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// 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.
#ifndef CONTENT_BROWSER_LOADER_RESOURCE_MESSAGE_FILTER_H_
#define CONTENT_BROWSER_LOADER_RESOURCE_MESSAGE_FILTER_H_
#include "base/memory/scoped_ptr.h"
#include "content/common/content_export.h"
#include "content/public/browser/browser_message_filter.h"
#include "webkit/common/resource_type.h"
namespace fileapi {
class FileSystemContext;
} // namespace fileapi
namespace net {
class URLRequestContext;
} // namespace net
namespace content {
class ChromeAppCacheService;
class ChromeBlobStorageContext;
class ResourceContext;
// This class filters out incoming IPC messages for network requests and
// processes them on the IPC thread. As a result, network requests are not
// delayed by costly UI processing that may be occuring on the main thread of
// the browser. It also means that any hangs in starting a network request
// will not interfere with browser UI.
class CONTENT_EXPORT ResourceMessageFilter : public BrowserMessageFilter {
public:
// Allows selecting the net::URLRequestContext used to service requests.
class URLRequestContextSelector {
public:
URLRequestContextSelector() {}
virtual ~URLRequestContextSelector() {}
virtual net::URLRequestContext* GetRequestContext(
ResourceType::Type request_type) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(URLRequestContextSelector);
};
ResourceMessageFilter(
int child_id,
int process_type,
ResourceContext* resource_context,
ChromeAppCacheService* appcache_service,
ChromeBlobStorageContext* blob_storage_context,
fileapi::FileSystemContext* file_system_context,
URLRequestContextSelector* url_request_context_selector);
// BrowserMessageFilter implementation.
virtual void OnChannelClosing() OVERRIDE;
virtual bool OnMessageReceived(const IPC::Message& message,
bool* message_was_ok) OVERRIDE;
ResourceContext* resource_context() const {
return resource_context_;
}
ChromeAppCacheService* appcache_service() const {
return appcache_service_.get();
}
ChromeBlobStorageContext* blob_storage_context() const {
return blob_storage_context_.get();
}
fileapi::FileSystemContext* file_system_context() const {
return file_system_context_.get();
}
// Returns the net::URLRequestContext for the given request.
net::URLRequestContext* GetURLRequestContext(
ResourceType::Type request_type);
int child_id() const { return child_id_; }
int process_type() const { return process_type_; }
protected:
// Protected destructor so that we can be overriden in tests.
virtual ~ResourceMessageFilter();
private:
// The ID of the child process.
int child_id_;
int process_type_;
// Owned by ProfileIOData* which is guaranteed to outlive us.
ResourceContext* resource_context_;
scoped_refptr<ChromeAppCacheService> appcache_service_;
scoped_refptr<ChromeBlobStorageContext> blob_storage_context_;
scoped_refptr<fileapi::FileSystemContext> file_system_context_;
const scoped_ptr<URLRequestContextSelector> url_request_context_selector_;
DISALLOW_IMPLICIT_CONSTRUCTORS(ResourceMessageFilter);
};
} // namespace content
#endif // CONTENT_BROWSER_LOADER_RESOURCE_MESSAGE_FILTER_H_
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