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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* 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.settings;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Parcel;
import android.os.Parcelable;
import android.preference.DialogPreference;
import android.provider.Settings;
import android.util.AttributeSet;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
/**
* Preference for enabling accessibility script injection. It displays a warning
* dialog before enabling the preference.
*/
public class AccessibilityEnableScriptInjectionPreference extends DialogPreference {
private boolean mInjectionAllowed;
private boolean mSendClickAccessibilityEvent;
public AccessibilityEnableScriptInjectionPreference(Context context, AttributeSet attrs) {
super(context, attrs);
updateSummary();
}
public void setInjectionAllowed(boolean injectionAllowed) {
if (mInjectionAllowed != injectionAllowed) {
mInjectionAllowed = injectionAllowed;
persistBoolean(injectionAllowed);
updateSummary();
}
}
public boolean isInjectionAllowed() {
return mInjectionAllowed;
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
View summaryView = view.findViewById(com.android.internal.R.id.summary);
sendAccessibilityEvent(summaryView);
}
private void sendAccessibilityEvent(View view) {
// Since the view is still not attached we create, populate,
// and send the event directly since we do not know when it
// will be attached and posting commands is not as clean.
AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(getContext());
if (mSendClickAccessibilityEvent && accessibilityManager.isEnabled()) {
AccessibilityEvent event = AccessibilityEvent.obtain();
event.setEventType(AccessibilityEvent.TYPE_VIEW_CLICKED);
view.onInitializeAccessibilityEvent(event);
view.dispatchPopulateAccessibilityEvent(event);
accessibilityManager.sendAccessibilityEvent(event);
}
mSendClickAccessibilityEvent = false;
}
@Override
protected void onClick() {
if (isInjectionAllowed()) {
setInjectionAllowed(false);
// Update the system setting only upon user action.
setSystemSetting(false);
mSendClickAccessibilityEvent = true;
} else {
super.onClick();
mSendClickAccessibilityEvent = false;
}
}
@Override
protected Object onGetDefaultValue(TypedArray a, int index) {
return a.getBoolean(index, false);
}
@Override
protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
setInjectionAllowed(restoreValue
? getPersistedBoolean(mInjectionAllowed)
: (Boolean) defaultValue);
}
@Override
protected void onDialogClosed(boolean result) {
setInjectionAllowed(result);
if (result) {
// Update the system setting only upon user action.
setSystemSetting(true);
}
}
@Override
protected Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
if (isPersistent()) {
return superState;
}
SavedState myState = new SavedState(superState);
myState.mInjectionAllowed = mInjectionAllowed;
return myState;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if (state == null || !state.getClass().equals(SavedState.class)) {
super.onRestoreInstanceState(state);
return;
}
SavedState myState = (SavedState) state;
super.onRestoreInstanceState(myState.getSuperState());
setInjectionAllowed(myState.mInjectionAllowed);
}
private void updateSummary() {
setSummary(mInjectionAllowed
? getContext().getString(R.string.accessibility_script_injection_allowed)
: getContext().getString(R.string.accessibility_script_injection_disallowed));
}
private void setSystemSetting(boolean enabled) {
Settings.Secure.putInt(getContext().getContentResolver(),
Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, enabled ? 1 : 0);
}
private static class SavedState extends BaseSavedState {
private boolean mInjectionAllowed;
public SavedState(Parcel source) {
super(source);
mInjectionAllowed = (source.readInt() == 1);
}
@Override
public void writeToParcel(Parcel parcel, int flags) {
super.writeToParcel(parcel, flags);
parcel.writeInt(mInjectionAllowed ? 1 : 0);
}
public SavedState(Parcelable superState) {
super(superState);
}
@SuppressWarnings("all")
public static final Parcelable.Creator<SavedState> CREATOR =
new Parcelable.Creator<SavedState>() {
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
}
|
