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// Copyright 2012 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/test/view_event_test_base.h"
#include "base/functional/bind.h"
#include "base/location.h"
#include "base/memory/raw_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "chrome/test/base/chrome_unit_test_suite.h"
#include "chrome/test/base/interactive_test_utils.h"
#include "chrome/test/base/testing_browser_process.h"
#include "mojo/core/embedder/embedder.h"
#include "ui/display/screen.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_delegate.h"
#if defined(USE_AURA) && !BUILDFLAG(IS_CHROMEOS)
#include "ui/views/widget/desktop_aura/desktop_screen.h"
#if BUILDFLAG(IS_LINUX)
#include "ui/views/test/test_desktop_screen_ozone.h"
#endif // BUILDFLAG(IS_LINUX)
#endif // defined(USE_AURA) && !BUILDFLAG(IS_CHROMEOS)
namespace {
// View that keeps its preferred size in sync with what |harness| requests.
class TestView : public views::View {
public:
explicit TestView(ViewEventTestBase* harness) : harness_(harness) {
SetLayoutManager(std::make_unique<views::FillLayout>());
AddChildView(harness_->CreateContentsView());
}
TestView(const TestView&) = delete;
TestView& operator=(const TestView&) = delete;
~TestView() override = default;
gfx::Size CalculatePreferredSize(
const views::SizeBounds& available_size) const override {
return harness_->GetPreferredSizeForContents();
}
private:
raw_ptr<ViewEventTestBase> harness_;
};
} // namespace
class TestBaseWidgetDelegate : public views::WidgetDelegate {
public:
explicit TestBaseWidgetDelegate(ViewEventTestBase* harness)
: harness_(harness) {
SetCanResize(true);
SetOwnedByWidget(OwnedByWidgetPassKey());
}
TestBaseWidgetDelegate(const TestBaseWidgetDelegate&) = delete;
TestBaseWidgetDelegate& operator=(const TestBaseWidgetDelegate&) = delete;
~TestBaseWidgetDelegate() override = default;
// views::WidgetDelegate:
void WindowClosing() override { harness_->window_ = nullptr; }
views::Widget* GetWidget() override {
return contents_ ? contents_->GetWidget() : nullptr;
}
const views::Widget* GetWidget() const override {
return contents_ ? contents_->GetWidget() : nullptr;
}
views::View* GetContentsView() override {
// This will first be called by Widget::Init(), which passes the returned
// View* to SetContentsView(), which takes ownership.
if (!contents_) {
contents_ = new TestView(harness_);
}
return contents_;
}
private:
raw_ptr<ViewEventTestBase> harness_;
raw_ptr<views::View> contents_ = nullptr;
};
ViewEventTestBase::ViewEventTestBase() {
// The TestingBrowserProcess must be created in the constructor because there
// are tests that require it before SetUp() is called.
TestingBrowserProcess::CreateInstance();
// Mojo is initialized here similar to how each browser test case initializes
// Mojo when starting. This only works because each interactive_ui_test runs
// in a new process.
mojo::core::Init();
#if defined(USE_AURA) && !BUILDFLAG(IS_CHROMEOS)
// TODO(pkasting): Determine why the TestScreen in AuraTestHelper is
// insufficient for these tests, then either bolster/replace it or fix the
// tests.
DCHECK(!display::Screen::HasScreen());
#if BUILDFLAG(IS_LINUX)
if (!display::Screen::HasScreen()) {
screen_ = views::test::TestDesktopScreenOzone::Create();
}
#endif // BUILDFLAG(IS_LINUX)
if (!display::Screen::HasScreen()) {
screen_ = views::CreateDesktopScreen();
}
#endif // defined(USE_AURA) && !BUILDFLAG(IS_CHROMEOS)
}
ViewEventTestBase::~ViewEventTestBase() {
TestingBrowserProcess::DeleteInstance();
}
void ViewEventTestBase::SetUpTestSuite() {
ChromeUnitTestSuite::InitializeProviders();
ChromeUnitTestSuite::InitializeResourceBundle();
}
void ViewEventTestBase::SetUp() {
ChromeViewsTestBase::SetUp();
test_views_delegate()->set_use_desktop_native_widgets(true);
window_ = AllocateTestWidget().release();
window_->Init(
CreateParams(views::Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET,
views::Widget::InitParams::TYPE_WINDOW));
window_->Show();
}
void ViewEventTestBase::TearDown() {
if (window_) {
window_->Close();
base::RunLoop().RunUntilIdle();
}
ChromeViewsTestBase::TearDown();
}
views::Widget::InitParams ViewEventTestBase::CreateParams(
views::Widget::InitParams::Ownership ownership,
views::Widget::InitParams::Type type) {
views::Widget::InitParams params =
ChromeViewsTestBase::CreateParams(ownership, type);
params.delegate = new TestBaseWidgetDelegate(this); // Owns itself.
return params;
}
gfx::Size ViewEventTestBase::GetPreferredSizeForContents() const {
return gfx::Size();
}
void ViewEventTestBase::Done() {
drag_event_thread_.reset();
run_loop_.Quit();
}
void ViewEventTestBase::StartMessageLoopAndRunTest() {
ASSERT_TRUE(
ui_test_utils::ShowAndFocusNativeWindow(window_->GetNativeWindow()));
// Flush any pending events to make sure we start with a clean slate.
base::RunLoop().RunUntilIdle();
// Schedule a task that starts the test. Need to do this as we're going to
// run the message loop.
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(&ViewEventTestBase::DoTestOnMessageLoop,
base::Unretained(this)));
run_loop_.Run();
}
void ViewEventTestBase::RunTestMethod(base::OnceClosure task) {
std::move(task).Run();
if (HasFatalFailure()) {
Done();
}
}
scoped_refptr<base::SingleThreadTaskRunner>
ViewEventTestBase::GetDragTaskRunner() {
#if BUILDFLAG(IS_WIN)
// Drag events must be posted from a background thread, since starting a drag
// triggers a nested message loop that filters messages other than mouse
// events, so further tasks on the main message loop will be blocked.
if (!drag_event_thread_) {
drag_event_thread_ = std::make_unique<base::Thread>("drag-event-thread");
drag_event_thread_->Start();
}
return drag_event_thread_->task_runner();
#else
// Drag events must be posted from the current thread, since UI events on many
// platforms cannot be posted from background threads. The nested drag
// message loop on non-Windows does not filter out non-input events, so these
// tasks will run.
return base::SingleThreadTaskRunner::GetCurrentDefault();
#endif
}
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