blob: 30cff039f11ad702a8ccfeccae50b9cef8e9c61f (
plain)
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
|
/*
* Copyright (C) 2013 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.policy.keyguard;
import android.app.ActivityManager;
import android.content.Context;
import android.os.RemoteException;
import android.util.Slog;
import com.android.internal.policy.IKeyguardService;
import com.android.internal.policy.IKeyguardStateCallback;
import com.android.internal.widget.LockPatternUtils;
import java.io.PrintWriter;
/**
* Maintains a cached copy of Keyguard's state.
* @hide
*/
public class KeyguardStateMonitor extends IKeyguardStateCallback.Stub {
private static final String TAG = "KeyguardStateMonitor";
// These cache the current state of Keyguard to improve performance and avoid deadlock. After
// Keyguard changes its state, it always triggers a layout in window manager. Because
// IKeyguardStateCallback is synchronous and because these states are declared volatile, it's
// guaranteed that window manager picks up the new state all the time in the layout caused by
// the state change of Keyguard. To be extra safe, assume most restrictive values until Keyguard
// tells us the actual value.
private volatile boolean mIsShowing = true;
private volatile boolean mSimSecure = true;
private volatile boolean mInputRestricted = true;
private int mCurrentUserId;
private final LockPatternUtils mLockPatternUtils;
public KeyguardStateMonitor(Context context, IKeyguardService service) {
mLockPatternUtils = new LockPatternUtils(context);
mCurrentUserId = ActivityManager.getCurrentUser();
try {
service.addStateMonitorCallback(this);
} catch (RemoteException e) {
Slog.w(TAG, "Remote Exception", e);
}
}
public boolean isShowing() {
return mIsShowing;
}
public boolean isSecure() {
return mLockPatternUtils.isSecure(getCurrentUser()) || mSimSecure;
}
public boolean isInputRestricted() {
return mInputRestricted;
}
@Override // Binder interface
public void onShowingStateChanged(boolean showing) {
mIsShowing = showing;
}
@Override // Binder interface
public void onSimSecureStateChanged(boolean simSecure) {
mSimSecure = simSecure;
}
public synchronized void setCurrentUser(int userId) {
mCurrentUserId = userId;
}
private synchronized int getCurrentUser() {
return mCurrentUserId;
}
@Override // Binder interface
public void onInputRestrictedStateChanged(boolean inputRestricted) {
mInputRestricted = inputRestricted;
}
public void dump(String prefix, PrintWriter pw) {
pw.println(prefix + TAG);
prefix += " ";
pw.println(prefix + "mIsShowing=" + mIsShowing);
pw.println(prefix + "mSimSecure=" + mSimSecure);
pw.println(prefix + "mInputRestricted=" + mInputRestricted);
pw.println(prefix + "mCurrentUserId=" + mCurrentUserId);
}
}
|