Disable launcher focus outline animation

Bug: 335424188
Test: Manual
Flag: ACONFIG com.android.launcher3.enable_focus_outline Teamfood
Change-Id: I31c63607c914da956d7c6139cc5089fe419f40e1

src/com/android/launcher3/PagedView.java

@@ -485,7 +485,10 @@ public abstract class PagedView<T extends View & PageIndicator> extends ViewGrou
         super.onVisibilityAggregated(isVisible);
     }
 
-    protected boolean isPageInTransition() {
+    /**
+     * Returns true if the page is in the middle of transition to another page
+     */
+    public boolean isPageInTransition() {
         return mIsPageInTransition;
     }
 

src/com/android/launcher3/keyboard/ItemFocusIndicatorHelper.java

@@ -246,7 +246,8 @@ public abstract class ItemFocusIndicatorHelper<T> implements AnimatorUpdateListe
 
     protected void setCurrentItem(T item) {
         mCurrentItem = item;
-        mShift = 0;
+        // Set it to end value directly to skip the animation for outline
+        mShift = Flags.enableFocusOutline() ? 1 : 0;
         mTargetItem = null;
     }
 

src/com/android/launcher3/keyboard/ViewGroupFocusHelper.java

@@ -19,6 +19,7 @@ package com.android.launcher3.keyboard;
 import android.graphics.Rect;
 import android.view.View;
 
+import com.android.launcher3.Flags;
 import com.android.launcher3.PagedView;
 
 /**
@@ -34,6 +35,28 @@ public class ViewGroupFocusHelper extends FocusIndicatorHelper {
         mContainer = container;
     }
 
+    @Override
+    protected boolean shouldDraw(View item) {
+        if (Flags.enableFocusOutline()) {
+            // Not draw outline in page transition because the outline just remains fully
+            // persistent during the transition and does not look smooth
+            return super.shouldDraw(item) && !isInPageTransition(item);
+        } else {
+            return super.shouldDraw(item);
+        }
+    }
+
+    private boolean isInPageTransition(View view) {
+        if (view == null || !(view.getParent() instanceof View)) {
+            return false;
+        }
+        boolean isInTransition = false;
+        if (view instanceof PagedView) {
+            isInTransition = ((PagedView<?>) view).isPageInTransition();
+        }
+        return isInTransition || isInPageTransition((View) view.getParent());
+    }
+
     @Override
     public void viewToRect(View v, Rect outRect) {
         // Using FocusedRect here allows views to provide their custom rect for drawing outline,