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      1 /* Copyright 2013, The Android Open Source Project
      2 **
      3 ** Licensed under the Apache License, Version 2.0 (the "License");
      4 ** you may not use this file except in compliance with the License.
      5 ** You may obtain a copy of the License at
      6 **
      7 **     http://www.apache.org/licenses/LICENSE-2.0
      8 **
      9 ** Unless required by applicable law or agreed to in writing, software
     10 ** distributed under the License is distributed on an "AS IS" BASIS,
     11 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 ** See the License for the specific language governing permissions and
     13 ** limitations under the License.
     14 */
     15 
     16 package android.view;
     17 
     18 import android.view.IWindowFocusObserver;
     19 
     20 /** {@hide} */
     21 interface IWindowId
     22 {
     23     void registerFocusObserver(IWindowFocusObserver observer);
     24     void unregisterFocusObserver(IWindowFocusObserver observer);
     25     boolean isFocused();
     26 }
     27