1 files changed, 135 insertions, 0 deletions
diff --git a/services/jni/com_android_server_InputWindowHandle.cpp b/services/jni/com_android_server_InputWindowHandle.cpp
new file mode 100644
index 0000000..4d66212
--- /dev/null
+++ b/services/jni/com_android_server_InputWindowHandle.cpp
@@ -0,0 +1,135 @@
+/*
+ * 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 "InputWindowHandle"
+
+#include "JNIHelp.h"
+#include "jni.h"
+#include <android_runtime/AndroidRuntime.h>
+#include <utils/threads.h>
+
+#include "com_android_server_InputWindowHandle.h"
+#include "com_android_server_InputApplicationHandle.h"
+
+namespace android {
+
+static struct {
+    jclass clazz;
+
+    jfieldID ptr;
+    jfieldID inputApplicationHandle;
+} gInputWindowHandleClassInfo;
+
+static Mutex gHandleMutex;
+
+
+// --- NativeInputWindowHandle ---
+
+NativeInputWindowHandle::NativeInputWindowHandle(
+        const sp<InputApplicationHandle>& inputApplicationHandle, jweak objWeak) :
+        InputWindowHandle(inputApplicationHandle),
+        mObjWeak(objWeak) {
+}
+
+NativeInputWindowHandle::~NativeInputWindowHandle() {
+    JNIEnv* env = AndroidRuntime::getJNIEnv();
+    env->DeleteWeakGlobalRef(mObjWeak);
+}
+
+jobject NativeInputWindowHandle::getInputWindowHandleObjLocalRef(JNIEnv* env) {
+    return env->NewLocalRef(mObjWeak);
+}
+
+
+// --- Global functions ---
+
+sp<NativeInputWindowHandle> android_server_InputWindowHandle_getHandle(
+        JNIEnv* env, jobject inputWindowHandleObj) {
+    if (!inputWindowHandleObj) {
+        return NULL;
+    }
+
+    AutoMutex _l(gHandleMutex);
+
+    int ptr = env->GetIntField(inputWindowHandleObj, gInputWindowHandleClassInfo.ptr);
+    NativeInputWindowHandle* handle;
+    if (ptr) {
+        handle = reinterpret_cast<NativeInputWindowHandle*>(ptr);
+    } else {
+        jobject inputApplicationHandleObj = env->GetObjectField(inputWindowHandleObj,
+                gInputWindowHandleClassInfo.inputApplicationHandle);
+        sp<InputApplicationHandle> inputApplicationHandle =
+                android_server_InputApplicationHandle_getHandle(env, inputApplicationHandleObj);
+        env->DeleteLocalRef(inputApplicationHandleObj);
+
+        jweak objWeak = env->NewWeakGlobalRef(inputWindowHandleObj);
+        handle = new NativeInputWindowHandle(inputApplicationHandle, objWeak);
+        handle->incStrong(inputWindowHandleObj);
+        env->SetIntField(inputWindowHandleObj, gInputWindowHandleClassInfo.ptr,
+                reinterpret_cast<int>(handle));
+    }
+    return handle;
+}
+
+
+// --- JNI ---
+
+static void android_server_InputWindowHandle_nativeDispose(JNIEnv* env, jobject obj) {
+    AutoMutex _l(gHandleMutex);
+
+    int ptr = env->GetIntField(obj, gInputWindowHandleClassInfo.ptr);
+    if (ptr) {
+        env->SetIntField(obj, gInputWindowHandleClassInfo.ptr, 0);
+
+        NativeInputWindowHandle* handle = reinterpret_cast<NativeInputWindowHandle*>(ptr);
+        handle->decStrong(obj);
+    }
+}
+
+
+static JNINativeMethod gInputWindowHandleMethods[] = {
+    /* name, signature, funcPtr */
+    { "nativeDispose", "()V",
+            (void*) android_server_InputWindowHandle_nativeDispose },
+};
+
+#define FIND_CLASS(var, className) \
+        var = env->FindClass(className); \
+        LOG_FATAL_IF(! var, "Unable to find class " className); \
+        var = jclass(env->NewGlobalRef(var));
+
+#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_server_InputWindowHandle(JNIEnv* env) {
+    int res = jniRegisterNativeMethods(env, "com/android/server/InputWindowHandle",
+            gInputWindowHandleMethods, NELEM(gInputWindowHandleMethods));
+    LOG_FATAL_IF(res < 0, "Unable to register native methods.");
+
+    FIND_CLASS(gInputWindowHandleClassInfo.clazz, "com/android/server/InputWindowHandle");
+
+    GET_FIELD_ID(gInputWindowHandleClassInfo.ptr, gInputWindowHandleClassInfo.clazz,
+            "ptr", "I");
+
+    GET_FIELD_ID(gInputWindowHandleClassInfo.inputApplicationHandle,
+            gInputWindowHandleClassInfo.clazz,
+            "inputApplicationHandle", "Lcom/android/server/InputApplicationHandle;");
+
+    return 0;
+}
+
+} /* namespace android */