Add column reflection of dcol elements into datagrid's columns list.

[Dave Hyatt]

This covers getting the basics working.  Stuff still needs to update when attributes change.

[Dave Hyatt]

Created attachment 32092 [details]
Patch

[Beth Dakin]

Comment on attachment 32092 [details]
Patch

id HTMLDataGridColElement::removedFromTree(bool deep)
> +{
> +    HTMLElement::removedFromTree(deep);
> +    if (datagrid() && datagrid()->dataSource()->isDOMDataGridDataSource()) {
> +        HTMLDataGridElement* grid = findDatagridAncestor();
> +        if (!grid && column()) {
> +            datagrid()->columns()->remove(column());
> +            m_datagrid = 0;
> +        }
> +    }
> +}


I find this a little confusing. What is the difference between datagrid() and the result of findDatagridAncestor().I would expect them to be the same.

r=me!

[Dave Hyatt]

This is kind of like forms.... how stuff is cached in m_form, but you aren't really leaving the form unless you are truly disconnected from it in the ancestor chain... so you have to have a separate find method to test this out.

[Dave Hyatt]

Fixed in r45397.