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
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
|
/*
* Copyright (C) 2012 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.hardware.input;
import com.android.internal.util.ArrayUtils;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.content.Context;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.Vibrator;
import android.provider.Settings;
import android.provider.Settings.SettingNotFoundException;
import android.util.Log;
import android.util.SparseArray;
import android.view.InputDevice;
import android.view.InputEvent;
import java.util.ArrayList;
/**
* Provides information about input devices and available key layouts.
* <p>
* Get an instance of this class by calling
* {@link android.content.Context#getSystemService(java.lang.String)
* Context.getSystemService()} with the argument
* {@link android.content.Context#INPUT_SERVICE}.
* </p>
*/
public final class InputManager {
private static final String TAG = "InputManager";
private static final boolean DEBUG = false;
private static final int MSG_DEVICE_ADDED = 1;
private static final int MSG_DEVICE_REMOVED = 2;
private static final int MSG_DEVICE_CHANGED = 3;
private static InputManager sInstance;
private final IInputManager mIm;
// Guarded by mInputDevicesLock
private final Object mInputDevicesLock = new Object();
private SparseArray<InputDevice> mInputDevices;
private InputDevicesChangedListener mInputDevicesChangedListener;
private final ArrayList<InputDeviceListenerDelegate> mInputDeviceListeners =
new ArrayList<InputDeviceListenerDelegate>();
/**
* Broadcast Action: Query available keyboard layouts.
* <p>
* The input manager service locates available keyboard layouts
* by querying broadcast receivers that are registered for this action.
* An application can offer additional keyboard layouts to the user
* by declaring a suitable broadcast receiver in its manifest.
* </p><p>
* Here is an example broadcast receiver declaration that an application
* might include in its AndroidManifest.xml to advertise keyboard layouts.
* The meta-data specifies a resource that contains a description of each keyboard
* layout that is provided by the application.
* <pre><code>
* <receiver android:name=".InputDeviceReceiver"
* android:label="@string/keyboard_layouts_label">
* <intent-filter>
* <action android:name="android.hardware.input.action.QUERY_KEYBOARD_LAYOUTS" />
* </intent-filter>
* <meta-data android:name="android.hardware.input.metadata.KEYBOARD_LAYOUTS"
* android:resource="@xml/keyboard_layouts" />
* </receiver>
* </code></pre>
* </p><p>
* In the above example, the <code>@xml/keyboard_layouts</code> resource refers to
* an XML resource whose root element is <code><keyboard-layouts></code> that
* contains zero or more <code><keyboard-layout></code> elements.
* Each <code><keyboard-layout></code> element specifies the name, label, and location
* of a key character map for a particular keyboard layout. The label on the receiver
* is used to name the collection of keyboard layouts provided by this receiver in the
* keyboard layout settings.
* <pre></code>
* <?xml version="1.0" encoding="utf-8"?>
* <keyboard-layouts xmlns:android="http://schemas.android.com/apk/res/android">
* <keyboard-layout android:name="keyboard_layout_english_us"
* android:label="@string/keyboard_layout_english_us_label"
* android:keyboardLayout="@raw/keyboard_layout_english_us" />
* </keyboard-layouts>
* </p><p>
* The <code>android:name</code> attribute specifies an identifier by which
* the keyboard layout will be known in the package.
* The <code>android:label</code> attributes specifies a human-readable descriptive
* label to describe the keyboard layout in the user interface, such as "English (US)".
* The <code>android:keyboardLayout</code> attribute refers to a
* <a href="http://source.android.com/tech/input/key-character-map-files.html">
* key character map</a> resource that defines the keyboard layout.
* </p>
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_QUERY_KEYBOARD_LAYOUTS =
"android.hardware.input.action.QUERY_KEYBOARD_LAYOUTS";
/**
* Metadata Key: Keyboard layout metadata associated with
* {@link #ACTION_QUERY_KEYBOARD_LAYOUTS}.
* <p>
* Specifies the resource id of a XML resource that describes the keyboard
* layouts that are provided by the application.
* </p>
*/
public static final String META_DATA_KEYBOARD_LAYOUTS =
"android.hardware.input.metadata.KEYBOARD_LAYOUTS";
/**
* Pointer Speed: The minimum (slowest) pointer speed (-7).
* @hide
*/
public static final int MIN_POINTER_SPEED = -7;
/**
* Pointer Speed: The maximum (fastest) pointer speed (7).
* @hide
*/
public static final int MAX_POINTER_SPEED = 7;
/**
* Pointer Speed: The default pointer speed (0).
