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// Copyright (c) 2009 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 CHROME_COMMON_APPCACHE_CHROME_APPCACHE_SERVICE_H_
#define CHROME_COMMON_APPCACHE_CHROME_APPCACHE_SERVICE_H_
#include "base/file_path.h"
#include "base/message_loop.h"
#include "base/ref_counted.h"
#include "base/task.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/common/chrome_constants.h"
#include "webkit/appcache/appcache_service.h"
// An AppCacheService subclass used by the chrome. There is an instance
// associated with each Profile. This derivation adds refcounting semantics
// since a profile has multiple URLRequestContexts which refer to the same
// object, and those URLRequestContexts are refcounted independently of the
// owning profile.
//
// All methods, including the dtor, are expected to be called on the IO thread
// except for the ctor and the init method which are expected to be called on
// the UI thread.
class ChromeAppCacheService
: public base::RefCountedThreadSafe<ChromeAppCacheService>,
public appcache::AppCacheService {
public:
explicit ChromeAppCacheService()
: was_initialized_with_io_thread_(false) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
}
void InitializeOnUIThread(const FilePath& data_directory,
URLRequestContext* request_context,
bool is_incognito) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
set_request_context(request_context);
// Some test cases run without an IO thread.
MessageLoop* io_thread = ChromeThread::GetMessageLoop(ChromeThread::IO);
if (io_thread) {
was_initialized_with_io_thread_ = true;
io_thread->PostTask(FROM_HERE,
NewRunnableMethod(this, &ChromeAppCacheService::InitializeOnIOThread,
data_directory, is_incognito));
}
}
private:
friend class base::RefCountedThreadSafe<ChromeAppCacheService>;
virtual ~ChromeAppCacheService() {
DCHECK(!was_initialized_with_io_thread_ ||
ChromeThread::CurrentlyOn(ChromeThread::IO));
}
void InitializeOnIOThread(const FilePath& data_directory,
bool is_incognito) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
Initialize(is_incognito ? FilePath()
: data_directory.Append(chrome::kAppCacheDirname));
}
bool was_initialized_with_io_thread_;
};
#endif // CHROME_COMMON_APPCACHE_CHROME_APPCACHE_SERVICE_H_
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