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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/command_line.h"
      6 #include "base/strings/utf_string_conversions.h"
      7 #include "grit/ui_resources.h"
      8 #include "ui/aura/client/screen_position_client.h"
      9 #include "ui/aura/test/event_generator.h"
     10 #include "ui/aura/window.h"
     11 #include "ui/base/resource/resource_bundle.h"
     12 #include "ui/base/touch/touch_editing_controller.h"
     13 #include "ui/base/ui_base_switches.h"
     14 #include "ui/gfx/canvas.h"
     15 #include "ui/gfx/point.h"
     16 #include "ui/gfx/rect.h"
     17 #include "ui/gfx/render_text.h"
     18 #include "ui/views/controls/textfield/textfield.h"
     19 #include "ui/views/controls/textfield/textfield_test_api.h"
     20 #include "ui/views/test/views_test_base.h"
     21 #include "ui/views/touchui/touch_selection_controller_impl.h"
     22 #include "ui/views/views_touch_selection_controller_factory.h"
     23 #include "ui/views/widget/widget.h"
     24 
     25 using base::ASCIIToUTF16;
     26 using base::UTF16ToUTF8;
     27 using base::WideToUTF16;
     28 
     29 namespace {
     30 // Should match kSelectionHandlePadding in touch_selection_controller.
     31 const int kPadding = 10;
     32 
     33 // Should match kSelectionHandleBarMinHeight in touch_selection_controller.
     34 const int kBarMinHeight = 5;
     35 
     36 // Should match kSelectionHandleBarBottomAllowance in
     37 // touch_selection_controller.
     38 const int kBarBottomAllowance = 3;
     39 
     40 // Should match kMenuButtonWidth in touch_editing_menu.
     41 const int kMenuButtonWidth = 63;
     42 
     43 // Should match size of kMenuCommands array in touch_editing_menu.
     44 const int kMenuCommandCount = 3;
     45 
     46 gfx::Image* GetHandleImage() {
     47   static gfx::Image* handle_image = NULL;
     48   if (!handle_image) {
     49     handle_image = &ui::ResourceBundle::GetSharedInstance().GetImageNamed(
     50         IDR_TEXT_SELECTION_HANDLE);
     51   }
     52   return handle_image;
     53 }
     54 
     55 gfx::Size GetHandleImageSize() {
     56   return GetHandleImage()->Size();
     57 }
     58 }  // namespace
     59 
     60 namespace views {
     61 
     62 class TouchSelectionControllerImplTest : public ViewsTestBase {
     63  public:
     64   TouchSelectionControllerImplTest()
     65       : textfield_widget_(NULL),
     66         widget_(NULL),
     67         textfield_(NULL),
     68         views_tsc_factory_(new ViewsTouchSelectionControllerFactory) {
     69     CommandLine::ForCurrentProcess()->AppendSwitch(
     70         switches::kEnableTouchEditing);
     71     ui::TouchSelectionControllerFactory::SetInstance(views_tsc_factory_.get());
     72   }
     73 
     74   virtual ~TouchSelectionControllerImplTest() {
     75     ui::TouchSelectionControllerFactory::SetInstance(NULL);
     76   }
     77 
     78   virtual void TearDown() {
     79     if (textfield_widget_ && !textfield_widget_->IsClosed())
     80       textfield_widget_->Close();
     81     if (widget_ && !widget_->IsClosed())
     82       widget_->Close();
     83     ViewsTestBase::TearDown();
     84   }
     85 
     86   void CreateTextfield() {
     87     textfield_ = new Textfield();
     88     textfield_widget_ = new Widget;
     89     Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
     90     params.bounds = gfx::Rect(0, 0, 200, 200);
     91     textfield_widget_->Init(params);
     92     View* container = new View();
     93     textfield_widget_->SetContentsView(container);
     94     container->AddChildView(textfield_);
     95 
     96     textfield_->SetBoundsRect(gfx::Rect(0, 0, 200, 20));
     97     textfield_->set_id(1);
     98     textfield_widget_->Show();
     99 
    100     textfield_->RequestFocus();
    101 
    102     textfield_test_api_.reset(new TextfieldTestApi(textfield_));
    103   }
    104 
    105   void CreateWidget() {
    106     widget_ = new Widget;
    107     Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
    108     params.bounds = gfx::Rect(0, 0, 200, 200);
    109     widget_->Init(params);
    110     widget_->Show();
    111   }
    112 
    113  protected:
    114   static bool IsCursorHandleVisibleFor(
    115       ui::TouchSelectionController* controller) {
    116     TouchSelectionControllerImpl* impl =
    117         static_cast<TouchSelectionControllerImpl*>(controller);
    118     return impl->IsCursorHandleVisible();
    119   }
    120 
    121   gfx::Rect GetCursorRect(const gfx::SelectionModel& sel) {
    122     return textfield_test_api_->GetRenderText()->GetCursorBounds(sel, true);
    123   }
    124 
    125   gfx::Point GetCursorPosition(const gfx::SelectionModel& sel) {
    126     gfx::Rect cursor_bounds = GetCursorRect(sel);
    127     return gfx::Point(cursor_bounds.x(), cursor_bounds.y());
    128   }
    129 
    130   TouchSelectionControllerImpl* GetSelectionController() {
    131     return static_cast<TouchSelectionControllerImpl*>(
    132         textfield_test_api_->touch_selection_controller());
    133   }
    134 
    135   void StartTouchEditing() {
    136     textfield_test_api_->CreateTouchSelectionControllerAndNotifyIt();
    137   }
    138 
    139   void EndTouchEditing() {
    140     textfield_test_api_->ResetTouchSelectionController();
    141   }
    142 
    143   void SimulateSelectionHandleDrag(gfx::Point p, int selection_handle) {
    144     TouchSelectionControllerImpl* controller = GetSelectionController();
    145     // Do the work of OnMousePressed().
