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index.zulzul<zk>
<window border="normal" title="hello" apply="pkg$.TestComposer">
<label multiline="true">
1. Click among the items in the listbox
2. For each click, observe the events in the log
Expected: only one SELECTION_CHANGED event per click
Actual: two SELECTION_CHANGED events per click (except first click)
Bonus test:
1. Hold down ctrl and select a number of items
2. Release ctrl and select only one item
Expected: only one SELECTION_CHANGED event per click
Actual: one SELECTION_CHANGED event per ctrl-click, many SELECTION_CHANGED events per non-ctrl-click
</label>
<vbox>
<listbox height="200px" width="200px" mold="select" multiple="true" id="lb1"/>
<label multiline="true" id="log" hflex="1" height="200px" />
</vbox>
</window>
</zk>
TestComposer.javajavaimport org.zkoss.zk.ui.*;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.*;
import org.zkoss.zk.ui.util.*;
import org.zkoss.zk.ui.ext.*;
import org.zkoss.zk.au.*;
import org.zkoss.zk.au.out.*;
import org.zkoss.zul.*;
import org.zkoss.zul.ext.Selectable;
import java.util.*;
import org.zkoss.zul.event.ListDataEvent;
import org.zkoss.zul.event.ListDataListener;
public class TestComposer extends GenericForwardComposer {
Listbox lb1;
Label log;
ListModelList s1;
Collection<DataHolder> oldSelection = new ArrayList<DataHolder>();
private class DataHolder {
String data;
public DataHolder(String data) {
this.data = data;
}
public String toString() {
return data;
}
@Override
public boolean equals(Object obj) {
boolean ret = false;
if (obj instanceof DataHolder) {
ret = data.equals(((DataHolder) obj).data);
}
return ret;
}
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((data == null) ? 0 : data.hashCode());
return result;
}
}
private List<DataHolder> createList() {
List<DataHolder> l1 = new ArrayList();
for (int i = 0; i < 10; i++) {
l1.add(new DataHolder("d" + i));
}
return l1;
}
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
s1 = new ListModelList<DataHolder>(createList());
addListDataListener();
s1.setMultiple(true);
lb1.setModel(s1);
addSelectListener();
}
private void addListDataListener() {
s1.addListDataListener(new ListDataListener() {
@Override
public void onChange(ListDataEvent event) {
if (event.getType() == ListDataEvent.SELECTION_CHANGED) {
Collection<DataHolder> selection = s1.getSelection();
log("SELECTION_CHANGED: " + selection.toString() + "<-"
+ oldSelection.toString());
oldSelection = new ArrayList(selection);
}
}
});
}
private void addSelectListener() {
lb1.addEventListener(Events.ON_SELECT, new EventListener<Event>() {
@Override
public void onEvent(Event event) throws Exception {
log("ON_SELECT");
}
});
}
private void log(String s) {
log.setValue(new java.util.Date() + ": " + s + "\r\n" + log.getValue());
}
}