// Copyright (c) 2010 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 <map>

#include "app/clipboard/clipboard.h"
#include "base/keyboard_codes.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "gfx/canvas_skia.h"
#include "gfx/path.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "views/background.h"
#include "views/controls/button/checkbox.h"
#if defined(OS_WIN)
#include "views/controls/button/native_button_win.h"
#endif
#include "views/controls/native/native_view_host.h"
#include "views/controls/scroll_view.h"
#include "views/controls/textfield/textfield.h"
#include "views/event.h"
#include "views/focus/accelerator_handler.h"
#include "views/focus/view_storage.h"
#include "views/view.h"
#include "views/views_delegate.h"
#include "views/widget/root_view.h"
#if defined(OS_WIN)
#include "views/widget/widget_win.h"
#elif defined(OS_LINUX)
#include "views/widget/widget_gtk.h"
#include "views/window/window_gtk.h"
#endif
#include "views/window/dialog_delegate.h"
#include "views/window/window.h"

using namespace views;

namespace {

class ViewTest : public testing::Test {
 public:
  ViewTest() {
#if defined(OS_WIN)
    OleInitialize(NULL);
#endif
  }

  ~ViewTest() {
#if defined(OS_WIN)
    OleUninitialize();
#endif
  }

  virtual void TearDown() {
    // Flush the message loop because we have pending release tasks
    // and these tasks if un-executed would upset Valgrind.
    RunPendingMessages();
  }

  Widget* CreateWidget() {
#if defined(OS_WIN)
    return new WidgetWin();
#elif defined(OS_LINUX)
    return new WidgetGtk(WidgetGtk::TYPE_WINDOW);
#endif
  }

  void RunPendingMessages() {
    message_loop_.RunAllPending();
  }
 private:
  MessageLoopForUI message_loop_;
};

// Paints the RootView.
void PaintRootView(views::RootView* root, bool empty_paint) {
  if (!empty_paint) {
    root->PaintNow();
  } else {
    // User isn't logged in, so that PaintNow will generate an empty rectangle.
    // Invoke paint directly.
    gfx::Rect paint_rect = root->GetScheduledPaintRect();
    gfx::CanvasSkia canvas(paint_rect.width(), paint_rect.height(), true);
    canvas.TranslateInt(-paint_rect.x(), -paint_rect.y());
    canvas.ClipRectInt(0, 0, paint_rect.width(), paint_rect.height());
    root->ProcessPaint(&canvas);
  }
}

/*
typedef CWinTraits<WS_VISIBLE|WS_CLIPCHILDREN|WS_CLIPSIBLINGS> CVTWTraits;

// A trivial window implementation that tracks whether or not it has been
// painted. This is used by the painting test to determine if paint will result
// in an empty region.
class EmptyWindow : public CWindowImpl<EmptyWindow,
                                       CWindow,
                                       CVTWTraits> {
 public:
  DECLARE_FRAME_WND_CLASS(L"Chrome_ChromeViewsEmptyWindow", 0)

  BEGIN_MSG_MAP_EX(EmptyWindow)
    MSG_WM_PAINT(OnPaint)
  END_MSG_MAP()

  EmptyWindow::EmptyWindow(const CRect& bounds) : empty_paint_(false) {
    Create(NULL, static_cast<RECT>(bounds));
    ShowWindow(SW_SHOW);
  }

  EmptyWindow::~EmptyWindow() {
    ShowWindow(SW_HIDE);
    DestroyWindow();
  }

  void EmptyWindow::OnPaint(HDC dc) {
    PAINTSTRUCT ps;
    HDC paint_dc = BeginPaint(&ps);
    if (!empty_paint_ && (ps.rcPaint.top - ps.rcPaint.bottom) == 0 &&
        (ps.rcPaint.right - ps.rcPaint.left) == 0) {
      empty_paint_ = true;
    }
    EndPaint(&ps);
  }

  bool empty_paint() {
    return empty_paint_;
  }

 private:
  bool empty_paint_;

  DISALLOW_COPY_AND_ASSIGN(EmptyWindow);
};
*/

////////////////////////////////////////////////////////////////////////////////
//
// A view subclass for testing purpose
//
////////////////////////////////////////////////////////////////////////////////
class TestView : public View {
 public:
  TestView() : View() {
  }

  virtual ~TestView() {}

  // Reset all test state
  void Reset() {
    did_change_bounds_ = false;
    child_added_ = false;
    child_removed_ = false;
    last_mouse_event_type_ = 0;
    location_.SetPoint(0, 0);
    last_clip_.setEmpty();
    accelerator_count_map_.clear();
  }

  virtual void DidChangeBounds(const gfx::Rect& previous,
                               const gfx::Rect& current);
  virtual void ViewHierarchyChanged(bool is_add, View *parent, View *child);
  virtual bool OnMousePressed(const MouseEvent& event);
  virtual bool OnMouseDragged(const MouseEvent& event);
  virtual void OnMouseReleased(const MouseEvent& event, bool canceled);
  virtual void Paint(gfx::Canvas* canvas);
  virtual bool AcceleratorPressed(const Accelerator& accelerator);

