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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_PRINT_JOB_WORKER_OWNER_H__
#define CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_OWNER_H__
#include "base/memory/ref_counted.h"
#include "printing/printing_context.h"
namespace base {
class MessageLoop;
class SequencedTaskRunner;
}
namespace tracked_objects {
class Location;
}
namespace printing {
class PrintJobWorker;
class PrintSettings;
class PrintJobWorkerOwner
: public base::RefCountedThreadSafe<PrintJobWorkerOwner> {
public:
PrintJobWorkerOwner();
// Finishes the initialization began by PrintJobWorker::GetSettings().
// Creates a new PrintedDocument if necessary. Solely meant to be called by
// PrintJobWorker.
virtual void GetSettingsDone(const PrintSettings& new_settings,
PrintingContext::Result result) = 0;
// Detach the PrintJobWorker associated to this object.
virtual PrintJobWorker* DetachWorker(PrintJobWorkerOwner* new_owner) = 0;
// Access the current settings.
virtual const PrintSettings& settings() const = 0;
// Cookie uniquely identifying the PrintedDocument and/or loaded settings.
virtual int cookie() const = 0;
// Returns true if the current thread is a thread on which a task
// may be run, and false if no task will be run on the current
// thread.
bool RunsTasksOnCurrentThread() const;
// Posts the given task to be run.
bool PostTask(const tracked_objects::Location& from_here,
const base::Closure& task);
protected:
friend class base::RefCountedThreadSafe<PrintJobWorkerOwner>;
virtual ~PrintJobWorkerOwner();
// Task runner reference. Used to send notifications in the right
// thread.
scoped_refptr<base::SequencedTaskRunner> task_runner_;
};
} // namespace printing
#endif // CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_OWNER_H__
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