Get rid of most instance of 'foo != NULL'

fpdfsdk/src/formfiller/FFL_CheckBox.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_CheckBox.h"
 #include "fpdfsdk/include/formfiller/FFL_FormFiller.h"
 #include "fpdfsdk/include/formfiller/FormFiller.h"
 
 /* ------------------------------- CFFL_CheckBox -------------------------------
  */
 
 CFFL_CheckBox::CFFL_CheckBox(CPDFDoc_Environment* pApp, CPDFSDK_Widget* pWidget)
     : CFFL_Button(pApp, pWidget) {}
 
 CFFL_CheckBox::~CFFL_CheckBox() {}
 
 CPWL_Wnd* CFFL_CheckBox::NewPDFWindow(const PWL_CREATEPARAM& cp,
                                       CPDFSDK_PageView* pPageView) {
   CPWL_CheckBox* pWnd = new CPWL_CheckBox();
   pWnd->Create(cp);
-
-  ASSERT(m_pWidget != NULL);
   pWnd->SetCheck(m_pWidget->IsChecked());
-
   return pWnd;
 }
 
 FX_BOOL CFFL_CheckBox::OnKeyDown(CPDFSDK_Annot* pAnnot,
                                  FX_UINT nKeyCode,
                                  FX_UINT nFlags) {
   switch (nKeyCode) {
     case FWL_VKEY_Return:
     case FWL_VKEY_Space:
       return TRUE;
     default:
       return CFFL_FormFiller::OnKeyDown(pAnnot, nKeyCode, nFlags);
   }
 }
 FX_BOOL CFFL_CheckBox::OnChar(CPDFSDK_Annot* pAnnot,
                               FX_UINT nChar,
                               FX_UINT nFlags) {
   switch (nChar) {
     case FWL_VKEY_Return:
     case FWL_VKEY_Space: {
       CFFL_IFormFiller* pIFormFiller = m_pApp->GetIFormFiller();
-      ASSERT(pIFormFiller != NULL);
+      ASSERT(pIFormFiller);
 
       CPDFSDK_PageView* pPageView = pAnnot->GetPageView();
-      ASSERT(pPageView != NULL);
+      ASSERT(pPageView);
 
       FX_BOOL bReset = FALSE;
       FX_BOOL bExit = FALSE;
 
       pIFormFiller->OnButtonUp(m_pWidget, pPageView, bReset, bExit, nFlags);
 
       if (bReset)
         return TRUE;
       if (bExit)
         return TRUE;
@@ skipping 25 matching lines @@
     }
 
     if (!CommitData(pPageView, nFlags))
       return FALSE;
   }
 
   return TRUE;
 }
 
 FX_BOOL CFFL_CheckBox::IsDataChanged(CPDFSDK_PageView* pPageView) {
-  ASSERT(m_pWidget != NULL);
-
-  if (CPWL_CheckBox* pWnd = (CPWL_CheckBox*)GetPDFWindow(pPageView, FALSE)) {
-    return pWnd->IsChecked() != m_pWidget->IsChecked();
-  }
-
-  return FALSE;
+  CPWL_CheckBox* pWnd = (CPWL_CheckBox*)GetPDFWindow(pPageView, FALSE);
+  return pWnd && pWnd->IsChecked() != m_pWidget->IsChecked();
 }
 
 void CFFL_CheckBox::SaveData(CPDFSDK_PageView* pPageView) {
-  ASSERT(m_pWidget != NULL);
-
   if (CPWL_CheckBox* pWnd = (CPWL_CheckBox*)GetPDFWindow(pPageView, FALSE)) {
     FX_BOOL bNewChecked = pWnd->IsChecked();
 
     if (bNewChecked) {
       CPDF_FormField* pField = m_pWidget->GetFormField();
       ASSERT(pField != NULL);
 
       for (int32_t i = 0, sz = pField->CountControls(); i < sz; i++) {
         if (CPDF_FormControl* pCtrl = pField->GetControl(i)) {
           if (pCtrl->IsChecked()) {
             break;
           }
         }
       }
     }
 
     m_pWidget->SetCheck(bNewChecked, FALSE);
     m_pWidget->UpdateField();
     SetChangeMark();
   }
 }