chrome/android: Push EventFilters into the Layout implementations.

chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/ToolbarSwipeLayout.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.compositor.layouts;
 
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.RectF;
 import android.view.animation.DecelerateInterpolator;
 import android.view.animation.Interpolator;
 
 import org.chromium.base.metrics.RecordUserAction;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.compositor.LayerTitleCache;
 import org.chromium.chrome.browser.compositor.layouts.ChromeAnimation.Animatable;
 import org.chromium.chrome.browser.compositor.layouts.components.LayoutTab;
 import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager;
+import org.chromium.chrome.browser.compositor.layouts.eventfilter.BlackHoleEventFilter;
 import org.chromium.chrome.browser.compositor.layouts.eventfilter.EventFilter;
 import org.chromium.chrome.browser.compositor.layouts.eventfilter.ScrollDirection;
 import org.chromium.chrome.browser.compositor.scene_layer.SceneLayer;
 import org.chromium.chrome.browser.compositor.scene_layer.TabListSceneLayer;
 import org.chromium.chrome.browser.fullscreen.ChromeFullscreenManager;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabModel;
 import org.chromium.chrome.browser.util.MathUtils;
 import org.chromium.ui.base.LocalizationUtils;
 import org.chromium.ui.resources.ResourceManager;
@@ skipping 33 matching lines @@
 
     // Offsets are in pixels [0, width].
     private float mOffsetStart;
     private float mOffset;
     private float mOffsetTarget;
 
     // These will be set from dimens.xml
     private final float mSpaceBetweenTabs;
     private final float mCommitDistanceFromEdge;
 
+    private final BlackHoleEventFilter mBlackHoleEventFilter;
     private final TabListSceneLayer mSceneLayer;
 
     private final Interpolator mEdgeInterpolator = new DecelerateInterpolator();
 
     /**
      * @param context             The current Android's context.
      * @param updateHost          The {@link LayoutUpdateHost} view for this layout.
      * @param renderHost          The {@link LayoutRenderHost} view for this layout.
      * @param eventFilter         The {@link EventFilter} that is needed for this view.
      */
-    public ToolbarSwipeLayout(Context context, LayoutUpdateHost updateHost,
-            LayoutRenderHost renderHost, EventFilter eventFilter) {
-        super(context, updateHost, renderHost, eventFilter);
+    public ToolbarSwipeLayout(
+            Context context, LayoutUpdateHost updateHost, LayoutRenderHost renderHost) {
+        super(context, updateHost, renderHost);
+        mBlackHoleEventFilter = new BlackHoleEventFilter(context);
         Resources res = context.getResources();
         final float pxToDp = 1.0f / res.getDisplayMetrics().density;
         mCommitDistanceFromEdge = res.getDimension(R.dimen.toolbar_swipe_commit_distance) * pxToDp;
         mSpaceBetweenTabs = res.getDimension(R.dimen.toolbar_swipe_space_between_tabs) * pxToDp;
         mSceneLayer = new TabListSceneLayer();
     }
 
     /**
      * @param moveToolbar Whether or not swiping this layout should also move the toolbar as well as
      *                    the content.
@@ skipping 253 matching lines @@
         if (prop == Property.OFFSET) {
             mOffset = value;
             mOffsetTarget = mOffset;
         }
     }
 
     @Override
     public void onPropertyAnimationFinished(Property prop) {}
 
     @Override
+    protected EventFilter getEventFilter() {
+        return mBlackHoleEventFilter;
+    }
+
+    @Override
     protected SceneLayer getSceneLayer() {
         return mSceneLayer;
     }
 
     @Override
     protected void updateSceneLayer(RectF viewport, RectF contentViewport,
             LayerTitleCache layerTitleCache, TabContentManager tabContentManager,
             ResourceManager resourceManager, ChromeFullscreenManager fullscreenManager) {
         super.updateSceneLayer(viewport, contentViewport, layerTitleCache, tabContentManager,
                 resourceManager, fullscreenManager);
         assert mSceneLayer != null;
         // contentViewport is intentionally passed for both parameters below.
         mSceneLayer.pushLayers(getContext(), contentViewport, contentViewport, this,
                 layerTitleCache, tabContentManager, resourceManager, fullscreenManager);
     }
 }