/* * Copyright (c) 1998, 2004, 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.util.*;import java.io.Serializable;/** * The default model for combo boxes. * * @param <E> the type of the elements of this model * * @author Arnaud Weber * @author Tom Santos */public class DefaultComboBoxModel<E> extends AbstractListModel<E> implements MutableComboBoxModel<E>, Serializable { Vector<E> objects; Object selectedObject; /** * Constructs an empty DefaultComboBoxModel object. */ public DefaultComboBoxModel() { objects = new Vector<E>(); } /** * Constructs a DefaultComboBoxModel object initialized with * an array of objects. * * @param items an array of Object objects */ public DefaultComboBoxModel(final E items[]) { objects = new Vector<E>(); objects.ensureCapacity( items.length ); int i,c; for ( i=0,c=items.length;i<c;i++ ) objects.addElement(items[i]); if ( getSize() > 0 ) { selectedObject = getElementAt( 0 ); } } /** * Constructs a DefaultComboBoxModel object initialized with * a vector. * * @param v a Vector object ... */ public DefaultComboBoxModel(Vector<E> v) { objects = v; if ( getSize() > 0 ) { selectedObject = getElementAt( 0 ); } } // implements javax.swing.ComboBoxModel /** * Set the value of the selected item. The selected item may be null. * <p> * @param anObject The combo box value or null for no selection. */ public void setSelectedItem(Object anObject) { if ((selectedObject != null && !selectedObject.equals( anObject )) || selectedObject == null && anObject != null) { selectedObject = anObject; fireContentsChanged(this, -1, -1); } } // implements javax.swing.ComboBoxModel public Object getSelectedItem() { return selectedObject; } // implements javax.swing.ListModel public int getSize() { return objects.size(); } // implements javax.swing.ListModel public E getElementAt(int index) { if ( index >= 0 && index < objects.size() ) return objects.elementAt(index); else return null; } /** * Returns the index-position of the specified object in the list. * * @param anObject * @return an int representing the index position, where 0 is * the first position */ public int getIndexOf(Object anObject) { return objects.indexOf(anObject); } // implements javax.swing.MutableComboBoxModel public void addElement(E anObject) { objects.addElement(anObject); fireIntervalAdded(this,objects.size()-1, objects.size()-1); if ( objects.size() == 1 && selectedObject == null && anObject != null ) { setSelectedItem( anObject ); } } // implements javax.swing.MutableComboBoxModel public void insertElementAt(E anObject,int index) { objects.insertElementAt(anObject,index); fireIntervalAdded(this, index, index); } // implements javax.swing.MutableComboBoxModel public void removeElementAt(int index) { if ( getElementAt( index ) == selectedObject ) { if ( index == 0 ) { setSelectedItem( getSize() == 1 ? null : getElementAt( index + 1 ) ); } else { setSelectedItem( getElementAt( index - 1 ) ); } } objects.removeElementAt(index); fireIntervalRemoved(this, index, index); } // implements javax.swing.MutableComboBoxModel public void removeElement(Object anObject) { int index = objects.indexOf(anObject); if ( index != -1 ) { removeElementAt(index); } } /** * Empties the list. */ public void removeAllElements() { if ( objects.size() > 0 ) { int firstIndex = 0; int lastIndex = objects.size() - 1; objects.removeAllElements(); selectedObject = null; fireIntervalRemoved(this, firstIndex, lastIndex); } else { selectedObject = null; } }}
/*
* Copyright (c) 1998, 2004, 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.util.*;
import java.io.Serializable;
/**
* The default model for combo boxes.
*
* @param <E> the type of the elements of this model
*
* @author Arnaud Weber
* @author Tom Santos
*/
public class DefaultComboBoxModel<E> extends AbstractListModel<E> implements MutableComboBoxModel<E>, Serializable {
Vector<E> objects;
Object selectedObject;
/**
* Constructs an empty DefaultComboBoxModel object.
*/
public DefaultComboBoxModel() {
objects = new Vector<E>();
}
/**
* Constructs a DefaultComboBoxModel object initialized with
* an array of objects.
*
* @param items an array of Object objects
*/
public DefaultComboBoxModel(final E items[]) {
objects = new Vector<E>();
objects.ensureCapacity( items.length );
int i,c;
for ( i=0,c=items.length;i<c;i++ )
objects.addElement(items[i]);
if ( getSize() > 0 ) {
selectedObject = getElementAt( 0 );
}
}
/**
* Constructs a DefaultComboBoxModel object initialized with
* a vector.
*
* @param v a Vector object ...
*/
public DefaultComboBoxModel(Vector<E> v) {
objects = v;
if ( getSize() > 0 ) {
selectedObject = getElementAt( 0 );
}
}
// implements javax.swing.ComboBoxModel
/**
* Set the value of the selected item. The selected item may be null.
* <p>
* @param anObject The combo box value or null for no selection.
*/
public void setSelectedItem(Object anObject) {
if ((selectedObject != null && !selectedObject.equals( anObject )) ||
selectedObject == null && anObject != null) {
selectedObject = anObject;
fireContentsChanged(this, -1, -1);
}
}
// implements javax.swing.ComboBoxModel
public Object getSelectedItem() {
return selectedObject;
}
// implements javax.swing.ListModel
public int getSize() {
return objects.size();
}
// implements javax.swing.ListModel
public E getElementAt(int index) {
if ( index >= 0 && index < objects.size() )
return objects.elementAt(index);
else
return null;
}
/**
* Returns the index-position of the specified object in the list.
*
* @param anObject
* @return an int representing the index position, where 0 is
* the first position
*/
public int getIndexOf(Object anObject) {
return objects.indexOf(anObject);
}
// implements javax.swing.MutableComboBoxModel
public void addElement(E anObject) {
objects.addElement(anObject);
fireIntervalAdded(this,objects.size()-1, objects.size()-1);
if ( objects.size() == 1 && selectedObject == null && anObject != null ) {
setSelectedItem( anObject );
}
}
// implements javax.swing.MutableComboBoxModel
public void insertElementAt(E anObject,int index) {
objects.insertElementAt(anObject,index);
fireIntervalAdded(this, index, index);
}
// implements javax.swing.MutableComboBoxModel
public void removeElementAt(int index) {
if ( getElementAt( index ) == selectedObject ) {
if ( index == 0 ) {
setSelectedItem( getSize() == 1 ? null : getElementAt( index + 1 ) );
}
else {
setSelectedItem( getElementAt( index - 1 ) );
}
}
objects.removeElementAt(index);
fireIntervalRemoved(this, index, index);
}
// implements javax.swing.MutableComboBoxModel
public void removeElement(Object anObject) {
int index = objects.indexOf(anObject);
if ( index != -1 ) {
removeElementAt(index);
}
}
/**
* Empties the list.
*/
public void removeAllElements() {
if ( objects.size() > 0 ) {
int firstIndex = 0;
int lastIndex = objects.size() - 1;
objects.removeAllElements();
selectedObject = null;
fireIntervalRemoved(this, firstIndex, lastIndex);
} else {
selectedObject = null;
}
}
}