text: // 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 <stddef.h>
  
  #include "base/command_line.h"
  #include "base/macros.h"
  #include "base/strings/utf_string_conversions.h"
  #include "ui/aura/client/screen_position_client.h"
  #include "ui/aura/test/test_cursor_client.h"
  #include "ui/aura/window.h"
  #include "ui/base/resource/resource_bundle.h"
  #include "ui/base/touch/touch_editing_controller.h"
  #include "ui/base/ui_base_switches.h"
  #include "ui/events/event_utils.h"
  #include "ui/events/test/event_generator.h"
  #include "ui/gfx/canvas.h"
  #include "ui/gfx/geometry/point.h"
  #include "ui/gfx/geometry/rect.h"
  #include "ui/gfx/render_text.h"
  #include "ui/resources/grit/ui_resources.h"
  #include "ui/views/controls/textfield/textfield.h"
  #include "ui/views/controls/textfield/textfield_test_api.h"
  #include "ui/views/resources/grit/views_resources.h"
  #include "ui/views/test/views_test_base.h"
  #include "ui/views/touchui/touch_selection_controller_impl.h"
  #include "ui/views/views_touch_selection_controller_factory.h"
  #include "ui/views/widget/widget.h"
  #include "ui/views/widget/widget_delegate.h"
  
  using base::ASCIIToUTF16;
  using base::UTF16ToUTF8;
  using base::WideToUTF16;
  
  namespace {
  // Should match kSelectionHandleBarMinHeight in touch_selection_controller.
  const int kBarMinHeight = 5;
  
  // Should match kSelectionHandleBarBottomAllowance in
  // touch_selection_controller.
  const int kBarBottomAllowance = 3;
  
  // For selection bounds |b1| and |b2| in a paragraph of text, returns -1 if |b1|
  // is physically before |b2|, +1 if |b2| is before |b1|, and 0 if they are at
  // the same location.
  int CompareTextSelectionBounds(const gfx::SelectionBound& b1,
                                 const gfx::SelectionBound& b2) {
    if (b1.edge_top().y() < b2.edge_top().y() ||
        b1.edge_top().x() < b2.edge_top().x()) {
      return -1;
    }
    if (b1 == b2)
      return 0;
    return 1;
  }
  
  }  // namespace
  
  namespace views {
  
  class TouchSelectionControllerImplTest : public ViewsTestBase {
   public:
    TouchSelectionControllerImplTest()
        : textfield_widget_(nullptr),
          widget_(nullptr),
          textfield_(nullptr),
          views_tsc_factory_(new ViewsTouchEditingControllerFactory) {
      ui::TouchEditingControllerFactory::SetInstance(views_tsc_factory_.get());
    }
  
    ~TouchSelectionControllerImplTest() override {
      ui::TouchEditingControllerFactory::SetInstance(nullptr);
    }
  
    void SetUp() override {
      ViewsTestBase::SetUp();
      // TODO: test uses GetContext(), which is not applicable to aura-mus.
      // http://crbug.com/663809.
      if (IsAuraMusClient())
        return;
      test_cursor_client_.reset(new aura::test::TestCursorClient(GetContext()));
    }
  
    void TearDown() override {
      test_cursor_client_.reset();
      if (textfield_widget_ && !textfield_widget_->IsClosed())
        textfield_widget_->Close();
      if (widget_ && !widget_->IsClosed())
        widget_->Close();
      ViewsTestBase::TearDown();
    }
  
    void CreateTextfield() {
      textfield_ = new Textfield();
      textfield_widget_ = new Widget;
      Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
      params.bounds = gfx::Rect(0, 0, 200, 200);
      textfield_widget_->Init(params);
      View* container = new View();
      textfield_widget_->SetContentsView(container);
      container->AddChildView(textfield_);
  
      textfield_->SetBoundsRect(gfx::Rect(0, 0, 200, 21));
      textfield_->set_id(1);
      textfield_widget_->Show();
  
      textfield_->RequestFocus();
      textfield_test_api_.reset(new TextfieldTestApi(textfield_));
    }
  
    void CreateWidget() {
      widget_ = new Widget;
      Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
      params.bounds = gfx::Rect(0, 0, 200, 200);
      widget_->Init(params);
      widget_->Show();
  }
  
   protected:
    static bool IsCursorHandleVisibleFor(
        ui::TouchEditingControllerDeprecated* controller) {
      TouchSelectionControllerImpl* impl =
          static_cast<TouchSelectionControllerImpl*>(controller);
      return impl->IsCursorHandleVisible();
    }
  
    gfx::Rect GetCursorRect(const gfx::SelectionModel& sel) {
      return textfield_test_api_->GetRenderText()->GetCursorBounds(sel, true);
    }
  
    gfx::Point GetCursorPosition(const gfx::SelectionModel& sel) {
      gfx::Rect cursor_bounds = GetCursorRect(sel);
      return gfx::Point(cursor_bounds.x(), cursor_bounds.y());
    }
  
