ToolsCountries.java

/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.motorola.studio.android.common.utilities.ui;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import java.util.MissingResourceException;
import java.util.ResourceBundle;

/**
 * Class to handle the countries.
 */
public class ToolsCountries
{

    /**
     * The shared instance.
     */
    private static ToolsCountries instance = null;

    /**
     * Bundle to get countries from module (properties file).
     */
    private final ResourceBundle bundle;

    /**
     * Default constructor.
     */
    private ToolsCountries()
    {
        this.bundle = ResourceBundle.getBundle("countries"); //$NON-NLS-1$
    }

    /**
     * Returns the single instance.
     * 
     * @return The singleton instance.
     */
    public static synchronized ToolsCountries getInstance()
    {
        if (instance == null)
        {
            instance = new ToolsCountries();
        }
        return instance;
    }

    /**
     * Returns all countries.
     * 
     * @return All countries.
     */
    public List<Country> getCountries()
    {
        List<Country> toReturn = new ArrayList<Country>();

        try
        {
            Enumeration<String> keys = bundle.getKeys();
            while (keys.hasMoreElements())
            {
                String countryCode = keys.nextElement();
                String countryName = bundle.getString(countryCode);
                toReturn.add(new Country(countryCode, countryName));
            }

            Collections.sort(toReturn);
        }
        catch (MissingResourceException e)
        {
            toReturn = new ArrayList<Country>();
        }

        return toReturn;
    }

}