chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.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/login/network_dropdown_handler.h"
   6
   7 #include "chrome/browser/chromeos/login/ui/webui_login_display.h"
   8 #include "chrome/browser/ui/webui/chromeos/login/network_dropdown.h"
   9 #include "chrome/grit/generated_resources.h"
  10 #include "components/login/localized_values_builder.h"
  11
  12 namespace {
  13
  14 const char kJsScreenPath[] = "cr.ui.DropDown";
  15
  16 // JS API callbacks names.
  17 const char kJsApiNetworkItemChosen[] = "networkItemChosen";
  18 const char kJsApiNetworkDropdownShow[] = "networkDropdownShow";
  19 const char kJsApiNetworkDropdownHide[] = "networkDropdownHide";
  20 const char kJsApiNetworkDropdownRefresh[] = "networkDropdownRefresh";
  21
  22 }  // namespace
  23
  24 namespace chromeos {
  25
  26 NetworkDropdownHandler::NetworkDropdownHandler()
  27     : BaseScreenHandler(kJsScreenPath) {
  28 }
  29
  30 NetworkDropdownHandler::~NetworkDropdownHandler() {
  31 }
  32
  33 void NetworkDropdownHandler::AddObserver(Observer* observer) {
  34   if (observer && !observers_.HasObserver(observer))
  35     observers_.AddObserver(observer);
  36 }
  37
  38 void NetworkDropdownHandler::RemoveObserver(Observer* observer) {
  39   observers_.RemoveObserver(observer);
  40 }
  41
  42 void NetworkDropdownHandler::DeclareLocalizedValues(
  43     ::login::LocalizedValuesBuilder* builder) {
  44   builder->Add("selectNetwork", IDS_NETWORK_SELECTION_SELECT);
  45   builder->Add("selectAnotherNetwork", IDS_ANOTHER_NETWORK_SELECTION_SELECT);
  46 }
  47
  48 void NetworkDropdownHandler::Initialize() {
  49 }
  50
  51 void NetworkDropdownHandler::RegisterMessages() {
  52   AddCallback(kJsApiNetworkItemChosen,
  53               &NetworkDropdownHandler::HandleNetworkItemChosen);
  54   AddCallback(kJsApiNetworkDropdownShow,
  55               &NetworkDropdownHandler::HandleNetworkDropdownShow);
  56   AddCallback(kJsApiNetworkDropdownHide,
  57               &NetworkDropdownHandler::HandleNetworkDropdownHide);
  58   AddCallback(kJsApiNetworkDropdownRefresh,
  59               &NetworkDropdownHandler::HandleNetworkDropdownRefresh);
  60 }
  61
  62 void NetworkDropdownHandler::OnConnectToNetworkRequested() {
  63   FOR_EACH_OBSERVER(Observer, observers_, OnConnectToNetworkRequested());
  64 }
  65
  66 void NetworkDropdownHandler::HandleNetworkItemChosen(double id) {
  67   if (dropdown_.get()) {
  68     dropdown_->OnItemChosen(static_cast<int>(id));
  69   } else {
  70     // It could happen with very low probability but still keep NOTREACHED to
  71     // detect if it starts happening all the time.
  72     NOTREACHED();
  73   }
  74 }
  75
  76 void NetworkDropdownHandler::HandleNetworkDropdownShow(
  77     const std::string& element_id,
  78     bool oobe) {
  79   dropdown_.reset(new NetworkDropdown(this, web_ui(), oobe));
  80 }
  81
  82 void NetworkDropdownHandler::HandleNetworkDropdownHide() {
  83   dropdown_.reset();
  84 }
  85
  86 void NetworkDropdownHandler::HandleNetworkDropdownRefresh() {
  87   // Since language change is async,
  88   // we may in theory be on another screen during this call.
  89   if (dropdown_.get())
  90     dropdown_->Refresh();
  91 }
  92
  93 }  // namespace chromeos