jobject clipboardOwner;
35
36 + (CClipboard*)sharedClipboard;
37 - (void)declareTypes:(NSArray *)types withOwner:(jobject)owner jniEnv:(JNIEnv*)env;
38 - (void)checkPasteboard:(id)sender;
39 @end
40
41 @implementation CClipboard
42 @synthesize changeCount = _changeCount;
43 @synthesize clipboardOwner = _clipboardOwner;
44
45 // Clipboard creation is synchronized at the Java level
46 + (CClipboard*)sharedClipboard {
47 static CClipboard* sClipboard = nil;
48 if (sClipboard == nil) {
49 sClipboard = [[CClipboard alloc] init];
50 [[NSNotificationCenter defaultCenter] addObserver:sClipboard selector: @selector(checkPasteboard:)
51 name: NSApplicationDidBecomeActiveNotification
52 object: nil];
53 }
54
55 return sClipboard;
56 }
57
58 - (id)init {
59 if (self = [super init]) {
60 self.changeCount = [[NSPasteboard generalPasteboard] changeCount];
61 }
62 return self;
63 }
64
65 - (void)declareTypes:(NSArray*)types withOwner:(jobject)owner jniEnv:(JNIEnv*)env {
66 @synchronized(self) {
67 if (owner != NULL) {
68 if (self.clipboardOwner != NULL) {
69 JNFDeleteGlobalRef(env, self.clipboardOwner);
70 }
71 self.clipboardOwner = JNFNewGlobalRef(env, owner);
72 }
73 }
74 [ThreadUtilities performOnMainThreadWaiting:YES block:^() {
75 self.changeCount = [[NSPasteboard generalPasteboard] declareTypes:types owner:self];
76 }];
77 }
78
79 - (void)checkPasteboard:(id)sender {
80
81 NSInteger newChangeCount = [[NSPasteboard generalPasteboard] changeCount];
82
83 if (self.changeCount != newChangeCount) {
84 self.changeCount = newChangeCount;
85
86 // Notify that the content might be changed
87 static JNF_CLASS_CACHE(jc_CClipboard, "sun/lwawt/macosx/CClipboard");
88 static JNF_STATIC_MEMBER_CACHE(jm_contentChanged, jc_CClipboard, "notifyChanged", "()V");
89 JNIEnv *env = [ThreadUtilities getJNIEnv];
90 JNFCallStaticVoidMethod(env, jm_contentChanged);
91
92 // If we have a Java pasteboard owner, tell it that it doesn't own the pasteboard anymore.
93 static JNF_MEMBER_CACHE(jm_lostOwnership, jc_CClipboard, "notifyLostOwnership", "()V");
94 @synchronized(self) {
95 if (self.clipboardOwner) {
96 JNIEnv *env = [ThreadUtilities getJNIEnv];
97 JNFCallVoidMethod(env, self.clipboardOwner, jm_lostOwnership); // AWT_THREADING Safe (event)
98 JNFDeleteGlobalRef(env, self.clipboardOwner);
99 self.clipboardOwner = NULL;
100 }
101 }
102 }
103 }
104
105 @end
106
107 /*
108 * Class: sun_lwawt_macosx_CClipboard
109 * Method: declareTypes
110 * Signature: ([JLsun/awt/datatransfer/SunClipboard;)V
111 */
112 JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CClipboard_declareTypes
113 (JNIEnv *env, jobject inObject, jlongArray inTypes, jobject inJavaClip)
114 {
115 JNF_COCOA_ENTER(env);
116
117 jint i;
118 jint nElements = (*env)->GetArrayLength(env, inTypes);
119 NSMutableArray *formatArray = [NSMutableArray arrayWithCapacity:nElements];
120 jlong *elements = (*env)->GetPrimitiveArrayCritical(env, inTypes, NULL);
121
122 for (i = 0; i < nElements; i++) {
123 NSString *pbFormat = formatForIndex(elements[i]);
124 if (pbFormat)
125 [formatArray addObject:pbFormat];
126 }
127
128 (*env)->ReleasePrimitiveArrayCritical(env, inTypes, elements, JNI_ABORT);
129 [[CClipboard sharedClipboard] declareTypes:formatArray withOwner:inJavaClip jniEnv:env];
130 JNF_COCOA_EXIT(env);
131 }
132
133 /*
134 * Class: sun_lwawt_macosx_CClipboard
135 * Method: setData
136 * Signature: ([BJ)V
137 */
138 JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CClipboard_setData
139 (JNIEnv *env, jobject inObject, jbyteArray inBytes, jlong inFormat)
140 {
141 if (inBytes == NULL) {
142 return;
143 }
144
145 JNF_COCOA_ENTER(env);
146 jint nBytes = (*env)->GetArrayLength(env, inBytes);
147 jbyte *rawBytes = (*env)->GetPrimitiveArrayCritical(env, inBytes, NULL);
148 CHECK_NULL(rawBytes);
