Module java.desktop

Class SynthComboBoxUI

All Implemented Interfaces:
PropertyChangeListener, EventListener, SynthConstants, SynthUI

public class SynthComboBoxUI extends BasicComboBoxUI implements PropertyChangeListener, SynthUI
Provides the Synth L&F UI delegate for JComboBox.
  • Constructor Details

    • SynthComboBoxUI

      public SynthComboBoxUI()
      Constructs a SynthComboBoxUI.
  • Method Details

    • createUI

      public static ComponentUI createUI(JComponent c)
      Creates a new UI object for the given component.
      c - component to create UI object for
      the UI object
    • installUI

      public void installUI(JComponent c)
      Configures the specified component appropriately for the look and feel. This method is invoked when the ComponentUI instance is being installed as the UI delegate on the specified component. This method should completely configure the component for the look and feel, including the following:
      1. Install default property values for color, fonts, borders, icons, opacity, etc. on the component. Whenever possible, property values initialized by the client program should not be overridden.
      2. Install a LayoutManager on the component if necessary.
      3. Create/add any required sub-components to the component.
      4. Create/install event listeners on the component.
      5. Create/install a PropertyChangeListener on the component in order to detect and respond to component property changes appropriately.
      6. Install keyboard UI (mnemonics, traversal, etc.) on the component.
      7. Initialize any appropriate instance data.
      Overridden to ensure that ButtonHandler is created prior to any of the other installXXX methods, since several of them reference buttonHandler.
      installUI in class ComponentUI
      c - the component where this UI delegate is being installed
      See Also:
    • getContext

      public SynthContext getContext(JComponent c)
      Returns the Context for the specified component.
      Specified by:
      getContext in interface SynthUI
      c - Component requesting SynthContext.
      SynthContext describing component.
    • propertyChange

      public void propertyChange(PropertyChangeEvent e)
      This method gets called when a bound property is changed.
      Specified by:
      propertyChange in interface PropertyChangeListener
      e - A PropertyChangeEvent object describing the event source and the property that has changed.
    • update

      public void update(Graphics g, JComponent c)
      Notifies this UI delegate to repaint the specified component. This method paints the component background, then calls the paint(SynthContext,Graphics) method.

      In general, this method does not need to be overridden by subclasses. All Look and Feel rendering code should reside in the paint method.

      update in class ComponentUI
      g - the Graphics object used for painting
      c - the component being painted
      See Also:
    • paint

      public void paint(Graphics g, JComponent c)
      Paints the specified component according to the Look and Feel.

      This method is not used by Synth Look and Feel. Painting is handled by the paint(SynthContext,Graphics) method.

      paint in class ComponentUI
      g - the Graphics object used for painting
      c - the component being painted
      See Also:
    • paint

      protected void paint(SynthContext context, Graphics g)
      Paints the specified component.
      context - context for the component being painted
      g - the Graphics object used for painting
      See Also:
    • paintBorder

      public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)
      Paints the border.
      Specified by:
      paintBorder in interface SynthUI
      context - a component context
      g - Graphics to paint on
      x - the X coordinate
      y - the Y coordinate
      w - width of the border
      h - height of the border
    • paintCurrentValue

      public void paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus)
      Paints the currently selected item.
      paintCurrentValue in class BasicComboBoxUI
      g - an instance of Graphics
      bounds - a bounding rectangle to render to
      hasFocus - is focused
    • getDefaultSize

      protected Dimension getDefaultSize()
      Returns the default size of an empty display area of the combo box using the current renderer and font. This method was overridden to use SynthComboBoxRenderer instead of DefaultListCellRenderer as the default renderer when calculating the size of the combo box. This is used in the case of the combo not having any data.
      getDefaultSize in class BasicComboBoxUI
      the size of an empty display area
      See Also: