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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.
#include "chrome/browser/ui/views/media_preview/scroll_media_preview.h"
#include "chrome/browser/ui/views/chrome_layout_provider.h"
#include "chrome/browser/ui/views/media_preview/media_view.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/gfx/geometry/rounded_corners_f.h"
#include "ui/views/controls/scroll_view.h"
#include "ui/views/controls/scrollbar/overlay_scroll_bar.h"
#include "ui/views/view.h"
#include "ui/views/view_class_properties.h"
namespace scroll_media_preview {
namespace {
// Currently basing this off what extension menu as well as chrome labs bubble
// uses for sizing as suggested as an initial fix by UI.
// TODO(b/324500642): Consider making this dynamic and handled by views. Ideally
// we wouldn't ever pop up so that they pop outside the screen.
constexpr int kMaxScrollViewHeight = 400;
class ScrollViewAndObserver : public views::ScrollView,
public views::ViewObserver {
METADATA_HEADER(ScrollViewAndObserver, views::ScrollView)
public:
ScrollViewAndObserver()
: views::ScrollView((ScrollView::ScrollWithLayers::kEnabled)) {}
ScrollViewAndObserver(const ScrollViewAndObserver&) = delete;
ScrollViewAndObserver& operator=(const ScrollViewAndObserver&) = delete;
~ScrollViewAndObserver() override {
if (contents()) {
contents()->RemoveObserver(this);
}
}
void ObserveContents() {
if (contents()) {
contents()->AddObserver(this);
}
}
// ViewObserver override:
void OnViewPreferredSizeChanged(View* observed_view) override {
PreferredSizeChanged();
}
};
BEGIN_METADATA(ScrollViewAndObserver)
END_METADATA
} // namespace
views::View* CreateScrollViewAndGetContents(views::View& parent_view,
std::optional<size_t> index) {
auto* scroll_view =
parent_view.AddChildViewAt(std::make_unique<ScrollViewAndObserver>(),
index.value_or(parent_view.children().size()));
auto* contents = scroll_view->SetContents(std::make_unique<MediaView>());
scroll_view->ObserveContents();
scroll_view->SetHorizontalScrollBarMode(
views::ScrollView::ScrollBarMode::kDisabled);
scroll_view->SetVerticalScrollBar(std::make_unique<views::OverlayScrollBar>(
views::ScrollBar::Orientation::kVertical));
scroll_view->SetDrawOverflowIndicator(false);
const int kRoundedRadius = ChromeLayoutProvider::Get()->GetCornerRadiusMetric(
views::ShapeContextTokens::kOmniboxExpandedRadius);
scroll_view->SetViewportRoundedCornerRadius(
gfx::RoundedCornersF(kRoundedRadius));
scroll_view->ClipHeightTo(0, kMaxScrollViewHeight);
return contents;
}
} // namespace scroll_media_preview
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