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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
/*
* Copyright (C) 2008 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 com.android.internal.os.HandlerCaller;
import com.android.internal.view.IInputContext;
import com.android.internal.view.IInputMethod;
import com.android.internal.view.IInputMethodCallback;
import com.android.internal.view.IInputMethodSession;
import com.android.internal.view.InputConnectionWrapper;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Binder;
import android.os.IBinder;
import android.os.Message;
import android.os.RemoteException;
import android.os.ResultReceiver;
import android.util.Log;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputBinding;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethod;
import android.view.inputmethod.InputMethodSession;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* Implements the internal IInputMethod interface to convert incoming calls
* on to it back to calls on the public InputMethod interface, scheduling
* them on the main thread of the process.
*/
class IInputMethodWrapper extends IInputMethod.Stub
implements HandlerCaller.Callback {
private static final String TAG = "InputMethodWrapper";
private static final boolean DEBUG = false;
private static final int DO_DUMP = 1;
private static final int DO_ATTACH_TOKEN = 10;
private static final int DO_SET_INPUT_CONTEXT = 20;
private static final int DO_UNSET_INPUT_CONTEXT = 30;
private static final int DO_START_INPUT = 32;
private static final int DO_RESTART_INPUT = 34;
private static final int DO_CREATE_SESSION = 40;
private static final int DO_SET_SESSION_ENABLED = 45;
private static final int DO_REVOKE_SESSION = 50;
private static final int DO_SHOW_SOFT_INPUT = 60;
private static final int DO_HIDE_SOFT_INPUT = 70;
final AbstractInputMethodService mTarget;
final HandlerCaller mCaller;
final InputMethod mInputMethod;
static class Notifier {
boolean notified;
}
// NOTE: we should have a cache of these.
static class InputMethodSessionCallbackWrapper implements InputMethod.SessionCallback {
final Context mContext;
final IInputMethodCallback mCb;
InputMethodSessionCallbackWrapper(Context context, IInputMethodCallback cb) {
mContext = context;
mCb = cb;
}
public void sessionCreated(InputMethodSession session) {
try {
if (session != null) {
IInputMethodSessionWrapper wrap =
new IInputMethodSessionWrapper(mContext, session);
mCb.sessionCreated(wrap);
} else {
mCb.sessionCreated(null);
}
} catch (RemoteException e) {
}
}
}
public IInputMethodWrapper(AbstractInputMethodService context,
InputMethod inputMethod) {
mTarget = context;
mCaller = new HandlerCaller(context, this);
mInputMethod = inputMethod;
}
public InputMethod getInternalInputMethod() {
return mInputMethod;
}
public void executeMessage(Message msg) {
switch (msg.what) {
case DO_DUMP: {
HandlerCaller.SomeArgs args = (HandlerCaller.SomeArgs)msg.obj;
try {
mTarget.dump((FileDescriptor)args.arg1,
(PrintWriter)args.arg2, (String[])args.arg3);
} catch (RuntimeException e) {
((PrintWriter)args.arg2).println("Exception: " + e);
}
synchronized (args.arg4) {
((CountDownLatch)args.arg4).countDown();
}
return;
}
case DO_ATTACH_TOKEN: {
mInputMethod.attachToken((IBinder)msg.obj);
return;
}
case DO_SET_INPUT_CONTEXT: {
mInputMethod.bindInput((InputBinding)msg.obj);
return;
}
case DO_UNSET_INPUT_CONTEXT:
mInputMethod.unbindInput();
return;
case DO_START_INPUT: {
HandlerCaller.SomeArgs args = (HandlerCaller.SomeArgs)msg.obj;
IInputContext inputContext = (IInputContext)args.arg1;
InputConnection ic = inputContext != null
? new InputConnectionWrapper(inputContext) : null;
