Show back button while RemoteInput is active on keyguard

Bug: 22452379
Change-Id: Iea1cdb885698c717b98904453bf14e2bdd7d7562

packages/SystemUI/src/com/android/systemui/statusbar/RemoteInputController.java

@@ -30,11 +30,11 @@ import java.util.ArrayList;
 public class RemoteInputController {
 
     private final ArrayList<WeakReference<NotificationData.Entry>> mRemoteInputs = new ArrayList<>();
-    private final StatusBarWindowManager mStatusBarWindowManager;
+    private final ArrayList<Callback> mCallbacks = new ArrayList<>(3);
     private final HeadsUpManager mHeadsUpManager;
 
     public RemoteInputController(StatusBarWindowManager sbwm, HeadsUpManager headsUpManager) {
-        mStatusBarWindowManager = sbwm;
+        addCallback(sbwm);
         mHeadsUpManager = headsUpManager;
     }
 
@@ -59,8 +59,12 @@ public class RemoteInputController {
     }
 
     private void apply(NotificationData.Entry entry) {
-        mStatusBarWindowManager.setRemoteInputActive(isRemoteInputActive());
         mHeadsUpManager.setRemoteInputActive(entry, isRemoteInputActive(entry));
+        boolean remoteInputActive = isRemoteInputActive();
+        int N = mCallbacks.size();
+        for (int i = 0; i < N; i++) {
+            mCallbacks.get(i).onRemoteInputActive(remoteInputActive);
+        }
     }
 
     /**
@@ -99,4 +103,12 @@ public class RemoteInputController {
     }
 
 
+    public void addCallback(Callback callback) {
+        Preconditions.checkNotNull(callback);
+        mCallbacks.add(callback);
+    }
+
+    public interface Callback {
+        void onRemoteInputActive(boolean active);
+    }
 }

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

@@ -1086,6 +1086,7 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
         mKeyguardIndicationController.setStatusBarKeyguardViewManager(
                 mStatusBarKeyguardViewManager);
         mFingerprintUnlockController.setStatusBarKeyguardViewManager(mStatusBarKeyguardViewManager);
+        mRemoteInputController.addCallback(mStatusBarKeyguardViewManager);
         mKeyguardViewMediatorCallback = keyguardViewMediator.getViewMediatorCallback();
     }
 

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java

@@ -31,6 +31,7 @@ import com.android.internal.widget.LockPatternUtils;
 import com.android.keyguard.KeyguardUpdateMonitor;
 import com.android.keyguard.ViewMediatorCallback;
 import com.android.systemui.statusbar.CommandQueue;
+import com.android.systemui.statusbar.RemoteInputController;
 
 import static com.android.keyguard.KeyguardHostView.OnDismissAction;
 
@@ -40,7 +41,7 @@ import static com.android.keyguard.KeyguardHostView.OnDismissAction;
  * which is in turn, reported to this class by the current
  * {@link com.android.keyguard.KeyguardViewBase}.
  */
-public class StatusBarKeyguardViewManager {
+public class StatusBarKeyguardViewManager implements RemoteInputController.Callback {
 
     // When hiding the Keyguard with timing supplied from WindowManager, better be early than late.
     private static final long HIDE_TIMING_CORRECTION_MS = -3 * 16;
@@ -69,12 +70,15 @@ public class StatusBarKeyguardViewManager {
     private KeyguardBouncer mBouncer;
     private boolean mShowing;
     private boolean mOccluded;
+    private boolean mRemoteInputActive;
 
     private boolean mFirstUpdate = true;
     private boolean mLastShowing;
     private boolean mLastOccluded;
     private boolean mLastBouncerShowing;
     private boolean mLastBouncerDismissible;
+    private boolean mLastRemoteInputActive;
+
     private OnDismissAction mAfterKeyguardGoneAction;
     private boolean mDeviceWillWakeUp;
     private boolean mDeferScrimFadeOut;
@@ -199,6 +203,12 @@ public class StatusBarKeyguardViewManager {
         mPhoneStatusBar.onScreenTurnedOn();
     }
 
+    @Override
+    public void onRemoteInputActive(boolean active) {
+        mRemoteInputActive = active;
+        updateStates();
+    }
+
     public void onScreenTurnedOff() {
         mScreenTurnedOn = false;
     }
@@ -429,18 +439,21 @@ public class StatusBarKeyguardViewManager {
         boolean occluded = mOccluded;
         boolean bouncerShowing = mBouncer.isShowing();
         boolean bouncerDismissible = !mBouncer.isFullscreenBouncer();
+        boolean remoteInputActive = mRemoteInputActive;
 
-        if ((bouncerDismissible || !showing) != (mLastBouncerDismissible || !mLastShowing)
+        if ((bouncerDismissible || !showing || remoteInputActive) !=
+                (mLastBouncerDismissible || !mLastShowing || mLastRemoteInputActive)
                 || mFirstUpdate) {
-            if (bouncerDismissible || !showing) {
+            if (bouncerDismissible || !showing || remoteInputActive) {
                 mContainer.setSystemUiVisibility(vis & ~View.STATUS_BAR_DISABLE_BACK);
             } else {
                 mContainer.setSystemUiVisibility(vis | View.STATUS_BAR_DISABLE_BACK);
             }
         }
 
-        boolean navBarVisible = (!(showing && !occluded) || bouncerShowing);
-        boolean lastNavBarVisible = (!(mLastShowing && !mLastOccluded) || mLastBouncerShowing);
+        boolean navBarVisible = (!(showing && !occluded) || bouncerShowing || remoteInputActive);
+        boolean lastNavBarVisible = (!(mLastShowing && !mLastOccluded) || mLastBouncerShowing
+                || mLastRemoteInputActive);
         if (navBarVisible != lastNavBarVisible || mFirstUpdate) {
             if (mPhoneStatusBar.getNavigationBarView() != null) {
                 if (navBarVisible) {
@@ -477,6 +490,7 @@ public class StatusBarKeyguardViewManager {
         mLastOccluded = occluded;
         mLastBouncerShowing = bouncerShowing;
         mLastBouncerDismissible = bouncerDismissible;
+        mLastRemoteInputActive = remoteInputActive;
 
         mPhoneStatusBar.onKeyguardViewManagerStatesUpdated();
     }

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarWindowManager.java

@@ -30,6 +30,7 @@ import android.view.WindowManager;
 import com.android.keyguard.R;
 import com.android.systemui.keyguard.KeyguardViewMediator;
 import com.android.systemui.statusbar.BaseStatusBar;
+import com.android.systemui.statusbar.RemoteInputController;
 import com.android.systemui.statusbar.StatusBarState;
 
 import java.io.FileDescriptor;
@@ -39,7 +40,7 @@ import java.lang.reflect.Field;
 /**
  * Encapsulates all logic for the status bar window state management.
  */
-public class StatusBarWindowManager {
+public class StatusBarWindowManager implements RemoteInputController.Callback {
 
     private final Context mContext;
     private final WindowManager mWindowManager;
@@ -292,7 +293,8 @@ public class StatusBarWindowManager {
         apply(mCurrentState);
     }
 
-    public void setRemoteInputActive(boolean remoteInputActive) {
+    @Override
+    public void onRemoteInputActive(boolean remoteInputActive) {
         mCurrentState.remoteInputActive = remoteInputActive;
         apply(mCurrentState);
     }