Introduce "underlying types" to abstract XFA differences.

fpdfsdk/src/fsdk_actionhandler.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../include/fpdfxfa/fpdfxfa_doc.h"
 #include "fpdfsdk/include/fsdk_actionhandler.h"
 #include "fpdfsdk/include/fsdk_define.h"
 #include "fpdfsdk/include/fsdk_mgr.h"
@@ skipping 416 matching lines @@
 
 FX_BOOL CPDFSDK_ActionHandler::IsValidDocView(CPDFSDK_Document* pDocument) {
   ASSERT(pDocument);
   return TRUE;
 }
 
 void CPDFSDK_ActionHandler::DoAction_GoTo(CPDFSDK_Document* pDocument,
                                           const CPDF_Action& action) {
   ASSERT(action);
 
-  CPDF_Document* pPDFDocument = pDocument->GetDocument()->GetPDFDoc();
+  CPDF_Document* pPDFDocument = pDocument->GetPDFDocument();
   ASSERT(pPDFDocument);
 
   CPDF_Dest MyDest = action.GetDest(pPDFDocument);
   int nPageIndex = MyDest.GetPageIndex(pPDFDocument);
   int nFitType = MyDest.GetZoomMode();
   const CPDF_Array* pMyArray = ToArray(MyDest.GetObject());
   float* pPosAry = nullptr;
   int sizeOfAry = 0;
   if (pMyArray) {
     pPosAry = new float[pMyArray->GetCount()];
@@ skipping 15 matching lines @@
 void CPDFSDK_ActionHandler::DoAction_Launch(CPDFSDK_Document* pDocument,
                                             const CPDF_Action& action) {}
 
 void CPDFSDK_ActionHandler::DoAction_URI(CPDFSDK_Document* pDocument,
                                          const CPDF_Action& action) {
   ASSERT(action);
 
   CPDFDoc_Environment* pApp = pDocument->GetEnv();
   ASSERT(pApp != NULL);
 
-  CFX_ByteString sURI = action.GetURI(pDocument->GetDocument()->GetPDFDoc());
+  CFX_ByteString sURI = action.GetURI(pDocument->GetPDFDocument());
   pApp->FFI_DoURIAction(sURI.c_str());
 }
 
 void CPDFSDK_ActionHandler::DoAction_Named(CPDFSDK_Document* pDocument,
                                            const CPDF_Action& action) {
   ASSERT(action);
 
   CFX_ByteString csName = action.GetNamedAction();
   pDocument->GetEnv()->FFI_ExecuteNamedAction(csName);
 }
@@ skipping 195 matching lines @@
   CPDFSDK_InterForm* pInterForm = (CPDFSDK_InterForm*)pDocument->GetInterForm();
   ASSERT(pInterForm != NULL);
 
   if (pInterForm->DoAction_ImportData(action)) {
     pDocument->SetChangeMark();
     return TRUE;
   }
 
   return FALSE;
 }