// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ash/system/chromeos/network/network_state_list_detailed_view.h"

#include "ash/ash_switches.h"
#include "ash/root_window_controller.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/system/chromeos/network/network_connect.h"
#include "ash/system/chromeos/network/network_icon.h"
#include "ash/system/chromeos/network/network_icon_animation.h"
#include "ash/system/chromeos/network/tray_network_state_observer.h"
#include "ash/system/tray/fixed_sized_scroll_view.h"
#include "ash/system/tray/hover_highlight_view.h"
#include "ash/system/tray/system_tray.h"
#include "ash/system/tray/system_tray_delegate.h"
#include "ash/system/tray/tray_constants.h"
#include "ash/system/tray/tray_details_view.h"
#include "ash/system/tray/tray_popup_header_button.h"
#include "ash/system/tray/tray_popup_label_button.h"
#include "base/command_line.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "chromeos/chromeos_switches.h"
#include "chromeos/network/device_state.h"
#include "chromeos/network/favorite_state.h"
#include "chromeos/network/network_configuration_handler.h"
#include "chromeos/network/network_state.h"
#include "chromeos/network/network_state_handler.h"
#include "chromeos/network/shill_property_util.h"
#include "grit/ash_resources.h"
#include "grit/ash_strings.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
#include "ui/aura/window.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/views/bubble/bubble_delegate.h"
#include "ui/views/controls/label.h"
#include "ui/views/layout/box_layout.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/widget/widget.h"

using chromeos::DeviceState;
using chromeos::FavoriteState;
using chromeos::NetworkHandler;
using chromeos::NetworkState;
using chromeos::NetworkStateHandler;
using chromeos::NetworkTypePattern;

namespace ash {
namespace internal {
namespace tray {

namespace {

// Delay between scan requests.
const int kRequestScanDelaySeconds = 10;

// Create a label with the font size and color used in the network info bubble.
views::Label* CreateInfoBubbleLabel(const base::string16& text) {
  views::Label* label = new views::Label(text);
  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  label->SetFont(rb.GetFont(ui::ResourceBundle::SmallFont));
  label->SetEnabledColor(SkColorSetARGB(127, 0, 0, 0));
  return label;
}

// Create a label formatted for info items in the menu
views::Label* CreateMenuInfoLabel(const base::string16& text) {
  views::Label* label = new views::Label(text);
  label->set_border(views::Border::CreateEmptyBorder(
      ash::kTrayPopupPaddingBetweenItems,
      ash::kTrayPopupPaddingHorizontal,
      ash::kTrayPopupPaddingBetweenItems, 0));
  label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  label->SetEnabledColor(SkColorSetARGB(192, 0, 0, 0));
  return label;
}

// Create a row of labels for the network info bubble.
views::View* CreateInfoBubbleLine(const base::string16& text_label,
                                  const std::string& text_string) {
  views::View* view = new views::View;
  view->SetLayoutManager(
      new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0, 1));
  view->AddChildView(CreateInfoBubbleLabel(text_label));
  view->AddChildView(CreateInfoBubbleLabel(UTF8ToUTF16(": ")));
  view->AddChildView(CreateInfoBubbleLabel(UTF8ToUTF16(text_string)));
  return view;
}

}  // namespace


//------------------------------------------------------------------------------

struct NetworkInfo {
  NetworkInfo(const std::string& path)
      : service_path(path),
        disable(false),
        highlight(false) {
  }

  std::string service_path;
  base::string16 label;
  gfx::ImageSkia image;
  bool disable;
  bool highlight;
};

//------------------------------------------------------------------------------

// A bubble which displays network info.
class NetworkStateListDetailedView::InfoBubble
    : public views::BubbleDelegateView {
 public:
  InfoBubble(views::View* anchor,
             views::View* content,
             NetworkStateListDetailedView* detailed_view)
      : views::BubbleDelegateView(anchor, views::BubbleBorder::TOP_RIGHT),
        detailed_view_(detailed_view) {
    set_use_focusless(true);
    set_parent_window(ash::Shell::GetContainer(
        anchor->GetWidget()->GetNativeWindow()->GetRootWindow(),
        ash::internal::kShellWindowId_SettingBubbleContainer));
    SetLayoutManager(new views::FillLayout());
    AddChildView(content);
  }

  virtual ~InfoBubble() {
    detailed_view_->OnInfoBubbleDestroyed();
  }

  virtual bool CanActivate() const OVERRIDE { return false; }

 private:
  // Not owned.
  NetworkStateListDetailedView* detailed_view_;

