Why are you not using FieldUpdater?
So instead of preventing selection, you actually handle changes in cells?
On Friday, February 1, 2013 11:22:56 PM UTC+1, BM wrote:
>
> 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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