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element_tracker_views_unittest.cc
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element_tracker_views_unittest.cc
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// Copyright 2021 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/interaction/element_tracker_views.h"
#include <algorithm>
#include <iterator>
#include <memory>
#include <utility>
#include "base/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/test/bind.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/base/interaction/element_identifier.h"
#include "ui/base/interaction/element_test_util.h"
#include "ui/base/interaction/element_tracker.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/events/base_event_utils.h"
#include "ui/events/event.h"
#include "ui/events/keycodes/dom/dom_code.h"
#include "ui/events/types/event_type.h"
#include "ui/views/controls/button/label_button.h"
#include "ui/views/controls/button/menu_button.h"
#include "ui/views/interaction/interaction_test_util_views.h"
#include "ui/views/test/views_test_base.h"
#include "ui/views/test/widget_test.h"
#include "ui/views/view_class_properties.h"
#include "ui/views/widget/widget.h"
namespace views {
DEFINE_LOCAL_ELEMENT_IDENTIFIER_VALUE(kTestElementID);
DEFINE_LOCAL_ELEMENT_IDENTIFIER_VALUE(kTestElementID2);
DECLARE_CUSTOM_ELEMENT_EVENT_TYPE(kCustomEventType);
DEFINE_CUSTOM_ELEMENT_EVENT_TYPE(kCustomEventType);
namespace {
enum ElementEventType { kShown, kActivated, kHidden, kCustom };
View* ElementToView(ui::TrackedElement* element) {
auto* const view_element = element->AsA<TrackedElementViews>();
return view_element ? view_element->view() : nullptr;
}
// A subclass of View that has metadata.
class TypedView : public View {
public:
METADATA_HEADER(TypedView);
};
BEGIN_METADATA(TypedView, View)
END_METADATA
// Watches events on the ElementTracker and converts the resulting values back
// into Views from the original ui::TrackedElement objects. Monitoring
// callbacks in this way could be done with gmock but the boilerplate would be
// unfortunately complicated (for some events, the correct parameters are not
// known until after the call is made, since the call itself might create the
// element in question). So instead we use this helper class.
class ElementEventWatcher {
public:
// Watches the specified `event_type` on Views with identifier `id` in
// `context`.
ElementEventWatcher(ui::ElementIdentifier id,
ui::ElementContext context,
ElementEventType event_type)
: id_(id), event_type_(event_type) {
auto callback = base::BindRepeating(&ElementEventWatcher::OnEvent,
base::Unretained(this));
ui::ElementTracker* const tracker = ui::ElementTracker::GetElementTracker();
switch (event_type_) {
case ElementEventType::kShown:
subscription_ = tracker->AddElementShownCallback(id, context, callback);
break;
case ElementEventType::kActivated:
subscription_ =
tracker->AddElementActivatedCallback(id, context, callback);
break;
case ElementEventType::kHidden:
subscription_ =
tracker->AddElementHiddenCallback(id, context, callback);
break;
case ElementEventType::kCustom:
subscription_ = tracker->AddCustomEventCallback(id, context, callback);
break;
}
}
int event_count() const { return event_count_; }
View* last_view() { return last_view_; }
private:
void OnEvent(ui::TrackedElement* element) {
if (event_type_ != ElementEventType::kCustom)
EXPECT_EQ(id_, element->identifier());
last_view_ = ElementToView(element);
++event_count_;
}
const ui::ElementIdentifier id_;
const ElementEventType event_type_;
ui::ElementTracker::Subscription subscription_;
int event_count_ = 0;
raw_ptr<View> last_view_ = nullptr;
};
ElementTrackerViews::ViewList ElementsToViews(
ui::ElementTracker::ElementList elements) {
ElementTrackerViews::ViewList result;
std::transform(elements.begin(), elements.end(), std::back_inserter(result),
[](ui::TrackedElement* element) {
return element->AsA<TrackedElementViews>()->view();
});
return result;
}
} // namespace
class ElementTrackerViewsTest : public ViewsTestBase {
public:
ElementTrackerViewsTest() = default;
~ElementTrackerViewsTest() override = default;
void SetUp() override {
ViewsTestBase::SetUp();
widget_ = CreateWidget();
widget_->Show();
}
void TearDown() override {
widget_.reset();
ViewsTestBase::TearDown();
}
ui::ElementContext context() const {
return ui::ElementContext(widget_.get());
}
std::unique_ptr<Widget> CreateWidget() {
auto widget = std::make_unique<Widget>();
Widget::InitParams params =
CreateParams(Widget::InitParams::TYPE_WINDOW_FRAMELESS);
params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
params.bounds = gfx::Rect(0, 0, 650, 650);
