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index.zulzul<zk>
<label multiline="true">
Steps to reproduce:
1. focus the chosenbox inputcomponent
2. type "aa" (dropdown appears, with 10 items ("aa0" - "aa9") -> OK - getElementAt() called for these 10 items)
3. select e.g. "aa3" using keyboard press [return]-key to delete the selection of "aa3"
4. press [tab] so enter the next input component
5. press [shift+tab] to return to the chosenbox component (if the bug exists, it will show the following result.)
--> getElementAt() will be called 50000 times (the return value of getSize() of ListModel) !!!
--> getElementAt() will be called again 13324 times (basically called from 0 through index of previously selected item)
6. start typing again e.g. "b" (if the bug exists, it will show the following result.)
--> getElementAt() in list model will be called another 13324 times
--> (dropdown appears, with 10 items -> OK - getElementAt() called for these 10 items)
</label>
<zscript><![CDATA[
import org.zkoss.bind.annotation.BindingParam;
import org.zkoss.bind.annotation.Command;
import org.zkoss.zk.ui.event.InputEvent;
import org.zkoss.zul.AbstractListModel;
import org.zkoss.zul.ListModel;
import org.zkoss.zul.ListModelList;
import org.zkoss.zul.ListSubModel;
public class ChosenboxViewModel {
private ListModel chosenboxModel = new BigDataListModel();
private ListModel comboboxModel = new BigDataListModel();
public ListModel getComboboxModel() {
return comboboxModel;
}
public ListModel getChosenboxModel() {
return chosenboxModel;
}
class BigDataListModel extends AbstractListModel implements ListSubModel {
public Object getElementAt(int index) {
String string = Integer.valueOf(index).toString(index, 36);
Clients.log("getElementAt called for : " + index + " -> " + string);
return string;
}
public int getSize() {
return 50000;
}
public ListModel getSubModel(Object value, int nRows) {
Clients.log(String.format("sublist called: \"%s\", %d", new Object[]{ value, nRows}));
ListModelList subList = new ListModelList();
if("".equals(value)) {
return subList;
}
for(int i = 0; i < 10; i++) {
long number = Long.parseLong((String)value + i, 36);
if(number > getSize()) {
break;
}
subList.add(getElementAt((int)number));
}
Clients.log(subList.toString());
return subList;
}
}
}
]]></zscript>
<window title="new page title" border="normal" apply="org.zkoss.bind.BindComposer" viewModel="@id('vm') @init('ChosenboxViewModel')">
<vlayout>
<chosenbox model="@load(vm.chosenboxModel)" width="400px" />
<!-- <combobox model="@load(vm.comboboxModel)" width="400px" autodrop="true" /> -->
</vlayout>
</window>
</zk>TestComposer.javajavaimport org.zkoss.zk.ui.*;
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.*;
public class TestComposer extends GenericForwardComposer{
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
}
public void onClick$btn(Event e) throws InterruptedException{
Messagebox.show("Hi btn");
}
}