chrome/browser/ui/webui/print_preview/print_preview_utils.h

// Copyright 2016 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_PRINT_PREVIEW_UTILS_H_
#define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_UTILS_H_

#include <memory>
#include <string>
#include <utility>

#include "base/values.h"
#include "chrome/browser/ui/webui/print_preview/printer_handler.h"
#include "printing/backend/print_backend.h"

namespace content {
class WebContents;
}

namespace printing {

// Printer capability setting keys.
extern const char kOptionKey[];
extern const char kTypeKey[];
extern const char kSelectCapKey[];
extern const char kSelectString[];
extern const char kTypeKey[];
extern const char kVendorCapabilityKey[];

// Converts |printer_list| to a base::ListValue form, runs |callback| with the
// converted list as the argument if it is not empty, and runs |done_callback|.
void ConvertPrinterListForCallback(
    PrinterHandler::AddedPrintersCallback callback,
    PrinterHandler::GetPrintersDoneCallback done_callback,
    const PrinterList& printer_list);

// Returns a sanitized version of |cdd| to prevent possible JS
// errors in Print Preview. Will remove null items from lists or options lists
// and remove any lists/options that are empty or only contain null values.
base::Value ValidateCddForPrintPreview(base::Value cdd);

// Starts a local print of |print_data| with print settings dictionary
// |job_settings|. Runs |callback| on failure or success.
void StartLocalPrint(base::Value job_settings,
                     scoped_refptr<base::RefCountedMemory> print_data,
                     content::WebContents* preview_web_contents,
                     PrinterHandler::PrintCallback callback);

// Parses print job settings. Returns |true| on success.
// This is used by extension and privet printers.
bool ParseSettings(const base::Value& settings,
                   std::string* out_destination_id,
                   std::string* out_capabilities,
                   gfx::Size* out_page_size,
                   base::Value* out_ticket);

}  // namespace printing

#endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_UTILS_H_