chrome/browser/extensions/convert_web_app.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_EXTENSIONS_CONVERT_WEB_APP_H_
   6 #define CHROME_BROWSER_EXTENSIONS_CONVERT_WEB_APP_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/ref_counted.h"
  11
  12 namespace base {
  13 class FilePath;
  14 class Time;
  15 }
  16
  17 struct WebApplicationInfo;
  18
  19 namespace extensions {
  20 class Extension;
  21
  22 // Generates a version number for an extension from a time. The goal is to make
  23 // use of the version number to communicate the date in a human readable form,
  24 // while maintaining high enough resolution to change each time an app is
  25 // reinstalled. The version that is returned has the format:
  26 //
  27 // <year>.<month>.<day>.<fraction>
  28 //
  29 // fraction is represented as a number between 0 and 2^16-1. Each unit is
  30 // ~1.32 seconds.
  31 std::string ConvertTimeToExtensionVersion(const base::Time& time);
  32
  33 // Wraps the specified web app in an extension. The extension is created
  34 // unpacked in the system temp dir. Returns a valid extension that the caller
  35 // should take ownership on success, or NULL and |error| on failure.
  36 //
  37 // NOTE: This function does file IO and should not be called on the UI thread.
  38 // NOTE: The caller takes ownership of the directory at extension->path() on the
  39 // returned object.
  40 scoped_refptr<Extension> ConvertWebAppToExtension(
  41     const WebApplicationInfo& web_app_info,
  42     const base::Time& create_time,
  43     const base::FilePath& extensions_dir);
  44
  45 }  // namespace extensions
  46
  47 #endif  // CHROME_BROWSER_EXTENSIONS_CONVERT_WEB_APP_H_