public DockContent()
{
m_dockHandler = new DockContentHandler(this, new GetPersistStringCallback(GetPersistString));
m_dockHandler.DockStateChanged += new EventHandler(DockHandler_DockStateChanged);
//Suggested as a fix by bensty regarding form resize
this.ParentChanged += new EventHandler(DockContent_ParentChanged);
}
public void GiveUpFocus(IDockContent content)
{
DockContentHandler handler = content.DockHandler;
if (!handler.Form.ContainsFocus)
{
return;
}
if (IsFocusTrackingSuspended)
{
DockPanel.DummyControl.Focus();
}
if (LastActiveContent == content)
{
IDockContent prev = handler.PreviousActive;
if (prev != null)
{
Activate(prev);
}
else if (ListContent.Count > 0)
{
Activate(ListContent[ListContent.Count - 1]);
}
}
else if (LastActiveContent != null)
{
Activate(LastActiveContent);
}
else if (ListContent.Count > 0)
{
Activate(ListContent[ListContent.Count - 1]);
}
}
public void Activate(IDockContent content)
{
if (IsFocusTrackingSuspended)
{
ContentActivating = content;
return;
}
if (content == null)
{
return;
}
DockContentHandler handler = content.DockHandler;
if (handler.Form.IsDisposed)
{
return; // Should not reach here, but better than throwing an exception
}
if (ContentContains(content, handler.ActiveWindowHandle))
{
NativeMethods.SetFocus(handler.ActiveWindowHandle);
}
if (!handler.Form.ContainsFocus)
{
if (!handler.Form.SelectNextControl(handler.Form.ActiveControl, true, true, true, true))
{
// Since DockContent Form is not selectalbe, use Win32 SetFocus instead
NativeMethods.SetFocus(handler.Form.Handle);
}
}
}
private void AddLastToActiveList(IDockContent content)
{
IDockContent last = LastActiveContent;
if (last == content)
{
return;
}
DockContentHandler handler = content.DockHandler;
if (IsInActiveList(content))
{
RemoveFromActiveList(content);
}
handler.PreviousActive = last;
handler.NextActive = null;
LastActiveContent = content;
if (last != null)
{
last.DockHandler.NextActive = LastActiveContent;
}
}
