Make ScriptController inherit LocalWindowProxyManager

third_party/WebKit/Source/bindings/core/v8/WindowProxyManager.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WindowProxyManager_h
 #define WindowProxyManager_h
 
 #include "bindings/core/v8/LocalWindowProxy.h"
 #include "bindings/core/v8/RemoteWindowProxy.h"
 #include "core/CoreExport.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/RemoteFrame.h"
 #include "platform/heap/Handle.h"
 #include <utility>
 #include <v8.h>
 
 namespace blink {
 
 class DOMWrapperWorld;
-class SecurityOrigin;
-class ScriptController;
 
-class WindowProxyManagerBase : public GarbageCollected<WindowProxyManagerBase> {
+class CORE_EXPORT WindowProxyManagerBase
+    : public GarbageCollected<WindowProxyManagerBase> {
  public:
   DECLARE_TRACE();
 
   v8::Isolate* isolate() const { return m_isolate; }
 
+  // Returns the global proxy for |world|'s WindowProxy. Note that it's possible
+  // to return a non-empty global proxy for a detached WindowProxy.
+  v8::Local<v8::Object> globalProxy(DOMWrapperWorld& world) {
+    return possiblyUninitializedWindowProxy(world)->globalProxy();
+  }
+
+  // Returns the v8::Context for |world|'s WindowProxy, initializing it first if
+  // needed. This may not be called on a detached frame.
+  v8::Local<v8::Context> context(DOMWrapperWorld& world) {
+    DCHECK(frame()->client());
+    auto context = windowProxy(world)->contextIfInitialized();
+    DCHECK(!context.IsEmpty());
+    return context;
+  }
+
   void clearForClose();
-  void CORE_EXPORT clearForNavigation();
+  void clearForNavigation();
 
-  void CORE_EXPORT
-  releaseGlobals(HashMap<DOMWrapperWorld*, v8::Local<v8::Object>>&);
-  void CORE_EXPORT
-  setGlobals(const HashMap<DOMWrapperWorld*, v8::Local<v8::Object>>&);
+  void releaseGlobals(HashMap<DOMWrapperWorld*, v8::Local<v8::Object>>&);
+  void setGlobals(const HashMap<DOMWrapperWorld*, v8::Local<v8::Object>>&);
 
  protected:
   using IsolatedWorldMap = HeapHashMap<int, Member<WindowProxy>>;
 
   explicit WindowProxyManagerBase(Frame&);
 
   Frame* frame() const { return m_frame; }
+  // Note that this may return an uninitialized WindowProxy.
   WindowProxy* mainWorldProxy() const { return m_windowProxy.get(); }
+  IsolatedWorldMap& isolatedWorlds() { return m_isolatedWorlds; }
+
+  // Returns the WindowProxy corresponding to |world|. The returned WindowProxy
+  // is guaranteed to be initialized.
   WindowProxy* windowProxy(DOMWrapperWorld&);
 
-  IsolatedWorldMap& isolatedWorlds() { return m_isolatedWorlds; }
+ private:
+  WindowProxy* possiblyUninitializedWindowProxy(DOMWrapperWorld&);
 
- private:
   v8::Isolate* const m_isolate;
   const Member<Frame> m_frame;
   const Member<WindowProxy> m_windowProxy;
   IsolatedWorldMap m_isolatedWorlds;
 };
 
 template <typename FrameType, typename ProxyType>
 class WindowProxyManagerImplHelper : public WindowProxyManagerBase {
- private:
+ protected:
   using Base = WindowProxyManagerBase;
 
- public:
-  FrameType* frame() const { return static_cast<FrameType*>(Base::frame()); }
+  explicit WindowProxyManagerImplHelper(Frame& frame)
+      : WindowProxyManagerBase(frame) {}
+
+  // Note that this may return an uninitialized WindowProxy.
   ProxyType* mainWorldProxy() const {
     return static_cast<ProxyType*>(Base::mainWorldProxy());
   }
+
+  // Returns the WindowProxy corresponding to |world|. The returned WindowProxy
+  // is guaranteed to be initialized.
   ProxyType* windowProxy(DOMWrapperWorld& world) {
     return static_cast<ProxyType*>(Base::windowProxy(world));
   }
 
- protected:
-  explicit WindowProxyManagerImplHelper(Frame& frame)
-      : WindowProxyManagerBase(frame) {}
+  FrameType* frame() const { return static_cast<FrameType*>(Base::frame()); }
 };
 
 class LocalWindowProxyManager
     : public WindowProxyManagerImplHelper<LocalFrame, LocalWindowProxy> {
- public:
-  static LocalWindowProxyManager* create(LocalFrame& frame) {
-    return new LocalWindowProxyManager(frame);
-  }
-
-  // Sets the given security origin to the main world's context.  Also updates
-  // the security origin of the context for each isolated world.
-  void updateSecurityOrigin(SecurityOrigin*);
-
- private:
-  // TODO(dcheng): Merge LocalWindowProxyManager and ScriptController?
-  friend class ScriptController;
-
+ protected:
   explicit LocalWindowProxyManager(LocalFrame& frame)
       : WindowProxyManagerImplHelper<LocalFrame, LocalWindowProxy>(frame) {}
 };
 
 class RemoteWindowProxyManager
     : public WindowProxyManagerImplHelper<RemoteFrame, RemoteWindowProxy> {
  public:
   static RemoteWindowProxyManager* create(RemoteFrame& frame) {
     return new RemoteWindowProxyManager(frame);
   }
 
  private:
   explicit RemoteWindowProxyManager(RemoteFrame& frame)
       : WindowProxyManagerImplHelper<RemoteFrame, RemoteWindowProxy>(frame) {}
 };
 
 }  // namespace blink
 
 #endif  // WindowProxyManager_h