/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "InputApplicationHandle"
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#include <nativehelper/JNIHelp.h>
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#include "core_jni_helpers.h"
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#include "jni.h"
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#include <android_runtime/AndroidRuntime.h>
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#include <utils/threads.h>
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#include "android_hardware_input_InputApplicationHandle.h"
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#include "android_util_Binder.h"
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namespace android {
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static struct {
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jfieldID ptr;
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jfieldID name;
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jfieldID dispatchingTimeoutNanos;
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jfieldID token;
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} gInputApplicationHandleClassInfo;
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static Mutex gHandleMutex;
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// --- NativeInputApplicationHandle ---
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NativeInputApplicationHandle::NativeInputApplicationHandle(jweak objWeak) :
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mObjWeak(objWeak) {
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}
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NativeInputApplicationHandle::~NativeInputApplicationHandle() {
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JNIEnv* env = AndroidRuntime::getJNIEnv();
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env->DeleteWeakGlobalRef(mObjWeak);
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}
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jobject NativeInputApplicationHandle::getInputApplicationHandleObjLocalRef(JNIEnv* env) {
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return env->NewLocalRef(mObjWeak);
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}
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bool NativeInputApplicationHandle::updateInfo() {
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JNIEnv* env = AndroidRuntime::getJNIEnv();
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jobject obj = env->NewLocalRef(mObjWeak);
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if (!obj) {
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return false;
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}
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mInfo.name = getStringField(env, obj, gInputApplicationHandleClassInfo.name, "<null>");
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mInfo.dispatchingTimeout = env->GetLongField(obj,
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gInputApplicationHandleClassInfo.dispatchingTimeoutNanos);
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jobject tokenObj = env->GetObjectField(obj,
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gInputApplicationHandleClassInfo.token);
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if (tokenObj) {
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mInfo.token = ibinderForJavaObject(env, tokenObj);
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env->DeleteLocalRef(tokenObj);
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} else {
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mInfo.token.clear();
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}
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env->DeleteLocalRef(obj);
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return mInfo.token.get() != nullptr;
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}
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// --- Global functions ---
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sp<InputApplicationHandle> android_view_InputApplicationHandle_getHandle(
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JNIEnv* env, jobject inputApplicationHandleObj) {
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if (!inputApplicationHandleObj) {
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return NULL;
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}
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AutoMutex _l(gHandleMutex);
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jlong ptr = env->GetLongField(inputApplicationHandleObj, gInputApplicationHandleClassInfo.ptr);
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NativeInputApplicationHandle* handle;
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if (ptr) {
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handle = reinterpret_cast<NativeInputApplicationHandle*>(ptr);
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} else {
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jweak objWeak = env->NewWeakGlobalRef(inputApplicationHandleObj);
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handle = new NativeInputApplicationHandle(objWeak);
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handle->incStrong((void*)android_view_InputApplicationHandle_getHandle);
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env->SetLongField(inputApplicationHandleObj, gInputApplicationHandleClassInfo.ptr,
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reinterpret_cast<jlong>(handle));
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}
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return handle;
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}
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// --- JNI ---
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static void android_view_InputApplicationHandle_nativeDispose(JNIEnv* env, jobject obj) {
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AutoMutex _l(gHandleMutex);
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jlong ptr = env->GetLongField(obj, gInputApplicationHandleClassInfo.ptr);
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if (ptr) {
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env->SetLongField(obj, gInputApplicationHandleClassInfo.ptr, 0);
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NativeInputApplicationHandle* handle = reinterpret_cast<NativeInputApplicationHandle*>(ptr);
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handle->decStrong((void*)android_view_InputApplicationHandle_getHandle);
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}
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}
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static const JNINativeMethod gInputApplicationHandleMethods[] = {
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/* name, signature, funcPtr */
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{ "nativeDispose", "()V",
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(void*) android_view_InputApplicationHandle_nativeDispose },
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};
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#define FIND_CLASS(var, className) \
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var = env->FindClass(className); \
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LOG_FATAL_IF(! (var), "Unable to find class " className);
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#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
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var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
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LOG_FATAL_IF(! (var), "Unable to find field " fieldName);
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int register_android_view_InputApplicationHandle(JNIEnv* env) {
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int res = jniRegisterNativeMethods(env, "android/view/InputApplicationHandle",
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gInputApplicationHandleMethods, NELEM(gInputApplicationHandleMethods));
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(void) res; // Faked use when LOG_NDEBUG.
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LOG_FATAL_IF(res < 0, "Unable to register native methods.");
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jclass clazz;
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FIND_CLASS(clazz, "android/view/InputApplicationHandle");
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GET_FIELD_ID(gInputApplicationHandleClassInfo.ptr, clazz,
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"ptr", "J");
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GET_FIELD_ID(gInputApplicationHandleClassInfo.name, clazz,
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"name", "Ljava/lang/String;");
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GET_FIELD_ID(gInputApplicationHandleClassInfo.dispatchingTimeoutNanos,
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clazz,
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"dispatchingTimeoutNanos", "J");
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GET_FIELD_ID(gInputApplicationHandleClassInfo.token, clazz,
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"token", "Landroid/os/IBinder;");
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return 0;
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}
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} /* namespace android */
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