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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/public/cpp/test/shell_test_api.h"
#include "ash/wm/tablet_mode/tablet_mode_controller_test_api.h"
#include "base/containers/contains.h"
#include "base/path_service.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "chrome/test/base/ui_test_utils.h"
#include "content/public/browser/render_widget_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_base.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/hit_test_region_observer.h"
#include "net/dns/mock_host_resolver.h"
#include "ui/aura/window.h"
#include "ui/display/screen.h"
#include "ui/events/test/event_generator.h"
#include "ui/events/types/event_type.h"
namespace {
// The class to record received gesture events and key events to verify if back
// gesture has been performed.
class BackGestureEventRecorder : public ui::EventHandler {
public:
BackGestureEventRecorder() = default;
BackGestureEventRecorder(const BackGestureEventRecorder&) = delete;
BackGestureEventRecorder& operator=(const BackGestureEventRecorder&) = delete;
~BackGestureEventRecorder() override = default;
// ui::EventHandler:
void OnGestureEvent(ui::GestureEvent* event) override {
received_event_types_.insert(event->type());
if (wait_for_event_ == event->type() && run_loop_) {
run_loop_->Quit();
wait_for_event_ = ui::EventType::kUnknown;
}
}
void OnKeyEvent(ui::KeyEvent* event) override {
// If back gesture can be performed, a ui::VKEY_BROWSR_BACK key pressed and
// key released will be generated.
received_event_types_.insert(event->type());
}
void WaitUntilReceivedGestureEvent(ui::EventType event_type) {
wait_for_event_ = event_type;
run_loop_ = std::make_unique<base::RunLoop>();
run_loop_->Run();
}
bool HasReceivedEvent(ui::EventType event_type) {
return base::Contains(received_event_types_, event_type);
}
void Reset() {
received_event_types_.clear();
wait_for_event_ = ui::EventType::kUnknown;
if (run_loop_) {
run_loop_->Quit();
}
}
private:
// Stores the event types of the received gesture events.
base::flat_set<ui::EventType> received_event_types_;
ui::EventType wait_for_event_ = ui::EventType::kUnknown;
std::unique_ptr<base::RunLoop> run_loop_;
};
} // namespace
class BackGestureBrowserTest : public InProcessBrowserTest {
public:
BackGestureBrowserTest() = default;
BackGestureBrowserTest(const BackGestureBrowserTest&) = delete;
BackGestureBrowserTest& operator=(const BackGestureBrowserTest&) = delete;
~BackGestureBrowserTest() override = default;
void SetUpOnMainThread() override {
InProcessBrowserTest::SetUpOnMainThread();
host_resolver()->AddRule("*", "127.0.0.1");
base::FilePath test_data_dir;
ASSERT_TRUE(
base::PathService::Get(base::DIR_SRC_TEST_DATA_ROOT, &test_data_dir));
embedded_test_server()->ServeFilesFromDirectory(
test_data_dir.AppendASCII("chrome/test/data/ash/back_gesture"));
ASSERT_TRUE(embedded_test_server()->Start());
// Enter tablet mode.
ash::TabletModeControllerTestApi().EnterTabletMode();
ASSERT_TRUE(display::Screen::GetScreen()->InTabletMode());
}
content::RenderWidgetHost* GetRenderWidgetHost() {
return browser()
->tab_strip_model()
->GetActiveWebContents()
->GetRenderWidgetHostView()
->GetRenderWidgetHost();
}
// Navigate to |url| and wait until browser thread is synchronized with render
// thread. It's needed so that the touch action is correctly initialized.
void NavigateToURLAndWaitForMainFrame(const GURL& url) {
ASSERT_TRUE(ui_test_utils::NavigateToURL(browser(), url));
content::MainThreadFrameObserver frame_observer(GetRenderWidgetHost());
frame_observer.Wait();
}
};
// Test back gesture behavior with different touch actions.
IN_PROC_BROWSER_TEST_F(BackGestureBrowserTest, TouchActions) {
// Navigate to a page with {touch-action: none} defined.