    146     if (selection_handle == 1)
    147       controller->SetDraggingHandle(controller->selection_handle_1_.get());
    148     else
    149       controller->SetDraggingHandle(controller->selection_handle_2_.get());
    150 
    151     // Offset the drag position by the selection handle radius since it is
    152     // supposed to be in the coordinate system of the handle.
    153     p.Offset(GetHandleImageSize().width() / 2 + kPadding, 0);
    154     controller->SelectionHandleDragged(p);
    155 
    156     // Do the work of OnMouseReleased().
    157     controller->dragging_handle_ = NULL;
    158   }
    159 
    160   gfx::NativeView GetCursorHandleNativeView() {
    161     return GetSelectionController()->GetCursorHandleNativeView();
    162   }
    163 
    164   gfx::Point GetSelectionHandle1Position() {
    165     return GetSelectionController()->GetSelectionHandle1Position();
    166   }
    167 
    168   gfx::Point GetSelectionHandle2Position() {
    169     return GetSelectionController()->GetSelectionHandle2Position();
    170   }
    171 
    172   gfx::Point GetCursorHandlePosition() {
    173     return GetSelectionController()->GetCursorHandlePosition();
    174   }
    175 
    176   bool IsSelectionHandle1Visible() {
    177     return GetSelectionController()->IsSelectionHandle1Visible();
    178   }
    179 
    180   bool IsSelectionHandle2Visible() {
    181     return GetSelectionController()->IsSelectionHandle2Visible();
    182   }
    183 
    184   bool IsCursorHandleVisible() {
    185     return GetSelectionController()->IsCursorHandleVisible();
    186   }
    187 
    188   gfx::RenderText* GetRenderText() {
    189     return textfield_test_api_->GetRenderText();
    190   }
    191 
    192   gfx::Point GetCursorHandleDragPoint() {
    193     gfx::Point point = GetCursorHandlePosition();
    194     const gfx::SelectionModel& sel = textfield_->GetSelectionModel();
    195     int cursor_height = GetCursorRect(sel).height();
    196     point.Offset(GetHandleImageSize().width() / 2 + kPadding,
    197                  GetHandleImageSize().height() / 2 + cursor_height);
    198     return point;
    199   }
    200 
    201   Widget* textfield_widget_;
    202   Widget* widget_;
    203 
    204   Textfield* textfield_;
    205   scoped_ptr<TextfieldTestApi> textfield_test_api_;
    206   scoped_ptr<ViewsTouchSelectionControllerFactory> views_tsc_factory_;
    207 
    208  private:
    209   DISALLOW_COPY_AND_ASSIGN(TouchSelectionControllerImplTest);
    210 };
    211 
    212 // If textfield has selection, this macro verifies that the selection handles
    213 // are visible and at the correct positions (at the end points of selection).
    214 // |cursor_at_selection_handle_1| is used to decide whether selection
    215 // handle 1's position is matched against the start of selection or the end.
    216 #define VERIFY_HANDLE_POSITIONS(cursor_at_selection_handle_1)                  \
    217 {                                                                              \
    218     gfx::SelectionModel sel = textfield_->GetSelectionModel();                 \
    219     if (textfield_->HasSelection()) {                                          \
    220       EXPECT_TRUE(IsSelectionHandle1Visible());                                \
    221       EXPECT_TRUE(IsSelectionHandle2Visible());                                \
    222       EXPECT_FALSE(IsCursorHandleVisible());                                   \
    223       gfx::SelectionModel sel_start = GetRenderText()->                        \
    224                                       GetSelectionModelForSelectionStart();    \
    225       gfx::Point selection_start = GetCursorPosition(sel_start);               \
    226       gfx::Point selection_end = GetCursorPosition(sel);                       \
    227       gfx::Point sh1 = GetSelectionHandle1Position();                          \
    228       gfx::Point sh2 = GetSelectionHandle2Position();                          \
    229       sh1.Offset(GetHandleImageSize().width() / 2 + kPadding, 0);              \
    230       sh2.Offset(GetHandleImageSize().width() / 2 + kPadding, 0);              \
    231       if (cursor_at_selection_handle_1) {                                      \
    232         EXPECT_EQ(sh1, selection_end);                                         \
    233         EXPECT_EQ(sh2, selection_start);                                       \
    234       } else {                                                                 \
    235         EXPECT_EQ(sh1, selection_start);                                       \
    236         EXPECT_EQ(sh2, selection_end);                                         \
    237       }                                                                        \
    238     } else {                                                                   \
    239       EXPECT_FALSE(IsSelectionHandle1Visible());                               \
    240       EXPECT_FALSE(IsSelectionHandle2Visible());                               \
    241       EXPECT_TRUE(IsCursorHandleVisible());                                    \
    242       gfx::Point cursor_pos = GetCursorPosition(sel);                          \
    243       gfx::Point ch_pos = GetCursorHandlePosition();                           \
    244       ch_pos.Offset(GetHandleImageSize().width() / 2 + kPadding, 0);           \
    245       EXPECT_EQ(ch_pos, cursor_pos);                                           \
    246     }                                                                          \
    247 }
    248 
    249 // Tests that the selection handles are placed appropriately when selection in
    250 // a Textfield changes.
