[List UI Unification] Basic list unification for phones

chrome/android/java/src/org/chromium/chrome/browser/history/HistoryItemView.java

 // Copyright 2016 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.history;
 
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.drawable.BitmapDrawable;
 import android.support.graphics.drawable.VectorDrawableCompat;
 import android.support.v4.graphics.drawable.RoundedBitmapDrawable;
 import android.support.v4.graphics.drawable.RoundedBitmapDrawableFactory;
 import android.util.AttributeSet;
 import android.view.View;
 import android.widget.ImageView;
 import android.widget.TextView;
 
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.favicon.LargeIconBridge.LargeIconCallback;
 import org.chromium.chrome.browser.preferences.PrefServiceBridge;
 import org.chromium.chrome.browser.widget.RoundedIconGenerator;
 import org.chromium.chrome.browser.widget.TintedImageButton;
 import org.chromium.chrome.browser.widget.displaystyle.MarginResizer;
 import org.chromium.chrome.browser.widget.selection.SelectableItemView;
+import org.chromium.chrome.browser.widget.selection.SelectableListLayout;
 
 /**
  * The SelectableItemView for items displayed in the browsing history UI.
  */
 public class HistoryItemView extends SelectableItemView<HistoryItem> implements LargeIconCallback {
     private TextView mTitle;
     private TextView mDomain;
     private TintedImageButton mRemoveButton;
     private ImageView mIconImageView;
     private VectorDrawableCompat mBlockedVisitDrawable;
@@ skipping 84 matching lines @@
      */
     public void setHistoryManager(HistoryManager manager) {
         getItem().setHistoryManager(manager);
         if (mHistoryManager == manager) return;
 
         mHistoryManager = manager;
         if (!getItem().wasBlockedVisit()) requestIcon();
 
         MarginResizer.createWithViewAdapter(this,
                 mHistoryManager.getSelectableListLayout().getUiConfig(),
-                mHistoryManager.getDefaultLateralListItemMarginPx(), 0);
+                SelectableListLayout.getDefaultListItemLateralMarginPx(getResources()), 0);
     }
 
     /**
      * Removes the item associated with this view.
      */
     public void remove() {
         // If the remove button is double tapped, this method may be called twice.
         if (getItem() == null || mIsItemRemoved) return;
 
         mIsItemRemoved = true;
@@ skipping 55 matching lines @@
         int endPadding = removeButtonVisibility == View.GONE ? mEndPadding : 0;
         ApiCompatibilityUtils.setPaddingRelative(mContentView,
                 ApiCompatibilityUtils.getPaddingStart(mContentView),
                 mContentView.getPaddingTop(), endPadding, mContentView.getPaddingBottom());
     }
 
     /**
      * Sets the background resource for this view using the item's positioning in its group.
      */
     public void setBackgroundResourceForGroupPosition() {
-        int backgroundResource;
-
-        boolean isLastInGroup =  getItem().isLastInGroup();
-        boolean isFirstInGroup = getItem().isFirstInGroup();
-        if (!isLastInGroup && !isFirstInGroup) {
-            backgroundResource = R.drawable.list_item_middle;
-        } else if (!isLastInGroup) {
-            backgroundResource = R.drawable.list_item_top;
-        } else if (!isFirstInGroup) {
-            backgroundResource = R.drawable.list_item_bottom;
-        } else {
-            backgroundResource = R.drawable.list_item_single;
-        }
-
-        setBackgroundResource(backgroundResource);
+        setBackgroundResourceForGroupPosition(
+                getItem().isFirstInGroup(), getItem().isLastInGroup());
     }
 }