Import Android SDK Platform PI [4335822]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4335822 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-sources-4335822.zip

AndroidVersion.ApiLevel has been modified to appear as 28

Change-Id: Ic8f04be005a71c2b9abeaac754d8da8d6f9a2c32

1 files changed, 162 insertions, 0 deletions

diff --git a/android/view/InputQueue.java b/android/view/InputQueue.java
new file mode 100644
index 00000000..582ae79a
--- /dev/null
+++ b/android/view/InputQueue.java
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2010 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 android.view;
+
+import android.os.Looper;
+import android.os.MessageQueue;
+import android.util.LongSparseArray;
+import android.util.Pools.Pool;
+import android.util.Pools.SimplePool;
+
+import dalvik.system.CloseGuard;
+
+import java.lang.ref.WeakReference;
+
+/**
+ * An input queue provides a mechanism for an application to receive incoming
+ * input events.  Currently only usable from native code.
+ */
+public final class InputQueue {
+    private final LongSparseArray<ActiveInputEvent> mActiveEventArray =
+            new LongSparseArray<ActiveInputEvent>(20);
+    private final Pool<ActiveInputEvent> mActiveInputEventPool =
+            new SimplePool<ActiveInputEvent>(20);
+
+    private final CloseGuard mCloseGuard = CloseGuard.get();
+
+    private long mPtr;
+
+    private static native long nativeInit(WeakReference<InputQueue> weakQueue,
+            MessageQueue messageQueue);
+    private static native long nativeSendKeyEvent(long ptr, KeyEvent e, boolean preDispatch);
+    private static native long nativeSendMotionEvent(long ptr, MotionEvent e);
+    private static native void nativeDispose(long ptr);
+
+    /** @hide */
+    public InputQueue() {
+        mPtr = nativeInit(new WeakReference<InputQueue>(this), Looper.myQueue());
+
+        mCloseGuard.open("dispose");
+    }
+
+    @Override
+    protected void finalize() throws Throwable {
+        try {
+            dispose(true);
+        } finally {
+            super.finalize();
+        }
+    }
+
+    /** @hide */
+    public void dispose() {
+        dispose(false);
+    }
+
+    /** @hide */
+    public void dispose(boolean finalized) {
+        if (mCloseGuard != null) {
+            if (finalized) {
+                mCloseGuard.warnIfOpen();
+            }
+            mCloseGuard.close();
+        }
+
+        if (mPtr != 0) {
+            nativeDispose(mPtr);
+            mPtr = 0;
+        }
+    }
+
+    /** @hide */
+    public long getNativePtr() {
+        return mPtr;
+    }
+
+    /** @hide */
+    public void sendInputEvent(InputEvent e, Object token, boolean predispatch,
+            FinishedInputEventCallback callback) {
+        ActiveInputEvent event = obtainActiveInputEvent(token, callback);
+        long id;
+        if (e instanceof KeyEvent) {
+            id = nativeSendKeyEvent(mPtr, (KeyEvent) e, predispatch);
+        } else {
+            id = nativeSendMotionEvent(mPtr, (MotionEvent) e);
+        }
+        mActiveEventArray.put(id, event);
+    }
+
+    private void finishInputEvent(long id, boolean handled) {
+        int index = mActiveEventArray.indexOfKey(id);
+        if (index >= 0) {
+            ActiveInputEvent e = mActiveEventArray.valueAt(index);
+            mActiveEventArray.removeAt(index);
+            e.mCallback.onFinishedInputEvent(e.mToken, handled);
+            recycleActiveInputEvent(e);
+        }
+    }
+
+    private ActiveInputEvent obtainActiveInputEvent(Object token,
+            FinishedInputEventCallback callback) {
+        ActiveInputEvent e = mActiveInputEventPool.acquire();
+        if (e == null) {
+            e = new ActiveInputEvent();
+        }
+        e.mToken = token;
+        e.mCallback = callback;
+        return e;
+    }
+
+    private void recycleActiveInputEvent(ActiveInputEvent e) {
+        e.recycle();
+        mActiveInputEventPool.release(e);
+    }
+
+    private final class ActiveInputEvent {
+        public Object mToken;
+        public FinishedInputEventCallback mCallback;
+
+        public void recycle() {
+            mToken = null;
+            mCallback = null;
+        }
+    }
+
+    /**
+     * Interface to receive notification of when an InputQueue is associated
+     * and dissociated with a thread.
+     */
+    public static interface Callback {
+        /**
+         * Called when the given InputQueue is now associated with the
+         * thread making this call, so it can start receiving events from it.
+         */
+        void onInputQueueCreated(InputQueue queue);
+
+        /**
+         * Called when the given InputQueue is no longer associated with
+         * the thread and thus not dispatching events.
+         */
+        void onInputQueueDestroyed(InputQueue queue);
+    }
+
+    /** @hide */
+    public static interface FinishedInputEventCallback {
+        void onFinishedInputEvent(Object token, boolean handled);
+    }
+
+}