* @hide
*/
public static final int DEFAULT_POINTER_SPEED = 0;
/**
* Input Event Injection Synchronization Mode: None.
* Never blocks. Injection is asynchronous and is assumed always to be successful.
* @hide
*/
public static final int INJECT_INPUT_EVENT_MODE_ASYNC = 0; // see InputDispatcher.h
/**
* Input Event Injection Synchronization Mode: Wait for result.
* Waits for previous events to be dispatched so that the input dispatcher can
* determine whether input event injection will be permitted based on the current
* input focus. Does not wait for the input event to finish being handled
* by the application.
* @hide
*/
public static final int INJECT_INPUT_EVENT_MODE_WAIT_FOR_RESULT = 1; // see InputDispatcher.h
/**
* Input Event Injection Synchronization Mode: Wait for finish.
* Waits for the event to be delivered to the application and handled.
* @hide
*/
public static final int INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH = 2; // see InputDispatcher.h
private InputManager(IInputManager im) {
mIm = im;
}
/**
* Gets an instance of the input manager.
*
* @return The input manager instance.
*
* @hide
*/
public static InputManager getInstance() {
synchronized (InputManager.class) {
if (sInstance == null) {
IBinder b = ServiceManager.getService(Context.INPUT_SERVICE);
sInstance = new InputManager(IInputManager.Stub.asInterface(b));
}
return sInstance;
}
}
/**
* Gets information about the input device with the specified id.
* @param id The device id.
* @return The input device or null if not found.
*/
public InputDevice getInputDevice(int id) {
synchronized (mInputDevicesLock) {
populateInputDevicesLocked();
int index = mInputDevices.indexOfKey(id);
if (index < 0) {
return null;
}
InputDevice inputDevice = mInputDevices.valueAt(index);
if (inputDevice == null) {
try {
inputDevice = mIm.getInputDevice(id);
} catch (RemoteException ex) {
throw new RuntimeException("Could not get input device information.", ex);
}
if (inputDevice != null) {
mInputDevices.setValueAt(index, inputDevice);
}
}
return inputDevice;
}
}
/**
* Gets information about the input device with the specified descriptor.
* @param descriptor The input device descriptor.
* @return The input device or null if not found.
* @hide
*/
public InputDevice getInputDeviceByDescriptor(String descriptor) {
if (descriptor == null) {
throw new IllegalArgumentException("descriptor must not be null.");
}
synchronized (mInputDevicesLock) {
populateInputDevicesLocked();
int numDevices = mInputDevices.size();
for (int i = 0; i < numDevices; i++) {
InputDevice inputDevice = mInputDevices.valueAt(i);
if (inputDevice == null) {
int id = mInputDevices.keyAt(i);
try {
inputDevice = mIm.getInputDevice(id);
} catch (RemoteException ex) {
// Ignore the problem for the purposes of this method.
}
if (inputDevice == null) {
continue;
}
mInputDevices.setValueAt(i, inputDevice);
}
if (descriptor.equals(inputDevice.getDescriptor())) {
return inputDevice;
}
}
return null;
}
}
/**
* Gets the ids of all input devices in the system.
* @return The input device ids.
*/
public int[] getInputDeviceIds() {
synchronized (mInputDevicesLock) {
populateInputDevicesLocked();
final int count = mInputDevices.size();
final int[] ids = new int[count];
for (int i = 0; i < count; i++) {
ids[i] = mInputDevices.keyAt(i);
}
return ids;
}
}
/**
* Registers an input device listener to receive notifications about when
* input devices are added, removed or changed.
*
* @param listener The listener to register.
* @param handler The handler on which the listener should be invoked, or null
* if the listener should be invoked on the calling thread's looper.
*
* @see #unregisterInputDeviceListener
*/
public void registerInputDeviceListener(InputDeviceListener listener, Handler handler) {
if (listener == null) {
throw new IllegalArgumentException("listener must not be null");
}
synchronized (mInputDevicesLock) {
int index = findInputDeviceListenerLocked(listener);
if (index < 0) {
mInputDeviceListeners.add(new InputDeviceListenerDelegate(listener, handler));
}
}
}
/**
* Unregisters an input device listener.
*
* @param listener The listener to unregister.
*
* @see #registerInputDeviceListener
*/
public void unregisterInputDeviceListener(InputDeviceListener listener) {
if (listener == null) {
throw new IllegalArgumentException("listener must not be null");
}
synchronized (mInputDevicesLock) {
int index = findInputDeviceListenerLocked(listener);
if (index >= 0) {
InputDeviceListenerDelegate d = mInputDeviceListeners.get(index);
d.removeCallbacksAndMessages(null);
mInputDeviceListeners.remove(index);
}
}
}
private int findInputDeviceListenerLocked(InputDeviceListener listener) {
final int numListeners = mInputDeviceListeners.size();
for (int i = 0; i < numListeners; i++) {
if (mInputDeviceListeners.get(i).mListener == listener) {
return i;
}
}
return -1;
}
/**
* Gets information about all supported keyboard layouts.
* <p>
* The input manager consults the built-in keyboard layouts as well
* as all keyboard layouts advertised by applications using a
* {@link #ACTION_QUERY_KEYBOARD_LAYOUTS} broadcast receiver.
* </p>
*
* @return A list of all supported keyboard layouts.
*
* @hide
*/
public KeyboardLayout[] getKeyboardLayouts() {
try {
return mIm.getKeyboardLayouts();
} catch (RemoteException ex) {
Log.w(TAG, "Could not get list of keyboard layout informations.", ex);
return new KeyboardLayout[0];
}
}
/**
* Gets the keyboard layout with the specified descriptor.
*
* @param keyboardLayoutDescriptor The keyboard layout descriptor, as returned by
* {@link KeyboardLayout#getDescriptor()}.
* @return The keyboard layout, or null if it could not be loaded.
*
* @hide
*/
public KeyboardLayout getKeyboardLayout(String keyboardLayoutDescriptor) {
if (keyboardLayoutDescriptor == null) {
throw new IllegalArgumentException("keyboardLayoutDescriptor must not be null");
}
try {
return mIm.getKeyboardLayout(keyboardLayoutDescriptor);
} catch (RemoteException ex) {
Log.w(TAG, "Could not get keyboard layout information.", ex);
return null;
}
}
/**
* Gets the current keyboard layout descriptor for the specified input
* device.
*
* @param identifier Identifier for the input device
* @return The keyboard layout descriptor, or null if no keyboard layout has
* been set.
* @hide
*/
public String getCurrentKeyboardLayoutForInputDevice(InputDeviceIdentifier identifier) {
try {
return mIm.getCurrentKeyboardLayoutForInputDevice(identifier);
} catch (RemoteException ex) {
Log.w(TAG, "Could not get current keyboard layout for input device.", ex);
return null;
}
}
/**
* Sets the current keyboard layout descriptor for the specified input
* device.
* <p>
* This method may have the side-effect of causing the input device in
* question to be reconfigured.
* </p>
*
* @param identifier The identifier for the input device.
* @param keyboardLayoutDescriptor The keyboard layout descriptor to use,
* must not be null.
* @hide
*/
public void setCurrentKeyboardLayoutForInputDevice(InputDeviceIdentifier identifier,
String keyboardLayoutDescriptor) {
if (identifier == null) {
throw new IllegalArgumentException("identifier must not be null");
}
if (keyboardLayoutDescriptor == null) {
throw new IllegalArgumentException("keyboardLayoutDescriptor must not be null");
}
try {
mIm.setCurrentKeyboardLayoutForInputDevice(identifier,
keyboardLayoutDescriptor);
} catch (RemoteException ex) {
Log.w(TAG, "Could not set current keyboard layout for input device.", ex);
}
}
/**
* Gets all keyboard layout descriptors that are enabled for the specified
* input device.
*
* @param identifier The identifier for the input device.
* @return The keyboard layout descriptors.
* @hide
*/
public String[] getKeyboardLayoutsForInputDevice(InputDeviceIdentifier identifier) {
if (identifier == null) {
throw new IllegalArgumentException("inputDeviceDescriptor must not be null");
}
try {
return mIm.getKeyboardLayoutsForInputDevice(identifier);
} catch (RemoteException ex) {
Log.w(TAG, "Could not get keyboard layouts for input device.", ex);
return ArrayUtils.emptyArray(String.class);
}
}
/**
* Adds the keyboard layout descriptor for the specified input device.
* <p>
* This method may have the side-effect of causing the input device in
* question to be reconfigured.
* </p>
*
* @param identifier The identifier for the input device.
* @param keyboardLayoutDescriptor The descriptor of the keyboard layout to
* add.