  // DidChangeBounds test
  bool did_change_bounds_;
  gfx::Rect previous_bounds_;
  gfx::Rect new_bounds_;

  // AddRemoveNotifications test
  bool child_added_;
  bool child_removed_;
  View* parent_;
  View* child_;

  // MouseEvent
  int last_mouse_event_type_;
  gfx::Point location_;

  // Painting
  SkRect last_clip_;

  // Accelerators
  std::map<Accelerator, int> accelerator_count_map_;
};

////////////////////////////////////////////////////////////////////////////////
// DidChangeBounds
////////////////////////////////////////////////////////////////////////////////

void TestView::DidChangeBounds(const gfx::Rect& previous,
                               const gfx::Rect& current) {
  did_change_bounds_ = true;
  previous_bounds_ = previous;
  new_bounds_ = current;
}

TEST_F(ViewTest, DidChangeBounds) {
  TestView* v = new TestView();

  gfx::Rect prev_rect(0, 0, 200, 200);
  gfx::Rect new_rect(100, 100, 250, 250);

  v->SetBounds(prev_rect);
  v->Reset();

  v->SetBounds(new_rect);
  EXPECT_EQ(v->did_change_bounds_, true);
  EXPECT_EQ(v->previous_bounds_, prev_rect);
  EXPECT_EQ(v->new_bounds_, new_rect);

  EXPECT_EQ(v->bounds(), gfx::Rect(new_rect));
  delete v;
}

////////////////////////////////////////////////////////////////////////////////
// AddRemoveNotifications
////////////////////////////////////////////////////////////////////////////////

void TestView::ViewHierarchyChanged(bool is_add, View *parent, View *child) {
  if (is_add) {
    child_added_ = true;
  } else {
    child_removed_ = true;
  }
  parent_ = parent;
  child_ = child;
}

}  // namespace

TEST_F(ViewTest, AddRemoveNotifications) {
  TestView* v1 = new TestView();
  v1->SetBounds(0, 0, 300, 300);

  TestView* v2 = new TestView();
  v2->SetBounds(0, 0, 300, 300);

  TestView* v3 = new TestView();
  v3->SetBounds(0, 0, 300, 300);

  // Add a child. Make sure both v2 and v3 receive the right
  // notification
  v2->Reset();
  v3->Reset();
  v2->AddChildView(v3);
  EXPECT_EQ(v2->child_added_, true);
  EXPECT_EQ(v2->parent_, v2);
  EXPECT_EQ(v2->child_, v3);

  EXPECT_EQ(v3->child_added_, true);
  EXPECT_EQ(v3->parent_, v2);
  EXPECT_EQ(v3->child_, v3);

  // Add v2 and transitively v3 to v1. Make sure that all views
  // received the right notification

  v1->Reset();
  v2->Reset();
  v3->Reset();
  v1->AddChildView(v2);

  EXPECT_EQ(v1->child_added_, true);
  EXPECT_EQ(v1->child_, v2);
  EXPECT_EQ(v1->parent_, v1);

  EXPECT_EQ(v2->child_added_, true);
  EXPECT_EQ(v2->child_, v2);
  EXPECT_EQ(v2->parent_, v1);

  EXPECT_EQ(v3->child_added_, true);
  EXPECT_EQ(v3->child_, v2);
  EXPECT_EQ(v3->parent_, v1);

  // Remove v2. Make sure all views received the right notification
  v1->Reset();
  v2->Reset();
  v3->Reset();
  v1->RemoveChildView(v2);

  EXPECT_EQ(v1->child_removed_, true);
  EXPECT_EQ(v1->parent_, v1);
  EXPECT_EQ(v1->child_, v2);

  EXPECT_EQ(v2->child_removed_, true);
  EXPECT_EQ(v2->parent_, v1);
  EXPECT_EQ(v2->child_, v2);

  EXPECT_EQ(v3->child_removed_, true);
  EXPECT_EQ(v3->parent_, v1);
  EXPECT_EQ(v3->child_, v3);

  // Clean-up
  delete v1;
  delete v2;  // This also deletes v3 (child of v2).
}

////////////////////////////////////////////////////////////////////////////////
// MouseEvent
////////////////////////////////////////////////////////////////////////////////

bool TestView::OnMousePressed(const MouseEvent& event) {
  last_mouse_event_type_ = event.GetType();
  location_.SetPoint(event.x(), event.y());
  return true;
}

bool TestView::OnMouseDragged(const MouseEvent& event) {
  last_mouse_event_type_ = event.GetType();
  location_.SetPoint(event.x(), event.y());
  return true;
}

void TestView::OnMouseReleased(const MouseEvent& event, bool canceled) {
  last_mouse_event_type_ = event.GetType();
  location_.SetPoint(event.x(), event.y());
}

TEST_F(ViewTest, MouseEvent) {
  TestView* v1 = new TestView();
  v1->SetBounds(0, 0, 300, 300);

