Centralize all system InputEventReceiver monitors.
Implement all system level InputEvent monitors as new
InputEventListeners. Only one InputChannel required and monitoring
can be enabled or disabled by registering with WindowManagerService.
Change-Id: I64714ab858342ed183c62b421098478ffb6637bc
diff --git a/services/java/com/android/server/wm/PointerEventDispatcher.java b/services/java/com/android/server/wm/PointerEventDispatcher.java
new file mode 100644
index 0000000..6b0e4c9
--- /dev/null
+++ b/services/java/com/android/server/wm/PointerEventDispatcher.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+package com.android.server.wm;
+
+import android.view.InputChannel;
+import android.view.InputDevice;
+import android.view.InputEvent;
+import android.view.InputEventReceiver;
+import android.view.MotionEvent;
+import android.view.WindowManagerPolicy.PointerEventListener;
+
+import com.android.server.UiThread;
+
+import java.util.ArrayList;
+
+public class PointerEventDispatcher extends InputEventReceiver {
+ ArrayList<PointerEventListener> mListeners = new ArrayList<PointerEventListener>();
+ PointerEventListener[] mListenersArray = new PointerEventListener[0];
+
+ public PointerEventDispatcher(InputChannel inputChannel) {
+ super(inputChannel, UiThread.getHandler().getLooper());
+ }
+
+ @Override
+ public void onInputEvent(InputEvent event) {
+ try {
+ if (event instanceof MotionEvent
+ && (event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) {
+ final MotionEvent motionEvent = (MotionEvent)event;
+ PointerEventListener[] listeners;
+ synchronized (mListeners) {
+ if (mListenersArray == null) {
+ mListenersArray = new PointerEventListener[mListeners.size()];
+ mListeners.toArray(mListenersArray);
+ }
+ listeners = mListenersArray;
+ }
+ for (int i = 0; i < listeners.length; ++i) {
+ listeners[i].onPointerEvent(motionEvent);
+ }
+ }
+ } finally {
+ finishInputEvent(event, false);
+ }
+ }
+
+ /**
+ * Add the specified listener to the list.
+ * @param listener The listener to add.
+ */
+ public void registerInputEventListener(PointerEventListener listener) {
+ synchronized (mListeners) {
+ if (mListeners.contains(listener)) {
+ throw new IllegalStateException("registerInputEventListener: trying to register" +
+ listener + " twice.");
+ }
+ mListeners.add(listener);
+ mListenersArray = null;
+ }
+ }
+
+ /**
+ * Remove the specified listener from the list.
+ * @param listener The listener to remove.
+ */
+ public void unregisterInputEventListener(PointerEventListener listener) {
+ synchronized (mListeners) {
+ if (!mListeners.contains(listener)) {
+ throw new IllegalStateException("registerInputEventListener: " + listener +
+ " not registered.");
+ }
+ mListeners.remove(listener);
+ mListenersArray = null;
+ }
+ }
+}