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Java Standard Edition (SE)

DefaultDesktopManager


javax.swing

Class DefaultDesktopManager

  • All Implemented Interfaces:
    Serializable, DesktopManager


    public class DefaultDesktopManager
    extends Object
    implements DesktopManager, Serializable
    This is an implementation of the DesktopManager. It currently implements the basic behaviors for managing JInternalFrames in an arbitrary parent. JInternalFrames that are not children of a JDesktop will use this component to handle their desktop-like actions.

    This class provides a policy for the various JInternalFrame methods, it is not meant to be called directly rather the various JInternalFrame methods will call into the DesktopManager.

    See Also:
    JDesktopPane, JInternalFrame
    • Constructor Detail

      • DefaultDesktopManager

        public DefaultDesktopManager()
    • Method Detail

      • openFrame

        public void openFrame(JInternalFrame f)
        Normally this method will not be called. If it is, it try to determine the appropriate parent from the desktopIcon of the frame. Will remove the desktopIcon from its parent if it successfully adds the frame.
        Specified by:
        openFrame in interface DesktopManager
      • closeFrame

        public void closeFrame(JInternalFrame f)
        Removes the frame, and, if necessary, the desktopIcon, from its parent.
        Specified by:
        closeFrame in interface DesktopManager
        Parameters:
        f - the JInternalFrame to be removed
      • maximizeFrame

        public void maximizeFrame(JInternalFrame f)
        Resizes the frame to fill its parents bounds.
        Specified by:
        maximizeFrame in interface DesktopManager
        Parameters:
        f - the frame to be resized
      • minimizeFrame

        public void minimizeFrame(JInternalFrame f)
        Restores the frame back to its size and position prior to a maximizeFrame call.
        Specified by:
        minimizeFrame in interface DesktopManager
        Parameters:
        f - the JInternalFrame to be restored
      • iconifyFrame

        public void iconifyFrame(JInternalFrame f)
        Removes the frame from its parent and adds its desktopIcon to the parent.
        Specified by:
        iconifyFrame in interface DesktopManager
        Parameters:
        f - the JInternalFrame to be iconified
      • deiconifyFrame

        public void deiconifyFrame(JInternalFrame f)
        Removes the desktopIcon from its parent and adds its frame to the parent.
        Specified by:
        deiconifyFrame in interface DesktopManager
        Parameters:
        f - the JInternalFrame to be de-iconified
      • activateFrame

        public void activateFrame(JInternalFrame f)
        This will activate f moving it to the front. It will set the current active frame's (if any) IS_SELECTED_PROPERTY to false. There can be only one active frame across all Layers.
        Specified by:
        activateFrame in interface DesktopManager
        Parameters:
        f - the JInternalFrame to be activated
      • deactivateFrame

        public void deactivateFrame(JInternalFrame f)
        Description copied from interface: DesktopManager
        Generally, indicate that this frame has lost focus. This is usually called after the JInternalFrame's IS_SELECTED_PROPERTY has been set to false.
        Specified by:
        deactivateFrame in interface DesktopManager
      • beginDraggingFrame

        public void beginDraggingFrame(JComponent f)
        Description copied from interface: DesktopManager
        This method is normally called when the user has indicated that they will begin dragging a component around. This method should be called prior to any dragFrame() calls to allow the DesktopManager to prepare any necessary state. Normally f will be a JInternalFrame.
        Specified by:
        beginDraggingFrame in interface DesktopManager
      • dragFrame

        public void dragFrame(JComponent f,
                              int newX,
                              int newY)
        Moves the visible location of the frame being dragged to the location specified. The means by which this occurs can vary depending on the dragging algorithm being used. The actual logical location of the frame might not change until endDraggingFrame is called.
        Specified by:
        dragFrame in interface DesktopManager
      • endDraggingFrame

        public void endDraggingFrame(JComponent f)
        Description copied from interface: DesktopManager
        This method signals the end of the dragging session. Any state maintained by the DesktopManager can be removed here. Normally f will be a JInternalFrame.
        Specified by:
        endDraggingFrame in interface DesktopManager
      • beginResizingFrame

        public void beginResizingFrame(JComponent f,
                                       int direction)
        Description copied from interface: DesktopManager
        This methods is normally called when the user has indicated that they will begin resizing the frame. This method should be called prior to any resizeFrame() calls to allow the DesktopManager to prepare any necessary state. Normally f will be a JInternalFrame.
        Specified by:
        beginResizingFrame in interface DesktopManager
      • resizeFrame

        public void resizeFrame(JComponent f,
                                int newX,
                                int newY,
                                int newWidth,
                                int newHeight)
        Calls setBoundsForFrame with the new values.
        Specified by:
        resizeFrame in interface DesktopManager
        Parameters:
        f - the component to be resized
        newX - the new x-coordinate
        newY - the new y-coordinate
        newWidth - the new width
        newHeight - the new height
      • endResizingFrame

        public void endResizingFrame(JComponent f)
        Description copied from interface: DesktopManager
        This method signals the end of the resize session. Any state maintained by the DesktopManager can be removed here. Normally f will be a JInternalFrame.
        Specified by:
        endResizingFrame in interface DesktopManager
      • setBoundsForFrame

        public void setBoundsForFrame(JComponent f,
                                      int newX,
                                      int newY,
                                      int newWidth,
                                      int newHeight)
        This moves the JComponent and repaints the damaged areas.
        Specified by:
        setBoundsForFrame in interface DesktopManager
      • removeIconFor

        protected void removeIconFor(JInternalFrame f)
        Convenience method to remove the desktopIcon of f is necessary.
      • getBoundsForIconOf

        protected Rectangle getBoundsForIconOf(JInternalFrame f)
        The iconifyFrame() code calls this to determine the proper bounds for the desktopIcon.
      • setPreviousBounds

        protected void setPreviousBounds(JInternalFrame f,
                                         Rectangle r)
        Stores the bounds of the component just before a maximize call.
        Parameters:
        f - the component about to be resized
        r - the normal bounds to be saved away
      • getPreviousBounds

        protected Rectangle getPreviousBounds(JInternalFrame f)
        Gets the normal bounds of the component prior to the component being maximized.
        Parameters:
        f - the JInternalFrame of interest
        Returns:
        the normal bounds of the component
      • setWasIcon

        protected void setWasIcon(JInternalFrame f,
                                  Boolean value)
        Sets that the component has been iconized and the bounds of the desktopIcon are valid.
      • wasIcon

        protected boolean wasIcon(JInternalFrame f)
        Returns true if the component has been iconized and the bounds of the desktopIcon are valid, otherwise returns false.
        Parameters:
        f - the JInternalFrame of interest
        Returns:
        true if the component has been iconized; otherwise returns false


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