Class MetalComboBoxUI


public class MetalComboBoxUI extends BasicComboBoxUI
Metal UI for JComboBox

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans package. Please see XMLEncoder.

See Also:
  • Constructor Details

    • MetalComboBoxUI

      public MetalComboBoxUI()
      Constructs a MetalComboBoxUI.
  • Method Details

    • createUI

      public static ComponentUI createUI(JComponent c)
      Constructs an instance of MetalComboBoxUI.
      Parameters:
      c - a component
      Returns:
      an instance of MetalComboBoxUI
    • paint

      public void paint(Graphics g, JComponent c)
      Description copied from class: ComponentUI
      Paints the specified component appropriately for the look and feel. This method is invoked from the ComponentUI.update method when the specified component is being painted. Subclasses should override this method and use the specified Graphics object to render the content of the component.
      Overrides:
      paint in class BasicComboBoxUI
      Parameters:
      g - the Graphics context in which to paint
      c - the component being painted; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components
      See Also:
    • paintCurrentValue

      public void paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus)
      If necessary paints the currently selected item.
      Overrides:
      paintCurrentValue in class BasicComboBoxUI
      Parameters:
      g - Graphics to paint to
      bounds - Region to paint current value to
      hasFocus - whether or not the JComboBox has focus
      Throws:
      NullPointerException - if any of the arguments are null.
      Since:
      1.5
    • paintCurrentValueBackground

      public void paintCurrentValueBackground(Graphics g, Rectangle bounds, boolean hasFocus)
      If necessary paints the background of the currently selected item.
      Overrides:
      paintCurrentValueBackground in class BasicComboBoxUI
      Parameters:
      g - Graphics to paint to
      bounds - Region to paint background to
      hasFocus - whether or not the JComboBox has focus
      Throws:
      NullPointerException - if any of the arguments are null.
      Since:
      1.5
    • getBaseline

      public int getBaseline(JComponent c, int width, int height)
      Returns the baseline.
      Overrides:
      getBaseline in class BasicComboBoxUI
      Parameters:
      c - JComponent baseline is being requested for
      width - the width to get the baseline for
      height - the height to get the baseline for
      Returns:
      baseline or a value < 0 indicating there is no reasonable baseline
      Throws:
      NullPointerException - if c is null
      IllegalArgumentException - if width or height is < 0
      Since:
      1.6
      See Also:
    • createEditor

      protected ComboBoxEditor createEditor()
      Description copied from class: BasicComboBoxUI
      Creates the default editor that will be used in editable combo boxes. A default editor will be used only if an editor has not been explicitly set with setEditor.
      Overrides:
      createEditor in class BasicComboBoxUI
      Returns:
      a ComboBoxEditor used for the combo box
      See Also:
    • createPopup

      protected ComboPopup createPopup()
      Description copied from class: BasicComboBoxUI
      Creates the popup portion of the combo box.
      Overrides:
      createPopup in class BasicComboBoxUI
      Returns:
      an instance of ComboPopup
      See Also:
    • createArrowButton

      protected JButton createArrowButton()
      Description copied from class: BasicComboBoxUI
      Creates a button which will be used as the control to show or hide the popup portion of the combo box.
      Overrides:
      createArrowButton in class BasicComboBoxUI
      Returns:
      a button which represents the popup control
    • createPropertyChangeListener

      public PropertyChangeListener createPropertyChangeListener()
      Description copied from class: BasicComboBoxUI
      Creates a PropertyChangeListener which will be added to the combo box. If this method returns null then it will not be added to the combo box.
      Overrides:
      createPropertyChangeListener in class BasicComboBoxUI
      Returns:
      an instance of a PropertyChangeListener or null
    • editablePropertyChanged

      @Deprecated protected void editablePropertyChanged(PropertyChangeEvent e)
      Deprecated.
      As of Java 2 platform v1.4.
      As of Java 2 platform v1.4 this method is no longer used. Do not call or override. All the functionality of this method is in the MetalPropertyChangeListener.
      Parameters:
      e - an instance of PropertyChangeEvent
    • createLayoutManager

      protected LayoutManager createLayoutManager()
      Description copied from class: BasicComboBoxUI
      Creates a layout manager for managing the components which make up the combo box.
      Overrides:
      createLayoutManager in class BasicComboBoxUI
      Returns:
      an instance of a layout manager
    • layoutComboBox

      public void layoutComboBox(Container parent, MetalComboBoxUI.MetalComboBoxLayoutManager manager)
      Lays out the JComboBox in the parent container.
      Parameters:
      parent - a container
      manager - an instance of MetalComboBoxLayoutManager
    • removeListeners

      @Deprecated protected void removeListeners()
      Deprecated.
      As of Java 2 platform v1.4.
      As of Java 2 platform v1.4 this method is no longer used.
    • configureEditor

      public void configureEditor()
      Description copied from class: BasicComboBoxUI
      This protected method is implementation specific and should be private. do not call or override.
      Overrides:
      configureEditor in class BasicComboBoxUI
      See Also:
    • unconfigureEditor

      public void unconfigureEditor()
      Description copied from class: BasicComboBoxUI
      This protected method is implementation specific and should be private. Do not call or override.
      Overrides:
      unconfigureEditor in class BasicComboBoxUI
      See Also:
    • getMinimumSize

      public Dimension getMinimumSize(JComponent c)
      Description copied from class: BasicComboBoxUI
      The minimum size is the size of the display area plus insets plus the button.
      Overrides:
      getMinimumSize in class BasicComboBoxUI
      Parameters:
      c - the component whose minimum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components
      Returns:
      a Dimension object or null
      See Also: