src/chrome/browser/ui/webui/chromeos/choose_mobile_network_ui.cc

   1 // Copyright (c) 2012 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/chromeos/choose_mobile_network_ui.h"
   6
   7 #include <set>
   8 #include <string>
   9
  10 #include "base/bind.h"
  11 #include "base/bind_helpers.h"
  12 #include "base/location.h"
  13 #include "base/logging.h"
  14 #include "base/strings/string_number_conversions.h"
  15 #include "base/strings/string_piece.h"
  16 #include "base/values.h"
  17 #include "chrome/browser/profiles/profile.h"
  18 #include "chrome/common/url_constants.h"
  19 #include "chrome/grit/generated_resources.h"
  20 #include "chromeos/network/device_state.h"
  21 #include "chromeos/network/network_device_handler.h"
  22 #include "chromeos/network/network_event_log.h"
  23 #include "chromeos/network/network_state_handler.h"
  24 #include "chromeos/network/network_state_handler_observer.h"
  25 #include "content/public/browser/web_contents.h"
  26 #include "content/public/browser/web_ui.h"
  27 #include "content/public/browser/web_ui_data_source.h"
  28 #include "content/public/browser/web_ui_message_handler.h"
  29 #include "grit/browser_resources.h"
  30 #include "third_party/cros_system_api/dbus/service_constants.h"
  31
  32 using content::WebContents;
  33 using content::WebUIMessageHandler;
  34
  35 namespace chromeos {
  36
  37 namespace {
  38
  39 // JS API callbacks names.
  40 const char kJsApiCancel[] = "cancel";
  41 const char kJsApiConnect[] = "connect";
  42 const char kJsApiPageReady[] = "pageReady";
  43
  44 // Page JS API function names.
  45 const char kJsApiShowNetworks[] = "mobile.ChooseNetwork.showNetworks";
  46 const char kJsApiShowScanning[] = "mobile.ChooseNetwork.showScanning";
  47
  48 // Network properties.
  49 const char kNetworkIdProperty[] = "networkId";
  50 const char kOperatorNameProperty[] = "operatorName";
  51 const char kStatusProperty[] = "status";
  52 const char kTechnologyProperty[] = "technology";
  53
  54 content::WebUIDataSource* CreateChooseMobileNetworkUIHTMLSource() {
  55   content::WebUIDataSource* source = content::WebUIDataSource::Create(
  56       chrome::kChromeUIChooseMobileNetworkHost);
  57
  58   source->AddLocalizedString("chooseNetworkTitle",
  59                              IDS_NETWORK_CHOOSE_MOBILE_NETWORK);
  60   source->AddLocalizedString("scanningMsgLine1",
  61                              IDS_NETWORK_SCANNING_FOR_MOBILE_NETWORKS);
  62   source->AddLocalizedString("scanningMsgLine2",
  63                              IDS_NETWORK_SCANNING_THIS_MAY_TAKE_A_MINUTE);
  64   source->AddLocalizedString("noMobileNetworks",
  65                              IDS_NETWORK_NO_MOBILE_NETWORKS);
  66   source->AddLocalizedString("connect", IDS_OPTIONS_SETTINGS_CONNECT);
  67   source->AddLocalizedString("cancel", IDS_CANCEL);
  68
  69   source->SetJsonPath("strings.js");
  70   source->AddResourcePath("choose_mobile_network.js",
  71                           IDR_CHOOSE_MOBILE_NETWORK_JS);
  72   source->SetDefaultResource(IDR_CHOOSE_MOBILE_NETWORK_HTML);
  73   return source;
  74 }
  75
  76 chromeos::NetworkDeviceHandler* GetNetworkDeviceHandler() {
  77   return chromeos::NetworkHandler::Get()->network_device_handler();
  78 }
  79
  80 chromeos::NetworkStateHandler* GetNetworkStateHandler() {
  81   return chromeos::NetworkHandler::Get()->network_state_handler();
  82 }
  83
  84 void NetworkOperationErrorCallback(
  85     const std::string& operation_name,
  86     const std::string& error_name,
  87     scoped_ptr<base::DictionaryValue> error_data) {
  88   NET_LOG_ERROR("Operation failed: " + error_name, operation_name);
  89 }
  90
  91 class ChooseMobileNetworkHandler
  92     : public WebUIMessageHandler,
  93       public NetworkStateHandlerObserver {
  94  public:
  95   ChooseMobileNetworkHandler();
  96   virtual ~ChooseMobileNetworkHandler();
  97
  98   // WebUIMessageHandler implementation.