  DISALLOW_COPY_AND_ASSIGN(InfoBubble);
};

//------------------------------------------------------------------------------
// NetworkStateListDetailedView

NetworkStateListDetailedView::NetworkStateListDetailedView(
    SystemTrayItem* owner,
    ListType list_type,
    user::LoginStatus login)
    : NetworkDetailedView(owner),
      list_type_(list_type),
      login_(login),
      info_icon_(NULL),
      button_wifi_(NULL),
      button_mobile_(NULL),
      other_wifi_(NULL),
      turn_on_wifi_(NULL),
      other_mobile_(NULL),
      other_vpn_(NULL),
      toggle_debug_preferred_networks_(NULL),
      settings_(NULL),
      proxy_settings_(NULL),
      scanning_view_(NULL),
      no_wifi_networks_view_(NULL),
      no_cellular_networks_view_(NULL),
      info_bubble_(NULL) {
}

NetworkStateListDetailedView::~NetworkStateListDetailedView() {
  if (info_bubble_)
    info_bubble_->GetWidget()->CloseNow();
  network_icon::NetworkIconAnimation::GetInstance()->RemoveObserver(this);
}

void NetworkStateListDetailedView::ManagerChanged() {
  UpdateNetworkList();
  UpdateHeaderButtons();
  UpdateNetworkExtra();
  Layout();
}

void NetworkStateListDetailedView::NetworkListChanged() {
  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
  if (list_type_ == LIST_TYPE_DEBUG_PREFERRED) {
    NetworkStateHandler::FavoriteStateList favorite_list;
    handler->GetFavoriteList(&favorite_list);
    UpdatePreferred(favorite_list);
  } else {
    NetworkStateHandler::NetworkStateList network_list;
    handler->GetNetworkList(&network_list);
    UpdateNetworks(network_list);
  }
  UpdateNetworkList();
  UpdateHeaderButtons();
  UpdateNetworkExtra();
  Layout();
}

void NetworkStateListDetailedView::NetworkServiceChanged(
    const NetworkState* network) {
  UpdateNetworkList();
  Layout();
}

void NetworkStateListDetailedView::NetworkIconChanged() {
  UpdateNetworkList();
  Layout();
}

// Overridden from NetworkDetailedView:

void NetworkStateListDetailedView::Init() {
  Reset();
  network_map_.clear();
  service_path_map_.clear();
  info_icon_ = NULL;
  button_wifi_ = NULL;
  button_mobile_ = NULL;
  other_wifi_ = NULL;
  turn_on_wifi_ = NULL;
  other_mobile_ = NULL;
  other_vpn_ = NULL;
  toggle_debug_preferred_networks_ = NULL;
  settings_ = NULL;
  proxy_settings_ = NULL;
  scanning_view_ = NULL;
  no_wifi_networks_view_ = NULL;
  no_cellular_networks_view_ = NULL;

  CreateScrollableList();
  CreateNetworkExtra();
  CreateHeaderEntry();
  CreateHeaderButtons();

  NetworkListChanged();

  CallRequestScan();
}

NetworkDetailedView::DetailedViewType
NetworkStateListDetailedView::GetViewType() const {
  return STATE_LIST_VIEW;
}

// Views overrides

void NetworkStateListDetailedView::ButtonPressed(views::Button* sender,
                                                 const ui::Event& event) {
  if (sender == info_icon_) {
    ToggleInfoBubble();
    return;
  }

  // If the info bubble was visible, close it when some other item is clicked.
  ResetInfoBubble();

