internal void SetLogicalElement(VisualElement element)
{
this._logicalElement = element;
}
public void Add(VisualElement element)
{
this._elements.Add(element);
}
private bool UpdateTrackingElement(VisualElement element)
{
if (element == this._hotElement)
{
return false;
}
if (this._hotElement != null)
{
this._hotElement.EndTracking();
this._hotElement = null;
}
Cursor hand = Cursors.Default;
this._hotElement = element;
if (this._hotElement != null)
{
this._hotElement.BeginTracking();
if (this._hotElement.Clickable)
{
hand = Cursors.Hand;
}
}
this.Cursor = hand;
base.Invalidate();
return true;
}
private void UpdateRendering(bool maintainLocality)
{
Point autoScrollPosition = base.AutoScrollPosition;
int num = this._focusIndex;
if (num != -1)
{
((VisualElement) this._focusableElements[num]).SetFocus(false);
}
if (this._hotElement != null)
{
this._hotElement.EndTracking();
this._hotElement = null;
}
this._trackedElements = null;
this._focusIndex = -1;
this._focusableElements = null;
if (base.IsHandleCreated)
{
Size empty = Size.Empty;
if (this._page != null)
{
using (Graphics graphics = base.CreateGraphics())
{
empty = this.CalculateRendering(graphics);
}
}
base.AutoScrollMinSize = empty;
if (maintainLocality)
{
if (((num != -1) && (this._focusableElements != null)) && (this._focusableElements.Count > num))
{
this._focusIndex = num;
((VisualElement) this._focusableElements[this._focusIndex]).SetFocus(true);
}
base.AutoScrollPosition = new Point(-autoScrollPosition.X, -autoScrollPosition.Y);
}
this.UpdateToolTip();
base.Invalidate();
}
}
void IContentElementHost.AddTrackedElement(VisualElement element)
{
if (element.RequiresTracking)
{
if (this._trackedElements == null)
{
this._trackedElements = new ArrayList();
}
this._trackedElements.Add(element);
}
if (element.Clickable)
{
if (this._focusableElements == null)
{
this._focusableElements = new ArrayList();
}
this._focusableElements.Add(element);
}
}
public void EnsureVisible(VisualElement element)
{
Point autoScrollPosition = base.AutoScrollPosition;
Rectangle contentBounds = element.ContentBounds;
Rectangle clientRectangle = base.ClientRectangle;
contentBounds.Inflate(2, 2);
clientRectangle.Offset(-autoScrollPosition.X, -autoScrollPosition.Y);
if (!clientRectangle.Contains(contentBounds))
{
Point location = contentBounds.Location;
clientRectangle = base.ClientRectangle;
clientRectangle.Offset(location.X, -autoScrollPosition.Y);
if (clientRectangle.Contains(contentBounds))
{
location = new Point(location.X, -autoScrollPosition.Y);
}
base.AutoScrollPosition = location;
}
}
