fpdfsdk/ differences with XFA (for didactic purposes only).

fpdfsdk/src/formfiller/FFL_FormFiller.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 "fpdfsdk/include/formfiller/FFL_CBA_Fontmap.h"
 #include "fpdfsdk/include/formfiller/FFL_FormFiller.h"
 
 #define GetRed(rgb) ((uint8_t)(rgb))
@@ skipping 544 matching lines @@
   }
   return TRUE;
 }
 
 FX_BOOL CFFL_FormFiller::IsDataChanged(CPDFSDK_PageView* pPageView) {
   return FALSE;
 }
 
 void CFFL_FormFiller::SaveData(CPDFSDK_PageView* pPageView) {}
 
+#ifdef PDF_ENABLE_XFA
+FX_BOOL CFFL_FormFiller::IsFieldFull(CPDFSDK_PageView* pPageView) {
+  return FALSE;
+}
+
+#endif
 void CFFL_FormFiller::SetChangeMark() {
   m_pApp->FFI_OnChange();
 }
 
 void CFFL_FormFiller::GetActionData(CPDFSDK_PageView* pPageView,
                                     CPDF_AAction::AActionType type,
                                     PDFSDK_FieldAction& fa) {
   fa.sValue = m_pWidget->GetValue();
 }
 
@@ skipping 136 matching lines @@
     pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
 }
 
 void CFFL_Button::OnDrawDeactive(CPDFSDK_PageView* pPageView,
                                  CPDFSDK_Annot* pAnnot,
                                  CFX_RenderDevice* pDevice,
                                  CPDF_Matrix* pUser2Device,
                                  FX_DWORD dwFlags) {
   OnDraw(pPageView, pAnnot, pDevice, pUser2Device, dwFlags);
 }