Move ExtensionFunction to the extensions component.

chrome/browser/extensions/extension_function.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/browser/extensions/extension_function.h"
-
-#include "base/logging.h"
-#include "base/metrics/histogram.h"
-#include "chrome/browser/extensions/extension_function_dispatcher.h"
-#include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/renderer_host/chrome_render_message_filter.h"
-#include "chrome/common/extensions/extension_messages.h"
-#include "content/public/browser/notification_source.h"
-#include "content/public/browser/notification_types.h"
-#include "content/public/browser/render_view_host.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "extensions/common/extension_api.h"
-
-using content::BrowserThread;
-using content::RenderViewHost;
-using content::WebContents;
-using extensions::ExtensionAPI;
-using extensions::Feature;
-
-// static
-void ExtensionFunctionDeleteTraits::Destruct(const ExtensionFunction* x) {
-  x->Destruct();
-}
-
-// Helper class to track the lifetime of ExtensionFunction's RenderViewHost
-// pointer and NULL it out when it dies. It also allows us to filter IPC
-// messages coming from the RenderViewHost.
-class UIThreadExtensionFunction::RenderViewHostTracker
-    : public content::WebContentsObserver {
- public:
-  explicit RenderViewHostTracker(UIThreadExtensionFunction* function)
-      : content::WebContentsObserver(
-            WebContents::FromRenderViewHost(function->render_view_host())),
-        function_(function) {
-  }
-
- private:
-  // content::WebContentsObserver:
-  virtual void RenderViewDeleted(
-      content::RenderViewHost* render_view_host) OVERRIDE {
-    if (render_view_host != function_->render_view_host())
-      return;
-
-    function_->SetRenderViewHost(NULL);
-  }
-
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE {
-    return function_->OnMessageReceivedFromRenderView(message);
-  }
-
-  UIThreadExtensionFunction* function_;
-
-  DISALLOW_COPY_AND_ASSIGN(RenderViewHostTracker);
-};
-
-ExtensionFunction::ExtensionFunction()
-    : request_id_(-1),
-      profile_id_(NULL),
-      has_callback_(false),
-      include_incognito_(false),
-      user_gesture_(false),
-      bad_message_(false),
-      histogram_value_(extensions::functions::UNKNOWN) {}
-
-ExtensionFunction::~ExtensionFunction() {
-}
-
-UIThreadExtensionFunction* ExtensionFunction::AsUIThreadExtensionFunction() {
-  return NULL;
-}
-
-IOThreadExtensionFunction* ExtensionFunction::AsIOThreadExtensionFunction() {
-  return NULL;
-}
-
-bool ExtensionFunction::HasPermission() {
-  Feature::Availability availability =
-      ExtensionAPI::GetSharedInstance()->IsAvailable(
-          name_, extension_, Feature::BLESSED_EXTENSION_CONTEXT, source_url());
-  return availability.is_available();
-}
-
-void ExtensionFunction::OnQuotaExceeded(const std::string& violation_error) {
-  error_ = violation_error;
-  SendResponse(false);
-}
-
-void ExtensionFunction::SetArgs(const base::ListValue* args) {
-  DCHECK(!args_.get());  // Should only be called once.
-  args_.reset(args->DeepCopy());
-}
-
-void ExtensionFunction::SetResult(base::Value* result) {
-  results_.reset(new base::ListValue());
-  results_->Append(result);
-}
-
-const base::ListValue* ExtensionFunction::GetResultList() {
-  return results_.get();
-}
-
-const std::string ExtensionFunction::GetError() {
-  return error_;
-}
-
-void ExtensionFunction::SetError(const std::string& error) {
-  error_ = error;
-}
-
-void ExtensionFunction::Run() {
-  UMA_HISTOGRAM_ENUMERATION("Extensions.FunctionCalls", histogram_value(),
-                            extensions::functions::ENUM_BOUNDARY);
-
-  if (!RunImpl())
-    SendResponse(false);
-}
-
-bool ExtensionFunction::ShouldSkipQuotaLimiting() const {
-  return false;
-}
-
-bool ExtensionFunction::HasOptionalArgument(size_t index) {
-  Value* value;
-  return args_->Get(index, &value) && !value->IsType(Value::TYPE_NULL);
-}
-
-void ExtensionFunction::SendResponseImpl(bool success) {
-  DCHECK(!response_callback_.is_null());
-
-  ResponseType type = success ? SUCCEEDED : FAILED;
-  if (bad_message_) {
-    type = BAD_MESSAGE;
-    LOG(ERROR) << "Bad extension message " << name_;
-  }
-
-  // If results were never set, we send an empty argument list.
-  if (!results_)
-    results_.reset(new base::ListValue());
-
-  response_callback_.Run(type, *results_, GetError());
-}
-
-UIThreadExtensionFunction::UIThreadExtensionFunction()
-    : render_view_host_(NULL), context_(NULL), delegate_(NULL) {}
-
-UIThreadExtensionFunction::~UIThreadExtensionFunction() {
-  if (dispatcher() && render_view_host())
-    dispatcher()->OnExtensionFunctionCompleted(GetExtension());
-}
-
-UIThreadExtensionFunction*
-UIThreadExtensionFunction::AsUIThreadExtensionFunction() {
-  return this;
-}
-
-bool UIThreadExtensionFunction::OnMessageReceivedFromRenderView(
-    const IPC::Message& message) {
-  return false;
-}
-
-void UIThreadExtensionFunction::Destruct() const {
-  BrowserThread::DeleteOnUIThread::Destruct(this);
-}
-
-void UIThreadExtensionFunction::SetRenderViewHost(
-    RenderViewHost* render_view_host) {
-  render_view_host_ = render_view_host;
-  tracker_.reset(render_view_host ? new RenderViewHostTracker(this) : NULL);
-}
-
-content::WebContents* UIThreadExtensionFunction::GetAssociatedWebContents() {
-  content::WebContents* web_contents = NULL;
-  if (dispatcher())
-    web_contents = dispatcher()->delegate()->GetAssociatedWebContents();
-
-  return web_contents;
-}
-
-void UIThreadExtensionFunction::SendResponse(bool success) {
-  if (delegate_)
-    delegate_->OnSendResponse(this, success, bad_message_);
-  else
-    SendResponseImpl(success);
-}
-
-void UIThreadExtensionFunction::WriteToConsole(
-    content::ConsoleMessageLevel level,
-    const std::string& message) {
-  render_view_host_->Send(new ExtensionMsg_AddMessageToConsole(
-      render_view_host_->GetRoutingID(), level, message));
-}
-
-IOThreadExtensionFunction::IOThreadExtensionFunction()
-    : routing_id_(MSG_ROUTING_NONE) {
-}
-
-IOThreadExtensionFunction::~IOThreadExtensionFunction() {
-}
-
-IOThreadExtensionFunction*
-IOThreadExtensionFunction::AsIOThreadExtensionFunction() {
-  return this;
-}
-
-void IOThreadExtensionFunction::Destruct() const {
-  BrowserThread::DeleteOnIOThread::Destruct(this);
-}
-
-void IOThreadExtensionFunction::SendResponse(bool success) {
-  SendResponseImpl(success);
-}
-
-AsyncExtensionFunction::AsyncExtensionFunction() {
-}
-
-AsyncExtensionFunction::~AsyncExtensionFunction() {
-}
-
-SyncExtensionFunction::SyncExtensionFunction() {
-}
-
-SyncExtensionFunction::~SyncExtensionFunction() {
-}
-
-void SyncExtensionFunction::Run() {
-  SendResponse(RunImpl());
-}
-
-SyncIOThreadExtensionFunction::SyncIOThreadExtensionFunction() {
-}
-
-SyncIOThreadExtensionFunction::~SyncIOThreadExtensionFunction() {
-}
-
-void SyncIOThreadExtensionFunction::Run() {
-  SendResponse(RunImpl());
-}