widget->Init(std::move(params));
return widget;
}
protected:
std::unique_ptr<Widget> widget_;
};
TEST_F(ElementTrackerViewsTest, ViewShownByAddingToWidgetSendsNotification) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kShown);
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(0, watcher.event_count());
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest,
ViewHiddenByRemovingFromWidgetSendsNotification) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kHidden);
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(0, watcher.event_count());
auto* const view = widget_->SetContentsView(std::make_unique<View>());
auto* const button = view->AddChildView(std::move(button_ptr));
EXPECT_EQ(0, watcher.event_count());
view->RemoveChildViewT(button);
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, ViewShownAfterAddingToWidgetSendsNotification) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kShown);
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetVisible(false);
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(0, watcher.event_count());
button->SetVisible(true);
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest,
ViewHiddenAfterAddingToWidgetSendsNotification) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kHidden);
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(0, watcher.event_count());
button->SetVisible(false);
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, SettingIDOnVisibleViewSendsNotification) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kShown);
auto button_ptr = std::make_unique<LabelButton>();
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(0, watcher.event_count());
button->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, ClearingIDOnVisibleViewSendsNotification) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kHidden);
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(0, watcher.event_count());
button->ClearProperty(kElementIdentifierKey);
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, ChangingIDOnVisibleViewSendsNotification) {
ElementEventWatcher shown(kTestElementID, context(),
ElementEventType::kShown);
ElementEventWatcher hidden(kTestElementID, context(),
ElementEventType::kHidden);
ElementEventWatcher shown2(kTestElementID2, context(),
ElementEventType::kShown);
ElementEventWatcher hidden2(kTestElementID2, context(),
ElementEventType::kHidden);
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(1, shown.event_count());
EXPECT_EQ(0, hidden.event_count());
EXPECT_EQ(0, shown2.event_count());
EXPECT_EQ(0, hidden2.event_count());
button->SetProperty(kElementIdentifierKey, kTestElementID2);
EXPECT_EQ(1, shown.event_count());
EXPECT_EQ(1, hidden.event_count());
EXPECT_EQ(1, shown2.event_count());
EXPECT_EQ(0, hidden2.event_count());
button->SetVisible(false);
EXPECT_EQ(1, shown.event_count());
EXPECT_EQ(1, hidden.event_count());
EXPECT_EQ(1, shown2.event_count());
EXPECT_EQ(1, hidden2.event_count());
}
TEST_F(ElementTrackerViewsTest, ButtonPressedSendsActivatedSignal) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kActivated);
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(0, watcher.event_count());
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(0, watcher.event_count());
// Test mouse click.
constexpr gfx::Point kPressPoint(10, 10);
button->OnMousePressed(ui::MouseEvent(
ui::ET_MOUSE_PRESSED, kPressPoint, kPressPoint, ui::EventTimeForNow(),
ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON));
button->OnMouseReleased(ui::MouseEvent(
ui::ET_MOUSE_PRESSED, kPressPoint, kPressPoint, ui::EventTimeForNow(),
ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON));
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
// Test accessible keypress.
views::test::InteractionTestUtilSimulatorViews::PressButton(button);
EXPECT_EQ(2, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, MenuButtonPressedSendsActivatedSignal) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kActivated);
size_t pressed_count = 0;
auto button_ptr = std::make_unique<MenuButton>(
base::BindLambdaForTesting([&](const ui::Event&) { ++pressed_count; }));
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(0, watcher.event_count());
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(0, watcher.event_count());
// Test mouse click.
constexpr gfx::Point kPressPoint(10, 10);
button->OnMousePressed(ui::MouseEvent(
ui::ET_MOUSE_PRESSED, kPressPoint, kPressPoint, ui::EventTimeForNow(),
ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON));
EXPECT_EQ(1U, pressed_count);
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
// Test accessible keypress.
