Refactor input system into its own service.
Extracted the input system from the window manager service into
a new input manager service. This will make it easier to
offer new input-related features to applications.
Cleaned up the input manager service JNI layer somewhat to get rid
of all of the unnecessary checks for whether the input manager
had been initialized. Simplified the callback layer as well.
Change-Id: I3175d01307aed1420780d3c093d2694b41edf66e
diff --git a/services/java/com/android/server/input/InputManagerService.java b/services/java/com/android/server/input/InputManagerService.java
new file mode 100644
index 0000000..6a566ae
--- /dev/null
+++ b/services/java/com/android/server/input/InputManagerService.java
@@ -0,0 +1,712 @@
+/*
+ * Copyright (C) 2010 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.input;
+
+import com.android.internal.util.XmlUtils;
+import com.android.server.Watchdog;
+import com.android.server.input.InputFilter.Host;
+import com.android.server.wm.WindowManagerService;
+
+import org.xmlpull.v1.XmlPullParser;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.content.res.Configuration;
+import android.database.ContentObserver;
+import android.hardware.input.IInputManager;
+import android.os.Binder;
+import android.os.Environment;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.MessageQueue;
+import android.os.SystemProperties;
+import android.provider.Settings;
+import android.provider.Settings.SettingNotFoundException;
+import android.util.Slog;
+import android.util.Xml;
+import android.view.InputChannel;
+import android.view.InputDevice;
+import android.view.InputEvent;
+import android.view.KeyEvent;
+import android.view.PointerIcon;
+import android.view.Surface;
+import android.view.ViewConfiguration;
+import android.view.WindowManager;
+import android.view.WindowManagerPolicy;
+
+import java.io.File;
+import java.io.FileDescriptor;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+
+/*
+ * Wraps the C++ InputManager and provides its callbacks.
+ */
+public class InputManagerService extends IInputManager.Stub implements Watchdog.Monitor {
+ static final String TAG = "InputManager";
+ static final boolean DEBUG = false;
+
+ private static final String EXCLUDED_DEVICES_PATH = "etc/excluded-input-devices.xml";
+
+ // Pointer to native input manager service object.
+ private final int mPtr;
+
+ private final Context mContext;
+ private final Callbacks mCallbacks;
+ private final Handler mHandler;
+
+ private static native int nativeInit(InputManagerService service,
+ Context context, MessageQueue messageQueue);
+ private static native void nativeStart(int ptr);
+ private static native void nativeSetDisplaySize(int ptr, int displayId,
+ int width, int height, int externalWidth, int externalHeight);
+ private static native void nativeSetDisplayOrientation(int ptr, int displayId, int rotation);
+
+ private static native int nativeGetScanCodeState(int ptr,
+ int deviceId, int sourceMask, int scanCode);
+ private static native int nativeGetKeyCodeState(int ptr,
+ int deviceId, int sourceMask, int keyCode);
+ private static native int nativeGetSwitchState(int ptr,
+ int deviceId, int sourceMask, int sw);
+ private static native boolean nativeHasKeys(int ptr,
+ int deviceId, int sourceMask, int[] keyCodes, boolean[] keyExists);
+ private static native void nativeRegisterInputChannel(int ptr, InputChannel inputChannel,
+ InputWindowHandle inputWindowHandle, boolean monitor);
+ private static native void nativeUnregisterInputChannel(int ptr, InputChannel inputChannel);
+ private static native void nativeSetInputFilterEnabled(int ptr, boolean enable);
+ private static native int nativeInjectInputEvent(int ptr, InputEvent event,
+ int injectorPid, int injectorUid, int syncMode, int timeoutMillis,
+ int policyFlags);
+ private static native void nativeSetInputWindows(int ptr, InputWindowHandle[] windowHandles);
+ private static native void nativeSetInputDispatchMode(int ptr, boolean enabled, boolean frozen);
+ private static native void nativeSetSystemUiVisibility(int ptr, int visibility);
+ private static native void nativeSetFocusedApplication(int ptr,
+ InputApplicationHandle application);
+ private static native InputDevice nativeGetInputDevice(int ptr, int deviceId);
+ private static native void nativeGetInputConfiguration(int ptr, Configuration configuration);
+ private static native int[] nativeGetInputDeviceIds(int ptr);
+ private static native boolean nativeTransferTouchFocus(int ptr,
+ InputChannel fromChannel, InputChannel toChannel);
+ private static native void nativeSetPointerSpeed(int ptr, int speed);
+ private static native void nativeSetShowTouches(int ptr, boolean enabled);
+ private static native String nativeDump(int ptr);
+ private static native void nativeMonitor(int ptr);
+
+ // Input event injection constants defined in InputDispatcher.h.
