services/core/java/com/android/server/wm/InputManagerCallback.java - platform/frameworks/base - Gitiles

 package com.android.server.wm;

 import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
 import static android.view.Display.DEFAULT_DISPLAY;
 import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;

 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_INPUT;
 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME;
 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
 import static com.android.server.wm.WindowManagerService.H.ON_POINTER_DOWN_OUTSIDE_FOCUS;

 import android.os.Debug;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.util.Slog;
 import android.view.IWindow;
 import android.view.KeyEvent;
 import android.view.WindowManager;

 import com.android.server.input.InputManagerService;

 import java.io.PrintWriter;
 import java.util.concurrent.atomic.AtomicReference;

 final class InputManagerCallback implements InputManagerService.WindowManagerCallbacks {
     private static final String TAG = TAG_WITH_CLASS_NAME ? "InputManagerCallback" : TAG_WM;
     private final WindowManagerService mService;

     // Set to true when the first input device configuration change notification
     // is received to indicate that the input devices are ready.
     private final Object mInputDevicesReadyMonitor = new Object();
     private boolean mInputDevicesReady;

     // When true, prevents input dispatch from proceeding until set to false again.
     private boolean mInputDispatchFrozen;

     // The reason the input is currently frozen or null if the input isn't frozen.
     private String mInputFreezeReason = null;

     // When true, input dispatch proceeds normally.  Otherwise all events are dropped.
     // Initially false, so that input does not get dispatched until boot is finished at
     // which point the ActivityManager will enable dispatching.
     private boolean mInputDispatchEnabled;

     // TODO(b/141749603)) investigate if this can be part of client focus change dispatch
     // Tracks the currently focused window used to update pointer capture state in clients
     private AtomicReference<IWindow> mFocusedWindow = new AtomicReference<>();

     // Tracks focused window pointer capture state
     private boolean mFocusedWindowHasCapture;

     public InputManagerCallback(WindowManagerService service) {
         mService = service;
     }

     /**
      * Notifies the window manager about a broken input channel.
      *
      * Called by the InputManager.
      */
     @Override
     public void notifyInputChannelBroken(IBinder token) {
         if (token == null) {
             return;
         }

         synchronized (mService.mGlobalLock) {
             WindowState windowState = mService.mInputToWindowMap.get(token);
             if (windowState != null) {
                 Slog.i(TAG_WM, "WINDOW DIED " + windowState);
                 windowState.removeIfPossible();
             }
         }
     }

     /**
      * Notifies the window manager about an application that is not responding.
      * Returns a new timeout to continue waiting in nanoseconds, or 0 to abort dispatch.
      *
      * Called by the InputManager.
      */
     @Override
     public long notifyANR(IBinder token, String reason) {
         ActivityRecord activity = null;
         WindowState windowState = null;
         boolean aboveSystem = false;
         //TODO(b/141764879) Limit scope of wm lock when input calls notifyANR
         synchronized (mService.mGlobalLock) {
             if (token != null) {
                 windowState = mService.mInputToWindowMap.get(token);
                 if (windowState != null) {
                     activity = windowState.mActivityRecord;
                 }
             }

             if (windowState != null) {
                 Slog.i(TAG_WM, "Input event dispatching timed out "
                         + "sending to " + windowState.mAttrs.getTitle()
                         + ".  Reason: " + reason);
                 // Figure out whether this window is layered above system windows.
                 // We need to do this here to help the activity manager know how to
                 // layer its ANR dialog.
                 int systemAlertLayer = mService.mPolicy.getWindowLayerFromTypeLw(
                         TYPE_APPLICATION_OVERLAY, windowState.mOwnerCanAddInternalSystemWindow);
                 aboveSystem = windowState.mBaseLayer > systemAlertLayer;
             } else if (activity != null) {
                 Slog.i(TAG_WM, "Input event dispatching timed out "
                         + "sending to application " + activity.stringName
                         + ".  Reason: " + reason);
             } else {
                 Slog.i(TAG_WM, "Input event dispatching timed out "
                         + ".  Reason: " + reason);
             }

             mService.saveANRStateLocked(activity, windowState, reason);
         }

         // All the calls below need to happen without the WM lock held since they call into AM.
         mService.mAtmInternal.saveANRState(reason);

