[Home] Show the app menu icons as a footer

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.support.annotation.Nullable;
 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 26 matching lines @@
     private final Menu mMenu;
     private final int mItemRowHeight;
     private final int mItemDividerHeight;
     private final int mVerticalFadeDistance;
     private final int mNegativeSoftwareVerticalOffset;
     private final int[] mTempLocation;
 
     private ListPopupWindow mPopup;
     private AppMenuAdapter mAdapter;
     private AppMenuHandler mHandler;
+    private View mPromptView;
     private int mCurrentScreenRotation = -1;
     private boolean mIsByPermanentButton;
     private AnimatorSet mMenuItemEnterAnimator;
     private AnimatorListener mAnimationHistogramRecorder = AnimationFrameTimeHistogram
             .getAnimatorRecorder("WrenchMenu.OpeningAnimationFrameTimes");
 
     /**
      * Creates and sets up the App Menu.
      * @param menu Original menu created by the framework.
      * @param itemRowHeight Desired height for each app menu row.
@@ skipping 80 matching lines @@
             Rect visibleDisplayFrame, int screenHeight, @IdRes int footerResourceId,
             Integer 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);
+            mPromptView = LayoutInflater.from(context).inflate(footerResourceId, null);
+            mPopup.setPromptView(mPromptView);
             int measureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
-            promptView.measure(measureSpec, measureSpec);
-            footerHeight = promptView.getMeasuredHeight();
+            mPromptView.measure(measureSpec, measureSpec);
+            footerHeight = mPromptView.getMeasuredHeight();
+        } else {
+            mPromptView = null;
         }
         mPopup.setOnDismissListener(new OnDismissListener() {
             @Override
             public void onDismiss() {
                 if (mPopup.getAnchorView() instanceof ImageButton) {
                     ((ImageButton) mPopup.getAnchorView()).setSelected(false);
                 }
 
                 if (mMenuItemEnterAnimator != null) mMenuItemEnterAnimator.cancel();
 
@@ skipping 80 matching lines @@
                 @Override
                 public void onLayoutChange(View v, int left, int top, int right, int bottom,
                         int oldLeft, int oldTop, int oldRight, int oldBottom) {
                     mPopup.getListView().removeOnLayoutChangeListener(this);
                     runMenuItemEnterAnimations();
                 }
             });
         }
     }
 
+    /**
+     * @return The prompt view for the menu or null if one has not been set.
+     */
+    @Nullable
+    public View getPromptView() {
+        return mPromptView;
+    }
+
     private boolean isAnchorAtBottom(View anchorView, Rect visibleDisplayFrame) {
         anchorView.getLocationOnScreen(mTempLocation);
         return (mTempLocation[1] + anchorView.getHeight()) == visibleDisplayFrame.bottom;
     }
 
     private void setPopupOffset(
             ListPopupWindow popup, int screenRotation, Rect appRect, Rect padding) {
         popup.getAnchorView().getLocationInWindow(mTempLocation);
         int anchorViewX = mTempLocation[0];
         int anchorHeight = popup.getAnchorView().getHeight();
@@ skipping 166 matching lines @@
                 } else {
                     builder.with((Animator) animatorObject);
                 }
             }
         }
 
         mMenuItemEnterAnimator.addListener(mAnimationHistogramRecorder);
         mMenuItemEnterAnimator.start();
     }
 }