    TouchSelectionControllerImpl* GetSelectionController() {
      return static_cast<TouchSelectionControllerImpl*>(
          textfield_test_api_->touch_selection_controller());
    }
  
    void StartTouchEditing() {
      textfield_test_api_->CreateTouchSelectionControllerAndNotifyIt();
    }
  
    void EndTouchEditing() {
      textfield_test_api_->ResetTouchSelectionController();
    }
  
    void SimulateSelectionHandleDrag(gfx::Vector2d v, int selection_handle) {
      TouchSelectionControllerImpl* controller = GetSelectionController();
      views::WidgetDelegateView* handle = nullptr;
      if (selection_handle == 1)
        handle = controller->GetHandle1View();
      else
        handle = controller->GetHandle2View();
  
      gfx::Point grip_location = gfx::Point(handle->size().width() / 2,
                                            handle->size().height() / 2);
      base::TimeTicks time_stamp = base::TimeTicks();
      {
        ui::GestureEventDetails details(ui::ET_GESTURE_SCROLL_BEGIN);
        ui::GestureEvent scroll_begin(
            grip_location.x(), grip_location.y(), 0, time_stamp, details);
        handle->OnGestureEvent(&scroll_begin);
      }
      test_cursor_client_->DisableMouseEvents();
      {
        ui::GestureEventDetails details(ui::ET_GESTURE_SCROLL_UPDATE);
        gfx::Point update_location = grip_location + v;
        ui::GestureEvent scroll_update(
            update_location.x(), update_location.y(), 0, time_stamp, details);
        handle->OnGestureEvent(&scroll_update);
      }
      {
        ui::GestureEventDetails details(ui::ET_GESTURE_SCROLL_END);
        ui::GestureEvent scroll_end(
            grip_location.x(), grip_location.y(), 0, time_stamp, details);
        handle->OnGestureEvent(&scroll_end);
      }
      test_cursor_client_->EnableMouseEvents();
    }
  
    gfx::NativeView GetCursorHandleNativeView() {
      return GetSelectionController()->GetCursorHandleNativeView();
    }
  
    gfx::SelectionBound::Type GetSelectionHandle1Type() {
      return GetSelectionController()->GetSelectionHandle1Type();
    }
  
    gfx::Rect GetSelectionHandle1Bounds() {
      return GetSelectionController()->GetSelectionHandle1Bounds();
    }
  
    gfx::Rect GetSelectionHandle2Bounds() {
      return GetSelectionController()->GetSelectionHandle2Bounds();
    }
  
    gfx::Rect GetCursorHandleBounds() {
      return GetSelectionController()->GetCursorHandleBounds();
    }
  
    gfx::Rect GetExpectedHandleBounds(const gfx::SelectionBound& bound) {
      return GetSelectionController()->GetExpectedHandleBounds(bound);
    }
  
    bool IsSelectionHandle1Visible() {
      return GetSelectionController()->IsSelectionHandle1Visible();
    }
  
    bool IsSelectionHandle2Visible() {
      return GetSelectionController()->IsSelectionHandle2Visible();
    }
  
    bool IsCursorHandleVisible() {
      return GetSelectionController()->IsCursorHandleVisible();
    }
  
    gfx::RenderText* GetRenderText() {
      return textfield_test_api_->GetRenderText();
    }
  
    gfx::Point GetCursorHandleDragPoint() {
      gfx::Rect rect = GetCursorHandleBounds();
      const gfx::SelectionModel& sel = textfield_->GetSelectionModel();
      int cursor_height = GetCursorRect(sel).height();
      gfx::Point point = rect.CenterPoint();
      point.Offset(0, cursor_height);
      return point;
    }
  
