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javax.swing
Class DefaultDesktopManager

java.lang.Object
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 +--javax.swing.DefaultDesktopManager

All Implemented Interfaces:

DesktopManager, Serializable

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public class DefaultDesktopManager

extends Object

implements DesktopManager, Serializable

Unsafe: 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.

Version:

1.46 04/15/02

Author:

David Kloba, Steve Wilson

See Also:

JDesktopPane, JInternalFrame, Serialized Form

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HAS_BEEN_ICONIFIED_PROPERTY

static final String HAS_BEEN_ICONIFIED_PROPERTY

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DEFAULT_DRAG_MODE

static final int DEFAULT_DRAG_MODE

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OUTLINE_DRAG_MODE

static final int OUTLINE_DRAG_MODE

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FASTER_DRAG_MODE

static final int FASTER_DRAG_MODE

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dragMode

int dragMode

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currentBounds

private transient Rectangle currentBounds

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desktopGraphics

private transient Graphics desktopGraphics

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desktopBounds

private transient Rectangle desktopBounds

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floatingItems

private transient Rectangle[] floatingItems

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currentLoc

private transient Point currentLoc

DefaultDesktopManager

public DefaultDesktopManager()

Suppressed:

openFrame

public void openFrame(JInternalFrame f)

Suppressed: 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

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closeFrame

public void closeFrame(JInternalFrame f)

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

Specified by:

closeFrame in interface DesktopManager

Parameters:

f - the JInternalFrame to be removed

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maximizeFrame

public void maximizeFrame(JInternalFrame f)

Suppressed: Resizes the frame to fill its parents bounds.

Specified by:

maximizeFrame in interface DesktopManager

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minimizeFrame

public void minimizeFrame(JInternalFrame f)

Suppressed: 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

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iconifyFrame

public void iconifyFrame(JInternalFrame f)

Suppressed: 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

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activateNextFrame

void activateNextFrame(Container c)

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deiconifyFrame

public void deiconifyFrame(JInternalFrame f)

Suppressed: 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

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activateFrame

public void activateFrame(JInternalFrame f)

Suppressed: 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

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deactivateFrame

public void deactivateFrame(JInternalFrame f)

Suppressed:

Specified by:

deactivateFrame in interface DesktopManager

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beginDraggingFrame

public void beginDraggingFrame(JComponent f)

Suppressed:

Specified by:

beginDraggingFrame in interface DesktopManager

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setupDragMode

private void setupDragMode(JComponent f)

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dragFrame

public void dragFrame(JComponent f,
 int newX,
 int newY)

Suppressed: 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

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endDraggingFrame

public void endDraggingFrame(JComponent f)

Suppressed:

Specified by:

endDraggingFrame in interface DesktopManager

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beginResizingFrame

public void beginResizingFrame(JComponent f,
 int direction)

Suppressed:

Specified by:

beginResizingFrame in interface DesktopManager

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resizeFrame

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

Suppressed: 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

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endResizingFrame

public void endResizingFrame(JComponent f)

Suppressed:

Specified by:

endResizingFrame in interface DesktopManager

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setBoundsForFrame

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

Suppressed: This moves the JComponent and repaints the damaged areas.

Specified by:

setBoundsForFrame in interface DesktopManager

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removeIconFor

protected void removeIconFor(JInternalFrame f)

Convenience method to remove the desktopIcon of f is necessary.

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getBoundsForIconOf

protected Rectangle getBoundsForIconOf(JInternalFrame f)

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

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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

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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

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setWasIcon

protected void setWasIcon(JInternalFrame f,
 Boolean value)

Sets that the component has been iconized and the bounds of the desktopIcon are valid.

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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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getDesktopPane

JDesktopPane getDesktopPane(JComponent frame)

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dragFrameFaster

private void dragFrameFaster(JComponent f,
 int newX,
 int newY)

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isFloaterCollision

private boolean isFloaterCollision(Rectangle moveFrom,
 Rectangle moveTo)

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findFloatingItems

private Rectangle[] findFloatingItems(JComponent f)

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emergencyCleanup

private void emergencyCleanup(JComponent f)

This method is here to clean up problems associated with a race condition which can occur when the full contents of a copyArea's source argument is not available onscreen. This uses brute force to clean up in case of possible damage

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