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

fpdfsdk/src/formfiller/FFL_TextField.cpp

Index: fpdfsdk/src/formfiller/FFL_TextField.cpp
diff --git a/fpdfsdk/src/formfiller/FFL_TextField.cpp b/fpdfsdk/src/formfiller/FFL_TextField.cpp
index 2dc82a892e48e44e96cffa57100f2e031531d3d7..2962451101aad2e5e8ea1b6a2986df0e0b5bffec 100644
--- a/fpdfsdk/src/formfiller/FFL_TextField.cpp
+++ b/fpdfsdk/src/formfiller/FFL_TextField.cpp
@@ -268,6 +268,16 @@ CPWL_Wnd* CFFL_TextField::ResetPDFWindow(CPDFSDK_PageView* pPageView,
   return pRet;
 }
 
+#ifdef PDF_ENABLE_XFA
+FX_BOOL CFFL_TextField::IsFieldFull(CPDFSDK_PageView* pPageView) {
+  if (CPWL_Edit* pWnd = (CPWL_Edit*)GetPDFWindow(pPageView, FALSE)) {
+    return pWnd->IsTextFull();
+  }
+
+  return FALSE;
+}
+
+#endif
 void CFFL_TextField::OnSetFocus(CPWL_Wnd* pWnd) {
   ASSERT(m_pApp != NULL);