private bool EnsureElementPageEqualsKidPage(PdfStructElem elem, PdfDictionary kidPage)
{
PdfObject pageObject = elem.GetPdfObject().Get(PdfName.Pg);
if (pageObject == null)
{
pageObject = kidPage;
elem.GetPdfObject().Put(PdfName.Pg, kidPage);
}
return(kidPage.Equals(pageObject));
}
private bool EnsureElementPageEqualsKidPage(PdfStructElem elem, PdfDictionary kidPage)
{
PdfObject pageObject = elem.GetPdfObject().Get(PdfName.Pg);
if (pageObject == null)
{
pageObject = kidPage;
// Explicitly using object indirect reference here in order to correctly process released objects.
elem.Put(PdfName.Pg, kidPage.GetIndirectReference());
}
return(kidPage.Equals(pageObject));
}
// it is StructTreeRoot
// should never happen as we always should have only one root tag and we don't remove it
private void FlushParentIfBelongsToPage(PdfStructElem parent, PdfPage currentPage)
{
if (parent.IsFlushed() || connectedStructToModel.ContainsKey(parent.GetPdfObject()) || parent.GetPdfObject
() == rootTagElement.GetPdfObject())
{
return;
}
IList <IPdfStructElem> kids = parent.GetKids();
bool allKidsBelongToPage = true;
foreach (IPdfStructElem kid in kids)
{
if (kid is PdfMcr)
{
PdfDictionary kidPage = ((PdfMcr)kid).GetPageObject();
if (!kidPage.IsFlushed() && !kidPage.Equals(currentPage.GetPdfObject()))
{
allKidsBelongToPage = false;
break;
}
}
else
{
if (kid is PdfStructElem)
{
// If kid is structElem and was already flushed then in kids list there will be null for it instead of
// PdfStructElem. And therefore if we get into this if clause it means that some StructElem wasn't flushed.
allKidsBelongToPage = false;
break;
}
}
}
if (allKidsBelongToPage)
{
IPdfStructElem parentsParent = parent.GetParent();
parent.Flush();
if (parentsParent is PdfStructElem)
{
FlushParentIfBelongsToPage((PdfStructElem)parentsParent, currentPage);
}
}
return;
}
internal virtual void FlushParentIfBelongsToPage(PdfStructElem parent, PdfPage currentPage)
{
if (parent.IsFlushed() || waitingTagsManager.GetObjForStructDict(parent.GetPdfObject()) != null || parent.
GetParent() is PdfStructTreeRoot)
{
return;
}
IList <IStructureNode> kids = parent.GetKids();
bool readyToBeFlushed = true;
foreach (IStructureNode kid in kids)
{
if (kid is PdfMcr)
{
PdfDictionary kidPage = ((PdfMcr)kid).GetPageObject();
if (!kidPage.IsFlushed() && (currentPage == null || !kidPage.Equals(currentPage.GetPdfObject())))
{
readyToBeFlushed = false;
break;
}
}
else
{
if (kid is PdfStructElem)
{
// If kid is structElem and was already flushed then in kids list there will be null for it instead of
// PdfStructElement. And therefore if we get into this if-clause it means that some StructElem wasn't flushed.
readyToBeFlushed = false;
break;
}
}
}
if (readyToBeFlushed)
{
IStructureNode parentsParent = parent.GetParent();
parent.Flush();
if (parentsParent is PdfStructElem)
{
FlushParentIfBelongsToPage((PdfStructElem)parentsParent, currentPage);
}
}
}
