Rewire WallpaperManager keyguard callback (fbfbc3cc) · Commits · e / os / android_frameworks_base

core/java/android/app/WallpaperManager.java

+15 −1

Original line number	Diff line number	Diff line
		@@ -248,13 +248,27 @@ public class WallpaperManager {
		/**
		* Command for {@link #sendWallpaperCommand}: reported by System UI when the device keyguard
		* starts going away.
		* This command is triggered by {@link android.app.IActivityTaskManager#keyguardGoingAway(int)}.
		* <p>
		* This command is triggered by {@link android.app.IActivityTaskManager#keyguardGoingAway(int)}
		* or by {@link android.app.IActivityTaskManager#setLockScreenShown(boolean, boolean)}.
		*
		* @hide
		*/
		public static final String COMMAND_KEYGUARD_GOING_AWAY =
		"android.wallpaper.keyguardgoingaway";

		/**
		* Command for {@link #sendWallpaperCommand}: reported by System UI when the device keyguard
		* starts going away.
		*
		* <p>This command is triggered by
		* {@link android.app.IActivityTaskManager#setLockScreenShown(boolean, boolean)}.
		*
		* @hide
		*/
		public static final String COMMAND_KEYGUARD_APPEARING =
		"android.wallpaper.keyguardappearing";

		/**
		* Command for {@link #sendWallpaperCommand}: reported by System UI when the device is going to
		* sleep. The x and y arguments are a location (possibly very roughly) corresponding to the

core/java/android/app/wallpaper.aconfig

+10 −0

Original line number	Diff line number	Diff line
		@@ -23,6 +23,16 @@ flag {
		is_exported: true
		}

		flag {
		name: "notify_keyguard_events"
		namespace: "systemui"
		description: "Send keyguard showing/hiding/going-away events to wallpaper as wallpaper commands (guarded by permission)"
		bug: "395897130"
		metadata {
		purpose: PURPOSE_BUGFIX
		}
		}

		flag {
		name: "accurate_wallpaper_downsampling"
		namespace: "systemui"

services/core/java/com/android/server/wallpaper/WallpaperManagerInternal.java

+0 −3

Original line number	Diff line number	Diff line
		@@ -36,7 +36,4 @@ public abstract class WallpaperManagerInternal {

		/** Notifies when the screen starts turning on and is not yet visible to the user. */
		public abstract void onScreenTurningOn(int displayId);

		/** Notifies when the keyguard is going away. Sent right after the bouncer is gone. */
		public abstract void onKeyguardGoingAway();
		}

services/core/java/com/android/server/wallpaper/WallpaperManagerService.java

+61 −8

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ import static android.Manifest.permission.READ_WALLPAPER_INTERNAL;
		import static android.app.ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND;
		import static android.app.Flags.fixWallpaperChanged;
		import static android.app.Flags.liveWallpaperContentHandling;
		import static android.app.Flags.notifyKeyguardEvents;
		import static android.app.Flags.removeNextWallpaperComponent;
		import static android.app.WallpaperManager.COMMAND_REAPPLY;
		import static android.app.WallpaperManager.FLAG_LOCK;
		@@ -1705,8 +1706,32 @@ public class WallpaperManagerService extends IWallpaperManager.Stub
		mWallpaperDataParser = new WallpaperDataParser(mContext, mWallpaperDisplayHelper,
		mWallpaperCropper);
		LocalServices.addService(WallpaperManagerInternal.class, new LocalService());

		LocalServices.getService(ActivityTaskManagerInternal.class)
		.registerScreenObserver(mKeyguardObserver);

		}

		private final ActivityTaskManagerInternal.ScreenObserver mKeyguardObserver =
		new ActivityTaskManagerInternal.ScreenObserver() {
		@Override
		public void onKeyguardStateChanged(boolean isShowing) {
		if (!notifyKeyguardEvents()) {
		return;
		}
		if (isShowing) {
		notifyKeyguardAppearing();
		} else {
		notifyKeyguardGoingAway();
		}
		}