    251 TEST_F(TouchSelectionControllerImplTest, SelectionInTextfieldTest) {
    252   CreateTextfield();
    253   textfield_->SetText(ASCIIToUTF16("some text"));
    254   // Tap the textfield to invoke touch selection.
    255   ui::GestureEvent tap(ui::ET_GESTURE_TAP, 0, 0, 0, base::TimeDelta(),
    256       ui::GestureEventDetails(ui::ET_GESTURE_TAP, 1.0f, 0.0f), 0);
    257   textfield_->OnGestureEvent(&tap);
    258 
    259   // Test selecting a range.
    260   textfield_->SelectRange(gfx::Range(3, 7));
    261   VERIFY_HANDLE_POSITIONS(false);
    262 
    263   // Test selecting everything.
    264   textfield_->SelectAll(false);
    265   VERIFY_HANDLE_POSITIONS(false);
    266 
    267   // Test with no selection.
    268   textfield_->ClearSelection();
    269   VERIFY_HANDLE_POSITIONS(false);
    270 
    271   // Test with lost focus.
    272   textfield_widget_->GetFocusManager()->ClearFocus();
    273   EXPECT_FALSE(GetSelectionController());
    274 
    275   // Test with focus re-gained.
    276   textfield_widget_->GetFocusManager()->SetFocusedView(textfield_);
    277   EXPECT_FALSE(GetSelectionController());
    278   textfield_->OnGestureEvent(&tap);
    279   VERIFY_HANDLE_POSITIONS(false);
    280 }
    281 
    282 // Tests that the selection handles are placed appropriately in bidi text.
    283 TEST_F(TouchSelectionControllerImplTest, SelectionInBidiTextfieldTest) {
    284   CreateTextfield();
    285   textfield_->SetText(WideToUTF16(L"abc\x05d0\x05d1\x05d2"));
    286   // Tap the textfield to invoke touch selection.
    287   ui::GestureEvent tap(ui::ET_GESTURE_TAP, 0, 0, 0, base::TimeDelta(),
    288       ui::GestureEventDetails(ui::ET_GESTURE_TAP, 1.0f, 0.0f), 0);
    289   textfield_->OnGestureEvent(&tap);
    290 
    291   // Test cursor at run boundary and with empty selection.
    292   textfield_->SelectSelectionModel(
    293       gfx::SelectionModel(3, gfx::CURSOR_BACKWARD));
    294   VERIFY_HANDLE_POSITIONS(false);
    295 
    296   // Test selection range inside one run and starts or ends at run boundary.
    297   textfield_->SelectRange(gfx::Range(2, 3));
    298   VERIFY_HANDLE_POSITIONS(false);
    299 
    300   textfield_->SelectRange(gfx::Range(3, 2));
    301   VERIFY_HANDLE_POSITIONS(false);
    302 
    303   textfield_->SelectRange(gfx::Range(3, 4));
    304   VERIFY_HANDLE_POSITIONS(false);
    305 
    306   textfield_->SelectRange(gfx::Range(4, 3));
    307   VERIFY_HANDLE_POSITIONS(false);
    308 
    309   textfield_->SelectRange(gfx::Range(3, 6));
    310   VERIFY_HANDLE_POSITIONS(false);
    311 
    312   textfield_->SelectRange(gfx::Range(6, 3));
    313   VERIFY_HANDLE_POSITIONS(false);
    314 
    315   // Test selection range accross runs.
    316   textfield_->SelectRange(gfx::Range(0, 6));
    317   VERIFY_HANDLE_POSITIONS(false);
    318 
    319   textfield_->SelectRange(gfx::Range(6, 0));
    320   VERIFY_HANDLE_POSITIONS(false);
    321 
    322   textfield_->SelectRange(gfx::Range(1, 4));
    323   VERIFY_HANDLE_POSITIONS(false);
    324 
    325   textfield_->SelectRange(gfx::Range(4, 1));
    326   VERIFY_HANDLE_POSITIONS(false);
    327 }
    328 
    329 // Tests if the SelectRect callback is called appropriately when selection
    330 // handles are moved.
    331 TEST_F(TouchSelectionControllerImplTest, SelectRectCallbackTest) {
    332   CreateTextfield();
    333   textfield_->SetText(ASCIIToUTF16("textfield with selected text"));
    334   // Tap the textfield to invoke touch selection.