+ public static final int INPUT_EVENT_INJECTION_SUCCEEDED = 0;
+ public static final int INPUT_EVENT_INJECTION_PERMISSION_DENIED = 1;
+ public static final int INPUT_EVENT_INJECTION_FAILED = 2;
+ public static final int INPUT_EVENT_INJECTION_TIMED_OUT = 3;
+
+ // Input event injection synchronization modes defined in InputDispatcher.h
+ public static final int INPUT_EVENT_INJECTION_SYNC_NONE = 0;
+ public static final int INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_RESULT = 1;
+ public static final int INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISH = 2;
+
+ // Key states (may be returned by queries about the current state of a
+ // particular key code, scan code or switch).
+
+ /** The key state is unknown or the requested key itself is not supported. */
+ public static final int KEY_STATE_UNKNOWN = -1;
+
+ /** The key is up. /*/
+ public static final int KEY_STATE_UP = 0;
+
+ /** The key is down. */
+ public static final int KEY_STATE_DOWN = 1;
+
+ /** The key is down but is a virtual key press that is being emulated by the system. */
+ public static final int KEY_STATE_VIRTUAL = 2;
+
+ // State for the currently installed input filter.
+ final Object mInputFilterLock = new Object();
+ InputFilter mInputFilter;
+ InputFilterHost mInputFilterHost;
+
+ public InputManagerService(Context context, Callbacks callbacks) {
+ this.mContext = context;
+ this.mCallbacks = callbacks;
+ this.mHandler = new Handler();
+
+ Slog.i(TAG, "Initializing input manager");
+ mPtr = nativeInit(this, mContext, mHandler.getLooper().getQueue());
+ }
+
+ public void start() {
+ Slog.i(TAG, "Starting input manager");
+ nativeStart(mPtr);
+
+ // Add ourself to the Watchdog monitors.
+ Watchdog.getInstance().addMonitor(this);
+
+ registerPointerSpeedSettingObserver();
+ registerShowTouchesSettingObserver();
+
+ updatePointerSpeedFromSettings();
+ updateShowTouchesFromSettings();
+ }
+
+ public void setDisplaySize(int displayId, int width, int height,
+ int externalWidth, int externalHeight) {
+ if (width <= 0 || height <= 0 || externalWidth <= 0 || externalHeight <= 0) {
+ throw new IllegalArgumentException("Invalid display id or dimensions.");
+ }
+
+ if (DEBUG) {
+ Slog.d(TAG, "Setting display #" + displayId + " size to " + width + "x" + height
+ + " external size " + externalWidth + "x" + externalHeight);
+ }
+ nativeSetDisplaySize(mPtr, displayId, width, height, externalWidth, externalHeight);
+ }
+
+ public void setDisplayOrientation(int displayId, int rotation) {
+ if (rotation < Surface.ROTATION_0 || rotation > Surface.ROTATION_270) {
+ throw new IllegalArgumentException("Invalid rotation.");
+ }
+
+ if (DEBUG) {
+ Slog.d(TAG, "Setting display #" + displayId + " orientation to " + rotation);
+ }
+ nativeSetDisplayOrientation(mPtr, displayId, rotation);
+ }
+
+ public void getInputConfiguration(Configuration config) {
+ if (config == null) {
+ throw new IllegalArgumentException("config must not be null.");
+ }
+
+ nativeGetInputConfiguration(mPtr, config);
+ }
+
+ /**
+ * Gets the current state of a key or button by key code.
