public void Compact()
{
// the idea is to glue each text part that has the same attributes
// to a combined new one to reduce the number of parts as they are
// expensive when serialized
// nothing to glue
if (MessageParts.Count <= 1)
{
return;
}
var parts = new List <MessagePartModel>(MessageParts.Count);
StringBuilder gluedText = null;
bool dontMoveNext = false;
var iter = MessageParts.GetEnumerator();
while (dontMoveNext || iter.MoveNext())
{
dontMoveNext = false;
var current = iter.Current;
parts.Add(current);
// we can only glue pure text (not URLs etc)
if (current.GetType() != typeof(TextMessagePartModel))
{
continue;
}
var currentText = (TextMessagePartModel)current;
while (iter.MoveNext())
{
var next = iter.Current;
if (next.GetType() != typeof(TextMessagePartModel))
{
parts.Add(next);
break;
}
var nextText = (TextMessagePartModel)next;
if (!currentText.AttributesEquals(nextText))
{
// they aren't the same! no candidate for glueing :/
// but maybe the next part is
dontMoveNext = true;
break;
}
// glue time!
if (gluedText == null)
{
// this is the first element of the gluing
gluedText = new StringBuilder(256);
gluedText.Append(currentText.Text);
}
gluedText.Append(nextText.Text);
}
if (gluedText != null)
{
currentText.Text = gluedText.ToString();
gluedText = null;
}
}
f_MessageParts = parts;
}