  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
  ash::SystemTrayDelegate* delegate =
      ash::Shell::GetInstance()->system_tray_delegate();
  if (sender == button_wifi_) {
    bool enabled = handler->IsTechnologyEnabled(
        NetworkTypePattern::WiFi());
    handler->SetTechnologyEnabled(NetworkTypePattern::WiFi(),
                                  !enabled,
                                  chromeos::network_handler::ErrorCallback());
  } else if (sender == turn_on_wifi_) {
    handler->SetTechnologyEnabled(NetworkTypePattern::WiFi(),
                                  true,
                                  chromeos::network_handler::ErrorCallback());
  } else if (sender == button_mobile_) {
    ToggleMobile();
  } else if (sender == settings_) {
    delegate->ShowNetworkSettings("");
  } else if (sender == proxy_settings_) {
    delegate->ChangeProxySettings();
  } else if (sender == other_mobile_) {
    delegate->ShowOtherNetworkDialog(shill::kTypeCellular);
  } else if (sender == toggle_debug_preferred_networks_) {
    list_type_ = (list_type_ == LIST_TYPE_NETWORK)
        ? LIST_TYPE_DEBUG_PREFERRED : LIST_TYPE_NETWORK;
    // Re-initialize this after processing the event.
    base::MessageLoopForUI::current()->PostTask(
        FROM_HERE,
        base::Bind(&NetworkStateListDetailedView::Init, AsWeakPtr()));
  } else if (sender == other_wifi_) {
    delegate->ShowOtherNetworkDialog(shill::kTypeWifi);
  } else if (sender == other_vpn_) {
    delegate->ShowOtherNetworkDialog(shill::kTypeVPN);
  } else {
    NOTREACHED();
  }
}

void NetworkStateListDetailedView::OnViewClicked(views::View* sender) {
  // If the info bubble was visible, close it when some other item is clicked.
  ResetInfoBubble();

  if (sender == footer()->content()) {
    TransitionToDefaultView();
    return;
  }

  if (login_ == user::LOGGED_IN_LOCKED)
    return;

  std::map<views::View*, std::string>::iterator found =
      network_map_.find(sender);
  if (found == network_map_.end())
    return;

  const std::string& service_path = found->second;
  if (list_type_ == LIST_TYPE_DEBUG_PREFERRED) {
    NetworkHandler::Get()->network_configuration_handler()->
        RemoveConfiguration(service_path,
                            base::Bind(&base::DoNothing),
                            chromeos::network_handler::ErrorCallback());
    return;
  }

  const NetworkState* network = NetworkHandler::Get()->network_state_handler()->
      GetNetworkState(service_path);
  if (!network || network->IsConnectedState() || network->IsConnectingState()) {
    Shell::GetInstance()->system_tray_delegate()->ShowNetworkSettings(
        service_path);
  } else {
    ash::network_connect::ConnectToNetwork(service_path, NULL);
  }
}

// Create UI components.

void NetworkStateListDetailedView::CreateHeaderEntry() {
  CreateSpecialRow(IDS_ASH_STATUS_TRAY_NETWORK, this);
}

void NetworkStateListDetailedView::CreateHeaderButtons() {
  if (list_type_ != LIST_TYPE_VPN) {
    button_wifi_ = new TrayPopupHeaderButton(
        this,
        IDR_AURA_UBER_TRAY_WIFI_ENABLED,
        IDR_AURA_UBER_TRAY_WIFI_DISABLED,
        IDR_AURA_UBER_TRAY_WIFI_ENABLED_HOVER,
        IDR_AURA_UBER_TRAY_WIFI_DISABLED_HOVER,
        IDS_ASH_STATUS_TRAY_WIFI);
    button_wifi_->SetTooltipText(
        l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_DISABLE_WIFI));
    button_wifi_->SetToggledTooltipText(
        l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_ENABLE_WIFI));
    footer()->AddButton(button_wifi_);

