| // 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 <memory> |
| |
| #include "base/memory/ref_counted.h" |
| #include "printing/printing_context.h" |
| |
| namespace base { |
| class Location; |
| class SequencedTaskRunner; |
| } |
| |
| namespace printing { |
| |
| class PrintJobWorker; |
| class PrintSettings; |
| |
| class PrintJobWorkerOwner |
| : public base::RefCountedThreadSafe<PrintJobWorkerOwner> { |
| public: |
| // Can only be called in single-threaded context. |
| 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 std::unique_ptr<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 tasks posted to this TaskRunner are sequenced |
| // with this call. |
| bool RunsTasksInCurrentSequence() const; |
| |
| // Posts the given task to be run. |
| bool PostTask(const base::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__ |