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// Copyright (c) 2011 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_BROWSER_USER_STYLE_SHEET_WATCHER_H_
#define CHROME_BROWSER_USER_STYLE_SHEET_WATCHER_H_
#pragma once
#include "base/file_path.h"
#include "base/files/file_path_watcher.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "content/browser/browser_thread.h"
#include "content/common/notification_observer.h"
#include "content/common/notification_registrar.h"
#include "googleurl/src/gurl.h"
class UserStyleSheetLoader;
// Watches the user style sheet file and triggers reloads on the file thread
// whenever the file changes.
class UserStyleSheetWatcher
: public base::RefCountedThreadSafe<UserStyleSheetWatcher,
BrowserThread::DeleteOnUIThread>,
public NotificationObserver {
public:
explicit UserStyleSheetWatcher(const FilePath& profile_path);
void Init();
GURL user_style_sheet() const;
// NotificationObserver interface
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
private:
friend struct BrowserThread::DeleteOnThread<BrowserThread::UI>;
friend class DeleteTask<UserStyleSheetWatcher>;
virtual ~UserStyleSheetWatcher();
// The directory containing User StyleSheets/Custom.css.
FilePath profile_path_;
// The loader object.
scoped_refptr<UserStyleSheetLoader> loader_;
// Watches for changes to the css file so we can reload the style sheet.
scoped_ptr<base::files::FilePathWatcher> file_watcher_;
NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(UserStyleSheetWatcher);
};
#endif // CHROME_BROWSER_USER_STYLE_SHEET_WATCHER_H_
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