    button_mobile_ = new TrayPopupHeaderButton(
        this,
        IDR_AURA_UBER_TRAY_CELLULAR_ENABLED,
        IDR_AURA_UBER_TRAY_CELLULAR_DISABLED,
        IDR_AURA_UBER_TRAY_CELLULAR_ENABLED_HOVER,
        IDR_AURA_UBER_TRAY_CELLULAR_DISABLED_HOVER,
        IDS_ASH_STATUS_TRAY_CELLULAR);
    button_mobile_->SetTooltipText(
        l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_DISABLE_MOBILE));
    button_mobile_->SetToggledTooltipText(
        l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_ENABLE_MOBILE));
    footer()->AddButton(button_mobile_);
  }

  info_icon_ = new TrayPopupHeaderButton(
      this,
      IDR_AURA_UBER_TRAY_NETWORK_INFO,
      IDR_AURA_UBER_TRAY_NETWORK_INFO,
      IDR_AURA_UBER_TRAY_NETWORK_INFO_HOVER,
      IDR_AURA_UBER_TRAY_NETWORK_INFO_HOVER,
      IDS_ASH_STATUS_TRAY_NETWORK_INFO);
  info_icon_->SetTooltipText(
      l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_NETWORK_INFO));
  footer()->AddButton(info_icon_);
}

void NetworkStateListDetailedView::CreateNetworkExtra() {
  if (login_ == user::LOGGED_IN_LOCKED)
    return;

  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();

  views::View* bottom_row = new views::View();
  views::BoxLayout* layout = new views::BoxLayout(
      views::BoxLayout::kHorizontal,
      kTrayMenuBottomRowPadding,
      kTrayMenuBottomRowPadding,
      kTrayMenuBottomRowPaddingBetweenItems);
  layout->set_spread_blank_space(true);
  bottom_row->SetLayoutManager(layout);

  if (list_type_ != LIST_TYPE_VPN) {
    other_wifi_ = new TrayPopupLabelButton(
        this, rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_OTHER_WIFI));
    bottom_row->AddChildView(other_wifi_);

    turn_on_wifi_ = new TrayPopupLabelButton(
        this, rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_TURN_ON_WIFI));
    bottom_row->AddChildView(turn_on_wifi_);

    other_mobile_ = new TrayPopupLabelButton(
        this, rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_OTHER_MOBILE));
    bottom_row->AddChildView(other_mobile_);

    if (CommandLine::ForCurrentProcess()->HasSwitch(
            ash::switches::kAshDebugShowPreferredNetworks)) {
      // Debugging UI to view and remove favorites from the status area.
      std::string toggle_debug_preferred_label =
          (list_type_ == LIST_TYPE_DEBUG_PREFERRED) ? "Visible" : "Preferred";
      toggle_debug_preferred_networks_ = new TrayPopupLabelButton(
          this, UTF8ToUTF16(toggle_debug_preferred_label));
      bottom_row->AddChildView(toggle_debug_preferred_networks_);
    }
  } else {
    other_vpn_ = new TrayPopupLabelButton(
        this,
        ui::ResourceBundle::GetSharedInstance().GetLocalizedString(
            IDS_ASH_STATUS_TRAY_OTHER_VPN));
    bottom_row->AddChildView(other_vpn_);
  }

  CreateSettingsEntry();
  DCHECK(settings_ || proxy_settings_);
  bottom_row->AddChildView(settings_ ? settings_ : proxy_settings_);

  AddChildView(bottom_row);
}

// Update UI components.

void NetworkStateListDetailedView::UpdateHeaderButtons() {
  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
  if (button_wifi_)
    UpdateTechnologyButton(button_wifi_, NetworkTypePattern::WiFi());
  if (button_mobile_) {
    UpdateTechnologyButton(button_mobile_, NetworkTypePattern::Mobile());
  }
  if (proxy_settings_)
    proxy_settings_->SetEnabled(handler->DefaultNetwork() != NULL);

