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