operationdialog.java

FuncPlotter is a combined Java application and applet for displaying two-dimensional plots of explic

        public void windowClosing( WindowEvent event )
        {
            location = getLocation( );
            if ( closed )
                dispose( );
            else
            {
                cancelled = true;
                Operation.setTerminated( true );
            }
        }

        //--------------------------------------------------------------

        public void windowOpened( WindowEvent event )
        {
            Operation.setProgressView( (OperationDialog)event.getWindow( ) );
            Operation.setException( null, true );
            Operation.setTerminated( false );
            operation.start( );
        }

        //--------------------------------------------------------------

    }

    //==================================================================

////////////////////////////////////////////////////////////////////////
//  Constructors
////////////////////////////////////////////////////////////////////////

    private OperationDialog( Window    owner,
                             String    titleStr,
                             Operation operation )
        throws AppException
    {
        super( owner, titleStr, Dialog.ModalityType.APPLICATION_MODAL );
        init( owner, operation );
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Class methods
////////////////////////////////////////////////////////////////////////

    public static void showDialog( Window    owner,
                                   String    titleStr,
                                   Operation operation )
        throws AppException
    {
        new OperationDialog( owner, titleStr, operation );
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Instance methods : ActionListener interface
////////////////////////////////////////////////////////////////////////

    public void actionPerformed( ActionEvent event )
    {
        if ( event.getActionCommand( ).equals( Command.CLOSE ) )
        {
            cancelButton.setEnabled( false );
            dispatchEvent( new WindowEvent( this, Event.WINDOW_DESTROY ) );
        }
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Instance methods : ProgressView interface
////////////////////////////////////////////////////////////////////////

    public void setInfo( String str )
    {
        setInfo( str, null );
    }

    //------------------------------------------------------------------

    public void setInfo( String str,
                         File   file )
    {
        try
        {
            SwingUtilities.invokeAndWait( new DoSetInfo( str, file ) );
        }
        catch ( Exception e )
        {
            // ignore
        }
    }

    //------------------------------------------------------------------

    public void setProgress( double value )
    {
        try
        {
            SwingUtilities.invokeAndWait( new DoSetProgress( value ) );
        }
        catch ( Exception e )
        {
            // ignore
        }
    }

    //------------------------------------------------------------------

    public void close( )
    {
        closed = true;
        dispatchEvent( new WindowEvent( this, Event.WINDOW_DESTROY ) );
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Instance methods : TextFile.ProgressListener interface
////////////////////////////////////////////////////////////////////////

    public void progress( double fractionDone )
    {
        setProgress( fractionDone );
    }

    //------------------------------------------------------------------

    public boolean isOperationTerminated( )
    {
        return Operation.isTerminated( );
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Instance methods
////////////////////////////////////////////////////////////////////////

    private void init( Window    owner,
                       Operation operation )
        throws AppException
    {

        // Set icons

        setIconImages( owner.getIconImages( ) );

        // Initialise instance variables

        this.operation = operation;


        //----  Info field

        infoField = new InfoField( );


        //----  Progress bar

        progressBar = new JProgressBar( 0, PROGRESS_BAR_MAX_VALUE );
        progressBar.setPreferredSize( new Dimension( PROGRESS_BAR_WIDTH, PROGRESS_BAR_HEIGHT ) );


        //----  Button panel

        JPanel buttonPanel = new JPanel( new GridLayout( 1, 0, 0, 0 ) );
        buttonPanel.setBorder( BorderFactory.createEmptyBorder( 2, 8, 3, 8 ) );

        // Button: cancel

        cancelButton = new FButton( AppConstants.CANCEL_STR );
        cancelButton.setActionCommand( Command.CLOSE );
        cancelButton.addActionListener( this );
        buttonPanel.add( cancelButton );


        //----  Main panel

        GridBagLayout gridBag = new GridBagLayout( );
        GridBagConstraints gbc = new GridBagConstraints( );

        JPanel mainPanel = new JPanel( gridBag );
        mainPanel.setBorder( BorderFactory.createEmptyBorder( 2, 2, 2, 2 ) );

        int gridY = 0;

        gbc.gridx = 0;
        gbc.gridy = gridY++;
        gbc.gridwidth = 1;
        gbc.gridheight = 1;
        gbc.weightx = 0.0;
        gbc.weighty = 0.0;
        gbc.anchor = GridBagConstraints.NORTH;
        gbc.fill = GridBagConstraints.HORIZONTAL;
        gbc.insets = new Insets( 8, 6, 8, 6 );
        gridBag.setConstraints( infoField, gbc );
        mainPanel.add( infoField );

        gbc.gridx = 0;
        gbc.gridy = gridY++;
        gbc.gridwidth = 1;
        gbc.gridheight = 1;
        gbc.weightx = 0.0;
        gbc.weighty = 0.0;
        gbc.anchor = GridBagConstraints.NORTH;
        gbc.fill = GridBagConstraints.HORIZONTAL;
        gbc.insets = new Insets( 4, 4, 0, 4 );
        gridBag.setConstraints( progressBar, gbc );
        mainPanel.add( progressBar );

        gbc.gridx = 0;
        gbc.gridy = gridY++;
        gbc.gridwidth = 1;
        gbc.gridheight = 1;
        gbc.weightx = 0.0;
        gbc.weighty = 0.0;
        gbc.anchor = GridBagConstraints.NORTH;
        gbc.fill = GridBagConstraints.NONE;
        gbc.insets = new Insets( 4, 0, 0, 0 );
        gridBag.setConstraints( buttonPanel, gbc );
        mainPanel.add( buttonPanel );


        //----  Window

        // Set content pane

        setContentPane( mainPanel );

        // Set orientation of components according to locale

        App.applyOrientationByLocale( this );

        // Add key commands to action map

        KeyAction.create( mainPanel, JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT,
                          KeyStroke.getKeyStroke( KeyEvent.VK_ESCAPE, 0 ), Command.CLOSE, this );

        // Dispose of window explicitly

        setDefaultCloseOperation( DO_NOTHING_ON_CLOSE );

        // Handle window closing

        addWindowListener( new WindowEventHandler( ) );

        // Prevent dialog from being resized

        setResizable( false );

        // Resize dialog to its preferred size

        pack( );

        // Set location of dialog box

        if ( location == null )
            location = GuiUtilities.getComponentLocation( this, owner );
        setLocation( location );

        // Set default button

        getRootPane( ).setDefaultButton( cancelButton );

        // Show dialog

        setVisible( true );

        // Throw any exception from operation thread

        Operation.throwOnException( );

    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Class variables
////////////////////////////////////////////////////////////////////////

    private static  Point   location;

////////////////////////////////////////////////////////////////////////
//  Instance variables
////////////////////////////////////////////////////////////////////////

    private Operation       operation;
    private boolean         closed;
    private boolean         cancelled;
    private InfoField       infoField;
    private JProgressBar    progressBar;
    private JButton         cancelButton;

}

//----------------------------------------------------------------------