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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.view;
     18 
     19 import android.annotation.Nullable;
     20 import android.view.ActionMode.Callback;
     21 import android.view.WindowManager.LayoutParams;
     22 import android.view.accessibility.AccessibilityEvent;
     23 
     24 import java.util.List;
     25 
     26 /**
     27  * An empty implementation of {@link Window.Callback} that always returns null/false.
     28  */
     29 public class WindowCallback implements Window.Callback {
     30     @Override
     31     public boolean dispatchKeyEvent(KeyEvent event) {
     32         return false;
     33     }
     34 
     35     @Override
     36     public boolean dispatchKeyShortcutEvent(KeyEvent event) {
     37         return false;
     38     }
     39 
     40     @Override
     41     public boolean dispatchTouchEvent(MotionEvent event) {
     42         return false;
     43     }
     44 
     45     @Override
     46     public boolean dispatchTrackballEvent(MotionEvent event) {
     47         return false;
     48     }
     49 
     50     @Override
     51     public boolean dispatchGenericMotionEvent(MotionEvent event) {
     52         return false;
     53     }
     54 
     55     @Override
     56     public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
     57         return false;
     58     }
     59 
     60     @Override
     61     public View onCreatePanelView(int featureId) {
     62         return null;
     63     }
     64 
     65     @Override
     66     public boolean onCreatePanelMenu(int featureId, Menu menu) {
     67         return false;
     68     }
     69 
     70     @Override
     71     public boolean onPreparePanel(int featureId, View view, Menu menu) {
     72         return false;
     73     }
     74 
     75     @Override
     76     public boolean onMenuOpened(int featureId, Menu menu) {
     77         return false;
     78     }
     79 
     80     @Override
     81     public boolean onMenuItemSelected(int featureId, MenuItem item) {
     82         return false;
     83     }
     84 
     85     @Override
     86     public void onWindowAttributesChanged(LayoutParams attrs) {
     87 
     88     }
     89 
     90     @Override
     91     public void onContentChanged() {
     92 
     93     }
     94 
     95     @Override
     96     public void onWindowFocusChanged(boolean hasFocus) {
     97 
     98     }
     99 
    100     @Override
    101     public void onAttachedToWindow() {
    102 
    103     }
    104 
    105     @Override
    106     public void onDetachedFromWindow() {
    107 
    108     }
    109 
    110     @Override
    111     public void onPanelClosed(int featureId, Menu menu) {
    112 
    113     }
    114 
    115     @Override
    116     public boolean onSearchRequested(SearchEvent searchEvent) {
    117         return onSearchRequested();
    118     }
    119 
    120     @Override
    121     public boolean onSearchRequested() {
    122         return false;
    123     }
    124 
    125     @Override
    126     public ActionMode onWindowStartingActionMode(Callback callback) {
    127         return null;
    128     }
    129 
    130     @Override
    131     public ActionMode onWindowStartingActionMode(Callback callback, int type) {
    132         return null;
    133     }
    134 
    135     @Override
    136     public void onActionModeStarted(ActionMode mode) {
    137 
    138     }
    139 
    140     @Override
    141     public void onActionModeFinished(ActionMode mode) {
    142 
    143     }
    144 }
    145