javax.swing
class DefaultDesktopManager

java.lang.Object javax.swing.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.

DefaultDesktopManager

public DefaultDesktopManager()

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.

Parameters:

f - the JInternalFrame to be activated

beginDraggingFrame

public void beginDraggingFrame(JComponent f)

Parameters:

f

beginResizingFrame

public void beginResizingFrame(JComponent f,
                               int direction)

Parameters:

f

direction

closeFrame

public void closeFrame(JInternalFrame f)

Removes the frame, and, if necessary, the desktopIcon, from its parent.

Parameters:

f - the JInternalFrame to be removed

deactivateFrame

public void deactivateFrame(JInternalFrame f)

Parameters:

f

deiconifyFrame

public void deiconifyFrame(JInternalFrame f)

Removes the desktopIcon from its parent and adds its frame to the parent.

Parameters:

f - the JInternalFrame to be de-iconified

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.

Parameters:

f

newX

newY

endDraggingFrame

public void endDraggingFrame(JComponent f)

Parameters:

f

endResizingFrame

public void endResizingFrame(JComponent f)

Parameters:

f

getBoundsForIconOf

protected Rectangle getBoundsForIconOf(JInternalFrame f)

The iconifyFrame() code calls this to determine the proper bounds for the desktopIcon.

Parameters:

f

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

iconifyFrame

public void iconifyFrame(JInternalFrame f)

Removes the frame from its parent and adds its desktopIcon to the parent.

Parameters:

f - the JInternalFrame to be iconified

maximizeFrame

public void maximizeFrame(JInternalFrame f)

Resizes the frame to fill its parents bounds.

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.

Parameters:

f - the JInternalFrame to be restored

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.

Parameters:

f

removeIconFor

protected void removeIconFor(JInternalFrame f)

Convenience method to remove the desktopIcon of f is necessary.

Parameters:

f

resizeFrame

public void resizeFrame(JComponent f,
                        int newX,
                        int newY,
                        int newWidth,
                        int newHeight)

Calls setBoundsForFrame with the new values.

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.

Parameters:

f

newX

newY

newWidth

newHeight

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

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

value

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