    335   ui::GestureEvent tap(ui::ET_GESTURE_TAP, 0, 0, 0, base::TimeDelta(),
    336       ui::GestureEventDetails(ui::ET_GESTURE_TAP, 1.0f, 0.0f), 0);
    337   textfield_->OnGestureEvent(&tap);
    338   textfield_->SelectRange(gfx::Range(3, 7));
    339 
    340   EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "tfie");
    341   VERIFY_HANDLE_POSITIONS(false);
    342 
    343   // Drag selection handle 2 to right by 3 chars.
    344   const gfx::FontList& font_list = textfield_->GetFontList();
    345   int x = gfx::Canvas::GetStringWidth(ASCIIToUTF16("ld "), font_list);
    346   SimulateSelectionHandleDrag(gfx::Point(x, 0), 2);
    347   EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "tfield ");
    348   VERIFY_HANDLE_POSITIONS(false);
    349 
    350   // Drag selection handle 1 to the left by a large amount (selection should
    351   // just stick to the beginning of the textfield).
    352   SimulateSelectionHandleDrag(gfx::Point(-50, 0), 1);
    353   EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "textfield ");
    354   VERIFY_HANDLE_POSITIONS(true);
    355 
    356   // Drag selection handle 1 across selection handle 2.
    357   x = gfx::Canvas::GetStringWidth(ASCIIToUTF16("textfield with "), font_list);
    358   SimulateSelectionHandleDrag(gfx::Point(x, 0), 1);
    359   EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "with ");
    360   VERIFY_HANDLE_POSITIONS(true);
    361 
    362   // Drag selection handle 2 across selection handle 1.
    363   x = gfx::Canvas::GetStringWidth(ASCIIToUTF16("with selected "), font_list);
    364   SimulateSelectionHandleDrag(gfx::Point(x, 0), 2);
    365   EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "selected ");
    366   VERIFY_HANDLE_POSITIONS(false);
    367 }
    368 
    369 TEST_F(TouchSelectionControllerImplTest, SelectRectInBidiCallbackTest) {
    370   CreateTextfield();
    371   textfield_->SetText(WideToUTF16(L"abc\x05e1\x05e2\x05e3" L"def"));
    372   // Tap the textfield to invoke touch selection.
    373   ui::GestureEvent tap(ui::ET_GESTURE_TAP, 0, 0, 0, base::TimeDelta(),
    374       ui::GestureEventDetails(ui::ET_GESTURE_TAP, 1.0f, 0.0f), 0);
    375   textfield_->OnGestureEvent(&tap);
    376 
    377   // Select [c] from left to right.
    378   textfield_->SelectRange(gfx::Range(2, 3));
    379   EXPECT_EQ(WideToUTF16(L"c"), textfield_->GetSelectedText());
    380   VERIFY_HANDLE_POSITIONS(false);
    381 
    382   // Drag selection handle 2 to right by 1 char.
    383   const gfx::FontList& font_list = textfield_->GetFontList();
    384   int x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e3"), font_list);
    385   SimulateSelectionHandleDrag(gfx::Point(x, 0), 2);
    386   EXPECT_EQ(WideToUTF16(L"c\x05e1\x05e2"), textfield_->GetSelectedText());
    387   VERIFY_HANDLE_POSITIONS(false);
    388 
    389   // Drag selection handle 1 to left by 1 char.
    390   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"b"), font_list);
    391   SimulateSelectionHandleDrag(gfx::Point(-x, 0), 1);
    392   EXPECT_EQ(WideToUTF16(L"bc\x05e1\x05e2"), textfield_->GetSelectedText());
    393   VERIFY_HANDLE_POSITIONS(true);
    394 
    395   // Select [c] from right to left.
    396   textfield_->SelectRange(gfx::Range(3, 2));
    397   EXPECT_EQ(WideToUTF16(L"c"), textfield_->GetSelectedText());
    398   VERIFY_HANDLE_POSITIONS(false);
    399 
    400   // Drag selection handle 1 to right by 1 char.
    401   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e3"), font_list);
    402   SimulateSelectionHandleDrag(gfx::Point(x, 0), 1);
    403   EXPECT_EQ(WideToUTF16(L"c\x05e1\x05e2"), textfield_->GetSelectedText());
    404   VERIFY_HANDLE_POSITIONS(true);
    405 
    406   // Drag selection handle 2 to left by 1 char.
    407   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"b"), font_list);
    408   SimulateSelectionHandleDrag(gfx::Point(-x, 0), 2);
    409   EXPECT_EQ(WideToUTF16(L"bc\x05e1\x05e2"), textfield_->GetSelectedText());
    410   VERIFY_HANDLE_POSITIONS(false);
    411 
    412   // Select [\x5e1] from right to left.
    413   textfield_->SelectRange(gfx::Range(3, 4));
    414   EXPECT_EQ(WideToUTF16(L"\x05e1"), textfield_->GetSelectedText());
    415   VERIFY_HANDLE_POSITIONS(false);
    416 
    417   /* TODO(xji): for bidi text "abcDEF" whose display is "abcFEDhij", when click
    418      right of 'D' and select [D] then move the left selection handle to left
    419      by one character, it should select [ED], instead it selects [F].
    420      Reason: click right of 'D' and left of 'h' return the same x-axis position,
    421      pass this position to FindCursorPosition() returns index of 'h'. which
    422      means the selection start changed from 3 to 6.
    423      Need further investigation on whether this is a bug in Pango and how to
    424      work around it.
    425   // Drag selection handle 2 to left by 1 char.
    426   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e2"), font_list);
    427   SimulateSelectionHandleDrag(gfx::Point(-x, 0), 2);
    428   EXPECT_EQ(WideToUTF16(L"\x05e1\x05e2"), textfield_->GetSelectedText());
    429   VERIFY_HANDLE_POSITIONS(false);
    430   */
    431 
    432   // Drag selection handle 1 to right by 1 char.
    433   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"d"), font_list);
    434   SimulateSelectionHandleDrag(gfx::Point(x, 0), 1);
    435   EXPECT_EQ(WideToUTF16(L"\x05e2\x05e3" L"d"), textfield_->GetSelectedText());
    436   VERIFY_HANDLE_POSITIONS(true);
    437 
    438   // Select [\x5e1] from left to right.
    439   textfield_->SelectRange(gfx::Range(4, 3));
    440   EXPECT_EQ(WideToUTF16(L"\x05e1"), textfield_->GetSelectedText());
    441   VERIFY_HANDLE_POSITIONS(false);
    442 
    443   /* TODO(xji): see detail of above commented out test case.
    444   // Drag selection handle 1 to left by 1 char.
    445   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e2"), font_list);
    446   SimulateSelectionHandleDrag(gfx::Point(-x, 0), 1);
    447   EXPECT_EQ(WideToUTF16(L"\x05e1\x05e2"), textfield_->GetSelectedText());
    448   VERIFY_HANDLE_POSITIONS(true);
    449   */
    450 
    451   // Drag selection handle 2 to right by 1 char.
    452   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"d"), font_list);
    453   SimulateSelectionHandleDrag(gfx::Point(x, 0), 2);
    454   EXPECT_EQ(WideToUTF16(L"\x05e2\x05e3" L"d"), textfield_->GetSelectedText());
    455   VERIFY_HANDLE_POSITIONS(false);
    456 
    457   // Select [\x05r3] from right to left.
    458   textfield_->SelectRange(gfx::Range(5, 6));
    459   EXPECT_EQ(WideToUTF16(L"\x05e3"), textfield_->GetSelectedText());
    460   VERIFY_HANDLE_POSITIONS(false);
    461 
    462   // Drag selection handle 2 to left by 1 char.
    463   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"c"), font_list);
    464   SimulateSelectionHandleDrag(gfx::Point(-x, 0), 2);
    465   EXPECT_EQ(WideToUTF16(L"c\x05e1\x05e2"), textfield_->GetSelectedText());
    466   VERIFY_HANDLE_POSITIONS(false);
    467 
    468   // Drag selection handle 1 to right by 1 char.
    469   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e2"), font_list);
    470   SimulateSelectionHandleDrag(gfx::Point(x, 0), 1);
    471   EXPECT_EQ(WideToUTF16(L"c\x05e1"), textfield_->GetSelectedText());
    472   VERIFY_HANDLE_POSITIONS(true);
    473 
    474   // Select [\x05r3] from left to right.
    475   textfield_->SelectRange(gfx::Range(6, 5));
    476   EXPECT_EQ(WideToUTF16(L"\x05e3"), textfield_->GetSelectedText());
    477   VERIFY_HANDLE_POSITIONS(false);
    478 
    479   // Drag selection handle 1 to left by 1 char.
    480   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"c"), font_list);
    481   SimulateSelectionHandleDrag(gfx::Point(-x, 0), 1);
    482   EXPECT_EQ(WideToUTF16(L"c\x05e1\x05e2"), textfield_->GetSelectedText());
    483   VERIFY_HANDLE_POSITIONS(true);
    484 
    485   // Drag selection handle 2 to right by 1 char.
    486   x = gfx::Canvas::GetStringWidth(WideToUTF16(L"\x05e2"), font_list);
    487   SimulateSelectionHandleDrag(gfx::Point(x, 0), 2);
    488   EXPECT_EQ(WideToUTF16(L"c\x05e1"), textfield_->GetSelectedText());
    489   VERIFY_HANDLE_POSITIONS(false);
    490 }
    491 
    492 TEST_F(TouchSelectionControllerImplTest,
    493        HiddenSelectionHandleRetainsCursorPosition) {
    494   // Create a textfield with lots of text in it.
    495   CreateTextfield();
    496   std::string textfield_text("some text");
    497   for (int i = 0; i < 10; ++i)
    498     textfield_text += textfield_text;
    499   textfield_->SetText(ASCIIToUTF16(textfield_text));
    500 
    501   // Tap the textfield to invoke selection.
    502   ui::GestureEvent tap(ui::ET_GESTURE_TAP, 0, 0, 0, base::TimeDelta(),
    503       ui::GestureEventDetails(ui::ET_GESTURE_TAP, 1.0f, 0.0f), 0);
    504   textfield_->OnGestureEvent(&tap);
    505 
    506   // Select some text such that one handle is hidden.
    507   textfield_->SelectRange(gfx::Range(10, textfield_text.length()));
    508 
    509   // Check that one selection handle is hidden.
