Class BasicMenuItemUI

java.lang.Object
javax.swing.plaf.ComponentUI
javax.swing.plaf.ButtonUI
javax.swing.plaf.MenuItemUI
javax.swing.plaf.basic.BasicMenuItemUI
Direct Known Subclasses:
BasicCheckBoxMenuItemUI, BasicMenuUI, BasicRadioButtonMenuItemUI, SynthMenuItemUI
public class BasicMenuItemUI extends MenuItemUI
BasicMenuItem implementation

  • Field Details

    • selectionBackground

      protected Color selectionBackground
      The color of the selection background.

    • selectionForeground

      protected Color selectionForeground
      The color of the selection foreground.

    • disabledForeground

      protected Color disabledForeground
      The color of the disabled foreground.

    • acceleratorForeground

      protected Color acceleratorForeground
      The color of the accelerator foreground.

    • acceleratorSelectionForeground

      protected Color acceleratorSelectionForeground
      The color of the accelerator selection.

    • acceleratorDelimiter

      protected String acceleratorDelimiter
      Accelerator delimiter string, such as '+' in 'Ctrl+C'.
      Since:
      1.7

    • defaultTextIconGap

      protected int defaultTextIconGap
      The gap between the text and the icon.

    • acceleratorFont

      protected Font acceleratorFont
      The accelerator font.

    • mouseInputListener

      protected MouseInputListener mouseInputListener
      The instance of MouseInputListener.

    • propertyChangeListener

      protected PropertyChangeListener propertyChangeListener
      PropertyChangeListener returned from createPropertyChangeListener. You should not need to access this field, rather if you want to customize the PropertyChangeListener override createPropertyChangeListener.
      Since:
      1.6
      See Also:

    • arrowIcon

      protected Icon arrowIcon
      The arrow icon.

    • checkIcon

      protected Icon checkIcon
      The check icon.

    • oldBorderPainted

      protected boolean oldBorderPainted
      The value represents if the old border is painted.

  • Constructor Details

    • BasicMenuItemUI

      public BasicMenuItemUI()
      Constructs a BasicMenuItemUI.

  • Method Details

    • createUI

      public static ComponentUI createUI(JComponent c)
      Returns a new instance of BasicMenuItemUI.
      Parameters:
      c - a component
      Returns:
      a new instance of BasicMenuItemUI

    • installDefaults

      protected void installDefaults()
      Installs default properties.

    • installComponents

      protected void installComponents(JMenuItem menuItem)
      Registers the subcomponents of the menu.
      Parameters:
      menuItem - a menu item
      Since:
      1.3

    • getPropertyPrefix

      protected String getPropertyPrefix()
      Returns a property prefix.
      Returns:
      a property prefix

    • installListeners

      protected void installListeners()
      Registers listeners.

    • installKeyboardActions

      protected void installKeyboardActions()
      Registers keyboard action.

    • uninstallDefaults

      protected void uninstallDefaults()
      Uninstalls default properties.

    • uninstallComponents

      protected void uninstallComponents(JMenuItem menuItem)
      Unregisters components.
      Parameters:
      menuItem - a menu item
      Since:
      1.3

    • uninstallListeners

      protected void uninstallListeners()
      Unregisters listeners.

    • uninstallKeyboardActions

      protected void uninstallKeyboardActions()
      Unregisters keyboard actions.

    • createMouseInputListener

      protected MouseInputListener createMouseInputListener(JComponent c)
      Returns an instance of MouseInputListener.
      Parameters:
      c - a component
      Returns:
      an instance of MouseInputListener

    • createMenuDragMouseListener

      protected MenuDragMouseListener createMenuDragMouseListener(JComponent c)
      Returns an instance of MenuDragMouseListener.
      Parameters:
      c - a component
      Returns:
      an instance of MenuDragMouseListener

    • createMenuKeyListener

      protected MenuKeyListener createMenuKeyListener(JComponent c)
      Returns an instance of MenuKeyListener.
      Parameters:
      c - a component
      Returns:
      an instance of MenuKeyListener

    • createPropertyChangeListener

      protected PropertyChangeListener createPropertyChangeListener(JComponent c)
      Creates a PropertyChangeListener which will be added to the menu item. If this method returns null then it will not be added to the menu item.
      Parameters:
      c - a component
      Returns:
      an instance of a PropertyChangeListener or null
      Since:
      1.6

    • getPreferredMenuItemSize

      protected Dimension getPreferredMenuItemSize(JComponent c, Icon checkIcon, Icon arrowIcon, int defaultTextIconGap)
      Returns the preferred size of a menu item.
      Parameters:
      c - a component
      checkIcon - a check icon
      arrowIcon - an arrow icon
      defaultTextIconGap - a gap between a text and an icon
      Returns:
      the preferred size of a menu item

    • update

      public void update(Graphics g, JComponent c)
      We draw the background in paintMenuItem() so override update (which fills the background of opaque components by default) to just call paint().
      Overrides:
      update in class ComponentUI
      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:

    • paintMenuItem

      protected void paintMenuItem(Graphics g, JComponent c, Icon checkIcon, Icon arrowIcon, Color background, Color foreground, int defaultTextIconGap)
      Paints a menu item.
      Parameters:
      g - an instance of Graphics
      c - a component
      checkIcon - a check icon
      arrowIcon - an arrow icon
      background - a background color
      foreground - a foreground color
      defaultTextIconGap - a gap between a text and an icon

    • paintBackground

      protected void paintBackground(Graphics g, JMenuItem menuItem, Color bgColor)
      Draws the background of the menu item.
      Parameters:
      g - the paint graphics
      menuItem - menu item to be painted
      bgColor - selection background color
      Since:
      1.4

    • paintText

      protected void paintText(Graphics g, JMenuItem menuItem, Rectangle textRect, String text)
      Renders the text of the current menu item.
      Parameters:
      g - graphics context
      menuItem - menu item to render
      textRect - bounding rectangle for rendering the text
      text - string to render
      Since:
      1.4

    • getPath

      public MenuElement[] getPath()
      Returns a menu element path.
      Returns:
      a menu element path

    • doClick

      protected void doClick(MenuSelectionManager msm)
      Call this method when a menu item is to be activated. This method handles some of the details of menu item activation such as clearing the selected path and messaging the JMenuItem's doClick() method.
      Parameters:
      msm - A MenuSelectionManager. The visual feedback and internal bookkeeping tasks are delegated to this MenuSelectionManager. If null is passed as this argument, the MenuSelectionManager.defaultManager is used.
      Since:
      1.4
      See Also: