blob: 06b6fce8c2b339a31de7d707faa48f2fb2008672 [file] [log] [blame]
// Copyright (c) 2012 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 "ash/wm/system_gesture_event_filter.h"
#include <vector>
#include "ash/accelerators/accelerator_controller.h"
#include "ash/display/display_manager.h"
#include "ash/shelf/shelf.h"
#include "ash/shelf/shelf_model.h"
#include "ash/shell.h"
#include "ash/system/tray/system_tray_delegate.h"
#include "ash/test/ash_test_base.h"
#include "ash/test/display_manager_test_api.h"
#include "ash/test/shell_test_api.h"
#include "ash/test/test_shelf_delegate.h"
#include "ash/wm/gestures/long_press_affordance_handler.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_util.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "ui/aura/env.h"
#include "ui/aura/test/event_generator.h"
#include "ui/aura/test/test_window_delegate.h"
#include "ui/aura/test/test_windows.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/base/hit_test.h"
#include "ui/events/event.h"
#include "ui/events/event_handler.h"
#include "ui/events/event_utils.h"
#include "ui/events/gestures/gesture_configuration.h"
#include "ui/events/test/test_event_handler.h"
#include "ui/gfx/screen.h"
#include "ui/gfx/size.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_delegate.h"
#include "ui/views/window/non_client_view.h"
#include "ui/views/window/window_button_order_provider.h"
namespace ash {
namespace test {
namespace {
class ResizableWidgetDelegate : public views::WidgetDelegateView {
public:
ResizableWidgetDelegate() {}
virtual ~ResizableWidgetDelegate() {}
private:
virtual bool CanResize() const OVERRIDE { return true; }
virtual bool CanMaximize() const OVERRIDE { return true; }
virtual void DeleteDelegate() OVERRIDE { delete this; }
DISALLOW_COPY_AND_ASSIGN(ResizableWidgetDelegate);
};
// Support class for testing windows with a maximum size.
class MaxSizeNCFV : public views::NonClientFrameView {
public:
MaxSizeNCFV() {}
private:
virtual gfx::Size GetMaximumSize() const OVERRIDE {
return gfx::Size(200, 200);
}
virtual gfx::Rect GetBoundsForClientView() const OVERRIDE {
return gfx::Rect();
};
virtual gfx::Rect GetWindowBoundsForClientBounds(
const gfx::Rect& client_bounds) const OVERRIDE {
return gfx::Rect();
};
// This function must ask the ClientView to do a hittest. We don't do this in
// the parent NonClientView because that makes it more difficult to calculate
// hittests for regions that are partially obscured by the ClientView, e.g.
// HTSYSMENU.
virtual int NonClientHitTest(const gfx::Point& point) OVERRIDE {
return HTNOWHERE;
}
virtual void GetWindowMask(const gfx::Size& size,
gfx::Path* window_mask) OVERRIDE {}
virtual void ResetWindowControls() OVERRIDE {}
virtual void UpdateWindowIcon() OVERRIDE {}
virtual void UpdateWindowTitle() OVERRIDE {}
DISALLOW_COPY_AND_ASSIGN(MaxSizeNCFV);
};
class MaxSizeWidgetDelegate : public views::WidgetDelegateView {
public:
MaxSizeWidgetDelegate() {}
virtual ~MaxSizeWidgetDelegate() {}
private:
virtual bool CanResize() const OVERRIDE { return true; }
virtual bool CanMaximize() const OVERRIDE { return false; }
virtual void DeleteDelegate() OVERRIDE { delete this; }
virtual views::NonClientFrameView* CreateNonClientFrameView(
views::Widget* widget) OVERRIDE {
return new MaxSizeNCFV;
}
DISALLOW_COPY_AND_ASSIGN(MaxSizeWidgetDelegate);
};
} // namespace
class SystemGestureEventFilterTest : public AshTestBase {
public:
SystemGestureEventFilterTest() : AshTestBase() {}
virtual ~SystemGestureEventFilterTest() {}
LongPressAffordanceHandler* GetLongPressAffordance() {
ShellTestApi shell_test(Shell::GetInstance());
return shell_test.system_gesture_event_filter()->
long_press_affordance_.get();
}
base::OneShotTimer<LongPressAffordanceHandler>*
GetLongPressAffordanceTimer() {
return &GetLongPressAffordance()->timer_;
}
aura::Window* GetLongPressAffordanceTarget() {
return GetLongPressAffordance()->tap_down_target_;
}
views::View* GetLongPressAffordanceView() {
return reinterpret_cast<views::View*>(
GetLongPressAffordance()->view_.get());
}
// Overridden from AshTestBase:
virtual void SetUp() OVERRIDE {
// TODO(jonross): TwoFingerDragDelayed() and ThreeFingerGestureStopsDrag()
// both use hardcoded touch points, assuming that they target empty header
// space. Window control order now reflects configuration files and can
// change. The tests should be improved to dynamically decide touch points.
