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/*
* 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;
}
}
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