first commit

src/main/java/net/vhati/modmanager/ui/ModPatchDialog.java

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+package net.vhati.modmanager.ui;
+
+import java.awt.BorderLayout;
+import java.awt.Frame;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.io.File;
+import javax.swing.BorderFactory;
+import javax.swing.Box;
+import javax.swing.BoxLayout;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JPanel;
+import javax.swing.JProgressBar;
+import javax.swing.JTextArea;
+import javax.swing.SwingUtilities;
+
+import net.vhati.modmanager.core.ModPatchObserver;
+
+
+public class ModPatchDialog extends JDialog implements ActionListener, ModPatchObserver {
+
+	private JProgressBar progressBar;
+	private JTextArea statusArea;
+	private JButton continueBtn;
+
+	private boolean done = false;
+	private boolean patchingSucceeded = false;
+	private Runnable successTask = null;
+
+
+	public ModPatchDialog( Frame owner ) {
+		super( owner, "Patching...", true );
+		this.setDefaultCloseOperation( JDialog.DO_NOTHING_ON_CLOSE );
+
+		progressBar = new JProgressBar();
+		progressBar.setBorderPainted( true );
+
+		JPanel progressHolder = new JPanel( new BorderLayout() );
+		progressHolder.setBorder( BorderFactory.createEmptyBorder( 10, 15, 0, 15 ) );
+		progressHolder.add( progressBar );
+		getContentPane().add( progressHolder, BorderLayout.NORTH );
+
+		statusArea = new JTextArea();
+		statusArea.setBorder( BorderFactory.createEtchedBorder() );
+		statusArea.setLineWrap( true );
+		statusArea.setWrapStyleWord( true );
+		statusArea.setEditable( false );
+
+		JPanel statusHolder = new JPanel( new BorderLayout() );
+		statusHolder.setBorder( BorderFactory.createEmptyBorder( 15, 15, 15, 15 ) );
+		statusHolder.add( statusArea );
+		getContentPane().add( statusHolder, BorderLayout.CENTER );
+
+		continueBtn = new JButton( "Continue" );
+		continueBtn.setEnabled( false );
+		continueBtn.addActionListener( this );
+
+		JPanel continueHolder = new JPanel();
+		continueHolder.setLayout( new BoxLayout( continueHolder, BoxLayout.X_AXIS ) );
+		continueHolder.setBorder( BorderFactory.createEmptyBorder( 0, 0, 10, 0 ) );
+		continueHolder.add( Box.createHorizontalGlue() );
+		continueHolder.add( continueBtn );
+		continueHolder.add( Box.createHorizontalGlue() );
+		getContentPane().add( continueHolder, BorderLayout.SOUTH );
+
+		this.setSize( 400, 160 );
+		this.setLocationRelativeTo( owner );
+	}
+
+
+	@Override
+	public void actionPerformed( ActionEvent e ) {
+		Object source = e.getSource();
+
+		if ( source == continueBtn ) {
+			this.setVisible( false );
+			this.dispose();
+
+			if ( done &&  patchingSucceeded && successTask != null ) {
+				successTask.run();
+			}
+		}
+	}
+
+
+	private void setStatusText( String message ) {
+		statusArea.setText( message != null ? message : "..." );
+	}
+
+
+	/**
+	 * Updates the progress bar.
+	 *
+	 * If either arg is -1, the bar will become indeterminate.
+	 *
+	 * @param value the new value
+	 * @param max the new maximum
+	 */
+	@Override
+	public void patchingProgress( final int value, final int max ) {
+		SwingUtilities.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				if ( value >= 0 && max >= 0 ) {
+					if ( progressBar.isIndeterminate() )
+						progressBar.setIndeterminate( false );
+
+					if ( progressBar.getMaximum() != max ) {
+						progressBar.setValue( 0 );
+						progressBar.setMaximum( max );
+					}
+					progressBar.setValue( value );
+				}
+				else {
+					if ( !progressBar.isIndeterminate() )
+						progressBar.setIndeterminate( true );
+					progressBar.setValue( 0 );
+				}
+			}
+		});
+	}
+
+	/**
+	 * Non-specific activity.
+	 *
+	 * @param message a string, or null
+	 */
+	@Override
+	public void patchingStatus( final String message ) {
+		SwingUtilities.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				setStatusText( message != null ? message : "..." );
+			}
+		});
+	}
+
+	/**
+	 * A mod is about to be processed.
+	 */
+	@Override
+	public void patchingMod( final File modFile ) {
+		SwingUtilities.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				setStatusText( String.format( "Installing mod \"%s\"...", modFile.getName() ) );
+			}
+		});
+	}
+
+	/**
+	 * Patching ended.
+	 *
+	 * If anything went wrong, e may be non-null.
+	 */
+	@Override
+	public void patchingEnded( final boolean success, final Exception e ) {
+		SwingUtilities.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				if ( success )
+					setStatusText( "Patching completed." );
+				else
+					setStatusText( String.format( "Patching failed: %s", e ) );
+
+				done = true;
+				patchingSucceeded = success;
+
+				continueBtn.setEnabled( true );
+			}
+		});
+	}
+
+
+	/**
+	 * Sets a runnable to trigger after patching successfully.
+	 */
+	public void setSuccessTask( Runnable r ) {
+		successTask = r;
+	}
+}