public void TopLevelForm_Load(object sender, EventArgs e)
{
Form f = (Form) sender;
SPTabOrderManager tom = new SPTabOrderManager(f);
//// Add an override for everything with a tab scheme set EXCEPT for the form, which
//// serves as the root of the whole process.
SPTabOrderManager.TabScheme formScheme = SPTabOrderManager.TabScheme.None;
IDictionaryEnumerator extendeeEnumerator = extendees.GetEnumerator();
while (extendeeEnumerator.MoveNext())
{
Control c = (Control) extendeeEnumerator.Key;
SPTabOrderManager.TabScheme scheme = (SPTabOrderManager.TabScheme) extendeeEnumerator.Value;
if (c == f)
{
formScheme = scheme;
}
else
{
tom.SetSchemeForControl(c, scheme);
}
}
tom.SetTabOrder(formScheme);
}
/// <summary>
/// Set the tab scheme to use on a given control
/// </summary>
/// <param name="c"></param>
public void SetTabScheme(Control c, SPTabOrderManager.TabScheme val)
{
if (val != SPTabOrderManager.TabScheme.None)
{
extendees[c] = val;
if (topLevelForm == null)
{
if (c.TopLevelControl != null)
{
//' We're in luck.
//' This is the form, or this control knows about it, so take the opportunity to grab it and wire up to its Load event.
topLevelForm = (Form) c.TopLevelControl;
HookFormLoad();
}
else
{
//' Set up to wait around until this control or one of its ancestors is added to the form's control hierarchy.
HookParentChangedEvents(c);
}
}
}
else if (extendees.Contains(c))
{
extendees.Remove(c);
//' If we no longer have any extendees, we don't need to be wired up to the form load event.
if (extendees.Count == 0)
{
UnhookFormLoad();
}
}
}
