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// Copyright 2021 The Chromium Authors
// 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/bluetooth_device_credentials_view.h"
#include <algorithm>
#include <string_view>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/strings/string_util.h"
#include "chrome/browser/ui/bluetooth/bluetooth_dialogs.h"
#include "chrome/browser/ui/views/chrome_layout_provider.h"
#include "chrome/grit/generated_resources.h"
#include "components/constrained_window/constrained_window_views.h"
#include "components/vector_icons/vector_icons.h"
#include "device/bluetooth/strings/grit/bluetooth_strings.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/mojom/dialog_button.mojom.h"
#include "ui/base/mojom/ui_base_types.mojom-shared.h"
#include "ui/color/color_id.h"
#include "ui/compositor/layer.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/controls/label.h"
#include "ui/views/layout/flex_layout.h"
using content::BluetoothDelegate;
void ShowBluetoothDeviceCredentialsDialog(
content::WebContents* web_contents,
const std::u16string& device_identifier,
BluetoothDelegate::PairPromptCallback close_callback) {
// This dialog owns itself. DialogDelegateView will delete |dialog| instance.
auto* dialog = new BluetoothDeviceCredentialsView(device_identifier,
std::move(close_callback));
constrained_window::ShowWebModalDialogViews(dialog, web_contents);
}
namespace {
bool IsInputTextValid(std::u16string_view text) {
const size_t num_digits = std::ranges::count_if(
text, [](char16_t ch) { return base::IsAsciiDigit(ch); });
// This dialog is currently only used to prompt for Bluetooth PINs which
// are always six digit numeric values as per the spec. This function could
// do a better job of validating input, but should also be accompanied by
// a better UI to help the user understand why the "OK" button is disabled
// when a seemingly valid PIN, which doesn't conform to the spec., has been
// input.
return num_digits > 0;
}
} // namespace
BluetoothDeviceCredentialsView::BluetoothDeviceCredentialsView(
const std::u16string& device_identifier,
BluetoothDelegate::PairPromptCallback close_callback)
: close_callback_(std::move(close_callback)) {
SetModalType(ui::mojom::ModalType::kChild);
set_margins(ChromeLayoutProvider::Get()->GetDialogInsetsForContentType(
views::DialogContentType::kText, views::DialogContentType::kText));
SetAcceptCallback(
base::BindOnce(&BluetoothDeviceCredentialsView::OnDialogAccepted,
base::Unretained(this)));
auto canceled = [](BluetoothDeviceCredentialsView* dialog) {
std::move(dialog->close_callback_)
.Run(BluetoothDelegate::PairPromptResult(
BluetoothDelegate::PairPromptStatus::kCancelled));
};
SetCancelCallback(base::BindOnce(canceled, base::Unretained(this)));
SetCloseCallback(base::BindOnce(canceled, base::Unretained(this)));
InitControls(device_identifier);
}
BluetoothDeviceCredentialsView::~BluetoothDeviceCredentialsView() = default;
void BluetoothDeviceCredentialsView::InitControls(
const std::u16string& device_identifier) {
//
// Create the following layout:
//
// ┌───────────────┬─────────────────────────────────────────────┐
// │ │ Device passkey │
// │ ┌───────────┐ │ │
// │ │ │ │ Please enter the passkey for <device name>: │
// │ │ Bluetooth │ │ ┌────────────────────────────────────────┐ │
// │ │ icon │ │ │ │ │
// │ │ │ │ └────────────────────────────────────────┘ │
// │ └───────────┘ │ ┌──────┐ ┌────────┐ │
// │ │ │ OK │ │ Cancel │ │
// │ │ └──────┘ └────────┘ │
// └───────────────┴─────────────────────────────────────────────┘
//
SetLayoutManager(std::make_unique<views::FlexLayout>())
->SetCrossAxisAlignment(views::LayoutAlignment::kCenter);
// The vertical space that must exist on the top and the bottom of the item
// to ensure the proper spacing is maintained between items when stacking
// vertically.
const int vertical_spacing = ChromeLayoutProvider::Get()->GetDistanceMetric(
views::DISTANCE_CONTROL_LIST_VERTICAL) /
2;
constexpr int horizontal_spacing = 0;
constexpr int kIconSize = 48; // width and height.
