extensions/browser/renderer_startup_helper.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "extensions/browser/renderer_startup_helper.h"
   6
   7 #include "base/values.h"
   8 #include "components/keyed_service/content/browser_context_dependency_manager.h"
   9 #include "content/public/browser/notification_service.h"
  10 #include "content/public/browser/notification_types.h"
  11 #include "content/public/browser/render_process_host.h"
  12 #include "extensions/browser/extension_function_dispatcher.h"
  13 #include "extensions/browser/extension_registry.h"
  14 #include "extensions/browser/extensions_browser_client.h"
  15 #include "extensions/common/extension_messages.h"
  16 #include "extensions/common/extension_set.h"
  17 #include "extensions/common/extensions_client.h"
  18 #include "ui/base/webui/web_ui_util.h"
  19
  20 using content::BrowserContext;
  21
  22 namespace extensions {
  23
  24 RendererStartupHelper::RendererStartupHelper(BrowserContext* browser_context)
  25     : browser_context_(browser_context) {
  26   DCHECK(browser_context);
  27   registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_CREATED,
  28                  content::NotificationService::AllBrowserContextsAndSources());
  29 }
  30
  31 RendererStartupHelper::~RendererStartupHelper() {}
  32
  33 void RendererStartupHelper::Observe(
  34     int type,
  35     const content::NotificationSource& source,
  36     const content::NotificationDetails& details) {
  37   switch (type) {
  38     case content::NOTIFICATION_RENDERER_PROCESS_CREATED: {
  39       content::RenderProcessHost* process =
  40           content::Source<content::RenderProcessHost>(source).ptr();
  41       if (!ExtensionsBrowserClient::Get()->IsSameContext(
  42                browser_context_, process->GetBrowserContext()))
  43         break;
  44
  45       // Platform apps need to know the system font.
  46       // TODO(dbeam): this is not the system font in all cases.
  47       process->Send(new ExtensionMsg_SetSystemFont(webui::GetFontFamily(),
  48                                                    webui::GetFontSize()));
  49
  50       // Valid extension function names, used to setup bindings in renderer.
  51       std::vector<std::string> function_names;
  52       ExtensionFunctionDispatcher::GetAllFunctionNames(&function_names);
  53       process->Send(new ExtensionMsg_SetFunctionNames(function_names));
  54
  55       // Scripting whitelist. This is modified by tests and must be communicated
  56       // to renderers.
  57       process->Send(new ExtensionMsg_SetScriptingWhitelist(
  58           extensions::ExtensionsClient::Get()->GetScriptingWhitelist()));
  59
  60       // Loaded extensions.
  61       std::vector<ExtensionMsg_Loaded_Params> loaded_extensions;
  62       const ExtensionSet& extensions =
  63           ExtensionRegistry::Get(browser_context_)->enabled_extensions();
  64       for (ExtensionSet::const_iterator iter = extensions.begin();
  65            iter != extensions.end(); ++iter) {
  66         // Renderers don't need to know about themes.
  67         if (!(*iter)->is_theme()) {
  68           // Don't need to include tab permissions for new tabs.
  69           loaded_extensions.push_back(ExtensionMsg_Loaded_Params(
  70               iter->get(), false /* no tab permissions */));
  71         }
  72       }
  73       process->Send(new ExtensionMsg_Loaded(loaded_extensions));
  74       break;
  75     }
  76     default:
  77       NOTREACHED();
  78       break;
  79   }
  80 }
  81
  82 //////////////////////////////////////////////////////////////////////////////
  83
  84 // static
  85 RendererStartupHelper* RendererStartupHelperFactory::GetForBrowserContext(
  86     BrowserContext* context) {
  87   return static_cast<RendererStartupHelper*>(
  88       GetInstance()->GetServiceForBrowserContext(context, true));
  89 }
  90
  91 // static
  92 RendererStartupHelperFactory* RendererStartupHelperFactory::GetInstance() {
  93   return Singleton<RendererStartupHelperFactory>::get();
  94 }
  95
  96 RendererStartupHelperFactory::RendererStartupHelperFactory()
  97     : BrowserContextKeyedServiceFactory(
  98           "RendererStartupHelper",
  99           BrowserContextDependencyManager::GetInstance()) {
 100   // No dependencies on other services.
 101 }
 102
 103 RendererStartupHelperFactory::~RendererStartupHelperFactory() {}
 104
 105 KeyedService* RendererStartupHelperFactory::BuildServiceInstanceFor(
 106     content::BrowserContext* context) const {
 107   return new RendererStartupHelper(context);
 108 }
 109
 110 BrowserContext* RendererStartupHelperFactory::GetBrowserContextToUse(
 111     BrowserContext* context) const {
 112   // Redirected in incognito.
 113   return ExtensionsBrowserClient::Get()->GetOriginalContext(context);
 114 }
 115
 116 bool RendererStartupHelperFactory::ServiceIsCreatedWithBrowserContext() const {
 117   return true;
 118 }
 119
 120 }  // namespace extensions