/* * 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 #include "core_jni_helpers.h" #include "jni.h" #include #include #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; } mInfo.name = getStringField(env, obj, gInputApplicationHandleClassInfo.name, ""); 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 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(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(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(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 */