SIL.FieldWorks.IText.InterlinDocForAnalysis.GetLineInfo C# (CSharp) Method

		private bool GetLineInfo(ISegment curSeg, INote curNote, int tag, int ichAnchor, int ichEnd, int wid,
						out int id, out int lineNum, out WhichEnd where, out bool isRightToLeft, out bool hasPrompt)
		{
			isRightToLeft = false;
			hasPrompt = false;
			var wsf = Cache.WritingSystemFactory;
			var ws = wsf.get_EngineOrNull(wid);
			if (ws != null)
				isRightToLeft = ws.RightToLeftScript;

			id = 0;
			lineNum = -1;
			where = WhichEnd.Neither;
			switch (tag)
			{
				case SegmentTags.kflidFreeTranslation:
					id = InterlinLineChoices.kflidFreeTrans;
					where = ExtremePositionInString(ichAnchor, ichEnd, curSeg.FreeTranslation.get_String(wid).Length, isRightToLeft);
					break;
				case SegmentTags.kflidLiteralTranslation:
					id = InterlinLineChoices.kflidLitTrans;
					where = ExtremePositionInString(ichAnchor, ichEnd, curSeg.LiteralTranslation.get_String(wid).Length, isRightToLeft);
					break;
				case NoteTags.kflidContent:
					Debug.Assert(curNote != null, "Moving from a non-exisiting note in interlinear Doc.");
					id = InterlinLineChoices.kflidNote;
					where = ExtremePositionInString(ichAnchor, ichEnd, curNote.Content.get_String(wid).Length, isRightToLeft);
					break;
				case kTagUserPrompt: // user prompt property for empty translation annotations
					// Is this free or literal?
					hasPrompt = true;
					id = m_vc.ActiveFreeformFlid;
					id = (id == SegmentTags.kflidLiteralTranslation) ?
						InterlinLineChoices.kflidLitTrans : InterlinLineChoices.kflidFreeTrans;
					if (wid == 0)
						wid = m_vc.ActiveFreeformWs;
					where = WhichEnd.Both;
					break;
				default: // not expected
					return false;
			}
			if (wid > 0)
				lineNum = LineChoices.IndexOf(id, wid);
			if (lineNum == -1)
				lineNum = LineChoices.IndexOf(id);
			return true;
		}