Extensions: suspend extension's scripts when V8 is paused

extensions/renderer/script_injection.h

 // Copyright 2014 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 EXTENSIONS_RENDERER_SCRIPT_INJECTION_H_
 #define EXTENSIONS_RENDERER_SCRIPT_INJECTION_H_
 
+#include <map>
+
 #include "base/basictypes.h"
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
 #include "extensions/common/user_script.h"
 #include "extensions/renderer/script_injector.h"
+#include "extensions/renderer/scripts_run_info.h"
+#include "v8/include/v8.h"
 
 namespace blink {
 class WebLocalFrame;
+class WebScriptExecutionCallback;
+template<typename T> class WebVector;
+}
+
+namespace v8 {
+class Value;
+template <class T> class Local;
 }
 
 namespace extensions {
 class Extension;
+class ScriptInjectionManager;
 struct ScriptsRunInfo;
 
 // A script wrapper which is aware of whether or not it is allowed to execute,
 // and contains the implementation to do so.
 class ScriptInjection {
  public:
   // Return the id of the extension associated with the given world.
   static std::string GetExtensionIdForIsolatedWorld(int world_id);
 
   // Remove the isolated world associated with the given extension.
   static void RemoveIsolatedWorld(const std::string& extension_id);
 
   ScriptInjection(scoped_ptr<ScriptInjector> injector,
                   blink::WebLocalFrame* web_frame,
                   const std::string& extension_id,
                   UserScript::RunLocation run_location,
                   int tab_id);
   ~ScriptInjection();
 
   // Try to inject the script at the |current_location|. This returns true if
   // the script has either injected or will never inject (i.e., if the object
   // is done), and false if injection is delayed (either for permission purposes
   // or because |current_location| is not the designated |run_location_|).
   // NOTE: |extension| may be NULL, if the extension is removed!
   bool TryToInject(UserScript::RunLocation current_location,
-                   const Extension* extension,
-                   ScriptsRunInfo* scripts_run_info);
+                   const Extension* extension);
 
   // Called when permission for the given injection has been granted.
   // Returns true if the injection ran.
-  bool OnPermissionGranted(const Extension* extension,
-                           ScriptsRunInfo* scripts_run_info);
+  bool OnPermissionGranted(const Extension* extension);
+
+  // Called when JS injection for the given frame has been completed.
+  void OnJSInjectionCompleted(blink::WebLocalFrame* frame,
+                              const blink::WebVector<v8::Local<v8::Value> >&);
 
   // Accessors.
   blink::WebLocalFrame* web_frame() const { return web_frame_; }
   const std::string& extension_id() const { return extension_id_; }
   int64 request_id() const { return request_id_; }
+  bool is_complete() const { return complete_; }
+  UserScript::RunLocation run_location() const { return run_location_; }
+
+  void SetScriptInjectionManager(ScriptInjectionManager* manager);
 
  private:
   // Send a message to the browser requesting permission to execute.
   void RequestPermission();
 
-  // Injects the script, optionally populating |scripts_run_info|.
-  void Inject(const Extension* extension, ScriptsRunInfo* scripts_run_info);
+  // Injects the script.
+  void Inject(const Extension* extension);
 
   // Inject any JS scripts into the |frame|, optionally populating
   // |execution_results|.
   void InjectJs(const Extension* extension,
-                blink::WebLocalFrame* frame,
-                base::ListValue* execution_results);
+                blink::WebLocalFrame* frame);
+
+  // If all injection are sended to frame and results received,
+  // OnInjectionComplete will be called on injector
+  void TryToFinish();
 
   // Inject any CSS source into the |frame|.
   void InjectCss(blink::WebLocalFrame* frame);
 
   // Notify that we will not inject, and mark it as acknowledged.
   void NotifyWillNotInject(ScriptInjector::InjectFailureReason reason);
 
   // The injector for this injection.
   scoped_ptr<ScriptInjector> injector_;
 
@@ skipping 10 matching lines @@
   int tab_id_;
 
   // This injection's request id. This will be -1 unless the injection is
   // currently waiting on permission.
   int64 request_id_;
 
   // Whether or not the injection is complete, either via injecting the script
   // or because it will never complete.
   bool complete_;
 
+  // A mapping of WebLocalFrame* to an index of result in results array
+  std::map<blink::WebLocalFrame*, size_t> frame_result_index_;
+
+  // Results storage
+  scoped_ptr<base::ListValue> execution_results_;
+
+  // Flag is true when all injections for each frame started
+  bool all_injection_started_;
+
+  // Pending execution callbacks
+  ScopedVector<blink::WebScriptExecutionCallback> callbacks_;
+
+  // Injection run info
+  scoped_ptr<ScriptsRunInfo> scripts_run_info_;
+
+  // If not null ScriptInjectionManager::OnInjectionFinished will be called
+  // after injection finished.
+  ScriptInjectionManager* script_injection_manager_;
+
   DISALLOW_COPY_AND_ASSIGN(ScriptInjection);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_SCRIPT_INJECTION_H_