    // If textfield has selection, this verifies that the selection handles
    // are visible, at the correct positions (at the end points of selection), and
    // (if |check_direction| is set to true), that they have the correct
    // directionality.
    // |cursor_at_selection_handle_1| is used to decide whether selection
    // handle 1's position is matched against the start of selection or the end.
    void VerifyHandlePositions(bool cursor_at_selection_handle_1,
                               bool check_direction,
                               const tracked_objects::Location& from_here) {
      gfx::SelectionBound anchor, focus;
      textfield_->GetSelectionEndPoints(&anchor, &focus);
      std::string from_str = from_here.ToString();
      if (textfield_->HasSelection()) {
        EXPECT_TRUE(IsSelectionHandle1Visible()) << from_str;
        EXPECT_TRUE(IsSelectionHandle2Visible()) << from_str;
        EXPECT_FALSE(IsCursorHandleVisible());
        gfx::Rect sh1_bounds = GetSelectionHandle1Bounds();
        gfx::Rect sh2_bounds = GetSelectionHandle2Bounds();
        if (cursor_at_selection_handle_1) {
          EXPECT_EQ(sh1_bounds, GetExpectedHandleBounds(focus)) << from_str;
          EXPECT_EQ(sh2_bounds, GetExpectedHandleBounds(anchor)) << from_str;
        } else {
          EXPECT_EQ(sh1_bounds, GetExpectedHandleBounds(anchor)) << from_str;
          EXPECT_EQ(sh2_bounds, GetExpectedHandleBounds(focus)) << from_str;
        }
      } else {
        EXPECT_FALSE(IsSelectionHandle1Visible()) << from_str;
        EXPECT_FALSE(IsSelectionHandle2Visible()) << from_str;
        EXPECT_TRUE(IsCursorHandleVisible());
        gfx::Rect cursor_bounds = GetCursorHandleBounds();
        DCHECK(anchor == focus);
        EXPECT_EQ(cursor_bounds, GetExpectedHandleBounds(anchor)) << from_str;
      }
      if (check_direction)  {
        if (CompareTextSelectionBounds(anchor, focus) < 0) {
          EXPECT_EQ(gfx::SelectionBound::LEFT, anchor.type()) << from_str;
          EXPECT_EQ(gfx::SelectionBound::RIGHT, focus.type()) << from_str;
        } else if (CompareTextSelectionBounds(anchor, focus) > 0) {
          EXPECT_EQ(gfx::SelectionBound::LEFT, focus.type()) << from_str;
          EXPECT_EQ(gfx::SelectionBound::RIGHT, anchor.type()) << from_str;
        } else {
          EXPECT_EQ(gfx::SelectionBound::CENTER, focus.type()) << from_str;
          EXPECT_EQ(gfx::SelectionBound::CENTER, anchor.type()) << from_str;
        }
      }
    }
  
    // Sets up a textfield with a long text string such that it doesn't all fit
    // into the textfield. Then selects the text - the first handle is expected
    // to be invisible. |selection_start| is the position of the first handle.
    void SetupSelectionInvisibleHandle(uint32_t selection_start) {
      // Create a textfield with lots of text in it.
      CreateTextfield();
      std::string some_text("some text");
      std::string textfield_text;
      for (int i = 0; i < 10; ++i)
        textfield_text += some_text;
      textfield_->SetText(ASCIIToUTF16(textfield_text));
  
      // Tap the textfield to invoke selection.
      ui::GestureEventDetails details(ui::ET_GESTURE_TAP);
      details.set_tap_count(1);
      ui::GestureEvent tap(0, 0, 0, base::TimeTicks(), details);
      textfield_->OnGestureEvent(&tap);
  
      // Select some text such that one handle is hidden.
      textfield_->SelectRange(gfx::Range(
          selection_start, static_cast<uint32_t>(textfield_text.length())));
  
      // Check that one selection handle is hidden.
      EXPECT_FALSE(IsSelectionHandle1Visible());
      EXPECT_TRUE(IsSelectionHandle2Visible());
      EXPECT_EQ(gfx::Range(selection_start,
                           static_cast<uint32_t>(textfield_text.length())),
                textfield_->GetSelectedRange());
    }
  
    Widget* textfield_widget_;
    Widget* widget_;
  
    Textfield* textfield_;
    std::unique_ptr<TextfieldTestApi> textfield_test_api_;
    std::unique_ptr<ViewsTouchEditingControllerFactory> views_tsc_factory_;
    std::unique_ptr<aura::test::TestCursorClient> test_cursor_client_;
  
   private:
    DISALLOW_COPY_AND_ASSIGN(TouchSelectionControllerImplTest);
  };
  
  // Tests that the selection handles are placed appropriately when selection in
  // a Textfield changes.
  TEST_F(TouchSelectionControllerImplTest, SelectionInTextfieldTest) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    CreateTextfield();
    textfield_->SetText(ASCIIToUTF16("some text"));
    // Tap the textfield to invoke touch selection.
    ui::GestureEventDetails details(ui::ET_GESTURE_TAP);
    details.set_tap_count(1);
    ui::GestureEvent tap(0, 0, 0, base::TimeTicks(), details);
    textfield_->OnGestureEvent(&tap);
  
