chrome/browser/ui/views/content_setting_bubble_contents.cc

// 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 "chrome/browser/ui/views/content_setting_bubble_contents.h"

#include <algorithm>
#include <utility>
#include <vector>

#include "base/ranges/algorithm.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
#include "chrome/browser/ui/browser_dialogs.h"
#include "chrome/browser/ui/layout_constants.h"
#include "chrome/browser/ui/views/chrome_layout_provider.h"
#include "chrome/browser/ui/views/chrome_typography.h"
#include "chrome/browser/ui/views/content_setting_domain_list_view.h"
#include "chrome/grit/generated_resources.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/strings/grit/components_strings.h"
#include "components/vector_icons/vector_icons.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/web_contents.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/models/combobox_model.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/color_utils.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/paint_vector_icon.h"
#include "ui/gfx/vector_icon_types.h"
#include "ui/native_theme/native_theme.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/controls/button/image_button_factory.h"
#include "ui/views/controls/button/label_button_border.h"
#include "ui/views/controls/button/md_text_button.h"
#include "ui/views/controls/button/radio_button.h"
#include "ui/views/controls/combobox/combobox.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/controls/label.h"
#include "ui/views/controls/link.h"
#include "ui/views/controls/scroll_view.h"
#include "ui/views/controls/separator.h"
#include "ui/views/layout/box_layout.h"
#include "ui/views/layout/grid_layout.h"
#include "ui/views/native_cursor.h"

namespace {

enum class LayoutRowType {
  DEFAULT,
  INDENTED,
  FULL_WIDTH,
};

// Represents a row containing a single view in the layout. The type determines
// the view's horizontal margins.
struct LayoutRow {
  std::unique_ptr<views::View> view;
  LayoutRowType type;
};

// A combobox model that builds the contents of the media capture devices menu
// in the content setting bubble.
class MediaComboboxModel : public ui::ComboboxModel {
 public:
  explicit MediaComboboxModel(blink::mojom::MediaStreamType type);
  ~MediaComboboxModel() override;

  blink::mojom::MediaStreamType type() const { return type_; }
  const blink::MediaStreamDevices& GetDevices() const;
  int GetDeviceIndex(const blink::MediaStreamDevice& device) const;

  // ui::ComboboxModel:
  int GetItemCount() const override;
  std::u16string GetItemAt(int index) const override;

 private:
  blink::mojom::MediaStreamType type_;

  DISALLOW_COPY_AND_ASSIGN(MediaComboboxModel);
};

// A view representing one or more rows, each containing a label and combobox
// pair, that allow the user to select a device for each media type (microphone
// and/or camera).
class MediaMenuBlock : public views::View {
 public:
  METADATA_HEADER(MediaMenuBlock);
  MediaMenuBlock(base::RepeatingCallback<void(views::Combobox*)> callback,
                 ContentSettingBubbleModel::MediaMenuMap media) {
    const ChromeLayoutProvider* provider = ChromeLayoutProvider::Get();

    views::GridLayout* layout =
        SetLayoutManager(std::make_unique<views::GridLayout>());
    constexpr int kColumnSetId = 0;
    views::ColumnSet* column_set = layout->AddColumnSet(kColumnSetId);
    column_set->AddColumn(views::GridLayout::LEADING, views::GridLayout::CENTER,
                          views::GridLayout::kFixedSize,
                          views::GridLayout::ColumnSize::kUsePreferred, 0, 0);
    column_set->AddPaddingColumn(
        views::GridLayout::kFixedSize,
        provider->GetDistanceMetric(
            views::DISTANCE_RELATED_CONTROL_HORIZONTAL));
    column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL, 1.0,
                          views::GridLayout::ColumnSize::kFixed, 0, 0);

    bool first_row = true;
    for (auto i = media.cbegin(); i != media.cend(); ++i) {
      if (!first_row) {
        layout->AddPaddingRow(views::GridLayout::kFixedSize,
                              provider->GetDistanceMetric(
                                  views::DISTANCE_RELATED_CONTROL_VERTICAL));
      }
      first_row = false;