    510   EXPECT_FALSE(IsSelectionHandle1Visible());
    511   EXPECT_TRUE(IsSelectionHandle2Visible());
    512   EXPECT_EQ(gfx::Range(10, textfield_text.length()),
    513             textfield_->GetSelectedRange());
    514 
    515   // Drag the visible handle around and make sure the selection end point of the
    516   // invisible handle does not change.
    517   size_t visible_handle_position = textfield_->GetSelectedRange().end();
    518   for (int i = 0; i < 10; ++i) {
    519     SimulateSelectionHandleDrag(gfx::Point(-10, 0), 2);
    520     // Make sure that the visible handle is being dragged.
    521     EXPECT_NE(visible_handle_position, textfield_->GetSelectedRange().end());
    522     visible_handle_position = textfield_->GetSelectedRange().end();
    523     EXPECT_EQ((size_t) 10, textfield_->GetSelectedRange().start());
    524   }
    525 }
    526 
    527 TEST_F(TouchSelectionControllerImplTest,
    528        DoubleTapInTextfieldWithCursorHandleShouldSelectText) {
    529   CreateTextfield();
    530   textfield_->SetText(ASCIIToUTF16("some text"));
    531   aura::test::EventGenerator generator(
    532       textfield_->GetWidget()->GetNativeView()->GetRootWindow());
    533 
    534   // Tap the textfield to invoke touch selection.
    535   generator.GestureTapAt(gfx::Point(10, 10));
    536 
    537   // Cursor handle should be visible.
    538   EXPECT_FALSE(textfield_->HasSelection());
    539   VERIFY_HANDLE_POSITIONS(false);
    540 
    541   // Double tap on the cursor handle position. We want to check that the cursor
    542   // handle is not eating the event and that the event is falling through to the
    543   // textfield.
    544   gfx::Point cursor_pos = GetCursorHandlePosition();
    545   cursor_pos.Offset(GetHandleImageSize().width() / 2 + kPadding, 0);
    546   generator.GestureTapAt(cursor_pos);
    547   generator.GestureTapAt(cursor_pos);
    548   EXPECT_TRUE(textfield_->HasSelection());
    549 }
    550 
    551 // A simple implementation of TouchEditable that allows faking cursor position
    552 // inside its boundaries.
    553 class TestTouchEditable : public ui::TouchEditable {
    554  public:
    555   explicit TestTouchEditable(aura::Window* window)
    556       : window_(window) {
    557     DCHECK(window);
    558   }
    559 
    560   void set_bounds(const gfx::Rect& bounds) {
    561     bounds_ = bounds;
    562   }
    563 
    564   void set_cursor_rect(const gfx::Rect& cursor_rect) {
    565     cursor_rect_ = cursor_rect;
    566   }
    567 
    568   virtual ~TestTouchEditable() {}
    569 
    570  private:
    571   // Overridden from ui::TouchEditable.
    572   virtual void SelectRect(
    573       const gfx::Point& start, const gfx::Point& end) OVERRIDE {
    574     NOTREACHED();
    575   }
    576   virtual void MoveCaretTo(const gfx::Point& point) OVERRIDE {
    577     NOTREACHED();
    578   }
    579   virtual void GetSelectionEndPoints(gfx::Rect* p1, gfx::Rect* p2) OVERRIDE {
    580     *p1 = *p2 = cursor_rect_;
    581   }
    582   virtual gfx::Rect GetBounds() OVERRIDE {
    583     return gfx::Rect(bounds_.size());
    584   }
    585   virtual gfx::NativeView GetNativeView() const OVERRIDE {
    586     return window_;
    587   }
    588   virtual void ConvertPointToScreen(gfx::Point* point) OVERRIDE {
    589     aura::client::ScreenPositionClient* screen_position_client =
    590         aura::client::GetScreenPositionClient(window_->GetRootWindow());
    591     if (screen_position_client)
    592       screen_position_client->ConvertPointToScreen(window_, point);
    593   }
    594   virtual void ConvertPointFromScreen(gfx::Point* point) OVERRIDE {
    595     aura::client::ScreenPositionClient* screen_position_client =
    596         aura::client::GetScreenPositionClient(window_->GetRootWindow());
    597     if (screen_position_client)
    598       screen_position_client->ConvertPointFromScreen(window_, point);
    599   }
    600   virtual bool DrawsHandles() OVERRIDE {
    601     return false;
    602   }
    603   virtual void OpenContextMenu(const gfx::Point& anchor) OVERRIDE {
    604     NOTREACHED();
    605   }
    606   virtual void DestroyTouchSelection() OVERRIDE {
    607     NOTREACHED();
    608   }
    609 
    610   // Overridden from ui::SimpleMenuModel::Delegate.
    611   virtual bool IsCommandIdChecked(int command_id) const OVERRIDE {
    612     NOTREACHED();
    613     return false;
    614   }
    615   virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE {
    616     NOTREACHED();
    617     return false;
    618   }
    619   virtual bool GetAcceleratorForCommandId(
    620       int command_id,
    621       ui::Accelerator* accelerator) OVERRIDE {
    622     NOTREACHED();
    623     return false;
    624   }
    625   virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE {
    626     NOTREACHED();
    627   }
    628 
    629   aura::Window* window_;
    630 
    631   // Boundaries of the client view.
    632   gfx::Rect bounds_;
    633 
    634   // Cursor position inside the client view.
    635   gfx::Rect cursor_rect_;
    636 
    637   DISALLOW_COPY_AND_ASSIGN(TestTouchEditable);
    638 };
    639 
    640 // Tests if the touch editing handle is shown or hidden properly according to
    641 // the cursor position relative to the client boundaries.
    642 TEST_F(TouchSelectionControllerImplTest,
    643        VisibilityOfHandleRegardingClientBounds) {
    644   CreateWidget();
    645 
    646   TestTouchEditable touch_editable(widget_->GetNativeView());
    647   scoped_ptr<ui::TouchSelectionController> touch_selection_controller(
    648       ui::TouchSelectionController::create(&touch_editable));
    649 
    650   touch_editable.set_bounds(gfx::Rect(0, 0, 100, 20));
    651 
    652   // Put the cursor completely inside the client bounds. Handle should be
    653   // visible.
    654   touch_editable.set_cursor_rect(gfx::Rect(2, 0, 1, 20));
    655   touch_selection_controller->SelectionChanged();
    656   EXPECT_TRUE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
    657 
    658   // Move the cursor up such that |kBarMinHeight| pixels are still in the client
    659   // bounds. Handle should still be visible.
    660   touch_editable.set_cursor_rect(gfx::Rect(2, kBarMinHeight - 20, 1, 20));
    661   touch_selection_controller->SelectionChanged();
    662   EXPECT_TRUE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
    663 
    664   // Move the cursor up such that less than |kBarMinHeight| pixels are in the
    665   // client bounds. Handle should be hidden.
    666   touch_editable.set_cursor_rect(gfx::Rect(2, kBarMinHeight - 20 - 1, 1, 20));
    667   touch_selection_controller->SelectionChanged();
    668   EXPECT_FALSE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
    669 
    670   // Move the Cursor down such that |kBarBottomAllowance| pixels are out of the
    671   // client bounds. Handle should be visible.
    672   touch_editable.set_cursor_rect(gfx::Rect(2, kBarBottomAllowance, 1, 20));
    673   touch_selection_controller->SelectionChanged();
    674   EXPECT_TRUE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
    675 
    676   // Move the cursor down such that more than |kBarBottomAllowance| pixels are
    677   // out of the client bounds. Handle should be hidden.
    678   touch_editable.set_cursor_rect(gfx::Rect(2, kBarBottomAllowance + 1, 1, 20));
    679   touch_selection_controller->SelectionChanged();
    680   EXPECT_FALSE(IsCursorHandleVisibleFor(touch_selection_controller.get()));
    681 
    682   touch_selection_controller.reset();
    683 }
    684 
    685 TEST_F(TouchSelectionControllerImplTest, HandlesStackAboveParent) {
    686   ui::EventTarget* root = GetContext();
    687   ui::EventTargeter* targeter = root->GetEventTargeter();
    688 
    689   // Create the first window containing a Views::Textfield.
    690   CreateTextfield();
    691   aura::Window* window1 = textfield_widget_->GetNativeView();
    692 
    693   // Start touch editing, check that the handle is above the first window, and
    694   // end touch editing.
    695   StartTouchEditing();
    696   gfx::Point test_point = GetCursorHandleDragPoint();
    697   ui::MouseEvent test_event1(ui::ET_MOUSE_MOVED, test_point, test_point,
    698                              ui::EF_NONE, ui::EF_NONE);
    699   EXPECT_EQ(GetCursorHandleNativeView(),
    700             targeter->FindTargetForEvent(root, &test_event1));
    701   EndTouchEditing();
    702 
    703   // Create the second (empty) window over the first one.
    704   CreateWidget();
    705   aura::Window* window2 = widget_->GetNativeView();
    706 
    707   // Start touch editing (in the first window) and check that the handle is not
    708   // above the second window.
    709   StartTouchEditing();
    710   ui::MouseEvent test_event2(ui::ET_MOUSE_MOVED, test_point, test_point,
    711                              ui::EF_NONE, ui::EF_NONE);
    712   EXPECT_EQ(window2, targeter->FindTargetForEvent(root, &test_event2));
    713 
    714   // Move the first window to top and check that the handle is kept above the
    715   // first window.
    716   window1->GetRootWindow()->StackChildAtTop(window1);
    717   ui::MouseEvent test_event3(ui::ET_MOUSE_MOVED, test_point, test_point,
    718                              ui::EF_NONE, ui::EF_NONE);
    719   EXPECT_EQ(GetCursorHandleNativeView(),
    720             targeter->FindTargetForEvent(root, &test_event3));
    721 }
    722 
    723 // A simple implementation of TouchEditingMenuController that enables all
    724 // available commands.
    725 class TestTouchEditingMenuController : public TouchEditingMenuController {
    726  public:
    727   TestTouchEditingMenuController() {}
    728   virtual ~TestTouchEditingMenuController() {}
    729 
    730   // Overriden from TouchEditingMenuController.
    731   virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE {
    732     // Return true, since we want the menu to have all |kMenuCommandCount|
    733     // available commands.
