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

fpdfsdk/src/pdfwindow/PWL_ComboBox.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/pdfwindow/PDFWindow.h"
 #include "fpdfsdk/include/pdfwindow/PWL_ComboBox.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Edit.h"
 #include "fpdfsdk/include/pdfwindow/PWL_EditCtrl.h"
@@ skipping 453 matching lines @@
   if (!m_pList)
     return;
   if (bPopup == m_bPopup)
     return;
   FX_FLOAT fListHeight = m_pList->GetContentRect().Height();
   if (!IsFloatBigger(fListHeight, 0.0f))
     return;
 
   if (bPopup) {
     if (m_pFillerNotify) {
+#ifdef PDF_ENABLE_XFA
+      FX_BOOL bExit = FALSE;
+      m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), bExit, 0);
+      if (bExit)
+        return;
+
+#endif
       int32_t nWhere = 0;
       FX_FLOAT fPopupRet = 0.0f;
       FX_FLOAT fPopupMin = 0.0f;
       if (m_pList->GetCount() > 3)
         fPopupMin =
             m_pList->GetFirstHeight() * 3 + m_pList->GetBorderWidth() * 2;
       FX_FLOAT fPopupMax = fListHeight + m_pList->GetBorderWidth() * 2;
       m_pFillerNotify->QueryWherePopup(GetAttachedData(), fPopupMin, fPopupMax,
                                        nWhere, fPopupRet);
 
       if (IsFloatBigger(fPopupRet, 0.0f)) {
         m_bPopup = bPopup;
 
         CPDF_Rect rcWindow = CPWL_Wnd::GetWindowRect();
         m_rcOldWindow = rcWindow;
         switch (nWhere) {
           default:
           case 0:
             rcWindow.bottom -= fPopupRet;
             break;
           case 1:
             rcWindow.top += fPopupRet;
             break;
         }
 
         m_nPopupWhere = nWhere;
         Move(rcWindow, TRUE, TRUE);
+#ifdef PDF_ENABLE_XFA
+
+        bExit = FALSE;
+        m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), bExit, 0);
+        if (bExit)
+          return;
+#endif
       }
     }
   } else {
     m_bPopup = bPopup;
     Move(m_rcOldWindow, TRUE, TRUE);
   }
 }
 
 FX_BOOL CPWL_ComboBox::OnKeyDown(FX_WORD nChar, FX_DWORD nFlag) {
   if (!m_pList)
     return FALSE;
   if (!m_pEdit)
     return FALSE;
 
   m_nSelectItem = -1;
 
   switch (nChar) {
     case FWL_VKEY_Up:
       if (m_pList->GetCurSel() > 0) {
         FX_BOOL bExit = FALSE;
+#ifdef PDF_ENABLE_XFA
+
+        if (m_pFillerNotify) {
+          m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), bExit, nFlag);
+          if (bExit)
+            return FALSE;
+          bExit = FALSE;
+          m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), bExit, nFlag);
+          if (bExit)
+            return FALSE;
+        }
+#endif
         if (m_pList->OnKeyDownWithExit(nChar, bExit, nFlag)) {
           if (bExit)
             return FALSE;
           SetSelectText();
         }
       }
       return TRUE;
     case FWL_VKEY_Down:
       if (m_pList->GetCurSel() < m_pList->GetCount() - 1) {
         FX_BOOL bExit = FALSE;
+#ifdef PDF_ENABLE_XFA
+
+        if (m_pFillerNotify) {
+          m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), bExit, nFlag);
+          if (bExit)
+            return FALSE;
+          bExit = FALSE;
+          m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), bExit, nFlag);
+          if (bExit)
+            return FALSE;
+        }
+#endif
         if (m_pList->OnKeyDownWithExit(nChar, bExit, nFlag)) {
           if (bExit)
             return FALSE;
           SetSelectText();
         }
       }
       return TRUE;
   }
 
   if (HasFlag(PCBS_ALLOWCUSTOMTEXT))
     return m_pEdit->OnKeyDown(nChar, nFlag);
 
   return FALSE;
 }
 
 FX_BOOL CPWL_ComboBox::OnChar(FX_WORD nChar, FX_DWORD nFlag) {
   if (!m_pList)
     return FALSE;
 
   if (!m_pEdit)
     return FALSE;
 
   m_nSelectItem = -1;
   if (HasFlag(PCBS_ALLOWCUSTOMTEXT))
     return m_pEdit->OnChar(nChar, nFlag);
 
   FX_BOOL bExit = FALSE;
+#ifdef PDF_ENABLE_XFA
+  if (m_pFillerNotify) {
+    m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), bExit, nFlag);
+    if (bExit)
+      return FALSE;
+
+    m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), bExit, nFlag);
+    if (bExit)
+      return FALSE;
+  }
+#endif
   return m_pList->OnCharWithExit(nChar, bExit, nFlag) ? bExit : FALSE;
 }
 
 void CPWL_ComboBox::OnNotify(CPWL_Wnd* pWnd,
                              FX_DWORD msg,
                              intptr_t wParam,
                              intptr_t lParam) {
   switch (msg) {
     case PNM_LBUTTONDOWN:
       if (pWnd == m_pButton) {
@@ skipping 35 matching lines @@
 
 void CPWL_ComboBox::SetFillerNotify(IPWL_Filler_Notify* pNotify) {
   m_pFillerNotify = pNotify;
 
   if (m_pEdit)
     m_pEdit->SetFillerNotify(pNotify);
 
   if (m_pList)
     m_pList->SetFillerNotify(pNotify);
 }