  static_cast<views::View*>(footer())->Layout();
}

void NetworkStateListDetailedView::UpdateTechnologyButton(
    TrayPopupHeaderButton* button,
    const NetworkTypePattern& technology) {
  NetworkStateHandler::TechnologyState state =
      NetworkHandler::Get()->network_state_handler()->GetTechnologyState(
          technology);
  if (state == NetworkStateHandler::TECHNOLOGY_UNAVAILABLE) {
    button->SetVisible(false);
    return;
  }
  button->SetVisible(true);
  if (state == NetworkStateHandler::TECHNOLOGY_AVAILABLE) {
    button->SetEnabled(true);
    button->SetToggled(true);
  } else if (state == NetworkStateHandler::TECHNOLOGY_ENABLED) {
    button->SetEnabled(true);
    button->SetToggled(false);
  } else if (state == NetworkStateHandler::TECHNOLOGY_ENABLING) {
    button->SetEnabled(false);
    button->SetToggled(false);
  } else {  // Initializing
    button->SetEnabled(false);
    button->SetToggled(true);
  }
}

void NetworkStateListDetailedView::UpdateNetworks(
    const NetworkStateHandler::NetworkStateList& networks) {
  DCHECK(list_type_ != LIST_TYPE_DEBUG_PREFERRED);
  network_list_.clear();
  for (NetworkStateHandler::NetworkStateList::const_iterator iter =
           networks.begin(); iter != networks.end(); ++iter) {
    const NetworkState* network = *iter;
    if ((list_type_ == LIST_TYPE_NETWORK &&
         network->type() != shill::kTypeVPN) ||
        (list_type_ == LIST_TYPE_VPN &&
         network->type() == shill::kTypeVPN)) {
      NetworkInfo* info = new NetworkInfo(network->path());
      network_list_.push_back(info);
    }
  }
}

void NetworkStateListDetailedView::UpdatePreferred(
    const NetworkStateHandler::FavoriteStateList& favorites) {
  DCHECK(list_type_ == LIST_TYPE_DEBUG_PREFERRED);
  network_list_.clear();
  for (NetworkStateHandler::FavoriteStateList::const_iterator iter =
           favorites.begin(); iter != favorites.end(); ++iter) {
    const FavoriteState* favorite = *iter;
    NetworkInfo* info = new NetworkInfo(favorite->path());
    network_list_.push_back(info);
  }
}

void NetworkStateListDetailedView::UpdateNetworkList() {
  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();

  // First, update state for all networks
  bool animating = false;
  for (size_t i = 0; i < network_list_.size(); ++i) {
    NetworkInfo* info = network_list_[i];
    const NetworkState* network =
        handler->GetNetworkState(info->service_path);
    if (network) {
      info->image = network_icon::GetImageForNetwork(
          network, network_icon::ICON_TYPE_LIST);
      info->label = network_icon::GetLabelForNetwork(
          network, network_icon::ICON_TYPE_LIST);
      info->highlight =
          network->IsConnectedState() || network->IsConnectingState();
      info->disable =
          network->activation_state() == shill::kActivationStateActivating;
      if (!animating && network->IsConnectingState())
        animating = true;
    } else if (list_type_ == LIST_TYPE_DEBUG_PREFERRED) {
      // Favorites that are visible will use the same display info as the
      // visible network. Non visible favorites will show the disconnected
      // icon and the name of the network.
      const FavoriteState* favorite =
          handler->GetFavoriteState(info->service_path);
      if (favorite) {
        info->image = network_icon::GetImageForDisconnectedNetwork(
            network_icon::ICON_TYPE_LIST, favorite->type());
        info->label = UTF8ToUTF16(favorite->name());
      }
    }
  }
  if (animating)
    network_icon::NetworkIconAnimation::GetInstance()->AddObserver(this);
  else
    network_icon::NetworkIconAnimation::GetInstance()->RemoveObserver(this);

  // Get the updated list entries
  network_map_.clear();
  std::set<std::string> new_service_paths;
  bool needs_relayout = UpdateNetworkListEntries(&new_service_paths);