  TestView* v2 = new TestView();
  v2->SetBounds(100, 100, 100, 100);

  scoped_ptr<Widget> window(CreateWidget());
#if defined(OS_WIN)
  WidgetWin* window_win = static_cast<WidgetWin*>(window.get());
  window_win->set_delete_on_destroy(false);
  window_win->set_window_style(WS_OVERLAPPEDWINDOW);
  window_win->Init(NULL, gfx::Rect(50, 50, 650, 650));
#endif
  RootView* root = window->GetRootView();

  root->AddChildView(v1);
  v1->AddChildView(v2);

  v1->Reset();
  v2->Reset();

  MouseEvent pressed(Event::ET_MOUSE_PRESSED,
                     110,
                     120,
                     Event::EF_LEFT_BUTTON_DOWN);
  root->OnMousePressed(pressed);
  EXPECT_EQ(v2->last_mouse_event_type_, Event::ET_MOUSE_PRESSED);
  EXPECT_EQ(v2->location_.x(), 10);
  EXPECT_EQ(v2->location_.y(), 20);
  // Make sure v1 did not receive the event
  EXPECT_EQ(v1->last_mouse_event_type_, 0);

  // Drag event out of bounds. Should still go to v2
  v1->Reset();
  v2->Reset();
  MouseEvent dragged(Event::ET_MOUSE_DRAGGED,
                     50,
                     40,
                     Event::EF_LEFT_BUTTON_DOWN);
  root->OnMouseDragged(dragged);
  EXPECT_EQ(v2->last_mouse_event_type_, Event::ET_MOUSE_DRAGGED);
  EXPECT_EQ(v2->location_.x(), -50);
  EXPECT_EQ(v2->location_.y(), -60);
  // Make sure v1 did not receive the event
  EXPECT_EQ(v1->last_mouse_event_type_, 0);

  // Releasted event out of bounds. Should still go to v2
  v1->Reset();
  v2->Reset();
  MouseEvent released(Event::ET_MOUSE_RELEASED, 0, 0, 0);
  root->OnMouseDragged(released);
  EXPECT_EQ(v2->last_mouse_event_type_, Event::ET_MOUSE_RELEASED);
  EXPECT_EQ(v2->location_.x(), -100);
  EXPECT_EQ(v2->location_.y(), -100);
  // Make sure v1 did not receive the event
  EXPECT_EQ(v1->last_mouse_event_type_, 0);

  window->CloseNow();
}

////////////////////////////////////////////////////////////////////////////////
// Painting
////////////////////////////////////////////////////////////////////////////////

void TestView::Paint(gfx::Canvas* canvas) {
  canvas->AsCanvasSkia()->getClipBounds(&last_clip_);
}

void CheckRect(const SkRect& check_rect, const SkRect& target_rect) {
  EXPECT_EQ(target_rect.fLeft, check_rect.fLeft);
  EXPECT_EQ(target_rect.fRight, check_rect.fRight);
  EXPECT_EQ(target_rect.fTop, check_rect.fTop);
  EXPECT_EQ(target_rect.fBottom, check_rect.fBottom);
}

/* This test is disabled because it is flakey on some systems.
TEST_F(ViewTest, DISABLED_Painting) {
  // Determine if InvalidateRect generates an empty paint rectangle.
  EmptyWindow paint_window(CRect(50, 50, 650, 650));
  paint_window.RedrawWindow(CRect(0, 0, 600, 600), NULL,
                            RDW_UPDATENOW | RDW_INVALIDATE | RDW_ALLCHILDREN);
  bool empty_paint = paint_window.empty_paint();

  views::WidgetWin window;
  window.set_delete_on_destroy(false);
  window.set_window_style(WS_OVERLAPPEDWINDOW);
  window.Init(NULL, gfx::Rect(50, 50, 650, 650), NULL);
  RootView* root = window.GetRootView();

  TestView* v1 = new TestView();
  v1->SetBounds(0, 0, 650, 650);
  root->AddChildView(v1);

  TestView* v2 = new TestView();
  v2->SetBounds(10, 10, 80, 80);
  v1->AddChildView(v2);

  TestView* v3 = new TestView();
  v3->SetBounds(10, 10, 60, 60);
  v2->AddChildView(v3);

  TestView* v4 = new TestView();
  v4->SetBounds(10, 200, 100, 100);
  v1->AddChildView(v4);

  // Make sure to paint current rects
  PaintRootView(root, empty_paint);


  v1->Reset();
  v2->Reset();
  v3->Reset();
  v4->Reset();
  v3->SchedulePaint(gfx::Rect(10, 10, 10, 10), false);
  PaintRootView(root, empty_paint);

  SkRect tmp_rect;

  tmp_rect.set(SkIntToScalar(10),
               SkIntToScalar(10),
               SkIntToScalar(20),
               SkIntToScalar(20));
  CheckRect(v3->last_clip_, tmp_rect);

  tmp_rect.set(SkIntToScalar(20),
               SkIntToScalar(20),
               SkIntToScalar(30),
               SkIntToScalar(30));
  CheckRect(v2->last_clip_, tmp_rect);

  tmp_rect.set(SkIntToScalar(30),
               SkIntToScalar(30),
               SkIntToScalar(40),
               SkIntToScalar(40));
  CheckRect(v1->last_clip_, tmp_rect);

