From 29bd35451003e58ef4be06413cce5544c16c395d Mon Sep 17 00:00:00 2001
From: Tom Sepez <tsepez@chromium.org>
Date: Wed, 22 Mar 2017 13:24:18 -0700
Subject: Use unique_ptr in xfa_ffpushbutton.h

Change-Id: I605c1219b1090eb13d22237fa1d61d9defe137d5
Reviewed-on: https://pdfium-review.googlesource.com/3151
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
---
 xfa/fxfa/app/xfa_ffpushbutton.cpp | 62 ++++++++++++++++++---------------------
 xfa/fxfa/app/xfa_ffpushbutton.h   | 10 ++++---
 2 files changed, 35 insertions(+), 37 deletions(-)

diff --git a/xfa/fxfa/app/xfa_ffpushbutton.cpp b/xfa/fxfa/app/xfa_ffpushbutton.cpp
index 7989e3207d..2233c5a6bb 100644
--- a/xfa/fxfa/app/xfa_ffpushbutton.cpp
+++ b/xfa/fxfa/app/xfa_ffpushbutton.cpp
@@ -19,12 +19,7 @@
 #include "xfa/fxgraphics/cfx_path.h"
 
 CXFA_FFPushButton::CXFA_FFPushButton(CXFA_WidgetAcc* pDataAcc)
-    : CXFA_FFField(pDataAcc),
-      m_pRolloverTextLayout(nullptr),
-      m_pDownTextLayout(nullptr),
-      m_pDownProvider(nullptr),
-      m_pRollProvider(nullptr),
-      m_pOldDelegate(nullptr) {}
+    : CXFA_FFField(pDataAcc), m_pOldDelegate(nullptr) {}
 
 CXFA_FFPushButton::~CXFA_FFPushButton() {
   CXFA_FFPushButton::UnloadWidget();
@@ -86,14 +81,10 @@ void CXFA_FFPushButton::UpdateWidgetProperty() {
 }
 
 void CXFA_FFPushButton::UnloadWidget() {
-  delete m_pRolloverTextLayout;
-  m_pRolloverTextLayout = nullptr;
-  delete m_pDownTextLayout;
-  m_pDownTextLayout = nullptr;
-  delete m_pDownProvider;
-  m_pDownProvider = nullptr;
-  delete m_pRollProvider;
-  m_pRollProvider = nullptr;
+  m_pRolloverTextLayout.reset();
+  m_pDownTextLayout.reset();
+  m_pRollProvider.reset();
+  m_pDownProvider.reset();
   CXFA_FFField::UnloadWidget();
 }
 
@@ -125,36 +116,41 @@ float CXFA_FFPushButton::GetLineWidth() {
   }
   return 0;
 }
+
 FX_ARGB CXFA_FFPushButton::GetLineColor() {
   return 0xFF000000;
 }
+
 FX_ARGB CXFA_FFPushButton::GetFillColor() {
   return 0xFFFFFFFF;
 }
+
 void CXFA_FFPushButton::LoadHighlightCaption() {
   CXFA_Caption caption = m_pDataAcc->GetCaption();
-  if (caption && caption.GetPresence() != XFA_ATTRIBUTEENUM_Hidden) {
-    {
-      CFX_WideString wsRollover;
-      bool bRichText;
-      if (m_pDataAcc->GetButtonRollover(wsRollover, bRichText)) {
-        if (!m_pRollProvider) {
-          m_pRollProvider =
-              new CXFA_TextProvider(m_pDataAcc, XFA_TEXTPROVIDERTYPE_Rollover);
-        }
-        m_pRolloverTextLayout = new CXFA_TextLayout(m_pRollProvider);
-      }
-      CFX_WideString wsDown;
-      if (m_pDataAcc->GetButtonDown(wsDown, bRichText)) {
-        if (!m_pDownProvider) {
-          m_pDownProvider =
-              new CXFA_TextProvider(m_pDataAcc, XFA_TEXTPROVIDERTYPE_Down);
-        }
-        m_pDownTextLayout = new CXFA_TextLayout(m_pDownProvider);
-      }
+  if (!caption || caption.GetPresence() == XFA_ATTRIBUTEENUM_Hidden)
+    return;
+
+  bool bRichText;
+  CFX_WideString wsRollover;
+  if (m_pDataAcc->GetButtonRollover(wsRollover, bRichText)) {
+    if (!m_pRollProvider) {
+      m_pRollProvider = pdfium::MakeUnique<CXFA_TextProvider>(
+          m_pDataAcc, XFA_TEXTPROVIDERTYPE_Rollover);
+    }
+    m_pRolloverTextLayout =
+        pdfium::MakeUnique<CXFA_TextLayout>(m_pRollProvider.get());
+  }
+  CFX_WideString wsDown;
+  if (m_pDataAcc->GetButtonDown(wsDown, bRichText)) {
+    if (!m_pDownProvider) {
+      m_pDownProvider = pdfium::MakeUnique<CXFA_TextProvider>(
+          m_pDataAcc, XFA_TEXTPROVIDERTYPE_Down);
     }
+    m_pDownTextLayout =
+        pdfium::MakeUnique<CXFA_TextLayout>(m_pDownProvider.get());
   }
 }
+
 void CXFA_FFPushButton::LayoutHighlightCaption() {
   CFX_SizeF sz(m_rtCaption.width, m_rtCaption.height);
   LayoutCaption();
diff --git a/xfa/fxfa/app/xfa_ffpushbutton.h b/xfa/fxfa/app/xfa_ffpushbutton.h
index 70853e8942..7e6e9e57d5 100644
--- a/xfa/fxfa/app/xfa_ffpushbutton.h
+++ b/xfa/fxfa/app/xfa_ffpushbutton.h
@@ -7,6 +7,8 @@
 #ifndef XFA_FXFA_APP_XFA_FFPUSHBUTTON_H_
 #define XFA_FXFA_APP_XFA_FFPUSHBUTTON_H_
 
+#include <memory>
+
 #include "xfa/fxfa/app/xfa_fffield.h"
 
 #define XFA_FWL_PSBSTYLEEXT_HiliteNone (0L << 0)
@@ -42,10 +44,10 @@ class CXFA_FFPushButton : public CXFA_FFField {
   FX_ARGB GetLineColor();
   FX_ARGB GetFillColor();
 
-  CXFA_TextLayout* m_pRolloverTextLayout;
-  CXFA_TextLayout* m_pDownTextLayout;
-  CXFA_TextProvider* m_pDownProvider;
-  CXFA_TextProvider* m_pRollProvider;
+  std::unique_ptr<CXFA_TextLayout> m_pRolloverTextLayout;
+  std::unique_ptr<CXFA_TextLayout> m_pDownTextLayout;
+  std::unique_ptr<CXFA_TextProvider> m_pRollProvider;
+  std::unique_ptr<CXFA_TextProvider> m_pDownProvider;
   IFWL_WidgetDelegate* m_pOldDelegate;
 };
 
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