| /* |
| * 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.media.AudioAttributes; |
| import android.os.Binder; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| 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> attribute 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, int surfaceRotation) { |
| try { |
| return mIm.getTouchCalibrationForInputDevice(inputDeviceDescriptor, surfaceRotation); |
| } 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, int surfaceRotation, |
| TouchCalibration calibration) { |
| try { |
| mIm.setTouchCalibrationForInputDevice(inputDeviceDescriptor, surfaceRotation, 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; |
| } |
| |
| /** |
| * @hide |
| */ |
| @Override |
| public void vibrate(int uid, String opPkg, long milliseconds, AudioAttributes attributes) { |
| vibrate(new long[] { 0, milliseconds}, -1); |
| } |
| |
| /** |
| * @hide |
| */ |
| @Override |
| public void vibrate(int uid, String opPkg, long[] pattern, int repeat, |
| AudioAttributes attributes) { |
| if (repeat >= pattern.length) { |
| throw new ArrayIndexOutOfBoundsException(); |
| } |
| try { |
| mIm.vibrate(mDeviceId, pattern, repeat, mToken); |
| } catch (RemoteException ex) { |
| Log.w(TAG, "Failed to vibrate.", ex); |
| } |
| } |
| |
| @Override |
| public void cancel() { |
| try { |
| mIm.cancelVibrate(mDeviceId, mToken); |
| } catch (RemoteException ex) { |
| Log.w(TAG, "Failed to cancel vibration.", ex); |
| } |
| } |
| } |
| } |