* @hide
*/
public void addKeyboardLayoutForInputDevice(InputDeviceIdentifier identifier,
String keyboardLayoutDescriptor) {
if (identifier == null) {
throw new IllegalArgumentException("inputDeviceDescriptor must not be null");
}
if (keyboardLayoutDescriptor == null) {
throw new IllegalArgumentException("keyboardLayoutDescriptor must not be null");
}
try {
mIm.addKeyboardLayoutForInputDevice(identifier, keyboardLayoutDescriptor);
} catch (RemoteException ex) {
Log.w(TAG, "Could not add keyboard layout for input device.", ex);
}
}
/**
* Removes the keyboard layout descriptor for the specified input device.
* <p>
* This method may have the side-effect of causing the input device in
* question to be reconfigured.
* </p>
*
* @param identifier The identifier for the input device.
* @param keyboardLayoutDescriptor The descriptor of the keyboard layout to
* remove.
* @hide
*/
public void removeKeyboardLayoutForInputDevice(InputDeviceIdentifier identifier,
String keyboardLayoutDescriptor) {
if (identifier == null) {
throw new IllegalArgumentException("inputDeviceDescriptor must not be null");
}
if (keyboardLayoutDescriptor == null) {
throw new IllegalArgumentException("keyboardLayoutDescriptor must not be null");
}
try {
mIm.removeKeyboardLayoutForInputDevice(identifier, keyboardLayoutDescriptor);
} catch (RemoteException ex) {
Log.w(TAG, "Could not remove keyboard layout for input device.", ex);
}
}
/**
* Gets the TouchCalibration applied to the specified input device's coordinates.
*
* @param inputDeviceDescriptor The input device descriptor.
* @return The TouchCalibration currently assigned for use with the given
* input device. If none is set, an identity TouchCalibration is returned.
*
* @hide
*/
public TouchCalibration getTouchCalibration(String inputDeviceDescriptor) {
try {
return mIm.getTouchCalibrationForInputDevice(inputDeviceDescriptor);
} catch (RemoteException ex) {
Log.w(TAG, "Could not get calibration matrix for input device.", ex);
return TouchCalibration.IDENTITY;
}
}
/**
* Sets the TouchCalibration to apply to the specified input device's coordinates.
* <p>
* This method may have the side-effect of causing the input device in question
* to be reconfigured. Requires {@link android.Manifest.permissions.SET_INPUT_CALIBRATION}.
* </p>
*
* @param inputDeviceDescriptor The input device descriptor.
* @param calibration The calibration to be applied
*
* @hide
*/
public void setTouchCalibration(String inputDeviceDescriptor, TouchCalibration calibration) {
try {
mIm.setTouchCalibrationForInputDevice(inputDeviceDescriptor, calibration);
} catch (RemoteException ex) {
Log.w(TAG, "Could not set calibration matrix for input device.", ex);
}
}
/**
* Gets the mouse pointer speed.
* <p>
* Only returns the permanent mouse pointer speed. Ignores any temporary pointer
* speed set by {@link #tryPointerSpeed}.
* </p>
*
* @param context The application context.
* @return The pointer speed as a value between {@link #MIN_POINTER_SPEED} and
* {@link #MAX_POINTER_SPEED}, or the default value {@link #DEFAULT_POINTER_SPEED}.
*
* @hide
*/
public int getPointerSpeed(Context context) {
int speed = DEFAULT_POINTER_SPEED;
try {
speed = Settings.System.getInt(context.getContentResolver(),
Settings.System.POINTER_SPEED);
} catch (SettingNotFoundException snfe) {
}
return speed;
}
/**
* Sets the mouse pointer speed.
* <p>
* Requires {@link android.Manifest.permissions.WRITE_SETTINGS}.
* </p>
*
* @param context The application context.
* @param speed The pointer speed as a value between {@link #MIN_POINTER_SPEED} and
* {@link #MAX_POINTER_SPEED}, or the default value {@link #DEFAULT_POINTER_SPEED}.
*
* @hide
*/
public void setPointerSpeed(Context context, int speed) {
if (speed < MIN_POINTER_SPEED || speed > MAX_POINTER_SPEED) {
throw new IllegalArgumentException("speed out of range");
}
Settings.System.putInt(context.getContentResolver(),
Settings.System.POINTER_SPEED, speed);
}
/**
* Changes the mouse pointer speed temporarily, but does not save the setting.
* <p>
* Requires {@link android.Manifest.permission.SET_POINTER_SPEED}.
* </p>
*
* @param speed The pointer speed as a value between {@link #MIN_POINTER_SPEED} and
* {@link #MAX_POINTER_SPEED}, or the default value {@link #DEFAULT_POINTER_SPEED}.
