/// ------------------------------------------------------------------------------------
/// <summary>
/// Prevents IP-only selections from being associated with a verse number run.
/// </summary>
/// <param name="vwselNew">The new selection.</param>
/// <param name="prootb">The root box.</param>
/// <param name="updatedSelection"></param>
/// ------------------------------------------------------------------------------------
private void PreventIPAssociationWithVerseRun(IVwSelection vwselNew, IVwRootBox prootb,
ref bool updatedSelection)
{
// Need to commit any editing in progress - otherwise attempt to read
// paragraph that follows may get stale data. This follows the example in
// EditingHelper.SelectionChanged(). Also verify selection is still valid.
Commit(vwselNew);
if (!vwselNew.IsValid)
return;
SelectionHelper helper = SelectionHelper.Create(vwselNew, prootb.Site);
// Get the tss that the IP is in
ITsString tssSelectedScrPara = null;
if (helper.LevelInfo.Length > 0)
{
switch (m_cache.GetClassOfObject(helper.LevelInfo[0].hvo))
{
case CmTranslation.kclsidCmTranslation:
int hvo = helper.LevelInfo[0].hvo;
int btWs = Callbacks.GetWritingSystemForHvo(hvo);
CmTranslation trans = new CmTranslation(m_cache, hvo);
tssSelectedScrPara = trans.Translation.GetAlternative(btWs).UnderlyingTsString;
break;
case StTxtPara.kclsidStTxtPara:
StTxtPara para = new StTxtPara(m_cache, helper.LevelInfo[0].hvo);
tssSelectedScrPara = para.Contents.UnderlyingTsString;
break;
case CmPicture.kclsidCmPicture:
case StFootnote.kclsidStFootnote:
default:
// Not sure what it is, but it probably doesn't contain verse text...
break;
}
}
// Following code includes checking zero-length paragraphs for association with
// the VerseNumber style so that empty paras will use the default character style
if (tssSelectedScrPara == null)
return;
// Get the text props and run info of the run the IP is associating with
int charPos = helper.IchAnchor;
if (helper.AssocPrev && charPos > 0)
charPos -= 1;
if (charPos > tssSelectedScrPara.Length) // workaround for TE-5561
charPos = tssSelectedScrPara.Length;
TsRunInfo tri;
ITsTextProps ttp = tssSelectedScrPara.FetchRunInfoAt(charPos, out tri);
// These are the boundary conditions that require our intervention
// regarding verse numbers.
bool fEdgeOfTss = (helper.IchAnchor == 0 ||
helper.IchAnchor == tssSelectedScrPara.Length);
bool fBeginOfRun = (helper.IchAnchor == tri.ichMin);
bool fEndOfRun = (helper.IchAnchor == tri.ichLim);
if (!fEdgeOfTss && !fBeginOfRun && !fEndOfRun)
return;
// If the IP is associated with a verse number style run
if (ttp.GetStrPropValue((int)FwTextPropType.ktptNamedStyle) != ScrStyleNames.VerseNumber)
return;
try
{
m_selectionUpdateInProcess = true; //set our semaphore
// We must disassociate the IP from the verse number style run...
// If IP is at beginning or end of paragraph, need to reset selection to
// default paragraph chars (null style).
if (fEdgeOfTss)
{
// REVIEW: Should we be re-getting this, or just using the one we have?
vwselNew = prootb.Selection;
ITsPropsBldr bldr = ttp.GetBldr();
bldr.SetStrPropValue((int) FwTextPropType.ktptNamedStyle, null);
vwselNew.SetIpTypingProps(bldr.GetTextProps());
}
else
{
// Else make the selection be associated with the other adjacent run.
helper.AssocPrev = fBeginOfRun;
helper.SetSelection(true);
}
updatedSelection = true;
}
finally
{
m_selectionUpdateInProcess = false; // reset semaphore
}
}