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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/controls/link_fragment.h"
#include <array>
#include <memory>
#include "base/memory/raw_ptr.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/events/test/event_generator.h"
#include "ui/views/controls/base_control_test_widget.h"
#include "ui/views/controls/focus_ring.h"
#include "ui/views/test/view_metadata_test_utils.h"
#include "ui/views/widget/widget.h"
namespace views {
namespace {
constexpr char16_t kLinkLabel[] = u"Test label";
class LinkFragmentTest : public test::BaseControlTestWidget {
public:
LinkFragmentTest() {
for (auto& fragment : fragments_) {
fragment = nullptr;
}
}
~LinkFragmentTest() override = default;
void SetUp() override {
test::BaseControlTestWidget::SetUp();
event_generator_ = std::make_unique<ui::test::EventGenerator>(
GetContext(), widget()->GetNativeWindow());
}
void TearDown() override {
fragments_.fill(nullptr);
test::BaseControlTestWidget::TearDown();
}
protected:
void CreateWidgetContent(View* container) override {
// Fragment 0 is stand-alone.
fragments_[0] =
container->AddChildView(std::make_unique<LinkFragment>(kLinkLabel));
gfx::Rect current_rect =
gfx::ScaleToEnclosedRect(container->GetLocalBounds(), 0.3f);
fragments_[0]->SetBoundsRect(current_rect);
int width = current_rect.width();
// Fragments 1 and 2 are connected.
current_rect.Offset(width, 0);
fragments_[1] =
container->AddChildView(std::make_unique<LinkFragment>(kLinkLabel));
fragments_[1]->SetBoundsRect(current_rect);
current_rect.Offset(width, 0);
fragments_[2] = container->AddChildView(std::make_unique<LinkFragment>(
kLinkLabel, style::CONTEXT_LABEL, style::STYLE_LINK, fragment(1)));
fragments_[2]->SetBoundsRect(current_rect);
}
LinkFragment* fragment(size_t index) {
DCHECK_LT(index, 3u);
return fragments_[index];
}
ui::test::EventGenerator* event_generator() { return event_generator_.get(); }
// Returns bounds of the fragment.
gfx::Rect GetBoundsForFragment(size_t index) {
return fragment(index)->GetBoundsInScreen();
}
private:
std::array<raw_ptr<LinkFragment>, 3> fragments_;
std::unique_ptr<ui::test::EventGenerator> event_generator_;
};
} // namespace
TEST_F(LinkFragmentTest, Metadata) {
for (size_t index = 0; index < 3; ++index) {
// Needed to avoid failing DCHECK when setting maximum width.
fragment(index)->SetMultiLine(true);
test::TestViewMetadata(fragment(index));
}
}
// Tests that hovering and unhovering a link adds and removes an underline
// under all connected fragments.
TEST_F(LinkFragmentTest, TestUnderlineOnHover) {
// A link fragment should be underlined.
const gfx::Point point_outside =
GetBoundsForFragment(2).bottom_right() + gfx::Vector2d(1, 1);
event_generator()->MoveMouseTo(point_outside);
EXPECT_FALSE(fragment(0)->IsMouseHovered());
const auto is_underlined = [this](size_t index) {
return !!(fragment(index)->font_list().GetFontStyle() &
gfx::Font::UNDERLINE);
};
EXPECT_TRUE(is_underlined(0));
EXPECT_TRUE(is_underlined(1));
EXPECT_TRUE(is_underlined(2));
// A non-hovered link fragment should not be underlined.
fragment(0)->SetForceUnderline(false);
fragment(1)->SetForceUnderline(false);
fragment(2)->SetForceUnderline(false);
EXPECT_FALSE(is_underlined(0));
EXPECT_FALSE(is_underlined(1));
EXPECT_FALSE(is_underlined(2));
// Hovering the first link fragment underlines it.
event_generator()->MoveMouseTo(GetBoundsForFragment(0).CenterPoint());
EXPECT_TRUE(fragment(0)->IsMouseHovered());
EXPECT_TRUE(is_underlined(0));
// The other link fragments stay non-hovered.
EXPECT_FALSE(is_underlined(1));
EXPECT_FALSE(is_underlined(2));
// Un-hovering the link removes the underline again.
event_generator()->MoveMouseTo(point_outside);
EXPECT_FALSE(fragment(0)->IsMouseHovered());
EXPECT_FALSE(is_underlined(0));
EXPECT_FALSE(is_underlined(1));
EXPECT_FALSE(is_underlined(2));
// Hovering the second link fragment underlines both the second and the
// third fragment.
event_generator()->MoveMouseTo(GetBoundsForFragment(1).CenterPoint());
EXPECT_TRUE(fragment(1)->IsMouseHovered());
EXPECT_FALSE(fragment(2)->IsMouseHovered());
EXPECT_FALSE(is_underlined(0));
EXPECT_TRUE(is_underlined(1));
EXPECT_TRUE(is_underlined(2));
// The same is true for hovering the third fragment.
event_generator()->MoveMouseTo(GetBoundsForFragment(2).CenterPoint());
EXPECT_TRUE(fragment(2)->IsMouseHovered());
EXPECT_FALSE(is_underlined(0));
EXPECT_TRUE(is_underlined(1));
EXPECT_TRUE(is_underlined(2));
// Moving outside removes the underline again.
event_generator()->MoveMouseTo(point_outside);
EXPECT_FALSE(is_underlined(0));
EXPECT_FALSE(is_underlined(1));
EXPECT_FALSE(is_underlined(2));
}
// Tests that focusing and unfocusing a link keeps the underline and adds a
// focus ring for all connected fragments.
TEST_F(LinkFragmentTest, TestUnderlineAndFocusRingOnFocus) {
const auto is_underlined = [this](size_t index) {
return !!(fragment(index)->font_list().GetFontStyle() &
gfx::Font::UNDERLINE);
};
// A non-focused link fragment should be underlined.
EXPECT_TRUE(is_underlined(0));
EXPECT_TRUE(is_underlined(1));
EXPECT_TRUE(is_underlined(2));
EXPECT_FALSE(views::FocusRing::Get(fragment(0))->ShouldPaintForTesting());
EXPECT_FALSE(views::FocusRing::Get(fragment(1))->ShouldPaintForTesting());
EXPECT_FALSE(views::FocusRing::Get(fragment(2))->ShouldPaintForTesting());
// Focusing on fragment 0, which is standalone, will only show focus ring for
// that fragment.
fragment(0)->RequestFocus();
EXPECT_TRUE(is_underlined(0));
EXPECT_TRUE(is_underlined(1));
EXPECT_TRUE(is_underlined(2));
EXPECT_TRUE(views::FocusRing::Get(fragment(0))->ShouldPaintForTesting());
EXPECT_FALSE(views::FocusRing::Get(fragment(1))->ShouldPaintForTesting());
EXPECT_FALSE(views::FocusRing::Get(fragment(2))->ShouldPaintForTesting());
// Focusing on fragment 1, which is connected to fragment 2, will focus both
// fragments 1 and 2.
fragment(1)->RequestFocus();
EXPECT_TRUE(is_underlined(0));
EXPECT_TRUE(is_underlined(1));
EXPECT_TRUE(is_underlined(2));
EXPECT_FALSE(views::FocusRing::Get(fragment(0))->ShouldPaintForTesting());
EXPECT_TRUE(views::FocusRing::Get(fragment(1))->ShouldPaintForTesting());
EXPECT_TRUE(views::FocusRing::Get(fragment(2))->ShouldPaintForTesting());
}
} // namespace views
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