| java.lang.Object | |
| ↳ | javax.swing.DefaultDesktopManager |
 Known Direct Subclasses
|
Class Overview
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
Summary
| Public Constructors | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Public Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
This will activate f moving it to the front.
| |||||||||||
This method is normally called when the user has indicated that
they will begin dragging a component around.
| |||||||||||
This methods is normally called when the user has indicated that
they will begin resizing the frame.
| |||||||||||
Removes the frame, and, if necessary, the
desktopIcon, from its parent. | |||||||||||
Generally, indicate that this frame has lost focus.
| |||||||||||
Removes the desktopIcon from its parent and adds its frame
to the parent.
| |||||||||||
Moves the visible location of the frame being dragged
to the location specified.
| |||||||||||
This method signals the end of the dragging session.
| |||||||||||
This method signals the end of the resize session.
| |||||||||||
Removes the frame from its parent and adds its
desktopIcon to the parent. | |||||||||||
Resizes the frame to fill its parents bounds.
| |||||||||||
Restores the frame back to its size and position prior
to a
maximizeFrame call. | |||||||||||
Normally this method will not be called.
| |||||||||||
Calls
setBoundsForFrame with the new values. | |||||||||||
This moves the
JComponent and repaints the damaged areas. | |||||||||||
| Protected Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
The iconifyFrame() code calls this to determine the proper bounds
for the desktopIcon.
| |||||||||||
Gets the normal bounds of the component prior to the component
being maximized.
| |||||||||||
Convenience method to remove the desktopIcon of f is necessary.
| |||||||||||
Stores the bounds of the component just before a maximize call.
| |||||||||||
Sets that the component has been iconized and the bounds of the
desktopIcon are valid. | |||||||||||
Returns
true if the component has been iconized
and the bounds of the desktopIcon are valid,
otherwise returns false. | |||||||||||
|
[Expand]
Inherited Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
From class
java.lang.Object
| |||||||||||
|
From interface
javax.swing.DesktopManager
| |||||||||||
Public Constructors
public DefaultDesktopManager ()
Public Methods
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
|
|---|
public void beginDraggingFrame (JComponent f)
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.
public void beginResizingFrame (JComponent f, int direction)
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.
public void closeFrame (JInternalFrame f)
Removes the frame, and, if necessary, the
desktopIcon, from its parent.
Parameters
| f | the JInternalFrame to be removed
|
|---|
public void deactivateFrame (JInternalFrame f)
Generally, indicate that this frame has lost focus. This is usually called after the JInternalFrame's IS_SELECTED_PROPERTY has been set to false.
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
|
|---|
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.
public void endDraggingFrame (JComponent f)
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.
public void endResizingFrame (JComponent f)
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.
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
|
|---|
public void maximizeFrame (JInternalFrame f)
Resizes the frame to fill its parents bounds.
Parameters
| f | the frame to be resized |
|---|
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
|
|---|
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.
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 |
public void setBoundsForFrame (JComponent f, int newX, int newY, int newWidth, int newHeight)
This moves the JComponent and repaints the damaged areas.
Protected Methods
protected Rectangle getBoundsForIconOf (JInternalFrame f)
The iconifyFrame() code calls this to determine the proper bounds for the desktopIcon.
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
protected void removeIconFor (JInternalFrame f)
Convenience method to remove the desktopIcon of f is necessary.
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 |
protected void setWasIcon (JInternalFrame f, Boolean value)
Sets that the component has been iconized and the bounds of the
desktopIcon are valid.
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
trueif the component has been iconized; otherwise returnsfalse