// To address this we specify the originally expected window control
// positions to be consistent across tests.
std::vector<views::FrameButton> leading;
std::vector<views::FrameButton> trailing;
trailing.push_back(views::FRAME_BUTTON_MINIMIZE);
trailing.push_back(views::FRAME_BUTTON_MAXIMIZE);
trailing.push_back(views::FRAME_BUTTON_CLOSE);
views::WindowButtonOrderProvider::GetInstance()->
SetWindowButtonOrder(leading, trailing);
test::AshTestBase::SetUp();
// Enable brightness key.
test::DisplayManagerTestApi(Shell::GetInstance()->display_manager()).
SetFirstDisplayAsInternalDisplay();
}
private:
DISALLOW_COPY_AND_ASSIGN(SystemGestureEventFilterTest);
};
ui::GestureEvent* CreateGesture(ui::EventType type,
int x,
int y,
float delta_x,
float delta_y,
int touch_id) {
ui::GestureEventDetails details =
ui::GestureEventDetails(type, delta_x, delta_y);
details.set_oldest_touch_id(touch_id);
return new ui::GestureEvent(x, y, 0,
base::TimeDelta::FromMilliseconds(base::Time::Now().ToDoubleT() * 1000),
ui::GestureEventDetails(type, delta_x, delta_y));
}
TEST_F(SystemGestureEventFilterTest, LongPressAffordanceStateOnCaptureLoss) {
aura::Window* root_window = Shell::GetPrimaryRootWindow();
aura::test::TestWindowDelegate delegate;
scoped_ptr<aura::Window> window0(
aura::test::CreateTestWindowWithDelegate(
&delegate, 9, gfx::Rect(0, 0, 100, 100), root_window));
scoped_ptr<aura::Window> window1(
aura::test::CreateTestWindowWithDelegate(
&delegate, 10, gfx::Rect(0, 0, 100, 50), window0.get()));
scoped_ptr<aura::Window> window2(
aura::test::CreateTestWindowWithDelegate(
&delegate, 11, gfx::Rect(0, 50, 100, 50), window0.get()));
const int kTouchId = 5;
// Capture first window.
window1->SetCapture();
EXPECT_TRUE(window1->HasCapture());
// Send touch event to first window.
ui::TouchEvent press(ui::ET_TOUCH_PRESSED,
gfx::Point(10, 10),
kTouchId,
ui::EventTimeForNow());
ui::EventDispatchDetails details =
root_window->GetHost()->dispatcher()->OnEventFromSource(&press);
ASSERT_FALSE(details.dispatcher_destroyed);
EXPECT_TRUE(window1->HasCapture());
base::OneShotTimer<LongPressAffordanceHandler>* timer =
GetLongPressAffordanceTimer();
EXPECT_TRUE(timer->IsRunning());
EXPECT_EQ(window1, GetLongPressAffordanceTarget());
// Force timeout so that the affordance animation can start.
timer->user_task().Run();
timer->Stop();
EXPECT_TRUE(GetLongPressAffordance()->is_animating());
// Change capture.
window2->SetCapture();
EXPECT_TRUE(window2->HasCapture());
EXPECT_TRUE(GetLongPressAffordance()->is_animating());
EXPECT_EQ(window1, GetLongPressAffordanceTarget());
// Animate to completion.
GetLongPressAffordance()->End(); // end grow animation.
// Force timeout to start shrink animation.
