So I have a custom SingleSelectionModel which I am using to catch the
setSelection well before it is selected. Basically to Cancel selection of
second cell if the form data of the first cell is not saved.
public class PromptingSelectionModel<T> extends SingleSelectionModel<T> {
private boolean stopSelection;
public PromptingSelectionModel() {
super();
}
public PromptingSelectionModel(ProvidesKey<T> keyProvider) {
super(keyProvider);
}
@Override
public void setSelected(T object, boolean selected) {
if (formChanged
&& !Window.confirm("There are unsaved changes, are you sure
you want to continue?")) {
stopSelection = true;
return;
} else {
stopSelection = false;
}
if (!(stopSelection)) {
super.setSelected(object, selected);
}
}
The problem I see here is When I move from one Cell item to another the
setSelected method here is sometimes called twice and sometimes it is
called once.
Cell 1 selected. Which shows form data. I changed form data. formChanged
get set to True.
Clicked on Cell 3. setSelected method of PromptingSelectionModel is called.
I see parameters to the methods are coming as DTO of Cell 1 and false. I
get the confirm dialog box. I clicked Cancel. setSelected method of
PromptingSelectionModel is called again. I see parameters to the methods
are coming as DTO of Cell 2 and true. I get the confirm dialog box again.
Clicking Cancel now will keep the selection of Cell 1. So I got two confirm
here okay? Then I click Cell 5. setSelected method of
PromptingSelectionModel is called. I see parameters to the methods are
coming as DTO of Cell 5 and true.I get the confirm dialog box only once.
Clicking Cancel now will keep the selection of Cell 1.
Is this a know bug? It seems internally hasCellPresenter class is called or
something which sets the second cell as true.
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