  99   virtual void RegisterMessages() override;
 100
 101   // NetworkStateHandlerObserver implementation.
 102   virtual void DeviceListChanged() override;
 103
 104  private:
 105   // Handlers for JS WebUI messages.
 106   void HandleCancel(const base::ListValue* args);
 107   void HandleConnect(const base::ListValue* args);
 108   void HandlePageReady(const base::ListValue* args);
 109
 110   std::string device_path_;
 111   base::ListValue networks_list_;
 112   bool is_page_ready_;
 113   bool has_pending_results_;
 114
 115   DISALLOW_COPY_AND_ASSIGN(ChooseMobileNetworkHandler);
 116 };
 117
 118 // ChooseMobileNetworkHandler implementation.
 119
 120 ChooseMobileNetworkHandler::ChooseMobileNetworkHandler()
 121     : is_page_ready_(false),
 122       has_pending_results_(false) {
 123   NetworkStateHandler* handler = GetNetworkStateHandler();
 124   const DeviceState* cellular =
 125       handler->GetDeviceStateByType(NetworkTypePattern::Cellular());
 126   if (!cellular) {
 127     NET_LOG_ERROR(
 128         "A cellular device is not available.",
 129         "Cannot initiate a cellular network scan without a cellular device.");
 130     return;
 131   }
 132   handler->AddObserver(this, FROM_HERE);
 133   device_path_ = cellular->path();
 134   GetNetworkDeviceHandler()->ProposeScan(
 135       device_path_,
 136       base::Bind(&base::DoNothing),
 137       base::Bind(&NetworkOperationErrorCallback, "ProposeScan"));
 138 }
 139
 140 ChooseMobileNetworkHandler::~ChooseMobileNetworkHandler() {
 141   GetNetworkStateHandler()->RemoveObserver(this, FROM_HERE);
 142 }
 143
 144 void ChooseMobileNetworkHandler::RegisterMessages() {
 145   web_ui()->RegisterMessageCallback(
 146       kJsApiCancel,
 147       base::Bind(&ChooseMobileNetworkHandler::HandleCancel,
 148                  base::Unretained(this)));
 149   web_ui()->RegisterMessageCallback(
 150       kJsApiConnect,
 151       base::Bind(&ChooseMobileNetworkHandler::HandleConnect,
 152                  base::Unretained(this)));
 153   web_ui()->RegisterMessageCallback(
 154       kJsApiPageReady,
 155       base::Bind(&ChooseMobileNetworkHandler::HandlePageReady,
 156                  base::Unretained(this)));
 157 }
 158
 159 void ChooseMobileNetworkHandler::DeviceListChanged() {
 160   const DeviceState* cellular = GetNetworkStateHandler()->GetDeviceState(
 161       device_path_);
 162   networks_list_.Clear();
 163   if (!cellular) {
 164     LOG(WARNING) << "Cellular device with path '" << device_path_
 165                  << "' disappeared.";
 166     return;
 167   }
 168   if (cellular->scanning()) {
 169     NET_LOG_EVENT("ChooseMobileNetwork", "Device is scanning for networks.");
 170     web_ui()->CallJavascriptFunction(kJsApiShowScanning);
 171     return;
 172   }
 173   const DeviceState::CellularScanResults& scan_results =
 174       cellular->scan_results();
 175   std::set<std::string> network_ids;
 176   for (DeviceState::CellularScanResults::const_iterator it =
 177       scan_results.begin(); it != scan_results.end(); ++it) {
 178     // We need to remove duplicates from the list because same network with
 179     // different technologies are listed multiple times. But ModemManager
 180     // Register API doesn't allow technology to be specified so just show unique
 181     // network in UI.