  // Make sure v4 was not painted
  tmp_rect.setEmpty();
  CheckRect(v4->last_clip_, tmp_rect);

  window.DestroyWindow();
}
*/

TEST_F(ViewTest, RemoveNotification) {
  views::ViewStorage* vs = views::ViewStorage::GetSharedInstance();
  views::Widget* window = CreateWidget();
  views::RootView* root_view = window->GetRootView();

  View* v1 = new View;
  int s1 = vs->CreateStorageID();
  vs->StoreView(s1, v1);
  root_view->AddChildView(v1);
  View* v11 = new View;
  int s11 = vs->CreateStorageID();
  vs->StoreView(s11, v11);
  v1->AddChildView(v11);
  View* v111 = new View;
  int s111 = vs->CreateStorageID();
  vs->StoreView(s111, v111);
  v11->AddChildView(v111);
  View* v112 = new View;
  int s112 = vs->CreateStorageID();
  vs->StoreView(s112, v112);
  v11->AddChildView(v112);
  View* v113 = new View;
  int s113 = vs->CreateStorageID();
  vs->StoreView(s113, v113);
  v11->AddChildView(v113);
  View* v1131 = new View;
  int s1131 = vs->CreateStorageID();
  vs->StoreView(s1131, v1131);
  v113->AddChildView(v1131);
  View* v12 = new View;
  int s12 = vs->CreateStorageID();
  vs->StoreView(s12, v12);
  v1->AddChildView(v12);

  View* v2 = new View;
  int s2 = vs->CreateStorageID();
  vs->StoreView(s2, v2);
  root_view->AddChildView(v2);
  View* v21 = new View;
  int s21 = vs->CreateStorageID();
  vs->StoreView(s21, v21);
  v2->AddChildView(v21);
  View* v211 = new View;
  int s211 = vs->CreateStorageID();
  vs->StoreView(s211, v211);
  v21->AddChildView(v211);

  size_t stored_views = vs->view_count();

  // Try removing a leaf view.
  v21->RemoveChildView(v211);
  EXPECT_EQ(stored_views - 1, vs->view_count());
  EXPECT_EQ(NULL, vs->RetrieveView(s211));
  delete v211;  // We won't use this one anymore.

  // Now try removing a view with a hierarchy of depth 1.
  v11->RemoveChildView(v113);
  EXPECT_EQ(stored_views - 3, vs->view_count());
  EXPECT_EQ(NULL, vs->RetrieveView(s113));
  EXPECT_EQ(NULL, vs->RetrieveView(s1131));
  delete v113;  // We won't use this one anymore.

  // Now remove even more.
  root_view->RemoveChildView(v1);
  EXPECT_EQ(stored_views - 8, vs->view_count());
  EXPECT_EQ(NULL, vs->RetrieveView(s1));
  EXPECT_EQ(NULL, vs->RetrieveView(s11));
  EXPECT_EQ(NULL, vs->RetrieveView(s12));
  EXPECT_EQ(NULL, vs->RetrieveView(s111));
  EXPECT_EQ(NULL, vs->RetrieveView(s112));

  // Put v1 back for more tests.
  root_view->AddChildView(v1);
  vs->StoreView(s1, v1);

  // Now delete the root view (deleting the window will trigger a delete of the
  // RootView) and make sure we are notified that the views were removed.
  delete window;
  EXPECT_EQ(stored_views - 10, vs->view_count());
  EXPECT_EQ(NULL, vs->RetrieveView(s1));
  EXPECT_EQ(NULL, vs->RetrieveView(s12));
  EXPECT_EQ(NULL, vs->RetrieveView(s11));
  EXPECT_EQ(NULL, vs->RetrieveView(s12));
  EXPECT_EQ(NULL, vs->RetrieveView(s21));
  EXPECT_EQ(NULL, vs->RetrieveView(s111));
  EXPECT_EQ(NULL, vs->RetrieveView(s112));
}

namespace {
class HitTestView : public views::View {
 public:
  explicit HitTestView(bool has_hittest_mask)
      : has_hittest_mask_(has_hittest_mask) {
  }
  virtual ~HitTestView() {}

 protected:
  // Overridden from views::View:
  virtual bool HasHitTestMask() const {
    return has_hittest_mask_;
  }
  virtual void GetHitTestMask(gfx::Path* mask) const {
    DCHECK(has_hittest_mask_);
    DCHECK(mask);

    SkScalar w = SkIntToScalar(width());
    SkScalar h = SkIntToScalar(height());

    // Create a triangular mask within the bounds of this View.
    mask->moveTo(w / 2, 0);
    mask->lineTo(w, h);
    mask->lineTo(0, h);
    mask->close();
  }

 private:
  bool has_hittest_mask_;

  DISALLOW_COPY_AND_ASSIGN(HitTestView);
};

gfx::Point ConvertPointToView(views::View* view, const gfx::Point& p) {
  gfx::Point tmp(p);
  views::View::ConvertPointToView(view->GetRootView(), view, &tmp);
  return tmp;
}
}

