Java™ Platform
Standard Ed. 6

javax.swing
Interface DesktopManager

All Known Implementing Classes:
DefaultDesktopManager

public interface DesktopManager

DesktopManager objects are owned by a JDesktopPane object. They are responsible for implementing L&F specific behaviors for the JDesktopPane. JInternalFrame implementations should delegate specific behaviors to the DesktopManager. For instance, if a JInternalFrame was asked to iconify, it should try:

    getDesktopPane().getDesktopManager().iconifyFrame(frame);
 
This delegation allows each L&F to provide custom behaviors for desktop-specific actions. (For example, how and where the internal frame's icon would appear.)

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, JInternalFrame.JDesktopIcon

Method Summary
 void activateFrame(JInternalFrame f)
          Generally, indicate that this frame has focus.
 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)
          Generally, this call should remove the frame from it's parent.
 void deactivateFrame(JInternalFrame f)
          Generally, indicate that this frame has lost focus.
 void deiconifyFrame(JInternalFrame f)
          Generally, remove any iconic representation that is present and restore the frame to it's original size and location.
 void dragFrame(JComponent f, int newX, int newY)
          The user has moved the frame.
 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.
 void iconifyFrame(JInternalFrame f)
          Generally, remove this frame from it's parent and add an iconic representation.
 void maximizeFrame(JInternalFrame f)
          Generally, the frame should be resized to match it's parents bounds.
 void minimizeFrame(JInternalFrame f)
          Generally, this indicates that the frame should be restored to it's size and position prior to a maximizeFrame() call.
 void openFrame(JInternalFrame f)
          If possible, display this frame in an appropriate location.
 void resizeFrame(JComponent f, int newX, int newY, int newWidth, int newHeight)
          The user has resized the component.
 void setBoundsForFrame(JComponent f, int newX, int newY, int newWidth, int newHeight)
          This is a primitive reshape method.
 

Method Detail

openFrame

void openFrame(JInternalFrame f)
If possible, display this frame in an appropriate location. Normally, this is not called, as the creator of the JInternalFrame will add the frame to the appropriate parent.


closeFrame

void closeFrame(JInternalFrame f)
Generally, this call should remove the frame from it's parent.


maximizeFrame

void maximizeFrame(JInternalFrame f)
Generally, the frame should be resized to match it's parents bounds.


minimizeFrame

void minimizeFrame(JInternalFrame f)
Generally, this indicates that the frame should be restored to it's size and position prior to a maximizeFrame() call.


iconifyFrame

void iconifyFrame(JInternalFrame f)
Generally, remove this frame from it's parent and add an iconic representation.


deiconifyFrame

void deiconifyFrame(JInternalFrame f)
Generally, remove any iconic representation that is present and restore the frame to it's original size and location.


activateFrame

void activateFrame(JInternalFrame f)
Generally, indicate that this frame has focus. This is usually called after the JInternalFrame's IS_SELECTED_PROPERTY has been set to true.


deactivateFrame

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.


beginDraggingFrame

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.


dragFrame

void dragFrame(JComponent f,
               int newX,
               int newY)
The user has moved the frame. Calls to this method will be preceded by calls to beginDraggingFrame(). Normally f will be a JInternalFrame.


endDraggingFrame

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.


beginResizingFrame

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.


resizeFrame

void resizeFrame(JComponent f,
                 int newX,
                 int newY,
                 int newWidth,
                 int newHeight)
The user has resized the component. Calls to this method will be preceded by calls to beginResizingFrame(). Normally f will be a JInternalFrame.


endResizingFrame

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.


setBoundsForFrame

void setBoundsForFrame(JComponent f,
                       int newX,
                       int newY,
                       int newWidth,
                       int newHeight)
This is a primitive reshape method.


Java™ Platform
Standard Ed. 6

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