      layout->StartRow(views::GridLayout::kFixedSize, kColumnSetId);
      blink::mojom::MediaStreamType stream_type = i->first;
      const ContentSettingBubbleModel::MediaMenu& menu = i->second;

      auto label = std::make_unique<views::Label>(menu.label);
      label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
      layout->AddView(std::move(label));

      auto combobox_model = std::make_unique<MediaComboboxModel>(stream_type);
      // Disable the device selection when the website is managing the devices
      // itself or if there are no devices present.
      const bool combobox_enabled =
          !menu.disabled && !combobox_model->GetDevices().empty();
      const int combobox_selected_index =
          combobox_model->GetDevices().empty()
              ? 0
              : combobox_model->GetDeviceIndex(menu.selected_device);
      // The combobox takes ownership of the model.
      auto combobox =
          std::make_unique<views::Combobox>(std::move(combobox_model));
      combobox->SetEnabled(combobox_enabled);
      combobox->SetCallback(base::BindRepeating(callback, combobox.get()));
      combobox->SetSelectedIndex(combobox_selected_index);
      layout->AddView(std::move(combobox));
    }
  }

  MediaMenuBlock(const MediaMenuBlock&) = delete;
  MediaMenuBlock& operator=(const MediaMenuBlock&) = delete;
};

BEGIN_METADATA(MediaMenuBlock, views::View)
END_METADATA

}  // namespace

// MediaComboboxModel ----------------------------------------------------------

MediaComboboxModel::MediaComboboxModel(blink::mojom::MediaStreamType type)
    : type_(type) {
  DCHECK(type_ == blink::mojom::MediaStreamType::DEVICE_AUDIO_CAPTURE ||
         type_ == blink::mojom::MediaStreamType::DEVICE_VIDEO_CAPTURE);
}

MediaComboboxModel::~MediaComboboxModel() {}

const blink::MediaStreamDevices& MediaComboboxModel::GetDevices() const {
  MediaCaptureDevicesDispatcher* dispatcher =
      MediaCaptureDevicesDispatcher::GetInstance();
  return type_ == blink::mojom::MediaStreamType::DEVICE_AUDIO_CAPTURE
             ? dispatcher->GetAudioCaptureDevices()
             : dispatcher->GetVideoCaptureDevices();
}

int MediaComboboxModel::GetDeviceIndex(
    const blink::MediaStreamDevice& device) const {
  const auto& devices = GetDevices();
  for (size_t i = 0; i < devices.size(); ++i) {
    if (device.id == devices[i].id)
      return i;
  }
  NOTREACHED();
  return 0;
}

int MediaComboboxModel::GetItemCount() const {
  return std::max(1, static_cast<int>(GetDevices().size()));
}

std::u16string MediaComboboxModel::GetItemAt(int index) const {
  return GetDevices().empty()
             ? l10n_util::GetStringUTF16(IDS_MEDIA_MENU_NO_DEVICE_TITLE)
             : base::UTF8ToUTF16(GetDevices()[index].name);
}

// ContentSettingBubbleContents::ListItemContainer -----------------------------

class ContentSettingBubbleContents::ListItemContainer : public views::View {
 public:
  METADATA_HEADER(ListItemContainer);
  explicit ListItemContainer(ContentSettingBubbleContents* parent);
  ListItemContainer(const ListItemContainer&) = delete;
  ListItemContainer& operator=(const ListItemContainer&) = delete;

  // Creates and adds child views representing |item|.
  void AddItem(const ContentSettingBubbleModel::ListItem& item);

  // Calling this will delete related children.
  void RemoveRowAtIndex(int index);

 private:
  using Row = std::pair<views::ImageView*, views::View*>;
  using NewRow = std::pair<std::unique_ptr<views::ImageView>,
                           std::unique_ptr<views::View>>;

  void ResetLayout();
  void AddRowToLayout(const Row& row);
  Row AddNewRowToLayout(NewRow row);
  void UpdateScrollHeight(const Row& row);

  ContentSettingBubbleContents* parent_;

