Java Swing Focus focusFirstFocusableComponent(Component c)

Description

focus First Focusable Component

License

Open Source License

Declaration

public static boolean focusFirstFocusableComponent(Component c) 

Method Source Code

//package com.java2s;
/*/*from www.  j  a v a2 s .  c om*/
 * Copyright appNativa Inc. All Rights Reserved.
 *
 * This file is part of the Real-time Application Rendering Engine (RARE).
 *
 * RARE 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

import java.awt.Component;

import java.awt.Container;

import javax.swing.JComponent;

public class Main {
    public static boolean focusFirstFocusableComponent(Component c) {
        if (c == null) {
            return false;
        }

        if (c instanceof JComponent) {
            if (((JComponent) c).isRequestFocusEnabled() && c.requestFocusInWindow()) {
                return true;
            }
        }

        if (c.isFocusable() && c.requestFocusInWindow()) {
            return true;
        }

        if (!(c instanceof Container)) {
            return false;
        }

        return focusFirstFocusableChild((Container) c);
    }

    private static boolean focusFirstFocusableChild(Container c) {
        int len = c.getComponentCount();

        for (int i = 0; i < len; i++) {
            if (focusFirstFocusableComponent(c)) {
                return true;
            }
        }

        return false;
    }
}

Related

1. createWizardFocusAdapter()
2. focusComponent(Component comp)
3. focusComponentOrChild(Component c)
4. focusComponentOrChild(Component c, boolean deepest)
5. focusFirstFocusableChild(Container c)
6. focusLater(final Component component)
7. focusLater(final Component component)
8. focusOnOpen(final JComponent component)
9. getFocusableComponentOrChild(Component c, boolean deepest)