LoadingDialog.java

/*
 * This file is part of FTB Launcher.
 *
 * Copyright © 2012-2016, FTB Launcher Contributors <https://github.com/Slowpoke101/FTBLaunch/>
 * FTB Launcher is 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 net.ftb.gui.dialogs;

import java.awt.Container;
import java.awt.Toolkit;
import java.util.concurrent.atomic.AtomicInteger;

import javax.swing.ImageIcon;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JProgressBar;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;

import net.ftb.locale.I18N;
import net.ftb.log.Logger;

@SuppressWarnings("serial")
public class LoadingDialog extends JDialog
{
	private JLabel loadStatusLbl;
	private JLabel splashLbl;
	private JProgressBar progressBar;
	private static LoadingDialog instance;

	private static int BAR_SIZE = 200;
	private static int COUNT = 7;
	private static int INCREMENT = BAR_SIZE / COUNT;
	private static AtomicInteger progress = new AtomicInteger(0);

	public LoadingDialog ()
	{
		super();
		setupGui();
		instance = this;
	}

	public static void advance (final String text)
	{
		Logger.logInfo(text);
		final int newValue = progress.getAndAdd(INCREMENT) + INCREMENT;
		if (instance != null)
		{
			if (SwingUtilities.isEventDispatchThread())
			{
				doAdvance(text, newValue);
			}
			else
			{
				SwingUtilities.invokeLater(new Runnable()
				{
					@Override
					public void run ()
					{
						doAdvance(text, newValue);
					}
				});
			}
		}
	}

	private static void doAdvance (String text, int newValue)
	{
		instance.progressBar.setValue(newValue);
		instance.loadStatusLbl.setText(text);
		instance.repaint();
	}

	private void setupGui ()
	{
		setIconImage(Toolkit.getDefaultToolkit().getImage(this.getClass().getResource("/image/logo_ftb.png")));
		setTitle(I18N.getLocaleString("TeamNT Launcher"));
		setSize(300, 260);
		setLayout(null);
		setLocationRelativeTo(null);
		setResizable(false);
		setUndecorated(true);
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

		Container panel = getContentPane();

		splashLbl = new JLabel(new ImageIcon(this.getClass().getResource("/image/logo_ftb_large.png")));
		splashLbl.setBounds(0, 20, 300, 160);

		loadStatusLbl = new JLabel("Loading...");
		loadStatusLbl.setHorizontalAlignment(SwingConstants.CENTER);
		loadStatusLbl.setBounds(0, 200, 300, 20);

		progressBar = new JProgressBar(0, BAR_SIZE);
		progressBar.setBounds(10, 230, 280, 20);

		panel.add(splashLbl);
		panel.add(loadStatusLbl);
		panel.add(progressBar);
	}
}