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/*
**
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#define LOG_TAG "webcoreglue"
#include "config.h"
#include "WebCoreJni.h"
#include "jni_utility.h"
#include <jni.h>
#include <utils/Log.h>
namespace android {
extern int register_webframe(JNIEnv*);
extern int register_javabridge(JNIEnv*);
extern int register_resource_loader(JNIEnv*);
extern int register_webviewcore(JNIEnv*);
extern int register_webhistory(JNIEnv*);
extern int register_webicondatabase(JNIEnv*);
extern int register_websettings(JNIEnv*);
extern int register_webview(JNIEnv*);
// 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;
}
JavaVM* jnienv_to_javavm(JNIEnv* env)
{
JavaVM* vm;
return env->GetJavaVM(&vm) >= 0 ? vm : NULL;
}
JNIEnv* javavm_to_jnienv(JavaVM* vm)
{
JNIEnv* env;
return vm->GetEnv((void **)&env, JNI_VERSION_1_4) >= 0 ? env : NULL;
}
}
struct RegistrationMethod {
const char* name;
int (*func)(JNIEnv*);
};
static RegistrationMethod gWebCoreRegMethods[] = {
{ "JavaBridge", android::register_javabridge },
{ "WebFrame", android::register_webframe },
{ "WebCoreResourceLoader", android::register_resource_loader },
{ "WebViewCore", android::register_webviewcore },
{ "WebHistory", android::register_webhistory },
{ "WebIconDatabase", android::register_webicondatabase },
{ "WebSettings", android::register_websettings },
{ "WebView", android::register_webview }
};
EXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved)
{
// Save the JavaVM pointer for use globally.
JSC::Bindings::setJavaVM(vm);
JNIEnv* env = NULL;
jint result = -1;
if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) {
LOGE("GetEnv failed!");
return result;
}
LOG_ASSERT(env, "Could not retrieve the env!");
// Instantiate the WeakReference fields.
android::gWeakRefClass = env->FindClass("java/lang/ref/WeakReference");
LOG_ASSERT(android::gWeakRefClass, "Could not find WeakReference");
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");
const RegistrationMethod* method = gWebCoreRegMethods;
const RegistrationMethod* end = method + sizeof(gWebCoreRegMethods)/sizeof(RegistrationMethod);
while (method != end) {
if (method->func(env) < 0) {
LOGE("%s registration failed!", method->name);
return result;
}
method++;
}
// Initialize rand() function. The rand() function is used in
// FileSystemAndroid to create a random temporary filename.
srand(time(NULL));
return JNI_VERSION_1_4;
}
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