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// Copyright 2025 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/frame/multi_contents_drop_target_view.h"
#include "base/memory/raw_ptr.h"
#include "chrome/app/vector_icons/vector_icons.h"
#include "chrome/browser/ui/ui_features.h"
#include "ui/base/dragdrop/drag_drop_types.h"
#include "ui/base/dragdrop/os_exchange_data.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/color/color_provider.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_tree_owner.h"
#include "ui/compositor/layer_type.h"
#include "ui/events/event_constants.h"
#include "ui/gfx/animation/slide_animation.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/favicon_size.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/image/image_skia_operations.h"
#include "ui/gfx/paint_vector_icon.h"
#include "ui/resources/grit/ui_resources.h"
#include "ui/views/animation/flood_fill_ink_drop_ripple.h"
#include "ui/views/background.h"
#include "ui/views/border.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/layout/flex_layout.h"
#include "ui/views/view.h"
#include "ui/views/view_constants.h"
#include "ui/views/view_utils.h"
namespace {
constexpr float kInnerCornerRadius = 6;
constexpr int kOuterPadding = 8;
constexpr int kIconSize = 24;
constexpr int kAnimationDurationMs = 450;
} // namespace
DEFINE_CLASS_ELEMENT_IDENTIFIER_VALUE(MultiContentsDropTargetView,
kMultiContentsDropTargetElementId);
MultiContentsDropTargetView::MultiContentsDropTargetView(
DropDelegate& drop_delegate)
: views::AnimationDelegateViews(this), drop_delegate_(drop_delegate) {
SetVisible(false);
SetProperty(views::kElementIdentifierKey, kMultiContentsDropTargetElementId);
SetLayoutManager(std::make_unique<views::FlexLayout>())
->SetOrientation(views::LayoutOrientation::kVertical)
.SetMainAxisAlignment(views::LayoutAlignment::kCenter)
.SetCrossAxisAlignment(views::LayoutAlignment::kCenter)
.SetInteriorMargin(gfx::Insets(kOuterPadding))
.SetDefault(
views::kFlexBehaviorKey,
views::FlexSpecification(views::MinimumFlexSizeRule::kScaleToZero,
views::MaximumFlexSizeRule::kUnbounded));
SetBackground(views::CreateSolidBackground(ui::kColorPrimaryBackground));
auto inner_container = std::make_unique<views::View>();
inner_container->SetBackground(views::CreateRoundedRectBackground(
ui::kColorSysSurface3, kInnerCornerRadius));
inner_container->SetLayoutManager(std::make_unique<views::FlexLayout>())
->SetOrientation(views::LayoutOrientation::kVertical)
.SetMainAxisAlignment(views::LayoutAlignment::kCenter)
.SetCrossAxisAlignment(views::LayoutAlignment::kCenter)
.SetInteriorMargin(
gfx::Insets(features::kSideBySideDropTargetInnerPadding.Get()))
.SetDefault(
views::kFlexBehaviorKey,
views::FlexSpecification(views::MinimumFlexSizeRule::kScaleToZero,
views::MaximumFlexSizeRule::kUnbounded));
icon_view_ =
inner_container->AddChildView(std::make_unique<views::ImageView>());
inner_container_ = AddChildView(std::move(inner_container));
animation_.SetTweenType(gfx::Tween::Type::EASE_IN_OUT_EMPHASIZED);
animation_.SetSlideDuration(base::Milliseconds(kAnimationDurationMs));
}
MultiContentsDropTargetView::~MultiContentsDropTargetView() = default;
double MultiContentsDropTargetView::GetAnimationValue() const {
if (ShouldShowAnimation()) {
return animation_.GetCurrentValue();
}
return 1;
}
bool MultiContentsDropTargetView::IsClosing() const {
return animation_.IsClosing();
}
int MultiContentsDropTargetView::GetPreferredWidth() const {
if (!GetVisible()) {
return 0;
}
return GetAnimationValue() * GetPreferredSize().width();
}
void MultiContentsDropTargetView::AnimationProgressed(
const gfx::Animation* animation) {
InvalidateLayout();
}
void MultiContentsDropTargetView::AnimationEnded(
const gfx::Animation* animation) {
if (animation->GetCurrentValue() == 0) {
SetVisible(false);
}
InvalidateLayout();
}
void MultiContentsDropTargetView::Show(DropSide side) {
side_ = side;
UpdateVisibility(true);
}
void MultiContentsDropTargetView::Hide() {
UpdateVisibility(false);
}
void MultiContentsDropTargetView::SetVisible(bool visible) {
if (!visible) {
side_.reset();
}
views::View::SetVisible(visible);
}
void MultiContentsDropTargetView::UpdateVisibility(bool should_be_open) {
if (ShouldShowAnimation()) {
if (should_be_open) {
SetVisible(should_be_open);
animation_.Show();
} else if (GetVisible() && !IsClosing()) {
animation_.Hide();
}
} else {
animation_.Reset(should_be_open ? 1 : 0);
SetVisible(should_be_open);
}
}
bool MultiContentsDropTargetView::ShouldShowAnimation() const {
return gfx::Animation::ShouldRenderRichAnimation();
}
void MultiContentsDropTargetView::OnThemeChanged() {
views::View::OnThemeChanged();
SkColor primary_color = GetColorProvider()->GetColor(ui::kColorSysPrimary);
ui::ImageModel icon_image_model =
ui::ImageModel::FromVectorIcon(kAddCircleIcon, primary_color, kIconSize);
icon_view_->SetImage(icon_image_model);
}
bool MultiContentsDropTargetView::GetDropFormats(
int* formats,
std::set<ui::ClipboardFormatType>* format_types) {
*formats = ui::OSExchangeData::URL;
format_types->insert(ui::ClipboardFormatType::UrlType());
return true;
}
// Allows dropping links only.
bool MultiContentsDropTargetView::CanDrop(const OSExchangeData& data) {
if (!data.HasURL(ui::FilenameToURLPolicy::CONVERT_FILENAMES)) {
return false;
}
auto urls = data.GetURLs(ui::FilenameToURLPolicy::CONVERT_FILENAMES);
return urls.has_value() && !urls.value().empty();
}
int MultiContentsDropTargetView::OnDragUpdated(
const ui::DropTargetEvent& event) {
return ui::DragDropTypes::DRAG_LINK;
}
void MultiContentsDropTargetView::OnDragExited() {
Hide();
}
void MultiContentsDropTargetView::OnDragDone() {
Hide();
}
views::View::DropCallback MultiContentsDropTargetView::GetDropCallback(
const ui::DropTargetEvent& event) {
return base::BindOnce(&MultiContentsDropTargetView::DoDrop,
base::Unretained(this));
}
void MultiContentsDropTargetView::DoDrop(
const ui::DropTargetEvent& event,
ui::mojom::DragOperation& output_drag_op,
std::unique_ptr<ui::LayerTreeOwner> drag_image_layer_owner) {
CHECK(side_.has_value());
DropSide side = side_.value();
Hide();
auto urls = event.data().GetURLs(ui::FilenameToURLPolicy::CONVERT_FILENAMES);
CHECK(urls.has_value());
drop_delegate_->HandleLinkDrop(side, urls.value());
}
BEGIN_METADATA(MultiContentsDropTargetView)
END_METADATA
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