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// Copyright 2015 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_UI_WEBUI_PRINT_PREVIEW_PRINTER_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINTER_HANDLER_H_
#include <string>
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string16.h"
namespace base {
class DictionaryValue;
class ListValue;
class RefCountedMemory;
}
namespace content {
class BrowserContext;
}
namespace gfx {
class Size;
}
// Wrapper around PrinterProviderAPI to be used by print preview.
// It makes request lifetime management easier, and hides details of more
// complex operations like printing from the print preview handler.
// TODO(tbarzic): Use the same interface for other printer types.
class PrinterHandler {
public:
using GetPrintersCallback =
base::Callback<void(const base::ListValue& printers, bool done)>;
using GetCapabilityCallback =
base::Callback<void(const std::string& printer_id,
const base::DictionaryValue& capability)>;
using PrintCallback =
base::Callback<void(bool success, const std::string& error)>;
using GetPrinterInfoCallback =
base::Callback<void(const base::DictionaryValue& printer_info)>;
// Creates an instance of an PrinterHandler for extension printers.
static scoped_ptr<PrinterHandler> CreateForExtensionPrinters(
content::BrowserContext* browser_context);
virtual ~PrinterHandler() {}
// Cancels all pending requests.
virtual void Reset() = 0;
// Starts getting available printers.
// |callback| should be called in the response to the request.
virtual void StartGetPrinters(const GetPrintersCallback& callback) = 0;
// Starts getting printing capability of the printer with the provided
// destination ID.
// |callback| should be called in the response to the request.
virtual void StartGetCapability(const std::string& destination_id,
const GetCapabilityCallback& callback) = 0;
// Starts granting access to the given provisional printer. The print handler
// will respond with more information about the printer including its non-
// provisional printer id.
// |callback| should be called in response to the request.
virtual void StartGrantPrinterAccess(
const std::string& printer_id,
const GetPrinterInfoCallback& callback) = 0;
// Starts a print request.
// |destination_id|: The printer to which print job should be sent.
// |capability|: Capability reported by the printer.
// |job_title|: The title used for print job.
// |ticket_json|: The print job ticket as JSON string.
// |page_size|: The document page size.
// |print_data|: The document bytes to print.
// |callback| should be called in the response to the request.
// TODO(tbarzic): Page size should be extracted from print data.
virtual void StartPrint(
const std::string& destination_id,
const std::string& capability,
const base::string16& job_title,
const std::string& ticket_json,
const gfx::Size& page_size,
const scoped_refptr<base::RefCountedMemory>& print_data,
const PrintCallback& callback) = 0;
};
#endif // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINTER_HANDLER_H_
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