--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.desktop/share/classes/javax/swing/DefaultButtonModel.java Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,536 @@
+/*
+ * Copyright (c) 1997, 2014, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 javax.swing;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.image.*;
+import java.io.Serializable;
+import java.util.EventListener;
+import javax.swing.event.*;
+
+/**
+ * The default implementation of a <code>Button</code> component's data model.
+ * <p>
+ * <strong>Warning:</strong>
+ * 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 applications running
+ * the same version of Swing. As of 1.4, support for long term storage
+ * of all JavaBeans™
+ * has been added to the <code>java.beans</code> package.
+ * Please see {@link java.beans.XMLEncoder}.
+ *
+ * @author Jeff Dinkins
+ * @since 1.2
+ */
+@SuppressWarnings("serial") // Same-version serialization only
+public class DefaultButtonModel implements ButtonModel, Serializable {
+
+ /** The bitmask used to store the state of the button. */
+ protected int stateMask = 0;
+
+ /** The action command string fired by the button. */
+ protected String actionCommand = null;
+
+ /** The button group that the button belongs to. */
+ protected ButtonGroup group = null;
+
+ /** The button's mnemonic. */
+ protected int mnemonic = 0;
+
+ /**
+ * Only one <code>ChangeEvent</code> is needed per button model
+ * instance since the event's only state is the source property.
+ * The source of events generated is always "this".
+ */
+ protected transient ChangeEvent changeEvent = null;
+
+ /** Stores the listeners on this model. */
+ protected EventListenerList listenerList = new EventListenerList();
+
+ // controls the usage of the MenuItem.disabledAreNavigable UIDefaults
+ // property in the setArmed() method
+ private boolean menuItem = false;
+
+ /**
+ * Constructs a <code>DefaultButtonModel</code>.
+ *
+ */
+ public DefaultButtonModel() {
+ stateMask = 0;
+ setEnabled(true);
+ }
+
+ /**
+ * Identifies the "armed" bit in the bitmask, which
+ * indicates partial commitment towards choosing/triggering
+ * the button.
+ */
+ public final static int ARMED = 1 << 0;
+
+ /**
+ * Identifies the "selected" bit in the bitmask, which
+ * indicates that the button has been selected. Only needed for
+ * certain types of buttons - such as radio button or check box.
+ */
+ public final static int SELECTED = 1 << 1;
+
+ /**
+ * Identifies the "pressed" bit in the bitmask, which
+ * indicates that the button is pressed.
+ */
+ public final static int PRESSED = 1 << 2;
+
+ /**
+ * Identifies the "enabled" bit in the bitmask, which
+ * indicates that the button can be selected by
+ * an input device (such as a mouse pointer).
+ */
+ public final static int ENABLED = 1 << 3;
+
+ /**
+ * Identifies the "rollover" bit in the bitmask, which
+ * indicates that the mouse is over the button.
+ */
+ public final static int ROLLOVER = 1 << 4;
+
+ /**
+ * {@inheritDoc}
+ */
+ public void setActionCommand(String actionCommand) {
+ this.actionCommand = actionCommand;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public String getActionCommand() {
+ return actionCommand;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean isArmed() {
+ return (stateMask & ARMED) != 0;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean isSelected() {
+ return (stateMask & SELECTED) != 0;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean isEnabled() {
+ return (stateMask & ENABLED) != 0;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean isPressed() {
+ return (stateMask & PRESSED) != 0;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean isRollover() {
+ return (stateMask & ROLLOVER) != 0;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void setArmed(boolean b) {
+ if(isMenuItem() &&
+ UIManager.getBoolean("MenuItem.disabledAreNavigable")) {
+ if ((isArmed() == b)) {
+ return;
+ }
+ } else {
+ if ((isArmed() == b) || !isEnabled()) {
+ return;
+ }
+ }
+
+ if (b) {
+ stateMask |= ARMED;
+ } else {
+ stateMask &= ~ARMED;
+ }
+