mInputMethod.startInput(ic, (EditorInfo)args.arg2);
return;
}
case DO_RESTART_INPUT: {
HandlerCaller.SomeArgs args = (HandlerCaller.SomeArgs)msg.obj;
IInputContext inputContext = (IInputContext)args.arg1;
InputConnection ic = inputContext != null
? new InputConnectionWrapper(inputContext) : null;
mInputMethod.restartInput(ic, (EditorInfo)args.arg2);
return;
}
case DO_CREATE_SESSION: {
mInputMethod.createSession(new InputMethodSessionCallbackWrapper(
mCaller.mContext, (IInputMethodCallback)msg.obj));
return;
}
case DO_SET_SESSION_ENABLED:
mInputMethod.setSessionEnabled((InputMethodSession)msg.obj,
msg.arg1 != 0);
return;
case DO_REVOKE_SESSION:
mInputMethod.revokeSession((InputMethodSession)msg.obj);
return;
case DO_SHOW_SOFT_INPUT:
mInputMethod.showSoftInput(msg.arg1, (ResultReceiver)msg.obj);
return;
case DO_HIDE_SOFT_INPUT:
mInputMethod.hideSoftInput(msg.arg1, (ResultReceiver)msg.obj);
return;
}
Log.w(TAG, "Unhandled message code: " + msg.what);
}
@Override protected void dump(FileDescriptor fd, PrintWriter fout, String[] args) {
if (mTarget.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
!= PackageManager.PERMISSION_GRANTED) {
fout.println("Permission Denial: can't dump InputMethodManager from from pid="
+ Binder.getCallingPid()
+ ", uid=" + Binder.getCallingUid());
return;
}
CountDownLatch latch = new CountDownLatch(1);
mCaller.executeOrSendMessage(mCaller.obtainMessageOOOO(DO_DUMP,
fd, fout, args, latch));
try {
if (!latch.await(5, TimeUnit.SECONDS)) {
fout.println("Timeout waiting for dump");
}
} catch (InterruptedException e) {
fout.println("Interrupted waiting for dump");
}
}
public void attachToken(IBinder token) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_ATTACH_TOKEN, token));
}
public void bindInput(InputBinding binding) {
InputConnection ic = new InputConnectionWrapper(
IInputContext.Stub.asInterface(binding.getConnectionToken()));
InputBinding nu = new InputBinding(ic, binding);
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_SET_INPUT_CONTEXT, nu));
}
public void unbindInput() {
mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_UNSET_INPUT_CONTEXT));
}
public void startInput(IInputContext inputContext, EditorInfo attribute) {
mCaller.executeOrSendMessage(mCaller.obtainMessageOO(DO_START_INPUT,
inputContext, attribute));
}
public void restartInput(IInputContext inputContext, EditorInfo attribute) {
mCaller.executeOrSendMessage(mCaller.obtainMessageOO(DO_RESTART_INPUT,
inputContext, attribute));
}
public void createSession(IInputMethodCallback callback) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_CREATE_SESSION, callback));
}
public void setSessionEnabled(IInputMethodSession session, boolean enabled) {
try {
InputMethodSession ls = ((IInputMethodSessionWrapper)
session).getInternalInputMethodSession();
mCaller.executeOrSendMessage(mCaller.obtainMessageIO(
DO_SET_SESSION_ENABLED, enabled ? 1 : 0, ls));
} catch (ClassCastException e) {
Log.w(TAG, "Incoming session not of correct type: " + session, e);
}
}
public void revokeSession(IInputMethodSession session) {
try {
InputMethodSession ls = ((IInputMethodSessionWrapper)
session).getInternalInputMethodSession();
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_REVOKE_SESSION, ls));
} catch (ClassCastException e) {
Log.w(TAG, "Incoming session not of correct type: " + session, e);
}
}
public void showSoftInput(int flags, ResultReceiver resultReceiver) {
mCaller.executeOrSendMessage(mCaller.obtainMessageIO(DO_SHOW_SOFT_INPUT,
flags, resultReceiver));
}
public void hideSoftInput(int flags, ResultReceiver resultReceiver) {
mCaller.executeOrSendMessage(mCaller.obtainMessageIO(DO_HIDE_SOFT_INPUT,
flags, resultReceiver));
}
}
|