  // Remove old children
  std::set<std::string> remove_service_paths;
  for (ServicePathMap::const_iterator it = service_path_map_.begin();
       it != service_path_map_.end(); ++it) {
    if (new_service_paths.find(it->first) == new_service_paths.end()) {
      remove_service_paths.insert(it->first);
      network_map_.erase(it->second);
      scroll_content()->RemoveChildView(it->second);
      needs_relayout = true;
    }
  }

  for (std::set<std::string>::const_iterator remove_it =
           remove_service_paths.begin();
       remove_it != remove_service_paths.end(); ++remove_it) {
    service_path_map_.erase(*remove_it);
  }

  if (needs_relayout) {
    views::View* selected_view = NULL;
    for (ServicePathMap::const_iterator iter = service_path_map_.begin();
         iter != service_path_map_.end(); ++iter) {
      if (iter->second->hover()) {
        selected_view = iter->second;
        break;
      }
    }
    scroll_content()->SizeToPreferredSize();
    static_cast<views::View*>(scroller())->Layout();
    if (selected_view)
      scroll_content()->ScrollRectToVisible(selected_view->bounds());
  }
}

bool NetworkStateListDetailedView::CreateOrUpdateInfoLabel(
    int index, const base::string16& text, views::Label** label) {
  if (*label == NULL) {
    *label = CreateMenuInfoLabel(text);
    scroll_content()->AddChildViewAt(*label, index);
    return true;
  } else {
    (*label)->SetText(text);
    return OrderChild(*label, index);
  }
}

bool NetworkStateListDetailedView::UpdateNetworkChild(int index,
                                                      const NetworkInfo* info) {
  bool needs_relayout = false;
  HoverHighlightView* container = NULL;
  ServicePathMap::const_iterator found =
      service_path_map_.find(info->service_path);
  gfx::Font::FontStyle font =
      info->highlight ? gfx::Font::BOLD : gfx::Font::NORMAL;
  if (found == service_path_map_.end()) {
    container = new HoverHighlightView(this);
    container->AddIconAndLabel(info->image, info->label, font);
    scroll_content()->AddChildViewAt(container, index);
    container->set_border(views::Border::CreateEmptyBorder(
        0, kTrayPopupPaddingHorizontal, 0, 0));
    needs_relayout = true;
  } else {
    container = found->second;
    container->RemoveAllChildViews(true);
    container->AddIconAndLabel(info->image, info->label, font);
    container->Layout();
    container->SchedulePaint();
    needs_relayout = OrderChild(container, index);
  }
  if (info->disable)
    container->SetEnabled(false);
  network_map_[container] = info->service_path;
  service_path_map_[info->service_path] = container;
  return needs_relayout;
}

bool NetworkStateListDetailedView::OrderChild(views::View* view, int index) {
  if (scroll_content()->child_at(index) != view) {
    scroll_content()->ReorderChildView(view, index);
    return true;
  }
  return false;
}

bool NetworkStateListDetailedView::UpdateNetworkListEntries(
    std::set<std::string>* new_service_paths) {
  bool needs_relayout = false;
  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();

  // Insert child views
  int index = 0;

  // Highlighted networks
  for (size_t i = 0; i < network_list_.size(); ++i) {
    const NetworkInfo* info = network_list_[i];
    if (info->highlight) {
      if (UpdateNetworkChild(index++, info))
        needs_relayout = true;
      new_service_paths->insert(info->service_path);
    }
  }

  if (list_type_ == LIST_TYPE_NETWORK) {
    // Cellular initializing
    int status_message_id = network_icon::GetCellularUninitializedMsg();
    if (!status_message_id &&
        handler->IsTechnologyEnabled(NetworkTypePattern::Mobile()) &&
        !handler->FirstNetworkByType(NetworkTypePattern::Mobile())) {
      status_message_id = IDS_ASH_STATUS_TRAY_NO_CELLULAR_NETWORKS;
    }
    if (status_message_id) {
      base::string16 text = rb.GetLocalizedString(status_message_id);
      if (CreateOrUpdateInfoLabel(index++, text, &no_cellular_networks_view_))
        needs_relayout = true;
    } else if (no_cellular_networks_view_) {
      scroll_content()->RemoveChildView(no_cellular_networks_view_);
      no_cellular_networks_view_ = NULL;
      needs_relayout = true;
    }

