Implemented swipe to close in overview mode.

ash/wm/overview/window_selector_unittest.cc

Index: ash/wm/overview/window_selector_unittest.cc
diff --git a/ash/wm/overview/window_selector_unittest.cc b/ash/wm/overview/window_selector_unittest.cc
index fef9b75942451b118bd8b09072bbdac1984a75e7..3a4278abc52f825a4666b4430c282c60a157f542 100644
--- a/ash/wm/overview/window_selector_unittest.cc
+++ b/ash/wm/overview/window_selector_unittest.cc
@@ -3,8 +3,11 @@
 // found in the LICENSE file.
 
 #include <algorithm>
+#include <map>
+#include <vector>
 
 #include "ash/accessibility_delegate.h"
+#include "ash/ash_switches.h"
 #include "ash/drag_drop/drag_drop_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_util.h"
@@ -28,6 +31,7 @@
 #include "ash/wm/window_util.h"
 #include "ash/wm/wm_event.h"
 #include "base/basictypes.h"
+#include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_vector.h"
 #include "base/run_loop.h"
@@ -68,6 +72,18 @@ void CancelDrag(DragDropController* controller, bool* canceled) {
   }
 }
 
+// A short drag distance that will not cause an overview item to close.
+const int kShortDragDistance = 10;
+
+// A far drag distance that will cause an overview item to close.
+const int kFarDragDistance = 200;
+
+// A slow fling velocity that should not cause selctor items to close.
+const int kSlowFlingVelocity = 2000;
+
+// A fast fling velocity that should cause selector items to close.
+const int kFastFlingVelocity = 5000;
+
 }  // namespace
 
 class WindowSelectorTest : public test::AshTestBase {
@@ -119,6 +135,17 @@ class WindowSelectorTest : public test::AshTestBase {
     return widget;
   }
 
+  scoped_ptr<views::Widget> CreateWindowWidget(const gfx::Rect& bounds) {
+    scoped_ptr<views::Widget> widget(new views::Widget);
+    views::Widget::InitParams params;
+    params.bounds = bounds;
+    params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+    widget->Init(params);
+    widget->Show();
+    ParentWindowInPrimaryRootWindow(widget->GetNativeWindow());
+    return widget.Pass();
+  }
+
   bool WindowsOverlapping(aura::Window* window1, aura::Window* window2) {
     gfx::RectF window1_bounds = GetTransformedTargetBounds(window1);
     gfx::RectF window2_bounds = GetTransformedTargetBounds(window2);
@@ -256,6 +283,24 @@ class WindowSelectorTest : public test::AshTestBase {
   DISALLOW_COPY_AND_ASSIGN(WindowSelectorTest);
 };
 
+class WindowSelectorSwipeToCloseDisabledTest : public WindowSelectorTest {
+ public:
+  WindowSelectorSwipeToCloseDisabledTest() {}
+  ~WindowSelectorSwipeToCloseDisabledTest() override {}
+
+  // WindowSelectorTest:
+  void SetUp() override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WindowSelectorSwipeToCloseDisabledTest);
+};
+
+void WindowSelectorSwipeToCloseDisabledTest::SetUp() {
+  base::CommandLine::ForCurrentProcess()->AppendSwitch(
+      switches::kAshDisableSwipeToCloseInOverviewMode);
+  WindowSelectorTest::SetUp();
+}
+
 // Tests that an a11y alert is sent on entering overview mode.
 TEST_F(WindowSelectorTest, A11yAlertOnOverviewMode) {
   gfx::Rect bounds(0, 0, 400, 400);
@@ -1246,4 +1291,164 @@ TEST_F(WindowSelectorTest, CancelOverviewOnTap) {
   EXPECT_FALSE(IsSelecting());
 }
 
+// Verify swipe to close doesn't work when swipe to close is disabled.
+TEST_F(WindowSelectorSwipeToCloseDisabledTest, WindowTapDragFarDistance) {
+  // We need a widget for the close button to work, a bare window will crash.

[flackr, 2015/02/10 17:49:50]

Probably worth mentioning why. Is a bare window missing a layer?

[bruthig, 2015/02/12 18:08:55]

I've moved the comment to the CreateWindowWidget method documentation. 
Hopefully that is more understandable.

+  scoped_ptr<views::Widget> widget =
+      CreateWindowWidget(gfx::Rect(0, 0, 400, 400));
+
+  ToggleOverview();
+  ASSERT_TRUE(IsSelecting());
+
+  aura::Window* window = widget->GetNativeWindow();
+  gfx::Rect bounds = ToNearestRect(GetTransformedBoundsInRootWindow(window));
+  ui::test::EventGenerator event_generator(window->GetRootWindow());
+
+  ASSERT_FALSE(widget->IsClosed());
+
+  gfx::Point start(bounds.CenterPoint());
+  gfx::Point end(start.x() - kFarDragDistance, start.y());
+  event_generator.GestureScrollSequence(
+      start, end, base::TimeDelta::FromMilliseconds(10), 5);
+
+  EXPECT_FALSE(widget->IsClosed());
+
+  RunAllPendingInMessageLoop();
+  EXPECT_TRUE(IsSelecting());
+}
+
+// Test dragging a window a short distance.
+TEST_F(WindowSelectorTest, WindowTapDragShortDistance) {
+  // We need a widget for the close button to work, a bare window will crash.
+  scoped_ptr<views::Widget> widget =
+      CreateWindowWidget(gfx::Rect(0, 0, 400, 400));
+
+  ToggleOverview();
+
+  aura::Window* window = widget->GetNativeWindow();
+  gfx::Rect bounds = ToNearestRect(GetTransformedBoundsInRootWindow(window));
+  ui::test::EventGenerator event_generator(window->GetRootWindow());
+
+  ASSERT_FALSE(widget->IsClosed());
+
+  gfx::Point start(bounds.CenterPoint());
+  gfx::Point end(start.x() - kShortDragDistance, start.y());
+  event_generator.GestureScrollSequence(
+      start, end, base::TimeDelta::FromMilliseconds(10), 5);

[flackr, 2015/02/10 17:49:50]

Should probably also verify the window moves with the scroll and fades out.