EXPECT_TRUE(timer->IsRunning());
timer->user_task().Run();
timer->Stop();
EXPECT_TRUE(GetLongPressAffordance()->is_animating());
GetLongPressAffordance()->End(); // end shrink animation.
// Check if state has reset.
EXPECT_EQ(NULL, GetLongPressAffordanceTarget());
EXPECT_EQ(NULL, GetLongPressAffordanceView());
}
TEST_F(SystemGestureEventFilterTest, TwoFingerDrag) {
gfx::Rect bounds(0, 0, 600, 600);
aura::Window* root_window = Shell::GetPrimaryRootWindow();
views::Widget* toplevel = views::Widget::CreateWindowWithContextAndBounds(
new ResizableWidgetDelegate, root_window, bounds);
toplevel->Show();
const int kSteps = 15;
const int kTouchPoints = 2;
gfx::Point points[kTouchPoints] = {
gfx::Point(250, 250),
gfx::Point(350, 350),
};
aura::test::EventGenerator generator(root_window,
toplevel->GetNativeWindow());
wm::WindowState* toplevel_state =
wm::GetWindowState(toplevel->GetNativeWindow());
// Swipe down to minimize.
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, 0, 150);
EXPECT_TRUE(toplevel_state->IsMinimized());
toplevel->Restore();
toplevel->GetNativeWindow()->SetBounds(bounds);
// Swipe up to maximize.
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, 0, -150);
EXPECT_TRUE(toplevel_state->IsMaximized());
toplevel->Restore();
toplevel->GetNativeWindow()->SetBounds(bounds);
// Swipe right to snap.
gfx::Rect normal_bounds = toplevel->GetWindowBoundsInScreen();
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, 150, 0);
gfx::Rect right_tile_bounds = toplevel->GetWindowBoundsInScreen();
EXPECT_NE(normal_bounds.ToString(), right_tile_bounds.ToString());
// Swipe left to snap.
gfx::Point left_points[kTouchPoints];
for (int i = 0; i < kTouchPoints; ++i) {
left_points[i] = points[i];
left_points[i].Offset(right_tile_bounds.x(), right_tile_bounds.y());
}
generator.GestureMultiFingerScroll(kTouchPoints, left_points, 15, kSteps,
-150, 0);
gfx::Rect left_tile_bounds = toplevel->GetWindowBoundsInScreen();
EXPECT_NE(normal_bounds.ToString(), left_tile_bounds.ToString());
EXPECT_NE(right_tile_bounds.ToString(), left_tile_bounds.ToString());
// Swipe right again.
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, 150, 0);
gfx::Rect current_bounds = toplevel->GetWindowBoundsInScreen();
EXPECT_NE(current_bounds.ToString(), left_tile_bounds.ToString());
EXPECT_EQ(current_bounds.ToString(), right_tile_bounds.ToString());
}
TEST_F(SystemGestureEventFilterTest, TwoFingerDragTwoWindows) {
aura::Window* root_window = Shell::GetPrimaryRootWindow();
ui::GestureConfiguration::set_max_separation_for_gesture_touches_in_pixels(0);
views::Widget* first = views::Widget::CreateWindowWithContextAndBounds(
new ResizableWidgetDelegate, root_window, gfx::Rect(10, 0, 50, 100));
first->Show();
views::Widget* second = views::Widget::CreateWindowWithContextAndBounds(
new ResizableWidgetDelegate, root_window, gfx::Rect(100, 0, 100, 100));
second->Show();
// Start a two-finger drag on |first|, and then try to use another two-finger
// drag to move |second|. The attempt to move |second| should fail.
const gfx::Rect& first_bounds = first->GetWindowBoundsInScreen();
const gfx::Rect& second_bounds = second->GetWindowBoundsInScreen();
const int kSteps = 15;
const int kTouchPoints = 4;
gfx::Point points[kTouchPoints] = {
first_bounds.origin() + gfx::Vector2d(5, 5),
first_bounds.origin() + gfx::Vector2d(30, 10),
second_bounds.origin() + gfx::Vector2d(5, 5),
second_bounds.origin() + gfx::Vector2d(40, 20)
};
aura::test::EventGenerator generator(root_window);
// Do not drag too fast to avoid fling.
