/*******************************************************************************
 * Copyright (c) 2014 Jeff Martin.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public
 * License v3.0 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 * 
 * Contributors:
 *     Jeff Martin - initial API and implementation
 ******************************************************************************/
package cuchaz.enigma.gui;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;

import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.WindowConstants;

import cuchaz.enigma.Constants;
import cuchaz.enigma.Deobfuscator.ProgressListener;

public class ProgressDialog implements ProgressListener, AutoCloseable
{
	private JFrame m_frame;
	private JLabel m_title;
	private JLabel m_text;
	private JProgressBar m_progress;
	
	public ProgressDialog( JFrame parent )
	{
		// init frame
		m_frame = new JFrame( Constants.Name + " - Operation in progress" );
		final Container pane = m_frame.getContentPane();
		FlowLayout layout = new FlowLayout();
		layout.setAlignment( FlowLayout.LEFT );
		pane.setLayout( layout );
		
		m_title = new JLabel();
		pane.add( m_title );
		
		// set up the progress bar
		JPanel panel = new JPanel();
		pane.add( panel );
		panel.setLayout( new BorderLayout() );
		m_text = GuiTricks.unboldLabel( new JLabel() );
		m_progress = new JProgressBar();
		m_text.setBorder( BorderFactory.createEmptyBorder( 0, 0, 10, 0 ) );
		panel.add( m_text, BorderLayout.NORTH );
		panel.add( m_progress, BorderLayout.CENTER );
		panel.setPreferredSize( new Dimension( 360, 50 ) );
		
		// show the frame
		pane.doLayout();
		m_frame.setSize( 400, 120 );
		m_frame.setResizable( false );
		m_frame.setLocationRelativeTo( parent );
		m_frame.setVisible( true );
		m_frame.setDefaultCloseOperation( WindowConstants.DO_NOTHING_ON_CLOSE );
	}
	
	public void close( )
	{
		m_frame.dispose();
	}

	@Override
	public void init( int totalWork, String title )
	{
		m_title.setText( title );
		m_progress.setMinimum( 0 );
		m_progress.setMaximum( totalWork );
		m_progress.setValue( 0 );
	}

	@Override
	public void onProgress( int numDone, String message )
	{
		m_text.setText( message );
		m_progress.setValue( numDone );
		
		// update the frame
		m_frame.validate();
		m_frame.repaint();
	}
	
	public static interface ProgressRunnable
	{
		void run( ProgressListener listener ) throws Exception;
	}
	
	public static void runInThread( final JFrame parent, final ProgressRunnable runnable )
	{
		new Thread( )
		{
			@Override
			public void run( )
			{
				try( ProgressDialog progress = new ProgressDialog( parent ) )
				{
					runnable.run( progress );
				}
				catch( Exception ex )
				{
					throw new Error( ex );
				}
			}
		}.start();
	}
}