    // Test selecting a range.
    textfield_->SelectRange(gfx::Range(3, 7));
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Test selecting everything.
    textfield_->SelectAll(false);
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Test with no selection.
    textfield_->ClearSelection();
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Test with lost focus.
    textfield_widget_->GetFocusManager()->ClearFocus();
    EXPECT_FALSE(GetSelectionController());
  
    // Test with focus re-gained.
    textfield_widget_->GetFocusManager()->SetFocusedView(textfield_);
    EXPECT_FALSE(GetSelectionController());
    textfield_->OnGestureEvent(&tap);
    VerifyHandlePositions(false, true, FROM_HERE);
  }
  
  // Tests that the selection handles are placed appropriately in bidi text.
  TEST_F(TouchSelectionControllerImplTest, SelectionInBidiTextfieldTest) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    CreateTextfield();
    textfield_->SetText(WideToUTF16(L"abc\x05d0\x05d1\x05d2"));
    // Tap the textfield to invoke touch selection.
    ui::GestureEventDetails details(ui::ET_GESTURE_TAP);
    details.set_tap_count(1);
    ui::GestureEvent tap(0, 0, 0, base::TimeTicks(), details);
    textfield_->OnGestureEvent(&tap);
  
    // Test cursor at run boundary and with empty selection.
    textfield_->SelectSelectionModel(
        gfx::SelectionModel(3, gfx::CURSOR_BACKWARD));
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Test selection range inside one run and starts or ends at run boundary.
    textfield_->SelectRange(gfx::Range(2, 3));
    VerifyHandlePositions(false, true, FROM_HERE);
  
    textfield_->SelectRange(gfx::Range(3, 2));
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // TODO(mfomitchev): crbug.com/429705
    // The correct behavior for handles in mixed ltr/rtl text line is not known,
    // so passing false for |check_direction| in some of these tests.
    textfield_->SelectRange(gfx::Range(3, 4));
    VerifyHandlePositions(false, false, FROM_HERE);
  
    textfield_->SelectRange(gfx::Range(4, 3));
    VerifyHandlePositions(false, false, FROM_HERE);
  
    textfield_->SelectRange(gfx::Range(3, 6));
    VerifyHandlePositions(false, false, FROM_HERE);
  
    textfield_->SelectRange(gfx::Range(6, 3));
    VerifyHandlePositions(false, false, FROM_HERE);
  
    // Test selection range accross runs.
    textfield_->SelectRange(gfx::Range(0, 6));
    VerifyHandlePositions(false, true, FROM_HERE);
  
    textfield_->SelectRange(gfx::Range(6, 0));
    VerifyHandlePositions(false, true, FROM_HERE);
  
    textfield_->SelectRange(gfx::Range(1, 4));
    VerifyHandlePositions(false, true, FROM_HERE);
  
    textfield_->SelectRange(gfx::Range(4, 1));
    VerifyHandlePositions(false, true, FROM_HERE);
  }
  
  // Tests if the SelectRect callback is called appropriately when selection
  // handles are moved.
  TEST_F(TouchSelectionControllerImplTest, SelectRectCallbackTest) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    CreateTextfield();
    textfield_->SetText(ASCIIToUTF16("textfield with selected text"));
    // Tap the textfield to invoke touch selection.
    ui::GestureEventDetails details(ui::ET_GESTURE_TAP);
    details.set_tap_count(1);
    ui::GestureEvent tap(0, 0, 0, base::TimeTicks(), details);
    textfield_->OnGestureEvent(&tap);
    textfield_->SelectRange(gfx::Range(3, 7));
  
    gfx::Point textfield_origin;
    textfield_->ConvertPointToScreen(&textfield_origin);
  
    EXPECT_EQ("tfie", UTF16ToUTF8(textfield_->GetSelectedText()));
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Drag selection handle 2 to right by 3 chars.
    const gfx::FontList& font_list = textfield_->GetFontList();
    int x = gfx::Canvas::GetStringWidth(ASCIIToUTF16("ld "), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(x, 0), 2);
    EXPECT_EQ("tfield ", UTF16ToUTF8(textfield_->GetSelectedText()));
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Drag selection handle 1 to the left by a large amount (selection should
    // just stick to the beginning of the textfield).
    SimulateSelectionHandleDrag(gfx::Vector2d(-50, 0), 1);
    EXPECT_EQ("textfield ", UTF16ToUTF8(textfield_->GetSelectedText()));
    VerifyHandlePositions(true, true, FROM_HERE);
  
    // Drag selection handle 1 across selection handle 2.
    x = gfx::Canvas::GetStringWidth(ASCIIToUTF16("textfield with "), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(x, 0), 1);
    EXPECT_EQ("with ", UTF16ToUTF8(textfield_->GetSelectedText()));
    VerifyHandlePositions(true, true, FROM_HERE);
  