[bruthig, 2015/02/12 18:08:55]

Done.

+
+  EXPECT_FALSE(widget->IsClosed());
+
+  RunAllPendingInMessageLoop();
+  EXPECT_TRUE(IsSelecting());
+}
+
+// Test dragging a window a far distance.
+TEST_F(WindowSelectorTest, WindowTapDragFarDistance) {
+  // We need a widget for the close button to work, a bare window will crash.
+  scoped_ptr<views::Widget> widget =
+      CreateWindowWidget(gfx::Rect(0, 0, 400, 400));
+
+  ToggleOverview();
+  ASSERT_TRUE(IsSelecting());
+
+  aura::Window* window = widget->GetNativeWindow();
+  gfx::Rect bounds = ToNearestRect(GetTransformedBoundsInRootWindow(window));
+  ui::test::EventGenerator event_generator(window->GetRootWindow());
+
+  ASSERT_FALSE(widget->IsClosed());
+
+  gfx::Point start(bounds.CenterPoint());
+  gfx::Point end(start.x() - kFarDragDistance, start.y());
+  event_generator.GestureScrollSequence(
+      start, end, base::TimeDelta::FromMilliseconds(10), 5);
+
+  EXPECT_TRUE(widget->IsClosed());
+
+  RunAllPendingInMessageLoop();
+  EXPECT_FALSE(IsSelecting());
+}
+
+// Test a slow velocity fling.
+TEST_F(WindowSelectorTest, SlowVelocityFling) {
+  // We need a widget for the close button to work, a bare window will crash.
+  scoped_ptr<views::Widget> widget =
+      CreateWindowWidget(gfx::Rect(0, 0, 400, 400));
+
+  ToggleOverview();
+
+  aura::Window* window = widget->GetNativeWindow();
+  gfx::RectF bounds = GetTransformedBoundsInRootWindow(window);
+  ui::test::EventGenerator event_generator(window->GetRootWindow());
+
+  ASSERT_FALSE(widget->IsClosed());
+
+  gfx::Point start(bounds.CenterPoint().x(), bounds.CenterPoint().y());
+  gfx::Point end(start.x() - kShortDragDistance, start.y());
+  const base::TimeDelta kScrollDuration =
+      event_generator.CalculateScrollDurationForFlingVelocity(
+          start, end, kSlowFlingVelocity, 10);
+  event_generator.GestureScrollSequence(start, end, kScrollDuration, 10);
+
+  EXPECT_FALSE(widget->IsClosed());
+
+  RunAllPendingInMessageLoop();
+  EXPECT_TRUE(IsSelecting());
+}
+
+// Test a fast velocity fling.
+TEST_F(WindowSelectorTest, FastVelocityFling) {
+  // We need a widget for the close button to work, a bare window will crash.
+  scoped_ptr<views::Widget> widget =
+      CreateWindowWidget(gfx::Rect(0, 0, 400, 400));
+
+  ToggleOverview();
+  ASSERT_TRUE(IsSelecting());
+
+  aura::Window* window = widget->GetNativeWindow();
+  gfx::RectF bounds = GetTransformedBoundsInRootWindow(window);
+  ui::test::EventGenerator event_generator(window->GetRootWindow());
+
+  ASSERT_FALSE(widget->IsClosed());
+
+  gfx::Point start(bounds.CenterPoint().x(), bounds.CenterPoint().y());
+  gfx::Point end(start.x() - kShortDragDistance, start.y());
+  const base::TimeDelta kScrollDuration =
+      event_generator.CalculateScrollDurationForFlingVelocity(
+          start, end, kFastFlingVelocity, 10);
+  event_generator.GestureScrollSequence(start, end, kScrollDuration, 10);
+
+  EXPECT_TRUE(widget->IsClosed());
+
+  RunAllPendingInMessageLoop();
+  EXPECT_FALSE(IsSelecting());
+}
+
+// Test a fast velocity fling.
+TEST_F(WindowSelectorTest, SlowVelocityFlingAtAFarDistance) {
+  // We need a widget for the close button to work, a bare window will crash.
+  scoped_ptr<views::Widget> widget =
+      CreateWindowWidget(gfx::Rect(0, 0, 400, 400));
+
+  ToggleOverview();
+  ASSERT_TRUE(IsSelecting());
+
+  aura::Window* window = widget->GetNativeWindow();
+  gfx::RectF bounds = GetTransformedBoundsInRootWindow(window);
+  ui::test::EventGenerator event_generator(window->GetRootWindow());
+
+  ASSERT_FALSE(widget->IsClosed());
+
+  gfx::Point start(bounds.CenterPoint().x(), bounds.CenterPoint().y());
+  gfx::Point end(start.x() - kFarDragDistance, start.y());
+  const base::TimeDelta kScrollDuration =
+      event_generator.CalculateScrollDurationForFlingVelocity(
+          start, end, kSlowFlingVelocity, 10);
+  event_generator.GestureScrollSequence(start, end, kScrollDuration, 10);
+
+  EXPECT_TRUE(widget->IsClosed());
+
+  RunAllPendingInMessageLoop();
+  EXPECT_FALSE(IsSelecting());
+}
+
 }  // namespace ash