home *** CD-ROM | disk | FTP | other *** search
Java Source | 1998-03-20 | 6.5 KB | 200 lines |
- /*
- * @(#)JRadioButton.java 1.40 98/02/12
- *
- * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
- *
- * This software is the confidential and proprietary information of Sun
- * Microsystems, Inc. ("Confidential Information"). You shall not disclose
- * such Confidential Information and shall use it only in accordance with the
- * terms of the license agreement you entered into with Sun.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
- * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
- * OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
- * LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR
- * ITS DERIVATIVES.
- *
- */
- package java.awt.swing;
-
- import java.awt.*;
- import java.awt.event.*;
- import java.awt.swing.plaf.*;
- import java.awt.swing.plaf.*;
- import java.awt.accessibility.*;
-
- /**
- * An implementation of a radio button -- an item that can be selected or
- * deselected, and which displays its state to the user.
- * Used with <code>ButtonGroup</code> to create a group of buttons
- * in which only one button at a time can be selected.
- * See <a href="http://java.sun.com/docs/books/tutorial/ui/swing/radiobutton.html">How to Use Radio Buttons</a>
- * in <a href="http://java.sun.com/Series/Tutorial/index.html"><em>The Java Tutorial</em></a>
- * for further documentation.
- * <p>
- * Warning: serialized objects of this class will not be compatible with
- * future swing releases. The current serialization support is appropriate
- * for short term storage or RMI between Swing1.0 applications. It will
- * not be possible to load serialized Swing1.0 objects with future releases
- * of Swing. The JDK1.2 release of Swing will be the compatibility
- * baseline for the serialized form of Swing objects.
- *
- * @beaninfo
- * attribute: isContainer false
- * @see ButtonGroup
- * @see JCheckBox
- * @version 1.40 02/12/98
- * @author Jeff Dinkins
- */
- public class JRadioButton extends JToggleButton implements Accessible {
-
- /**
- * Creates an initially unselected radio button
- * with no set text.
- */
- public JRadioButton () {
- this(null, null, false);
- }
-
- /**
- * Creates an initially unselected radio button
- * with the specified image but no text.
- *
- * @param icon the image that the button should display
- */
- public JRadioButton(Icon icon) {
- this(null, icon, false);
- }
-
- /**
- * Creates a radio button with the specified image
- * and selection state, but no text.
- *
- * @param icon the image that the button should display
- * @param selected if true, the button is initially selected;
- * otherwise, the button is initially unselected
- */
- public JRadioButton(Icon icon, boolean selected) {
- this(null, icon, selected);
- }
-
- /**
- * Creates an unselected radio button with the specified text.
- *
- * @param text the string displayed on the radio button
- */
- public JRadioButton (String text) {
- this(text, null, false);
- }
-
- /**
- * Creates a radio button with the specified text
- * and selection state.
- *
- * @param text the string displayed on the radio button
- * @param selected if true, the button is initially selected;
- * otherwise, the button is initially unselected
- */
- public JRadioButton (String text, boolean selected) {
- this(text, null, selected);
- }
-
- /**
- * Creates a radio button that has the specified text and image,
- * and that is initially unselected.
- *
- * @param text the string displayed on the radio button
- * @param icon the image that the button should display
- */
- public JRadioButton(String text, Icon icon) {
- this(text, icon, false);
- }
-
- /**
- * Creates a radio button that has the specified text, image,
- * and selection state.
- *
- * @param text the string displayed on the radio button
- * @param icon the image that the button should display
- */
- public JRadioButton (String text, Icon icon, boolean selected) {
- super(text, icon, selected);
- setBorderPainted(false);
- setHorizontalAlignment(LEFT);
- }
-
-
- /**
- * Notification from the UIFactory that the L&F
- * has changed.
- *
- * @see JComponent#updateUI
- */
- public void updateUI() {
- setUI((ButtonUI)UIManager.getUI(this));
- }
-
-
- /**
- * Returns the name of the L&F class
- * that renders this component.
- *
- * @return String "RadioButtonUI"
- * @see JComponent#getUIClassID
- * @see UIDefaults#getUI
- * @beaninfo
- * expert: true
- * description: A string that specifies the name of the L&F class.
- */
- public String getUIClassID() {
- return "RadioButtonUI";
- }
-
-
- /////////////////
- // Accessibility support
- ////////////////
-
-
- /**
- * Get the AccessibleContext associated with this JComponent
- *
- * @return the AccessibleContext of this JComponent
- * @beaninfo
- * expert: true
- * description: The AccessibleContext associated with this Button
- */
- public AccessibleContext getAccessibleContext() {
- if (accessibleContext == null) {
- accessibleContext = new AccessibleJRadioButton();
- }
- return accessibleContext;
- }
-
- /**
- * The class used to obtain the accessible role for this object.
- * <p>
- * Warning: serialized objects of this class will not be compatible with
- * future swing releases. The current serialization support is appropriate
- * for short term storage or RMI between Swing1.0 applications. It will
- * not be possible to load serialized Swing1.0 objects with future releases
- * of Swing. The JDK1.2 release of Swing will be the compatibility
- * baseline for the serialized form of Swing objects.
- */
- protected class AccessibleJRadioButton extends AccessibleJToggleButton {
-
- /**
- * Get the role of this object.
- *
- * @return an instance of AccessibleRole describing the role of the object
- * @see AccessibleRole
- */
- public AccessibleRole getAccessibleRole() {
- return AccessibleRole.RADIO_BUTTON;
- }
-
- } // inner class AccessibleJRadioButton
- }
-
-