+ * @param deviceId The input device id, or -1 to consult all devices.
+ * @param sourceMask The input sources to consult, or {@link InputDevice#SOURCE_ANY} to
+ * consider all input sources. An input device is consulted if at least one of its
+ * non-class input source bits matches the specified source mask.
+ * @param keyCode The key code to check.
+ * @return The key state.
+ */
+ public int getKeyCodeState(int deviceId, int sourceMask, int keyCode) {
+ return nativeGetKeyCodeState(mPtr, deviceId, sourceMask, keyCode);
+ }
+
+ /**
+ * Gets the current state of a key or button by scan code.
+ * @param deviceId The input device id, or -1 to consult all devices.
+ * @param sourceMask The input sources to consult, or {@link InputDevice#SOURCE_ANY} to
+ * consider all input sources. An input device is consulted if at least one of its
+ * non-class input source bits matches the specified source mask.
+ * @param scanCode The scan code to check.
+ * @return The key state.
+ */
+ public int getScanCodeState(int deviceId, int sourceMask, int scanCode) {
+ return nativeGetScanCodeState(mPtr, deviceId, sourceMask, scanCode);
+ }
+
+ /**
+ * Gets the current state of a switch by switch code.
+ * @param deviceId The input device id, or -1 to consult all devices.
+ * @param sourceMask The input sources to consult, or {@link InputDevice#SOURCE_ANY} to
+ * consider all input sources. An input device is consulted if at least one of its
+ * non-class input source bits matches the specified source mask.
+ * @param switchCode The switch code to check.
+ * @return The switch state.
+ */
+ public int getSwitchState(int deviceId, int sourceMask, int switchCode) {
+ return nativeGetSwitchState(mPtr, deviceId, sourceMask, switchCode);
+ }
+
+ /**
+ * Determines whether the specified key codes are supported by a particular device.
+ * @param deviceId The input device id, or -1 to consult all devices.
+ * @param sourceMask The input sources to consult, or {@link InputDevice#SOURCE_ANY} to
+ * consider all input sources. An input device is consulted if at least one of its
+ * non-class input source bits matches the specified source mask.
+ * @param keyCodes The array of key codes to check.
+ * @param keyExists An array at least as large as keyCodes whose entries will be set
+ * to true or false based on the presence or absence of support for the corresponding
+ * key codes.
+ * @return True if the lookup was successful, false otherwise.
+ */
+ public boolean hasKeys(int deviceId, int sourceMask, int[] keyCodes, boolean[] keyExists) {
+ if (keyCodes == null) {
+ throw new IllegalArgumentException("keyCodes must not be null.");
+ }
+ if (keyExists == null || keyExists.length < keyCodes.length) {
+ throw new IllegalArgumentException("keyExists must not be null and must be at "
+ + "least as large as keyCodes.");
+ }
+
+ return nativeHasKeys(mPtr, deviceId, sourceMask, keyCodes, keyExists);
+ }
+
+ /**
+ * Creates an input channel that will receive all input from the input dispatcher.
+ * @param inputChannelName The input channel name.
+ * @return The input channel.
+ */
+ public InputChannel monitorInput(String inputChannelName) {
+ if (inputChannelName == null) {
+ throw new IllegalArgumentException("inputChannelName must not be null.");
+ }
+
+ InputChannel[] inputChannels = InputChannel.openInputChannelPair(inputChannelName);
+ nativeRegisterInputChannel(mPtr, inputChannels[0], null, true);
+ inputChannels[0].dispose(); // don't need to retain the Java object reference
+ return inputChannels[1];
+ }
+
+ /**
+ * Registers an input channel so that it can be used as an input event target.
