// Intended for Model related visual objects
public void ClearVisual(VisualObject Depiction)
{
// IMPORTANT: This is required in order to do successful undos and redos.
if (this.OwnerView.IsEditingActive && !this.OwnerView.EditEngine.IsVariating)
{
// Console.WriteLine("Warning: Remove-visual should be applied within a Command");
throw new UsageAnomaly("Remove-visual must be applied within a Command");
}
var Index = this.OwnerView.ViewChildren.IndexOfMatch(child => child.Key.IsEqual(Depiction));
if (Index < 0)
{
return;
}
// Remove adorners
if (this.ExposedAdorners.ContainsKey(Depiction))
{
if (this.OwnerView.Manipulator.ExposedAdornerLayer != null)
{
this.OwnerView.Manipulator.ExposedAdornerLayer.Remove(this.ExposedAdorners[Depiction]);
}
this.ExposedAdorners.Remove(Depiction);
}
// Update levels
var Level = this.OwnerView.GetLevelOf(Depiction);
if (Level != null && Level.HasValue)
{
if (Level.Value == EVisualLevel.Floatings)
{
this.OwnerView.VisualCountOfFloatings--;
}
else
if (Level.Value <= EVisualLevel.Regions)
{
this.OwnerView.VisualLevelForRegions--;
if (Level.Value <= EVisualLevel.Background)
{
this.OwnerView.VisualLevelForBackground--;
}
}
}
// Delete visual
this.OwnerView.ViewChildren.RemoveAt(Index);
Depiction.IsRelatedVisible = false;
}
/// <summary>
/// Adds the supplied depiction to the displayed view to the top of the specified initial-level (first time).
/// </summary>
public void PutVisual(VisualObject Depiction, EVisualLevel InitialLevel = EVisualLevel.Elements)
{
if (InitialLevel == EVisualLevel.Transients)
{
throw new UsageAnomaly("Transient visuals cannot be displayed via PutVisual().");
}
// IMPORTANT: This is required in order to do successful undos and redos.
if (this.OwnerView.IsEditingActive && !this.OwnerView.EditEngine.IsVariating)
{
// Console.WriteLine("Warning: Add-visual should be applied within a Command");
throw new UsageAnomaly("Put-visual must be applied within a Command");
}
// Remove adorners, if any.
if (this.ExposedAdorners.ContainsKey(Depiction))
{
if (this.OwnerView.Manipulator.ExposedAdornerLayer != null)
{
this.OwnerView.Manipulator.ExposedAdornerLayer.Remove(this.ExposedAdorners[Depiction]);
}
this.ExposedAdorners.Remove(Depiction);
}
var Index = this.OwnerView.ViewChildren.IndexOfMatch(reg => reg.Key.IsEqual(Depiction));
// Refresh graphic
Depiction.GenerateGraphic(this, true);
// Add, Insert or Update
var VisReg = ViewChild.Create(Depiction, Depiction.Graphic);
if (Index < 0)
{
// Start ready for Elements
var Limit = (this.OwnerView.ViewChildren.Count - (this.OwnerView.VisualCountOfFloatings + this.TransientObjectsCount)) - 1;
if (InitialLevel == EVisualLevel.Floatings)
{
this.OwnerView.VisualCountOfFloatings++;
Limit = (this.OwnerView.ViewChildren.Count - this.TransientObjectsCount);
}
else
if (InitialLevel <= EVisualLevel.Regions)
{
this.OwnerView.VisualLevelForRegions++;
Limit = this.OwnerView.VisualLevelForRegions;
if (InitialLevel <= EVisualLevel.Background)
{
this.OwnerView.VisualLevelForBackground++;
Limit = this.OwnerView.VisualLevelForBackground;
}
}
else
if (InitialLevel > EVisualLevel.Regions)
{
Limit = this.OwnerView.VisualLevelForRegions + 1;
}
else
if (InitialLevel > EVisualLevel.Background)
{
Limit = this.OwnerView.VisualLevelForBackground + 1;
}
if (Limit <= this.OwnerView.ViewChildren.Count - 1)
{
this.OwnerView.ViewChildren.Add(null);
for (int ShiftIndex = this.OwnerView.ViewChildren.Count - 1; ShiftIndex > Limit; ShiftIndex--)
{
var TempShifted = this.OwnerView.ViewChildren[ShiftIndex - 1];
this.OwnerView.ViewChildren[ShiftIndex - 1] = null;
this.OwnerView.ViewChildren[ShiftIndex] = ViewChild.Create(TempShifted);
}
this.OwnerView.ViewChildren[Limit] = VisReg;
}
else
{
this.OwnerView.ViewChildren.Add(VisReg);
Index = this.OwnerView.ViewChildren.Count - 1;
}
}
else
{
/*T var Previous = this.OwnerView.ViewChildren[Index];
* if (Previous.IsEqual(VisReg) || Previous == VisReg)
* Console.WriteLine("VP Equal:{0}, ==:{1}", Previous.IsEqual(VisReg), Previous == VisReg); */
this.OwnerView.ViewChildren[Index] = VisReg;
}
// Add adorners, if any.
if (this.OwnerView.RegisteredAdorners.ContainsKey(Depiction))
{
var Adorner = this.OwnerView.RegisteredAdorners[Depiction];
if (this.OwnerView.Manipulator.ExposedAdornerLayer != null)
{
/*+? var Preexistent = this.OwnerView.Manipulator.ExposedAdornerLayer.GetAdorners(Adorner.AdornedElement)
* .NullDefault(Enumerable.Empty<Adorner>()).Contains(Adorner);
* if (Preexistent)
* Console.WriteLine("Preexistent");
* else */
this.OwnerView.Manipulator.ExposedAdornerLayer.Add(Adorner);
}
this.ExposedAdorners.Add(Depiction, Adorner);
}
// Set as related-visible
Depiction.IsRelatedVisible = true;
}
// -------------------------------------------------------------------------------------------
/// <summary>
/// Indicates whether the supplied visual object exists in this presenter.
/// </summary>
public bool HasVisualObject(VisualObject Target)
{
return(this.OwnerView.ViewChildren.Any(reg => reg.Key.IsEqual(Target)));
}