Add support for highlighting menu items

chrome/android/java/src/org/chromium/chrome/browser/appmenu/AppMenu.java

 // Copyright 2011 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.appmenu;
 
 import android.animation.Animator;
 import android.animation.Animator.AnimatorListener;
 import android.animation.AnimatorSet;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
+import android.support.annotation.IdRes;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.Surface;
 import android.view.View;
 import android.view.View.MeasureSpec;
 import android.view.View.OnKeyListener;
 import android.view.ViewGroup;
 import android.widget.AdapterView;
@@ skipping 96 matching lines @@
         View view = list.getChildAt(index - startIndex);
         if (view == null) return;
 
         // Cause the Adapter to re-populate the View.
         list.getAdapter().getView(index, view, list);
     }
 
     /**
      * Creates and shows the app menu anchored to the specified view.
      *
-     * @param context The context of the AppMenu (ensure the proper theme is set on this context).
-     * @param anchorView The anchor {@link View} of the {@link ListPopupWindow}.
+     * @param context             The context of the AppMenu (ensure the proper theme is set on this
+     * context).
+     * @param anchorView          The anchor {@link View} of the {@link ListPopupWindow}.
      * @param isByPermanentButton Whether or not permanent hardware button triggered it. (oppose to
      *                            software button or keyboard).
-     * @param screenRotation Current device screen rotation.
+     * @param screenRotation      Current device screen rotation.
      * @param visibleDisplayFrame The display area rect in which AppMenu is supposed to fit in.
-     * @param screenHeight Current device screen height.
-     * @param footerResourceId The resource id for a view to add to the end of the menu list.
-     *                         Can be 0 if no such view is required.
+     * @param screenHeight        Current device screen height.
+     * @param footerResourceId    The resource id for a view to add to the end of the menu list. Can
+     *                            be 0 if no such view is required.
+     * @param highlightedItemId   The resource id of the menu item that should be highlighted.  Can
+     *                            be 0 if no item should be highlighted.
      */
     void show(Context context, View anchorView, boolean isByPermanentButton, int screenRotation,
-            Rect visibleDisplayFrame, int screenHeight, int footerResourceId) {
+            Rect visibleDisplayFrame, int screenHeight, @IdRes int footerResourceId,
+            @IdRes int highlightedItemId) {
         mPopup = new ListPopupWindow(context, null, android.R.attr.popupMenuStyle);
         mPopup.setModal(true);
         mPopup.setAnchorView(anchorView);
         mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED);
 
         int footerHeight = 0;
         if (footerResourceId != 0) {
             mPopup.setPromptPosition(ListPopupWindow.POSITION_PROMPT_BELOW);
             View promptView = LayoutInflater.from(context).inflate(footerResourceId, null);
             mPopup.setPromptView(promptView);
@@ skipping 61 matching lines @@
         Rect sizingPadding = new Rect(bgPadding);
         if (isByPermanentButton && originalBgDrawable != null) {
             Rect originalPadding = new Rect();
             originalBgDrawable.getPadding(originalPadding);
             sizingPadding.top = originalPadding.top;
             sizingPadding.bottom = originalPadding.bottom;
         }
 
         // A List adapter for visible items in the Menu. The first row is added as a header to the
         // list view.
-        mAdapter = new AppMenuAdapter(this, menuItems, LayoutInflater.from(context));
+        mAdapter = new AppMenuAdapter(
+                this, menuItems, LayoutInflater.from(context), highlightedItemId);
         mPopup.setAdapter(mAdapter);
 
         setMenuHeight(
                 menuItems.size(), visibleDisplayFrame, screenHeight, sizingPadding, footerHeight);
         setPopupOffset(mPopup, mCurrentScreenRotation, visibleDisplayFrame, sizingPadding);
         mPopup.setOnItemClickListener(this);
         mPopup.show();
         mPopup.getListView().setItemsCanFocus(true);
         mPopup.getListView().setOnKeyListener(this);
 
@@ skipping 193 matching lines @@
                 } else {
                     builder.with((Animator) animatorObject);
                 }
             }
         }
 
         mMenuItemEnterAnimator.addListener(mAnimationHistogramRecorder);
         mMenuItemEnterAnimator.start();
     }
 }