Java example source code file (CommonUI.java)

This example Java source code file (CommonUI.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

actionlistener, awt, dimension, event, gui, integer, jbutton, jcheckbox, jcombobox, jframe, jlabel, jradiobutton, jscrollpane, jtextfield, numberdocument, string, stringtokenizer, swing, text, util

The CommonUI.java Java example source code

/*
 * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */


package com.sun.java.swing.ui;

import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.KeyListener;
import java.util.StringTokenizer;
import java.util.Vector;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.text.*;

public class CommonUI
{
    private static class NumberDocument extends PlainDocument
    {

        public void insertString(int offs, String str, AttributeSet atts)
            throws BadLocationException
        {
            if(!Character.isDigit(str.charAt(0)))
            {
                return;
            } else
            {
                super.insertString(offs, str, atts);
                return;
            }
        }

        private NumberDocument()
        {
        }

    }


    public CommonUI()
    {
    }

    public static JLabel createLabel(String text, int mnemonic, Component comp)
    {
        JLabel label = new JLabel("  " + text);
        label.setMinimumSize(labelPrefSize);
        if(mnemonic != -1)
            label.setDisplayedMnemonic(mnemonic);
        if(comp != null)
            label.setLabelFor(comp);
        if(text.length() == 0)
            label.setPreferredSize(labelPrefSize);
        return label;
    }

    public static JLabel createLabel(String text)
    {
        return createLabel(text, -1, null);
    }

    public static JTextField createTextField(String text, KeyListener listener, boolean numbers)
    {
        JTextField field = new JTextField(text);
        field.setMinimumSize(textPrefSize);
        if(text.length() == 0)
            field.setPreferredSize(textPrefSize);
        if(listener != null)
            field.addKeyListener(listener);
        if(numbers)
            field.setDocument(new NumberDocument());
        return field;
    }

    public static JTextField createTextField(String text, boolean numbers)
    {
        return createTextField(text, null, numbers);
    }

    public static JTextField createTextField(String text, KeyListener listener)
    {
        return createTextField(text, listener, false);
    }

    public static JTextField createTextField(String text)
    {
        return createTextField(text, null, false);
    }

    public static JRadioButton createRadioButton(String text, int mnemonic, ActionListener listener, boolean selected)
    {
        JRadioButton button = new JRadioButton(text);
        button.setMnemonic(mnemonic);
        button.setSelected(selected);
        button.setMinimumSize(labelPrefSize);
        if(listener != null)
            button.addActionListener(listener);
        if(text.length() == 0)
            button.setPreferredSize(labelPrefSize);
        return button;
    }

    public static JRadioButton createRadioButton(String text, int mnemonic, boolean selected)
    {
        return createRadioButton(text, mnemonic, null, selected);
    }

    public static JRadioButton createRadioButton(String text, int mnemonic, ActionListener listener)
    {
        return createRadioButton(text, mnemonic, listener, false);
    }

    public static JRadioButton createRadioButton(String text, int mnemonic)
    {
        return createRadioButton(text, mnemonic, null, false);
    }

    public static JRadioButton createRadioButton(String text)
    {
        return createRadioButton(text, -1, null, false);
    }

    public static JCheckBox createCheckBox(String text, int mnemonic, ActionListener listener, boolean selected)
    {
        JCheckBox checkbox = new JCheckBox(text);
        checkbox.setMinimumSize(labelPrefSize);
        if(mnemonic != -1)
            checkbox.setMnemonic(mnemonic);
        checkbox.setSelected(selected);
        if(text.length() == 0)
            checkbox.setPreferredSize(labelPrefSize);
        if(listener != null)
            checkbox.addActionListener(listener);
        return checkbox;
    }

    public static JCheckBox createCheckBox(String text, int mnemonic, ActionListener listener)
    {
        return createCheckBox(text, mnemonic, listener, false);
    }

    public static JCheckBox createCheckBox(String text, int mnemonic, boolean selected)
    {
        return createCheckBox(text, mnemonic, null, selected);
    }

    public static JCheckBox createCheckBox(String text, int mnemonic)
    {
        return createCheckBox(text, mnemonic, null, false);
    }

    public static JCheckBox createCheckBox(String text)
    {
        return createCheckBox(text, -1, null, false);
    }

    public static JComboBox createComboBox(Object items[], ActionListener listener, boolean editable)
    {
        JComboBox comboBox = new JComboBox(items);
        if(listener != null)
            comboBox.addActionListener(listener);
        comboBox.setEditable(editable);
        return comboBox;
    }

    public static JComboBox createComboBox(Object items[], boolean editable)
    {
        return createComboBox(items, null, editable);
    }

    public static JComboBox createComboBox(Vector items, ActionListener listener, boolean editable)
    {
        JComboBox comboBox = new JComboBox(items);
        if(listener != null)
            comboBox.addActionListener(listener);
        comboBox.setEditable(editable);
        return comboBox;
    }

    public static JComboBox createComboBox(Vector items, boolean editable)
    {
        return createComboBox(items, null, editable);
    }