    // "Wifi Enabled / Disabled"
    if (network_list_.empty()) {
      int message_id = handler->IsTechnologyEnabled(NetworkTypePattern::WiFi())
                           ? IDS_ASH_STATUS_TRAY_NETWORK_WIFI_ENABLED
                           : IDS_ASH_STATUS_TRAY_NETWORK_WIFI_DISABLED;
      base::string16 text = rb.GetLocalizedString(message_id);
      if (CreateOrUpdateInfoLabel(index++, text, &no_wifi_networks_view_))
        needs_relayout = true;
    } else if (no_wifi_networks_view_) {
      scroll_content()->RemoveChildView(no_wifi_networks_view_);
      no_wifi_networks_view_ = NULL;
      needs_relayout = true;
    }

    // "Wifi Scanning"
    if (handler->GetScanningByType(NetworkTypePattern::WiFi())) {
      base::string16 text =
          rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_WIFI_SCANNING_MESSAGE);
      if (CreateOrUpdateInfoLabel(index++, text, &scanning_view_))
        needs_relayout = true;
    } else if (scanning_view_ != NULL) {
      scroll_content()->RemoveChildView(scanning_view_);
      scanning_view_ = NULL;
      needs_relayout = true;
    }
  }

  // Un-highlighted networks
  for (size_t i = 0; i < network_list_.size(); ++i) {
    const NetworkInfo* info = network_list_[i];
    if (!info->highlight) {
      if (UpdateNetworkChild(index++, info))
        needs_relayout = true;
      new_service_paths->insert(info->service_path);
    }
  }

  // No networks or other messages (fallback)
  if (index == 0) {
    base::string16 text;
    if (list_type_ == LIST_TYPE_VPN)
      text = rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_NETWORK_NO_VPN);
    else
      text = rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_NO_NETWORKS);
    if (CreateOrUpdateInfoLabel(index++, text, &scanning_view_))
      needs_relayout = true;
  }

  return needs_relayout;
}

void NetworkStateListDetailedView::UpdateNetworkExtra() {
  if (login_ == user::LOGGED_IN_LOCKED)
    return;

  View* layout_parent = NULL;  // All these buttons have the same parent.
  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
  if (other_wifi_) {
    DCHECK(turn_on_wifi_);
    NetworkStateHandler::TechnologyState state =
        handler->GetTechnologyState(NetworkTypePattern::WiFi());
    if (state == NetworkStateHandler::TECHNOLOGY_UNAVAILABLE) {
      turn_on_wifi_->SetVisible(false);
      other_wifi_->SetVisible(false);
    } else {
      if (state == NetworkStateHandler::TECHNOLOGY_AVAILABLE) {
        turn_on_wifi_->SetVisible(true);
        turn_on_wifi_->SetEnabled(true);
        other_wifi_->SetVisible(false);
      } else if (state == NetworkStateHandler::TECHNOLOGY_ENABLED) {
        turn_on_wifi_->SetVisible(false);
        other_wifi_->SetVisible(true);
      } else {
        // Initializing or Enabling
        turn_on_wifi_->SetVisible(true);
        turn_on_wifi_->SetEnabled(false);
        other_wifi_->SetVisible(false);
      }
    }
    layout_parent = other_wifi_->parent();
  }

  if (other_mobile_) {
    bool show_other_mobile = false;
    NetworkStateHandler::TechnologyState state =
        handler->GetTechnologyState(NetworkTypePattern::Mobile());
    if (state != NetworkStateHandler::TECHNOLOGY_UNAVAILABLE) {
      const chromeos::DeviceState* device =
          handler->GetDeviceStateByType(NetworkTypePattern::Mobile());
      show_other_mobile = (device && device->support_network_scan());
    }
    if (show_other_mobile) {
      other_mobile_->SetVisible(true);
      other_mobile_->SetEnabled(
          state == NetworkStateHandler::TECHNOLOGY_ENABLED);
    } else {
      other_mobile_->SetVisible(false);
    }
    if (!layout_parent)
      layout_parent = other_wifi_->parent();
  }