		@Override
		public void onKeyguardGoingAway() {
		notifyKeyguardGoingAway();
		}
		};

		private final class LocalService extends WallpaperManagerInternal {
		@Override
		public void onDisplayAddSystemDecorations(int displayId) {
		@@ -1729,11 +1754,6 @@ public class WallpaperManagerService extends IWallpaperManager.Stub
		public void onScreenTurningOn(int displayId) {
		notifyScreenTurningOn(displayId);
		}

		@Override
		public void onKeyguardGoingAway() {
		notifyKeyguardGoingAway();
		}
		}

		void initialize() {
		@@ -2562,6 +2582,18 @@ public class WallpaperManagerService extends IWallpaperManager.Stub
		return mContext.checkCallingOrSelfPermission(permission) == PERMISSION_GRANTED;
		}

		private boolean hasPermission(WallpaperData data, String permission) {
		try {
		return PackageManager.PERMISSION_GRANTED == mIPackageManager.checkPermission(
		permission,
		data.getComponent().getPackageName(),
		data.userId);
		} catch (RemoteException e) {
		Slog.e(TAG, "Failed to check wallpaper service permission", e);
		return false;
		}
		}

		private boolean hasAppOpPermission(String permission, int callingUid, String callingPackage,
		String attributionTag, String message) {
		final String op = AppOpsManager.permissionToOp(permission);
		@@ -2864,16 +2896,37 @@ public class WallpaperManagerService extends IWallpaperManager.Stub
		* Propagate a keyguard going away event to the wallpaper engine.
		*/
		private void notifyKeyguardGoingAway() {
		dispatchKeyguardCommand(WallpaperManager.COMMAND_KEYGUARD_GOING_AWAY);
		}

		/**
		* Propagate a keyguard appearing event to the wallpaper engine.
		*/
		private void notifyKeyguardAppearing() {
		dispatchKeyguardCommand(WallpaperManager.COMMAND_KEYGUARD_APPEARING);
		}

		/**
		* Propagate a keyguard-related event to the wallpaper engine.
		*
		* When the flag below is enabled, the event will only be dispatched in case the recipient
		* has {@link android.Manifest.pertmission.SUBSCRIBE_TO_KEYGUARD_LOCKED_STATE} permission.
		*/
		private void dispatchKeyguardCommand(String command) {
		synchronized (mLock) {
		for (WallpaperData data : getActiveWallpapers()) {
		if (notifyKeyguardEvents() && !hasPermission(
		data, android.Manifest.permission.SUBSCRIBE_TO_KEYGUARD_LOCKED_STATE)) {
		continue;
		}

		data.connection.forEachDisplayConnector(displayConnector -> {
		if (displayConnector.mEngine != null) {
		try {
		displayConnector.mEngine.dispatchWallpaperCommand(
		WallpaperManager.COMMAND_KEYGUARD_GOING_AWAY,
		-1, -1, -1, new Bundle());
		command, -1, -1, -1, new Bundle());
		} catch (RemoteException e) {
		Slog.w(TAG, "Failed to notify that the keyguard is going away", e);
		Slog.w(TAG, "Failed to dispatch wallpaper command: " + command, e);
		}
		}
		});

services/core/java/com/android/server/wm/ActivityTaskManagerInternal.java

+3 −2

Original line number	Diff line number	Diff line
		@@ -124,8 +124,9 @@ public abstract class ActivityTaskManagerInternal {
		public static final String ASSIST_KEY_RECEIVER_EXTRAS = "receiverExtras";

		public interface ScreenObserver {
		void onAwakeStateChanged(boolean isAwake);
		void onKeyguardStateChanged(boolean isShowing);
		default void onAwakeStateChanged(boolean isAwake) {}
		default void onKeyguardStateChanged(boolean isShowing) {}
		default void onKeyguardGoingAway() {}
		}

		/**