views::test::InteractionTestUtilSimulatorViews::PressButton(button);
EXPECT_EQ(2U, pressed_count);
EXPECT_EQ(2, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, SendCustomEventWithNamedElement) {
ElementEventWatcher watcher(kCustomEventType, context(),
ElementEventType::kCustom);
auto* const target = widget_->SetContentsView(std::make_unique<View>());
target->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(0, watcher.event_count());
ElementTrackerViews::GetInstance()->NotifyCustomEvent(kCustomEventType,
target);
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(target, watcher.last_view());
// Send an event with a different ID (which happens to be the element's ID;
// this shouldn't happen but we should handle it gracefully).
ElementTrackerViews::GetInstance()->NotifyCustomEvent(kTestElementID, target);
EXPECT_EQ(1, watcher.event_count());
// Send another event.
ElementTrackerViews::GetInstance()->NotifyCustomEvent(kCustomEventType,
target);
EXPECT_EQ(2, watcher.event_count());
EXPECT_EQ(target, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, SendCustomEventWithUnnamedElement) {
ElementEventWatcher watcher(kCustomEventType, context(),
ElementEventType::kCustom);
auto* const target = widget_->SetContentsView(std::make_unique<View>());
// View has no pre-set identifier, but this should still work.
EXPECT_EQ(0, watcher.event_count());
ElementTrackerViews::GetInstance()->NotifyCustomEvent(kCustomEventType,
target);
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(target, watcher.last_view());
// Send an extraneous event.
ElementTrackerViews::GetInstance()->NotifyCustomEvent(kTestElementID, target);
EXPECT_EQ(1, watcher.event_count());
// Send another event.
ElementTrackerViews::GetInstance()->NotifyCustomEvent(kCustomEventType,
target);
EXPECT_EQ(2, watcher.event_count());
EXPECT_EQ(target, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, HandlesCreateWithTheSameIDMultipleTimes) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kShown);
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
widget_->GetRootView()->RemoveChildViewT(button);
button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
auto* const button2 = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(2, watcher.event_count());
EXPECT_EQ(button2, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, HandlesReshowingTheSameView) {
ElementEventWatcher watcher(kTestElementID, context(),
ElementEventType::kShown);
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
auto* const button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(1, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
button->SetVisible(false);
EXPECT_EQ(1, watcher.event_count());
button->SetVisible(true);
EXPECT_EQ(2, watcher.event_count());
EXPECT_EQ(button, watcher.last_view());
}
TEST_F(ElementTrackerViewsTest, CanLookupViewByIdentifier) {
// Should initially be null.
EXPECT_EQ(nullptr, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context()));
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
// Because the button is not attached to a widget, it will not be returned for
// the current context (which is associated with a widget).
EXPECT_EQ(nullptr, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context()));
// Adding the view to a widget will cause it to be returned in the current
// context.
auto* button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(
button,
ElementToView(ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context())));
// Once the view is destroyed, however, the result should be null again.
widget_->GetRootView()->RemoveChildViewT(button);
EXPECT_EQ(nullptr, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context()));
// Create a second view with the same ID and verify that the new pointer is
// returned.
button = widget_->SetContentsView(std::make_unique<LabelButton>());
button->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(
button,
ElementToView(ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context())));
// When the view is deleted, the result once again becomes null.
widget_->GetRootView()->RemoveChildViewT(button);
EXPECT_EQ(nullptr, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, CanLookUpElementByIdentifier) {
// Should initially be null.
EXPECT_EQ(nullptr, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context()));
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
// Because the button is not attached to a widget, it will not be returned for
// the current context (which is associated with a widget).