  // Our controls representing list items, so we can add or remove
  // these dynamically. Each pair represents one list item.
  std::vector<Row> list_item_views_;
};

ContentSettingBubbleContents::ListItemContainer::ListItemContainer(
    ContentSettingBubbleContents* parent)
    : parent_(parent) {
  ResetLayout();
}

void ContentSettingBubbleContents::ListItemContainer::AddItem(
    const ContentSettingBubbleModel::ListItem& item) {
  // Padding for list items and icons.
  static constexpr gfx::Insets kTitleDescriptionListItemInset(3, 0, 13, 0);

  auto item_icon = std::make_unique<views::ImageView>();
  if (item.image) {
    item_icon->SetBorder(
        views::CreateEmptyBorder(kTitleDescriptionListItemInset));
    const SkColor icon_color =
        views::style::GetColor(*item_icon, CONTEXT_DIALOG_BODY_TEXT_SMALL,
                               views::style::STYLE_PRIMARY);
    item_icon->SetImage(CreateVectorIconWithBadge(
        *item.image, GetLayoutConstant(LOCATION_BAR_ICON_SIZE), icon_color,
        item.has_blocked_badge ? vector_icons::kBlockedBadgeIcon
                               : gfx::kNoneIcon));
  }

  std::unique_ptr<views::View> item_contents;
  if (item.has_link) {
    auto link = std::make_unique<views::Link>(item.title);
    link->SetElideBehavior(gfx::ELIDE_MIDDLE);
    link->SetHorizontalAlignment(gfx::HorizontalAlignment::ALIGN_LEFT);
    link->SetCallback(base::BindRepeating(
        [](const std::vector<Row>* items, const views::Link* link,
           ContentSettingBubbleContents* parent, const ui::Event& event) {
          const auto it = base::ranges::find(*items, link, &Row::second);
          DCHECK(it != items->cend());
          parent->LinkClicked(std::distance(items->cbegin(), it), event);
        },
        base::Unretained(&list_item_views_), base::Unretained(link.get()),
        base::Unretained(parent_)));
    item_contents = std::move(link);
  } else {
    item_contents = std::make_unique<views::View>();
    item_contents->SetBorder(
        views::CreateEmptyBorder(kTitleDescriptionListItemInset));
    item_contents->SetLayoutManager(std::make_unique<views::BoxLayout>(
        views::BoxLayout::Orientation::kVertical));
    const auto add_label = [&item_contents](const std::u16string& string,
                                            int style) {
      if (!string.empty()) {
        auto label = std::make_unique<views::Label>(
            string, views::style::CONTEXT_LABEL, style,
            gfx::DirectionalityMode::DIRECTIONALITY_FROM_UI);
        label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
        label->SetAllowCharacterBreak(true);
        item_contents->AddChildView(std::move(label));
      }
    };
    add_label(item.title, views::style::STYLE_PRIMARY);
    add_label(item.description, views::style::STYLE_DISABLED);
  }

  list_item_views_.push_back(AddNewRowToLayout(
      NewRow(std::move(item_icon), std::move(item_contents))));
}

void ContentSettingBubbleContents::ListItemContainer::RemoveRowAtIndex(
    int index) {
  auto& children = list_item_views_[index];
  delete children.first;
  delete children.second;
  list_item_views_.erase(list_item_views_.begin() + index);

  // As GridLayout can't remove rows, we have to rebuild it entirely.
  ResetLayout();
  for (auto& row : list_item_views_)
    AddRowToLayout(row);
}

void ContentSettingBubbleContents::ListItemContainer::ResetLayout() {
  views::GridLayout* layout =
      SetLayoutManager(std::make_unique<views::GridLayout>());
  views::ColumnSet* item_list_column_set = layout->AddColumnSet(0);
  item_list_column_set->AddColumn(
      views::GridLayout::LEADING, views::GridLayout::FILL,
      views::GridLayout::kFixedSize,
      views::GridLayout::ColumnSize::kUsePreferred, 0, 0);
  const int related_control_horizontal_spacing =
      ChromeLayoutProvider::Get()->GetDistanceMetric(
          views::DISTANCE_RELATED_CONTROL_HORIZONTAL);
  item_list_column_set->AddPaddingColumn(views::GridLayout::kFixedSize,
                                         related_control_horizontal_spacing);
  item_list_column_set->AddColumn(
      views::GridLayout::LEADING, views::GridLayout::FILL, 1.0,
      views::GridLayout::ColumnSize::kUsePreferred, 0, 0);
  auto* scroll_view = views::ScrollView::GetScrollViewForContents(this);
  // When this function is called from the constructor, the view has not yet
  // been placed into a ScrollView.
  if (scroll_view)
    scroll_view->ClipHeightTo(-1, -1);
}

void ContentSettingBubbleContents::ListItemContainer::AddRowToLayout(
    const Row& row) {
  views::GridLayout* layout =
      static_cast<views::GridLayout*>(GetLayoutManager());
  DCHECK(layout);
  layout->StartRow(views::GridLayout::kFixedSize, 0);
  layout->AddExistingView(row.first);
  layout->AddExistingView(row.second);
  UpdateScrollHeight(row);
}

ContentSettingBubbleContents::ListItemContainer::Row
ContentSettingBubbleContents::ListItemContainer::AddNewRowToLayout(NewRow row) {
  views::GridLayout* layout =
      static_cast<views::GridLayout*>(GetLayoutManager());
  DCHECK(layout);
  Row row_result;
  layout->StartRow(views::GridLayout::kFixedSize, 0);
  row_result.first = layout->AddView(std::move(row.first));
  row_result.second = layout->AddView(std::move(row.second));
  UpdateScrollHeight(row_result);
  return row_result;
}

void ContentSettingBubbleContents::ListItemContainer::UpdateScrollHeight(
    const Row& row) {
  auto* scroll_view = views::ScrollView::GetScrollViewForContents(this);
  DCHECK(scroll_view);
  if (!scroll_view->is_bounded()) {
    // Display a maximum of 4 visible items in a list before scrolling.
    static constexpr int kMaxVisibleListItems = 4;
    scroll_view->ClipHeightTo(
        0, std::max(row.first->GetPreferredSize().height(),
                    row.second->GetPreferredSize().height()) *
               kMaxVisibleListItems);
  }
}

BEGIN_METADATA(ContentSettingBubbleContents, ListItemContainer, views::View)
END_METADATA

// ContentSettingBubbleContents -----------------------------------------------

ContentSettingBubbleContents::ContentSettingBubbleContents(
    std::unique_ptr<ContentSettingBubbleModel> content_setting_bubble_model,
    content::WebContents* web_contents,
    views::View* anchor_view,
    views::BubbleBorder::Arrow arrow)
    : content::WebContentsObserver(web_contents),
      BubbleDialogDelegateView(anchor_view, arrow),
      content_setting_bubble_model_(std::move(content_setting_bubble_model)) {
  chrome::RecordDialogCreation(
      chrome::DialogIdentifier::CONTENT_SETTING_CONTENTS);

  // Although other code in this class treats content_setting_bubble_model_ as
  // though it's optional, in fact it can only become null if
  // WebContentsDestroyed() is called, which can't happen until the constructor
  // has run - so it is never null here.
  DCHECK(content_setting_bubble_model_);
  const std::u16string& done_text =
      content_setting_bubble_model_->bubble_content().done_button_text;
  const std::u16string& cancel_text =
      content_setting_bubble_model_->bubble_content().cancel_button_text;
  SetButtons(cancel_text.empty()
                 ? ui::DIALOG_BUTTON_OK
                 : (ui::DIALOG_BUTTON_OK | ui::DIALOG_BUTTON_CANCEL));
  SetButtonLabel(ui::DIALOG_BUTTON_OK, done_text.empty()
                                           ? l10n_util::GetStringUTF16(IDS_DONE)
                                           : done_text);
  SetExtraView(CreateHelpAndManageView());
  SetAcceptCallback(
      base::BindOnce(&ContentSettingBubbleModel::OnDoneButtonClicked,
                     base::Unretained(content_setting_bubble_model_.get())));

  if (!cancel_text.empty()) {
    SetButtonLabel(ui::DIALOG_BUTTON_CANCEL, cancel_text);
    SetCancelCallback(
        base::BindOnce(&ContentSettingBubbleModel::OnCancelButtonClicked,
                       base::Unretained(content_setting_bubble_model_.get())));
  }

  set_fixed_width(views::LayoutProvider::Get()->GetDistanceMetric(
      views::DISTANCE_BUBBLE_PREFERRED_WIDTH));
}