+ * @param inputChannel The input channel to register.
+ * @param inputWindowHandle The handle of the input window associated with the
+ * input channel, or null if none.
+ */
+ public void registerInputChannel(InputChannel inputChannel,
+ InputWindowHandle inputWindowHandle) {
+ if (inputChannel == null) {
+ throw new IllegalArgumentException("inputChannel must not be null.");
+ }
+
+ nativeRegisterInputChannel(mPtr, inputChannel, inputWindowHandle, false);
+ }
+
+ /**
+ * Unregisters an input channel.
+ * @param inputChannel The input channel to unregister.
+ */
+ public void unregisterInputChannel(InputChannel inputChannel) {
+ if (inputChannel == null) {
+ throw new IllegalArgumentException("inputChannel must not be null.");
+ }
+
+ nativeUnregisterInputChannel(mPtr, inputChannel);
+ }
+
+ /**
+ * Sets an input filter that will receive all input events before they are dispatched.
+ * The input filter may then reinterpret input events or inject new ones.
+ *
+ * To ensure consistency, the input dispatcher automatically drops all events
+ * in progress whenever an input filter is installed or uninstalled. After an input
+ * filter is uninstalled, it can no longer send input events unless it is reinstalled.
+ * Any events it attempts to send after it has been uninstalled will be dropped.
+ *
+ * @param filter The input filter, or null to remove the current filter.
+ */
+ public void setInputFilter(InputFilter filter) {
+ synchronized (mInputFilterLock) {
+ final InputFilter oldFilter = mInputFilter;
+ if (oldFilter == filter) {
+ return; // nothing to do
+ }
+
+ if (oldFilter != null) {
+ mInputFilter = null;
+ mInputFilterHost.disconnectLocked();
+ mInputFilterHost = null;
+ oldFilter.uninstall();
+ }
+
+ if (filter != null) {
+ mInputFilter = filter;
+ mInputFilterHost = new InputFilterHost();
+ filter.install(mInputFilterHost);
+ }
+
+ nativeSetInputFilterEnabled(mPtr, filter != null);
+ }
+ }
+
+ /**
+ * 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.
+ *
+ * {@link #INPUT_EVENT_INJECTION_SYNC_NONE} never blocks. Injection is asynchronous and
+ * is assumed always to be successful.
+ *
+ * {@link #INPUT_EVENT_INJECTION_SYNC_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 processing.
+ *
+ * {@link #INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISH} waits for the input event to
+ * be completely processed.
+ *
+ * @param event The event to inject.
+ * @param injectorPid The pid of the injecting application.
+ * @param injectorUid The uid of the injecting application.
+ * @param syncMode The synchronization mode.
+ * @param timeoutMillis The injection timeout in milliseconds.
+ * @return One of the INPUT_EVENT_INJECTION_XXX constants.
+ */
+ public int injectInputEvent(InputEvent event, int injectorPid, int injectorUid,
+ int syncMode, int timeoutMillis) {
+ if (event == null) {
+ throw new IllegalArgumentException("event must not be null");
+ }
+ if (injectorPid < 0 || injectorUid < 0) {
+ throw new IllegalArgumentException("injectorPid and injectorUid must not be negative.");
+ }
+ if (timeoutMillis <= 0) {
+ throw new IllegalArgumentException("timeoutMillis must be positive");
+ }
+
+ return nativeInjectInputEvent(mPtr, event, injectorPid, injectorUid, syncMode,
+ timeoutMillis, WindowManagerPolicy.FLAG_DISABLE_KEY_REPEAT);
+ }
+
+ /**
+ * 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 deviceId) {
+ return nativeGetInputDevice(mPtr, deviceId);
+ }
+
+ /**
+ * Gets the ids of all input devices in the system.
