BasicMenuUI.MouseInputHandler (Java Platform SE 8 ) (original) (raw)

• 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

  Constructors

  Modifier	Constructor	Description
  protected	MouseInputHandler()

  • Method Summary

  All Methods Instance Methods Concrete Methods

  Modifier and Type	Method	Description
  void	mouseClicked(MouseEvent e)	Invoked when the mouse button has been clicked (pressed and released) on a component.
  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	mouseExited(MouseEvent e)	Invoked when the mouse exits a component.
  void	mouseMoved(MouseEvent e)	Invoked when the mouse cursor has been moved onto a component but no buttons have been pushed.
  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 inherited from class java.lang.[Object](../../../../java/lang/Object.html "class in java.lang")  
     `[clone](../../../../java/lang/Object.html#clone--), [equals](../../../../java/lang/Object.html#equals-java.lang.Object-), [finalize](../../../../java/lang/Object.html#finalize--), [getClass](../../../../java/lang/Object.html#getClass--), [hashCode](../../../../java/lang/Object.html#hashCode--), [notify](../../../../java/lang/Object.html#notify--), [notifyAll](../../../../java/lang/Object.html#notifyAll--), [toString](../../../../java/lang/Object.html#toString--), [wait](../../../../java/lang/Object.html#wait--), [wait](../../../../java/lang/Object.html#wait-long-), [wait](../../../../java/lang/Object.html#wait-long-int-)`

• • Constructor Detail

     * #### MouseInputHandler  
     protected MouseInputHandler()  

  • Method Detail

    * #### mouseClicked  
    public void mouseClicked([MouseEvent](../../../../java/awt/event/MouseEvent.html "class in java.awt.event") e)  
    Invoked when the mouse button has been clicked (pressed and released) on a component.  
    Specified by:  
    `[mouseClicked](../../../../java/awt/event/MouseListener.html#mouseClicked-java.awt.event.MouseEvent-)` in interface `[MouseListener](../../../../java/awt/event/MouseListener.html "interface in java.awt.event")`  
    * #### mousePressed  
    public void mousePressed([MouseEvent](../../../../java/awt/event/MouseEvent.html "class in java.awt.event") 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](../../../../java/awt/event/MouseListener.html#mousePressed-java.awt.event.MouseEvent-)` in interface `[MouseListener](../../../../java/awt/event/MouseListener.html "interface in java.awt.event")`  
    Parameters:  
    `e` \- the mouse event  
    * #### mouseReleased  
    public void mouseReleased([MouseEvent](../../../../java/awt/event/MouseEvent.html "class in java.awt.event") e)  
    Invoked when the mouse has been released on the menu. Delegates the mouse event to the MenuSelectionManager.  
    Specified by:  
    `[mouseReleased](../../../../java/awt/event/MouseListener.html#mouseReleased-java.awt.event.MouseEvent-)` in interface `[MouseListener](../../../../java/awt/event/MouseListener.html "interface in java.awt.event")`  
    Parameters:  
    `e` \- the mouse event  
    * #### mouseEntered  
    public void mouseEntered([MouseEvent](../../../../java/awt/event/MouseEvent.html "class in java.awt.event") 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](../../../../java/awt/event/MouseListener.html#mouseEntered-java.awt.event.MouseEvent-)` in interface `[MouseListener](../../../../java/awt/event/MouseListener.html "interface in java.awt.event")`  
    Parameters:  
    `e` \- the mouse event; not used  
    * #### mouseExited  
    public void mouseExited([MouseEvent](../../../../java/awt/event/MouseEvent.html "class in java.awt.event") e)  
    Invoked when the mouse exits a component.  
    Specified by:  
    `[mouseExited](../../../../java/awt/event/MouseListener.html#mouseExited-java.awt.event.MouseEvent-)` in interface `[MouseListener](../../../../java/awt/event/MouseListener.html "interface in java.awt.event")`  
    * #### mouseDragged  
    public void mouseDragged([MouseEvent](../../../../java/awt/event/MouseEvent.html "class in java.awt.event") e)  
    Invoked when a mouse button is pressed on the menu and then dragged. Delegates the mouse event to the MenuSelectionManager.  
    Specified by:  
    `[mouseDragged](../../../../java/awt/event/MouseMotionListener.html#mouseDragged-java.awt.event.MouseEvent-)` in interface `[MouseMotionListener](../../../../java/awt/event/MouseMotionListener.html "interface in java.awt.event")`  
    Parameters:  
    `e` \- the mouse event  
    See Also:  
    [MouseMotionListener.mouseDragged(java.awt.event.MouseEvent)](../../../../java/awt/event/MouseMotionListener.html#mouseDragged-java.awt.event.MouseEvent-)  
    * #### mouseMoved  
    public void mouseMoved([MouseEvent](../../../../java/awt/event/MouseEvent.html "class in java.awt.event") e)  
    Invoked when the mouse cursor has been moved onto a component but no buttons have been pushed.  
    Specified by:  
    `[mouseMoved](../../../../java/awt/event/MouseMotionListener.html#mouseMoved-java.awt.event.MouseEvent-)` in interface `[MouseMotionListener](../../../../java/awt/event/MouseMotionListener.html "interface in java.awt.event")`

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