tray: Show warning in network tray when VPN or proxy used.

ash/system/network/network_list.cc

 // Copyright 2016 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/network/network_list.h"
 
 #include <stddef.h>
 
 #include "ash/strings/grit/ash_strings.h"
 #include "ash/system/network/network_icon.h"
 #include "ash/system/network/network_icon_animation.h"
 #include "ash/system/network/network_list_delegate.h"
 #include "ash/system/tray/system_menu_button.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_popup_item_style.h"
 #include "ash/system/tray/tray_popup_utils.h"
+#include "ash/system/tray/tri_view.h"
 #include "base/memory/ptr_util.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager/power_supply_properties.pb.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "chromeos/login/login_state.h"
 #include "chromeos/network/managed_network_configuration_handler.h"
 #include "chromeos/network/network_state.h"
 #include "chromeos/network/network_state_handler.h"
 #include "chromeos/network/network_state_handler_observer.h"
+#include "chromeos/network/proxy/ui_proxy_config_service.h"
 #include "components/device_event_log/device_event_log.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/color_palette.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/paint_vector_icon.h"
+#include "ui/views/background.h"
 #include "ui/views/controls/button/toggle_button.h"
+#include "ui/views/controls/image_view.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/controls/separator.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/layout/fill_layout.h"
 #include "ui/views/painter.h"
 #include "ui/views/view.h"
 
 using chromeos::LoginState;
 using chromeos::NetworkHandler;
 using chromeos::NetworkStateHandler;
@@ skipping 239 matching lines @@
 NetworkListView::NetworkListView(NetworkListDelegate* delegate)
     : needs_relayout_(false),
       delegate_(delegate),
       no_wifi_networks_view_(nullptr),
       no_cellular_networks_view_(nullptr),
       cellular_header_view_(nullptr),
       tether_header_view_(nullptr),
       wifi_header_view_(nullptr),
       cellular_separator_view_(nullptr),
       tether_separator_view_(nullptr),
-      wifi_separator_view_(nullptr) {
+      wifi_separator_view_(nullptr),
+      connection_warning_(nullptr) {
   CHECK(delegate_);
 }
 
 NetworkListView::~NetworkListView() {
   network_icon::NetworkIconAnimation::GetInstance()->RemoveObserver(this);
 }
 
 void NetworkListView::Update() {
   CHECK(container());
 
@@ skipping 170 matching lines @@
   container()->SizeToPreferredSize();
   delegate_->RelayoutScrollList();
   if (selected_view)
     container()->ScrollRectToVisible(selected_view->bounds());
 }
 
 std::unique_ptr<std::set<std::string>>
 NetworkListView::UpdateNetworkListEntries() {
   NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
 
+  // Keep an index where the next child should be inserted.
+  int index = 0;
+
+  bool show_connection_warning =
+      !!NetworkHandler::Get()->network_state_handler()->ConnectedNetworkByType(
+          NetworkTypePattern::VPN());
+  show_connection_warning =
+      show_connection_warning || NetworkHandler::Get()
+                                     ->ui_proxy_config_service()
+                                     ->HasDefaultNetworkProxyConfigured();
+
+  if (show_connection_warning) {
+    if (!connection_warning_)
+      connection_warning_ = CreateConnectionWarning();
+    PlaceViewAtIndex(connection_warning_, index++);
+  }
+
   // First add high-priority networks (not Wi-Fi nor cellular).
   std::unique_ptr<std::set<std::string>> new_guids =
-      UpdateNetworkChildren(NetworkInfo::Type::UNKNOWN, 0);
-
-  // Keep an index where the next child should be inserted.
-  int index = new_guids->size();
+      UpdateNetworkChildren(NetworkInfo::Type::UNKNOWN, index);
+  index += new_guids->size();
 
   const NetworkTypePattern pattern = delegate_->GetNetworkTypePattern();
   if (pattern.MatchesPattern(NetworkTypePattern::Cellular())) {
     if (handler->IsTechnologyAvailable(NetworkTypePattern::Cellular())) {
       index = UpdateSectionHeaderRow(
           NetworkTypePattern::Cellular(),
           handler->IsTechnologyEnabled(NetworkTypePattern::Cellular()), index,
           &cellular_header_view_, &cellular_separator_view_);
     }
 
@@ skipping 174 matching lines @@
   NetworkInfoMap::const_iterator found = last_network_info_map_.find(info.guid);
   if (found == last_network_info_map_.end()) {
     // If we cannot find |info| in |last_network_info_map_|, just return true
     // since this is a new network so we have nothing to compare.
     return true;
   } else {
     return *found->second != info;
   }
 }
 
+TriView* NetworkListView::CreateConnectionWarning() {
+  // Set up layout and apply sticky row property.
+  TriView* connection_warning = TrayPopupUtils::CreateDefaultRowView();
+  TrayPopupUtils::ConfigureAsStickyHeader(connection_warning);
+  connection_warning->set_background(
+      views::Background::CreateSolidBackground(kHeaderBackgroundColor));
+
+  // Set 'info' icon on left side.
+  views::ImageView* image_view = TrayPopupUtils::CreateMainImageView();
+  image_view->SetImage(
+      gfx::CreateVectorIcon(kSystemMenuInfoIcon, kMenuIconColor));
+  image_view->set_background(
+      views::Background::CreateSolidBackground(SK_ColorTRANSPARENT));
+  connection_warning->AddView(TriView::Container::START, image_view);
+
+  // Set message label in middle of row.
+  views::Label* label = TrayPopupUtils::CreateDefaultLabel();
+  label->SetText(
+      l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_NETWORK_MONITORED_WARNING));
+  label->set_background(
+      views::Background::CreateSolidBackground(SK_ColorTRANSPARENT));
+  TrayPopupItemStyle style(TrayPopupItemStyle::FontStyle::DETAILED_VIEW_LABEL);
+  style.SetupLabel(label);
+  connection_warning->AddView(TriView::Container::CENTER, label);
+
+  // Nothing to the right of the text.
+  connection_warning->SetContainerVisible(TriView::Container::END, false);
+  return connection_warning;
+}
+
 }  // namespace ash