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Diffstat (limited to 'libjava/javax/swing/DefaultButtonModel.java')
| -rw-r--r-- | libjava/javax/swing/DefaultButtonModel.java | 537 |
1 files changed, 0 insertions, 537 deletions
diff --git a/libjava/javax/swing/DefaultButtonModel.java b/libjava/javax/swing/DefaultButtonModel.java deleted file mode 100644 index d00e46d..0000000 --- a/libjava/javax/swing/DefaultButtonModel.java +++ /dev/null @@ -1,537 +0,0 @@ -/* DefaultButtonModel.java -- - Copyright (C) 2002, 2004 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath 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 for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package javax.swing; - -import java.awt.event.ActionEvent; -import java.awt.event.ActionListener; -import java.awt.event.ItemEvent; -import java.awt.event.ItemListener; -import java.awt.event.KeyEvent; -import java.io.Serializable; -import java.util.EventListener; - -import javax.swing.event.ChangeEvent; -import javax.swing.event.ChangeListener; -import javax.swing.event.EventListenerList; - -/** - * The purpose of this class is to model the dynamic state of an abstract - * button. The concrete button type holding this state may be a a "toggle" - * button (checkbox, radio button) or a "push" button (menu button, button). - * If the model is disabled, only the "selected" property can be changed. An - * attempt to change the "armed", "rollover" or "pressed" properties while - * the model is disabled will be blocked. Any successful (non-blocked) change - * to the model's properties will trigger the firing of a ChangeEvent. Any - * change to the "selected" property will trigger the firing of an ItemEvent - * in addition to ChangeEvent. This is true whether the model is enabled or - * not. One other state change is special: the transition from "enabled, - * armed and pressd" to "enabled, armed and not-pressed". This is considered - * the "trailing edge" of a successful mouse click, and therefore fires an - * ActionEvent in addition to a ChangeEvent. In all other respects this class - * is just a container of boolean flags. - * - * @author Graydon Hoare (graydon_at_redhat.com) - */ -public class DefaultButtonModel implements ButtonModel, Serializable -{ - /** DOCUMENT ME! */ - private static final long serialVersionUID = -5342609566534980231L; - - /** - * Indicates that the button is <em>partially</em> committed to being - * pressed, but not entirely. This usually happens when a user has pressed - * but not yet released the mouse button. - */ - public static final int ARMED = 1; - - /** - * State constant indicating that the button is enabled. Buttons cannot be - * pressed or selected unless they are enabled. - */ - public static final int ENABLED = 8; - - /** - * State constant indicating that the user is holding down the button. When - * this transitions from true to false, an ActionEvent may be fired, - * depending on the value of the "armed" property. - */ - public static final int PRESSED = 4; - - /** - * State constant indicating that the mouse is currently positioned over the - * button. - */ - public static final int ROLLOVER = 16; - - /** - * State constant indicating that the button is selected. This constant is - * only meaningful for toggle-type buttons (radio buttons, checkboxes). - */ - public static final int SELECTED = 2; - - /** - * Represents the "state properties" (armed, enabled, pressed, rollover and - * selected) by a bitwise combination of integer constants. - */ - protected int stateMask = ENABLED; - - /** - * List of ItemListeners, ChangeListeners, and ActionListeners registered on - * this model. - */ - protected EventListenerList listenerList = new EventListenerList(); - ; - - /** The single ChangeEvent this model (re)uses to call its ChangeListeners. */ - protected ChangeEvent changeEvent = new ChangeEvent(this); - - /** - * The group this model belongs to. Only one button in a group may be - * selected at any given time. - */ - protected ButtonGroup group; - - /** - * The key code (one of {@link java.awt.event.KeyEvent} VK_) used to press - * this button via a keyboard interface. - */ - protected int mnemonic = KeyEvent.VK_UNDEFINED; - - /** - * The string used as the "command" property of any ActionEvent this model - * sends. - */ - protected String actionCommand; - - /** - * Creates a new DefaultButtonModel object. - */ - public DefaultButtonModel() - { - } - - /** - * Return <code>null</code>. Use {@link AbstractButton} if you wish to - * interface with a button via an {@link ItemSelectable} interface. - * - * @return <code>null</code> - */ - public Object[] getSelectedObjects() - { - return null; - } - - /** - * Returns a specified class of listeners. - * - * @param listenerType the type of listener to return - * - * @return array of listeners - */ - public EventListener[] getListeners(Class listenerType) - { - return listenerList.getListeners(listenerType); - } - - /** - * Add an ActionListener to the model. Usually only called to subscribe an - * AbstractButton's listener to the model. - * - * @param l The listener to add - */ - public void addActionListener(ActionListener l) - { - listenerList.add(ActionListener.class, l); - } - - /** - * Remove an ActionListener to the model. Usually only called to unsubscribe - * an AbstractButton's listener to the model. - * - * @param l The listener to remove - */ - public void removeActionListener(ActionListener l) - { - listenerList.remove(ActionListener.class, l); - } - - /** - * Returns all registered <code>ActionListener</code> objects. - * - * @return array of <code>ActionListener</code> objects - */ - public ActionListener[] getActionListeners() - { - return (ActionListener[]) listenerList.getListeners(ActionListener.class); - } - - /** - * Add an ItemListener to the model. Usually only called to subscribe an - * AbstractButton's listener to the model. - * - * @param l The listener to add - */ - public void addItemListener(ItemListener l) - { - listenerList.add(ItemListener.class, l); - } - - /** - * Remove an ItemListener to the model. Usually only called to unsubscribe - * an AbstractButton's listener to the model. - * - * @param l The listener to remove - */ - public void removeItemListener(ItemListener l) - { - listenerList.remove(ItemListener.class, l); - } - - /** - * Returns all registered <code>ItemListener</code> objects. - * - * @return array of <code>ItemListener</code> objects - */ - public ItemListener[] getItemListeners() - { - return (ItemListener[]) listenerList.getListeners(ItemListener.class); - } - - /** - * Add a ChangeListener to the model. Usually only called to subscribe an - * AbstractButton's listener to the model. - * - * @param l The listener to add - */ - public void addChangeListener(ChangeListener l) - { - listenerList.add(ChangeListener.class, l); - } - - /** - * Remove a ChangeListener to the model. Usually only called to unsubscribe - * an AbstractButton's listener to the model. - * - * @param l The listener to remove - */ - public void removeChangeListener(ChangeListener l) - { - listenerList.remove(ChangeListener.class, l); - } - - /** - * Returns all registered <code>ChangeListener</code> objects. - * - * @return array of <code>ChangeListener</code> objects - */ - public ChangeListener[] getChangeListeners() - { - return (ChangeListener[]) listenerList.getListeners(ChangeListener.class); - } - - /** - * Inform each ItemListener in the {@link listenerList} that an ItemEvent - * has occurred. This happens in response to any change to the {@link - * stateMask} field. - * - * @param e The ItemEvent to fire - */ - protected void fireItemStateChanged(ItemEvent e) - { - ItemListener[] ll = getItemListeners(); - - for (int i = 0; i < ll.length; i++) - ll[i].itemStateChanged(e); - } - - /** - * Inform each ActionListener in the {@link listenerList} that an - * ActionEvent has occurred. This happens in response to the any change to - * the {@link stateMask} field which makes the enabled, armed and pressed - * properties all simultaneously <code>true</code>. - * - * @param e The ActionEvent to fire - */ - protected void fireActionPerformed(ActionEvent e) - { - ActionListener[] ll = getActionListeners(); - - for (int i = 0; i < ll.length; i++) - ll[i].actionPerformed(e); - } - - /** - * Inform each ChangeListener in the {@link listenerList} that a ChangeEvent - * has occurred. This happens in response to the any change to a property - * of the model. - */ - protected void fireStateChanged() - { - ChangeListener[] ll = getChangeListeners(); - - for (int i = 0; i < ll.length; i++) - ll[i].stateChanged(changeEvent); - } - - /** - * Helper method to fire a ChangeEvent with the model as the event's source. - * - * @param stateflag DOCUMENT ME! - * @param b DOCUMENT ME! - */ - private void changeState(int stateflag, boolean b) - { - int oldstate = stateMask; - int