    // Drag selection handle 2 across selection handle 1.
    x = gfx::Canvas::GetStringWidth(ASCIIToUTF16("with selected "), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(x, 0), 2);
    EXPECT_EQ("selected ", UTF16ToUTF8(textfield_->GetSelectedText()));
    VerifyHandlePositions(false, true, FROM_HERE);
  }
  
  TEST_F(TouchSelectionControllerImplTest, SelectRectInBidiCallbackTest) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    CreateTextfield();
    textfield_->SetText(WideToUTF16(L"abc\x05e1\x05e2\x05e3" L"def"));
    // Tap the textfield to invoke touch selection.
    ui::GestureEventDetails details(ui::ET_GESTURE_TAP);
    details.set_tap_count(1);
    ui::GestureEvent tap(0, 0, 0, base::TimeTicks(), details);
    textfield_->OnGestureEvent(&tap);
  
    // Select [c] from left to right.
    textfield_->SelectRange(gfx::Range(2, 3));
    EXPECT_EQ(WideToUTF16(L"c"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Drag selection handle 2 to right by 1 char.
    const gfx::FontList& font_list = textfield_->GetFontList();
    int x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e3"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(x, 0), 2);
    EXPECT_EQ(WideToUTF16(L"c\x05e1\x05e2"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Drag selection handle 1 to left by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"b"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(-x, 0), 1);
    EXPECT_EQ(WideToUTF16(L"bc\x05e1\x05e2"), textfield_->GetSelectedText());
    VerifyHandlePositions(true, true, FROM_HERE);
  
    // Select [c] from right to left.
    textfield_->SelectRange(gfx::Range(3, 2));
    EXPECT_EQ(WideToUTF16(L"c"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Drag selection handle 1 to right by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e3"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(x, 0), 1);
    EXPECT_EQ(WideToUTF16(L"c\x05e1\x05e2"), textfield_->GetSelectedText());
    VerifyHandlePositions(true, true, FROM_HERE);
  
    // Drag selection handle 2 to left by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"b"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(-x, 0), 2);
    EXPECT_EQ(WideToUTF16(L"bc\x05e1\x05e2"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Select [\x5e1] from right to left.
    textfield_->SelectRange(gfx::Range(3, 4));
    EXPECT_EQ(WideToUTF16(L"\x05e1"), textfield_->GetSelectedText());
    // TODO(mfomitchev): crbug.com/429705
    // The correct behavior for handles in mixed ltr/rtl text line is not known,
    // so passing false for |check_direction| in some of these tests.
    VerifyHandlePositions(false, false, FROM_HERE);
  
    /* TODO(xji): for bidi text "abcDEF" whose display is "abcFEDhij", when click
       right of 'D' and select [D] then move the left selection handle to left
       by one character, it should select [ED], instead it selects [F].
       Reason: click right of 'D' and left of 'h' return the same x-axis position,
       pass this position to FindCursorPosition() returns index of 'h'. which
       means the selection start changed from 3 to 6.
       Need further investigation on whether this is a bug in Pango and how to
       work around it.
    // Drag selection handle 2 to left by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e2"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(-x, 0), 2);
    EXPECT_EQ(WideToUTF16(L"\x05e1\x05e2"), textfield_->GetSelectedText());
    VERIFY_HANDLE_POSITIONS(false);
    */
  
    // Drag selection handle 1 to right by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"d"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(x, 0), 1);
    EXPECT_EQ(WideToUTF16(L"\x05e2\x05e3" L"d"), textfield_->GetSelectedText());
    VerifyHandlePositions(true, true, FROM_HERE);
  
    // Select [\x5e1] from left to right.
    textfield_->SelectRange(gfx::Range(4, 3));
    EXPECT_EQ(WideToUTF16(L"\x05e1"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, false, FROM_HERE);
  
    /* TODO(xji): see detail of above commented out test case.
    // Drag selection handle 1 to left by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e2"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(-x, 0), 1);
    EXPECT_EQ(WideToUTF16(L"\x05e1\x05e2"), textfield_->GetSelectedText());
    VERIFY_HANDLE_POSITIONS(true);
    */
  
    // Drag selection handle 2 to right by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"d"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(x, 0), 2);
    EXPECT_EQ(WideToUTF16(L"\x05e2\x05e3" L"d"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Select [\x05r3] from right to left.
    textfield_->SelectRange(gfx::Range(5, 6));
    EXPECT_EQ(WideToUTF16(L"\x05e3"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, false, FROM_HERE);
  