    public static JButton createButton(Action action)
    {
        JButton button = new JButton(action);
        setButtonSize(button, buttonPrefSize);
        return button;
    }

    public static JButton createButton(String text, ActionListener listener, int mnemonic)
    {
        JButton button = new JButton(text);
        if(listener != null)
            button.addActionListener(listener);
        if(mnemonic != -1)
            button.setMnemonic(mnemonic);
        setButtonSize(button, buttonPrefSize);
        return button;
    }

    private static void setButtonSize(JButton button, Dimension size)
    {
        String text = button.getText();
        button.setMinimumSize(size);
        if(text.length() == 0)
        {
            button.setPreferredSize(size);
        } else
        {
            Dimension psize = button.getPreferredSize();
            if(psize.width < size.width)
                button.setPreferredSize(size);
        }
    }

    public static JButton createButton(String text, ActionListener listener)
    {
        return createButton(text, listener, -1);
    }

    public static JButton createSmallButton(String text, ActionListener listener, int mnemonic)
    {
        JButton button = createButton(text, listener, mnemonic);
        setButtonSize(button, smbuttonPrefSize);
        return button;
    }

    public static JButton createSmallButton(String text, ActionListener listener)
    {
        return createSmallButton(text, listener, -1);
    }

    public static Border createBorder(String text)
    {
        Border border = BorderFactory.createEtchedBorder();
        return BorderFactory.createTitledBorder(border, text, 0, 2);
    }

    public static Border createBorder()
    {
        return BorderFactory.createEmptyBorder(4, 4, 4, 4);
    }

    public static JScrollPane createListPane(JList list, String text)
    {
        JScrollPane pane = new JScrollPane(list);
        pane.setBorder(BorderFactory.createCompoundBorder(createBorder(text), BorderFactory.createLoweredBevelBorder()));
        return pane;
    }

    public static void centerComponent(Component source, Component parent)
    {
        Dimension dim = source.getSize();
        Rectangle rect;
        if(parent != null)
        {
            rect = parent.getBounds();
        } else
        {
            Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
            rect = new Rectangle(0, 0, d.width, d.height);
        }
        int x = rect.x + (rect.width - dim.width) / 2;
        int y = rect.y + (rect.height - dim.height) / 2;
        source.setLocation(x, y);
    }

    public static void centerComponent(Component source)
    {
        centerComponent(source, null);
    }

    public static JFrame getParentFrame(Component source)
    {
        Container parent;
        for(parent = source.getParent(); parent != null; parent = parent.getParent())
            if(parent instanceof JFrame)
                break;

        if(parent == null)
            return null;
        else
            return (JFrame)parent;
    }

    public static Integer msToSec(Integer ms)
    {
        int value = ms.intValue();
        value /= 1000;
        return new Integer(value);
    }

    public static Integer secToMs(Integer sec)
    {
        int value = sec.intValue();
        value *= 1000;
        return new Integer(value);
    }

    public static String stringFromStringArray(String strings[], String delim)
    {
        String string = "";
        String separator;
        if(delim == null || delim.equals(""))
            separator = " ";
        else
            separator = delim;
        for(int i = 0; i < strings.length; i++)
        {
            string = string + strings[i];
            string = string + separator;
        }

        return string;
    }

    public static String stringFromStringArray(String strings[])
    {
        return stringFromStringArray(strings, "");
    }

    public static String[] stringArrayFromString(String string, String delim)
    {
        StringTokenizer st;
        if(delim == null || delim.equals(""))
            st = new StringTokenizer(string);
        else
            st = new StringTokenizer(string, delim);
        int numTokens = st.countTokens();
        String strings[] = new String[numTokens];
        int index = 0;
        while(st.hasMoreTokens())
            strings[index++] = st.nextToken();
        return strings;
    }

    public static String[] stringArrayFromString(String string)
    {
        return stringArrayFromString(string, "");
    }

    public static void setWaitCursor(Component comp)
    {
        comp.setCursor(Cursor.getPredefinedCursor(3));
    }

    public static void setDefaultCursor(Component comp)
    {
        comp.setCursor(Cursor.getPredefinedCursor(0));
    }

    public static final int BUTTON_WIDTH = 100;
    public static final int BUTTON_HEIGHT = 26;
    public static final int BUTTCON_WIDTH = 28;
    public static final int BUTTCON_HEIGHT = 28;
    public static final int SM_BUTTON_WIDTH = 72;
    public static final int SM_BUTTON_HEIGHT = 26;
    public static final int LABEL_WIDTH = 100;
    public static final int LABEL_HEIGHT = 20;
    public static final int TEXT_WIDTH = 150;
    public static final int TEXT_HEIGHT = 20;
    public static Dimension buttonPrefSize = new Dimension(100, 26);
    public static Dimension buttconPrefSize = new Dimension(28, 28);
    public static Dimension smbuttonPrefSize = new Dimension(72, 26);
    public static Dimension labelPrefSize = new Dimension(100, 20);
    public static Dimension textPrefSize = new Dimension(150, 20);

}