*
* @hide
*/
public void tryPointerSpeed(int speed) {
if (speed < MIN_POINTER_SPEED || speed > MAX_POINTER_SPEED) {
throw new IllegalArgumentException("speed out of range");
}
try {
mIm.tryPointerSpeed(speed);
} catch (RemoteException ex) {
Log.w(TAG, "Could not set temporary pointer speed.", ex);
}
}
/**
* Queries the framework about whether any physical keys exist on the
* any keyboard attached to the device that are capable of producing the given
* array of key codes.
*
* @param keyCodes The array of key codes to query.
* @return A new array of the same size as the key codes array whose elements
* are set to true if at least one attached keyboard supports the corresponding key code
* at the same index in the key codes array.
*
* @hide
*/
public boolean[] deviceHasKeys(int[] keyCodes) {
return deviceHasKeys(-1, keyCodes);
}
/**
* Queries the framework about whether any physical keys exist on the
* any keyboard attached to the device that are capable of producing the given
* array of key codes.
*
* @param id The id of the device to query.
* @param keyCodes The array of key codes to query.
* @return A new array of the same size as the key codes array whose elements are set to true
* if the given device could produce the corresponding key code at the same index in the key
* codes array.
*
* @hide
*/
public boolean[] deviceHasKeys(int id, int[] keyCodes) {
boolean[] ret = new boolean[keyCodes.length];
try {
mIm.hasKeys(id, InputDevice.SOURCE_ANY, keyCodes, ret);
} catch (RemoteException e) {
// no fallback; just return the empty array
}
return ret;
}
/**
* Injects an input event into the event system on behalf of an application.
* The synchronization mode determines whether the method blocks while waiting for
* input injection to proceed.
* <p>
* Requires {@link android.Manifest.permission.INJECT_EVENTS} to inject into
* windows that are owned by other applications.
* </p><p>
* Make sure you correctly set the event time and input source of the event
* before calling this method.
* </p>
*
* @param event The event to inject.
* @param mode The synchronization mode. One of:
* {@link #INJECT_INPUT_EVENT_MODE_ASYNC},
* {@link #INJECT_INPUT_EVENT_MODE_WAIT_FOR_RESULT}, or
* {@link #INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH}.
* @return True if input event injection succeeded.
*
* @hide
*/
public boolean injectInputEvent(InputEvent event, int mode) {
if (event == null) {
throw new IllegalArgumentException("event must not be null");
}
if (mode != INJECT_INPUT_EVENT_MODE_ASYNC
&& mode != INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH
&& mode != INJECT_INPUT_EVENT_MODE_WAIT_FOR_RESULT) {
throw new IllegalArgumentException("mode is invalid");
}
try {
return mIm.injectInputEvent(event, mode);
} catch (RemoteException ex) {
return false;
}
}
private void populateInputDevicesLocked() {
if (mInputDevicesChangedListener == null) {
final InputDevicesChangedListener listener = new InputDevicesChangedListener();
try {
mIm.registerInputDevicesChangedListener(listener);
} catch (RemoteException ex) {
throw new RuntimeException(
"Could not get register input device changed listener", ex);
}
mInputDevicesChangedListener = listener;
}
if (mInputDevices == null) {
final int[] ids;
try {
ids = mIm.getInputDeviceIds();
} catch (RemoteException ex) {
throw new RuntimeException("Could not get input device ids.", ex);
}
mInputDevices = new SparseArray<InputDevice>();
for (int i = 0; i < ids.length; i++) {
mInputDevices.put(ids[i], null);
}
}
}
private void onInputDevicesChanged(int[] deviceIdAndGeneration) {
if (DEBUG) {
Log.d(TAG, "Received input devices changed.");
}
synchronized (mInputDevicesLock) {
for (int i = mInputDevices.size(); --i > 0; ) {
final int deviceId = mInputDevices.keyAt(i);
if (!containsDeviceId(deviceIdAndGeneration, deviceId)) {
if (DEBUG) {
Log.d(TAG, "Device removed: " + deviceId);
}
mInputDevices.removeAt(i);
sendMessageToInputDeviceListenersLocked(MSG_DEVICE_REMOVED, deviceId);
}
}
for (int i = 0; i < deviceIdAndGeneration.length; i += 2) {
final int deviceId = deviceIdAndGeneration[i];
