| /* |
| * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #ifndef AWT_DATATRANSFERER_H |
| #define AWT_DATATRANSFERER_H |
| |
| #include "stdhdrs.h" |
| struct IUnknown; |
| |
| class AwtDataTransferer { |
| public: |
| static jobject GetDataTransferer(JNIEnv* env); |
| static jbyteArray ConvertData(JNIEnv* env, jobject source, jobject contents, |
| jlong format, jobject formatMap); |
| static jobject ConcatData(JNIEnv* env, jobject obj1, jobject obj2); |
| |
| static jbyteArray GetPaletteBytes(HGDIOBJ hGdiObj, DWORD dwGdiObjType, |
| BOOL bFailSafe); |
| static jbyteArray LCIDToTextEncoding(JNIEnv *env, LCID lcid); |
| static void SecondaryMessageLoop(); |
| }; |
| |
| /* |
| * NOTE: You need these macros only if you take care of performance, since they |
| * provide proper caching. Otherwise you can use JNU_CallMethodByName etc. |
| */ |
| |
| /* |
| * This macro defines a function which returns the class for the specified |
| * class name with proper caching and error handling. |
| */ |
| #define DECLARE_JAVA_CLASS(javaclazz, name) \ |
| static jclass \ |
| get_ ## javaclazz(JNIEnv* env) { \ |
| static jclass javaclazz = NULL; \ |
| \ |
| if (JNU_IsNull(env, javaclazz)) { \ |
| jclass javaclazz ## Local = env->FindClass(name); \ |
| \ |
| if (!JNU_IsNull(env, javaclazz ## Local)) { \ |
| javaclazz = (jclass)env->NewGlobalRef(javaclazz ## Local); \ |
| env->DeleteLocalRef(javaclazz ## Local); \ |
| if (JNU_IsNull(env, javaclazz)) { \ |
| JNU_ThrowOutOfMemoryError(env, ""); \ |
| } \ |
| } \ |
| \ |
| if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) { \ |
| env->ExceptionDescribe(); \ |
| env->ExceptionClear(); \ |
| } \ |
| } \ |
| \ |
| DASSERT(!JNU_IsNull(env, javaclazz)); \ |
| \ |
| return javaclazz; \ |
| } |
| |
| /* |
| * The following macros defines blocks of code which retrieve a method of the |
| * specified class identified with the specified name and signature. |
| * The specified class should be previously declared with DECLARE_JAVA_CLASS. |
| * These macros should be placed at the beginning of a block, after definition |
| * of local variables, but before the code begins. |
| */ |
| #define DECLARE_VOID_JAVA_METHOD(method, javaclazz, name, signature) \ |
| static jmethodID method = NULL; \ |
| \ |
| if (JNU_IsNull(env, method)) { \ |
| jclass clazz = get_ ## javaclazz(env); \ |
| \ |
| if (JNU_IsNull(env, clazz)) { \ |
| return; \ |
| } \ |
| \ |
| method = env->GetMethodID(clazz, name, signature); \ |
| \ |
| if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) { \ |
| env->ExceptionDescribe(); \ |
| env->ExceptionClear(); \ |
| } \ |
| \ |
| if (JNU_IsNull(env, method)) { \ |
| DASSERT(FALSE); \ |
| return; \ |
| } \ |
| } |
| |
| #define DECLARE_JINT_JAVA_METHOD(method, javaclazz, name, signature) \ |
| static jmethodID method = NULL; \ |
| \ |
| if (JNU_IsNull(env, method)) { \ |
| jclass clazz = get_ ## javaclazz(env); \ |
| \ |
| if (JNU_IsNull(env, clazz)) { \ |
| return java_awt_dnd_DnDConstants_ACTION_NONE; \ |
| } \ |
| \ |
| method = env->GetMethodID(clazz, name, signature); \ |
| \ |
| if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) { \ |
| env->ExceptionDescribe(); \ |
| env->ExceptionClear(); \ |
| } \ |
| \ |
| if (JNU_IsNull(env, method)) { \ |
| DASSERT(FALSE); \ |
| return java_awt_dnd_DnDConstants_ACTION_NONE; \ |
| } \ |
| } |
| |
| #define DECLARE_OBJECT_JAVA_METHOD(method, javaclazz, name, signature) \ |
| static jmethodID method = NULL; \ |
| \ |
| if (JNU_IsNull(env, method)) { \ |
| jclass clazz = get_ ## javaclazz(env); \ |
| \ |
| if (JNU_IsNull(env, clazz)) { \ |
| return NULL; \ |
| } \ |
| \ |
| method = env->GetMethodID(clazz, name, signature); \ |
| \ |
| if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) { \ |
| env->ExceptionDescribe(); \ |
| env->ExceptionClear(); \ |
| } \ |
| \ |
| if (JNU_IsNull(env, method)) { \ |
| DASSERT(FALSE); \ |
| return NULL; \ |
| } \ |
| } |
| |
| #define DECLARE_STATIC_OBJECT_JAVA_METHOD(method, javaclazz, name, signature) \ |
| static jmethodID method = NULL; \ |
| jclass clazz = get_ ## javaclazz(env); \ |
| \ |
| if (JNU_IsNull(env, clazz)) { \ |
| return NULL; \ |
| } \ |
| \ |
| if (JNU_IsNull(env, method)) { \ |
| method = env->GetStaticMethodID(clazz, name, signature); \ |
| \ |
| if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) { \ |
| env->ExceptionDescribe(); \ |
| env->ExceptionClear(); \ |
| } \ |
| \ |
| if (JNU_IsNull(env, method)) { \ |
| DASSERT(FALSE); \ |
| return NULL; \ |
| } \ |
| } |
| |
| #endif /* AWT_DATATRANSFERER_H */ |