         if (activity != null && activity.appToken != null) {
             // Notify the activity manager about the timeout and let it decide whether
             // to abort dispatching or keep waiting.
             final boolean abort = activity.keyDispatchingTimedOut(reason,
                     windowState.mSession.mPid);
             if (!abort) {
                 // The activity manager declined to abort dispatching.
                 // Wait a bit longer and timeout again later.
                 return activity.mInputDispatchingTimeoutNanos;
             }
         } else if (windowState != null) {
             // Notify the activity manager about the timeout and let it decide whether
             // to abort dispatching or keep waiting.
             long timeout = mService.mAmInternal.inputDispatchingTimedOut(
                     windowState.mSession.mPid, aboveSystem, reason);
             if (timeout >= 0) {
                 // The activity manager declined to abort dispatching.
                 // Wait a bit longer and timeout again later.
                 return timeout * 1000000L; // nanoseconds
             }
         }
         return 0; // abort dispatching
     }

     /** Notifies that the input device configuration has changed. */
     @Override
     public void notifyConfigurationChanged() {
         // TODO(multi-display): Notify proper displays that are associated with this input device.

         synchronized (mService.mGlobalLock) {
             mService.getDefaultDisplayContentLocked().sendNewConfiguration();
         }

         synchronized (mInputDevicesReadyMonitor) {
             if (!mInputDevicesReady) {
                 mInputDevicesReady = true;
                 mInputDevicesReadyMonitor.notifyAll();
             }
         }
     }

     /** Notifies that the lid switch changed state. */
     @Override
     public void notifyLidSwitchChanged(long whenNanos, boolean lidOpen) {
         mService.mPolicy.notifyLidSwitchChanged(whenNanos, lidOpen);
     }

     /** Notifies that the camera lens cover state has changed. */
     @Override
     public void notifyCameraLensCoverSwitchChanged(long whenNanos, boolean lensCovered) {
         mService.mPolicy.notifyCameraLensCoverSwitchChanged(whenNanos, lensCovered);
     }

     /**
      * Provides an opportunity for the window manager policy to intercept early key
      * processing as soon as the key has been read from the device.
      */
     @Override
     public int interceptKeyBeforeQueueing(KeyEvent event, int policyFlags) {
         return mService.mPolicy.interceptKeyBeforeQueueing(event, policyFlags);
     }

     /** {@inheritDoc} */
     @Override
     public int interceptMotionBeforeQueueingNonInteractive(int displayId, long whenNanos,
             int policyFlags) {
         return mService.mPolicy.interceptMotionBeforeQueueingNonInteractive(
                 displayId, whenNanos, policyFlags);
     }

     /**
      * Provides an opportunity for the window manager policy to process a key before
      * ordinary dispatch.
      */
     @Override
     public long interceptKeyBeforeDispatching(
             IBinder focusedToken, KeyEvent event, int policyFlags) {
         return mService.mPolicy.interceptKeyBeforeDispatching(focusedToken, event, policyFlags);
     }

     /**
      * Provides an opportunity for the window manager policy to process a key that
      * the application did not handle.
      */
     @Override
     public KeyEvent dispatchUnhandledKey(
             IBinder focusedToken, KeyEvent event, int policyFlags) {
         return mService.mPolicy.dispatchUnhandledKey(focusedToken, event, policyFlags);
     }

     /** Callback to get pointer layer. */
     @Override
     public int getPointerLayer() {
         return mService.mPolicy.getWindowLayerFromTypeLw(WindowManager.LayoutParams.TYPE_POINTER)
                 * WindowManagerService.TYPE_LAYER_MULTIPLIER
                 + WindowManagerService.TYPE_LAYER_OFFSET;
     }

     /** Callback to get pointer display id. */
     @Override
     public int getPointerDisplayId() {
         synchronized (mService.mGlobalLock) {
             // If desktop mode is not enabled, show on the default display.
             if (!mService.mForceDesktopModeOnExternalDisplays) {
                 return DEFAULT_DISPLAY;
             }

             // Look for the topmost freeform display.
             int firstExternalDisplayId = DEFAULT_DISPLAY;
             for (int i = mService.mRoot.mChildren.size() - 1; i >= 0; --i) {
                 final DisplayContent displayContent = mService.mRoot.mChildren.get(i);
                 // Heuristic solution here. Currently when "Freeform windows" developer option is
                 // enabled we automatically put secondary displays in freeform mode and emulating
                 // "desktop mode". It also makes sense to show the pointer on the same display.
                 if (displayContent.getWindowingMode() == WINDOWING_MODE_FREEFORM) {
                     return displayContent.getDisplayId();
                 }

                 if (firstExternalDisplayId == DEFAULT_DISPLAY
                         && displayContent.getDisplayId() != DEFAULT_DISPLAY) {
                     firstExternalDisplayId = displayContent.getDisplayId();
                 }
             }

