Class BasicPopupMenuUI

Direct Known Subclasses:
SynthPopupMenuUI

public class BasicPopupMenuUI
extends PopupMenuUI

A Windows L&F implementation of PopupMenuUI. This implementation is a "combined" view/controller.

Fields

Modifier and Type Field and Description
protected JPopupMenu popupMenu

Constructors

Constructor and Description
BasicPopupMenuUI()

Methods

Modifier and Type Method and Description
static ComponentUI createUI(JComponent x)
void installDefaults()
protected void installKeyboardActions()
protected void installListeners()
void installUI(JComponent c)

Configures the specified component appropriately for the look and feel.

boolean isPopupTrigger(MouseEvent e)
protected void uninstallDefaults()
protected void uninstallKeyboardActions()
protected void uninstallListeners()
void uninstallUI(JComponent c)

Reverses configuration which was done on the specified component during installUI.

Methods inherited from class javax.swing.plaf.PopupMenuUI

getPopup

Methods inherited from class javax.swing.plaf.ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, paint, update

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Fields

popupMenu

protected JPopupMenu popupMenu

Constructors

BasicPopupMenuUI

public BasicPopupMenuUI()

Methods

createUI

public static ComponentUI createUI(JComponent x)

installUI

public void installUI(JComponent c)

Description copied from class: ComponentUI

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.

Overrides:
installUI in class ComponentUI
Parameters:
c - the component where this UI delegate is being installed
See Also:
ComponentUI.uninstallUI(javax.swing.JComponent), JComponent.setUI(javax.swing.plaf.ComponentUI), JComponent.updateUI()

installDefaults

public void installDefaults()

installListeners

protected void installListeners()

installKeyboardActions

protected void installKeyboardActions()

uninstallUI

public void uninstallUI(JComponent c)

Description copied from class: ComponentUI

Reverses configuration which was done on the specified component during installUI. This method is invoked when this UIComponent instance is being removed as the UI delegate for the specified component. This method should undo the configuration performed in installUI, being careful to leave the JComponent instance in a clean state (no extraneous listeners, look-and-feel-specific property objects, etc.). This should include the following:

  1. Remove any UI-set borders from the component.
  2. Remove any UI-set layout managers on the component.
  3. Remove any UI-added sub-components from the component.
  4. Remove any UI-added event/property listeners from the component.
  5. Remove any UI-installed keyboard UI from the component.
  6. Nullify any allocated instance data objects to allow for GC.

Overrides:
uninstallUI in class ComponentUI
Parameters:
c - the component from which this UI delegate is being removed; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components
See Also:
ComponentUI.installUI(javax.swing.JComponent), JComponent.updateUI()

uninstallDefaults

protected void uninstallDefaults()

uninstallListeners

protected void uninstallListeners()

uninstallKeyboardActions

protected void uninstallKeyboardActions()

isPopupTrigger

public boolean isPopupTrigger(MouseEvent e)
Overrides:
isPopupTrigger in class PopupMenuUI

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https://docs.oracle.com/javase/8/docs/api/javax/swing/plaf/basic/BasicPopupMenuUI.html