Fold IFWL*::{Initialize|Finalize} into constructor/destructor

xfa/fwl/core/ifwl_form.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/ifwl_form.h"
 
+#include "third_party/base/ptr_util.h"
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/core/cfwl_message.h"
 #include "xfa/fwl/core/cfwl_themebackground.h"
 #include "xfa/fwl/core/cfwl_themepart.h"
 #include "xfa/fwl/core/cfwl_themetext.h"
 #include "xfa/fwl/core/cfwl_widgetmgr.h"
 #include "xfa/fwl/core/fwl_noteimp.h"
 #include "xfa/fwl/core/ifwl_app.h"
 #include "xfa/fwl/core/ifwl_formproxy.h"
 #include "xfa/fwl/core/ifwl_themeprovider.h"
@@ skipping 38 matching lines @@
       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();
+
+  RegisterForm();
+  RegisterEventTarget();
+  SetDelegate(pdfium::MakeUnique<CFWL_FormImpDelegate>(this));
 }
 
 IFWL_Form::~IFWL_Form() {
+  UnregisterEventTarget();
+  UnRegisterForm();
   RemoveSysButtons();
 }
 
-void IFWL_Form::Initialize() {
-  IFWL_Widget::Initialize();
-
-  RegisterForm();
-  RegisterEventTarget();
-  m_pDelegate = new CFWL_FormImpDelegate(this);
-}
-
-void IFWL_Form::Finalize() {
-  delete m_pDelegate;
-  m_pDelegate = nullptr;
-  UnregisterEventTarget();
-  UnRegisterForm();
-  IFWL_Widget::Finalize();
-}
-
 FWL_Type IFWL_Form::GetClassID() const {
   return FWL_Type::Form;
 }
 
 FX_BOOL IFWL_Form::IsInstance(const CFX_WideStringC& wsClass) const {
   if (wsClass == CFX_WideStringC(FWL_CLASS_Form))
     return TRUE;
   return IFWL_Widget::IsInstance(wsClass);
 }
 
@@ skipping 996 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;
 }