generator.GestureMultiFingerScroll(kTouchPoints, points,
50, kSteps, 0, 150);
EXPECT_NE(first_bounds.ToString(),
first->GetWindowBoundsInScreen().ToString());
EXPECT_EQ(second_bounds.ToString(),
second->GetWindowBoundsInScreen().ToString());
}
TEST_F(SystemGestureEventFilterTest, WindowsWithMaxSizeDontSnap) {
gfx::Rect bounds(250, 150, 100, 100);
aura::Window* root_window = Shell::GetPrimaryRootWindow();
views::Widget* toplevel = views::Widget::CreateWindowWithContextAndBounds(
new MaxSizeWidgetDelegate, root_window, bounds);
toplevel->Show();
const int kSteps = 15;
const int kTouchPoints = 2;
gfx::Point points[kTouchPoints] = {
gfx::Point(bounds.x() + 10, bounds.y() + 30),
gfx::Point(bounds.x() + 30, bounds.y() + 20),
};
aura::test::EventGenerator generator(root_window,
toplevel->GetNativeWindow());
// Swipe down to minimize.
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, 0, 150);
wm::WindowState* toplevel_state =
wm::GetWindowState(toplevel->GetNativeWindow());
EXPECT_TRUE(toplevel_state->IsMinimized());
toplevel->Restore();
toplevel->GetNativeWindow()->SetBounds(bounds);
// Check that swiping up doesn't maximize.
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, 0, -150);
EXPECT_FALSE(toplevel_state->IsMaximized());
toplevel->Restore();
toplevel->GetNativeWindow()->SetBounds(bounds);
// Check that swiping right doesn't snap.
gfx::Rect normal_bounds = toplevel->GetWindowBoundsInScreen();
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, 150, 0);
normal_bounds.set_x(normal_bounds.x() + 150);
EXPECT_EQ(normal_bounds.ToString(),
toplevel->GetWindowBoundsInScreen().ToString());
toplevel->GetNativeWindow()->SetBounds(bounds);
// Check that swiping left doesn't snap.
normal_bounds = toplevel->GetWindowBoundsInScreen();
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, -150, 0);
normal_bounds.set_x(normal_bounds.x() - 150);
EXPECT_EQ(normal_bounds.ToString(),
toplevel->GetWindowBoundsInScreen().ToString());
toplevel->GetNativeWindow()->SetBounds(bounds);
// Swipe right again, make sure the window still doesn't snap.
normal_bounds = toplevel->GetWindowBoundsInScreen();
normal_bounds.set_x(normal_bounds.x() + 150);
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, 150, 0);
EXPECT_EQ(normal_bounds.ToString(),
toplevel->GetWindowBoundsInScreen().ToString());
}
TEST_F(SystemGestureEventFilterTest, DISABLED_TwoFingerDragEdge) {
gfx::Rect bounds(0, 0, 200, 100);
aura::Window* root_window = Shell::GetPrimaryRootWindow();
views::Widget* toplevel = views::Widget::CreateWindowWithContextAndBounds(
new ResizableWidgetDelegate, root_window, bounds);
toplevel->Show();
const int kSteps = 15;
const int kTouchPoints = 2;
gfx::Point points[kTouchPoints] = {
gfx::Point(30, 20), // Caption
gfx::Point(0, 40), // Left edge
};
EXPECT_EQ(HTCAPTION, toplevel->GetNativeWindow()->delegate()->
GetNonClientComponent(points[0]));
EXPECT_EQ(HTLEFT, toplevel->GetNativeWindow()->delegate()->
GetNonClientComponent(points[1]));
aura::test::EventGenerator generator(root_window,
toplevel->GetNativeWindow());
bounds = toplevel->GetNativeWindow()->bounds();
// Swipe down. Nothing should happen.
generator.GestureMultiFingerScroll(kTouchPoints, points, 15, kSteps, 0, 150);
EXPECT_EQ(bounds.ToString(),
toplevel->GetNativeWindow()->bounds().ToString());
}
// We do not allow resizing a window via multiple edges simultaneously. Test
// that the behavior is reasonable if a user attempts to resize a window via
// several edges.
