private ParaChangeInfo EnsureParaInfo(int hvoFake, int hvoTargetPara)
{
var hvoPara = GetTargetObject(hvoFake);
if (hvoTargetPara != 0 && hvoPara != hvoTargetPara)
return null;
ParaChangeInfo info;
if (!m_changedParas.TryGetValue(hvoPara, out info))
{
int flid = FlidOfTarget(hvoPara);
int ws = 0;
if (flid == CmPictureTags.kflidCaption)
ws = m_cache.DefaultVernWs;
Debug.Assert(flid != 0);
info = new ParaChangeInfo(this, hvoPara, flid, ws);
m_changedParas[hvoPara] = info;
}
return info;
}
/// <summary>
/// Update offsets for the given paragraph
/// </summary>
private void UpdateOffsets(int hvoPara, ParaChangeInfo info)
{
int ichange = 0; // index into info.Changes;
int delta = 0; // amount to add to offsets of later words.
if (m_cache.GetClassOfObject(hvoPara) == StTxtPara.kclsidStTxtPara)
{
// Adjust segment-by-segment so as to keep track of how far each segment boundary is
// moved by the replacements within it.
IStTxtPara para = StTxtPara.CreateFromDBObject(m_cache, hvoPara);
List<int> segIds = para.Segments;
foreach (int currentSegmentId in segIds)
{
AdjustOffset(currentSegmentId, delta, kflidBeginOffset);
List<int> xficIds = para.SegmentForms(currentSegmentId);
AdjustXficOffsets(info, xficIds, ref delta, ref ichange);
AdjustOffset(currentSegmentId, delta, kflidEndOffset);
}
}
else
{
// Not a paragraph, so there won't be segments, and we can't make an IStTxtPara object.
// Just adjust all the wfics.
AdjustXficOffsets(info, info.Changes, ref delta, ref ichange);
}
}
/// <summary>
/// Adjust the offsets of the xfics (wfics or pfics, wordform-in-context or punct-in-context) given
/// in xficIds, which are a (sub)range of the ids in info.changes. Both input and output are the
/// total change in length and the index of the place we are up to in info.Changes.
/// </summary>
/// <param name="info"></param>
/// <param name="xficIds"></param>
/// <param name="delta"></param>
/// <param name="ichange"></param>
private void AdjustXficOffsets(ParaChangeInfo info, List<int> xficIds, ref int delta, ref int ichange)
{
foreach (int xfic in xficIds)
{
int beginTarget = BeginOffset(xfic);
for (; ichange < info.Changes.Count; ichange++)
{
int hvoChange = info.Changes[ichange];
int beginChange = BeginOffset(hvoChange);
if (beginChange >= beginTarget)
break;
ITsString tssOld = OldOccurrence(hvoChange);
string replacement = Replacement(tssOld);
delta += replacement.Length - tssOld.Length;
}
AdjustOffset(xfic, delta, kflidBeginOffset);
if (ichange < info.Changes.Count && info.Changes[ichange] == xfic)
{
// Adjusting the target itself...it's end needs a different adjustment.
// Pass delta to account for the fact that the begin offset of xfic has
// already been adjusted.
ITsString tssOld = OldOccurrence(xfic, delta);
string replacement = Replacement(tssOld);
delta += replacement.Length - tssOld.Length;
ichange++;
}
AdjustOffset(xfic, delta, kflidEndOffset);
}
}
private ParaChangeInfo EnsureParaInfo(int hvoCba, int hvoTargetPara)
{
int hvoPara = GetTargetObject(hvoCba);
if (hvoTargetPara != 0 && hvoPara != hvoTargetPara)
return null;
ParaChangeInfo info;
if (!m_changedParas.TryGetValue(hvoPara, out info))
{
int flid = m_cache.GetIntProperty(hvoCba, kflidFlid);
int ws = 0;
if (IsMultilingual(flid))
ws = m_cache.GetObjProperty(hvoCba, (int)CmBaseAnnotation.CmBaseAnnotationTags.kflidWritingSystem);
info = new ParaChangeInfo(hvoPara, flid, ws);
m_changedParas[hvoPara] = info;
}
return info;
}
