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index.zulzul<zk>
<zscript><![CDATA[
org.zkoss.zul.ListModel m = new pkg$.FakeListModel(300);
]]></zscript>
<label multiline="true">
1. Click "Option 0" in Listbox.
2. Hold "down" key by keyboard to scroll down Listbox, should not see it jump back to top.
</label>
<window width="300px" height="300px">
<listbox model="${m}" vflex="1">
<custom-attributes org.zkoss.zul.listbox.rod="false" />
<listhead>
<listheader label="Listbox" />
</listhead>
<template name="model">
<listitem label="${each}" />
</template>
</listbox>
</window>
</zk>FakeListModel.javajavaimport java.util.Comparator;
import org.zkoss.zul.AbstractListModel;
import org.zkoss.zul.ext.Sortable;
import org.zkoss.zul.event.ListDataEvent;
public class FakeListModel extends AbstractListModel implements Sortable, java.io.Serializable {
private int _size;
private boolean _asc = true;
public FakeListModel() {
this(10000);
}
public FakeListModel(int size) {
_size = size;
}
// Sortable
public void sort(Comparator cmpr, boolean asc) {
_asc = asc;
invalidate();
}
public void invalidate() {
fireEvent(ListDataEvent.CONTENTS_CHANGED, -1, -1);
}
//AbstractListModel
public Object getElementAt(int v) {
String value = "Option "+(_asc ? v: _size - v - 1);
// System.out.println(value);
return value;
}
//AbstractListModel
public int getSize() {
return _size;
}
//AbstractListModel
public void setSize(int size){
_size = size;
}
public String getSortDirection(Comparator cmpr) {
// TODO Auto-generated method stub
return null;
}
@SuppressWarnings("unchecked")
protected void fireSelectionEvent(Object e) {
if (e instanceof String) {
String s = ((String) e).replace( "Option ", "");
fireEvent(ListDataEvent.SELECTION_CHANGED, Integer.parseInt(s), -1);
} else
super.fireSelectionEvent(e);
}
}