Hide scrollbar in Awesome bar suggestion list if all the content fits. (#1701)

Author: MortimerGoro

app/src/common/shared/org/mozilla/vrbrowser/ui/views/CustomListView.java

@@ -45,18 +45,18 @@ public boolean isInTouchMode() {
     protected void onLayout(boolean changed, int l, int t, int r, int b) {
         super.onLayout(changed, l, t, r, b);
 
-        boolean scrollVisible = false;
-
-        if (getChildCount() > 0) {
-            View first = getChildAt(0);
-            View last = getChildAt(getChildCount() - 1);
-            if (first.getTop() < 0 || last.getBottom() > getHeight()) {
-                scrollVisible = true;
-            }
+        boolean fits = getCount() == 0;
+
+        // Check if all the items fit on the ListView
+        int last = getLastVisiblePosition();
+        int first = getFirstVisiblePosition();
+        if (!fits && first == 0 && last == getCount() - 1) {
+            fits = getChildAt(first).getTop() >= 0 && getChildAt(last).getBottom() <= getHeight();
         }
 
-        setVerticalScrollBarEnabled(scrollVisible);
-        setFastScrollAlwaysVisible(scrollVisible);
+        // Hide scrollbar is all item fit.
+        setVerticalScrollBarEnabled(!fits);
+        setFastScrollAlwaysVisible(!fits);
     }
 
 

app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/SuggestionsWidget.java

@@ -23,13 +23,14 @@
 import org.mozilla.gecko.util.ThreadUtils;
 import org.mozilla.vrbrowser.R;
 import org.mozilla.vrbrowser.audio.AudioEngine;
+import org.mozilla.vrbrowser.ui.views.CustomListView;
 
 import java.util.ArrayList;
 import java.util.List;
 
 public class SuggestionsWidget extends UIWidget implements WidgetManagerDelegate.FocusChangeListener {
 
-    private ListView mList;
+    private CustomListView mList;
     private SuggestionsAdapter mAdapter;
     private Animation mScaleUpAnimation;
     private Animation mScaleDownAnimation;

app/src/main/res/layout/list_popup_window.xml

@@ -4,7 +4,7 @@
     android:layout_height="match_parent"
     android:layout_width="match_parent">
 
-    <ListView
+    <org.mozilla.vrbrowser.ui.views.CustomListView
         android:id="@+id/list"
         android:layout_width="match_parent"
         android:layout_height="match_parent"