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// 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_BROWSER_RENDERER_STARTUP_HELPER_H_
#define EXTENSIONS_BROWSER_RENDERER_STARTUP_HELPER_H_
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/singleton.h"
#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
#include "components/keyed_service/core/keyed_service.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
namespace content {
class BrowserContext;
class RenderProcessHost;
}
namespace extensions {
// Informs renderers about extensions-related data (loaded extensions, available
// functions, etc.) when they start. Sends this information to both extension
// and non-extension renderers, as the non-extension renderers may have content
// scripts. Lives on the UI thread. Shared between incognito and non-incognito
// browser contexts.
class RendererStartupHelper : public KeyedService,
public content::NotificationObserver {
public:
// This class sends messages to all renderers started for |browser_context|.
explicit RendererStartupHelper(content::BrowserContext* browser_context);
~RendererStartupHelper() override;
// content::NotificationObserver overrides:
void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) override;
private:
content::BrowserContext* browser_context_; // Not owned.
content::NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(RendererStartupHelper);
};
// Factory for RendererStartupHelpers. Declared here because this header is
// rarely included and it's probably cheaper to put it here than to make the
// compiler generate another object file.
class RendererStartupHelperFactory : public BrowserContextKeyedServiceFactory {
public:
static RendererStartupHelper* GetForBrowserContext(
content::BrowserContext* context);
static RendererStartupHelperFactory* GetInstance();
private:
friend struct base::DefaultSingletonTraits<RendererStartupHelperFactory>;
RendererStartupHelperFactory();
~RendererStartupHelperFactory() override;
// BrowserContextKeyedServiceFactory implementation:
KeyedService* BuildServiceInstanceFor(
content::BrowserContext* profile) const override;
content::BrowserContext* GetBrowserContextToUse(
content::BrowserContext* context) const override;
bool ServiceIsCreatedWithBrowserContext() const override;
DISALLOW_COPY_AND_ASSIGN(RendererStartupHelperFactory);
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_RENDERER_STARTUP_HELPER_H_
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