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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/*
* Copyright (C) 2018 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 android.inputmethodservice;
import static java.lang.annotation.RetentionPolicy.SOURCE;
import android.annotation.IntDef;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
import android.os.Looper;
import android.util.Log;
import android.view.InputChannel;
import android.view.KeyEvent;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.inputmethod.IMultiClientInputMethod;
import com.android.internal.inputmethod.IMultiClientInputMethodPrivilegedOperations;
import com.android.internal.inputmethod.MultiClientInputMethodPrivilegedOperations;
import java.lang.annotation.Retention;
import java.lang.ref.WeakReference;
final class MultiClientInputMethodServiceDelegateImpl {
private static final String TAG = "MultiClientInputMethodServiceDelegateImpl";
private final Object mLock = new Object();
@Retention(SOURCE)
@IntDef({InitializationPhase.INSTANTIATED,
InitializationPhase.ON_BIND_CALLED,
InitializationPhase.INITIALIZE_CALLED,
InitializationPhase.ON_UNBIND_CALLED,
InitializationPhase.ON_DESTROY_CALLED})
private @interface InitializationPhase {
int INSTANTIATED = 1;
int ON_BIND_CALLED = 2;
int INITIALIZE_CALLED = 3;
int ON_UNBIND_CALLED = 4;
int ON_DESTROY_CALLED = 5;
}
@GuardedBy("mLock")
@InitializationPhase
private int mInitializationPhase;
private final MultiClientInputMethodPrivilegedOperations mPrivOps =
new MultiClientInputMethodPrivilegedOperations();
private final MultiClientInputMethodServiceDelegate.ServiceCallback mServiceCallback;
private final Context mContext;
MultiClientInputMethodServiceDelegateImpl(Context context,
MultiClientInputMethodServiceDelegate.ServiceCallback serviceCallback) {
mInitializationPhase = InitializationPhase.INSTANTIATED;
mContext = context;
mServiceCallback = serviceCallback;
}
void onDestroy() {
synchronized (mLock) {
switch (mInitializationPhase) {
case InitializationPhase.INSTANTIATED:
case InitializationPhase.ON_UNBIND_CALLED:
mInitializationPhase = InitializationPhase.ON_DESTROY_CALLED;
break;
default:
Log.e(TAG, "unexpected state=" + mInitializationPhase);
break;
}
}
}
private static final class ServiceImpl extends IMultiClientInputMethod.Stub {
private final WeakReference<MultiClientInputMethodServiceDelegateImpl> mImpl;
ServiceImpl(MultiClientInputMethodServiceDelegateImpl service) {
mImpl = new WeakReference<>(service);
}
@Override
public void initialize(IMultiClientInputMethodPrivilegedOperations privOps) {
final MultiClientInputMethodServiceDelegateImpl service = mImpl.get();
if (service == null) {
return;
}
synchronized (service.mLock) {
switch (service.mInitializationPhase) {
case InitializationPhase.ON_BIND_CALLED:
service.mPrivOps.set(privOps);
service.mInitializationPhase = InitializationPhase.INITIALIZE_CALLED;
service.mServiceCallback.initialized();
break;
default:
Log.e(TAG, "unexpected state=" + service.mInitializationPhase);
break;
}
}
}
@Override
public void addClient(int clientId, int uid, int pid, int selfReportedDisplayId) {
final MultiClientInputMethodServiceDelegateImpl service = mImpl.get();
if (service == null) {
return;
}
service.mServiceCallback.addClient(clientId, uid, pid, selfReportedDisplayId);
}
@Override
public void removeClient(int clientId) {
final MultiClientInputMethodServiceDelegateImpl service = mImpl.get();
if (service == null) {
return;
}
service.mServiceCallback.removeClient(clientId);
}
}
IBinder onBind(Intent intent) {
synchronized (mLock) {
switch (mInitializationPhase) {
case InitializationPhase.INSTANTIATED:
mInitializationPhase = InitializationPhase.ON_BIND_CALLED;
return new ServiceImpl(this);
default:
Log.e(TAG, "unexpected state=" + mInitializationPhase);
break;
}
}
return null;
}
boolean onUnbind(Intent intent) {
synchronized (mLock) {
switch (mInitializationPhase) {
case InitializationPhase.ON_BIND_CALLED:
case InitializationPhase.INITIALIZE_CALLED:
mInitializationPhase = InitializationPhase.ON_UNBIND_CALLED;
mPrivOps.dispose();
break;
default:
Log.e(TAG, "unexpected state=" + mInitializationPhase);
break;
}
}
return false;
}
IBinder createInputMethodWindowToken(int displayId) {
return mPrivOps.createInputMethodWindowToken(displayId);
}
void acceptClient(int clientId,
MultiClientInputMethodServiceDelegate.ClientCallback clientCallback,
KeyEvent.DispatcherState dispatcherState, Looper looper) {
final InputChannel[] channels = InputChannel.openInputChannelPair("MSIMS-session");
final InputChannel writeChannel = channels[0];
final InputChannel readChannel = channels[1];
try {
final MultiClientInputMethodClientCallbackAdaptor callbackAdaptor =
new MultiClientInputMethodClientCallbackAdaptor(clientCallback, looper,
dispatcherState, readChannel);
mPrivOps.acceptClient(clientId, callbackAdaptor.createIInputMethodSession(),
callbackAdaptor.createIMultiClientInputMethodSession(), writeChannel);
} finally {
writeChannel.dispose();
}
}
void reportImeWindowTarget(int clientId, int targetWindowHandle, IBinder imeWindowToken) {
mPrivOps.reportImeWindowTarget(clientId, targetWindowHandle, imeWindowToken);
}
boolean isUidAllowedOnDisplay(int displayId, int uid) {
return mPrivOps.isUidAllowedOnDisplay(displayId, uid);
}
void setActive(int clientId, boolean active) {
mPrivOps.setActive(clientId, active);
}
}
|