EXPECT_EQ(nullptr, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context()));
// Adding the view to a widget will cause it to be returned in the current
// context.
auto* button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_EQ(button, ui::ElementTracker::GetElementTracker()
->GetUniqueElement(kTestElementID, context())
->AsA<TrackedElementViews>()
->view());
// Hiding the view will make the view not findable through the base element
// tracker.
button->SetVisible(false);
EXPECT_EQ(nullptr, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context()));
// Showing the view will bring it back.
button->SetVisible(true);
EXPECT_EQ(button, ui::ElementTracker::GetElementTracker()
->GetUniqueElement(kTestElementID, context())
->AsA<TrackedElementViews>()
->view());
// Once the view is destroyed, however, the result should be null again.
widget_->GetRootView()->RemoveChildViewT(button);
EXPECT_EQ(nullptr, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context()));
// Create a second view with the same ID and verify that the new pointer is
// returned.
button = widget_->SetContentsView(std::make_unique<LabelButton>());
button->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(button, ui::ElementTracker::GetElementTracker()
->GetUniqueElement(kTestElementID, context())
->AsA<TrackedElementViews>()
->view());
// When the view is deleted, the result once again becomes null.
widget_->GetRootView()->RemoveChildViewT(button);
EXPECT_EQ(nullptr, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, CanGetFirstViewByIdentifier) {
// Should initially be null.
EXPECT_EQ(nullptr,
ui::ElementTracker::GetElementTracker()->GetFirstMatchingElement(
kTestElementID, context()));
// Add two buttons with the same identifier.
auto* contents = widget_->SetContentsView(std::make_unique<View>());
auto* button = contents->AddChildView(std::make_unique<LabelButton>());
button->SetProperty(kElementIdentifierKey, kTestElementID);
auto* button2 = contents->AddChildView(std::make_unique<LabelButton>());
button2->SetProperty(kElementIdentifierKey, kTestElementID);
// The first button should be returned.
EXPECT_EQ(
button,
ElementToView(
ui::ElementTracker::GetElementTracker()->GetFirstMatchingElement(
kTestElementID, context())));
// Remove the first button. The second should now be returned.
contents->RemoveChildViewT(button);
EXPECT_EQ(
button2,
ElementToView(
ui::ElementTracker::GetElementTracker()->GetFirstMatchingElement(
kTestElementID, context())));
// Remove the second button. There will be no matching views.
contents->RemoveChildViewT(button2);
EXPECT_EQ(nullptr,
ui::ElementTracker::GetElementTracker()->GetFirstMatchingElement(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, CanGetFirstElementByIdentifier) {
// Should initially be null.
EXPECT_EQ(nullptr,
ui::ElementTracker::GetElementTracker()->GetFirstMatchingElement(
kTestElementID, context()));
// Add two buttons with the same identifier.
auto* contents = widget_->SetContentsView(std::make_unique<View>());
auto* button = contents->AddChildView(std::make_unique<LabelButton>());
button->SetProperty(kElementIdentifierKey, kTestElementID);
auto* button2 = contents->AddChildView(std::make_unique<LabelButton>());
button2->SetProperty(kElementIdentifierKey, kTestElementID);
// The first button should be returned.
EXPECT_EQ(button, ui::ElementTracker::GetElementTracker()
->GetFirstMatchingElement(kTestElementID, context())
->AsA<TrackedElementViews>()
->view());
// Set the buttons' visibility; this should change whether the element tracker
// sees them.
button->SetVisible(false);
EXPECT_EQ(button2, ui::ElementTracker::GetElementTracker()
->GetFirstMatchingElement(kTestElementID, context())
->AsA<TrackedElementViews>()
->view());
button2->SetVisible(false);
EXPECT_EQ(nullptr,
ui::ElementTracker::GetElementTracker()->GetFirstMatchingElement(
kTestElementID, context()));
// The second button is now the first to become visible in the base tracker.
button2->SetVisible(true);
button->SetVisible(true);
EXPECT_EQ(button2, ui::ElementTracker::GetElementTracker()
->GetFirstMatchingElement(kTestElementID, context())
->AsA<TrackedElementViews>()
->view());
// Remove the second button. The first should now be returned.
contents->RemoveChildViewT(button2);
EXPECT_EQ(button, ui::ElementTracker::GetElementTracker()
->GetFirstMatchingElement(kTestElementID, context())
->AsA<TrackedElementViews>()
->view());
// Remove the first button. There will be no matching views.
contents->RemoveChildViewT(button);
EXPECT_EQ(nullptr,
ui::ElementTracker::GetElementTracker()->GetFirstMatchingElement(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, CanGetAllViewsByIdentifier) {
// Should initially be empty.
