GChoicePeer.java

/*
 * @(#)GChoicePeer.java	1.17 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program 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. 
 * 
 * This program 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 at /legal/license.txt). 
 * 
 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions. 
 *
 */

package sun.awt.gtk;

import sun.awt.peer.*;
import java.awt.*;
import java.awt.event.*;

/**
 * Peer object for Gtk+ choice widget.
 *
 * @author Nicholas Allen
 */

class GChoicePeer extends GComponentPeer implements ChoicePeer {
    private static native void initIDs();
    static {
        initIDs();
    }
    GChoicePeer (GToolkit toolkit, Choice target) {
        super(toolkit, target);
        int itemCount = target.getItemCount();
        for (int i = 0; i < itemCount; i++)
            add(target.getItem(i), i);
        int selectedIndex = target.getSelectedIndex();
        if (selectedIndex >= 0 && itemCount > 0)
            select(selectedIndex);
    }
	
    protected native void create();
	
    public boolean isFocusTraversable() {
        return true;
    }
	
    private native void addNative(byte[] item, int index, int selectedIndex);

    public void add(String item, int index) {
        if (item != null)
            addNative(stringToNulMultiByte(item), index, ((Choice) target).getSelectedIndex());
        target.invalidate();
    }
	
    private native void removeNative(int index, int selectedIndex);

    public void remove(int index) {
        removeNative(index, ((Choice) target).getSelectedIndex());
        target.invalidate();
    }

    public native void select(int index);
    final static int 	DOWNARROW = 20;
    private void postItemEvent(int index) {
        Choice c = (Choice) target;
        GToolkit.postEvent(new ItemEvent(c, ItemEvent.ITEM_STATE_CHANGED,
                c.getItem(index), ItemEvent.SELECTED));
    }
}