// 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/controls/page_switcher_view.h"

#include <utility>

#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/views/layout/fill_layout.h"

PageSwitcherView::PageSwitcherView(std::unique_ptr<views::View> initial_page) {
  SetLayoutManager(std::make_unique<views::FillLayout>());
  current_page_ = AddChildView(std::move(initial_page));
}

PageSwitcherView::~PageSwitcherView() = default;

void PageSwitcherView::SwitchToPage(std::unique_ptr<views::View> page) {
  if (current_page_) {
    RemoveChildViewT(std::exchange(current_page_, nullptr));
  }
  current_page_ = AddChildView(std::move(page));
  PreferredSizeChanged();
}

views::View* PageSwitcherView::GetCurrentPage() {
  return current_page_;
}

void PageSwitcherView::ChildPreferredSizeChanged(views::View* child) {
  PreferredSizeChanged();
}

BEGIN_METADATA(PageSwitcherView)
END_METADATA