Class BasicMenuUI.MouseInputHandler
- java.lang.Object
-
- javax.swing.plaf.basic.BasicMenuUI.MouseInputHandler
- All Implemented Interfaces:
-
MouseListener
,MouseMotionListener
,EventListener
,MouseInputListener
- Enclosing class:
- BasicMenuUI
protected class BasicMenuUI.MouseInputHandler extends Object implements MouseInputListener
Instantiated and used by a menu item to handle the current menu selection from mouse events. A MouseInputHandler processes and forwards all mouse events to a shared instance of the MenuSelectionManager.
This class is protected so that it can be subclassed by other look and feels to implement their own mouse handling behavior. All overridden methods should call the parent methods so that the menu selection is correct.
- Since:
- 1.4
- See Also:
MenuSelectionManager
Constructor Summary
Modifier | Constructor | Description |
---|---|---|
protected | MouseInputHandler() |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
void | mouseDragged(MouseEvent e) | Invoked when a mouse button is pressed on the menu and then dragged. |
void | mouseEntered(MouseEvent e) | Invoked when the cursor enters the menu. |
void | mousePressed(MouseEvent e) | Invoked when the mouse has been clicked on the menu. |
void | mouseReleased(MouseEvent e) | Invoked when the mouse has been released on the menu. |
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods declared in interface java.awt.event.MouseListener
mouseClicked, mouseExited
Methods declared in interface java.awt.event.MouseMotionListener
mouseMoved
Constructor Detail
MouseInputHandler
protected MouseInputHandler()
Method Detail
mousePressed
public void mousePressed(MouseEvent e)
Invoked when the mouse has been clicked on the menu. This method clears or sets the selection path of the MenuSelectionManager.
- Specified by:
-
mousePressed
in interfaceMouseListener
- Parameters:
-
e
- the mouse event
mouseReleased
public void mouseReleased(MouseEvent e)
Invoked when the mouse has been released on the menu. Delegates the mouse event to the MenuSelectionManager.
- Specified by:
-
mouseReleased
in interfaceMouseListener
- Parameters:
-
e
- the mouse event
mouseEntered
public void mouseEntered(MouseEvent e)
Invoked when the cursor enters the menu. This method sets the selected path for the MenuSelectionManager and handles the case in which a menu item is used to pop up an additional menu, as in a hierarchical menu system.
- Specified by:
-
mouseEntered
in interfaceMouseListener
- Parameters:
-
e
- the mouse event; not used
mouseDragged
public void mouseDragged(MouseEvent e)
Invoked when a mouse button is pressed on the menu and then dragged. Delegates the mouse event to the MenuSelectionManager.
- Specified by:
-
mouseDragged
in interfaceMouseMotionListener
- Parameters:
-
e
- the mouse event - See Also:
MouseMotionListener.mouseDragged(java.awt.event.MouseEvent)