ElementTrackerViews::ViewList expected;
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
// Add two buttons with the same identifier.
auto* contents = widget_->SetContentsView(std::make_unique<View>());
auto* button = contents->AddChildView(std::make_unique<LabelButton>());
button->SetProperty(kElementIdentifierKey, kTestElementID);
auto* button2 = contents->AddChildView(std::make_unique<LabelButton>());
button2->SetProperty(kElementIdentifierKey, kTestElementID);
// All buttons should be returned.
expected = ElementTrackerViews::ViewList{button, button2};
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
// Remove the first button. The second should now be returned.
contents->RemoveChildViewT(button);
expected = ElementTrackerViews::ViewList{button2};
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
// Remove the second button. There will be no matching views.
contents->RemoveChildViewT(button2);
expected.clear();
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
}
TEST_F(ElementTrackerViewsTest, CanGetAllElementsByIdentifier) {
// Should initially be empty.
ElementTrackerViews::ViewList expected;
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
// Add two buttons with the same identifier.
auto* contents = widget_->SetContentsView(std::make_unique<View>());
auto* button = contents->AddChildView(std::make_unique<LabelButton>());
button->SetProperty(kElementIdentifierKey, kTestElementID);
auto* button2 = contents->AddChildView(std::make_unique<LabelButton>());
button2->SetProperty(kElementIdentifierKey, kTestElementID);
// Both buttons should be returned.
expected = ElementTrackerViews::ViewList{button, button2};
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
// Set the buttons' visibility; this should change whether the element tracker
// sees them.
button->SetVisible(false);
expected = ElementTrackerViews::ViewList{button2};
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
button2->SetVisible(false);
expected.clear();
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
// The second button is now the first to become visible in the base tracker.
button2->SetVisible(true);
button->SetVisible(true);
expected = ElementTrackerViews::ViewList{button2, button};
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
// Remove the second button. Only the first should now be returned.
contents->RemoveChildViewT(button2);
expected = ElementTrackerViews::ViewList{button};
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
// Remove the first button. There will be no matching views.
contents->RemoveChildViewT(button);
expected.clear();
EXPECT_EQ(expected,
ElementsToViews(
ui::ElementTracker::GetElementTracker()->GetAllMatchingElements(
kTestElementID, context())));
}
TEST_F(ElementTrackerViewsTest, CanGetVisibilityByIdentifier) {
// Should initially be false.
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
// Because the button is not attached to a widget, it will not be counted as
// visible.
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
// Adding the view to a widget will cause it to be counted as visible.
auto* button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_TRUE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
// Once the view is destroyed, however, the result should be false again.
widget_->GetRootView()->RemoveChildViewT(button);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
// Create a second view with the same ID but start it as not visible.
button = widget_->SetContentsView(std::make_unique<LabelButton>());
button->SetVisible(false);
button->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
// Now set the visibility to true.
button->SetVisible(true);
EXPECT_TRUE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
// Set visibility to false again.
button->SetVisible(false);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, CanLookupElementByView) {
// Should initially be false.
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
auto button_ptr = std::make_unique<LabelButton>();
button_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
// The button is not attached to a widget so there is no associated element
// object.
EXPECT_EQ(nullptr, ElementTrackerViews::GetInstance()->GetElementForView(
button_ptr.get()));
// Adding the (visible) view to a widget will cause an element to be
// generated.
auto* button = widget_->SetContentsView(std::move(button_ptr));
EXPECT_NE(nullptr,
ElementTrackerViews::GetInstance()->GetElementForView(button));
// Once the view is destroyed, however, the result should be false again.
widget_->GetRootView()->RemoveChildView(button);
EXPECT_EQ(nullptr,
ElementTrackerViews::GetInstance()->GetElementForView(button));
delete button;
// Create a second view with the same ID but start it as not visible.
button = widget_->SetContentsView(std::make_unique<LabelButton>());
button->SetVisible(false);
button->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(nullptr,
ElementTrackerViews::GetInstance()->GetElementForView(button));
// Now set the visibility to true.
button->SetVisible(true);
EXPECT_NE(nullptr,
ElementTrackerViews::GetInstance()->GetElementForView(button));
// Set visibility to false again.