TEST_F(ViewTest, HitTestMasks) {
  scoped_ptr<views::Widget> window(CreateWidget());
  views::RootView* root_view = window->GetRootView();
  root_view->SetBounds(0, 0, 500, 500);

  gfx::Rect v1_bounds = gfx::Rect(0, 0, 100, 100);
  HitTestView* v1 = new HitTestView(false);
  v1->SetBounds(v1_bounds);
  root_view->AddChildView(v1);

  gfx::Rect v2_bounds = gfx::Rect(105, 0, 100, 100);
  HitTestView* v2 = new HitTestView(true);
  v2->SetBounds(v2_bounds);
  root_view->AddChildView(v2);

  gfx::Point v1_centerpoint = v1_bounds.CenterPoint();
  gfx::Point v2_centerpoint = v2_bounds.CenterPoint();
  gfx::Point v1_origin = v1_bounds.origin();
  gfx::Point v2_origin = v2_bounds.origin();

  // Test HitTest
  EXPECT_EQ(true, v1->HitTest(ConvertPointToView(v1, v1_centerpoint)));
  EXPECT_EQ(true, v2->HitTest(ConvertPointToView(v2, v2_centerpoint)));

  EXPECT_EQ(true, v1->HitTest(ConvertPointToView(v1, v1_origin)));
  EXPECT_EQ(false, v2->HitTest(ConvertPointToView(v2, v2_origin)));

  // Test GetViewForPoint
  EXPECT_EQ(v1, root_view->GetViewForPoint(v1_centerpoint));
  EXPECT_EQ(v2, root_view->GetViewForPoint(v2_centerpoint));
  EXPECT_EQ(v1, root_view->GetViewForPoint(v1_origin));
  EXPECT_EQ(root_view, root_view->GetViewForPoint(v2_origin));
}

TEST_F(ViewTest, Textfield) {
  const string16 kText = ASCIIToUTF16("Reality is that which, when you stop "
                                      "believing it, doesn't go away.");
  const string16 kExtraText = ASCIIToUTF16("Pretty deep, Philip!");
  const string16 kEmptyString;

  Clipboard clipboard;

  Widget* window = CreateWidget();
  window->Init(NULL, gfx::Rect(0, 0, 100, 100));
  RootView* root_view = window->GetRootView();

  Textfield* textfield = new Textfield();
  root_view->AddChildView(textfield);

  // Test setting, appending text.
  textfield->SetText(kText);
  EXPECT_EQ(kText, textfield->text());
  textfield->AppendText(kExtraText);
  EXPECT_EQ(kText + kExtraText, textfield->text());
  textfield->SetText(string16());
  EXPECT_EQ(kEmptyString, textfield->text());

  // Test selection related methods.
  textfield->SetText(kText);
  EXPECT_EQ(kEmptyString, textfield->GetSelectedText());
  textfield->SelectAll();
  EXPECT_EQ(kText, textfield->text());
  textfield->ClearSelection();
  EXPECT_EQ(kEmptyString, textfield->GetSelectedText());
}

#if defined(OS_WIN)
class TestViewsDelegate : public views::ViewsDelegate {
 public:
  TestViewsDelegate() {}
  virtual ~TestViewsDelegate() {}

  // Overridden from views::ViewsDelegate:
  virtual Clipboard* GetClipboard() const {
    if (!clipboard_.get()) {
      // Note that we need a MessageLoop for the next call to work.
      clipboard_.reset(new Clipboard);
    }
    return clipboard_.get();
  }
  virtual void SaveWindowPlacement(const std::wstring& window_name,
                                   const gfx::Rect& bounds,
                                   bool maximized) {
  }
  virtual bool GetSavedWindowBounds(const std::wstring& window_name,
                                    gfx::Rect* bounds) const {
    return false;
  }
  virtual bool GetSavedMaximizedState(const std::wstring& window_name,
                                      bool* maximized) const {
    return false;
  }
  virtual void NotifyAccessibilityEvent(
      views::View* view, AccessibilityTypes::Event event_type) {}
  virtual HICON GetDefaultWindowIcon() const {
    return NULL;
  }
  virtual void AddRef() {}
  virtual void ReleaseRef() {}

 private:
  mutable scoped_ptr<Clipboard> clipboard_;

  DISALLOW_COPY_AND_ASSIGN(TestViewsDelegate);
};

// Tests that the Textfield view respond appropiately to cut/copy/paste.
TEST_F(ViewTest, TextfieldCutCopyPaste) {
  views::ViewsDelegate::views_delegate = new TestViewsDelegate;

  const std::wstring kNormalText = L"Normal";
  const std::wstring kReadOnlyText = L"Read only";
  const std::wstring kPasswordText = L"Password! ** Secret stuff **";

  Clipboard clipboard;

  Widget* window = CreateWidget();
#if defined(OS_WIN)
  static_cast<WidgetWin*>(window)->Init(NULL, gfx::Rect(0, 0, 100, 100));
#endif
  RootView* root_view = window->GetRootView();

  Textfield* normal = new Textfield();
  Textfield* read_only = new Textfield();
  read_only->SetReadOnly(true);
  Textfield* password = new Textfield(Textfield::STYLE_PASSWORD);

  root_view->AddChildView(normal);
  root_view->AddChildView(read_only);
  root_view->AddChildView(password);

  normal->SetText(kNormalText);
  read_only->SetText(kReadOnlyText);
  password->SetText(kPasswordText);

  //
  // Test cut.
  //
  ASSERT_TRUE(normal->GetTestingHandle());
  normal->SelectAll();
  ::SendMessage(normal->GetTestingHandle(), WM_CUT, 0, 0);

  string16 result;
  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &result);
  EXPECT_EQ(kNormalText, result);
  normal->SetText(kNormalText);  // Let's revert to the original content.

