/// <devdoc>
/// Cleans up form state after a control has been removed.
/// Package scope for Control
/// </devdoc>
/// <internalonly/>
internal virtual void AfterControlRemoved(Control control)
{
if (control == activeControl || control.Contains(activeControl))
{
// REGISB: this branch never seems to be reached.
// leaving it intact to be on the safe side
bool selected = SelectNextControl(control, true, true, true, true);
if (selected)
{
FocusActiveControlInternal();
}
}
else if (activeControl == null && ParentInternal != null)
{
// The last control of an active container was removed. Focus needs to be given to the next
// control in the Form.
ContainerControl cc = ParentInternal.GetContainerControlInternal() as ContainerControl;
if (cc != null && cc.ActiveControl == this)
{
Form f = FindFormInternal();
if (f != null)
{
f.SelectNextControl(this, true, true, true, true);
}
}
}
if (control == unvalidatedControl || control.Contains(unvalidatedControl))
{
unvalidatedControl = null;
}
}
/// <devdoc>
/// WM_SETFOCUS handler
/// </devdoc>
/// <internalonly/>
private void WmSetFocus(ref Message m)
{
if (!HostedInWin32DialogManager)
{
if (ActiveControl != null)
{
ImeSetFocus();
// REGISB: Do not raise GotFocus event since the focus
// is given to the visible ActiveControl
if (!ActiveControl.Visible)
{
OnGotFocus(EventArgs.Empty);
}
FocusActiveControlInternal();
}
else
{
if (ParentInternal != null)
{
IContainerControl c = ParentInternal.GetContainerControlInternal();
if (c != null)
{
bool succeeded = false;
ContainerControl knowncontainer = c as ContainerControl;
if (knowncontainer != null)
{
succeeded = knowncontainer.ActivateControlInternal(this);
}
else
{
// SECREVIEW : Taking focus and activating a control is response
// : to a user gesture (WM_SETFOCUS) is OK.
//
IntSecurity.ModifyFocus.Assert();
try {
succeeded = c.ActivateControl(this);
}
finally {
CodeAccessPermission.RevertAssert();
}
}
if (!succeeded)
{
return;
}
}
}
base.WndProc(ref m);
}
}
else
{
base.WndProc(ref m);
}
}
/// <include file='doc\ContainerControl.uex' path='docs/doc[@for="ContainerControl.Select"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
protected override void Select(bool directed, bool forward)
{
bool correctParentActiveControl = true;
if (ParentInternal != null)
{
IContainerControl c = ParentInternal.GetContainerControlInternal();
if (c != null)
{
c.ActiveControl = this;
correctParentActiveControl = (c.ActiveControl == this);
}
}
if (directed && correctParentActiveControl)
{
SelectNextControl(null, forward, true, true, false);
}
}