             // Look for the topmost non-default display
             return firstExternalDisplayId;
         }
     }

     @Override
     public void onPointerDownOutsideFocus(IBinder touchedToken) {
         mService.mH.obtainMessage(ON_POINTER_DOWN_OUTSIDE_FOCUS, touchedToken).sendToTarget();
     }

     @Override
     public boolean notifyFocusChanged(IBinder oldToken, IBinder newToken) {
         boolean requestRefreshConfiguration = false;
         final IWindow newFocusedWindow;
         final WindowState win;

         // TODO(b/141749603) investigate if this can be part of client focus change dispatch
         synchronized (mService.mGlobalLock) {
             win = mService.mInputToWindowMap.get(newToken);
         }
         newFocusedWindow = (win != null) ? win.mClient : null;

         final IWindow focusedWindow = mFocusedWindow.get();
         if (focusedWindow != null) {
             if (newFocusedWindow != null
                     && newFocusedWindow.asBinder() == focusedWindow.asBinder()) {
                 Slog.w(TAG, "notifyFocusChanged called with unchanged mFocusedWindow="
                         + focusedWindow);
                 return false;
             }
             requestRefreshConfiguration = dispatchPointerCaptureChanged(focusedWindow, false);
         }
         mFocusedWindow.set(newFocusedWindow);
         return requestRefreshConfiguration;
     }

     @Override
     public boolean requestPointerCapture(IBinder windowToken, boolean enabled) {
         final IWindow focusedWindow = mFocusedWindow.get();
         if (focusedWindow == null || focusedWindow.asBinder() != windowToken) {
             Slog.e(TAG, "requestPointerCapture called for a window that has no focus: "
                     + windowToken);
             return false;
         }
         if (mFocusedWindowHasCapture == enabled) {
             Slog.i(TAG, "requestPointerCapture: already " + (enabled ? "enabled" : "disabled"));
             return false;
         }
         return dispatchPointerCaptureChanged(focusedWindow, enabled);
     }

     private boolean dispatchPointerCaptureChanged(IWindow focusedWindow, boolean enabled) {
         if (mFocusedWindowHasCapture != enabled) {
             mFocusedWindowHasCapture = enabled;
             try {
                 focusedWindow.dispatchPointerCaptureChanged(enabled);
             } catch (RemoteException ex) {
                 /* ignore */
             }
             return true;
         }
         return false;
     }

     /** Waits until the built-in input devices have been configured. */
     public boolean waitForInputDevicesReady(long timeoutMillis) {
         synchronized (mInputDevicesReadyMonitor) {
             if (!mInputDevicesReady) {
                 try {
                     mInputDevicesReadyMonitor.wait(timeoutMillis);
                 } catch (InterruptedException ex) {
                 }
             }
             return mInputDevicesReady;
         }
     }

     public void freezeInputDispatchingLw() {
         if (!mInputDispatchFrozen) {
             if (DEBUG_INPUT) {
                 Slog.v(TAG_WM, "Freezing input dispatching");
             }

             mInputDispatchFrozen = true;

             if (DEBUG_INPUT) {
                 mInputFreezeReason = Debug.getCallers(6);
             }
             updateInputDispatchModeLw();
         }
     }

     public void thawInputDispatchingLw() {
         if (mInputDispatchFrozen) {
             if (DEBUG_INPUT) {
                 Slog.v(TAG_WM, "Thawing input dispatching");
             }

             mInputDispatchFrozen = false;
             mInputFreezeReason = null;
             updateInputDispatchModeLw();
         }
     }

     public void setEventDispatchingLw(boolean enabled) {
         if (mInputDispatchEnabled != enabled) {
             if (DEBUG_INPUT) {
                 Slog.v(TAG_WM, "Setting event dispatching to " + enabled);
             }

             mInputDispatchEnabled = enabled;
             updateInputDispatchModeLw();
         }
     }

     private void updateInputDispatchModeLw() {
         mService.mInputManager.setInputDispatchMode(mInputDispatchEnabled, mInputDispatchFrozen);
     }

     void dump(PrintWriter pw, String prefix) {
         if (mInputFreezeReason != null) {
             pw.println(prefix + "mInputFreezeReason=" + mInputFreezeReason);
         }
     }
 }
	package com.android.server.wm;