  ASSERT_TRUE(read_only->GetTestingHandle());
  read_only->SelectAll();
  ::SendMessage(read_only->GetTestingHandle(), WM_CUT, 0, 0);
  result.clear();
  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &result);
  // Cut should have failed, so the clipboard content should not have changed.
  EXPECT_EQ(kNormalText, result);

  ASSERT_TRUE(password->GetTestingHandle());
  password->SelectAll();
  ::SendMessage(password->GetTestingHandle(), WM_CUT, 0, 0);
  result.clear();
  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &result);
  // Cut should have failed, so the clipboard content should not have changed.
  EXPECT_EQ(kNormalText, result);

  //
  // Test copy.
  //

  // Let's start with read_only as the clipboard already contains the content
  // of normal.
  read_only->SelectAll();
  ::SendMessage(read_only->GetTestingHandle(), WM_COPY, 0, 0);
  result.clear();
  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &result);
  EXPECT_EQ(kReadOnlyText, result);

  normal->SelectAll();
  ::SendMessage(normal->GetTestingHandle(), WM_COPY, 0, 0);
  result.clear();
  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &result);
  EXPECT_EQ(kNormalText, result);

  password->SelectAll();
  ::SendMessage(password->GetTestingHandle(), WM_COPY, 0, 0);
  result.clear();
  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &result);
  // We don't let you copy from a password field, clipboard should not have
  // changed.
  EXPECT_EQ(kNormalText, result);

  //
  // Test Paste.
  //
  // Note that we use GetWindowText instead of Textfield::GetText below as the
  // text in the Textfield class is synced to the text of the HWND on
  // WM_KEYDOWN messages that we are not simulating here.

  // Attempting to copy kNormalText in a read-only text-field should fail.
  read_only->SelectAll();
  ::SendMessage(read_only->GetTestingHandle(), WM_KEYDOWN, 0, 0);
  wchar_t buffer[1024] = { 0 };
  ::GetWindowText(read_only->GetTestingHandle(), buffer, 1024);
  EXPECT_EQ(kReadOnlyText, std::wstring(buffer));

  password->SelectAll();
  ::SendMessage(password->GetTestingHandle(), WM_PASTE, 0, 0);
  ::GetWindowText(password->GetTestingHandle(), buffer, 1024);
  EXPECT_EQ(kNormalText, std::wstring(buffer));

  // Copy from read_only so the string we are pasting is not the same as the
  // current one.
  read_only->SelectAll();
  ::SendMessage(read_only->GetTestingHandle(), WM_COPY, 0, 0);
  normal->SelectAll();
  ::SendMessage(normal->GetTestingHandle(), WM_PASTE, 0, 0);
  ::GetWindowText(normal->GetTestingHandle(), buffer, 1024);
  EXPECT_EQ(kReadOnlyText, std::wstring(buffer));

  delete views::ViewsDelegate::views_delegate;
  views::ViewsDelegate::views_delegate = NULL;
}
#endif

////////////////////////////////////////////////////////////////////////////////
// Accelerators
////////////////////////////////////////////////////////////////////////////////
bool TestView::AcceleratorPressed(const Accelerator& accelerator) {
  accelerator_count_map_[accelerator]++;
  return true;
}

#if defined(OS_WIN)
TEST_F(ViewTest, ActivateAccelerator) {
  // Register a keyboard accelerator before the view is added to a window.
  views::Accelerator return_accelerator(base::VKEY_RETURN, false, false, false);
  TestView* view = new TestView();
  view->Reset();
  view->AddAccelerator(return_accelerator);
  EXPECT_EQ(view->accelerator_count_map_[return_accelerator], 0);

  // Create a window and add the view as its child.
  WidgetWin window;
  window.Init(NULL, gfx::Rect(0, 0, 100, 100));
  window.set_delete_on_destroy(false);
  window.set_window_style(WS_OVERLAPPEDWINDOW);
  RootView* root = window.GetRootView();
  root->AddChildView(view);

  // Get the focus manager.
  views::FocusManager* focus_manager =
      views::FocusManager::GetFocusManagerForNativeView(window.GetNativeView());
  ASSERT_TRUE(focus_manager);

  // Hit the return key and see if it takes effect.
  EXPECT_TRUE(focus_manager->ProcessAccelerator(return_accelerator));
  EXPECT_EQ(view->accelerator_count_map_[return_accelerator], 1);

