[Remoting Android] Put Icons and Credits on Navigation Menu

remoting/android/java/src/org/chromium/chromoting/NavigationMenuAdapter.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.chromoting;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+
+/**
+ * Describes the appearance and behavior of the navigation menu. This also implements
+ * AdapterView.OnItemClickListener so it can be used as the ListView's onItemClickListener.
+ */
+public class NavigationMenuAdapter extends ArrayAdapter<NavigationMenuAdapter.NavigationMenuItem>
+        implements AdapterView.OnItemClickListener {
+    /**
+     * Defines a menu item.
+     */
+    public static class NavigationMenuItem {
+        private int mLayoutResourceId;
+        private Runnable mCallback;
+        public NavigationMenuItem(int layoutResourceId, Runnable callback) {
+            mLayoutResourceId = layoutResourceId;
+            mCallback = callback;
+        }
+    }
+
+    public NavigationMenuAdapter(Context context, NavigationMenuItem[] objects) {
+        super(context, -1, objects);
+    }
+
+    /** Generates a View corresponding to the particular navigation item. */
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        if (convertView == null) {
+            NavigationMenuItem item = getItem(position);
+            LayoutInflater inflater =
+                    (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+            convertView = inflater.inflate(item.mLayoutResourceId, null);
+        }
+        return convertView;
+    }
+
+
+    /** AdapterView.OnItemClickListener override. */
+    @Override
+    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+        getItem(position).mCallback.run();
+    }
+}