// ------------------------------------------------------------------
// Update visuals for list of paragraphs.
// ------------------------------------------------------------------
internal static void UpdateParaListVisuals(
PtsContext ptsContext,
VisualCollection visualCollection,
PTS.FSKUPDATE fskupdInherited,
PTS.FSPARADESCRIPTION [] arrayParaDesc)
{
// For each paragraph, do following:
// (1) Retrieve ParaClient object
// (3) Update visual, if necessary
for (int index = 0; index < arrayParaDesc.Length; index++)
{
// (1) Retrieve ParaClient object
BaseParaClient paraClient = ptsContext.HandleToObject(arrayParaDesc[index].pfsparaclient) as BaseParaClient;
PTS.ValidateHandle(paraClient);
// (2) Update visual, if necessary
PTS.FSKUPDATE fskupd = arrayParaDesc[index].fsupdinf.fskupd;
if (fskupd == PTS.FSKUPDATE.fskupdInherited)
{
fskupd = fskupdInherited;
}
if (fskupd == PTS.FSKUPDATE.fskupdNew)
{
// Disconnect visual from its old parent, if necessary.
Visual currentParent = VisualTreeHelper.GetParent(paraClient.Visual) as Visual;
if(currentParent != null)
{
ContainerVisual parent = currentParent as ContainerVisual;
Invariant.Assert(parent != null, "parent should always derives from ContainerVisual");
parent.Children.Remove(paraClient.Visual);
}
// New paragraph - insert new visual node
visualCollection.Insert(index, paraClient.Visual);
paraClient.ValidateVisual(fskupd);
}
else
{
// Remove visuals for non-existing paragraphs
while (visualCollection[index] != paraClient.Visual)
{
visualCollection.RemoveAt(index);
Invariant.Assert(index < visualCollection.Count);
}
if(fskupd == PTS.FSKUPDATE.fskupdChangeInside || fskupd == PTS.FSKUPDATE.fskupdShifted)
{
paraClient.ValidateVisual(fskupd);
}
}
}
// Remove obsolete visuals
if (arrayParaDesc.Length < visualCollection.Count)
{
visualCollection.RemoveRange(arrayParaDesc.Length, visualCollection.Count - arrayParaDesc.Length);
}
}
// Replace objects in graphicsList with objects from clone list
private static void ReplaceObjects(VisualCollection graphicsList, List<PropertiesGraphicsBase> list)
{
for (int i = 0; i < graphicsList.Count; i++)
{
PropertiesGraphicsBase replacement = null;
foreach (PropertiesGraphicsBase o in list)
{
if (o.ID == ((GraphicsBase)graphicsList[i]).Id)
{
replacement = o;
break;
}
}
if (replacement != null)
{
// Replace object with its clone
graphicsList.RemoveAt(i);
graphicsList.Insert(i, replacement.CreateGraphics());
}
}
}
