| /* |
| * Copyright 2007, The Android Open Source Project |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #define LOG_TAG "webcoreglue" |
| |
| #include "config.h" |
| |
| #include "WebCoreJni.h" |
| #include "jni_utility.h" |
| #include <jni.h> |
| #include <utils/Log.h> |
| |
| namespace android { |
| |
| // Class, constructor, and get method on WeakReference |
| jclass gWeakRefClass; |
| jmethodID gWeakRefInit; |
| jmethodID gWeakRefGet; |
| |
| jobject adoptGlobalRef(JNIEnv* env, jobject obj) |
| { |
| // Create a WeakReference object |
| jobject ref = env->NewObject(gWeakRefClass, gWeakRefInit, obj); |
| // Increment the ref count of the WeakReference |
| ref = env->NewGlobalRef(ref); |
| return ref; |
| } |
| |
| AutoJObject getRealObject(JNIEnv* env, jobject obj) |
| { |
| jobject real = env->CallObjectMethod(obj, gWeakRefGet); |
| if (!real) |
| LOGE("The real object has been deleted"); |
| return AutoJObject(env, real); |
| } |
| |
| /** |
| * Helper method for checking java exceptions |
| * @return true if an exception occurred. |
| */ |
| bool checkException(JNIEnv* env) |
| { |
| if (env->ExceptionCheck() != 0) |
| { |
| LOGE("*** Uncaught exception returned from Java call!\n"); |
| env->ExceptionDescribe(); |
| return true; |
| } |
| return false; |
| } |
| |
| // This method is safe to call from the ui thread and the WebCore thread. |
| WebCore::String to_string(JNIEnv* env, jstring str) |
| { |
| if (!str || !env) |
| return WebCore::String(); |
| const jchar* s = env->GetStringChars(str, NULL); |
| if (!s) |
| return WebCore::String(); |
| WebCore::String ret(s, env->GetStringLength(str)); |
| env->ReleaseStringChars(str, s); |
| checkException(env); |
| return ret; |
| } |
| |
| int register_webcorejni(JNIEnv* env) { |
| // Instantiate the WeakReference fields. |
| jclass weakRef = env->FindClass("java/lang/ref/WeakReference"); |
| LOG_ASSERT(weakRef, "Could not find WeakReference"); |
| android::gWeakRefClass = (jclass)env->NewGlobalRef(weakRef); |
| android::gWeakRefInit = env->GetMethodID(android::gWeakRefClass, |
| "<init>", "(Ljava/lang/Object;)V"); |
| LOG_ASSERT(android::gWeakRefInit, |
| "Could not find constructor for WeakReference"); |
| android::gWeakRefGet = env->GetMethodID(android::gWeakRefClass, "get", |
| "()Ljava/lang/Object;"); |
| LOG_ASSERT(android::gWeakRefInit, |
| "Could not find get method for WeakReference"); |
| return JNI_OK; |
| } |
| |
| } |