TEST_F(SystemGestureEventFilterTest,
TwoFingerAttemptResizeLeftAndRightEdgesSimultaneously) {
gfx::Rect initial_bounds(0, 0, 400, 400);
views::Widget* toplevel =
views::Widget::CreateWindowWithContextAndBounds(
new ResizableWidgetDelegate, CurrentContext(), initial_bounds);
toplevel->Show();
const int kSteps = 15;
const int kTouchPoints = 2;
gfx::Point points[kTouchPoints] = {
gfx::Point(0, 40), // Left edge
gfx::Point(399, 40), // Right edge
};
int delays[kTouchPoints] = {0, 120};
EXPECT_EQ(HTLEFT, toplevel->GetNonClientComponent(points[0]));
EXPECT_EQ(HTRIGHT, toplevel->GetNonClientComponent(points[1]));
GetEventGenerator().GestureMultiFingerScrollWithDelays(
kTouchPoints, points, delays, 15, kSteps, 0, 40);
// The window bounds should not have changed because neither of the fingers
// moved horizontally.
EXPECT_EQ(initial_bounds.ToString(),
toplevel->GetNativeWindow()->bounds().ToString());
}
TEST_F(SystemGestureEventFilterTest, TwoFingerDragDelayed) {
gfx::Rect bounds(0, 0, 200, 100);
aura::Window* root_window = Shell::GetPrimaryRootWindow();
views::Widget* toplevel = views::Widget::CreateWindowWithContextAndBounds(
new ResizableWidgetDelegate, root_window, bounds);
toplevel->Show();
const int kSteps = 15;
const int kTouchPoints = 2;
gfx::Point points[kTouchPoints] = {
gfx::Point(30, 20), // Caption
gfx::Point(34, 20), // Caption
};
int delays[kTouchPoints] = {0, 120};
EXPECT_EQ(HTCAPTION, toplevel->GetNativeWindow()->delegate()->
GetNonClientComponent(points[0]));
EXPECT_EQ(HTCAPTION, toplevel->GetNativeWindow()->delegate()->
GetNonClientComponent(points[1]));
aura::test::EventGenerator generator(root_window,
toplevel->GetNativeWindow());
bounds = toplevel->GetNativeWindow()->bounds();
// Swipe right and down starting with one finger.
// Add another finger after 120ms and continue dragging.
// The window should move and the drag should be determined by the center
// point between the fingers.
generator.GestureMultiFingerScrollWithDelays(
kTouchPoints, points, delays, 15, kSteps, 150, 150);
bounds += gfx::Vector2d(150 + (points[1].x() - points[0].x()) / 2, 150);
EXPECT_EQ(bounds.ToString(),
toplevel->GetNativeWindow()->bounds().ToString());
}
TEST_F(SystemGestureEventFilterTest, ThreeFingerGestureStopsDrag) {
gfx::Rect bounds(0, 0, 200, 100);
aura::Window* root_window = Shell::GetPrimaryRootWindow();
views::Widget* toplevel = views::Widget::CreateWindowWithContextAndBounds(
new ResizableWidgetDelegate, root_window, bounds);
toplevel->Show();
const int kSteps = 10;
const int kTouchPoints = 3;
gfx::Point points[kTouchPoints] = {
gfx::Point(30, 20), // Caption
gfx::Point(34, 20), // Caption
gfx::Point(38, 20), // Caption
};
int delays[kTouchPoints] = {0, 0, 120};
EXPECT_EQ(HTCAPTION, toplevel->GetNativeWindow()->delegate()->
GetNonClientComponent(points[0]));
EXPECT_EQ(HTCAPTION, toplevel->GetNativeWindow()->delegate()->
GetNonClientComponent(points[1]));
aura::test::EventGenerator generator(root_window,
toplevel->GetNativeWindow());
bounds = toplevel->GetNativeWindow()->bounds();
// Swipe right and down starting with two fingers.
// Add third finger after 120ms and continue dragging.
// The window should start moving but stop when the 3rd finger touches down.
const int kEventSeparation = 15;
generator.GestureMultiFingerScrollWithDelays(
kTouchPoints, points, delays, kEventSeparation, kSteps, 150, 150);
int expected_drag = 150 / kSteps * 120 / kEventSeparation;
bounds += gfx::Vector2d(expected_drag, expected_drag);
EXPECT_EQ(bounds.ToString(),
toplevel->GetNativeWindow()->bounds().ToString());
}
TEST_F(SystemGestureEventFilterTest, DragLeftNearEdgeSnaps) {
gfx::Rect bounds(200, 150, 400, 100);
aura::Window* root_window = Shell::GetPrimaryRootWindow();
views::Widget* toplevel = views::Widget::CreateWindowWithContextAndBounds(
new ResizableWidgetDelegate, root_window, bounds);
toplevel->Show();
const int kSteps = 15;
const int kTouchPoints = 2;
gfx::Point points[kTouchPoints] = {
gfx::Point(bounds.x() + bounds.width() / 2, bounds.y() + 5),
gfx::Point(bounds.x() + bounds.width() / 2, bounds.y() + 5),
};
aura::Window* toplevel_window = toplevel->GetNativeWindow();
aura::test::EventGenerator generator(root_window, toplevel_window);
// Check that dragging left snaps before reaching the screen edge.
gfx::Rect work_area =
Shell::GetScreen()->GetDisplayNearestWindow(root_window).work_area();
int drag_x = work_area.x() + 20 - points[0].x();
generator.GestureMultiFingerScroll(
kTouchPoints, points, 120, kSteps, drag_x, 0);
EXPECT_EQ(wm::GetDefaultLeftSnappedWindowBoundsInParent(
toplevel_window).ToString(),
toplevel_window->bounds().ToString());
}
TEST_F(SystemGestureEventFilterTest, DragRightNearEdgeSnaps) {
gfx::Rect bounds(200, 150, 400, 100);
aura::Window* root_window = Shell::GetPrimaryRootWindow();
views::Widget* toplevel = views::Widget::CreateWindowWithContextAndBounds(
new ResizableWidgetDelegate, root_window, bounds);
toplevel->Show();
const int kSteps = 15;
const int kTouchPoints = 2;
gfx::Point points[kTouchPoints] = {
gfx::Point(bounds.x() + bounds.width() / 2, bounds.y() + 5),
gfx::Point(bounds.x() + bounds.width() / 2, bounds.y() + 5),
};
aura::Window* toplevel_window = toplevel->GetNativeWindow();
aura::test::EventGenerator generator(root_window, toplevel_window);
// Check that dragging right snaps before reaching the screen edge.
gfx::Rect work_area =
Shell::GetScreen()->GetDisplayNearestWindow(root_window).work_area();
int drag_x = work_area.right() - 20 - points[0].x();
generator.GestureMultiFingerScroll(
kTouchPoints, points, 120, kSteps, drag_x, 0);
EXPECT_EQ(wm::GetDefaultRightSnappedWindowBoundsInParent(
toplevel_window).ToString(),
toplevel_window->bounds().ToString());
}
// Tests that the window manager does not consume gesture events targeted to
// windows of type WINDOW_TYPE_CONTROL. This is important because the web
// contents are often (but not always) of type WINDOW_TYPE_CONTROL.
TEST_F(SystemGestureEventFilterTest,
ControlWindowGetsMultiFingerGestureEvents) {
scoped_ptr<aura::Window> parent(
CreateTestWindowInShellWithBounds(gfx::Rect(100, 100)));
aura::test::EventCountDelegate delegate;
delegate.set_window_component(HTCLIENT);
scoped_ptr<aura::Window> child(new aura::Window(&delegate));
child->SetType(ui::wm::WINDOW_TYPE_CONTROL);
child->Init(aura::WINDOW_LAYER_TEXTURED);
parent->AddChild(child.get());
child->SetBounds(gfx::Rect(100, 100));
child->Show();
ui::test::TestEventHandler event_handler;
aura::Env::GetInstance()->PrependPreTargetHandler(&event_handler);
GetEventGenerator().MoveMouseTo(0, 0);
for (int i = 1; i <= 3; ++i)
GetEventGenerator().PressTouchId(i);
for (int i = 1; i <= 3; ++i)
GetEventGenerator().ReleaseTouchId(i);
EXPECT_EQ(event_handler.num_gesture_events(),
delegate.GetGestureCountAndReset());
aura::Env::GetInstance()->RemovePreTargetHandler(&event_handler);
}
} // namespace test
} // namespace ash