/OpenJDK 8 GUI

Class BasicRootPaneUI

All Implemented Interfaces:
PropertyChangeListener, EventListener
Direct Known Subclasses:
MetalRootPaneUI, SynthRootPaneUI
public class BasicRootPaneUI
extends RootPaneUI
implements PropertyChangeListener

Basic implementation of RootPaneUI, there is one shared between all JRootPane instances.




public BasicRootPaneUI()



public static ComponentUI createUI(JComponent c)


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.
installUI in class ComponentUI
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()


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.
uninstallUI in class ComponentUI
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()


protected void installDefaults(JRootPane c)


protected void installComponents(JRootPane root)


protected void installListeners(JRootPane root)


protected void installKeyboardActions(JRootPane root)


protected void uninstallDefaults(JRootPane root)


protected void uninstallComponents(JRootPane root)


protected void uninstallListeners(JRootPane root)


protected void uninstallKeyboardActions(JRootPane root)


public void propertyChange(PropertyChangeEvent e)

Invoked when a property changes on the root pane. If the event indicates the defaultButton has changed, this will reinstall the keyboard actions.

Specified by:
propertyChange in interface PropertyChangeListener
e - A PropertyChangeEvent object describing the event source and the property that has changed.

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Documentation extracted from Debian's OpenJDK Development Kit package.
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