    734     return true;
    735   }
    736   virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE {
    737     NOTREACHED();
    738   }
    739   virtual void OpenContextMenu() OVERRIDE {
    740     NOTREACHED();
    741   }
    742   virtual void OnMenuClosed(TouchEditingMenuView* menu) OVERRIDE {}
    743 
    744  private:
    745   DISALLOW_COPY_AND_ASSIGN(TestTouchEditingMenuController);
    746 };
    747 
    748 // Tests if anchor rect for touch editing quick menu is adjusted correctly based
    749 // on the distance of handles.
    750 TEST_F(TouchSelectionControllerImplTest, QuickMenuAdjustsAnchorRect) {
    751   CreateWidget();
    752   aura::Window* window = widget_->GetNativeView();
    753 
    754   scoped_ptr<TestTouchEditingMenuController> quick_menu_controller(
    755       new TestTouchEditingMenuController());
    756 
    757   // Some arbitrary size for touch editing handle image.
    758   gfx::Size handle_image_size(10, 10);
    759 
    760   // Calculate the width of quick menu. In addition to |kMenuCommandCount|
    761   // commands, there is an item for ellipsis.
    762   int quick_menu_width = (kMenuCommandCount + 1) * kMenuButtonWidth +
    763                          kMenuCommandCount;
    764 
    765   // Set anchor rect's width a bit smaller than the quick menu width plus handle
    766   // image width and check that anchor rect's height is adjusted.
    767   gfx::Rect anchor_rect(
    768       0, 0, quick_menu_width + handle_image_size.width() - 10, 20);
    769   TouchEditingMenuView* quick_menu(TouchEditingMenuView::Create(
    770       quick_menu_controller.get(), anchor_rect, handle_image_size, window));
    771   anchor_rect.Inset(0, 0, 0, -handle_image_size.height());
    772   EXPECT_EQ(anchor_rect.ToString(), quick_menu->GetAnchorRect().ToString());
    773 
    774   // Set anchor rect's width a bit greater than the quick menu width plus handle
    775   // image width and check that anchor rect's height is not adjusted.
    776   anchor_rect =
    777       gfx::Rect(0, 0, quick_menu_width + handle_image_size.width() + 10, 20);
    778   quick_menu = TouchEditingMenuView::Create(
    779       quick_menu_controller.get(), anchor_rect, handle_image_size, window);
    780   EXPECT_EQ(anchor_rect.ToString(), quick_menu->GetAnchorRect().ToString());
    781 
    782   // Close the widget, hence quick menus, before quick menu controller goes out
    783   // of scope.
    784   widget_->CloseNow();
    785   widget_ = NULL;
    786 }
    787 
    788 TEST_F(TouchSelectionControllerImplTest, MouseEventDeactivatesTouchSelection) {
    789   CreateTextfield();
    790   EXPECT_FALSE(GetSelectionController());
    791 
    792   aura::test::EventGenerator generator(
    793       textfield_widget_->GetNativeView()->GetRootWindow());
    794 
    795   generator.set_current_location(gfx::Point(5, 5));
    796   RunPendingMessages();
    797 
    798   // Start touch editing; then move mouse over the textfield and ensure it
    799   // deactivates touch selection.
    800   StartTouchEditing();
    801   EXPECT_TRUE(GetSelectionController());
    802   generator.MoveMouseTo(gfx::Point(5, 10));
    803   RunPendingMessages();
    804   EXPECT_FALSE(GetSelectionController());
    805 
    806   generator.MoveMouseTo(gfx::Point(5, 50));
    807   RunPendingMessages();
    808 
    809   // Start touch editing; then move mouse out of the textfield, but inside the
    810   // winow and ensure it deactivates touch selection.
    811   StartTouchEditing();
    812   EXPECT_TRUE(GetSelectionController());
    813   generator.MoveMouseTo(gfx::Point(5, 55));
    814   RunPendingMessages();
    815   EXPECT_FALSE(GetSelectionController());
    816 
    817   generator.MoveMouseTo(gfx::Point(5, 500));
    818   RunPendingMessages();
    819 
    820   // Start touch editing; then move mouse out of the textfield and window and
    821   // ensure it deactivates touch selection.
    822   StartTouchEditing();
    823   EXPECT_TRUE(GetSelectionController());
    824   generator.MoveMouseTo(5, 505);
    825   RunPendingMessages();
    826   EXPECT_FALSE(GetSelectionController());
    827 }
    828 
    829 TEST_F(TouchSelectionControllerImplTest, KeyEventDeactivatesTouchSelection) {
    830   CreateTextfield();
    831   EXPECT_FALSE(GetSelectionController());
    832 
    833   aura::test::EventGenerator generator(
    834       textfield_widget_->GetNativeView()->GetRootWindow());
    835 
    836   RunPendingMessages();
    837 
    838   // Start touch editing; then press a key and ensure it deactivates touch
    839   // selection.
    840   StartTouchEditing();
    841   EXPECT_TRUE(GetSelectionController());
    842   generator.PressKey(ui::VKEY_A, 0);
    843   RunPendingMessages();
    844   EXPECT_FALSE(GetSelectionController());
    845 }
    846 
    847 }  // namespace views
    848