/* * Copyright (c) 2006, 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 sun.beans.editors;import java.awt.Component;import java.awt.Graphics;import java.awt.Rectangle;import java.beans.PropertyChangeEvent;import java.beans.PropertyChangeListener;import java.beans.PropertyEditor;import java.util.ArrayList;import java.util.List;/** * Property editor for java.lang.Enum subclasses. * * @see PropertyEditor * * @since 1.7 * * @author Sergey A. Malenkov */public final class EnumEditor implements PropertyEditor { private final List<PropertyChangeListener> listeners = new ArrayList<PropertyChangeListener>(); private final Class type; private final String[] tags; private Object value; public EnumEditor( Class type ) { Object[] values = type.getEnumConstants(); if ( values == null ) { throw new IllegalArgumentException( "Unsupported " + type ); } this.type = type; this.tags = new String[values.length]; for ( int i = 0; i < values.length; i++ ) { this.tags[i] = ( ( Enum )values[i] ).name(); } } public Object getValue() { return this.value; } public void setValue( Object value ) { if ( ( value != null ) && !this.type.isInstance( value ) ) { throw new IllegalArgumentException( "Unsupported value: " + value ); } Object oldValue; PropertyChangeListener[] listeners; synchronized ( this.listeners ) { oldValue = this.value; this.value = value; if ( ( value == null ) ? oldValue == null : value.equals( oldValue ) ) { return; // do not fire event if value is not changed } int size = this.listeners.size(); if ( size == 0 ) { return; // do not fire event if there are no any listener } listeners = this.listeners.toArray( new PropertyChangeListener[size] ); } PropertyChangeEvent event = new PropertyChangeEvent( this, null, oldValue, value ); for ( PropertyChangeListener listener : listeners ) { listener.propertyChange( event ); } } public String getAsText() { return ( this.value != null ) ? ( ( Enum )this.value ).name() : null; } public void setAsText( String text ) { setValue( ( text != null ) ? Enum.valueOf( this.type, text ) : null ); } public String[] getTags() { return this.tags.clone(); } public String getJavaInitializationString() { String name = getAsText(); return ( name != null ) ? this.type.getName() + '.' + name : "null"; } public boolean isPaintable() { return false; } public void paintValue( Graphics gfx, Rectangle box ) { } public boolean supportsCustomEditor() { return false; } public Component getCustomEditor() { return null; } public void addPropertyChangeListener( PropertyChangeListener listener ) { synchronized ( this.listeners ) { this.listeners.add( listener ); } } public void removePropertyChangeListener( PropertyChangeListener listener ) { synchronized ( this.listeners ) { this.listeners.remove( listener ); } }}
/*
* Copyright (c) 2006, 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 sun.beans.editors;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyEditor;
import java.util.ArrayList;
import java.util.List;
/**
* Property editor for java.lang.Enum subclasses.
*
* @see PropertyEditor
*
* @since 1.7
*
* @author Sergey A. Malenkov
*/
public final class EnumEditor implements PropertyEditor {
private final List<PropertyChangeListener> listeners = new ArrayList<PropertyChangeListener>();
private final Class type;
private final String[] tags;
private Object value;
public EnumEditor( Class type ) {
Object[] values = type.getEnumConstants();
if ( values == null ) {
throw new IllegalArgumentException( "Unsupported " + type );
}
this.type = type;
this.tags = new String[values.length];
for ( int i = 0; i < values.length; i++ ) {
this.tags[i] = ( ( Enum )values[i] ).name();
}
}
public Object getValue() {
return this.value;
}
public void setValue( Object value ) {
if ( ( value != null ) && !this.type.isInstance( value ) ) {
throw new IllegalArgumentException( "Unsupported value: " + value );
}
Object oldValue;
PropertyChangeListener[] listeners;
synchronized ( this.listeners ) {
oldValue = this.value;
this.value = value;
if ( ( value == null ) ? oldValue == null : value.equals( oldValue ) ) {
return; // do not fire event if value is not changed
}
int size = this.listeners.size();
if ( size == 0 ) {
return; // do not fire event if there are no any listener
}
listeners = this.listeners.toArray( new PropertyChangeListener[size] );
}
PropertyChangeEvent event = new PropertyChangeEvent( this, null, oldValue, value );
for ( PropertyChangeListener listener : listeners ) {
listener.propertyChange( event );
}
}
public String getAsText() {
return ( this.value != null )
? ( ( Enum )this.value ).name()
: null;
}
public void setAsText( String text ) {
setValue( ( text != null )
? Enum.valueOf( this.type, text )
: null );
}
public String[] getTags() {
return this.tags.clone();
}
public String getJavaInitializationString() {
String name = getAsText();
return ( name != null )
? this.type.getName() + '.' + name
: "null";
}
public boolean isPaintable() {
return false;
}
public void paintValue( Graphics gfx, Rectangle box ) {
}
public boolean supportsCustomEditor() {
return false;
}
public Component getCustomEditor() {
return null;
}
public void addPropertyChangeListener( PropertyChangeListener listener ) {
synchronized ( this.listeners ) {
this.listeners.add( listener );
}
}
public void removePropertyChangeListener( PropertyChangeListener listener ) {
synchronized ( this.listeners ) {
this.listeners.remove( listener );
}
}
}