Make CFX_Obeservable::Observer into a pointer-ish type;

This may be a better design because it avoids having a level
of indirection that the Observer required.

Review-Url: https://codereview.chromium.org/2326763002

5 files changed, 15 insertions, 17 deletions

diff --git a/fpdfsdk/javascript/Annot.cpp b/fpdfsdk/javascript/Annot.cpp
index ec77000449..8e6a775dcd 100644
--- a/fpdfsdk/javascript/Annot.cpp
+++ b/fpdfsdk/javascript/Annot.cpp
@@ -40,7 +40,7 @@ Annot::~Annot() {}
 FX_BOOL Annot::hidden(IJS_Context* cc,
                       CJS_PropValue& vp,
                       CFX_WideString& sError) {
-  CPDFSDK_BAAnnot* baAnnot = ToBAAnnot(m_pAnnot);
+  CPDFSDK_BAAnnot* baAnnot = ToBAAnnot(m_pAnnot.Get());
   if (!baAnnot)
     return FALSE;
 
@@ -72,7 +72,7 @@ FX_BOOL Annot::hidden(IJS_Context* cc,
 FX_BOOL Annot::name(IJS_Context* cc,
                     CJS_PropValue& vp,
                     CFX_WideString& sError) {
-  CPDFSDK_BAAnnot* baAnnot = ToBAAnnot(m_pAnnot);
+  CPDFSDK_BAAnnot* baAnnot = ToBAAnnot(m_pAnnot.Get());
   if (!baAnnot)
     return FALSE;
 
@@ -95,7 +95,7 @@ FX_BOOL Annot::type(IJS_Context* cc,
     return FALSE;
   }
 
-  CPDFSDK_BAAnnot* baAnnot = ToBAAnnot(m_pAnnot);
+  CPDFSDK_BAAnnot* baAnnot = ToBAAnnot(m_pAnnot.Get());
   if (!baAnnot)
     return FALSE;
 
@@ -104,6 +104,5 @@ FX_BOOL Annot::type(IJS_Context* cc,
 }
 
 void Annot::SetSDKAnnot(CPDFSDK_BAAnnot* annot) {
-  m_pAnnot = annot;
-  SetWatchedPtr(&m_pAnnot);
+  m_pAnnot.Reset(annot);
 }
diff --git a/fpdfsdk/javascript/Annot.h b/fpdfsdk/javascript/Annot.h
index c8b0afb556..21ad6d017a 100644
--- a/fpdfsdk/javascript/Annot.h
+++ b/fpdfsdk/javascript/Annot.h
@@ -12,7 +12,7 @@
 #include "fpdfsdk/include/cpdfsdk_baannot.h"
 #include "fpdfsdk/javascript/JS_Define.h"
 
-class Annot : public CJS_EmbedObj, public CPDFSDK_Annot::Observer {
+class Annot : public CJS_EmbedObj {
  public:
   explicit Annot(CJS_Object* pJSObject);
   ~Annot() override;
@@ -24,7 +24,7 @@ class Annot : public CJS_EmbedObj, public CPDFSDK_Annot::Observer {
   void SetSDKAnnot(CPDFSDK_BAAnnot* annot);
 
  private:
-  CPDFSDK_Annot* m_pAnnot = nullptr;
+  CPDFSDK_Annot::ObservedPtr m_pAnnot;
 };
 
 class CJS_Annot : public CJS_Object {
diff --git a/fpdfsdk/javascript/Field.cpp b/fpdfsdk/javascript/Field.cpp
index 9ecdec6936..85a43d6cb6 100644
--- a/fpdfsdk/javascript/Field.cpp
+++ b/fpdfsdk/javascript/Field.cpp
@@ -270,12 +270,12 @@ void Field::UpdateFormField(CPDFSDK_Document* pDocument,
     if (nFieldType == FIELDTYPE_COMBOBOX || nFieldType == FIELDTYPE_TEXTFIELD) {
       for (CPDFSDK_Annot* pAnnot : widgets) {
         FX_BOOL bFormatted = FALSE;
-        CPDFSDK_Annot::Observer observer(&pAnnot);
+        CPDFSDK_Annot::ObservedPtr pObserved(pAnnot);
         CFX_WideString sValue =
-            static_cast<CPDFSDK_Widget*>(pAnnot)->OnFormat(bFormatted);
-        if (pAnnot) {
-          static_cast<CPDFSDK_Widget*>(pAnnot)->ResetAppearance(
-              bFormatted ? &sValue : nullptr, FALSE);
+            static_cast<CPDFSDK_Widget*>(pObserved.Get())->OnFormat(bFormatted);
+        if (pObserved) {
+          static_cast<CPDFSDK_Widget*>(pObserved.Get())
+              ->ResetAppearance(bFormatted ? &sValue : nullptr, FALSE);
         }
       }
     } else {
diff --git a/fpdfsdk/javascript/app.cpp b/fpdfsdk/javascript/app.cpp
index d7086d211e..1e3ea2f04a 100644
--- a/fpdfsdk/javascript/app.cpp
+++ b/fpdfsdk/javascript/app.cpp
@@ -21,7 +21,7 @@
 #include "fpdfsdk/javascript/resource.h"
 #include "third_party/base/stl_util.h"
 
-class GlobalTimer : public CJS_Runtime::Observer {
+class GlobalTimer {
  public:
   GlobalTimer(app* pObj,
               CPDFDoc_Environment* pApp,
@@ -38,7 +38,7 @@ class GlobalTimer : public CJS_Runtime::Observer {
   bool IsOneShot() const { return m_nType == 1; }
   uint32_t GetTimeOut() const { return m_dwTimeOut; }
   int GetTimerID() const { return m_nTimerID; }
-  CJS_Runtime* GetRuntime() const { return m_pRuntime; }
+  CJS_Runtime* GetRuntime() const { return m_pRuntime.Get(); }
   CFX_WideString GetJScript() const { return m_swJScript; }
 
  private:
@@ -53,7 +53,7 @@ class GlobalTimer : public CJS_Runtime::Observer {
   const int m_nType;  // 0:Interval; 1:TimeOut
   const uint32_t m_dwTimeOut;
   const CFX_WideString m_swJScript;
-  CJS_Runtime* m_pRuntime;
+  CJS_Runtime::ObservedPtr m_pRuntime;
   CPDFDoc_Environment* const m_pApp;
 };
 
@@ -75,7 +75,6 @@ GlobalTimer::GlobalTimer(app* pObj,
   CFX_SystemHandler* pHandler = m_pApp->GetSysHandler();
   m_nTimerID = pHandler->SetTimer(dwElapse, Trigger);
   (*GetGlobalTimerMap())[m_nTimerID] = this;
-  SetWatchedPtr(&m_pRuntime);
 }
 
 GlobalTimer::~GlobalTimer() {
diff --git a/fpdfsdk/javascript/cjs_runtime.cpp b/fpdfsdk/javascript/cjs_runtime.cpp
index 67d45d5e4a..bfed82efe1 100644
--- a/fpdfsdk/javascript/cjs_runtime.cpp
+++ b/fpdfsdk/javascript/cjs_runtime.cpp
@@ -124,7 +124,7 @@ CJS_Runtime::CJS_Runtime(CPDFDoc_Environment* pApp)
 }
 
 CJS_Runtime::~CJS_Runtime() {
-  NotifyObservers();
+  NotifyObservedPtrs();
   ReleaseEngine();
   if (m_isolateManaged) {
     GetIsolate()->Dispose();