public bool IsInputable(int position)
{
if (position == 0 || position == ProfileText.Length)
{
return(true);
}
var pos = ProfileTextPostionList.FindAtPosition(position);
if (pos.Position.Offset == position)
{
return(true);
}
if (pos.Position.Offset + pos.Position.Length == position)
{
return(true);
}
if (pos.Fragment.FragmentType == FragmentType.Text)
{
return(true);
}
return(false);
}
public void GetFragmentsAt(out Fragment before, out Fragment after, int position)
{
var pos = ProfileTextPostionList.FindAtPosition(position);
if (pos == null)
{
before = Profile;
after = null;
return;
}
if (pos.Position.Offset + pos.Position.Length == position)
{
before = pos.Fragment;
after = null;
return;
}
if (pos.Position.Offset != position && pos.Position.Offset + pos.Position.Length != position)
{
before = pos.Fragment;
after = pos.Fragment;
return;
}
after = pos.Fragment;
var fragments = ((FragmentBody)after.Parent).FragmentList;
var i = fragments.IndexOf(after);
if (i == 0 && after.ParentFragment.FragmentType == FragmentType.TextBlock)
{
fragments = ((FragmentBody)after.ParentFragment.Parent).FragmentList;
i = fragments.IndexOf(after.ParentFragment);
}
before = i == 0 ? null : fragments[i - 1];
}