newstate; - - if (b) - newstate = oldstate | stateflag; - else - newstate = oldstate & ~ stateflag; - - if (oldstate == newstate) - return; - - if ((stateflag != SELECTED) && (stateflag != ENABLED) - && (stateMask & ENABLED) == 0) - return; - - stateMask = newstate; - - fireStateChanged(); - - if ((oldstate & SELECTED) == 0 && (newstate & SELECTED) == SELECTED) - { - fireItemStateChanged(new ItemEvent(this, ItemEvent.ITEM_STATE_CHANGED, - null, ItemEvent.SELECTED)); - if (group != null) - group.setSelected(this, true); - } - - else if ((oldstate & SELECTED) == SELECTED && (newstate & SELECTED) == 0) - { - fireItemStateChanged(new ItemEvent(this, ItemEvent.ITEM_STATE_CHANGED, - null, ItemEvent.DESELECTED)); - if (group != null) - group.setSelected(this, false); - } - - else if (((oldstate & ARMED) == ARMED && (oldstate & PRESSED) == PRESSED) - && ((newstate & ARMED) == ARMED && (newstate & PRESSED) == 0)) - fireActionPerformed(new ActionEvent(this, ActionEvent.ACTION_PERFORMED, - actionCommand)); - } - - /** - * Get the value of the model's "armed" property. - * - * @return The current "armed" property - */ - public boolean isArmed() - { - return (stateMask & ARMED) == ARMED; - } - - /** - * Set the value of the model's "armed" property. - * - * @param a The new "armed" property - */ - public void setArmed(boolean a) - { - changeState(ARMED, a); - } - - /** - * Get the value of the model's "enabled" property. - * - * @return The current "enabled" property. - */ - public boolean isEnabled() - { - return (stateMask & ENABLED) == ENABLED; - } - - /** - * Set the value of the model's "enabled" property. - * - * @param e The new "enabled" property - */ - public void setEnabled(boolean e) - { - changeState(ENABLED, e); - } - - /** - * Set the value of the model's "pressed" property. - * - * @param p The new "pressed" property - */ - public void setPressed(boolean p) - { - changeState(PRESSED, p); - } - - /** - * Get the value of the model's "pressed" property. - * - * @return The current "pressed" property - */ - public boolean isPressed() - { - return (stateMask & PRESSED) == PRESSED; - } - - /** - * Set the value of the model's "rollover" property. - * - * @param r The new "rollover" property - */ - public void setRollover(boolean r) - { - changeState(ROLLOVER, r); - } - - /** - * Set the value of the model's "selected" property. - * - * @param s The new "selected" property - */ - public void setSelected(boolean s) - { - changeState(SELECTED, s); - } - - /** - * Get the value of the model's "selected" property. - * - * @return The current "selected" property - */ - public boolean isSelected() - { - return (stateMask & SELECTED) == SELECTED; - } - - /** - * Get the value of the model's "rollover" property. - * - * @return The current "rollover" property - */ - public boolean isRollover() - { - return (stateMask & ROLLOVER) == ROLLOVER; - } - - /** - * Get the value of the model's "mnemonic" property. - * - * @return The current "mnemonic" property - */ - public int getMnemonic() - { - return mnemonic; - } - - /** - * Set the value of the model's "mnemonic" property. - * - * @param key The new "mnemonic" property - */ - public void setMnemonic(int key) - { - if (mnemonic != key) - { - mnemonic = key; - fireStateChanged(); - } - } - - /** - * Set the value of the model's "actionCommand" property. This property is - * used as the "command" property of the {@link ActionEvent} fired from the - * model. - * - * @param s The new "actionCommand" property. - */ - public void setActionCommand(String s) - { - if (actionCommand != s) - { - actionCommand = s; - fireStateChanged(); - } - } - - /** - * Returns the current value of the model's "actionCommand" property. - * - * @return The current "actionCommand" property - */ - public String getActionCommand() - { - return actionCommand; - } - - /** - * Set the value of the model's "group" property. The model is said to be a - * member of the {@link ButtonGroup} held in its "group" property, and only - * one model in a given group can have their "selected" property be - * <code>true</code> at a time. - * - * @param g The new "group" property - */ - public void setGroup(ButtonGroup g) - { - if (group != g) - { - group = g; - fireStateChanged(); - } - } - - /** - * Returns the current value of the model's "group" property. - * - * @return The value of the "group" property - */ - public ButtonGroup getGroup() - { - return group; - } -} |