+ fireStateChanged();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void setEnabled(boolean b) {
+ if(isEnabled() == b) {
+ return;
+ }
+
+ if (b) {
+ stateMask |= ENABLED;
+ } else {
+ stateMask &= ~ENABLED;
+ // unarm and unpress, just in case
+ stateMask &= ~ARMED;
+ stateMask &= ~PRESSED;
+ }
+
+
+ fireStateChanged();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void setSelected(boolean b) {
+ if (this.isSelected() == b) {
+ return;
+ }
+
+ if (b) {
+ stateMask |= SELECTED;
+ } else {
+ stateMask &= ~SELECTED;
+ }
+
+ fireItemStateChanged(
+ new ItemEvent(this,
+ ItemEvent.ITEM_STATE_CHANGED,
+ this,
+ b ? ItemEvent.SELECTED : ItemEvent.DESELECTED));
+
+ fireStateChanged();
+
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ public void setPressed(boolean b) {
+ if((isPressed() == b) || !isEnabled()) {
+ return;
+ }
+
+ if (b) {
+ stateMask |= PRESSED;
+ } else {
+ stateMask &= ~PRESSED;
+ }
+
+ if(!isPressed() && isArmed()) {
+ int modifiers = 0;
+ AWTEvent currentEvent = EventQueue.getCurrentEvent();
+ if (currentEvent instanceof InputEvent) {
+ modifiers = ((InputEvent)currentEvent).getModifiers();
+ } else if (currentEvent instanceof ActionEvent) {
+ modifiers = ((ActionEvent)currentEvent).getModifiers();
+ }
+ fireActionPerformed(
+ new ActionEvent(this, ActionEvent.ACTION_PERFORMED,
+ getActionCommand(),
+ EventQueue.getMostRecentEventTime(),
+ modifiers));
+ }
+
+ fireStateChanged();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void setRollover(boolean b) {
+ if((isRollover() == b) || !isEnabled()) {
+ return;
+ }
+
+ if (b) {
+ stateMask |= ROLLOVER;
+ } else {
+ stateMask &= ~ROLLOVER;
+ }
+
+ fireStateChanged();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void setMnemonic(int key) {
+ mnemonic = key;
+ fireStateChanged();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public int getMnemonic() {
+ return mnemonic;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void addChangeListener(ChangeListener l) {
+ listenerList.add(ChangeListener.class, l);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void removeChangeListener(ChangeListener l) {
+ listenerList.remove(ChangeListener.class, l);
+ }
+
+ /**
+ * Returns an array of all the change listeners
+ * registered on this <code>DefaultButtonModel</code>.
+ *
+ * @return all of this model's <code>ChangeListener</code>s
+ * or an empty
+ * array if no change listeners are currently registered
+ *
+ * @see #addChangeListener
+ * @see #removeChangeListener
+ *
+ * @since 1.4
+ */
+ public ChangeListener[] getChangeListeners() {
+ return listenerList.getListeners(ChangeListener.class);
+ }
+
+ /**
+ * Notifies all listeners that have registered interest for
+ * notification on this event type. The event instance
+ * is created lazily.
+ *
+ * @see EventListenerList
+ */
+ protected void fireStateChanged() {
+ // Guaranteed to return a non-null array
+ Object[] listeners = listenerList.getListenerList();
+ // Process the listeners last to first, notifying
+ // those that are interested in this event
+ for (int i = listeners.length-2; i>=0; i-=2) {
+ if (listeners[i]==ChangeListener.class) {
+ // Lazily create the event:
+ if (changeEvent == null)
+ changeEvent = new ChangeEvent(this);
+ ((ChangeListener)listeners[i+1]).stateChanged(changeEvent);
+ }
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void addActionListener(ActionListener l) {
+ listenerList.add(ActionListener.class, l);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void removeActionListener(ActionListener l) {
+ listenerList.remove(ActionListener.class, l);
+ }
+
+ /**
+ * Returns an array of all the action listeners
+ * registered on this <code>DefaultButtonModel</code>.
+ *
+ * @return all of this model's <code>ActionListener</code>s
+ * or an empty
+ * array if no action listeners are currently registered
+ *
+ * @see #addActionListener
+ * @see #removeActionListener
+ *
+ * @since 1.4
+ */
+ public ActionListener[] getActionListeners() {
+ return listenerList.getListeners(ActionListener.class);
+ }
+
+ /**
+ * Notifies all listeners that have registered interest for
+ * notification on this event type.
