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/*
* Copyright (C) 2011 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 "InputApplicationHandle"
#include <nativehelper/JNIHelp.h>
#include "core_jni_helpers.h"
#include "jni.h"
#include <android_runtime/AndroidRuntime.h>
#include <utils/threads.h>
#include "android_hardware_input_InputApplicationHandle.h"
#include "android_util_Binder.h"
namespace android {
static struct {
jfieldID ptr;
jfieldID name;
jfieldID dispatchingTimeoutNanos;
jfieldID token;
} gInputApplicationHandleClassInfo;
static Mutex gHandleMutex;
// --- NativeInputApplicationHandle ---
NativeInputApplicationHandle::NativeInputApplicationHandle(jweak objWeak) :
mObjWeak(objWeak) {
}
NativeInputApplicationHandle::~NativeInputApplicationHandle() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
env->DeleteWeakGlobalRef(mObjWeak);
}
jobject NativeInputApplicationHandle::getInputApplicationHandleObjLocalRef(JNIEnv* env) {
return env->NewLocalRef(mObjWeak);
}
bool NativeInputApplicationHandle::updateInfo() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jobject obj = env->NewLocalRef(mObjWeak);
if (!obj) {
return false;
}
if (mInfo.token.get() != nullptr) {
// The java fields are immutable, so it doesn't need to update again.
env->DeleteLocalRef(obj);
return true;
}
mInfo.name = getStringField(env, obj, gInputApplicationHandleClassInfo.name, "<null>");
mInfo.dispatchingTimeout = env->GetLongField(obj,
gInputApplicationHandleClassInfo.dispatchingTimeoutNanos);
jobject tokenObj = env->GetObjectField(obj,
gInputApplicationHandleClassInfo.token);
if (tokenObj) {
mInfo.token = ibinderForJavaObject(env, tokenObj);
env->DeleteLocalRef(tokenObj);
} else {
mInfo.token.clear();
}
env->DeleteLocalRef(obj);
return mInfo.token.get() != nullptr;
}
// --- Global functions ---
sp<InputApplicationHandle> android_view_InputApplicationHandle_getHandle(
JNIEnv* env, jobject inputApplicationHandleObj) {
if (!inputApplicationHandleObj) {
return NULL;
}
AutoMutex _l(gHandleMutex);
jlong ptr = env->GetLongField(inputApplicationHandleObj, gInputApplicationHandleClassInfo.ptr);
NativeInputApplicationHandle* handle;
if (ptr) {
handle = reinterpret_cast<NativeInputApplicationHandle*>(ptr);
} else {
jweak objWeak = env->NewWeakGlobalRef(inputApplicationHandleObj);
handle = new NativeInputApplicationHandle(objWeak);
handle->incStrong((void*)android_view_InputApplicationHandle_getHandle);
env->SetLongField(inputApplicationHandleObj, gInputApplicationHandleClassInfo.ptr,
reinterpret_cast<jlong>(handle));
}
return handle;
}
// --- JNI ---
static void android_view_InputApplicationHandle_nativeDispose(JNIEnv* env, jobject obj) {
AutoMutex _l(gHandleMutex);
jlong ptr = env->GetLongField(obj, gInputApplicationHandleClassInfo.ptr);
if (ptr) {
env->SetLongField(obj, gInputApplicationHandleClassInfo.ptr, 0);
NativeInputApplicationHandle* handle = reinterpret_cast<NativeInputApplicationHandle*>(ptr);
handle->decStrong((void*)android_view_InputApplicationHandle_getHandle);
}
}
static const JNINativeMethod gInputApplicationHandleMethods[] = {
/* name, signature, funcPtr */
{ "nativeDispose", "()V",
(void*) android_view_InputApplicationHandle_nativeDispose },
};
#define FIND_CLASS(var, className) \
var = env->FindClass(className); \
LOG_FATAL_IF(! (var), "Unable to find class " className);
#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
LOG_FATAL_IF(! (var), "Unable to find field " fieldName);
int register_android_view_InputApplicationHandle(JNIEnv* env) {
int res = jniRegisterNativeMethods(env, "android/view/InputApplicationHandle",
gInputApplicationHandleMethods, NELEM(gInputApplicationHandleMethods));
(void) res; // Faked use when LOG_NDEBUG.
LOG_FATAL_IF(res < 0, "Unable to register native methods.");
jclass clazz;
FIND_CLASS(clazz, "android/view/InputApplicationHandle");
GET_FIELD_ID(gInputApplicationHandleClassInfo.ptr, clazz,
"ptr", "J");
GET_FIELD_ID(gInputApplicationHandleClassInfo.name, clazz,
"name", "Ljava/lang/String;");
GET_FIELD_ID(gInputApplicationHandleClassInfo.dispatchingTimeoutNanos,
clazz,
"dispatchingTimeoutNanos", "J");
GET_FIELD_ID(gInputApplicationHandleClassInfo.token, clazz,
"token", "Landroid/os/IBinder;");
return 0;
}
} /* namespace android */
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