public abstract bool TryMerge(TextUndoMetadata previousMetadata);
public override bool TryMerge(TextUndoMetadata previousMetadata)
{
var previousSelection = previousMetadata as SelectionUndoMetadata;
if (previousSelection == null)
{
// Can't merge -- previous metadata must be one of us
return false;
}
// Merge is simple -- just carry along the original OldSelection value
this.OldSelection = previousSelection.OldSelection;
return true;
}
public abstract bool TryMerge(TextUndoMetadata previousMetadata);