Requests focus unless the component already has focus
import java.awt.Component;
import java.awt.KeyboardFocusManager;
/**
* Copyright (C) 2004 NNL Technology AB
* Visit www.infonode.net for information about InfoNode(R)
* products and how to contact NNL Technology AB.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
// $Id: ComponentUtil.java,v 1.25 2005/12/04 13:46:04 jesper Exp $
public class Util {
/**
* Requests focus unless the component already has focus. For some weird
* reason calling {@link Component#requestFocusInWindow()}when the
* component is focus owner changes focus owner to another component!
*
* @param component the component to request focus for
* @return true if the component has focus or probably will get focus,
* otherwise false
*/
public static boolean requestFocus(Component component) {
/*
* System.out.println("Owner: " +
* System.identityHashCode(KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner()) + ", " +
* System.identityHashCode(component) + ", " +
* (KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner() ==
* component));
*/
return KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner() == component ||
component.requestFocusInWindow();
}
}
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