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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_VIEWS_WEBAUTHN_MAC_AUTHENTICATION_VIEW_H_
#define CHROME_BROWSER_UI_VIEWS_WEBAUTHN_MAC_AUTHENTICATION_VIEW_H_
#include <memory>
#include <optional>
#include <string>
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "base/timer/timer.h"
#include "chrome/browser/webauthn/local_authentication_token.h"
#include "crypto/scoped_lacontext.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/gfx/geometry/size.h"
#include "ui/views/view.h"
// MacAuthenticationView wraps an `LAAuthenticationView` such that it can be
// used in Views. It shows a biometric UI on macOS that collects Touch ID, and
// then triggers a callback.
class MacAuthenticationView : public views::View {
METADATA_HEADER(MacAuthenticationView, views::View)
public:
using Callback = base::OnceCallback<void(
std::optional<webauthn::LocalAuthenticationToken>)>;
// The callback is called when Touch ID is complete with a boolean that
// indicates whether the operation was successful and if successful, the
// authenticated LAContext.
explicit MacAuthenticationView(Callback callback,
std::u16string touch_id_reason);
~MacAuthenticationView() override;
// views::View:
gfx::Size CalculatePreferredSize(
const views::SizeBounds& available_size) const override;
void Layout(PassKey) override;
void AddedToWidget() override;
void RemovedFromWidget() override;
void OnPaint(gfx::Canvas*) override;
void VisibilityChanged(views::View* from, bool is_visible) override;
private:
struct ObjCStorage;
void OnAuthenticationComplete(bool success);
void OnTouchIDAnimationComplete(bool success);
Callback callback_;
std::unique_ptr<ObjCStorage> storage_;
bool evaluation_requested_ = false;
base::OneShotTimer touch_id_animation_timer_;
const std::u16string touch_id_reason_;
base::WeakPtrFactory<MacAuthenticationView> weak_factory_{this};
};
#endif // CHROME_BROWSER_UI_VIEWS_WEBAUTHN_MAC_AUTHENTICATION_VIEW_H_
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