	import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
	import static android.view.Display.DEFAULT_DISPLAY;
	import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;

	import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_INPUT;
	import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME;
	import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
	import static com.android.server.wm.WindowManagerService.H.ON_POINTER_DOWN_OUTSIDE_FOCUS;

	import android.os.Debug;
	import android.os.IBinder;
	import android.os.RemoteException;
	import android.util.Slog;
	import android.view.IWindow;
	import android.view.KeyEvent;
	import android.view.WindowManager;

	import com.android.server.input.InputManagerService;

	import java.io.PrintWriter;
	import java.util.concurrent.atomic.AtomicReference;

	final class InputManagerCallback implements InputManagerService.WindowManagerCallbacks {
	private static final String TAG = TAG_WITH_CLASS_NAME ? "InputManagerCallback" : TAG_WM;
	private final WindowManagerService mService;

	// Set to true when the first input device configuration change notification
	// is received to indicate that the input devices are ready.
	private final Object mInputDevicesReadyMonitor = new Object();
	private boolean mInputDevicesReady;

	// When true, prevents input dispatch from proceeding until set to false again.
	private boolean mInputDispatchFrozen;

	// The reason the input is currently frozen or null if the input isn't frozen.
	private String mInputFreezeReason = null;

	// When true, input dispatch proceeds normally. Otherwise all events are dropped.
	// Initially false, so that input does not get dispatched until boot is finished at
	// which point the ActivityManager will enable dispatching.
	private boolean mInputDispatchEnabled;

	// TODO(b/141749603)) investigate if this can be part of client focus change dispatch
	// Tracks the currently focused window used to update pointer capture state in clients
	private AtomicReference<IWindow> mFocusedWindow = new AtomicReference<>();

	// Tracks focused window pointer capture state
	private boolean mFocusedWindowHasCapture;

	public InputManagerCallback(WindowManagerService service) {
	mService = service;
	}

	/**
	* Notifies the window manager about a broken input channel.
	*
	* Called by the InputManager.
	*/
	@Override
	public void notifyInputChannelBroken(IBinder token) {
	if (token == null) {
	return;
	}

	synchronized (mService.mGlobalLock) {
	WindowState windowState = mService.mInputToWindowMap.get(token);
	if (windowState != null) {
	Slog.i(TAG_WM, "WINDOW DIED " + windowState);
	windowState.removeIfPossible();
	}
	}
	}

	/**
	* Notifies the window manager about an application that is not responding.
	* Returns a new timeout to continue waiting in nanoseconds, or 0 to abort dispatch.
	*
	* Called by the InputManager.
	*/
	@Override
	public long notifyANR(IBinder token, String reason) {
	ActivityRecord activity = null;
	WindowState windowState = null;
	boolean aboveSystem = false;
	//TODO(b/141764879) Limit scope of wm lock when input calls notifyANR
	synchronized (mService.mGlobalLock) {
	if (token != null) {
	windowState = mService.mInputToWindowMap.get(token);
	if (windowState != null) {
	activity = windowState.mActivityRecord;
	}
	}

	if (windowState != null) {
	Slog.i(TAG_WM, "Input event dispatching timed out "
	+ "sending to " + windowState.mAttrs.getTitle()
	+ ". Reason: " + reason);
	// Figure out whether this window is layered above system windows.
	// We need to do this here to help the activity manager know how to
	// layer its ANR dialog.
	int systemAlertLayer = mService.mPolicy.getWindowLayerFromTypeLw(
	TYPE_APPLICATION_OVERLAY, windowState.mOwnerCanAddInternalSystemWindow);
	aboveSystem = windowState.mBaseLayer > systemAlertLayer;
	} else if (activity != null) {
	Slog.i(TAG_WM, "Input event dispatching timed out "
	+ "sending to application " + activity.stringName
	+ ". Reason: " + reason);
	} else {
	Slog.i(TAG_WM, "Input event dispatching timed out "
	+ ". Reason: " + reason);
	}

	mService.saveANRStateLocked(activity, windowState, reason);
	}

	// All the calls below need to happen without the WM lock held since they call into AM.
	mService.mAtmInternal.saveANRState(reason);