    // Drag selection handle 2 to left by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"c"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(-x, 0), 2);
    EXPECT_EQ(WideToUTF16(L"c\x05e1\x05e2"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Drag selection handle 1 to right by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e2"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(x, 0), 1);
    EXPECT_EQ(WideToUTF16(L"c\x05e1"), textfield_->GetSelectedText());
    VerifyHandlePositions(true, true, FROM_HERE);
  
    // Select [\x05r3] from left to right.
    textfield_->SelectRange(gfx::Range(6, 5));
    EXPECT_EQ(WideToUTF16(L"\x05e3"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, false, FROM_HERE);
  
    // Drag selection handle 1 to left by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"c"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(-x, 0), 1);
    EXPECT_EQ(WideToUTF16(L"c\x05e1\x05e2"), textfield_->GetSelectedText());
    VerifyHandlePositions(true, true, FROM_HERE);
  
    // Drag selection handle 2 to right by 1 char.
    x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e2"), font_list);
    SimulateSelectionHandleDrag(gfx::Vector2d(x, 0), 2);
    EXPECT_EQ(WideToUTF16(L"c\x05e1"), textfield_->GetSelectedText());
    VerifyHandlePositions(false, false, FROM_HERE);
  }
  
  TEST_F(TouchSelectionControllerImplTest,
         HiddenSelectionHandleRetainsCursorPosition) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    static const uint32_t selection_start = 10u;
    SetupSelectionInvisibleHandle(selection_start);
    // Drag the visible handle around and make sure the selection end point of the
    // invisible handle does not change.
    size_t visible_handle_position = textfield_->GetSelectedRange().end();
    for (int i = 0; i < 10; ++i) {
      static const int drag_diff = -10;
      SimulateSelectionHandleDrag(gfx::Vector2d(drag_diff, 0), 2);
      // Make sure that the visible handle is being dragged.
      EXPECT_NE(visible_handle_position, textfield_->GetSelectedRange().end());
      visible_handle_position = textfield_->GetSelectedRange().end();
      EXPECT_EQ((size_t) 10, textfield_->GetSelectedRange().start());
    }
  }
  
  // Tests that we can handle the hidden handle getting exposed as a result of a
  // drag and that it maintains the correct orientation when exposed.
  TEST_F(TouchSelectionControllerImplTest, HiddenSelectionHandleExposed) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    static const uint32_t selection_start = 0u;
    SetupSelectionInvisibleHandle(selection_start);
  
    // Drag the handle until the selection shrinks such that the other handle
    // becomes visible.
    while (!IsSelectionHandle1Visible()) {
      static const int drag_diff = -10;
      SimulateSelectionHandleDrag(gfx::Vector2d(drag_diff, 0), 2);
    }
  
    // Confirm that the exposed handle maintains the LEFT orientation
    // (and does not reset to gfx::SelectionBound::Type::CENTER).
    EXPECT_EQ(gfx::SelectionBound::Type::LEFT, GetSelectionHandle1Type());
  }
  
  TEST_F(TouchSelectionControllerImplTest,
         DoubleTapInTextfieldWithCursorHandleShouldSelectText) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    CreateTextfield();
    textfield_->SetText(ASCIIToUTF16("some text"));
    ui::test::EventGenerator generator(
        textfield_->GetWidget()->GetNativeView()->GetRootWindow());
  
    // Tap the textfield to invoke touch selection.
    generator.GestureTapAt(gfx::Point(10, 10));
  
    // Cursor handle should be visible.
    EXPECT_FALSE(textfield_->HasSelection());
    VerifyHandlePositions(false, true, FROM_HERE);
  
    // Double tap on the cursor handle position. We want to check that the cursor
    // handle is not eating the event and that the event is falling through to the
    // textfield.
    gfx::Point cursor_pos = GetCursorHandleBounds().origin();
    cursor_pos.Offset(GetCursorHandleBounds().width() / 2, 0);
    generator.GestureTapAt(cursor_pos);
    generator.GestureTapAt(cursor_pos);
    EXPECT_TRUE(textfield_->HasSelection());
  }
  
  // A simple implementation of TouchEditable that allows faking cursor position
  // inside its boundaries.
  class TestTouchEditable : public ui::TouchEditable {
   public:
    explicit TestTouchEditable(aura::Window* window)
        : window_(window) {
      DCHECK(window);
    }
  
    void set_bounds(const gfx::Rect& bounds) {
      bounds_ = bounds;
    }
  
    void set_cursor_rect(const gfx::RectF& cursor_rect) {
      cursor_bound_.SetEdge(cursor_rect.origin(), cursor_rect.bottom_left());
      cursor_bound_.set_type(gfx::SelectionBound::Type::CENTER);
    }
  
