Implement FlashNotificationsController for AccessibilityManagerService. (b0994ef7) · Commits · e / os / android_frameworks_base

core/java/android/view/accessibility/AccessibilityManager.java

+121 −0

Original line number	Diff line number	Diff line
		@@ -186,6 +186,18 @@ public final class AccessibilityManager {
		*/
		public static final int ACCESSIBILITY_SHORTCUT_KEY = 1;

		/** @hide */
		public static final int FLASH_REASON_CALL = 1;

		/** @hide */
		public static final int FLASH_REASON_ALARM = 2;

		/** @hide */
		public static final int FLASH_REASON_NOTIFICATION = 3;

		/** @hide */
		public static final int FLASH_REASON_PREVIEW = 4;

		/**
		* Annotations for the shortcut type.
		* @hide
		@@ -209,6 +221,19 @@ public final class AccessibilityManager {
		})
		public @interface ContentFlag {}

		/**
		* Annotations for reason of Flash notification.
		* @hide
		*/
		@Retention(RetentionPolicy.SOURCE)
		@IntDef(prefix = { "FLASH_REASON_" }, value = {
		FLASH_REASON_CALL,
		FLASH_REASON_ALARM,
		FLASH_REASON_NOTIFICATION,
		FLASH_REASON_PREVIEW
		})
		public @interface FlashNotificationReason {}

		/**
		* Use this flag to indicate the content of a UI that times out contains icons.
		*
		@@ -316,6 +341,13 @@ public final class AccessibilityManager {
		*/
		private SparseArray<List<AccessibilityRequestPreparer>> mRequestPreparerLists;

		/**
		* Binder for flash notification.
		*
		* @see #startFlashNotificationSequence(Context, int)
		*/
		private final Binder mBinder = new Binder();

		/**
		* Listener for the system accessibility state. To listen for changes to the
		* accessibility state on the device, implement this interface and register
		@@ -2096,6 +2128,95 @@ public final class AccessibilityManager {
		}
		}

		/**
		* Start sequence (infinite) type of flash notification. Use
		* {@code Context.getOpPackageName()} as the identifier of this flash notification.
		* The notification can be cancelled later by calling {@link #stopFlashNotificationSequence}
		* with same {@code Context.getOpPackageName()}.
		* If the binder associated with this {@link AccessibilityManager} instance dies then the
		* sequence will stop automatically. It is strongly recommended to call
		* {@link #stopFlashNotificationSequence} within a reasonable amount of time after calling
		* this method.
		*
		* @param context The context in which this manager operates.
		* @param reason The triggering reason of flash notification.
		* @return {@code true} if flash notification works properly.
		* @hide
		*/
		public boolean startFlashNotificationSequence(@NonNull Context context,
		@FlashNotificationReason int reason) {
		final IAccessibilityManager service;
		synchronized (mLock) {
		service = getServiceLocked();
		if (service == null) {
		return false;
		}
		}

		try {
		return service.startFlashNotificationSequence(context.getOpPackageName(),
		reason, mBinder);
		} catch (RemoteException re) {
		Log.e(LOG_TAG, "Error while start flash notification sequence", re);
		return false;
		}
		}

		/**
		* Stop sequence (infinite) type of flash notification. The flash notification with
		* {@code Context.getOpPackageName()} as identifier will be stopped if exist.
		* It is strongly recommended to call this method within a reasonable amount of time after
		* calling {@link #startFlashNotificationSequence} method.
		*
		* @param context The context in which this manager operates.
		* @return {@code true} if flash notification stops properly.
		* @hide
		*/
		public boolean stopFlashNotificationSequence(@NonNull Context context) {
		final IAccessibilityManager service;
		synchronized (mLock) {
		service = getServiceLocked();
		if (service == null) {
		return false;
		}
		}

		try {
		return service.stopFlashNotificationSequence(context.getOpPackageName());
		} catch (RemoteException re) {
		Log.e(LOG_TAG, "Error while stop flash notification sequence", re);
		return false;
		}
		}

