javax.swing.beaninfo: public class: SwingPointEditor

javax.swing.beaninfo
public class: SwingPointEditor [javadoc | source]

java.lang.Object
   java.beans.PropertyEditorSupport
      javax.swing.beaninfo.SwingEditorSupport
         javax.swing.beaninfo.SwingPointEditor

All Implemented Interfaces:
PropertyEditor

A PropertyEditor for editing a Point object.

version: 1.2 - 02/27/02

author: Mark - Davidson

Fields inherited from javax.swing.beaninfo.SwingEditorSupport:
panel, LARGE_DIMENSION, MEDIUM_DIMENSION, SMALL_DIMENSION, BUTTON_MARGIN

Constructor:
public SwingPointEditor() { xTF = new JTextField(); xTF.setDocument(new NumberDocument()); yTF = new JTextField(); yTF.setDocument(new NumberDocument()); ActionListener l = new ActionListener() { public void actionPerformed(ActionEvent e) { int x = Integer.parseInt( xTF.getText() ); int y = Integer.parseInt( yTF.getText() ); setValue( new Point( x, y ) ); } }; xTF.addActionListener( l ); yTF.addActionListener( l ); JLabel wlabel = new JLabel(" X: "); JLabel hlabel = new JLabel(" Y: "); panel = new JPanel(); panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS)); panel.add(wlabel); panel.add(xTF); panel.add(hlabel); panel.add(yTF); }

Constructor:

 public SwingPointEditor() {
        xTF = new JTextField();
        xTF.setDocument(new NumberDocument());
        yTF = new JTextField();
        yTF.setDocument(new NumberDocument());
        ActionListener l = new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                        int x = Integer.parseInt( xTF.getText() );
                        int y = Integer.parseInt( yTF.getText() );
                        setValue( new Point( x, y ) );
                    }
                };
        xTF.addActionListener( l );
        yTF.addActionListener( l );
        JLabel wlabel = new JLabel(" X: ");
        JLabel hlabel = new JLabel(" Y: ");
        panel = new JPanel();
        panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS));
        panel.add(wlabel);
        panel.add(xTF);
        panel.add(hlabel);
        panel.add(yTF);
}

Method from javax.swing.beaninfo.SwingPointEditor Summary:
getValue, init, setValue

Methods from javax.swing.beaninfo.SwingEditorSupport:
getCustomEditor, init, setAlignment, supportsCustomEditor

Methods from java.beans.PropertyEditorSupport:
addPropertyChangeListener, firePropertyChange, getAsText, getCustomEditor, getJavaInitializationString, getSource, getTags, getValue, isPaintable, paintValue, removePropertyChangeListener, setAsText, setSource, setValue, supportsCustomEditor

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from javax.swing.beaninfo.SwingPointEditor Detail:
public Object getValue() { try { int x = Integer.parseInt(xTF.getText()); int y = Integer.parseInt(yTF.getText()); return new Point(x, y); } catch (NumberFormatException ex) { // Fall out but return null } return null; }
public void init(PropertyDescriptor descriptor) { // disable editing if its a readonly property if( descriptor.getWriteMethod() == null ) { xTF.setEditable( false ); yTF.setEditable( false ); } else { xTF.setEditable( true ); yTF.setEditable( true ); } }
public void setValue(Object value) { if (value != null) { Point point = (Point)value; xTF.setText(Integer.toString(point.x)); yTF.setText(Integer.toString(point.y)); } else { // null value xTF.setText(""); yTF.setText(""); } super.setValue(value); }

Method from javax.swing.beaninfo.SwingPointEditor Detail:

 public Object getValue() {
        try {
            int x = Integer.parseInt(xTF.getText());
            int y = Integer.parseInt(yTF.getText());
            return new Point(x, y);
        } catch (NumberFormatException ex) {
            // Fall out but return null
        }
        return null;
}

 public  void init(PropertyDescriptor descriptor) {
        // disable editing if its a readonly property
        if( descriptor.getWriteMethod() == null ) {
            xTF.setEditable( false );
            yTF.setEditable( false );
        } else {
            xTF.setEditable( true );
            yTF.setEditable( true );
        }
}

 public  void setValue(Object value) {
        if (value != null) {
            Point point = (Point)value;
            xTF.setText(Integer.toString(point.x));
            yTF.setText(Integer.toString(point.y));
        } else {
            // null value
            xTF.setText("");
            yTF.setText("");
        }
        super.setValue(value);
}