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// Copyright (c) 2012 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 PRINTING_BACKEND_PRINT_BACKEND_H_
#define PRINTING_BACKEND_PRINT_BACKEND_H_
#include <map>
#include <string>
#include <vector>
#include "base/memory/ref_counted.h"
#include "base/strings/string16.h"
#include "printing/print_job_constants.h"
#include "printing/printing_export.h"
namespace base {
class DictionaryValue;
}
// This is the interface for platform-specific code for a print backend
namespace printing {
struct PRINTING_EXPORT PrinterBasicInfo {
PrinterBasicInfo();
~PrinterBasicInfo();
std::string printer_name;
std::string printer_description;
int printer_status;
int is_default;
std::map<std::string, std::string> options;
};
typedef std::vector<PrinterBasicInfo> PrinterList;
struct PRINTING_EXPORT PrinterSemanticCapsAndDefaults {
PrinterSemanticCapsAndDefaults();
~PrinterSemanticCapsAndDefaults();
// Capabilities.
bool color_changeable;
bool duplex_capable;
// Current defaults.
bool color_default;
DuplexMode duplex_default;
};
struct PRINTING_EXPORT PrinterCapsAndDefaults {
PrinterCapsAndDefaults();
~PrinterCapsAndDefaults();
std::string printer_capabilities;
std::string caps_mime_type;
std::string printer_defaults;
std::string defaults_mime_type;
};
// PrintBackend class will provide interface for different print backends
// (Windows, CUPS) to implement. User will call CreateInstance() to
// obtain available print backend.
// Please note, that PrintBackend is not platform specific, but rather
// print system specific. For example, CUPS is available on both Linux and Mac,
// but not available on ChromeOS, etc. This design allows us to add more
// functionality on some platforms, while reusing core (CUPS) functions.
class PRINTING_EXPORT PrintBackend
: public base::RefCountedThreadSafe<PrintBackend> {
public:
// Enumerates the list of installed local and network printers.
virtual bool EnumeratePrinters(PrinterList* printer_list) = 0;
// Get the default printer name. Empty string if no default printer.
virtual std::string GetDefaultPrinterName() = 0;
// Gets the semantic capabilities and defaults for a specific printer.
// This is usually a lighter implementation than GetPrinterCapsAndDefaults().
// NOTE: on some old platforms (WinXP without XPS pack)
// GetPrinterCapsAndDefaults() will fail, while this function will succeed.
virtual bool GetPrinterSemanticCapsAndDefaults(
const std::string& printer_name,
PrinterSemanticCapsAndDefaults* printer_info) = 0;
// Gets the capabilities and defaults for a specific printer.
virtual bool GetPrinterCapsAndDefaults(
const std::string& printer_name,
PrinterCapsAndDefaults* printer_info) = 0;
// Gets the information about driver for a specific printer.
virtual std::string GetPrinterDriverInfo(
const std::string& printer_name) = 0;
// Returns true if printer_name points to a valid printer.
virtual bool IsValidPrinter(const std::string& printer_name) = 0;
// Simplify title to resolve issue with some drivers.
static string16 SimplifyDocumentTitle(const string16& title);
// Allocate a print backend. If |print_backend_settings| is NULL, default
// settings will be used.
// Return NULL if no print backend available.
static scoped_refptr<PrintBackend> CreateInstance(
const base::DictionaryValue* print_backend_settings);
protected:
friend class base::RefCountedThreadSafe<PrintBackend>;
virtual ~PrintBackend();
};
} // namespace printing
#endif // PRINTING_BACKEND_PRINT_BACKEND_H_
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