  // Hit the escape key. Nothing should happen.
  views::Accelerator escape_accelerator(base::VKEY_ESCAPE, false, false, false);
  EXPECT_FALSE(focus_manager->ProcessAccelerator(escape_accelerator));
  EXPECT_EQ(view->accelerator_count_map_[return_accelerator], 1);
  EXPECT_EQ(view->accelerator_count_map_[escape_accelerator], 0);

  // Now register the escape key and hit it again.
  view->AddAccelerator(escape_accelerator);
  EXPECT_TRUE(focus_manager->ProcessAccelerator(escape_accelerator));
  EXPECT_EQ(view->accelerator_count_map_[return_accelerator], 1);
  EXPECT_EQ(view->accelerator_count_map_[escape_accelerator], 1);

  // Remove the return key accelerator.
  view->RemoveAccelerator(return_accelerator);
  EXPECT_FALSE(focus_manager->ProcessAccelerator(return_accelerator));
  EXPECT_EQ(view->accelerator_count_map_[return_accelerator], 1);
  EXPECT_EQ(view->accelerator_count_map_[escape_accelerator], 1);

  // Add it again. Hit the return key and the escape key.
  view->AddAccelerator(return_accelerator);
  EXPECT_TRUE(focus_manager->ProcessAccelerator(return_accelerator));
  EXPECT_EQ(view->accelerator_count_map_[return_accelerator], 2);
  EXPECT_EQ(view->accelerator_count_map_[escape_accelerator], 1);
  EXPECT_TRUE(focus_manager->ProcessAccelerator(escape_accelerator));
  EXPECT_EQ(view->accelerator_count_map_[return_accelerator], 2);
  EXPECT_EQ(view->accelerator_count_map_[escape_accelerator], 2);

  // Remove all the accelerators.
  view->ResetAccelerators();
  EXPECT_FALSE(focus_manager->ProcessAccelerator(return_accelerator));
  EXPECT_EQ(view->accelerator_count_map_[return_accelerator], 2);
  EXPECT_EQ(view->accelerator_count_map_[escape_accelerator], 2);
  EXPECT_FALSE(focus_manager->ProcessAccelerator(escape_accelerator));
  EXPECT_EQ(view->accelerator_count_map_[return_accelerator], 2);
  EXPECT_EQ(view->accelerator_count_map_[escape_accelerator], 2);

  window.CloseNow();
}
#endif

#if defined(OS_WIN)
////////////////////////////////////////////////////////////////////////////////
// Mouse-wheel message rerouting
////////////////////////////////////////////////////////////////////////////////
class ButtonTest : public NativeButton {
 public:
  ButtonTest(ButtonListener* listener, const std::wstring& label)
      : NativeButton(listener, label) {
  }

  HWND GetHWND() {
    return static_cast<NativeButtonWin*>(native_wrapper_)->native_view();
  }
};

class CheckboxTest : public Checkbox {
 public:
  explicit CheckboxTest(const std::wstring& label) : Checkbox(label) {
  }

  HWND GetHWND() {
    return static_cast<NativeCheckboxWin*>(native_wrapper_)->native_view();
  }
};

class ScrollableTestView : public View {
 public:
  ScrollableTestView() { }

  virtual gfx::Size GetPreferredSize() {
    return gfx::Size(100, 10000);
  }

  virtual void Layout() {
    SizeToPreferredSize();
  }
};

class TestViewWithControls : public View {
 public:
  TestViewWithControls() {
    button_ = new ButtonTest(NULL, L"Button");
    checkbox_ = new CheckboxTest(L"My checkbox");
    text_field_ = new Textfield();
    AddChildView(button_);
    AddChildView(checkbox_);
    AddChildView(text_field_);
  }

  ButtonTest* button_;
  CheckboxTest* checkbox_;
  Textfield* text_field_;
};

class SimpleWindowDelegate : public WindowDelegate {
 public:
  explicit SimpleWindowDelegate(View* contents) : contents_(contents) {  }

  virtual void DeleteDelegate() { delete this; }

  virtual View* GetContentsView() { return contents_; }

 private:
  View* contents_;
};

// Tests that the mouse-wheel messages are correctly rerouted to the window
// under the mouse.
// TODO(jcampan): http://crbug.com/10572 Disabled as it fails on the Vista build
//                bot.
TEST_F(ViewTest, FAILS_RerouteMouseWheelTest) {
  TestViewWithControls* view_with_controls = new TestViewWithControls();
  views::Window* window1 =
      views::Window::CreateChromeWindow(
          NULL, gfx::Rect(0, 0, 100, 100),
          new SimpleWindowDelegate(view_with_controls));
  window1->Show();
  ScrollView* scroll_view = new ScrollView();
  scroll_view->SetContents(new ScrollableTestView());
  views::Window* window2 =
      views::Window::CreateChromeWindow(NULL, gfx::Rect(200, 200, 100, 100),
                                        new SimpleWindowDelegate(scroll_view));
  window2->Show();
  EXPECT_EQ(0, scroll_view->GetVisibleRect().y());

  // Make the window1 active, as this is what it would be in real-world.
  window1->Activate();

  // Let's send a mouse-wheel message to the different controls and check that
  // it is rerouted to the window under the mouse (effectively scrolling the
  // scroll-view).

