Move most of ChromeV8Context to a base ScriptContext

chrome/renderer/extensions/object_backed_native_handler.cc

-// Copyright (c) 2012 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.
-
-#include "chrome/renderer/extensions/object_backed_native_handler.h"
-
-#include "base/logging.h"
-#include "base/memory/linked_ptr.h"
-#include "chrome/renderer/extensions/chrome_v8_context.h"
-#include "chrome/renderer/extensions/console.h"
-#include "chrome/renderer/extensions/module_system.h"
-#include "v8/include/v8.h"
-
-namespace extensions {
-
-namespace {
-// Key for the base::Bound routed function.
-const char* kHandlerFunction = "handler_function";
-}  // namespace
-
-ObjectBackedNativeHandler::ObjectBackedNativeHandler(ChromeV8Context* context)
-    : router_data_(context->v8_context()->GetIsolate()),
-      context_(context),
-      object_template_(
-          v8::ObjectTemplate::New(context->v8_context()->GetIsolate())) {}
-
-ObjectBackedNativeHandler::~ObjectBackedNativeHandler() {
-  Invalidate();
-}
-
-v8::Handle<v8::Object> ObjectBackedNativeHandler::NewInstance() {
-  return object_template_.NewHandle(v8::Isolate::GetCurrent())->NewInstance();
-}
-
-// static
-void ObjectBackedNativeHandler::Router(
-    const v8::FunctionCallbackInfo<v8::Value>& args) {
-  v8::HandleScope handle_scope(args.GetIsolate());
-  v8::Handle<v8::Object> data = args.Data().As<v8::Object>();
-
-  v8::Handle<v8::Value> handler_function_value =
-      data->Get(v8::String::NewFromUtf8(args.GetIsolate(), kHandlerFunction));
-  // See comment in header file for why we do this.
-  if (handler_function_value.IsEmpty() ||
-      handler_function_value->IsUndefined()) {
-    console::Error(args.GetIsolate()->GetCallingContext(),
-                   "Extension view no longer exists");
-    return;
-  }
-  DCHECK(handler_function_value->IsExternal());
-  static_cast<HandlerFunction*>(
-      handler_function_value.As<v8::External>()->Value())->Run(args);
-}
-
-void ObjectBackedNativeHandler::RouteFunction(
-    const std::string& name,
-    const HandlerFunction& handler_function) {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::HandleScope handle_scope(isolate);
-  v8::Context::Scope context_scope(context_->v8_context());
-
-  v8::Persistent<v8::Object> data(isolate, v8::Object::New(isolate));
-  v8::Local<v8::Object> local_data = v8::Local<v8::Object>::New(isolate, data);
-  local_data->Set(
-      v8::String::NewFromUtf8(isolate, kHandlerFunction),
-      v8::External::New(isolate, new HandlerFunction(handler_function)));
-  v8::Handle<v8::FunctionTemplate> function_template =
-      v8::FunctionTemplate::New(isolate, Router, local_data);
-  object_template_.NewHandle(isolate)
-      ->Set(isolate, name.c_str(), function_template);
-  router_data_.Append(local_data);
-}
-
-v8::Isolate* ObjectBackedNativeHandler::GetIsolate() const {
-  return context_->isolate();
-}
-
-void ObjectBackedNativeHandler::Invalidate() {
-  if (!is_valid())
-    return;
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::HandleScope handle_scope(isolate);
-  v8::Context::Scope context_scope(context_->v8_context());
-
-  for (size_t i = 0; i < router_data_.Size(); i++) {
-    v8::Handle<v8::Object> data = router_data_.Get(i);
-    v8::Handle<v8::Value> handler_function_value =
-        data->Get(v8::String::NewFromUtf8(isolate, kHandlerFunction));
-    CHECK(!handler_function_value.IsEmpty());
-    delete static_cast<HandlerFunction*>(
-        handler_function_value.As<v8::External>()->Value());
-    data->Delete(v8::String::NewFromUtf8(isolate, kHandlerFunction));
-  }
-  router_data_.Clear();
-  object_template_.reset();
-  context_ = NULL;
-  NativeHandler::Invalidate();
-}
-
-}   // namespace extensions