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// Copyright 2020 The Chromium Authors
// 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_CONTROLLER_H_
#define CHROME_BROWSER_PRINTING_PRINT_JOB_CONTROLLER_H_
#include <memory>
#include <optional>
#include <string>
#include "base/functional/callback_forward.h"
#include "base/memory/raw_ref.h"
#include "base/memory/scoped_refptr.h"
#include "chromeos/crosapi/mojom/local_printer.mojom.h"
namespace printing {
class MetafileSkia;
class PrintedDocument;
class PrintJob;
class PrintSettings;
struct PrintJobCreatedInfo {
const int32_t job_id;
const raw_ref<PrintedDocument> document;
};
// This class serves as an entry point to the printing pipeline. It sends print
// jobs to the printing system and waits for them to be acknowledged.
// Not to be confused with PrintJobManager -- these two are not part of the same
// printing pipeline.
class PrintJobController {
public:
class PendingJobStorage;
using PrintJobCreatedCallback =
base::OnceCallback<void(std::optional<PrintJobCreatedInfo>)>;
PrintJobController();
PrintJobController(const PrintJobController&) = delete;
PrintJobController& operator=(const PrintJobController&) = delete;
virtual ~PrintJobController();
// Creates a print job for the given `pdf` file with provided `settings` and
// `page_count`; `page_count` should be equal to the number of pages in the
// `pdf`.
// Invokes `callback` with job info once the job is acknowledged
// by the printing system.
// If the job fails to start for some reason, invokes `callback` with
// std::nullopt.
// `this` indirectly owns `callback`.
// Virtual for testing.
virtual void CreatePrintJob(std::unique_ptr<MetafileSkia> pdf,
std::unique_ptr<PrintSettings> settings,
uint32_t page_count,
crosapi::mojom::PrintJob::Source source,
const std::string& source_id,
PrintJobCreatedCallback callback);
protected:
// Starts watching the provided `print_job` and invokes `callback` with job
// info once the job is acknowledged by the printing system. If the job fails
// to start for some reason, invokes `callback` with std::nullopt.
void StartWatchingPrintJob(scoped_refptr<PrintJob> print_job,
PrintJobCreatedCallback callback);
private:
const std::unique_ptr<PendingJobStorage> pending_job_storage_;
};
} // namespace printing
#endif // CHROME_BROWSER_PRINTING_PRINT_JOB_CONTROLLER_H_
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