Use smart pointers for class owned pointers

xfa/fwl/core/fwl_formimp.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 "xfa/fwl/core/fwl_formimp.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/basewidget/fwl_formproxyimp.h"
@@ skipping 57 matching lines @@
 
 RestoreResizeInfo::~RestoreResizeInfo() {}
 
 CFWL_FormImp::CFWL_FormImp(const CFWL_WidgetImpProperties& properties,
                            IFWL_Widget* pOuter)
     : CFWL_WidgetImp(properties, pOuter),
       m_pCloseBox(nullptr),
       m_pMinBox(nullptr),
       m_pMaxBox(nullptr),
       m_pCaptionBox(nullptr),
-      m_pNoteLoop(nullptr),
       m_pSubFocus(nullptr),
       m_fCXBorder(0),
       m_fCYBorder(0),
       m_iCaptureBtn(-1),
       m_iSysBox(0),
       m_eResizeType(FORM_RESIZETYPE_None),
       m_bLButtonDown(FALSE),
       m_bMaximized(false),
       m_bSetMaximize(FALSE),
       m_bCustomizeLayout(FALSE),
       m_eFormSize(FWL_FORMSIZE_Manual),
       m_bDoModalFlag(FALSE),
       m_pBigIcon(nullptr),
       m_pSmallIcon(nullptr),
       m_bMouseIn(FALSE) {
   m_rtRelative.Reset();
   m_rtCaption.Reset();
   m_rtRestore.Reset();
   m_rtCaptionText.Reset();
   m_rtIcon.Reset();
 }
 
 CFWL_FormImp::~CFWL_FormImp() {
   RemoveSysButtons();
-  delete m_pNoteLoop;
 }
 
 FWL_Error CFWL_FormImp::GetClassName(CFX_WideString& wsClass) const {
   wsClass = FWL_CLASS_Form;
   return FWL_Error::Succeeded;
 }
 
 FWL_Type CFWL_FormImp::GetClassID() const {
   return FWL_Type::Form;
 }
@@ skipping 250 matching lines @@
     if (m_pMinBox) {
       param.m_iPart = CFWL_Part::MinimizeBox;
       param.m_dwStates = m_pMinBox->GetPartState();
       param.m_rtPart = m_pMinBox->m_rtBtn;
       pTheme->DrawBackground(&param);
     }
   }
 #endif
   return FWL_Error::Succeeded;
 }
+
 FWL_FORMSIZE CFWL_FormImp::GetFormSize() {
   return m_eFormSize;
 }
+
 FWL_Error CFWL_FormImp::SetFormSize(FWL_FORMSIZE eFormSize) {
   m_eFormSize = eFormSize;
   return FWL_Error::Succeeded;
 }
+
 IFWL_Widget* CFWL_FormImp::DoModal() {
   IFWL_App* pApp = GetOwnerApp();
   if (!pApp)
     return nullptr;
 
   CFWL_NoteDriver* pDriver = pApp->GetNoteDriver();
   if (!pDriver)
     return nullptr;
 
-  m_pNoteLoop = new CFWL_NoteLoop(this);
-  pDriver->PushNoteLoop(m_pNoteLoop);
+  m_pNoteLoop.reset(new CFWL_NoteLoop(this));
+  pDriver->PushNoteLoop(m_pNoteLoop.get());
   m_bDoModalFlag = TRUE;
   SetStates(FWL_WGTSTATE_Invisible, FALSE);
   pDriver->Run();
 #if (_FX_OS_ == _FX_MACOSX_)
 #else
   pDriver->PopNoteLoop();
 #endif
-  delete m_pNoteLoop;
-  m_pNoteLoop = nullptr;
+  m_pNoteLoop.reset();
   return nullptr;
 }
+
 IFWL_Widget* CFWL_FormImp::DoModal(uint32_t& dwCommandID) {
   return DoModal();
 }
+
 FWL_Error CFWL_FormImp::EndDoModal() {
   if (!m_pNoteLoop)
     return FWL_Error::Indefinite;
   m_bDoModalFlag = FALSE;
 #if (_FX_OS_ == _FX_MACOSX_)
   m_pNoteLoop->EndModalLoop();
   IFWL_App* pApp = GetOwnerApp();
   if (!pApp)
     return FWL_Error::Indefinite;
 
   CFWL_NoteDriver* pDriver =
       static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
   if (!pDriver)
     return FWL_Error::Indefinite;
 
   pDriver->PopNoteLoop();
   SetStates(FWL_WGTSTATE_Invisible, TRUE);
   return FWL_Error::Succeeded;
 #else
   SetStates(FWL_WGTSTATE_Invisible, TRUE);
   return m_pNoteLoop->EndModalLoop();
 #endif
 }
+
 FWL_Error CFWL_FormImp::SetBorderRegion(CFX_Path* pPath) {
   return FWL_Error::Succeeded;
 }
 void CFWL_FormImp::DrawBackground(CFX_Graphics* pGraphics,
                                   IFWL_ThemeProvider* pTheme) {
   CFWL_ThemeBackground param;
   param.m_pWidget = m_pInterface;
   param.m_iPart = CFWL_Part::Background;
   param.m_pGraphics = pGraphics;
   param.m_rtPart = m_rtRelative;
@@ skipping 724 matching lines @@
 
 uint32_t CFWL_SysBtn::GetPartState() const {
   if (IsDisabled())
     return CFWL_PartState_Disabled;
   if (m_dwState & FWL_SYSBUTTONSTATE_Pressed)
     return CFWL_PartState_Pressed;
   if (m_dwState & FWL_SYSBUTTONSTATE_Hover)
     return CFWL_PartState_Hovered;
   return CFWL_PartState_Normal;
 }