Hi all,
I am using the CellTree to add and remove nodes (on the same level,
only a list of nodes).
But I've encountered an exception when attempting to remove the last
node of the CellTree :
Uncaught JavaScript exception [uncaught exception:
java.lang.AssertionError: Child index out of bounds] in , line 0
Here is my code ;
public class Test extends Composite {
private static TestUiBinder uiBinder =
GWT.create(TestUiBinder.class);
interface TestUiBinder extends UiBinder<Widget, Test> {
}
@UiField(provided = true)
CellTree rightTree;
@UiField
PushButton removeEntity;
private SingleSelectionModel<EntiteDTO> rightTreeSelectionModel;
private TreeViewModel rightTreeModel;
private ListDataProvider<EntiteDTO> rightTreeProvider;
public Test() {
init();
}
public void init() {
createRightTree();
initWidget(uiBinder.createAndBindUi(this));
}
@UiHandler("removeEntity")
public void onRemoveEntityClick(ClickEvent event) {
EntiteDTO entSelected =
rightTreeSelectionModel.getSelectedObject();
Iterator<EntiteDTO> ite =
rightTreeProvider.getList().iterator();
while (ite.hasNext()) {
EntiteDTO ent = ite.next();
if (ent.getId().equals(entSelected.getId())) {
ite.remove();
}
}
rightTreeProvider.refresh();
}
private void createRightTree() {
CellTree.Resources res =
GWT.create(CellTree.BasicResources.class);
rightTreeSelectionModel = new
SingleSelectionModel<EntiteDTO>();
rightTreeProvider = new ListDataProvider<EntiteDTO>();
rightTreeModel = new TreeViewModel() {
@Override
public boolean isLeaf(Object value) {
if (value == null) {
return false;
}
return true;
}
@Override
public <T> NodeInfo<?> getNodeInfo(T value) {
return new
DefaultNodeInfo<EntiteDTO>(rightTreeProvider, new FolderEntityCell(),
rightTreeSelectionModel, null);
}
};
rightTree = new CellTree(rightTreeModel, null, res);
rightTree.setAnimationEnabled(true);
}
}
The FolderEntityCell is a cell with icon, and EntiteDTO just some
POJO.
So I added some nodes to the rightTree with
rightTreeProvider.getList().add(...) on the first level.
I can remove these nodes by clicking on the removeEntity PushButton,
but when I want to remove the last one, it is removed on the browser,
but a java.lang.AssertionError occur :
Uncaught JavaScript exception [uncaught exception:
java.lang.AssertionError: Child index out of bounds] in , line 0
So I'm wondering if I do something wrong in my removal process.
I hope you can help me on this point, and thank you in advance.
Cheers.
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