Sets the background color for the specified container and all the JPanel, JLabel, JCheckBox, JComboBox, JTextField, JRadioButton, and JScrollPane components that it contains to the same color. - Java Swing

Java examples for Swing:JComboBox

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Description

Sets the background color for the specified container and all the JPanel, JLabel, JCheckBox, JComboBox, JTextField, JRadioButton, and JScrollPane components that it contains to the same color.

Demo Code


//package com.java2s;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.util.Enumeration;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextField;

public class Main {
    /**/*from   w  w  w  .  jav  a 2 s  .  co  m*/
     * Sets the background color for the specified container and all the
     * JPanel, JLabel, JCheckBox, JComboBox, JTextField, JRadioButton, and
     * JScrollPane components that it contains to the same color.
     * 
     * @param c the container to set the background color of.
     * @param bg the background color.
     */
    public static void setBackground(Container c, Color bg) {
        c.setBackground(bg);
        Component[] children = c.getComponents();
        if (children == null) {
            return;
        }
        Component child;
        int len = children.length;
        if (bg != null) {
            for (int i = 0; i < len; i++) {
                child = children[i];
                if (!bg.equals(child.getBackground())
                        && ((child instanceof JPanel)
                                || (child instanceof JLabel)
                                || (child instanceof JCheckBox)
                                || (child instanceof JComboBox)
                                || (child instanceof JTextField)
                                || (child instanceof JRadioButton) || (child instanceof JScrollPane))) {
                    child.setBackground(bg);
                }
            }
        } else {
            // Null background color case
            for (int i = 0; i < len; i++) {
                child = children[i];
                if ((child.getBackground() != null)
                        && ((child instanceof JPanel)
                                || (child instanceof JLabel) || (child instanceof JCheckBox))) {
                    child.setBackground(null);
                } //end if
            } // end for
        } //end if else
    }

    /**
     * Sets the background color for the specified <code>ButtonGroup</code> and
     * all the JCheckBox, JComboBox, JButton, and JRadioButton components that 
     * it contains to the same color.
     * 
     * @param buttons the button group to set the background for.
     * @param bg the background color.
     */
    public static void setBackground(ButtonGroup buttons, Color bg) {
        Enumeration<?> children = buttons.getElements();
        if (children == null) {
            return;
        }
        Component child;

        if (bg != null) {
            while (children.hasMoreElements()) {
                child = (Component) children.nextElement();
                if (!bg.equals(child.getBackground())
                        && ((child instanceof JCheckBox)
                                || (child instanceof JComboBox)
                                || (child instanceof JButton) || (child instanceof JRadioButton))) {
                    child.setBackground(bg);
                }
            }
        }
    }
}

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