void ITabContent.OnVisibilityChanged(TabContentVisibilityEvent visEvent)
{
#if DEBUG
switch (visEvent)
{
case TabContentVisibilityEvent.Added:
Debug.Assert(!_added);
Debug.Assert(!_visible);
_added = true;
break;
case TabContentVisibilityEvent.Removed:
Debug.Assert(_added);
Debug.Assert(!_visible);
_added = false;
break;
case TabContentVisibilityEvent.Visible:
Debug.Assert(_added);
Debug.Assert(!_visible);
_visible = true;
break;
case TabContentVisibilityEvent.Hidden:
Debug.Assert(_added);
Debug.Assert(_visible);
_visible = false;
break;
}
#endif
if (visEvent == TabContentVisibilityEvent.Removed)
{
Debug.Assert(!removed);
CancelAsyncWorker();
elementZoomer.Dispose();
var id = documentTabUIContextLocator as IDisposable;
Debug.Assert(id != null);
if (id != null)
{
id.Dispose();
}
documentTabService.OnRemoved(this);
removed = true;
}
}
public void OnVisibilityChanged(TabContentVisibilityEvent visEvent)
{
var ev = Convert(visEvent);
if (ev != null)
{
#if DEBUG
switch (ev)
{
case ToolWindowContentVisibilityEvent.Added:
Debug.Assert(!_added);
Debug.Assert(!_visible);
_added = true;
break;
case ToolWindowContentVisibilityEvent.Removed:
Debug.Assert(_added);
Debug.Assert(!_visible);
_added = false;
break;
case ToolWindowContentVisibilityEvent.Visible:
Debug.Assert(_added);
Debug.Assert(!_visible);
_visible = true;
break;
case ToolWindowContentVisibilityEvent.Hidden:
Debug.Assert(_added);
Debug.Assert(_visible);
_visible = false;
break;
}
#endif
if (moving && (visEvent == TabContentVisibilityEvent.Added || visEvent == TabContentVisibilityEvent.Removed))
{
// Don't send the Added/Removed events
moving = false;
}
else
{
Content.OnVisibilityChanged(ev.Value);
}
}
switch (visEvent)
{
case TabContentVisibilityEvent.Removed:
elementZoomer.Dispose();
RemoveEvents();
if (contentPresenter != null)
{
contentPresenter.Content = null;
}
contentPresenter = null;
OnPropertyChanged(nameof(UIObject));
ContentUIObject = null;
break;
case TabContentVisibilityEvent.GotKeyboardFocus:
IsActive = true;
break;
case TabContentVisibilityEvent.LostKeyboardFocus:
IsActive = false;
break;
}
}