+ * @return The input device ids.
+ */
+ public int[] getInputDeviceIds() {
+ return nativeGetInputDeviceIds(mPtr);
+ }
+
+ public void setInputWindows(InputWindowHandle[] windowHandles) {
+ nativeSetInputWindows(mPtr, windowHandles);
+ }
+
+ public void setFocusedApplication(InputApplicationHandle application) {
+ nativeSetFocusedApplication(mPtr, application);
+ }
+
+ public void setInputDispatchMode(boolean enabled, boolean frozen) {
+ nativeSetInputDispatchMode(mPtr, enabled, frozen);
+ }
+
+ public void setSystemUiVisibility(int visibility) {
+ nativeSetSystemUiVisibility(mPtr, visibility);
+ }
+
+ /**
+ * Atomically transfers touch focus from one window to another as identified by
+ * their input channels. It is possible for multiple windows to have
+ * touch focus if they support split touch dispatch
+ * {@link android.view.WindowManager.LayoutParams#FLAG_SPLIT_TOUCH} but this
+ * method only transfers touch focus of the specified window without affecting
+ * other windows that may also have touch focus at the same time.
+ * @param fromChannel The channel of a window that currently has touch focus.
+ * @param toChannel The channel of the window that should receive touch focus in
+ * place of the first.
+ * @return True if the transfer was successful. False if the window with the
+ * specified channel did not actually have touch focus at the time of the request.
+ */
+ public boolean transferTouchFocus(InputChannel fromChannel, InputChannel toChannel) {
+ if (fromChannel == null) {
+ throw new IllegalArgumentException("fromChannel must not be null.");
+ }
+ if (toChannel == null) {
+ throw new IllegalArgumentException("toChannel must not be null.");
+ }
+ return nativeTransferTouchFocus(mPtr, fromChannel, toChannel);
+ }
+
+ /**
+ * Set the pointer speed.
+ * @param speed The pointer speed as a value between -7 (slowest) and 7 (fastest)
+ * where 0 is the default speed.
+ */
+ public void setPointerSpeed(int speed) {
+ speed = Math.min(Math.max(speed, -7), 7);
+ nativeSetPointerSpeed(mPtr, speed);
+ }
+
+ public void updatePointerSpeedFromSettings() {
+ int speed = getPointerSpeedSetting(0);
+ setPointerSpeed(speed);
+ }
+
+ private void registerPointerSpeedSettingObserver() {
+ mContext.getContentResolver().registerContentObserver(
+ Settings.System.getUriFor(Settings.System.POINTER_SPEED), true,
+ new ContentObserver(mHandler) {
+ @Override
+ public void onChange(boolean selfChange) {
+ updatePointerSpeedFromSettings();
+ }
+ });
+ }
+
+ private int getPointerSpeedSetting(int defaultValue) {
+ int speed = defaultValue;
+ try {
+ speed = Settings.System.getInt(mContext.getContentResolver(),
+ Settings.System.POINTER_SPEED);
+ } catch (SettingNotFoundException snfe) {
+ }
+ return speed;
+ }
+
+ public void updateShowTouchesFromSettings() {
+ int setting = getShowTouchesSetting(0);
+ nativeSetShowTouches(mPtr, setting != 0);
+ }
+
+ private void registerShowTouchesSettingObserver() {
+ mContext.getContentResolver().registerContentObserver(
+ Settings.System.getUriFor(Settings.System.SHOW_TOUCHES), true,
+ new ContentObserver(mHandler) {
+ @Override
+ public void onChange(boolean selfChange) {
+ updateShowTouchesFromSettings();
+ }
+ });
+ }
+
+ private int getShowTouchesSetting(int defaultValue) {
+ int result = defaultValue;
+ try {
+ result = Settings.System.getInt(mContext.getContentResolver(),
+ Settings.System.SHOW_TOUCHES);
+ } catch (SettingNotFoundException snfe) {
+ }
+ return result;
+ }
+
+ @Override
+ public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
+ if (mContext.checkCallingOrSelfPermission("android.permission.DUMP")
+ != PackageManager.PERMISSION_GRANTED) {
+ pw.println("Permission Denial: can't dump InputManager from from pid="
+ + Binder.getCallingPid()
+ + ", uid=" + Binder.getCallingUid());
+ return;
+ }
+
+ pw.println("INPUT MANAGER (dumpsys input)\n");
+ String dumpStr = nativeDump(mPtr);
+ if (dumpStr != null) {
+ pw.println(dumpStr);
+ }
+ }
+
+ // Called by the heartbeat to ensure locks are not held indefinitely (for deadlock detection).
