Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

Eclipse Draw2d
3.3

org.eclipse.draw2d
Class FocusTraverseManager

java.lang.Object
  extended by
org.eclipse.draw2d.FocusTraverseManager

public class FocusTraverseManager
extends java.lang.Object

This class is a helper to the SWTEventDispatcher. It handles the task of determining which Figure will gain focus upon a tab/shift-tab. It also keeps track of the Figure with current focus.

Note: When a Canvas with a LightweightSystem gains focus, it gives focus to the child Figure who had focus when this Canvas lost focus. If the canvas is gaining focus for the first time, focus is given to its first child Figure.


Constructor Summary
FocusTraverseManager ()
          Default constructor.
 
Method Summary
  IFigure getCurrentFocusOwner ()
           
  IFigure getNextFocusableFigure ( IFigure root, IFigure prevFocus)
          Returns the IFigure that will receive focus upon a 'tab' traverse event.
  IFigure getPreviousFocusableFigure ( IFigure root, IFigure prevFocus)
          Returns the IFigure that will receive focus upon a 'shift-tab' traverse event.
 void setCurrentFocusOwner ( IFigure fig)
          Sets the currently focused figure.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

FocusTraverseManager

public FocusTraverseManager()
Default constructor.

Method Detail

getNextFocusableFigure

public 
IFigure getNextFocusableFigure(
IFigure root,
                                      
IFigure prevFocus)
Returns the IFigure that will receive focus upon a 'tab' traverse event.

Parameters:
root - the LightweightSystem's root figure
prevFocus - the IFigure who currently owns focus
Returns:
the next focusable figure

getPreviousFocusableFigure

public 
IFigure getPreviousFocusableFigure(
IFigure root,
                                          
IFigure prevFocus)
Returns the IFigure that will receive focus upon a 'shift-tab' traverse event.

Parameters:
root - The LightweightSystem's root figure
prevFocus - The IFigure who currently owns focus
Returns:
the previous focusable figure

getCurrentFocusOwner

public 
IFigure getCurrentFocusOwner()
Returns:
the figure that currently has focus

setCurrentFocusOwner

public void setCurrentFocusOwner(
IFigure fig)
Sets the currently focused figure.

Parameters:
fig - the figure to get focus

Eclipse Draw2d
3.3

Copyright (c) IBM Corp. and others 2000, 2007. All Rights Reserved.

 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire