Revert of Remove a lot of pre-MD code from NetworkStateListDetailedView

ash/common/system/chromeos/network/network_list.cc

Index: ash/common/system/chromeos/network/network_list.cc
diff --git a/ash/common/system/chromeos/network/network_list.cc b/ash/common/system/chromeos/network/network_list.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d53e92d72355e26fcf3e604d845a3c74f0470d79
--- /dev/null
+++ b/ash/common/system/chromeos/network/network_list.cc
@@ -0,0 +1,322 @@
+// Copyright 2014 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/common/system/chromeos/network/network_list.h"
+
+#include <stddef.h>
+
+#include "ash/common/system/chromeos/network/network_icon.h"
+#include "ash/common/system/chromeos/network/network_icon_animation.h"
+#include "ash/common/system/chromeos/network/network_info.h"
+#include "ash/common/system/chromeos/network/network_list_delegate.h"
+#include "ash/strings/grit/ash_strings.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 "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/font.h"
+#include "ui/views/controls/label.h"
+#include "ui/views/view.h"
+
+using chromeos::LoginState;
+using chromeos::NetworkHandler;
+using chromeos::NetworkStateHandler;
+using chromeos::ManagedNetworkConfigurationHandler;
+using chromeos::NetworkTypePattern;
+
+namespace ash {
+
+namespace {
+
+bool IsProhibitedByPolicy(const chromeos::NetworkState* network) {
+  if (!NetworkTypePattern::WiFi().MatchesType(network->type()))
+    return false;
+  if (!LoginState::IsInitialized() || !LoginState::Get()->IsUserLoggedIn())
+    return false;
+  ManagedNetworkConfigurationHandler* managed_configuration_handler =
+      NetworkHandler::Get()->managed_network_configuration_handler();
+  const base::DictionaryValue* global_network_config =
+      managed_configuration_handler->GetGlobalConfigFromPolicy(
+          std::string() /* no username hash, device policy */);
+  bool policy_prohibites_unmanaged = false;
+  if (global_network_config) {
+    global_network_config->GetBooleanWithoutPathExpansion(
+        ::onc::global_network_config::kAllowOnlyPolicyNetworksToConnect,
+        &policy_prohibites_unmanaged);
+  }
+  if (!policy_prohibites_unmanaged)
+    return false;
+  return !managed_configuration_handler->FindPolicyByGuidAndProfile(
+      network->guid(), network->profile_path());
+}
+
+}  // namespace
+
+// NetworkListView:
+
+NetworkListView::NetworkListView(NetworkListDelegate* delegate)
+    : delegate_(delegate),
+      no_wifi_networks_view_(nullptr),
+      no_cellular_networks_view_(nullptr) {
+  CHECK(delegate_);
+}
+
+NetworkListView::~NetworkListView() {
+  network_icon::NetworkIconAnimation::GetInstance()->RemoveObserver(this);
+}
+
+void NetworkListView::Update() {
+  CHECK(container());
+  NetworkStateHandler::NetworkStateList network_list;
+  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
+  handler->GetVisibleNetworkList(&network_list);
+  UpdateNetworks(network_list);
+  UpdateNetworkIcons();
+  UpdateNetworkListInternal();
+}
+
+bool NetworkListView::IsNetworkEntry(views::View* view,
+                                     std::string* guid) const {
+  std::map<views::View*, std::string>::const_iterator found =
+      network_map_.find(view);
+  if (found == network_map_.end())
+    return false;
+  *guid = found->second;
+  return true;
+}
+
+void NetworkListView::UpdateNetworks(
+    const NetworkStateHandler::NetworkStateList& networks) {
+  SCOPED_NET_LOG_IF_SLOW();
+  network_list_.clear();
+  const NetworkTypePattern pattern = delegate_->GetNetworkTypePattern();
+  for (NetworkStateHandler::NetworkStateList::const_iterator iter =
+           networks.begin();
+       iter != networks.end(); ++iter) {
+    const chromeos::NetworkState* network = *iter;
+    if (!pattern.MatchesType(network->type()))
+      continue;
+    network_list_.push_back(base::MakeUnique<NetworkInfo>(network->guid()));
+  }
+}
+
+void NetworkListView::UpdateNetworkIcons() {
+  SCOPED_NET_LOG_IF_SLOW();
+  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
+
+  // First, update state for all networks
+  bool animating = false;
+
+  for (auto& info : network_list_) {
+    const chromeos::NetworkState* network =
+        handler->GetNetworkStateFromGuid(info->guid);
+    if (!network)
+      continue;
+    bool prohibited_by_policy = IsProhibitedByPolicy(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) ||
+        prohibited_by_policy;
+    if (network->Matches(NetworkTypePattern::WiFi()))
+      info->type = NetworkInfo::Type::WIFI;
+    else if (network->Matches(NetworkTypePattern::Cellular()))
+      info->type = NetworkInfo::Type::CELLULAR;
+    if (prohibited_by_policy) {
+      info->tooltip =
+          l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_NETWORK_PROHIBITED);
+    }
+    if (!animating && network->IsConnectingState())
+      animating = true;
+  }
+  if (animating)
+    network_icon::NetworkIconAnimation::GetInstance()->AddObserver(this);
+  else
+    network_icon::NetworkIconAnimation::GetInstance()->RemoveObserver(this);
+}
+
+void NetworkListView::UpdateNetworkListInternal() {
+  SCOPED_NET_LOG_IF_SLOW();
+  // Get the updated list entries
+  network_map_.clear();
+  std::set<std::string> new_guids;
+  bool needs_relayout = UpdateNetworkListEntries(&new_guids);
+
+  // Remove old children
+  std::set<std::string> remove_guids;
+  for (NetworkGuidMap::const_iterator it = network_guid_map_.begin();
+       it != network_guid_map_.end(); ++it) {
+    if (new_guids.find(it->first) == new_guids.end()) {
+      remove_guids.insert(it->first);
+      network_map_.erase(it->second);
+      delete it->second;
+      needs_relayout = true;
+    }
+  }
+
+  for (std::set<std::string>::const_iterator remove_it = remove_guids.begin();
+       remove_it != remove_guids.end(); ++remove_it) {
+    network_guid_map_.erase(*remove_it);
+  }
+
+  if (needs_relayout)
+    HandleRelayout();
+}
+
+void NetworkListView::HandleRelayout() {
+  views::View* selected_view = nullptr;
+  for (auto& iter : network_guid_map_) {
+    if (delegate_->IsViewHovered(iter.second)) {
+      selected_view = iter.second;
+      break;
+    }
+  }
+  container()->SizeToPreferredSize();
+  delegate_->RelayoutScrollList();
+  if (selected_view)
+    container()->ScrollRectToVisible(selected_view->bounds());
+}
+
+bool NetworkListView::UpdateNetworkListEntries(
+    std::set<std::string>* new_guids) {
+  bool needs_relayout = false;
+  NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
+
+  // Insert child views
+  int index = 0;
+
+  // Highlighted networks
+  needs_relayout |=
+      UpdateNetworkChildren(new_guids, &index, true /* highlighted */);
+
+  const NetworkTypePattern pattern = delegate_->GetNetworkTypePattern();
+  if (pattern.MatchesPattern(NetworkTypePattern::Cellular())) {
+    // Cellular initializing
+    int message_id = network_icon::GetCellularUninitializedMsg();
+    if (!message_id &&
+        handler->IsTechnologyEnabled(NetworkTypePattern::Mobile()) &&
+        !handler->FirstNetworkByType(NetworkTypePattern::Mobile())) {
+      message_id = IDS_ASH_STATUS_TRAY_NO_MOBILE_NETWORKS;
+    }
+    needs_relayout |=
+        UpdateInfoLabel(message_id, index, &no_cellular_networks_view_);
+
+    if (message_id)
+      ++index;
+  }
+
+  if (pattern.MatchesPattern(NetworkTypePattern::WiFi())) {
+    // "Wifi Enabled / Disabled"
+    int message_id = 0;
+    if (network_list_.empty()) {
+      message_id = handler->IsTechnologyEnabled(NetworkTypePattern::WiFi())
+                       ? IDS_ASH_STATUS_TRAY_NETWORK_WIFI_ENABLED
+                       : IDS_ASH_STATUS_TRAY_NETWORK_WIFI_DISABLED;
+    }
+    needs_relayout |=
+        UpdateInfoLabel(message_id, index, &no_wifi_networks_view_);
+    if (message_id)
+      ++index;
+  }
+
+  // Un-highlighted networks
+  needs_relayout |=
+      UpdateNetworkChildren(new_guids, &index, false /* not highlighted */);
+
+  // No networks or other messages (fallback)
+  if (index == 0) {
+    needs_relayout |= UpdateInfoLabel(IDS_ASH_STATUS_TRAY_NO_NETWORKS, index,
+                                      &no_wifi_networks_view_);
+  }
+
+  return needs_relayout;
+}
+
+bool NetworkListView::UpdateNetworkChildren(std::set<std::string>* new_guids,
+                                            int* child_index,
+                                            bool highlighted) {
+  bool needs_relayout = false;
+  int index = *child_index;
+  for (auto& info : network_list_) {
+    if (info->highlight != highlighted)
+      continue;
+    needs_relayout |= UpdateNetworkChild(index++, info.get());
+    new_guids->insert(info->guid);
+  }
+  *child_index = index;
+  return needs_relayout;
+}
+
+bool NetworkListView::UpdateNetworkChild(int index, const NetworkInfo* info) {
+  bool needs_relayout = false;
+  views::View* network_view = nullptr;
+  NetworkGuidMap::const_iterator found = network_guid_map_.find(info->guid);
+  if (found == network_guid_map_.end()) {
+    network_view = delegate_->CreateViewForNetwork(*info);
+    container()->AddChildViewAt(network_view, index);
+    needs_relayout = true;
+  } else {
+    network_view = found->second;
+    network_view->RemoveAllChildViews(true);
+    delegate_->UpdateViewForNetwork(network_view, *info);
+    network_view->Layout();
+    network_view->SchedulePaint();
+    needs_relayout = PlaceViewAtIndex(network_view, index);
+  }
+  if (info->disable)
+    network_view->SetEnabled(false);
+  network_map_[network_view] = info->guid;
+  network_guid_map_[info->guid] = network_view;
+  return needs_relayout;
+}
+
+bool NetworkListView::PlaceViewAtIndex(views::View* view, int index) {
+  if (container()->child_at(index) == view)
+    return false;
+  container()->ReorderChildView(view, index);
+  return true;
+}
+
+bool NetworkListView::UpdateInfoLabel(int message_id,
+                                      int index,
+                                      views::Label** label) {
+  CHECK(label);
+  bool needs_relayout = false;
+  if (message_id) {
+    ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
+    base::string16 text = rb.GetLocalizedString(message_id);
+    if (!*label) {
+      *label = delegate_->CreateInfoLabel();
+      (*label)->SetText(text);
+      container()->AddChildViewAt(*label, index);
+      needs_relayout = true;
+    } else {
+      (*label)->SetText(text);
+      needs_relayout = PlaceViewAtIndex(*label, index);
+    }
+  } else if (*label) {
+    delete *label;
+    *label = nullptr;
+    needs_relayout = true;
+  }
+  return needs_relayout;
+}
+
+void NetworkListView::NetworkIconChanged() {
+  Update();
+}
+
+}  // namespace ash