noneditabletextareadialog.java

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

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

    protected JTextArea getTextArea( )
    {
        return textArea;
    }

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

    protected void setTextAreaAttributes( )
    {
        // do nothing
    }

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

    protected void applyOrientation( )
    {
        // do nothing
    }

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

    private void init( Window  owner,
                       int     numColumns,
                       int     numRows,
                       String  text,
                       boolean canClear )
    {

        // Set icons

        if ( owner != null )
            setIconImages( owner.getIconImages( ) );


        //----  Text area scroll pane

        // Text area

        textArea = new JTextArea( text );
        GuiUtilities.setFont( Constants.FontName.TEXT_FIELD, textArea );
        textArea.setBorder( BorderFactory.createEmptyBorder( ) );
        textArea.setEditable( false );
        textArea.setCaretPosition( 0 );

        // Scroll pane

        JScrollPane textAreaScrollPane = new JScrollPane( textArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                                                          JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS );
        FontMetrics fontMetrics = textArea.getFontMetrics( textArea.getFont( ) );
        int width = numColumns * GuiUtilities.getCharWidth( '0', fontMetrics );
        int height = numRows * fontMetrics.getHeight( );
        textAreaScrollPane.getViewport( ).setPreferredSize( new Dimension( width, height ) );
        textAreaScrollPane.setViewportBorder( BorderFactory.
                                                        createMatteBorder( 2, 4, 2, 4,
                                                                           textArea.getBackground( ) ) );

        // Set text area attributes

        setTextAreaAttributes( );


        //----  Button panel

        JPanel buttonPanel = new JPanel( new GridLayout( 1, 0, 24, 0 ) );
        buttonPanel.setBorder( BorderFactory.createEmptyBorder( 2, 8, 3, 8 ) );

        // Button: clear

        if ( canClear )
        {
            clearButton = new FButton( CLEAR_STR );
            clearButton.setMnemonic( KeyEvent.VK_X );
            clearButton.setToolTipText( CLEAR_TOOL_TIP_STR );
            clearButton.setActionCommand( Command.CLEAR );
            clearButton.addActionListener( this );
            buttonPanel.add( clearButton );
        }

        // Button: copy

        copyButton = new FButton( COPY_STR );
        copyButton.setMnemonic( KeyEvent.VK_C );
        copyButton.setToolTipText( COPY_TOOL_TIP_STR );
        copyButton.setActionCommand( Command.COPY );
        copyButton.addActionListener( this );
        buttonPanel.add( copyButton );

        // Button: close

        closeButton = new FButton( CLOSE_STR );
        closeButton.setActionCommand( Command.CLOSE );
        closeButton.addActionListener( this );
        buttonPanel.add( closeButton );


        //----  Main panel

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

        JPanel mainPanel = new JPanel( gridBag );

        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.NONE;
        gbc.insets = new Insets( 1, 0, 0, 0 );
        gridBag.setConstraints( textAreaScrollPane, gbc );
        mainPanel.add( textAreaScrollPane );

        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, 2, 0 );
        gridBag.setConstraints( buttonPanel, gbc );
        mainPanel.add( buttonPanel );


        //----  Window

        // Set content pane

        setContentPane( mainPanel );

        // Update components

        updateComponents( );

        // Set orientation of components

        applyOrientation( );

        // Add key commands to action map

        KeyAction.create( mainPanel, JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, KEY_COMMANDS, 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

        Point location = (Point)locations.get( getClass( ) );
        if ( location == null )
            location = GuiUtilities.getComponentLocation( this, owner );
        setLocation( location );

        // Set default button

        getRootPane( ).setDefaultButton( closeButton );

        // Show dialog

        setVisible( true );

    }

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

    private void updateComponents( )
    {
        if ( textArea.getText( ).length( ) == 0 )
        {
            copyButton.setEnabled( false );
            closeButton.requestFocusInWindow( );
        }
    }

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

    private void doClear( )
    {
        if ( clearButton != null )
        {
            textArea.setText( null );
            clearButton.setEnabled( false );
            cleared = true;
            updateComponents( );
        }
    }

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

    private void doCopy( )
    {
        StringSelection selection = new StringSelection( textArea.getText( ) );
        try
        {
            try
            {
                getToolkit( ).getSystemClipboard( ).setContents( selection, selection );
            }
            catch ( IllegalStateException e )
            {
                throw new AppException( ErrorId.CLIPBOARD_UNAVAILABLE, e );
            }
        }
        catch ( AppException e )
        {
            JOptionPane.showMessageDialog( this, e, CLIPBOARD_ERROR_STR, JOptionPane.ERROR_MESSAGE );
        }
    }

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

    private void doClose( )
    {
        locations.put( getClass( ), getLocation( ) );
        setVisible( false );
        dispose( );
    }

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

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

    private static  Hashtable<Class,Point>  locations   = new Hashtable<Class,Point>( );

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

    private boolean     cleared;
    private JTextArea   textArea;
    private JButton     clearButton;
    private JButton     copyButton;
    private JButton     closeButton;

}

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