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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_PRINTING_BACKGROUND_PRINTING_MANAGER_H_
#define CHROME_BROWSER_PRINTING_BACKGROUND_PRINTING_MANAGER_H_
#pragma once
#include <set>
#include "base/compiler_specific.h"
#include "base/threading/non_thread_safe.h"
#include "content/common/notification_observer.h"
#include "content/common/notification_registrar.h"
class TabContentsWrapper;
namespace printing {
// Manages hidden tabs that prints documents in the background.
// The hidden tabs are no longer part of any Browser / TabStripModel.
// They get deleted when the tab finishes printing.
class BackgroundPrintingManager
: public base::NonThreadSafe,
public NotificationObserver {
public:
BackgroundPrintingManager();
virtual ~BackgroundPrintingManager();
// Takes ownership of |content| and deletes it when |content| finishes
// printing. This removes the TabContentsWrapper from its TabStrip and
// hides it from the user.
void OwnTabContents(TabContentsWrapper* content);
// Let others iterate over the list of background printing tabs.
std::set<TabContentsWrapper*>::const_iterator begin();
std::set<TabContentsWrapper*>::const_iterator end();
// Returns true if |printing_contents_| contains |entry|.
bool HasTabContents(TabContentsWrapper* entry);
// NotificationObserver overrides:
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) OVERRIDE;
private:
// The set of tabs managed by BackgroundPrintingManager.
std::set<TabContentsWrapper*> printing_contents_;
NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(BackgroundPrintingManager);
};
} // namespace printing
#endif // CHROME_BROWSER_PRINTING_BACKGROUND_PRINTING_MANAGER_H_
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