	if (activity != null && activity.appToken != null) {
	// Notify the activity manager about the timeout and let it decide whether
	// to abort dispatching or keep waiting.
	final boolean abort = activity.keyDispatchingTimedOut(reason,
	windowState.mSession.mPid);
	if (!abort) {
	// The activity manager declined to abort dispatching.
	// Wait a bit longer and timeout again later.
	return activity.mInputDispatchingTimeoutNanos;
	}
	} else if (windowState != null) {
	// Notify the activity manager about the timeout and let it decide whether
	// to abort dispatching or keep waiting.
	long timeout = mService.mAmInternal.inputDispatchingTimedOut(
	windowState.mSession.mPid, aboveSystem, reason);
	if (timeout >= 0) {
	// The activity manager declined to abort dispatching.
	// Wait a bit longer and timeout again later.
	return timeout * 1000000L; // nanoseconds
	}
	}
	return 0; // abort dispatching
	}

	/** Notifies that the input device configuration has changed. */
	@Override
	public void notifyConfigurationChanged() {
	// TODO(multi-display): Notify proper displays that are associated with this input device.

	synchronized (mService.mGlobalLock) {
	mService.getDefaultDisplayContentLocked().sendNewConfiguration();
	}

	synchronized (mInputDevicesReadyMonitor) {
	if (!mInputDevicesReady) {
	mInputDevicesReady = true;
	mInputDevicesReadyMonitor.notifyAll();
	}
	}
	}

	/** Notifies that the lid switch changed state. */
	@Override
	public void notifyLidSwitchChanged(long whenNanos, boolean lidOpen) {
	mService.mPolicy.notifyLidSwitchChanged(whenNanos, lidOpen);
	}

	/** Notifies that the camera lens cover state has changed. */
	@Override
	public void notifyCameraLensCoverSwitchChanged(long whenNanos, boolean lensCovered) {
	mService.mPolicy.notifyCameraLensCoverSwitchChanged(whenNanos, lensCovered);
	}

	/**
	* Provides an opportunity for the window manager policy to intercept early key
	* processing as soon as the key has been read from the device.
	*/
	@Override
	public int interceptKeyBeforeQueueing(KeyEvent event, int policyFlags) {
	return mService.mPolicy.interceptKeyBeforeQueueing(event, policyFlags);
	}

	/** {@inheritDoc} */
	@Override
	public int interceptMotionBeforeQueueingNonInteractive(int displayId, long whenNanos,
	int policyFlags) {
	return mService.mPolicy.interceptMotionBeforeQueueingNonInteractive(
	displayId, whenNanos, policyFlags);
	}

	/**
	* Provides an opportunity for the window manager policy to process a key before
	* ordinary dispatch.
	*/
	@Override
	public long interceptKeyBeforeDispatching(
	IBinder focusedToken, KeyEvent event, int policyFlags) {
	return mService.mPolicy.interceptKeyBeforeDispatching(focusedToken, event, policyFlags);
	}

	/**
	* Provides an opportunity for the window manager policy to process a key that
	* the application did not handle.
	*/
	@Override
	public KeyEvent dispatchUnhandledKey(
	IBinder focusedToken, KeyEvent event, int policyFlags) {
	return mService.mPolicy.dispatchUnhandledKey(focusedToken, event, policyFlags);
	}

	/** Callback to get pointer layer. */
	@Override
	public int getPointerLayer() {
	return mService.mPolicy.getWindowLayerFromTypeLw(WindowManager.LayoutParams.TYPE_POINTER)
	* WindowManagerService.TYPE_LAYER_MULTIPLIER
	+ WindowManagerService.TYPE_LAYER_OFFSET;
	}

	/** Callback to get pointer display id. */
	@Override
	public int getPointerDisplayId() {
	synchronized (mService.mGlobalLock) {
	// If desktop mode is not enabled, show on the default display.
	if (!mService.mForceDesktopModeOnExternalDisplays) {
	return DEFAULT_DISPLAY;
	}

	// Look for the topmost freeform display.
	int firstExternalDisplayId = DEFAULT_DISPLAY;
	for (int i = mService.mRoot.mChildren.size() - 1; i >= 0; --i) {
	final DisplayContent displayContent = mService.mRoot.mChildren.get(i);
	// Heuristic solution here. Currently when "Freeform windows" developer option is
	// enabled we automatically put secondary displays in freeform mode and emulating
	// "desktop mode". It also makes sense to show the pointer on the same display.
	if (displayContent.getWindowingMode() == WINDOWING_MODE_FREEFORM) {
	return displayContent.getDisplayId();
	}

	if (firstExternalDisplayId == DEFAULT_DISPLAY
	&& displayContent.getDisplayId() != DEFAULT_DISPLAY) {
	firstExternalDisplayId = displayContent.getDisplayId();
	}
	}

