public bool Add(BaseForm form)
{
if (_forms_list.Contains(form))
{
return(false);
}
EventHandler <CancelFormEventArgs> adding;
EventHandler <FormEventArgs> added;
lock (_lock_obj) {
adding = _form_adding;
added = _form_added;
}
if (adding != null)
{
CancelFormEventArgs args = new CancelFormEventArgs(form);
bool cancel = false;
foreach (EventHandler <CancelFormEventArgs> handler in adding.GetInvocationList())
{
args.Cancel = false;
handler(this, args);
cancel |= args.Cancel;
}
if (cancel)
{
return(false);
}
}
_forms_list.Add(form);
if (added != null)
{
added(this, new FormEventArgs(form));
}
return(true);
}
public bool Remove(BaseForm form)
{
if (!_forms_list.Contains(form))
{
return(false);
}
EventHandler <CancelFormEventArgs> removing;
EventHandler <FormEventArgs> removed;
lock (_lock_obj) {
removing = _form_removing;
removed = _form_removed;
}
if (removing != null)
{
CancelFormEventArgs args = new CancelFormEventArgs(form);
bool cancel = false;
foreach (EventHandler <CancelFormEventArgs> handler in removing.GetInvocationList())
{
args.Cancel = false;
handler(this, args);
cancel |= args.Cancel;
}
if (cancel)
{
return(false);
}
}
_forms_list.Remove(form);
if (removed != null)
{
removed(this, new FormEventArgs(form));
}
bool exit = true;
foreach (BaseForm item in _forms_list)
{
exit &= !item.Visible;
}
if (exit)
{
Application.ExitThread();
//Application.Exit();
}
return(true);
}
