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
17package android.view;
18
19import android.view.ActionMode.Callback;
20import android.view.WindowManager.LayoutParams;
21import android.view.accessibility.AccessibilityEvent;
22
23/**
24 * An empty implementation of {@link Window.Callback} that always returns null/false.
25 */
26public class WindowCallback implements Window.Callback {
27    @Override
28    public boolean dispatchKeyEvent(KeyEvent event) {
29        return false;
30    }
31
32    @Override
33    public boolean dispatchKeyShortcutEvent(KeyEvent event) {
34        return false;
35    }
36
37    @Override
38    public boolean dispatchTouchEvent(MotionEvent event) {
39        return false;
40    }
41
42    @Override
43    public boolean dispatchTrackballEvent(MotionEvent event) {
44        return false;
45    }
46
47    @Override
48    public boolean dispatchGenericMotionEvent(MotionEvent event) {
49        return false;
50    }
51
52    @Override
53    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
54        return false;
55    }
56
57    @Override
58    public View onCreatePanelView(int featureId) {
59        return null;
60    }
61
62    @Override
63    public boolean onCreatePanelMenu(int featureId, Menu menu) {
64        return false;
65    }
66
67    @Override
68    public boolean onPreparePanel(int featureId, View view, Menu menu) {
69        return false;
70    }
71
72    @Override
73    public boolean onMenuOpened(int featureId, Menu menu) {
74        return false;
75    }
76
77    @Override
78    public boolean onMenuItemSelected(int featureId, MenuItem item) {
79        return false;
80    }
81
82    @Override
83    public void onWindowAttributesChanged(LayoutParams attrs) {
84
85    }
86
87    @Override
88    public void onContentChanged() {
89
90    }
91
92    @Override
93    public void onWindowFocusChanged(boolean hasFocus) {
94
95    }
96
97    @Override
98    public void onAttachedToWindow() {
99
100    }
101
102    @Override
103    public void onDetachedFromWindow() {
104
105    }
106
107    @Override
108    public void onPanelClosed(int featureId, Menu menu) {
109
110    }
111
112    @Override
113    public boolean onSearchRequested() {
114        return false;
115    }
116
117    @Override
118    public ActionMode onWindowStartingActionMode(Callback callback) {
119        return null;
120    }
121
122    @Override
123    public void onActionModeStarted(ActionMode mode) {
124
125    }
126
127    @Override
128    public void onActionModeFinished(ActionMode mode) {
129
130    }
131}
132