+ public void monitor() {
+ synchronized (mInputFilterLock) { }
+ nativeMonitor(mPtr);
+ }
+
+ // Native callback.
+ private void notifyConfigurationChanged(long whenNanos) {
+ mCallbacks.notifyConfigurationChanged();
+ }
+
+ // Native callback.
+ private void notifyLidSwitchChanged(long whenNanos, boolean lidOpen) {
+ mCallbacks.notifyLidSwitchChanged(whenNanos, lidOpen);
+ }
+
+ // Native callback.
+ private void notifyInputChannelBroken(InputWindowHandle inputWindowHandle) {
+ mCallbacks.notifyInputChannelBroken(inputWindowHandle);
+ }
+
+ // Native callback.
+ private long notifyANR(InputApplicationHandle inputApplicationHandle,
+ InputWindowHandle inputWindowHandle) {
+ return mCallbacks.notifyANR(inputApplicationHandle, inputWindowHandle);
+ }
+
+ // Native callback.
+ final boolean filterInputEvent(InputEvent event, int policyFlags) {
+ synchronized (mInputFilterLock) {
+ if (mInputFilter != null) {
+ mInputFilter.filterInputEvent(event, policyFlags);
+ return false;
+ }
+ }
+ event.recycle();
+ return true;
+ }
+
+ // Native callback.
+ private int interceptKeyBeforeQueueing(KeyEvent event, int policyFlags, boolean isScreenOn) {
+ return mCallbacks.interceptKeyBeforeQueueing(
+ event, policyFlags, isScreenOn);
+ }
+
+ // Native callback.
+ private int interceptMotionBeforeQueueingWhenScreenOff(int policyFlags) {
+ return mCallbacks.interceptMotionBeforeQueueingWhenScreenOff(policyFlags);
+ }
+
+ // Native callback.
+ private long interceptKeyBeforeDispatching(InputWindowHandle focus,
+ KeyEvent event, int policyFlags) {
+ return mCallbacks.interceptKeyBeforeDispatching(focus, event, policyFlags);
+ }
+
+ // Native callback.
+ private KeyEvent dispatchUnhandledKey(InputWindowHandle focus,
+ KeyEvent event, int policyFlags) {
+ return mCallbacks.dispatchUnhandledKey(focus, event, policyFlags);
+ }
+
+ // Native callback.
+ private boolean checkInjectEventsPermission(int injectorPid, int injectorUid) {
+ return mContext.checkPermission(android.Manifest.permission.INJECT_EVENTS,
+ injectorPid, injectorUid) == PackageManager.PERMISSION_GRANTED;
+ }
+
+ // Native callback.
+ private int getVirtualKeyQuietTimeMillis() {
+ return mContext.getResources().getInteger(
+ com.android.internal.R.integer.config_virtualKeyQuietTimeMillis);
+ }
+
+ // Native callback.
+ private String[] getExcludedDeviceNames() {
+ ArrayList<String> names = new ArrayList<String>();
+
+ // Read partner-provided list of excluded input devices
+ XmlPullParser parser = null;
+ // Environment.getRootDirectory() is a fancy way of saying ANDROID_ROOT or "/system".