auto icon_view = std::make_unique<views::ImageView>();
icon_view->SetImage(ui::ImageModel::FromVectorIcon(
vector_icons::kBluetoothIcon, ui::kColorIcon, kIconSize));
icon_view_ = AddChildView(std::move(icon_view));
auto contents_wrapper = std::make_unique<views::View>();
contents_wrapper->SetProperty(
views::kMarginsKey,
gfx::Insets::VH(vertical_spacing, horizontal_spacing));
contents_wrapper->SetLayoutManager(std::make_unique<views::FlexLayout>())
->SetOrientation(views::LayoutOrientation::kVertical)
.SetMainAxisAlignment(views::LayoutAlignment::kCenter);
contents_wrapper->SetProperty(
views::kFlexBehaviorKey,
views::FlexSpecification(views::MinimumFlexSizeRule::kScaleToZero,
views::MaximumFlexSizeRule::kUnbounded));
views::Label* passkey_prompt_label_ptr = nullptr;
{
auto passkey_prompt_label =
std::make_unique<views::Label>(l10n_util::GetStringFUTF16(
IDS_BLUETOOTH_DEVICE_CREDENTIALS_LABEL, device_identifier));
passkey_prompt_label_ptr = passkey_prompt_label.get();
passkey_prompt_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
passkey_prompt_label->SetMultiLine(true);
contents_wrapper->AddChildView(std::move(passkey_prompt_label));
}
{
constexpr int kDefaultTextfieldNumChars = 8;
constexpr int kMinimumTextfieldNumChars = 6;
passkey_text_ =
contents_wrapper->AddChildView(std::make_unique<views::Textfield>());
passkey_text_->set_controller(this);
passkey_text_->SetDefaultWidthInChars(kDefaultTextfieldNumChars);
passkey_text_->SetMinimumWidthInChars(kMinimumTextfieldNumChars);
passkey_text_->SetTextInputType(ui::TEXT_INPUT_TYPE_TEXT);
passkey_text_->GetViewAccessibility().SetName(*passkey_prompt_label_ptr);
// TODO(cmumford): Windows Narrator says "no item in view".
}
contents_wrapper_ = AddChildView(std::move(contents_wrapper));
}
views::View* BluetoothDeviceCredentialsView::GetInitiallyFocusedView() {
return passkey_text_;
}
gfx::Size BluetoothDeviceCredentialsView::CalculatePreferredSize(
const views::SizeBounds& available_size) const {
constexpr int kDialogWidth = 360;
int height =
GetLayoutManager()->GetPreferredHeightForWidth(this, kDialogWidth);
return gfx::Size(kDialogWidth, height);
}
bool BluetoothDeviceCredentialsView::IsDialogButtonEnabled(
ui::mojom::DialogButton button) const {
if (button != ui::mojom::DialogButton::kOk) {
return true; // Only "OK" button is sensitized - all others are enabled.
}
return IsInputTextValid(passkey_text_->GetText());
}
std::u16string BluetoothDeviceCredentialsView::GetWindowTitle() const {
return l10n_util::GetStringUTF16(IDS_BLUETOOTH_DEVICE_CREDENTIALS_TITLE);
}
void BluetoothDeviceCredentialsView::OnDialogAccepted() {
DCHECK(IsDialogButtonEnabled(ui::mojom::DialogButton::kOk));
std::u16string trimmed_input;
base::TrimWhitespace(passkey_text_->GetText(), base::TRIM_ALL,
&trimmed_input);
BluetoothDelegate::PairPromptResult result;
result.result_code = BluetoothDelegate::PairPromptStatus::kSuccess;
result.pin = base::UTF16ToUTF8(trimmed_input);
std::move(close_callback_).Run(result);
}
void BluetoothDeviceCredentialsView::ContentsChanged(
views::Textfield* sender,
const std::u16string& new_contents) {
DCHECK_EQ(sender, passkey_text_);
SetButtonEnabled(ui::mojom::DialogButton::kOk,
IsInputTextValid(new_contents));
DialogModelChanged();
}
BEGIN_METADATA(BluetoothDeviceCredentialsView)
END_METADATA
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