internal void Fill()
{
fields = new Hashtable();
PdfDictionary top = (PdfDictionary)PdfReader.GetPdfObjectRelease(reader.Catalog.Get(PdfName.ACROFORM));
if (top == null)
return;
PdfArray arrfds = (PdfArray)PdfReader.GetPdfObjectRelease(top.Get(PdfName.FIELDS));
if (arrfds == null || arrfds.Size == 0)
return;
for (int k = 1; k <= reader.NumberOfPages; ++k) {
PdfDictionary page = reader.GetPageNRelease(k);
PdfArray annots = (PdfArray)PdfReader.GetPdfObjectRelease(page.Get(PdfName.ANNOTS), page);
if (annots == null)
continue;
for (int j = 0; j < annots.Size; ++j) {
PdfDictionary annot = annots.GetAsDict(j);
if (annot == null) {
PdfReader.ReleaseLastXrefPartial(annots.GetAsIndirectObject(j));
continue;
}
if (!PdfName.WIDGET.Equals(annot.GetAsName(PdfName.SUBTYPE))) {
PdfReader.ReleaseLastXrefPartial(annots.GetAsIndirectObject(j));
continue;
}
PdfDictionary widget = annot;
PdfDictionary dic = new PdfDictionary();
dic.Merge(annot);
String name = "";
PdfDictionary value = null;
PdfObject lastV = null;
while (annot != null) {
dic.MergeDifferent(annot);
PdfString t = annot.GetAsString(PdfName.T);
if (t != null)
name = t.ToUnicodeString() + "." + name;
if (lastV == null && annot.Get(PdfName.V) != null)
lastV = PdfReader.GetPdfObjectRelease(annot.Get(PdfName.V));
if (value == null && t != null) {
value = annot;
if (annot.Get(PdfName.V) == null && lastV != null)
value.Put(PdfName.V, lastV);
}
annot = annot.GetAsDict(PdfName.PARENT);
}
if (name.Length > 0)
name = name.Substring(0, name.Length - 1);
Item item = (Item)fields[name];
if (item == null) {
item = new Item();
fields[name] = item;
}
if (value == null)
item.AddValue(widget);
else
item.AddValue(value);
item.AddWidget(widget);
item.AddWidgetRef(annots.GetAsIndirectObject(j)); // must be a reference
if (top != null)
dic.MergeDifferent(top);
item.AddMerged(dic);
item.AddPage(k);
item.AddTabOrder(j);
}
}
// some tools produce invisible signatures without an entry in the page annotation array
// look for a single level annotation
PdfNumber sigFlags = top.GetAsNumber(PdfName.SIGFLAGS);
if (sigFlags == null || (sigFlags.IntValue & 1) != 1)
return;
for (int j = 0; j < arrfds.Size; ++j) {
PdfDictionary annot = arrfds.GetAsDict(j);
if (annot == null) {
PdfReader.ReleaseLastXrefPartial(arrfds.GetAsIndirectObject(j));
continue;
}
if (!PdfName.WIDGET.Equals(annot.GetAsName(PdfName.SUBTYPE))) {
PdfReader.ReleaseLastXrefPartial(arrfds.GetAsIndirectObject(j));
continue;
}
PdfArray kids = (PdfArray)PdfReader.GetPdfObjectRelease(annot.Get(PdfName.KIDS));
if (kids != null)
continue;
PdfDictionary dic = new PdfDictionary();
dic.Merge(annot);
PdfString t = annot.GetAsString(PdfName.T);
if (t == null)
continue;
String name = t.ToUnicodeString();
if (fields.ContainsKey(name))
continue;
Item item = new Item();
fields[name] = item;
item.AddValue(dic);
item.AddWidget(dic);
item.AddWidgetRef(arrfds.GetAsIndirectObject(j)); // must be a reference
item.AddMerged(dic);
item.AddPage(-1);
item.AddTabOrder(-1);
}
}
protected PdfArray BranchForm(Hashtable level, PdfIndirectReference parent, String fname)
{
PdfArray arr = new PdfArray();
foreach (DictionaryEntry entry in level) {
String name = (String)entry.Key;
Object obj = entry.Value;
PdfIndirectReference ind = PdfIndirectReference;
PdfDictionary dic = new PdfDictionary();
if (parent != null)
dic.Put(PdfName.PARENT, parent);
dic.Put(PdfName.T, new PdfString(name, PdfObject.TEXT_UNICODE));
String fname2 = fname + "." + name;
