chrome/browser/ui/webui/media_router/media_cast_mode.cc

   1 // Copyright 2015 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 #include "chrome/browser/ui/webui/media_router/media_cast_mode.h"
   6
   7 #include "base/logging.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "chrome/grit/generated_resources.h"
  10 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
  11 #include "ui/base/l10n/l10n_util.h"
  12
  13 namespace media_router {
  14
  15 namespace {
  16
  17 std::string TruncateHostToRegisteredDomain(const std::string& host) {
  18   const std::string truncated =
  19       net::registry_controlled_domains::GetDomainAndRegistry(
  20           host,
  21           net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES);
  22   // The truncation will be empty in some scenarios (e.g. host is
  23   // simply an IP address). Fail gracefully.
  24   if (truncated.empty()) {
  25     return host;
  26   }
  27   return truncated;
  28 }
  29
  30 }  // namespace
  31
  32 std::string MediaCastModeToDescription(
  33     MediaCastMode mode, const std::string& host) {
  34   switch (mode) {
  35     case MediaCastMode::DEFAULT:
  36       return l10n_util::GetStringFUTF8(
  37           IDS_MEDIA_ROUTER_DEFAULT_CAST_MODE,
  38           base::UTF8ToUTF16(TruncateHostToRegisteredDomain(host)));
  39     case MediaCastMode::TAB_MIRROR:
  40       return l10n_util::GetStringUTF8(
  41           IDS_MEDIA_ROUTER_TAB_MIRROR_CAST_MODE);
  42     case MediaCastMode::DESKTOP_MIRROR:
  43       return l10n_util::GetStringUTF8(
  44           IDS_MEDIA_ROUTER_DESKTOP_MIRROR_CAST_MODE);
  45     default:
  46       NOTREACHED();
  47       return "";
  48   }
  49 }
  50
  51 bool IsValidCastModeNum(int cast_mode_num) {
  52   return cast_mode_num >= MediaCastMode::DEFAULT &&
  53          cast_mode_num < MediaCastMode::NUM_CAST_MODES;
  54 }
  55
  56 MediaCastMode GetPreferredCastMode(const CastModeSet& cast_modes) {
  57   if (cast_modes.empty()) {
  58     LOG(ERROR) << "Called with empty cast_modes!";
  59     return MediaCastMode::DEFAULT;
  60   }
  61   return *cast_modes.begin();
  62 }
  63
  64 }  // namespace media_router