home *** CD-ROM | disk | FTP | other *** search
Java Source | 1998-03-20 | 8.4 KB | 294 lines |
- /*
- * @(#)JToggleButton.java 1.26 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.event.*;
- import java.awt.swing.plaf.*;
- import java.awt.accessibility.*;
-
- /**
- * An implementation of a two-state button.
- * The <code>JRadioButton</code> and <code>JCheckbox</code> classes
- * are subclasses of this class.
- * <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 JRadioButton
- * @see JCheckbox
- * @version 1.26 02/12/98
- * @author Jeff Dinkins
- */
- public class JToggleButton extends AbstractButton implements Accessible {
-
- /**
- * Creates an initially unselected toggle button
- * without setting the text or image.
- */
- public JToggleButton () {
- this(null, null, false);
- }
-
- /**
- * Creates an initially unselected toggle button
- * with the specified image but no text.
- *
- * @param icon the image that the button should display
- */
- public JToggleButton(Icon icon) {
- this(null, icon, false);
- }
-
- /**
- * Creates a toggle 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 JToggleButton(Icon icon, boolean selected) {
- this(null, icon, selected);
- }
-
- /**
- * Creates an unselected toggle button with the specified text.
- *
- * @param text the string displayed on the toggle button
- */
- public JToggleButton (String text) {
- this(text, null, false);
- }
-
- /**
- * Creates a toggle button with the specified text
- * and selection state.
- *
- * @param text the string displayed on the toggle button
- * @param selected if true, the button is initially selected;
- * otherwise, the button is initially unselected
- */
- public JToggleButton (String text, boolean selected) {
- this(text, null, selected);
- }
-
- /**
- * Creates a toggle button that has the specified text and image,
- * and that is initially unselected.
- *
- * @param text the string displayed on the button
- * @param icon the image that the button should display
- */
- public JToggleButton(String text, Icon icon) {
- this(text, icon, false);
- }
-
- /**
- * Creates a toggle button with the specified text, image, and
- * selection state.
- *
- * @param text the text of the toggle button.
- * @param selected if true, the button is initially selected;
- * otherwise, the button is initially unselected
- */
- public JToggleButton (String text, Icon icon, boolean selected) {
- // Create the model
- setModel(new ToggleButtonModel());
-
- model.setSelected(selected);
-
- // initialize
- init(text, icon);
- }
-
- /**
- * Notification from the UIFactory that the L&F
- * has changed.
- *
- * @see JComponent#updateUI
- */
- public void updateUI() {
- setUI((ButtonUI)UIManager.getUI(this));
- }
-
- /**
- * Returns a string that specifies the name of the l&f class
- * that renders this component.
- *
- * @return String "ToggleButtonUI"
- * @see JComponent#getUIClassID
- * @see UIDefaults#getUI
- * @beaninfo
- * description: A string that specifies the name of the L&F class
- */
- public String getUIClassID() {
- return "ToggleButtonUI";
- }
-
-
-
-
- // *********************************************************************
-
- /**
- * The ToggleButton model
- * <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.
- */
- public static class ToggleButtonModel extends DefaultButtonModel {
-
- /**
- * Creates a new ToggleButton Model
- */
- public ToggleButtonModel () {
- }
-
- /**
- * Checks if the button is selected.
- */
- public boolean isSelected() {
- if(group != null) {
- return group.isSelected(this);
- } else {
- return (stateMask & SELECTED) != 0;
- }
- }
-
-
- /**
- * Sets the selected state of the button.
- * @param b true selects the toggle button,
- * false deselects the toggle button.
- */
- public void setSelected(boolean b) {
- // if (this.isSelected() == b) {
- // return;
- // }
-
- if(group != null) {
- // use the group model instead
- group.setSelected(this, b);
- } else {
- if (b) {
- stateMask |= SELECTED;
- } else {
- stateMask &= ~SELECTED;
- }
- }
-
- // Send ChangeEvent
- fireStateChanged();
-
- // Send ItemEvent
- fireItemStateChanged(
- new ItemEvent(this,
- ItemEvent.ITEM_STATE_CHANGED,
- this,
- this.isSelected() ? ItemEvent.SELECTED : ItemEvent.DESELECTED));
-
- }
-
- /**
- * Sets the pressed state of the toggle button.
- */
- public void setPressed(boolean b) {
- if ((isPressed() == b) || !isEnabled()) {
- return;
- }
-
- if (b == false && isArmed()) {
- setSelected(!this.isSelected());
- }
-
- if (b) {
- stateMask |= PRESSED;
- } else {
- stateMask &= ~PRESSED;
- }
-
- fireStateChanged();
-
- if(!isPressed() && isArmed()) {
- fireActionPerformed(
- new ActionEvent(this, ActionEvent.ACTION_PERFORMED,
- getActionCommand())
- );
- }
-
- }
- }
-
- /////////////////
- // Accessibility support
- ////////////////
-
- /**
- * Get the AccessibleContext associated with this JComponent
- *
- * @return the AccessibleContext of this JComponent
- * @beaninfo
- * expert: true
- * description: The AccessibleContext associated with this ToggleButton.
- */
- public AccessibleContext getAccessibleContext() {
- if (accessibleContext == null) {
- accessibleContext = new AccessibleJToggleButton();
- }
- 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 AccessibleJToggleButton extends AccessibleAbstractButton {
-
- /**
- * Get the role of this object.
- *
- * @return an instance of AccessibleRole describing the role of the
- * object
- */
- public AccessibleRole getAccessibleRole() {
- return AccessibleRole.TOGGLE_BUTTON;
- }
- } // inner class AccessibleJToggleButton
- }
-
-