		/**
		* Start event (finite) type of flash notification.
		*
		* @param context The context in which this manager operates.
		* @param reason The triggering reason of flash notification.
		* @param reasonPkg The package that trigger the flash notification.
		* @return {@code true} if flash notification works properly.
		* @hide
		*/
		public boolean startFlashNotificationEvent(@NonNull Context context,
		@FlashNotificationReason int reason, @Nullable String reasonPkg) {
		final IAccessibilityManager service;
		synchronized (mLock) {
		service = getServiceLocked();
		if (service == null) {
		return false;
		}
		}

		try {
		return service.startFlashNotificationEvent(context.getOpPackageName(),
		reason, reasonPkg);
		} catch (RemoteException re) {
		Log.e(LOG_TAG, "Error while start flash notification event", re);
		return false;
		}
		}

		private IAccessibilityManager getServiceLocked() {
		if (mService == null) {
		tryConnectToServiceLocked(null);

core/java/android/view/accessibility/IAccessibilityManager.aidl

+4 −0

Original line number	Diff line number	Diff line
		@@ -120,4 +120,8 @@ interface IAccessibilityManager {
		void injectInputEventToInputFilter(in InputEvent event);

		float getUiContrast();

		boolean startFlashNotificationSequence(String opPkg, int reason, IBinder token);
		boolean stopFlashNotificationSequence(String opPkg);
		boolean startFlashNotificationEvent(String opPkg, int reason, String reasonPkg);
		}

services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java

+39 −0

Original line number	Diff line number	Diff line
		@@ -32,6 +32,7 @@ import static android.view.accessibility.AccessibilityManager.ACCESSIBILITY_MENU
		import static android.view.accessibility.AccessibilityManager.ACCESSIBILITY_SHORTCUT_KEY;
		import static android.view.accessibility.AccessibilityManager.CONTRAST_DEFAULT_VALUE;
		import static android.view.accessibility.AccessibilityManager.CONTRAST_NOT_SET;
		import static android.view.accessibility.AccessibilityManager.FlashNotificationReason;
		import static android.view.accessibility.AccessibilityManager.ShortcutType;

		import static com.android.internal.accessibility.AccessibilityShortcutController.ACCESSIBILITY_HEARING_AIDS_COMPONENT_NAME;
		@@ -314,6 +315,8 @@ public class AccessibilityManagerService extends IAccessibilityManager.Stub
		boolean mInputSessionRequested;
		private SparseArray<SurfaceControl> mA11yOverlayLayers = new SparseArray<>();

		private final FlashNotificationsController mFlashNotificationsController;

		private AccessibilityUserState getCurrentUserStateLocked() {
		return getUserStateLocked(mCurrentUserId);
		}
		@@ -440,6 +443,7 @@ public class AccessibilityManagerService extends IAccessibilityManager.Stub
		mInputFilter = inputFilter;
		mHasInputFilter = true;
		}
		mFlashNotificationsController = new FlashNotificationsController(mContext);
		init();
		}

		@@ -470,6 +474,7 @@ public class AccessibilityManagerService extends IAccessibilityManager.Stub
		mMagnificationProcessor = new MagnificationProcessor(mMagnificationController);
		mCaptioningManagerImpl = new CaptioningManagerImpl(mContext);
		mProxyManager = new ProxyManager(mLock, mA11yWindowManager);
		mFlashNotificationsController = new FlashNotificationsController(mContext);
		init();
		}

		@@ -3871,6 +3876,40 @@ public class AccessibilityManagerService extends IAccessibilityManager.Stub
		}
		}

		@Override
		public boolean startFlashNotificationSequence(String opPkg,
		@FlashNotificationReason int reason, IBinder token) {
		final long identity = Binder.clearCallingIdentity();
		try {
		return mFlashNotificationsController.startFlashNotificationSequence(opPkg,
		reason, token);
		} finally {
		Binder.restoreCallingIdentity(identity);
		}
		}

		@Override
		public boolean stopFlashNotificationSequence(String opPkg) {
		final long identity = Binder.clearCallingIdentity();
		try {
		return mFlashNotificationsController.stopFlashNotificationSequence(opPkg);
		} finally {
		Binder.restoreCallingIdentity(identity);
		}
		}

		@Override
		public boolean startFlashNotificationEvent(String opPkg,
		@FlashNotificationReason int reason, String reasonPkg) {
		final long identity = Binder.clearCallingIdentity();
		try {
		return mFlashNotificationsController.startFlashNotificationEvent(opPkg,
		reason, reasonPkg);
		} finally {
		Binder.restoreCallingIdentity(identity);
		}
		}

		@Override
		public void dump(FileDescriptor fd, final PrintWriter pw, String[] args) {
		if (!DumpUtils.checkDumpPermission(mContext, LOG_TAG, pw)) return;

services/accessibility/java/com/android/server/accessibility/FlashNotificationsController.java

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+936 −0

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services/tests/servicestests/src/com/android/server/accessibility/FlashNotificationsControllerTest.java

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+509 −0

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