Module java.desktop
Package 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.

    Since:
    1.2
    See Also:
    JDesktopPane, JInternalFrame, Serialized Form

    • Constructor Detail

      • DefaultDesktopManager

        public DefaultDesktopManager()

    • Method Detail

      • openFrame

        public void openFrame​(JInternalFrame f)
        Normally this method will not be called. If it is, it tries 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
        Parameters:
        f - the JInternalFrame to be displayed

      • 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

      • 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
        Parameters:
        f - the JComponent being dragged
        newX - the new x-coordinate
        newY - the new y-coordinate

      • 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

      • 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
        Parameters:
        f - the JComponent being moved or resized
        newX - the new x-coordinate
        newY - the new y-coordinate
        newWidth - the new width
        newHeight - the new height

      • removeIconFor

        protected void removeIconFor​(JInternalFrame f)
        Convenience method to remove the desktopIcon of f is necessary.
        Parameters:
        f - the JInternalFrame for which to remove the desktopIcon

      • getBoundsForIconOf

        protected Rectangle getBoundsForIconOf​(JInternalFrame f)
        The iconifyFrame() code calls this to determine the proper bounds for the desktopIcon.
        Parameters:
        f - the JInternalFrame of interest
        Returns:
        a Rectangle containing 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.
        Parameters:
        f - the JInternalFrame of interest
        value - a Boolean signifying if component has been iconized

      • 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