Merge "Allow IVoiceInteractionSessionListener to listen for window vis changes" into tm-dev am: 44e14e72b6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17211290

Change-Id: I0ef34055a82eca0d2f2efcefae2aeb99eb0640e9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

core/java/android/service/voice/VoiceInteractionSession.java

@@ -1095,7 +1095,7 @@ public class VoiceInteractionSession implements KeyEvent.Callback, ComponentCall
             if (!mWindowVisible) {
                 mWindowVisible = true;
                 if (mUiEnabled) {
-                    mWindow.show();
+                    showWindow();
                 }
             }
             if (showCallback != null) {
@@ -1284,9 +1284,25 @@ public class VoiceInteractionSession implements KeyEvent.Callback, ComponentCall
         }
     }
 
+    void showWindow() {
+        if (mWindow != null) {
+            mWindow.show();
+            try {
+                mSystemService.setSessionWindowVisible(mToken, true);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed to notify session window shown", e);
+            }
+        }
+    }
+
     void ensureWindowHidden() {
         if (mWindow != null) {
             mWindow.hide();
+            try {
+                mSystemService.setSessionWindowVisible(mToken, false);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed to notify session window hidden", e);
+            }
         }
     }
 
@@ -1377,7 +1393,7 @@ public class VoiceInteractionSession implements KeyEvent.Callback, ComponentCall
             if (mWindowVisible) {
                 if (enabled) {
                     ensureWindowAdded();
-                    mWindow.show();
+                    showWindow();
                 } else {
                     ensureWindowHidden();
                 }

core/java/com/android/internal/app/IVoiceInteractionManagerService.aidl

@@ -284,4 +284,9 @@ interface IVoiceInteractionManagerService {
      * Stops to listen the status of visible activity.
      */
     void stopListeningVisibleActivityChanged(in IBinder token);
+
+    /**
+     * Notifies when the session window is shown or hidden.
+     */
+    void setSessionWindowVisible(in IBinder token, boolean visible);
 }

core/java/com/android/internal/app/IVoiceInteractionSessionListener.aidl

@@ -29,6 +29,11 @@
      */
     void onVoiceSessionHidden();
 
+    /**
+     * Called when a voice session window is shown/hidden.
+     */
+    void onVoiceSessionWindowVisibilityChanged(boolean visible);
+
     /**
      * Called when UI hints were received.
      */

packages/SystemUI/src/com/android/systemui/assist/AssistManager.java

@@ -186,6 +186,14 @@ public class AssistManager {
                                 AssistantSessionEvent.ASSISTANT_SESSION_CLOSE);
                     }
 
+                    @Override
+                    public void onVoiceSessionWindowVisibilityChanged(boolean visible)
+                            throws RemoteException {
+                        if (VERBOSE) {
+                            Log.v(TAG, "Window visibility changed: " + visible);
+                        }
+                    }
+
                     @Override
                     public void onSetUiHints(Bundle hints) {
                         if (VERBOSE) {

services/voiceinteraction/java/com/android/server/voiceinteraction/VoiceInteractionManagerService.java

@@ -1824,6 +1824,32 @@ public class VoiceInteractionManagerService extends SystemService {
             }
         }
 
+        public void setSessionWindowVisible(IBinder token, boolean visible) {
+            synchronized (this) {
+                if (mImpl == null) {
+                    Slog.w(TAG, "setSessionWindowVisible called without running voice interaction "
+                            + "service");
+                    return;
+                }
+                if (mImpl.mActiveSession == null || token != mImpl.mActiveSession.mToken) {
+                    Slog.w(TAG, "setSessionWindowVisible does not match active session");
+                    return;
+                }
+                final long caller = Binder.clearCallingIdentity();
+                try {
+                    mVoiceInteractionSessionListeners.broadcast(listener -> {
+                        try {
+                            listener.onVoiceSessionWindowVisibilityChanged(visible);
+                        } catch (RemoteException e) {
+                            Slog.e(TAG, "Error delivering window visibility event to listener.", e);
+                        }
+                    });
+                } finally {
+                    Binder.restoreCallingIdentity(caller);
+                }
+            }
+        }
+
         @Override
         public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
             if (!DumpUtils.checkDumpPermission(mContext, TAG, pw)) return;