/// ------------------------------------------------------------------------------------
/// <summary>
/// This is the main interesting method of displaying objects and fragments of them.
/// A Scripture is displayed by displaying its Books;
/// and a Book is displayed by displaying its Title and Sections;
/// and a Section is diplayed by displaying its Heading and Content;
/// which are displayed by using the standard view constructor for StText.
///
/// This override provides special difference highlighting for a paragraph.
/// </summary>
/// ------------------------------------------------------------------------------------
public override void Display(IVwEnv vwenv, int hvo, int frag)
{
CheckDisposed();
switch (frag)
{
case (int)StTextFrags.kfrPara:
{
// The hvo may refer to m_Differences.CurrentDifference, or to a subdiff,
// so find the correct one.
IScrTxtPara para = Cache.ServiceLocator.GetInstance <IScrTxtParaRepository>().GetObject(hvo);
Difference diff = FindDiff(para);
m_DispPropOverrides.Clear();
// If the diff represents added sections, and this paragraph belongs to it,
// we must highlight the whole para
bool fDisplayMissingParaPlaceholderAfter = false;
if (diff != null)
{
bool highlightWholePara = diff.IncludesWholePara(para, m_fRev);
// If the given paragraph has differences to be highlighted,
// add appropriate properties
if ((diff.GetPara(m_fRev) == para || highlightWholePara) && m_fNeedHighlight)
{
// Need to add override properties for each run in the
// range to be highlighted.
// Determine the range of the paragraph that we want to highlight.
int paraMinHighlight = highlightWholePara ? 0 : diff.GetIchMin(m_fRev);
int paraLimHighlight = highlightWholePara ?
para.Contents.Length : diff.GetIchLim(m_fRev);
if (paraMinHighlight == paraLimHighlight &&
IsParagraphAdditionOrDeletion(diff.DiffType))
{
if (paraMinHighlight == 0)
{
InsertMissingContentPara(vwenv);
}
else
{
fDisplayMissingParaPlaceholderAfter = true;
}
}
MakeDispPropOverrides(para, paraMinHighlight, paraLimHighlight,
delegate(ref DispPropOverride prop)
{
prop.chrp.clrBack = kHighlightColor;
});
}
}
// the base Display will do the actual displaying of the Para frag
base.Display(vwenv, hvo, frag);
if (fDisplayMissingParaPlaceholderAfter)
{
InsertMissingContentPara(vwenv);
}
break;
}
default:
// handle all other frags
base.Display(vwenv, hvo, frag);
break;
}
}