NavigateToURLAndWaitForMainFrame(
embedded_test_server()->GetURL("/page_touch_action_none.html"));
ASSERT_EQ(browser()->tab_strip_model()->count(), 1);
aura::Window* browser_window = browser()->window()->GetNativeWindow();
const gfx::Rect bounds = browser()->window()->GetBounds();
const gfx::Point start_point = bounds.left_center();
const gfx::Point end_point =
gfx::Point(start_point.x() + 200, start_point.y());
BackGestureEventRecorder recorder;
browser_window->AddPreTargetHandler(&recorder);
ui::test::EventGenerator event_generator(browser_window->GetRootWindow(),
browser_window);
event_generator.set_current_screen_location(start_point);
event_generator.PressTouch();
event_generator.MoveTouch(end_point);
event_generator.ReleaseTouch();
recorder.WaitUntilReceivedGestureEvent(ui::EventType::kGestureEnd);
// BackGestureEventHandler did not handle gesture scroll events, so |recorder|
// should be able to get the scroll events.
EXPECT_TRUE(recorder.HasReceivedEvent(ui::EventType::kGestureTapDown));
EXPECT_TRUE(recorder.HasReceivedEvent(ui::EventType::kGestureScrollBegin));
EXPECT_TRUE(recorder.HasReceivedEvent(ui::EventType::kGestureScrollUpdate));
EXPECT_TRUE(recorder.HasReceivedEvent(ui::EventType::kGestureScrollEnd) ||
recorder.HasReceivedEvent(ui::EventType::kScrollFlingStart));
// ui::VKEY_BROWSR_BACK key pressed and key released will not be generated
// because back operation is not performed.
EXPECT_FALSE(recorder.HasReceivedEvent(ui::EventType::kKeyPressed));
EXPECT_FALSE(recorder.HasReceivedEvent(ui::EventType::kKeyReleased));
recorder.Reset();
// Now navigate to a page with {touch-action: auto} defined.
NavigateToURLAndWaitForMainFrame(
embedded_test_server()->GetURL("/page_touch_action_auto.html"));
event_generator.set_current_screen_location(start_point);
event_generator.PressTouch();
event_generator.MoveTouch(end_point);
event_generator.ReleaseTouch();
recorder.WaitUntilReceivedGestureEvent(ui::EventType::kGestureEnd);
// BackGestureEventHandler has handled gesture scroll events, so |recorder|
// should not be able to get the scroll events.
EXPECT_FALSE(recorder.HasReceivedEvent(ui::EventType::kGestureTapDown));
EXPECT_FALSE(recorder.HasReceivedEvent(ui::EventType::kGestureScrollBegin));
EXPECT_FALSE(recorder.HasReceivedEvent(ui::EventType::kGestureScrollUpdate));
EXPECT_FALSE(recorder.HasReceivedEvent(ui::EventType::kGestureScrollEnd));
EXPECT_FALSE(recorder.HasReceivedEvent(ui::EventType::kScrollFlingStart));
// ui::VKEY_BROWSR_BACK key pressed and key released will be generated because
// back operation can be performed.
EXPECT_TRUE(recorder.HasReceivedEvent(ui::EventType::kKeyPressed));
EXPECT_TRUE(recorder.HasReceivedEvent(ui::EventType::kKeyReleased));
browser_window->RemovePreTargetHandler(&recorder);
}
// Test the back gesture behavior on page that has prevented default touch
// behavior.
IN_PROC_BROWSER_TEST_F(BackGestureBrowserTest, PreventDefault) {
NavigateToURLAndWaitForMainFrame(
embedded_test_server()->GetURL("/page_prevent_default.html"));
ASSERT_EQ(browser()->tab_strip_model()->count(), 1);
aura::Window* browser_window = browser()->window()->GetNativeWindow();
const gfx::Rect bounds = browser()->window()->GetBounds();
BackGestureEventRecorder recorder;
browser_window->AddPreTargetHandler(&recorder);
// Start drag on the page that prevents default touch behavior.
const gfx::Point start_point = bounds.left_center();
const gfx::Point end_point =
gfx::Point(start_point.x() + 200, start_point.y());
ui::test::EventGenerator event_generator(browser_window->GetRootWindow(),
browser_window);
event_generator.set_current_screen_location(start_point);
event_generator.PressTouch();
event_generator.MoveTouch(end_point);
event_generator.ReleaseTouch();
recorder.WaitUntilReceivedGestureEvent(ui::EventType::kGestureEnd);
// ui::VKEY_BROWSR_BACK key pressed and key released will not be generated
// because back operation is not performed.
EXPECT_FALSE(recorder.HasReceivedEvent(ui::EventType::kKeyPressed));
EXPECT_FALSE(recorder.HasReceivedEvent(ui::EventType::kKeyReleased));
browser_window->RemovePreTargetHandler(&recorder);
}
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