    ~TestTouchEditable() override {}
  
   private:
    // Overridden from ui::TouchEditable.
    void SelectRect(const gfx::Point& start, const gfx::Point& end) override {
      NOTREACHED();
    }
    void MoveCaretTo(const gfx::Point& point) override { NOTREACHED(); }
    void GetSelectionEndPoints(gfx::SelectionBound* anchor,
                               gfx::SelectionBound* focus) override {
      *anchor = *focus = cursor_bound_;
    }
    gfx::Rect GetBounds() override { return gfx::Rect(bounds_.size()); }
    gfx::NativeView GetNativeView() const override { return window_; }
    void ConvertPointToScreen(gfx::Point* point) override {
      aura::client::ScreenPositionClient* screen_position_client =
          aura::client::GetScreenPositionClient(window_->GetRootWindow());
      if (screen_position_client)
        screen_position_client->ConvertPointToScreen(window_, point);
    }
    void ConvertPointFromScreen(gfx::Point* point) override {
      aura::client::ScreenPositionClient* screen_position_client =
          aura::client::GetScreenPositionClient(window_->GetRootWindow());
      if (screen_position_client)
        screen_position_client->ConvertPointFromScreen(window_, point);
    }
    bool DrawsHandles() override { return false; }
    void OpenContextMenu(const gfx::Point& anchor) override { NOTREACHED(); }
    void DestroyTouchSelection() override { NOTREACHED(); }
  
    // Overridden from ui::SimpleMenuModel::Delegate.
    bool IsCommandIdChecked(int command_id) const override {
      NOTREACHED();
      return false;
    }
    bool IsCommandIdEnabled(int command_id) const override {
      NOTREACHED();
      return false;
    }
    void ExecuteCommand(int command_id, int event_flags) override {
      NOTREACHED();
    }
  
    aura::Window* window_;
  
    // Boundaries of the client view.
    gfx::Rect bounds_;
  
    // Cursor position inside the client view.
    //gfx::Rect cursor_rect_;
    gfx::SelectionBound cursor_bound_;
  
    DISALLOW_COPY_AND_ASSIGN(TestTouchEditable);
  };
  
  // Tests if the touch editing handle is shown or hidden properly according to
  // the cursor position relative to the client boundaries.
  TEST_F(TouchSelectionControllerImplTest,
         VisibilityOfHandleRegardingClientBounds) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    CreateWidget();
  
    TestTouchEditable touch_editable(widget_->GetNativeView());
    std::unique_ptr<ui::TouchEditingControllerDeprecated>
        touch_selection_controller(
            ui::TouchEditingControllerDeprecated::Create(&touch_editable));
  
    touch_editable.set_bounds(gfx::Rect(0, 0, 100, 20));
  
    // Put the cursor completely inside the client bounds. Handle should be
    // visible.
    touch_editable.set_cursor_rect(gfx::RectF(2.f, 0.f, 1.f, 20.f));
    touch_selection_controller->SelectionChanged();
    EXPECT_TRUE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
  
    // Move the cursor up such that |kBarMinHeight| pixels are still in the client
    // bounds. Handle should still be visible.
    touch_editable.set_cursor_rect(
        gfx::RectF(2.f, kBarMinHeight - 20.f, 1.f, 20.f));
    touch_selection_controller->SelectionChanged();
    EXPECT_TRUE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
  
    // Move the cursor up such that less than |kBarMinHeight| pixels are in the
    // client bounds. Handle should be hidden.
    touch_editable.set_cursor_rect(
        gfx::RectF(2.f, kBarMinHeight - 20.f - 1.f, 1.f, 20.f));
    touch_selection_controller->SelectionChanged();
    EXPECT_FALSE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
  
    // Move the Cursor down such that |kBarBottomAllowance| pixels are out of the
    // client bounds. Handle should be visible.
    touch_editable.set_cursor_rect(
        gfx::RectF(2.f, kBarBottomAllowance, 1.f, 20.f));
    touch_selection_controller->SelectionChanged();
    EXPECT_TRUE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
  
    // Move the cursor down such that more than |kBarBottomAllowance| pixels are
    // out of the client bounds. Handle should be hidden.
    touch_editable.set_cursor_rect(
        gfx::RectF(2.f, kBarBottomAllowance + 1.f, 1.f, 20.f));
    touch_selection_controller->SelectionChanged();
    EXPECT_FALSE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
  
    touch_selection_controller.reset();
  }
  
  TEST_F(TouchSelectionControllerImplTest, HandlesStackAboveParent) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    ui::EventTarget* root = GetContext();
    ui::EventTargeter* targeter = root->GetEventTargeter();
  