button->SetVisible(false);
EXPECT_EQ(nullptr,
ElementTrackerViews::GetInstance()->GetElementForView(button));
}
TEST_F(ElementTrackerViewsTest, AssignTemporaryId) {
auto* button = widget_->SetContentsView(std::make_unique<LabelButton>());
DCHECK(!button->GetProperty(kElementIdentifierKey));
TrackedElementViews* element =
ElementTrackerViews::GetInstance()->GetElementForView(button);
EXPECT_EQ(nullptr, element);
element = ElementTrackerViews::GetInstance()->GetElementForView(button, true);
EXPECT_NE(nullptr, element);
EXPECT_EQ(ui::ElementTracker::kTemporaryIdentifier,
button->GetProperty(kElementIdentifierKey));
EXPECT_EQ(element, ui::ElementTracker::GetElementTracker()->GetUniqueElement(
ui::ElementTracker::kTemporaryIdentifier, context()));
}
// The following tests ensure conformity with the different platforms' Views
// implementation to ensure that Views are reported as visible to the user at
// the correct times, including during Widget close/delete.
TEST_F(ElementTrackerViewsTest, ParentNotVisibleWhenAddedToWidget) {
View* const contents = widget_->SetContentsView(std::make_unique<View>());
contents->SetVisible(false);
auto child_ptr = std::make_unique<View>();
child_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
contents->AddChildView(std::move(child_ptr));
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
contents->SetVisible(true);
EXPECT_TRUE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, WidgetNotVisibleWhenAddedToWidget) {
View* const contents = widget_->SetContentsView(std::make_unique<View>());
widget_->Hide();
auto child_ptr = std::make_unique<View>();
child_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
contents->AddChildView(std::move(child_ptr));
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
widget_->Show();
EXPECT_TRUE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, ParentHidden) {
View* const contents = widget_->SetContentsView(std::make_unique<View>());
auto child_ptr = std::make_unique<View>();
child_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
contents->AddChildView(std::move(child_ptr));
EXPECT_TRUE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
contents->SetVisible(false);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, WidgetHidden) {
View* const contents = widget_->SetContentsView(std::make_unique<View>());
auto child_ptr = std::make_unique<View>();
child_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
contents->AddChildView(std::move(child_ptr));
EXPECT_TRUE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
widget_->Hide();
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, WidgetClosed) {
View* const contents = widget_->SetContentsView(std::make_unique<View>());
auto child_ptr = std::make_unique<View>();
child_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
contents->AddChildView(std::move(child_ptr));
EXPECT_TRUE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
widget_->Close();
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, WidgetDestroyed) {
View* const contents = widget_->SetContentsView(std::make_unique<View>());
auto child_ptr = std::make_unique<View>();
child_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
contents->AddChildView(std::move(child_ptr));
EXPECT_TRUE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
widget_.reset();
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context()));
}
TEST_F(ElementTrackerViewsTest, WidgetShownAfterAdd) {
auto widget = CreateWidget();
View* const contents = widget->SetContentsView(std::make_unique<View>());
const ui::ElementContext context =
ElementTrackerViews::GetContextForView(contents);
auto child_ptr = std::make_unique<View>();
child_ptr->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context));
contents->AddChildView(std::move(child_ptr));
EXPECT_FALSE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context));
widget->Show();
EXPECT_TRUE(ui::ElementTracker::GetElementTracker()->IsElementVisible(
kTestElementID, context));
}
// This is a gross corner case where a Widget might not report IsVisible()
// during show, but we're still showing views and could conceivably add another
// view as part of a callback.
