Use UnownedPtr<> in cxfa_{ffwidgethandler,imagrenderer,loadercontext}.h

Change-Id: I25496c9792a99ca27d2ab84c267770ff941cf921
Reviewed-on: https://pdfium-review.googlesource.com/36912
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

6 files changed, 14 insertions, 12 deletions

diff --git a/xfa/fxfa/cxfa_ffwidgethandler.cpp b/xfa/fxfa/cxfa_ffwidgethandler.cpp
index a820db8083..eb9a4ca63a 100644
--- a/xfa/fxfa/cxfa_ffwidgethandler.cpp
+++ b/xfa/fxfa/cxfa_ffwidgethandler.cpp
@@ -234,11 +234,11 @@ int32_t CXFA_FFWidgetHandler::ProcessEvent(CXFA_Node* pNode,
 
   switch (pParam->m_eType) {
     case XFA_EVENT_Calculate:
-      return pNode->ProcessCalculate(m_pDocView);
+      return pNode->ProcessCalculate(m_pDocView.Get());
     case XFA_EVENT_Validate:
       if (m_pDocView->GetDoc()->GetDocEnvironment()->IsValidationsEnabled(
               m_pDocView->GetDoc())) {
-        return pNode->ProcessValidate(m_pDocView, 0);
+        return pNode->ProcessValidate(m_pDocView.Get(), 0);
       }
       return XFA_EVENTERROR_Disabled;
     case XFA_EVENT_InitCalculate: {
@@ -247,15 +247,14 @@ int32_t CXFA_FFWidgetHandler::ProcessEvent(CXFA_Node* pNode,
         return XFA_EVENTERROR_NotExist;
       if (pNode->IsUserInteractive())
         return XFA_EVENTERROR_Disabled;
-      return pNode->ExecuteScript(m_pDocView, calc->GetScriptIfExists(),
+      return pNode->ExecuteScript(m_pDocView.Get(), calc->GetScriptIfExists(),
                                   pParam);
     }
     default:
       break;
   }
-  int32_t iRet = pNode->ProcessEvent(m_pDocView,
-                                     gs_EventActivity[pParam->m_eType], pParam);
-  return iRet;
+  return pNode->ProcessEvent(m_pDocView.Get(),
+                             gs_EventActivity[pParam->m_eType], pParam);
 }
 
 CXFA_FFWidget* CXFA_FFWidgetHandler::CreateWidget(CXFA_FFWidget* hParent,
diff --git a/xfa/fxfa/cxfa_ffwidgethandler.h b/xfa/fxfa/cxfa_ffwidgethandler.h
index 975f3607e4..f2b6ae0d1c 100644
--- a/xfa/fxfa/cxfa_ffwidgethandler.h
+++ b/xfa/fxfa/cxfa_ffwidgethandler.h
@@ -9,6 +9,7 @@
 
 #include <vector>
 
+#include "core/fxcrt/unowned_ptr.h"
 #include "xfa/fxfa/cxfa_eventparam.h"
 #include "xfa/fxfa/fxfa.h"
 #include "xfa/fxfa/parser/cxfa_document.h"
@@ -123,7 +124,7 @@ class CXFA_FFWidgetHandler {
   CXFA_Document* GetObjFactory() const;
   CXFA_Document* GetXFADoc() const;
 
-  CXFA_FFDocView* m_pDocView;
+  UnownedPtr<CXFA_FFDocView> m_pDocView;
 };
 
 #endif  //  XFA_FXFA_CXFA_FFWIDGETHANDLER_H_
diff --git a/xfa/fxfa/cxfa_imagerenderer.cpp b/xfa/fxfa/cxfa_imagerenderer.cpp
index f6cb5e9317..f90ea64a93 100644
--- a/xfa/fxfa/cxfa_imagerenderer.cpp
+++ b/xfa/fxfa/cxfa_imagerenderer.cpp
@@ -149,7 +149,8 @@ void CXFA_ImageRenderer::CompositeDIBitmap(
   if (!pCloneConvert)
     return;
 
-  CXFA_ImageRenderer imageRender(m_pDevice, pCloneConvert, &m_ImageMatrix);
+  CXFA_ImageRenderer imageRender(m_pDevice.Get(), pCloneConvert,
+                                 &m_ImageMatrix);
   if (!imageRender.Start())
     return;
 
diff --git a/xfa/fxfa/cxfa_imagerenderer.h b/xfa/fxfa/cxfa_imagerenderer.h
index 8ed9ab0c75..236c3ccc5a 100644
--- a/xfa/fxfa/cxfa_imagerenderer.h
+++ b/xfa/fxfa/cxfa_imagerenderer.h
@@ -11,6 +11,7 @@
 
 #include "core/fxcrt/fx_coordinates.h"
 #include "core/fxcrt/retain_ptr.h"
+#include "core/fxcrt/unowned_ptr.h"
 #include "core/fxge/fx_dib.h"
 
 class CFX_RenderDevice;
@@ -34,7 +35,7 @@ class CXFA_ImageRenderer {
                          int left,
                          int top);
 
-  CFX_RenderDevice* m_pDevice;
+  UnownedPtr<CFX_RenderDevice> m_pDevice;
   int m_Status = 0;
   CFX_Matrix m_ImageMatrix;
   RetainPtr<CFX_DIBSource> m_pDIBSource;
diff --git a/xfa/fxfa/cxfa_loadercontext.h b/xfa/fxfa/cxfa_loadercontext.h
index 36ec95b7f3..ff7c6032a8 100644
--- a/xfa/fxfa/cxfa_loadercontext.h
+++ b/xfa/fxfa/cxfa_loadercontext.h
@@ -30,7 +30,7 @@ class CXFA_LoaderContext {
   int32_t m_iLines;
   int32_t m_iTotalLines;
   uint32_t m_dwFlags;
-  CFX_XMLNode* m_pXMLNode;
+  UnownedPtr<CFX_XMLNode> m_pXMLNode;
   UnownedPtr<CXFA_Node> m_pNode;
   RetainPtr<CFX_CSSComputedStyle> m_pParentStyle;
   std::vector<float> m_lineHeights;
diff --git a/xfa/fxfa/cxfa_textlayout.cpp b/xfa/fxfa/cxfa_textlayout.cpp
index eb7fab383a..32a1b393a6 100644
--- a/xfa/fxfa/cxfa_textlayout.cpp
+++ b/xfa/fxfa/cxfa_textlayout.cpp
@@ -459,11 +459,11 @@ bool CXFA_TextLayout::Layout(int32_t iBlock) {
       if (!pContainerNode)
         return true;
 
-      CFX_XMLNode* pXMLNode = m_pLoader->m_pXMLNode;
+      CFX_XMLNode* pXMLNode = m_pLoader->m_pXMLNode.Get();
       if (!pXMLNode)
         return true;
 
-      CFX_XMLNode* pSaveXMLNode = m_pLoader->m_pXMLNode;
+      CFX_XMLNode* pSaveXMLNode = pXMLNode;
       for (; pXMLNode; pXMLNode = pXMLNode->GetNextSibling()) {
         if (!LoadRichText(pXMLNode, szText.width, &fLinePos,
                           m_pLoader->m_pParentStyle, true, nullptr)) {