    // Create the first window containing a Views::Textfield.
    CreateTextfield();
    aura::Window* window1 = textfield_widget_->GetNativeView();
  
    // Start touch editing, check that the handle is above the first window, and
    // end touch editing.
    StartTouchEditing();
    gfx::Point test_point = GetCursorHandleDragPoint();
    ui::MouseEvent test_event1(ui::ET_MOUSE_MOVED, test_point, test_point,
                               ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
    EXPECT_EQ(GetCursorHandleNativeView(),
              targeter->FindTargetForEvent(root, &test_event1));
    EndTouchEditing();
  
    // Create the second (empty) window over the first one.
    CreateWidget();
    aura::Window* window2 = widget_->GetNativeView();
  
    // Start touch editing (in the first window) and check that the handle is not
    // above the second window.
    StartTouchEditing();
    ui::MouseEvent test_event2(ui::ET_MOUSE_MOVED, test_point, test_point,
                               ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
    EXPECT_EQ(window2, targeter->FindTargetForEvent(root, &test_event2));
  
    // Move the first window to top and check that the handle is kept above the
    // first window.
    window1->GetRootWindow()->StackChildAtTop(window1);
    ui::MouseEvent test_event3(ui::ET_MOUSE_MOVED, test_point, test_point,
                               ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
    EXPECT_EQ(GetCursorHandleNativeView(),
              targeter->FindTargetForEvent(root, &test_event3));
  }
  
  TEST_F(TouchSelectionControllerImplTest, MouseEventDeactivatesTouchSelection) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    CreateTextfield();
    EXPECT_FALSE(GetSelectionController());
  
    ui::test::EventGenerator generator(
        textfield_widget_->GetNativeView()->GetRootWindow());
  
    generator.set_current_location(gfx::Point(5, 5));
    RunPendingMessages();
  
    // Start touch editing; then move mouse over the textfield and ensure it
    // deactivates touch selection.
    StartTouchEditing();
    EXPECT_TRUE(GetSelectionController());
    generator.MoveMouseTo(gfx::Point(5, 10));
    RunPendingMessages();
    EXPECT_FALSE(GetSelectionController());
  
    generator.MoveMouseTo(gfx::Point(5, 50));
    RunPendingMessages();
  
    // Start touch editing; then move mouse out of the textfield, but inside the
    // winow and ensure it deactivates touch selection.
    StartTouchEditing();
    EXPECT_TRUE(GetSelectionController());
    generator.MoveMouseTo(gfx::Point(5, 55));
    RunPendingMessages();
    EXPECT_FALSE(GetSelectionController());
  
    generator.MoveMouseTo(gfx::Point(5, 500));
    RunPendingMessages();
  
    // Start touch editing; then move mouse out of the textfield and window and
    // ensure it deactivates touch selection.
    StartTouchEditing();
    EXPECT_TRUE(GetSelectionController());
    generator.MoveMouseTo(5, 505);
    RunPendingMessages();
    EXPECT_FALSE(GetSelectionController());
  }
  
  TEST_F(TouchSelectionControllerImplTest, MouseCaptureChangedEventIgnored) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    CreateTextfield();
    EXPECT_FALSE(GetSelectionController());
  
    ui::test::EventGenerator generator(
        textfield_widget_->GetNativeView()->GetRootWindow());
    RunPendingMessages();
  
    // Start touch editing; then generate a mouse-capture-changed event and ensure
    // it does not deactivate touch selection.
    StartTouchEditing();
    EXPECT_TRUE(GetSelectionController());
    ui::MouseEvent capture_changed(ui::ET_MOUSE_CAPTURE_CHANGED, gfx::Point(5, 5),
                                   gfx::Point(5, 5), base::TimeTicks(), 0, 0);
    generator.Dispatch(&capture_changed);
    RunPendingMessages();
    EXPECT_TRUE(GetSelectionController());
  }
  
  TEST_F(TouchSelectionControllerImplTest, KeyEventDeactivatesTouchSelection) {
    // TODO: see comment in SetUp().
    if (IsAuraMusClient())
      return;
  
    CreateTextfield();
    EXPECT_FALSE(GetSelectionController());
  
    ui::test::EventGenerator generator(
        textfield_widget_->GetNativeView()->GetRootWindow());
  
    RunPendingMessages();
  
    // Start touch editing; then press a key and ensure it deactivates touch
    // selection.
    StartTouchEditing();
    EXPECT_TRUE(GetSelectionController());
    generator.PressKey(ui::VKEY_A, 0);
    RunPendingMessages();
    EXPECT_FALSE(GetSelectionController());
  }
  
  }  // namespace views
  