- All Known Implementing Classes:
- BasicComboPopup,- BasicInternalFrameTitlePane.SystemMenuBar,- JCheckBoxMenuItem,- JMenu,- JMenuBar,- JMenuItem,- JPopupMenu,- JRadioButtonMenuItem,- MetalComboBoxUI.MetalComboPopup
public interface MenuElement
Any component that can be placed into a menu should implement this interface.
 This interface is used by 
MenuSelectionManager
 to handle selection and navigation in menu hierarchies.- Since:
- 1.2
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Method SummaryModifier and TypeMethodDescriptionThis method should return thejava.awt.Componentused to paint the receiving element.This method should return an array containing the sub-elements for the receiving menu element.voidmenuSelectionChanged(boolean isIncluded) Call by theMenuSelectionManagerwhen theMenuElementis added or removed from the menu selection.voidprocessKeyEvent(KeyEvent event, MenuElement[] path, MenuSelectionManager manager) Process a key event.voidprocessMouseEvent(MouseEvent event, MenuElement[] path, MenuSelectionManager manager) Processes a mouse event.
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Method Details- 
processMouseEventProcesses a mouse event.eventis aMouseEventwith source being the receiving element's component.pathis the path of the receiving element in the menu hierarchy including the receiving element itself.manageris theMenuSelectionManagerfor the menu hierarchy. This method should process theMouseEventand change the menu selection if necessary by usingMenuSelectionManager's API Note: you do not have to forward the event to sub-components. This is done automatically by theMenuSelectionManager.- Parameters:
- event- a- MouseEventto be processed
- path- the path of the receiving element in the menu hierarchy
- manager- the- MenuSelectionManagerfor the menu hierarchy
 
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processKeyEventProcess a key event.- Parameters:
- event- a- KeyEventto be processed
- path- the path of the receiving element in the menu hierarchy
- manager- the- MenuSelectionManagerfor the menu hierarchy
 
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getSubElementsMenuElement[] getSubElements()This method should return an array containing the sub-elements for the receiving menu element.- Returns:
- an array of MenuElements
 
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getComponentComponent getComponent()This method should return thejava.awt.Componentused to paint the receiving element. The returned component will be used to convert events and detect if an event is inside aMenuElement's component.- Returns:
- the Componentvalue
 
 
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