+ File confFile = new File(Environment.getRootDirectory(), EXCLUDED_DEVICES_PATH);
+ FileReader confreader = null;
+ try {
+ confreader = new FileReader(confFile);
+ parser = Xml.newPullParser();
+ parser.setInput(confreader);
+ XmlUtils.beginDocument(parser, "devices");
+
+ while (true) {
+ XmlUtils.nextElement(parser);
+ if (!"device".equals(parser.getName())) {
+ break;
+ }
+ String name = parser.getAttributeValue(null, "name");
+ if (name != null) {
+ names.add(name);
+ }
+ }
+ } catch (FileNotFoundException e) {
+ // It's ok if the file does not exist.
+ } catch (Exception e) {
+ Slog.e(TAG, "Exception while parsing '" + confFile.getAbsolutePath() + "'", e);
+ } finally {
+ try { if (confreader != null) confreader.close(); } catch (IOException e) { }
+ }
+
+ return names.toArray(new String[names.size()]);
+ }
+
+ // Native callback.
+ private int getKeyRepeatTimeout() {
+ return ViewConfiguration.getKeyRepeatTimeout();
+ }
+
+ // Native callback.
+ private int getKeyRepeatDelay() {
+ return ViewConfiguration.getKeyRepeatDelay();
+ }
+
+ // Native callback.
+ private int getHoverTapTimeout() {
+ return ViewConfiguration.getHoverTapTimeout();
+ }
+
+ // Native callback.
+ private int getHoverTapSlop() {
+ return ViewConfiguration.getHoverTapSlop();
+ }
+
+ // Native callback.
+ private int getDoubleTapTimeout() {
+ return ViewConfiguration.getDoubleTapTimeout();
+ }
+
+ // Native callback.
+ private int getLongPressTimeout() {
+ return ViewConfiguration.getLongPressTimeout();
+ }
+
+ // Native callback.
+ private int getPointerLayer() {
+ return mCallbacks.getPointerLayer();
+ }
+
+ // Native callback.
+ private PointerIcon getPointerIcon() {
+ return PointerIcon.getDefaultIcon(mContext);
+ }
+
+ /**
+ * Callback interface implemented by the Window Manager.
+ */
+ public interface Callbacks {
+ public void notifyConfigurationChanged();
+
+ public void notifyLidSwitchChanged(long whenNanos, boolean lidOpen);
+
+ public void notifyInputChannelBroken(InputWindowHandle inputWindowHandle);
+
+ public long notifyANR(InputApplicationHandle inputApplicationHandle,
+ InputWindowHandle inputWindowHandle);
+
+ public int interceptKeyBeforeQueueing(KeyEvent event, int policyFlags, boolean isScreenOn);
+
+ public int interceptMotionBeforeQueueingWhenScreenOff(int policyFlags);
+
+ public long interceptKeyBeforeDispatching(InputWindowHandle focus,
+ KeyEvent event, int policyFlags);
+
+ public KeyEvent dispatchUnhandledKey(InputWindowHandle focus,
+ KeyEvent event, int policyFlags);
+
+ public int getPointerLayer();
+ }
+
+ /**
+ * Hosting interface for input filters to call back into the input manager.
+ */
+ private final class InputFilterHost implements InputFilter.Host {
+ private boolean mDisconnected;
+
+ public void disconnectLocked() {
+ mDisconnected = true;
+ }
+
+ public void sendInputEvent(InputEvent event, int policyFlags) {
+ if (event == null) {
+ throw new IllegalArgumentException("event must not be null");
+ }
+
+ synchronized (mInputFilterLock) {
+ if (!mDisconnected) {
+ nativeInjectInputEvent(mPtr, event, 0, 0, INPUT_EVENT_INJECTION_SYNC_NONE, 0,
+ policyFlags | WindowManagerPolicy.FLAG_FILTERED);
+ }
+ }
+ }
+ }
+}