ContentSettingBubbleContents::~ContentSettingBubbleContents() {
  // Must remove the children here so the comboboxes get destroyed before
  // their associated models.
  RemoveAllChildViews(true);
}

void ContentSettingBubbleContents::WindowClosing() {
  if (content_setting_bubble_model_)
    content_setting_bubble_model_->CommitChanges();
}

void ContentSettingBubbleContents::OnListItemAdded(
    const ContentSettingBubbleModel::ListItem& item) {
  DCHECK(list_item_container_);
  list_item_container_->AddItem(item);
  SizeToContents();
}

void ContentSettingBubbleContents::OnListItemRemovedAt(int index) {
  DCHECK(list_item_container_);
  list_item_container_->RemoveRowAtIndex(index);
  SizeToContents();
}

int ContentSettingBubbleContents::GetSelectedRadioOption() {
  for (RadioGroup::const_iterator i(radio_group_.begin());
       i != radio_group_.end(); ++i) {
    if ((*i)->GetChecked())
      return i - radio_group_.begin();
  }
  NOTREACHED();
  return 0;
}

void ContentSettingBubbleContents::OnThemeChanged() {
  views::BubbleDialogDelegateView::OnThemeChanged();
  if (learn_more_button_)
    StyleLearnMoreButton();
}

std::u16string ContentSettingBubbleContents::GetWindowTitle() const {
  if (!content_setting_bubble_model_)
    return std::u16string();
  return content_setting_bubble_model_->bubble_content().title;
}

bool ContentSettingBubbleContents::ShouldShowCloseButton() const {
  return true;
}

void ContentSettingBubbleContents::Init() {
  DCHECK(content_setting_bubble_model_);
  const ChromeLayoutProvider* provider = ChromeLayoutProvider::Get();
  SetLayoutManager(std::make_unique<views::BoxLayout>(
      views::BoxLayout::Orientation::kVertical, gfx::Insets(),
      provider->GetDistanceMetric(views::DISTANCE_RELATED_CONTROL_VERTICAL)));
  std::vector<LayoutRow> rows;

  const ContentSettingBubbleModel::BubbleContent& bubble_content =
      content_setting_bubble_model_->bubble_content();

  if (!bubble_content.message.empty()) {
    auto message_label = std::make_unique<views::Label>(
        bubble_content.message, views::style::CONTEXT_LABEL,
        views::style::STYLE_SECONDARY);
    message_label->SetMultiLine(true);
    message_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
    rows.push_back({std::move(message_label), LayoutRowType::DEFAULT});
  }

  // Layout for the item list (blocked plugins and popups).
  if (!bubble_content.list_items.empty()) {
    auto list_item_container = std::make_unique<ListItemContainer>(this);
    list_item_container->SetBorder(
        views::CreateEmptyBorder(0, margins().left(), 0, margins().right()));
    auto scroll_view = std::make_unique<views::ScrollView>();
    list_item_container_ =
        scroll_view->SetContents(std::move(list_item_container));
    rows.push_back({std::move(scroll_view), LayoutRowType::FULL_WIDTH});

    for (const ContentSettingBubbleModel::ListItem& list_item :
         bubble_content.list_items) {
      list_item_container_->AddItem(list_item);
    }
  }

  const ContentSettingBubbleModel::RadioGroup& radio_group =
      bubble_content.radio_group;
  if (!radio_group.radio_items.empty()) {
    for (auto i(radio_group.radio_items.begin());
         i != radio_group.radio_items.end(); ++i) {
      auto radio = std::make_unique<views::RadioButton>(*i, 0);
      radio->SetEnabled(radio_group.user_managed);
      radio->SetMultiLine(true);
      radio_group_.push_back(radio.get());
      rows.push_back({std::move(radio), LayoutRowType::INDENTED});
    }
    DCHECK(!radio_group_.empty());
    // Now that the buttons have been added to the view hierarchy, it's safe
    // to call SetChecked() on them.
    radio_group_[radio_group.default_item]->SetChecked(true);
  }

