/*
* This file is modified by Ivan Maidanski <ivmai@ivmaisoft.com>
* Project name: JCGO-SUNAWT (http://www.ivmaisoft.com/jcgo/)
*/
/*
* @(#)WListPeer.java 1.28 03/01/23
*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package sun.awt.windows;
import java.awt.*;
import java.awt.peer.*;
import java.awt.event.ActionEvent;
import java.awt.event.ItemEvent;
class WListPeer extends WComponentPeer implements ListPeer {
// ComponentPeer overrides
public Dimension minimumSize() {
return minimumSize(4);
}
public boolean isFocusable() {
return true;
}
// ListPeer implementation
public int[] getSelectedIndexes() {
List l = (List)target;
int len = l.countItems();
int sel[] = new int[len];
int nsel = 0;
for (int i = 0 ; i < len ; i++) {
if (isSelected(i)) {
sel[nsel++] = i;
}
}
int selected[] = new int[nsel];
System.arraycopy(sel, 0, selected, 0, nsel);
return selected;
}
/* New method name for 1.1 */
public void add(String item, int index) {
addItem(item, index);
}
/* New method name for 1.1 */
public void removeAll() {
clear();
}
/* New method name for 1.1 */
public void setMultipleMode (boolean b) {
setMultipleSelections(b);
}
/* New method name for 1.1 */
public Dimension getPreferredSize(int rows) {
return preferredSize(rows);
}
/* New method name for 1.1 */
public Dimension getMinimumSize(int rows) {
return minimumSize(rows);
}
private FontMetrics fm;
public void addItem(String item, int index) {
addItems(new String[] {item}, index, fm.stringWidth(item));
}
native void addItems(String[] items, int index, int width);
public native void delItems(int start, int end);
public void clear() {
List l = (List)target;
delItems(0, l.countItems());
}
public native void select(int index);
public native void deselect(int index);
public native void makeVisible(int index);
public native void setMultipleSelections(boolean v);
public native int getMaxWidth();
public Dimension preferredSize(int v) {
if ( fm == null ) {
List li = (List)target;
fm = getFontMetrics( li.getFont() );
}
Dimension d = minimumSize(v);
d.width = Math.max(d.width, getMaxWidth() + 20);
return d;
}
public Dimension minimumSize(int v) {
return new Dimension(20 + fm.stringWidth("0123456789abcde"),
(fm.getHeight() * v) + 4); // include borders
}
// Toolkit & peer internals
WListPeer(List target) {
super(target);
}
native void create(WComponentPeer parent);
void initialize() {
List li = (List)target;
fm = getFontMetrics( li.getFont() );
Font font = li.getFont();
if (font != null)
setFont(font);
// add any items that were already inserted in the target.
int nitems = li.countItems();
if (nitems > 0) {
String[] items = new String[nitems];
int maxWidth = 0;
int width = 0;
for (int i = 0; i < nitems; i++) {
items[i] = li.getItem(i);
width = fm.stringWidth(items[i]);
if (width > maxWidth) {
maxWidth = width;
}
}
addItems(items, 0, maxWidth);
}
// set whether this list should allow multiple selections.
setMultipleSelections(li.allowsMultipleSelections());
// select the item if necessary.
int sel[] = li.getSelectedIndexes();
for (int i = 0 ; i < sel.length ; i++) {
select(sel[i]);
}
// make the visible position visible.
// fix for 4676536 by kdm@sparc.spb.su
// we should call makeVisible() after we call select()
// because of a bug in Windows which is manifested by
// incorrect scrolling of the selected item if the list
// height is less than an item height of the list.
int index = li.getVisibleIndex();
if (index < 0 && sel.length > 0) {
index = sel[0];
}
if (index >= 0) {
makeVisible(index);
}
super.initialize();
}
public boolean shouldClearRectBeforePaint() {
return false;
}
private native void updateMaxItemWidth();
/*public*/ native boolean isSelected(int index);
// update the fontmetrics when the font changes
public synchronized void setFont(Font f)
{
super.setFont( f );
fm = getFontMetrics( ((List)target).getFont() );
updateMaxItemWidth();
}
// native callbacks
void handleAction(final int index, final long when, final int modifiers) {
final List l = (List)target;
WToolkit.executeOnEventHandlerThread(l, new Runnable() {
public void run() {
l.select(index);
postEvent(new ActionEvent(target, ActionEvent.ACTION_PERFORMED,
l.getItem(index), when, modifiers));
}
});
}
void handleListChanged(final int index) {
final List l = (List)target;
WToolkit.executeOnEventHandlerThread(l, new Runnable() {
public void run() {
postEvent(new ItemEvent(l, ItemEvent.ITEM_STATE_CHANGED,
new Integer(index),
isSelected(index)? ItemEvent.SELECTED :
ItemEvent.DESELECTED));
}
});
}
}