 182     if (network_ids.insert(it->network_id).second) {
 183       base::DictionaryValue* network = new base::DictionaryValue();
 184       network->SetString(kNetworkIdProperty, it->network_id);
 185       if (!it->long_name.empty())
 186         network->SetString(kOperatorNameProperty, it->long_name);
 187       else if (!it->short_name.empty())
 188         network->SetString(kOperatorNameProperty, it->short_name);
 189       else
 190         network->SetString(kOperatorNameProperty, it->network_id);
 191       network->SetString(kStatusProperty, it->status);
 192       network->SetString(kTechnologyProperty, it->technology);
 193       networks_list_.Append(network);
 194     }
 195   }
 196   if (is_page_ready_) {
 197     web_ui()->CallJavascriptFunction(kJsApiShowNetworks, networks_list_);
 198     networks_list_.Clear();
 199     has_pending_results_ = false;
 200   } else {
 201     has_pending_results_ = true;
 202   }
 203 }
 204
 205 void ChooseMobileNetworkHandler::HandleCancel(const base::ListValue* args) {
 206   const size_t kConnectParamCount = 0;
 207   if (args->GetSize() != kConnectParamCount) {
 208     NOTREACHED();
 209     return;
 210   }
 211
 212   // Switch to automatic mode.
 213   GetNetworkDeviceHandler()->RegisterCellularNetwork(
 214       device_path_,
 215       "",  // An empty string is for registration with the home network.
 216       base::Bind(&base::DoNothing),
 217       base::Bind(&NetworkOperationErrorCallback,
 218                  "Register in automatic mode."));
 219 }
 220
 221 void ChooseMobileNetworkHandler::HandleConnect(const base::ListValue* args) {
 222   std::string network_id;
 223   const size_t kConnectParamCount = 1;
 224   if (args->GetSize() != kConnectParamCount ||
 225       !args->GetString(0, &network_id)) {
 226     NOTREACHED();
 227     return;
 228   }
 229
 230   GetNetworkDeviceHandler()->RegisterCellularNetwork(
 231       device_path_,
 232       network_id,
 233       base::Bind(&base::DoNothing),
 234       base::Bind(&NetworkOperationErrorCallback,
 235                  std::string("Register to network: ") + network_id));
 236 }
 237
 238 void ChooseMobileNetworkHandler::HandlePageReady(const base::ListValue* args) {
 239   const size_t kConnectParamCount = 0;
 240   if (args->GetSize() != kConnectParamCount) {
 241     NOTREACHED();
 242     return;
 243   }
 244
 245   if (has_pending_results_) {
 246     web_ui()->CallJavascriptFunction(kJsApiShowNetworks, networks_list_);
 247     networks_list_.Clear();
 248     has_pending_results_ = false;
 249   }
 250   is_page_ready_ = true;
 251 }
 252
 253 }  // namespace
 254
 255 ChooseMobileNetworkUI::ChooseMobileNetworkUI(content::WebUI* web_ui)
 256     : WebUIController(web_ui) {
 257   ChooseMobileNetworkHandler* handler = new ChooseMobileNetworkHandler();
 258   web_ui->AddMessageHandler(handler);
 259   // Set up the "chrome://choose-mobile-network" source.
 260   Profile* profile = Profile::FromWebUI(web_ui);
 261   content::WebUIDataSource::Add(
 262       profile, CreateChooseMobileNetworkUIHTMLSource());
 263 }
 264
 265 }  // namespace chromeos