int coidx = calculationOrder.IndexOf(fname2);
if (coidx >= 0)
calculationOrderRefs[coidx] = ind;
if (obj is Hashtable) {
dic.Put(PdfName.KIDS, BranchForm((Hashtable)obj, ind, fname2));
arr.Add(ind);
AddToBody(dic, ind);
}
else {
ArrayList list = (ArrayList)obj;
dic.MergeDifferent((PdfDictionary)list[0]);
if (list.Count == 3) {
dic.MergeDifferent((PdfDictionary)list[2]);
int page = (int)list[1];
PdfDictionary pageDic = (PdfDictionary)pageDics[page - 1];
PdfArray annots = pageDic.GetAsArray(PdfName.ANNOTS);
if (annots == null) {
annots = new PdfArray();
pageDic.Put(PdfName.ANNOTS, annots);
}
PdfNumber nn = (PdfNumber)dic.Get(iTextTag);
dic.Remove(iTextTag);
AdjustTabOrder(annots, ind, nn);
}
else {
PdfArray kids = new PdfArray();
for (int k = 1; k < list.Count; k += 2) {
int page = (int)list[k];
PdfDictionary pageDic = (PdfDictionary)pageDics[page - 1];
PdfArray annots = pageDic.GetAsArray(PdfName.ANNOTS);
if (annots == null) {
annots = new PdfArray();
pageDic.Put(PdfName.ANNOTS, annots);
}
PdfDictionary widget = new PdfDictionary();
widget.Merge((PdfDictionary)list[k + 1]);
widget.Put(PdfName.PARENT, ind);
PdfNumber nn = (PdfNumber)widget.Get(iTextTag);
widget.Remove(iTextTag);
PdfIndirectReference wref = AddToBody(widget).IndirectReference;
AdjustTabOrder(annots, wref, nn);
kids.Add(wref);
Propagate(widget, null, false);
}
dic.Put(PdfName.KIDS, kids);
}
arr.Add(ind);
AddToBody(dic, ind);
Propagate(dic, null, false);
}
}
return arr;
}
protected PdfArray BranchForm(Hashtable level, PdfIndirectReference parent, String fname)
{
PdfArray arr = new PdfArray();
foreach (DictionaryEntry entry in level)
{
String name = (String)entry.Key;
Object obj = entry.Value;
PdfIndirectReference ind = PdfIndirectReference;
PdfDictionary dic = new PdfDictionary();
if (parent != null)
{
dic.Put(PdfName.PARENT, parent);
}
dic.Put(PdfName.T, new PdfString(name, PdfObject.TEXT_UNICODE));
String fname2 = fname + "." + name;
int coidx = calculationOrder.IndexOf(fname2);
if (coidx >= 0)
{
calculationOrderRefs[coidx] = ind;
}
if (obj is Hashtable)
{
dic.Put(PdfName.KIDS, BranchForm((Hashtable)obj, ind, fname2));
arr.Add(ind);
AddToBody(dic, ind);
}
else
{
ArrayList list = (ArrayList)obj;
dic.MergeDifferent((PdfDictionary)list[0]);
if (list.Count == 3)
{
dic.MergeDifferent((PdfDictionary)list[2]);
int page = (int)list[1];
PdfDictionary pageDic = (PdfDictionary)pageDics[page - 1];
PdfArray annots = pageDic.GetAsArray(PdfName.ANNOTS);
if (annots == null)
{
annots = new PdfArray();
pageDic.Put(PdfName.ANNOTS, annots);
}
PdfNumber nn = (PdfNumber)dic.Get(iTextTag);
dic.Remove(iTextTag);
AdjustTabOrder(annots, ind, nn);
}
else
{
PdfArray kids = new PdfArray();
for (int k = 1; k < list.Count; k += 2)
{
int page = (int)list[k];
PdfDictionary pageDic = (PdfDictionary)pageDics[page - 1];
PdfArray annots = pageDic.GetAsArray(PdfName.ANNOTS);
if (annots == null)
{
annots = new PdfArray();
pageDic.Put(PdfName.ANNOTS, annots);
}
PdfDictionary widget = new PdfDictionary();
widget.Merge((PdfDictionary)list[k + 1]);
widget.Put(PdfName.PARENT, ind);
PdfNumber nn = (PdfNumber)widget.Get(iTextTag);
widget.Remove(iTextTag);
PdfIndirectReference wref = AddToBody(widget).IndirectReference;
AdjustTabOrder(annots, wref, nn);
kids.Add(wref);
Propagate(widget, null, false);
}
dic.Put(PdfName.KIDS, kids);
}
arr.Add(ind);
AddToBody(dic, ind);
Propagate(dic, null, false);
}
}
return(arr);
}
internal void AddDefaultColorDiff(PdfDictionary dic)
{
colorDictionary.MergeDifferent(dic);
}