Module java.desktop
Package 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.

Since:
1.2
See Also:

  • Constructor Details

    • DefaultDesktopManager

      public DefaultDesktopManager()
      Constructs a DefaultDesktopManager.

  • Method Details

    • openFrame

      public void openFrame(JInternalFrame f)
      Normally this method will not be called. If it is, it tries 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
      Parameters:
      f - the JInternalFrame to be displayed

    • 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
      Parameters:
      f - the JInternalFrame to be deactivated

    • 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
      Parameters:
      f - the JComponent being dragged

    • 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
      Parameters:
      f - the JComponent being dragged
      newX - the new x-coordinate
      newY - the new y-coordinate

    • 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
      Parameters:
      f - the JComponent being dragged

    • beginResizingFrame

      public void beginResizingFrame(JComponent f, int direction)
      Description copied from interface: DesktopManager
      This method 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
      Parameters:
      f - the JComponent being resized
      direction - the direction

    • 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
      Parameters:
      f - the JComponent being resized

    • 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
      Parameters:
      f - the JComponent being moved or resized
      newX - the new x-coordinate
      newY - the new y-coordinate
      newWidth - the new width
      newHeight - the new height

    • removeIconFor

      protected void removeIconFor(JInternalFrame f)
      Convenience method to remove the desktopIcon of f is necessary.
      Parameters:
      f - the JInternalFrame for which to remove the desktopIcon

    • getBoundsForIconOf

      protected Rectangle getBoundsForIconOf(JInternalFrame f)
      The iconifyFrame() code calls this to determine the proper bounds for the desktopIcon.
      Parameters:
      f - the JInternalFrame of interest
      Returns:
      a Rectangle containing 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.
      Parameters:
      f - the JInternalFrame of interest
      value - a Boolean signifying if component has been iconized

    • 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