	// Look for the topmost non-default display
	return firstExternalDisplayId;
	}
	}

	@Override
	public void onPointerDownOutsideFocus(IBinder touchedToken) {
	mService.mH.obtainMessage(ON_POINTER_DOWN_OUTSIDE_FOCUS, touchedToken).sendToTarget();
	}

	@Override
	public boolean notifyFocusChanged(IBinder oldToken, IBinder newToken) {
	boolean requestRefreshConfiguration = false;
	final IWindow newFocusedWindow;
	final WindowState win;

	// TODO(b/141749603) investigate if this can be part of client focus change dispatch
	synchronized (mService.mGlobalLock) {
	win = mService.mInputToWindowMap.get(newToken);
	}
	newFocusedWindow = (win != null) ? win.mClient : null;

	final IWindow focusedWindow = mFocusedWindow.get();
	if (focusedWindow != null) {
	if (newFocusedWindow != null
	&& newFocusedWindow.asBinder() == focusedWindow.asBinder()) {
	Slog.w(TAG, "notifyFocusChanged called with unchanged mFocusedWindow="
	+ focusedWindow);
	return false;
	}
	requestRefreshConfiguration = dispatchPointerCaptureChanged(focusedWindow, false);
	}
	mFocusedWindow.set(newFocusedWindow);
	return requestRefreshConfiguration;
	}

	@Override
	public boolean requestPointerCapture(IBinder windowToken, boolean enabled) {
	final IWindow focusedWindow = mFocusedWindow.get();
	if (focusedWindow == null \|\| focusedWindow.asBinder() != windowToken) {
	Slog.e(TAG, "requestPointerCapture called for a window that has no focus: "
	+ windowToken);
	return false;
	}
	if (mFocusedWindowHasCapture == enabled) {
	Slog.i(TAG, "requestPointerCapture: already " + (enabled ? "enabled" : "disabled"));
	return false;
	}
	return dispatchPointerCaptureChanged(focusedWindow, enabled);
	}

	private boolean dispatchPointerCaptureChanged(IWindow focusedWindow, boolean enabled) {
	if (mFocusedWindowHasCapture != enabled) {
	mFocusedWindowHasCapture = enabled;
	try {
	focusedWindow.dispatchPointerCaptureChanged(enabled);
	} catch (RemoteException ex) {
	/* ignore */
	}
	return true;
	}
	return false;
	}

	/** Waits until the built-in input devices have been configured. */
	public boolean waitForInputDevicesReady(long timeoutMillis) {
	synchronized (mInputDevicesReadyMonitor) {
	if (!mInputDevicesReady) {
	try {
	mInputDevicesReadyMonitor.wait(timeoutMillis);
	} catch (InterruptedException ex) {
	}
	}
	return mInputDevicesReady;
	}
	}

	public void freezeInputDispatchingLw() {
	if (!mInputDispatchFrozen) {
	if (DEBUG_INPUT) {
	Slog.v(TAG_WM, "Freezing input dispatching");
	}

	mInputDispatchFrozen = true;

	if (DEBUG_INPUT) {
	mInputFreezeReason = Debug.getCallers(6);
	}
	updateInputDispatchModeLw();
	}
	}

	public void thawInputDispatchingLw() {
	if (mInputDispatchFrozen) {
	if (DEBUG_INPUT) {
	Slog.v(TAG_WM, "Thawing input dispatching");
	}

	mInputDispatchFrozen = false;
	mInputFreezeReason = null;
	updateInputDispatchModeLw();
	}
	}

	public void setEventDispatchingLw(boolean enabled) {
	if (mInputDispatchEnabled != enabled) {
	if (DEBUG_INPUT) {
	Slog.v(TAG_WM, "Setting event dispatching to " + enabled);
	}

	mInputDispatchEnabled = enabled;
	updateInputDispatchModeLw();
	}
	}

	private void updateInputDispatchModeLw() {
	mService.mInputManager.setInputDispatchMode(mInputDispatchEnabled, mInputDispatchFrozen);
	}

	void dump(PrintWriter pw, String prefix) {
	if (mInputFreezeReason != null) {
	pw.println(prefix + "mInputFreezeReason=" + mInputFreezeReason);
	}
	}
	}