Allowing heads-up notifications now on the lock screen

In order to isolate notifications properly from their group
and in order to allow them to visually reorder, we now allow
heads up notifications on the lock screen.

Change-Id: I1d04a92e66ae92ecee4f8ee23b218c2b167dadd4
Test: existing tests pass
Test: add heads up on lockscreen
Test: heads up group child on lockscreen
Bug: 32442500

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

@@ -2219,7 +2219,9 @@ public abstract class BaseStatusBar extends SystemUI implements
                 entry.row.setVisibility(View.GONE);
             } else {
                 boolean wasGone = entry.row.getVisibility() == View.GONE;
-                entry.row.setVisibility(View.VISIBLE);
+                if (wasGone) {
+                    entry.row.setVisibility(View.VISIBLE);
+                }
                 if (!childNotification && !entry.row.isRemoved()) {
                     if (wasGone) {
                         // notify the scroller of a child addition
@@ -2450,9 +2452,7 @@ public abstract class BaseStatusBar extends SystemUI implements
             return false;
         }
 
-        boolean inUse = mPowerManager.isScreenOn()
-                && (!mStatusBarKeyguardViewManager.isShowing()
-                || mStatusBarKeyguardViewManager.isOccluded());
+        boolean inUse = mPowerManager.isScreenOn();
         try {
             inUse = inUse && !mDreamManager.isDreaming();
         } catch (RemoteException e) {
@@ -2491,7 +2491,9 @@ public abstract class BaseStatusBar extends SystemUI implements
                 if (DEBUG) Log.d(TAG, "No peeking: accessible fullscreen: " + sbn.getKey());
                 return false;
             } else {
-                return true;
+                // we only allow head-up on the lockscreen if it doesn't have a fullscreen intent
+                return !mStatusBarKeyguardViewManager.isShowing()
+                        || mStatusBarKeyguardViewManager.isOccluded();
             }
         }
 

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

@@ -1346,7 +1346,7 @@ public class ExpandableNotificationRow extends ActivatableNotificationView {
             return getMinHeight();
         } else if (mIsSummaryWithChildren && !mOnKeyguard) {
             return mChildrenContainer.getIntrinsicHeight();
-        } else if (mIsHeadsUp || mHeadsupDisappearRunning) {
+        } else if (!mOnKeyguard && (mIsHeadsUp || mHeadsupDisappearRunning)) {
             if (isPinned() || mHeadsupDisappearRunning) {
                 return getPinnedHeadsUpHeight(true /* atLeastMinHeight */);
             } else if (isExpanded()) {
@@ -1659,11 +1659,11 @@ public class ExpandableNotificationRow extends ActivatableNotificationView {
 
     @Override
     public int getMinHeight() {
-        if (mIsHeadsUp && mHeadsUpManager.isTrackingHeadsUp()) {
+        if (!mOnKeyguard && mIsHeadsUp && mHeadsUpManager.isTrackingHeadsUp()) {
                 return getPinnedHeadsUpHeight(false /* atLeastMinHeight */);
         } else if (mIsSummaryWithChildren && !isGroupExpanded() && !mShowingPublic) {
             return mChildrenContainer.getMinHeight();
-        } else if (mIsHeadsUp) {
+        } else if (!mOnKeyguard && mIsHeadsUp) {
             return mHeadsUpHeight;
         }
         NotificationContentView showingLayout = getShowingLayout();

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

@@ -4616,6 +4616,7 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
         }
         mState = state;
         mGroupManager.setStatusBarState(state);
+        mHeadsUpManager.setStatusBarState(state);
         mFalsingManager.setStatusBarState(state);
         mStatusBarWindowManager.setStatusBarState(state);
         mStackScroller.setStatusBarState(state);

packages/SystemUI/src/com/android/systemui/statusbar/policy/HeadsUpManager.java

@@ -34,6 +34,7 @@ import com.android.internal.logging.MetricsLogger;
 import com.android.systemui.R;
 import com.android.systemui.statusbar.ExpandableNotificationRow;
 import com.android.systemui.statusbar.NotificationData;
+import com.android.systemui.statusbar.StatusBarState;
 import com.android.systemui.statusbar.notification.VisualStabilityManager;
 import com.android.systemui.statusbar.phone.NotificationGroupManager;
 import com.android.systemui.statusbar.phone.PhoneStatusBar;
@@ -110,6 +111,7 @@ public class HeadsUpManager implements ViewTreeObserver.OnComputeInternalInsetsL
     private boolean mRemoteInputActive;
     private float mExpandedHeight;
     private VisualStabilityManager mVisualStabilityManager;
+    private int mStatusBarState;
 
     public HeadsUpManager(final Context context, View statusBarWindowView,
                           NotificationGroupManager groupManager) {
@@ -217,7 +219,8 @@ public class HeadsUpManager implements ViewTreeObserver.OnComputeInternalInsetsL
     }
 
     private boolean shouldHeadsUpBecomePinned(NotificationData.Entry entry) {
-        return !mIsExpanded || hasFullScreenIntent(entry);
+        return mStatusBarState != StatusBarState.KEYGUARD
+                && !mIsExpanded || hasFullScreenIntent(entry);
     }
 
     private boolean hasFullScreenIntent(NotificationData.Entry entry) {
@@ -624,6 +627,10 @@ public class HeadsUpManager implements ViewTreeObserver.OnComputeInternalInsetsL
         mVisualStabilityManager = visualStabilityManager;
     }
 
+    public void setStatusBarState(int statusBarState) {
+        mStatusBarState = statusBarState;
+    }
+
     /**
      * This represents a notification and how long it is in a heads up mode. It also manages its
      * lifecycle automatically when created.