149 NSData *bytesAsData = [NSData dataWithBytes:rawBytes length:nBytes];
150 (*env)->ReleasePrimitiveArrayCritical(env, inBytes, rawBytes, JNI_ABORT);
151 NSString *format = formatForIndex(inFormat);
152 [ThreadUtilities performOnMainThreadWaiting:YES block:^() {
153 [[NSPasteboard generalPasteboard] setData:bytesAsData forType:format];
154 }];
155 JNF_COCOA_EXIT(env);
156 }
157
158 /*
159 * Class: sun_lwawt_macosx_CClipboard
160 * Method: getClipboardFormats
161 * Signature: (J)[J
162 */
163 JNIEXPORT jlongArray JNICALL Java_sun_lwawt_macosx_CClipboard_getClipboardFormats
164 (JNIEnv *env, jobject inObject)
165 {
166 jlongArray returnValue = NULL;
167 JNF_COCOA_ENTER(env);
168
169 __block NSArray* dataTypes;
170 [ThreadUtilities performOnMainThreadWaiting:YES block:^() {
171 dataTypes = [[[NSPasteboard generalPasteboard] types] retain];
172 }];
173 [dataTypes autorelease];
174
175 NSUInteger nFormats = [dataTypes count];
176 NSUInteger knownFormats = 0;
177 NSUInteger i;
178
179 // There can be any number of formats on the general pasteboard. Find out which ones
180 // we know about (i.e., live in the flavormap.properties).
181 for (i = 0; i < nFormats; i++) {
182 NSString *format = (NSString *)[dataTypes objectAtIndex:i];
183 if (indexForFormat(format) != -1)
184 knownFormats++;
185 }
186
187 returnValue = (*env)->NewLongArray(env, knownFormats);
188 if (returnValue == NULL) {
189 return NULL;
190 }
191
192 if (knownFormats == 0) {
193 return returnValue;
194 }
195
196 // Now go back and map the formats we found back to Java indexes.
197 jboolean isCopy;
198 jlong *lFormats = (*env)->GetLongArrayElements(env, returnValue, &isCopy);
199 jlong *saveFormats = lFormats;
200
201 for (i = 0; i < nFormats; i++) {
202 NSString *format = (NSString *)[dataTypes objectAtIndex:i];
203 jlong index = indexForFormat(format);
204
205 if (index != -1) {
206 *lFormats = index;
207 lFormats++;
208 }
209 }
210
211 (*env)->ReleaseLongArrayElements(env, returnValue, saveFormats, JNI_COMMIT);
212 JNF_COCOA_EXIT(env);
213 return returnValue;
214 }
215
216 /*
217 * Class: sun_lwawt_macosx_CClipboard
218 * Method: getClipboardData
219 * Signature: (JJ)[B
220 */
221 JNIEXPORT jbyteArray JNICALL Java_sun_lwawt_macosx_CClipboard_getClipboardData
222 (JNIEnv *env, jobject inObject, jlong format)
223 {
224 jbyteArray returnValue = NULL;
225
226 // Note that this routine makes no attempt to interpret the data, since we're returning
227 // a byte array back to Java. CDataTransferer will do that if necessary.
228 JNF_COCOA_ENTER(env);
229
230 NSString *formatAsString = formatForIndex(format);
231 __block NSData* clipData;
232 [ThreadUtilities performOnMainThreadWaiting:YES block:^() {
233 clipData = [[[NSPasteboard generalPasteboard] dataForType:formatAsString] retain];
234 }];
235
236 if (clipData == NULL) {
237 [JNFException raise:env as:"java/io/IOException" reason:"Font transform has NaN position"];
238 return NULL;
239 } else {
240 [clipData autorelease];
241 }
242
243 NSUInteger dataSize = [clipData length];
244 returnValue = (*env)->NewByteArray(env, dataSize);
245 if (returnValue == NULL) {
246 return NULL;
247 }
248
249 if (dataSize != 0) {
250 const void *dataBuffer = [clipData bytes];
251 (*env)->SetByteArrayRegion(env, returnValue, 0, dataSize, (jbyte *)dataBuffer);
252 }
253
254 JNF_COCOA_EXIT(env);
255 return returnValue;
256 }
257
258 /*
259 * Class: sun_lwawt_macosx_CClipboard
260 * Method: checkPasteboard
261 * Signature: ()V
262 */
263 JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CClipboard_checkPasteboard
264 (JNIEnv *env, jobject inObject )
265 {
266 JNF_COCOA_ENTER(env);
267
268 [ThreadUtilities performOnMainThreadWaiting:YES block:^(){
269 [[CClipboard sharedClipboard] checkPasteboard:nil];
270 }];
271
272 JNF_COCOA_EXIT(env);
273 }
274
275