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/**
* Arara, the cool TeX automation tool
* Copyright (c) 2012 -- 2018, Paulo Roberto Massa Cereda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the project's author nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.github.cereda.arara.controller;
import ch.qos.cal10n.IMessageConveyor;
import ch.qos.cal10n.MessageConveyor;
import java.util.Locale;
/**
* Implements the language controller. This controller provides a singleton
* object that holds the application messages, easily available to all model
* and utilitary classes.
* @author Paulo Roberto Massa Cereda
* @version 4.0
* @since 4.0
*/
public class LanguageController {
// the controller itself, since we have a singleton;
// this is the reference instance, instantiated once
private static final LanguageController instance =
new LanguageController();
// the message conveyor helps us to get localized messages
// according to the provided locale
private IMessageConveyor conveyor;
/**
* Private constructor. The fallback language is set to English for all
* messages in arara.
*/
private LanguageController() {
conveyor = new MessageConveyor(new Locale("en"));
}
/**
* Initializes the class. This method actually does nothing, it just
* triggers the static attributions. Dirty, isn't it?
*/
public static void init() {
// quack, quack, quack!
}
/**
* Gets the singleton reference. Since this class is implemented as a
* singleton, you will get the same controller every single time.
* @return The language controller which holds the conveyor.
*/
public static LanguageController getInstance() {
return instance;
}
/**
* Sets the current locale. This method actually resets the language
* conveyor in order to use the new locale. It's quite simple.
* @param locale The new locale for localized messages through the language
* conveyor.
*/
public void setLocale(Locale locale) {
conveyor = new MessageConveyor(locale);
}
/**
* Gets the localized message indexed by the provided enumeration key,
* applying an array of objects as parameters. This method is a wrapper to
* the conveyor's method of the same name.
* @param <E> Enumeration type that represents the conveyor messages.
* @param key Key set in the provided enumeration type.
* @param parameters Array of objects to be used as parameters.
* @return A string containing a localized message indexed by the provided
* enumeration key and applied the array of objects as parameters.
*/
public <E extends Enum<?>> String getMessage(E key, Object... parameters) {
return conveyor.getMessage(key, parameters);
}
/**
* Gets the localized message indexed by the provided enumeration key. This
* method is a wrapper to the conveyor's method of the same name.
* @param <E> Enumeration type that represents the conveyor messages.
* @param key Key set in the provided enumeration type.
* @return A string containing a localized message indexed by the provided
* enumeration key.
*/
public <E extends Enum<?>> String getMessage(E key) {
return conveyor.getMessage(key);
}
}
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