  // Layout code for the media device menus.
  if (content_setting_bubble_model_->AsMediaStreamBubbleModel()) {
    rows.push_back(
        {std::make_unique<MediaMenuBlock>(
             base::BindRepeating(&ContentSettingBubbleContents::OnPerformAction,
                                 base::Unretained(this)),
             bubble_content.media_menus),
         LayoutRowType::INDENTED});
  }

  for (auto i(bubble_content.domain_lists.begin());
       i != bubble_content.domain_lists.end(); ++i) {
    auto list_view =
        std::make_unique<ContentSettingDomainListView>(i->title, i->hosts);
    rows.push_back({std::move(list_view), LayoutRowType::DEFAULT});
  }

  if (!bubble_content.custom_link.empty()) {
    auto custom_link =
        std::make_unique<views::Link>(bubble_content.custom_link);
    custom_link->SetEnabled(bubble_content.custom_link_enabled);
    custom_link->SetMultiLine(true);
    custom_link->SetCallback(
        base::BindRepeating(&ContentSettingBubbleContents::CustomLinkClicked,
                            base::Unretained(this)));
    custom_link->SetHorizontalAlignment(gfx::ALIGN_LEFT);
    rows.push_back({std::move(custom_link), LayoutRowType::DEFAULT});
  }

  if (bubble_content.manage_text_style ==
      ContentSettingBubbleModel::ManageTextStyle::kCheckbox) {
    auto manage_checkbox = std::make_unique<views::Checkbox>(
        bubble_content.manage_text,
        base::BindRepeating(
            [](ContentSettingBubbleContents* bubble) {
              bubble->content_setting_bubble_model_->OnManageCheckboxChecked(
                  bubble->manage_checkbox_->GetChecked());
              // Toggling the check state may change the dialog button text.
              bubble->DialogModelChanged();
            },
            base::Unretained(this)));
    manage_checkbox_ = manage_checkbox.get();
    rows.push_back({std::move(manage_checkbox), LayoutRowType::DEFAULT});
  }

  // We have to apply the left and right margins manually, because rows using
  // LayoutRowType::FULL_WIDTH need to not have them applied to look correct.
  const int left_margin = margins().left();
  const int right_margin = margins().right();
  set_margins(gfx::Insets(margins().top(), 0, margins().bottom(), 0));

  for (LayoutRow& row : rows) {
    if (row.type != LayoutRowType::FULL_WIDTH) {
      const int row_left_margin =
          left_margin + (row.type == LayoutRowType::INDENTED
                             ? provider->GetDistanceMetric(
                                   DISTANCE_SUBSECTION_HORIZONTAL_INDENT)
                             : 0);
      row.view->SetBorder(
          views::CreateEmptyBorder(0, row_left_margin, 0, right_margin));
    }
    AddChildView(std::move(row.view));
  }

  content_setting_bubble_model_->set_owner(this);
}

void ContentSettingBubbleContents::StyleLearnMoreButton() {
  DCHECK(learn_more_button_);
  SkColor text_color = GetNativeTheme()->GetSystemColor(
      ui::NativeTheme::kColorId_LabelEnabledColor);
  views::SetImageFromVectorIcon(learn_more_button_,
                                vector_icons::kHelpOutlineIcon, text_color);
}