  if (layout_parent)
    layout_parent->Layout();
}

void NetworkStateListDetailedView::CreateSettingsEntry() {
  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  if (login_ != user::LOGGED_IN_NONE) {
    // Settings, only if logged in.
    settings_ = new TrayPopupLabelButton(
        this, rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_NETWORK_SETTINGS));
  } else {
    proxy_settings_ = new TrayPopupLabelButton(
        this,
        rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_NETWORK_PROXY_SETTINGS));
  }
}

void NetworkStateListDetailedView::ToggleInfoBubble() {
  if (ResetInfoBubble())
    return;

  info_bubble_ = new InfoBubble(
      info_icon_, CreateNetworkInfoView(), this);
  views::BubbleDelegateView::CreateBubble(info_bubble_)->Show();
}

bool NetworkStateListDetailedView::ResetInfoBubble() {
  if (!info_bubble_)
    return false;
  info_bubble_->GetWidget()->Close();
  info_bubble_ = NULL;
  return true;
}

void NetworkStateListDetailedView::OnInfoBubbleDestroyed() {
  info_bubble_ = NULL;
}

views::View* NetworkStateListDetailedView::CreateNetworkInfoView() {
  ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();

  std::string ip_address("0.0.0.0");
  const NetworkState* network = handler->DefaultNetwork();
  if (network)
    ip_address = network->ip_address();

  views::View* container = new views::View;
  container->SetLayoutManager(
      new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 1));
  container->set_border(views::Border::CreateEmptyBorder(0, 5, 0, 5));

  std::string ethernet_address, wifi_address, vpn_address;
  if (list_type_ != LIST_TYPE_VPN) {
    ethernet_address = handler->FormattedHardwareAddressForType(
        NetworkTypePattern::Ethernet());
    wifi_address =
        handler->FormattedHardwareAddressForType(NetworkTypePattern::WiFi());
  } else {
    vpn_address =
        handler->FormattedHardwareAddressForType(NetworkTypePattern::VPN());
  }

  if (!ip_address.empty()) {
    container->AddChildView(CreateInfoBubbleLine(bundle.GetLocalizedString(
        IDS_ASH_STATUS_TRAY_IP), ip_address));
  }
  if (!ethernet_address.empty()) {
    container->AddChildView(CreateInfoBubbleLine(bundle.GetLocalizedString(
        IDS_ASH_STATUS_TRAY_ETHERNET), ethernet_address));
  }
  if (!wifi_address.empty()) {
    container->AddChildView(CreateInfoBubbleLine(bundle.GetLocalizedString(
        IDS_ASH_STATUS_TRAY_WIFI), wifi_address));
  }
  if (!vpn_address.empty()) {
    container->AddChildView(CreateInfoBubbleLine(bundle.GetLocalizedString(
        IDS_ASH_STATUS_TRAY_VPN), vpn_address));
  }

  // Avoid an empty bubble in the unlikely event that there is no network
  // information at all.
  if (!container->has_children()) {
    container->AddChildView(CreateInfoBubbleLabel(bundle.GetLocalizedString(
        IDS_ASH_STATUS_TRAY_NO_NETWORKS)));
  }

  return container;
}

void NetworkStateListDetailedView::CallRequestScan() {
  VLOG(1) << "Requesting Network Scan.";
  NetworkHandler::Get()->network_state_handler()->RequestScan();
  // Periodically request a scan while this UI is open.
  base::MessageLoopForUI::current()->PostDelayedTask(
      FROM_HERE,
      base::Bind(&NetworkStateListDetailedView::CallRequestScan, AsWeakPtr()),
      base::TimeDelta::FromSeconds(kRequestScanDelaySeconds));
}

void NetworkStateListDetailedView::ToggleMobile() {
  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
  bool enabled =
      handler->IsTechnologyEnabled(NetworkTypePattern::Mobile());
  ash::network_connect::SetTechnologyEnabled(NetworkTypePattern::Mobile(),
                                             !enabled);
}

}  // namespace tray
}  // namespace internal
}  // namespace ash