Module java.desktop
Package java.awt.event

Class WindowAdapter

  • All Implemented Interfaces:
    WindowFocusListener, WindowListener, WindowStateListener, EventListener
    Direct Known Subclasses:
    BasicToolBarUI.FrameListener, JMenu.WinListener
    public abstract class WindowAdapter
extends Object
implements WindowListener, WindowStateListener, WindowFocusListener
    An abstract adapter class for receiving window events. The methods in this class are empty. This class exists as convenience for creating listener objects.

    Extend this class to create a WindowEvent listener and override the methods for the events of interest. (If you implement the WindowListener interface, you have to define all of the methods in it. This abstract class defines null methods for them all, so you can only have to define methods for events you care about.)

    Create a listener object using the extended class and then register it with a Window using the window's addWindowListener method. When the window's status changes by virtue of being opened, closed, activated or deactivated, iconified or deiconified, the relevant method in the listener object is invoked, and the WindowEvent is passed to it.

    Since:
    1.1
    See Also:
    WindowEvent, WindowListener, Tutorial: Writing a Window Listener

    • Constructor Detail

      • WindowAdapter

        public WindowAdapter()

    • Method Detail

      • windowOpened

        public void windowOpened​(WindowEvent e)
        Invoked when a window has been opened.
        Specified by:
        windowOpened in interface WindowListener
        Parameters:
        e - the event to be processed

      • windowClosing

        public void windowClosing​(WindowEvent e)
        Invoked when a window is in the process of being closed. The close operation can be overridden at this point.
        Specified by:
        windowClosing in interface WindowListener
        Parameters:
        e - the event to be processed

      • windowClosed

        public void windowClosed​(WindowEvent e)
        Invoked when a window has been closed.
        Specified by:
        windowClosed in interface WindowListener
        Parameters:
        e - the event to be processed

      • windowDeiconified

        public void windowDeiconified​(WindowEvent e)
        Invoked when a window is de-iconified.
        Specified by:
        windowDeiconified in interface WindowListener
        Parameters:
        e - the event to be processed

      • windowActivated

        public void windowActivated​(WindowEvent e)
        Invoked when a window is activated.
        Specified by:
        windowActivated in interface WindowListener
        Parameters:
        e - the event to be processed

      • windowDeactivated

        public void windowDeactivated​(WindowEvent e)
        Invoked when a window is de-activated.
        Specified by:
        windowDeactivated in interface WindowListener
        Parameters:
        e - the event to be processed

      • windowGainedFocus

        public void windowGainedFocus​(WindowEvent e)
        Invoked when the Window is set to be the focused Window, which means that the Window, or one of its subcomponents, will receive keyboard events.
        Specified by:
        windowGainedFocus in interface WindowFocusListener
        Parameters:
        e - the event to be processed
        Since:
        1.4

      • windowLostFocus

        public void windowLostFocus​(WindowEvent e)
        Invoked when the Window is no longer the focused Window, which means that keyboard events will no longer be delivered to the Window or any of its subcomponents.
        Specified by:
        windowLostFocus in interface WindowFocusListener
        Parameters:
        e - the event to be processed
        Since:
        1.4