+++ /dev/null
-/* java.beans.PropertyEditorSupport
- Copyright (C) 1998 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., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 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 java.beans;
-
-/**
- ** PropertyEditorSupport helps with PropertyEditors,
- ** implementing base functionality that they usually must
- ** have but which is a pain to implement. You may extend
- ** from this class or use it as a standalone.<P>
- **
- ** This class does not do any painting or actual editing.
- ** For that, you must use or extend it. See the
- ** PropertyEditor class for better descriptions of what
- ** the various methods do.
- **
- ** @author John Keiser
- ** @since JDK1.1
- ** @version 1.1.0, 29 Jul 1998
- **/
-
-public class PropertyEditorSupport implements PropertyEditor {
- Object eventSource;
- Object val;
- PropertyChangeSupport pSupport;
-
- /** Call this constructor when you are deriving from
- ** PropertyEditorSupport.
- **/
- protected PropertyEditorSupport() {
- this.eventSource = this;
- this.pSupport = new PropertyChangeSupport(this);
- }
-
- /** Call this constructor when you are using
- ** PropertyEditorSupport as a helper object.
- ** @param eventSource the source to use when firing
- ** property change events.
- **/
- protected PropertyEditorSupport(Object eventSource) {
- this.eventSource = eventSource;
- this.pSupport = new PropertyChangeSupport(this);
- }
-
- /** Set the current value of the property.
- ** <STRONG>Implementation Note</STRONG> Sun does not
- ** state what exactly this version of the method does.
- ** Thus, in this implementation, it sets the value, and
- ** then if the old and new values are different, it
- ** fires a property change event with no property name
- ** and the old and new values.
- ** @param val the new value for the property.
- **/
- public void setValue(Object val) {
- Object oldVal = val;
- this.val = val;
- if(!oldVal.equals(val)) {
- pSupport.firePropertyChange(null,oldVal,val);
- }
- }
-
- /** Get the current value of the property.
- ** @return the current value of the property.
- **/
- public Object getValue() {
- return val;
- }
-
- /** Get whether this object is paintable or not.
- ** @return <CODE>false</CODE>
- **/
- public boolean isPaintable() {
- return false;
- }
-
- /** Paint this object. This class does nothing in
- ** this method.
- **/
- public void paintValue(java.awt.Graphics g, java.awt.Rectangle r) {
- }
-
- /** Get the Java initialization String for the current
- ** value of the Object. This class returns gibberish or
- ** null (though the spec does not say which).<P>
- ** <STRONG>Implementation Note:</STRONG> This class
- ** returns the string "@$#^" to make sure the code will
- ** be broken, so that you will know to override it when
- ** you create your own property editor.
- ** @return the Java initialization string.
- **/
- public String getJavaInitializationString() {
- return "@$#^";
- }
-
- /** Get the value as text.
- ** In this class, you cannot count on getAsText() doing
- ** anything useful, although in this implementation I
- ** do toString().
- ** @return the value as text.
- **/
- public String getAsText() {
- return val != null ? val.toString() : "null";
- }
-
- /** Set the value as text.
- ** In this class, you cannot count on setAsText() doing
- ** anything useful across implementations.
- ** <STRONG>Implementation Note:</STRONG> In this
- ** implementation it checks if the String is "null", and
- ** if it is, sets the value to null, otherwise it throws
- ** an IllegalArgumentException.
- ** @param s the text to convert to a new value.
- ** @exception IllegalArgumentException if the text is
- ** malformed.
- **/
- public void setAsText(String s) throws IllegalArgumentException {
- if(s.equals("null")) {
- setValue(null);
- } else {
- throw new IllegalArgumentException();
- }
- }
-
- /** Returns a list of possible choices for the value.
- ** @return <CODE>null</CODE>
- **/
- public String[] getTags() {
- return null;
- }
-
- /** Return a custom component to edit the value.
- ** @return <CODE>null</CODE> in this class.
- **/
- public java.awt.Component getCustomEditor() {
- return null;
- }
-
- /** Find out whether this property editor supports a
- ** custom component to edit its value.
- ** @return <CODE>false</CODE> in this class.
- **/
- public boolean supportsCustomEditor() {
- return false;
- }
-
- /** Add a property change listener to this property editor.
- ** @param l the listener to add.
- **/
- public void addPropertyChangeListener(PropertyChangeListener l) {
- pSupport.addPropertyChangeListener(l);
- }
-
- /** Remove a property change listener from this property editor.
- ** @param l the listener to remove.
- **/
- public void removePropertyChangeListener(PropertyChangeListener l) {
- pSupport.removePropertyChangeListener(l);
- }
-
-
- /** Notify people that we've changed, although we don't
- ** tell them just how. The only thing I can think of to
- ** send in the event is the new value (since the old value
- ** is unavailable and there is no property name).
- ** I confess I do not understand the point of this method.
- **/
- public void firePropertyChange() {
- pSupport.firePropertyChange(null,null,val);
- }
-}
-
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