From a3a84d7fb1d87e77ec2cbffdbe6978e62d5d3ab7 Mon Sep 17 00:00:00 2001
From: Artur Signell <artur@vaadin.com>
Date: Tue, 6 Sep 2016 22:10:12 +0300
Subject: [PATCH] Remove old Firefox bug workaround for which there is no test

Change-Id: I97efacde11852a08ccc799e0aef4d6e23484f522
---
 .../widget/escalator/PositionFunction.java    | 19 -----------
 .../com/vaadin/client/widgets/Escalator.java  | 33 +------------------
 2 files changed, 1 insertion(+), 51 deletions(-)

diff --git a/client/src/main/java/com/vaadin/client/widget/escalator/PositionFunction.java b/client/src/main/java/com/vaadin/client/widget/escalator/PositionFunction.java
index b96d57c7de..91335fb635 100644
--- a/client/src/main/java/com/vaadin/client/widget/escalator/PositionFunction.java
+++ b/client/src/main/java/com/vaadin/client/widget/escalator/PositionFunction.java
@@ -17,7 +17,6 @@
 package com.vaadin.client.widget.escalator;
 
 import com.google.gwt.dom.client.Element;
-import com.google.gwt.dom.client.Style.Unit;
 
 /**
  * A functional interface that can be used for positioning elements in the DOM.
@@ -77,24 +76,6 @@ public interface PositionFunction {
         }
     }
 
-    /**
-     * A position function using "left: x" and "top: y" to position elements in
-     * the DOM.
-     */
-    public static class AbsolutePosition implements PositionFunction {
-        @Override
-        public void set(Element e, double x, double y) {
-            e.getStyle().setLeft(x, Unit.PX);
-            e.getStyle().setTop(y, Unit.PX);
-        }
-
-        @Override
-        public void reset(Element e) {
-            e.getStyle().clearLeft();
-            e.getStyle().clearTop();
-        }
-    }
-
     /**
      * Position an element in an (x,y) coordinate system in the DOM.
      *
diff --git a/client/src/main/java/com/vaadin/client/widgets/Escalator.java b/client/src/main/java/com/vaadin/client/widgets/Escalator.java
index 564496e00a..77afccdb30 100644
--- a/client/src/main/java/com/vaadin/client/widgets/Escalator.java
+++ b/client/src/main/java/com/vaadin/client/widgets/Escalator.java
@@ -71,7 +71,6 @@ import com.vaadin.client.widget.escalator.EscalatorUpdater;
 import com.vaadin.client.widget.escalator.FlyweightCell;
 import com.vaadin.client.widget.escalator.FlyweightRow;
 import com.vaadin.client.widget.escalator.PositionFunction;
-import com.vaadin.client.widget.escalator.PositionFunction.AbsolutePosition;
 import com.vaadin.client.widget.escalator.PositionFunction.Translate3DPosition;
 import com.vaadin.client.widget.escalator.PositionFunction.TranslatePosition;
 import com.vaadin.client.widget.escalator.PositionFunction.WebkitTranslate3DPosition;
@@ -846,26 +845,7 @@ public class Escalator extends Widget
                 }
 
                 position.set(headElem, -scrollLeft, 0);
-
-                /*
-                 * TODO [[optimize]]: cache this value in case the instanceof
-                 * check has undesirable overhead. This could also be a
-                 * candidate for some deferred binding magic so that e.g.
-                 * AbsolutePosition is not even considered in permutations that
-                 * we know support something better. That would let the compiler
-                 * completely remove the entire condition since it knows that
-                 * the if will never be true.
-                 */
-                if (position instanceof AbsolutePosition) {
-                    /*
-                     * we don't want to put "top: 0" on the footer, since it'll
-                     * render wrong, as we already have
-                     * "bottom: $footer-height".
-                     */
-                    footElem.getStyle().setLeft(-scrollLeft, Unit.PX);
-                } else {
-                    position.set(footElem, -scrollLeft, 0);
-                }
+                position.set(footElem, -scrollLeft, 0);
 
                 lastScrollLeft = scrollLeft;
             }
@@ -5757,15 +5737,6 @@ public class Escalator extends Widget
     }
 
     private void detectAndApplyPositionFunction() {
-        /*
-         * firefox has a bug in its translate operation, showing white space
-         * when adjusting the scrollbar in BodyRowContainer.paintInsertRows
-         */
-        if (Window.Navigator.getUserAgent().contains("Firefox")) {
-            position = new AbsolutePosition();
-            return;
-        }
-
         final Style docStyle = Document.get().getBody().getStyle();
         if (hasProperty(docStyle, "transform")) {
             if (hasProperty(docStyle, "transformStyle")) {
@@ -5775,8 +5746,6 @@ public class Escalator extends Widget
             }
         } else if (hasProperty(docStyle, "webkitTransform")) {
             position = new WebkitTranslate3DPosition();
-        } else {
-            position = new AbsolutePosition();
         }
     }
 
-- 
2.39.5