std::unique_ptr<views::View>
ContentSettingBubbleContents::CreateHelpAndManageView() {
  DCHECK(content_setting_bubble_model_);
  const auto& bubble_content = content_setting_bubble_model_->bubble_content();
  const auto* layout = ChromeLayoutProvider::Get();
  std::vector<std::unique_ptr<views::View>> extra_views;
  // Optionally add a help icon if the view wants to link to a help page.
  if (bubble_content.show_learn_more) {
    auto learn_more_button = views::CreateVectorImageButton(base::BindRepeating(
        [](ContentSettingBubbleContents* bubble) {
          bubble->GetWidget()->Close();
          bubble->content_setting_bubble_model_->OnLearnMoreClicked();
        },
        base::Unretained(this)));
    learn_more_button->SetTooltipText(
        l10n_util::GetStringUTF16(IDS_LEARN_MORE));
    learn_more_button_ = learn_more_button.get();
    extra_views.push_back(std::move(learn_more_button));
  }
  // Optionally add a "Manage" button if the view wants to use a button to
  // invoke a separate management UI related to the dialog content.
  if (bubble_content.manage_text_style ==
      ContentSettingBubbleModel::ManageTextStyle::kButton) {
    std::u16string title = bubble_content.manage_text;
    if (title.empty())
      title = l10n_util::GetStringUTF16(IDS_MANAGE);
    auto manage_button = std::make_unique<views::MdTextButton>(
        base::BindRepeating(
            [](ContentSettingBubbleContents* bubble) {
              bubble->GetWidget()->Close();
              bubble->content_setting_bubble_model_->OnManageButtonClicked();
            },
            base::Unretained(this)),
        title);
    manage_button->SetMinSize(gfx::Size(
        layout->GetDistanceMetric(views::DISTANCE_DIALOG_BUTTON_MINIMUM_WIDTH),
        0));
    manage_button_ = manage_button.get();
    extra_views.push_back(std::move(manage_button));
  }
  if (extra_views.empty())
    return nullptr;
  if (extra_views.size() == 1)
    return std::move(extra_views.front());
  auto container = std::make_unique<views::View>();
  container->SetLayoutManager(std::make_unique<views::BoxLayout>(
      views::BoxLayout::Orientation::kHorizontal, gfx::Insets(),
      layout->GetDistanceMetric(views::DISTANCE_RELATED_CONTROL_HORIZONTAL)));
  for (auto& extra_view : extra_views)
    container->AddChildView(std::move(extra_view));
  return container;
}

void ContentSettingBubbleContents::LinkClicked(int row,
                                               const ui::Event& event) {
  DCHECK(content_setting_bubble_model_);
  DCHECK_NE(row, -1);
  content_setting_bubble_model_->OnListItemClicked(row, event);
}

void ContentSettingBubbleContents::CustomLinkClicked() {
  DCHECK(content_setting_bubble_model_);
  content_setting_bubble_model_->OnCustomLinkClicked();
  GetWidget()->Close();
}

void ContentSettingBubbleContents::DidFinishNavigation(
    content::NavigationHandle* navigation_handle) {
  if (!navigation_handle->IsInMainFrame() || !navigation_handle->HasCommitted())
    return;

  // Content settings are based on the main frame, so if it switches then
  // close up shop.
  GetWidget()->Close();
}

void ContentSettingBubbleContents::OnVisibilityChanged(
    content::Visibility visibility) {
  if (visibility == content::Visibility::HIDDEN)
    GetWidget()->Close();
}

void ContentSettingBubbleContents::WebContentsDestroyed() {
  // Destroy the bubble model to ensure that the underlying WebContents outlives
  // it.
  content_setting_bubble_model_->CommitChanges();
  content_setting_bubble_model_.reset();

  // Closing the widget should synchronously hide it (and post a task to delete
  // it). Subsequent event listener methods should not be invoked on hidden
  // widgets.
  GetWidget()->Close();
}

void ContentSettingBubbleContents::OnPerformAction(views::Combobox* combobox) {
  DCHECK(content_setting_bubble_model_);
  MediaComboboxModel* model =
      static_cast<MediaComboboxModel*>(combobox->GetModel());
  content_setting_bubble_model_->OnMediaMenuClicked(
      model->type(), model->GetDevices()[combobox->GetSelectedIndex()].id);
}

BEGIN_METADATA(ContentSettingBubbleContents, views::BubbleDialogDelegateView)
END_METADATA