DefaultDesktopManager (Java Platform SE 8 )

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.

See Also:

JDesktopPane, JInternalFrame

Constructor Summary

Constructors
Constructor and Description

DefaultDesktopManager()

Constructors
Constructor and Description
`DefaultDesktopManager()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`activateFrame(JInternalFrame f)` This will activate f moving it to the front.
`void`	`beginDraggingFrame(JComponent f)` This method is normally called when the user has indicated that they will begin dragging a component around.
`void`	`beginResizingFrame(JComponent f, int direction)` This methods is normally called when the user has indicated that they will begin resizing the frame.
`void`	`closeFrame(JInternalFrame f)` Removes the frame, and, if necessary, the `desktopIcon`, from its parent.
`void`	`deactivateFrame(JInternalFrame f)` Generally, indicate that this frame has lost focus.
`void`	`deiconifyFrame(JInternalFrame f)` Removes the desktopIcon from its parent and adds its frame to the parent.
`void`	`dragFrame(JComponent f, int newX, int newY)` Moves the visible location of the frame being dragged to the location specified.
`void`	`endDraggingFrame(JComponent f)` This method signals the end of the dragging session.
`void`	`endResizingFrame(JComponent f)` This method signals the end of the resize session.
`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.
`void`	`iconifyFrame(JInternalFrame f)` Removes the frame from its parent and adds its `desktopIcon` to the parent.
`void`	`maximizeFrame(JInternalFrame f)` Resizes the frame to fill its parents bounds.
`void`	`minimizeFrame(JInternalFrame f)` Restores the frame back to its size and position prior to a `maximizeFrame` call.
`void`	`openFrame(JInternalFrame f)` Normally this method will not be called.
`protected void`	`removeIconFor(JInternalFrame f)` Convenience method to remove the desktopIcon of f is necessary.
`void`	`resizeFrame(JComponent f, int newX, int newY, int newWidth, int newHeight)` Calls `setBoundsForFrame` with the new values.
`void`	`setBoundsForFrame(JComponent f, int newX, int newY, int newWidth, int newHeight)` This moves the `JComponent` and repaints the damaged areas.
`protected void`	`setPreviousBounds(JInternalFrame f, Rectangle r)` Stores the bounds of the component just before a maximize call.
`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`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 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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Class DefaultDesktopManager

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DefaultDesktopManager

Method Detail

openFrame

closeFrame

maximizeFrame

minimizeFrame

iconifyFrame

deiconifyFrame

activateFrame

deactivateFrame

beginDraggingFrame

dragFrame

endDraggingFrame

beginResizingFrame

resizeFrame

endResizingFrame

setBoundsForFrame

removeIconFor

getBoundsForIconOf

setPreviousBounds

getPreviousBounds

setWasIcon

wasIcon