+ *
+ * @param e the <code>ActionEvent</code> to deliver to listeners
+ * @see EventListenerList
+ */
+ protected void fireActionPerformed(ActionEvent e) {
+ // Guaranteed to return a non-null array
+ Object[] listeners = listenerList.getListenerList();
+ // Process the listeners last to first, notifying
+ // those that are interested in this event
+ for (int i = listeners.length-2; i>=0; i-=2) {
+ if (listeners[i]==ActionListener.class) {
+ // Lazily create the event:
+ // if (changeEvent == null)
+ // changeEvent = new ChangeEvent(this);
+ ((ActionListener)listeners[i+1]).actionPerformed(e);
+ }
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void addItemListener(ItemListener l) {
+ listenerList.add(ItemListener.class, l);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void removeItemListener(ItemListener l) {
+ listenerList.remove(ItemListener.class, l);
+ }
+
+ /**
+ * Returns an array of all the item listeners
+ * registered on this <code>DefaultButtonModel</code>.
+ *
+ * @return all of this model's <code>ItemListener</code>s
+ * or an empty
+ * array if no item listeners are currently registered
+ *
+ * @see #addItemListener
+ * @see #removeItemListener
+ *
+ * @since 1.4
+ */
+ public ItemListener[] getItemListeners() {
+ return listenerList.getListeners(ItemListener.class);
+ }
+
+ /**
+ * Notifies all listeners that have registered interest for
+ * notification on this event type.
+ *
+ * @param e the <code>ItemEvent</code> to deliver to listeners
+ * @see EventListenerList
+ */
+ protected void fireItemStateChanged(ItemEvent e) {
+ // Guaranteed to return a non-null array
+ Object[] listeners = listenerList.getListenerList();
+ // Process the listeners last to first, notifying
+ // those that are interested in this event
+ for (int i = listeners.length-2; i>=0; i-=2) {
+ if (listeners[i]==ItemListener.class) {
+ // Lazily create the event:
+ // if (changeEvent == null)
+ // changeEvent = new ChangeEvent(this);
+ ((ItemListener)listeners[i+1]).itemStateChanged(e);
+ }
+ }
+ }
+
+ /**
+ * Returns an array of all the objects currently registered as
+ * <code><em>Foo</em>Listener</code>s
+ * upon this model.
+ * <code><em>Foo</em>Listener</code>s
+ * are registered using the <code>add<em>Foo</em>Listener</code> method.
+ * <p>
+ * You can specify the <code>listenerType</code> argument
+ * with a class literal, such as <code><em>Foo</em>Listener.class</code>.
+ * For example, you can query a <code>DefaultButtonModel</code>
+ * instance <code>m</code>
+ * for its action listeners
+ * with the following code:
+ *
+ * <pre>ActionListener[] als = (ActionListener[])(m.getListeners(ActionListener.class));</pre>
+ *
+ * If no such listeners exist,
+ * this method returns an empty array.
+ *
+ * @param <T> the type of requested listeners
+ * @param listenerType the type of listeners requested;
+ * this parameter should specify an interface
+ * that descends from <code>java.util.EventListener</code>
+ * @return an array of all objects registered as
+ * <code><em>Foo</em>Listener</code>s
+ * on this model,
+ * or an empty array if no such
+ * listeners have been added
+ * @exception ClassCastException if <code>listenerType</code> doesn't
+ * specify a class or interface that implements
+ * <code>java.util.EventListener</code>
+ *
+ * @see #getActionListeners
+ * @see #getChangeListeners
+ * @see #getItemListeners
+ *
+ * @since 1.3
+ */
+ public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
+ return listenerList.getListeners(listenerType);
+ }
+
+ /** Overridden to return <code>null</code>. */
+ public Object[] getSelectedObjects() {
+ return null;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void setGroup(ButtonGroup group) {
+ this.group = group;
+ }
+
+ /**
+ * Returns the group that the button belongs to.
+ * Normally used with radio buttons, which are mutually
+ * exclusive within their group.
+ *
+ * @return the <code>ButtonGroup</code> that the button belongs to
+ *
+ * @since 1.3
+ */
+ public ButtonGroup getGroup() {
+ return group;
+ }
+
+ boolean isMenuItem() {
+ return menuItem;
+ }
+
+ void setMenuItem(boolean menuItem) {
+ this.menuItem = menuItem;
+ }
+}