TEST_F(ElementTrackerViewsTest, AddedDuringWidgetShow) {
auto widget = CreateWidget();
View* const contents = widget->SetContentsView(std::make_unique<View>());
View* const child1 = contents->AddChildView(std::make_unique<View>());
View* const child2 = contents->AddChildView(std::make_unique<View>());
child1->SetProperty(kElementIdentifierKey, kTestElementID);
auto subscription =
ui::ElementTracker::GetElementTracker()->AddElementShownCallback(
kTestElementID,
ElementTrackerViews::GetContextForWidget(widget.get()),
base::BindLambdaForTesting([&](ui::TrackedElement*) {
child2->SetProperty(kElementIdentifierKey, kTestElementID2);
}));
bool called = false;
auto subscription2 =
ui::ElementTracker::GetElementTracker()->AddElementShownCallback(
kTestElementID2,
ElementTrackerViews::GetContextForWidget(widget.get()),
base::BindLambdaForTesting([&](ui::TrackedElement* element) {
EXPECT_EQ(child2, element->AsA<TrackedElementViews>()->view());
called = true;
}));
test::WidgetVisibleWaiter visible_waiter(widget.get());
widget->Show();
visible_waiter.Wait();
EXPECT_TRUE(called);
// Now verify that hiding a widget which we engaged during initial Show(),
// without destroying the views, causes the elements to be hidden.
subscription2 =
ui::ElementTracker::GetElementTracker()->AddElementHiddenCallback(
kTestElementID2,
ElementTrackerViews::GetContextForWidget(widget.get()),
base::BindLambdaForTesting([&](ui::TrackedElement* element) {
EXPECT_EQ(child2, element->AsA<TrackedElementViews>()->view());
called = true;
}));
called = false;
widget->Hide();
EXPECT_TRUE(called);
}
TEST_F(ElementTrackerViewsTest, CleansUpWidgetTrackers) {
auto widget1 = CreateWidget();
View* const contents1 = widget1->SetContentsView(std::make_unique<View>());
contents1->SetProperty(kElementIdentifierKey, kTestElementID);
auto widget2 = CreateWidget();
View* const contents2 = widget1->SetContentsView(std::make_unique<View>());
contents2->SetProperty(kElementIdentifierKey, kTestElementID);
test::WidgetVisibleWaiter waiter1(widget1.get());
test::WidgetVisibleWaiter waiter2(widget2.get());
widget1->Show();
widget2->Show();
waiter1.Wait();
waiter2.Wait();
widget1->Hide();
test::WidgetDestroyedWaiter destroyed_waiter(widget2.get());
widget2->Close();
destroyed_waiter.Wait();
EXPECT_TRUE(ElementTrackerViews::GetInstance()->widget_trackers_.empty());
}
TEST_F(ElementTrackerViewsTest, GetUniqueView) {
auto widget = CreateWidget();
View* const contents = widget->SetContentsView(std::make_unique<View>());
widget->Show();
const ui::ElementContext context =
ElementTrackerViews::GetContextForView(contents);
EXPECT_EQ(nullptr, ElementTrackerViews::GetInstance()->GetUniqueView(
kTestElementID, context));
contents->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(contents, ElementTrackerViews::GetInstance()->GetUniqueView(
kTestElementID, context));
contents->ClearProperty(kElementIdentifierKey);
EXPECT_EQ(nullptr, ElementTrackerViews::GetInstance()->GetUniqueView(
kTestElementID, context));
}
TEST_F(ElementTrackerViewsTest, GetUniqueViewAs) {
auto widget = CreateWidget();
TypedView* const contents =
widget->SetContentsView(std::make_unique<TypedView>());
widget->Show();
const ui::ElementContext context =
ElementTrackerViews::GetContextForView(contents);
EXPECT_EQ(nullptr,
ElementTrackerViews::GetInstance()->GetUniqueViewAs<TypedView>(
kTestElementID, context));
contents->SetProperty(kElementIdentifierKey, kTestElementID);
EXPECT_EQ(contents,
ElementTrackerViews::GetInstance()->GetUniqueViewAs<TypedView>(
kTestElementID, context));
contents->ClearProperty(kElementIdentifierKey);
EXPECT_EQ(nullptr,
ElementTrackerViews::GetInstance()->GetUniqueViewAs<TypedView>(
kTestElementID, context));
}
TEST_F(ElementTrackerViewsTest, GetFirstMatchingViewWithSingleView) {
auto widget = CreateWidget();
View* const contents = widget->SetContentsView(std::make_unique<View>());
widget->Show();
const ui::ElementContext context =
ElementTrackerViews::GetContextForView(contents);
EXPECT_EQ(nullptr, ElementTrackerViews::GetInstance()->GetFirstMatchingView(