AmbientIndication: Move into container

This allows fixing the following bugs:
- ambient indication should be hidden outside keyguard
- ambient indication should animate with the unlock hint
- ambient indication should fade out when unlocking

Fixes: 38289189
Test: observe that the things above are working correctly
Change-Id: I34aff69bb5621a3f12c25e87eac6a89c8c7e2165

packages/SystemUI/res/layout/status_bar_expanded.xml

@@ -56,7 +56,8 @@
             android:layout_gravity="@integer/notification_panel_layout_gravity"
             android:layout_marginBottom="@dimen/close_handle_underlap" />
 
-        <include layout="@layout/ambient_indication" />
+        <include layout="@layout/ambient_indication"
+            android:id="@+id/ambient_indication_container" />
 
         <ViewStub
             android:id="@+id/keyguard_user_switcher"

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

@@ -1672,6 +1672,10 @@ public class NotificationPanelView extends PanelView implements
         mKeyguardBottomArea.setImportantForAccessibility(alpha == 0f
                 ? IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS
                 : IMPORTANT_FOR_ACCESSIBILITY_AUTO);
+        View ambientIndicationContainer = mStatusBar.getAmbientIndicationContainer();
+        if (ambientIndicationContainer != null) {
+            ambientIndicationContainer.setAlpha(alpha);
+        }
     }
 
     private float getNotificationsTopY() {

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

@@ -28,6 +28,7 @@ import android.util.AttributeSet;
 import android.util.Log;
 import android.view.InputDevice;
 import android.view.MotionEvent;
+import android.view.View;
 import android.view.ViewConfiguration;
 import android.view.ViewTreeObserver;
 import android.view.animation.Interpolator;
@@ -1071,21 +1072,25 @@ public abstract class PanelView extends FrameLayout {
         });
         animator.start();
         mHeightAnimator = animator;
-        mKeyguardBottomArea.getIndicationArea().animate()
-                .translationY(-mHintDistance)
-                .setDuration(250)
-                .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
-                .withEndAction(new Runnable() {
-                    @Override
-                    public void run() {
-                        mKeyguardBottomArea.getIndicationArea().animate()
-                                .translationY(0)
-                                .setDuration(450)
-                                .setInterpolator(mBounceInterpolator)
-                                .start();
-                    }
-                })
-                .start();
+
+        View[] viewsToAnimate = {
+                mKeyguardBottomArea.getIndicationArea(),
+                mStatusBar.getAmbientIndicationContainer()};
+        for (View v : viewsToAnimate) {
+            if (v == null) {
+                continue;
+            }
+            v.animate()
+                    .translationY(-mHintDistance)
+                    .setDuration(250)
+                    .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
+                    .withEndAction(() -> v.animate()
+                            .translationY(0)
+                            .setDuration(450)
+                            .setInterpolator(mBounceInterpolator)
+                            .start())
+                    .start();
+        }
     }
 
     /**

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

@@ -36,6 +36,7 @@ import android.R.style;
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.app.ActivityManager;
 import android.app.ActivityManager.StackId;
 import android.app.ActivityOptions;
@@ -730,6 +731,7 @@ public class StatusBar extends SystemUI implements DemoMode,
     private boolean mReinflateNotificationsOnUserSwitched;
     private HashMap<String, Entry> mPendingNotifications = new HashMap<>();
     private boolean mClearAllEnabled;
+    @Nullable private View mAmbientIndicationContainer;
 
     private void recycleAllVisibilityObjects(ArraySet<NotificationVisibility> array) {
         final int N = array.size();
@@ -1081,6 +1083,9 @@ public class StatusBar extends SystemUI implements DemoMode,
                 mKeyguardBottomArea.getLockIcon());
         mKeyguardBottomArea.setKeyguardIndicationController(mKeyguardIndicationController);
 
+        mAmbientIndicationContainer = mStatusBarWindow.findViewById(
+                R.id.ambient_indication_container);
+
         // set the initial view visibility
         setAreThereNotifications();
 
@@ -2785,6 +2790,11 @@ public class StatusBar extends SystemUI implements DemoMode,
         return mKeyguardIndicationController;
     }
 
+    @Nullable
+    public View getAmbientIndicationContainer() {
+        return mAmbientIndicationContainer;
+    }
+
     /**
      * All changes to the status bar and notifications funnel through here and are batched.
      */
@@ -4393,6 +4403,9 @@ public class StatusBar extends SystemUI implements DemoMode,
                 mKeyguardUserSwitcher.setKeyguard(true, fromShadeLocked);
             }
             mStatusBarView.removePendingHideExpandedRunnables();
+            if (mAmbientIndicationContainer != null) {
+                mAmbientIndicationContainer.setVisibility(View.VISIBLE);
+            }
         } else {
             mKeyguardIndicationController.setVisible(false);
             if (mKeyguardUserSwitcher != null) {
@@ -4401,6 +4414,9 @@ public class StatusBar extends SystemUI implements DemoMode,
                         mState == StatusBarState.SHADE_LOCKED ||
                         fromShadeLocked);
             }
+            if (mAmbientIndicationContainer != null) {
+                mAmbientIndicationContainer.setVisibility(View.INVISIBLE);
+            }
         }
         if (mState == StatusBarState.KEYGUARD || mState == StatusBarState.SHADE_LOCKED) {
             mScrimController.setKeyguardShowing(true);