int index = mInputDevices.indexOfKey(deviceId);
if (index >= 0) {
final InputDevice device = mInputDevices.valueAt(index);
if (device != null) {
final int generation = deviceIdAndGeneration[i + 1];
if (device.getGeneration() != generation) {
if (DEBUG) {
Log.d(TAG, "Device changed: " + deviceId);
}
mInputDevices.setValueAt(index, null);
sendMessageToInputDeviceListenersLocked(MSG_DEVICE_CHANGED, deviceId);
}
}
} else {
if (DEBUG) {
Log.d(TAG, "Device added: " + deviceId);
}
mInputDevices.put(deviceId, null);
sendMessageToInputDeviceListenersLocked(MSG_DEVICE_ADDED, deviceId);
}
}
}
}
private void sendMessageToInputDeviceListenersLocked(int what, int deviceId) {
final int numListeners = mInputDeviceListeners.size();
for (int i = 0; i < numListeners; i++) {
InputDeviceListenerDelegate listener = mInputDeviceListeners.get(i);
listener.sendMessage(listener.obtainMessage(what, deviceId, 0));
}
}
private static boolean containsDeviceId(int[] deviceIdAndGeneration, int deviceId) {
for (int i = 0; i < deviceIdAndGeneration.length; i += 2) {
if (deviceIdAndGeneration[i] == deviceId) {
return true;
}
}
return false;
}
/**
* Gets a vibrator service associated with an input device, assuming it has one.
* @return The vibrator, never null.
* @hide
*/
public Vibrator getInputDeviceVibrator(int deviceId) {
return new InputDeviceVibrator(deviceId);
}
/**
* Listens for changes in input devices.
*/
public interface InputDeviceListener {
/**
* Called whenever an input device has been added to the system.
* Use {@link InputManager#getInputDevice} to get more information about the device.
*
* @param deviceId The id of the input device that was added.
*/
void onInputDeviceAdded(int deviceId);
/**
* Called whenever an input device has been removed from the system.
*
* @param deviceId The id of the input device that was removed.
*/
void onInputDeviceRemoved(int deviceId);
/**
* Called whenever the properties of an input device have changed since they
* were last queried. Use {@link InputManager#getInputDevice} to get
* a fresh {@link InputDevice} object with the new properties.
*
* @param deviceId The id of the input device that changed.
*/
void onInputDeviceChanged(int deviceId);
}
private final class InputDevicesChangedListener extends IInputDevicesChangedListener.Stub {
@Override
public void onInputDevicesChanged(int[] deviceIdAndGeneration) throws RemoteException {
InputManager.this.onInputDevicesChanged(deviceIdAndGeneration);
}
}
private static final class InputDeviceListenerDelegate extends Handler {
public final InputDeviceListener mListener;
public InputDeviceListenerDelegate(InputDeviceListener listener, Handler handler) {
super(handler != null ? handler.getLooper() : Looper.myLooper());
mListener = listener;
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_DEVICE_ADDED:
mListener.onInputDeviceAdded(msg.arg1);
break;
case MSG_DEVICE_REMOVED:
mListener.onInputDeviceRemoved(msg.arg1);
break;
case MSG_DEVICE_CHANGED:
mListener.onInputDeviceChanged(msg.arg1);
break;
}
}
}
private final class InputDeviceVibrator extends Vibrator {
private final int mDeviceId;
private final Binder mToken;
public InputDeviceVibrator(int deviceId) {
mDeviceId = deviceId;
mToken = new Binder();
}
@Override
public boolean hasVibrator() {
return true;
}
@Override
public void vibrate(long milliseconds) {
vibrate(new long[] { 0, milliseconds}, -1);
}
@Override
public void vibrate(long[] pattern, int repeat) {
if (repeat >= pattern.length) {
throw new ArrayIndexOutOfBoundsException();
}
try {
mIm.vibrate(mDeviceId, pattern, repeat, mToken);
} catch (RemoteException ex) {
Log.w(TAG, "Failed to vibrate.", ex);
}
}
/**
* @hide
*/
@Override
public void vibrate(int owningUid, String owningPackage, long milliseconds) {
vibrate(milliseconds);
}
/**
* @hide
*/
@Override
public void vibrate(int owningUid, String owningPackage, long[] pattern, int repeat) {
vibrate(pattern, repeat);
}
@Override
public void cancel() {
try {
mIm.cancelVibrate(mDeviceId, mToken);
} catch (RemoteException ex) {
Log.w(TAG, "Failed to cancel vibration.", ex);
}
}
}
}
|