1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
* Copyright (C) 2011 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.accessibility;
import com.android.server.wm.InputFilter;
import android.content.Context;
import android.util.Slog;
import android.view.InputEvent;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.WindowManagerPolicy;
/**
* Input filter for accessibility.
*
* Currently just a stub but will eventually implement touch exploration, etc.
*/
public class AccessibilityInputFilter extends InputFilter {
private static final String TAG = "AccessibilityInputFilter";
private static final boolean DEBUG = true;
private final Context mContext;
public AccessibilityInputFilter(Context context) {
super(context.getMainLooper());
mContext = context;
}
@Override
public void onInstalled() {
if (DEBUG) {
Slog.d(TAG, "Accessibility input filter installed.");
}
super.onInstalled();
}
@Override
public void onUninstalled() {
if (DEBUG) {
Slog.d(TAG, "Accessibility input filter uninstalled.");
}
super.onUninstalled();
}
@Override
public void onInputEvent(InputEvent event, int policyFlags) {
if (DEBUG) {
Slog.d(TAG, "Accessibility input filter received input event: "
+ event + ", policyFlags=0x" + Integer.toHexString(policyFlags));
}
// To prove that this is working as intended, we will silently transform
// Q key presses into non-repeating Z's as part of this stub implementation.
// TODO: Replace with the real thing.
if (event instanceof KeyEvent) {
final KeyEvent keyEvent = (KeyEvent)event;
if (keyEvent.getKeyCode() == KeyEvent.KEYCODE_Q) {
if (keyEvent.getRepeatCount() == 0) {
sendInputEvent(new KeyEvent(keyEvent.getDownTime(), keyEvent.getEventTime(),
keyEvent.getAction(), KeyEvent.KEYCODE_Z, keyEvent.getRepeatCount(),
keyEvent.getMetaState(), keyEvent.getDeviceId(), keyEvent.getScanCode(),
keyEvent.getFlags(), keyEvent.getSource()),
policyFlags | WindowManagerPolicy.FLAG_DISABLE_KEY_REPEAT);
}
return;
}
}
super.onInputEvent(event, policyFlags);
}
}
|