  // First to the Window's HWND.
  ::SendMessage(view_with_controls->GetWidget()->GetNativeView(),
                WM_MOUSEWHEEL, MAKEWPARAM(0, -20), MAKELPARAM(250, 250));
  EXPECT_EQ(20, scroll_view->GetVisibleRect().y());

  // Then the button.
  ::SendMessage(view_with_controls->button_->GetHWND(),
                WM_MOUSEWHEEL, MAKEWPARAM(0, -20), MAKELPARAM(250, 250));
  EXPECT_EQ(40, scroll_view->GetVisibleRect().y());

  // Then the check-box.
  ::SendMessage(view_with_controls->checkbox_->GetHWND(),
                WM_MOUSEWHEEL, MAKEWPARAM(0, -20), MAKELPARAM(250, 250));
  EXPECT_EQ(60, scroll_view->GetVisibleRect().y());

  // Then the text-field.
  ::SendMessage(view_with_controls->text_field_->GetTestingHandle(),
                WM_MOUSEWHEEL, MAKEWPARAM(0, -20), MAKELPARAM(250, 250));
  EXPECT_EQ(80, scroll_view->GetVisibleRect().y());

  // Ensure we don't scroll when the mouse is not over that window.
  ::SendMessage(view_with_controls->text_field_->GetTestingHandle(),
                WM_MOUSEWHEEL, MAKEWPARAM(0, -20), MAKELPARAM(50, 50));
  EXPECT_EQ(80, scroll_view->GetVisibleRect().y());
}
#endif

////////////////////////////////////////////////////////////////////////////////
// Dialogs' default button
////////////////////////////////////////////////////////////////////////////////

class TestDialog : public DialogDelegate, public ButtonListener {
 public:
  TestDialog()
      : contents_(NULL),
        button1_(NULL),
        button2_(NULL),
        checkbox_(NULL),
        last_pressed_button_(NULL),
        canceled_(false),
        oked_(false) {
  }

  // views::DialogDelegate implementation:
  virtual int GetDefaultDialogButton() const {
    return MessageBoxFlags::DIALOGBUTTON_OK;
  }

  virtual View* GetContentsView() {
    if (!contents_) {
      contents_ = new View();
      button1_ = new NativeButton(this, L"Button1");
      button2_ = new NativeButton(this, L"Button2");
      checkbox_ = new Checkbox(L"My checkbox");
      contents_->AddChildView(button1_);
      contents_->AddChildView(button2_);
      contents_->AddChildView(checkbox_);
    }
    return contents_;
  }

  // Prevent the dialog from really closing (so we can click the OK/Cancel
  // buttons to our heart's content).
  virtual bool Cancel() {
    canceled_ = true;
    return false;
  }
  virtual bool Accept() {
    oked_ = true;
    return false;
  }

  // views::ButtonListener implementation.
  virtual void ButtonPressed(Button* sender, const views::Event& event) {
    last_pressed_button_ = sender;
  }

  void ResetStates() {
    oked_ = false;
    canceled_ = false;
    last_pressed_button_ = NULL;
  }

  View* contents_;
  NativeButton* button1_;
  NativeButton* button2_;
  NativeButton* checkbox_;
  Button* last_pressed_button_;

  bool canceled_;
  bool oked_;
};

class DefaultButtonTest : public ViewTest {
 public:
  enum ButtonID {
    OK,
    CANCEL,
    BUTTON1,
    BUTTON2
  };

  DefaultButtonTest()
      : focus_manager_(NULL),
        test_dialog_(NULL),
        client_view_(NULL),
        ok_button_(NULL),
        cancel_button_(NULL) {
  }

  virtual void SetUp() {
    test_dialog_ = new TestDialog();
    views::Window* window =
        views::Window::CreateChromeWindow(NULL, gfx::Rect(0, 0, 100, 100),
                                          test_dialog_);
    window->Show();
    focus_manager_ = test_dialog_->contents_->GetFocusManager();
    ASSERT_TRUE(focus_manager_ != NULL);
    client_view_ =
        static_cast<views::DialogClientView*>(window->GetClientView());
    ok_button_ = client_view_->ok_button();
    cancel_button_ = client_view_->cancel_button();
  }

  void SimularePressingEnterAndCheckDefaultButton(ButtonID button_id) {
    KeyEvent event(Event::ET_KEY_PRESSED, base::VKEY_RETURN, 0, 0, 0);
    focus_manager_->OnKeyEvent(event);
    switch (button_id) {
      case OK:
        EXPECT_TRUE(test_dialog_->oked_);
        EXPECT_FALSE(test_dialog_->canceled_);
        EXPECT_FALSE(test_dialog_->last_pressed_button_);
        break;
      case CANCEL:
        EXPECT_FALSE(test_dialog_->oked_);
        EXPECT_TRUE(test_dialog_->canceled_);
        EXPECT_FALSE(test_dialog_->last_pressed_button_);
        break;
      case BUTTON1:
        EXPECT_FALSE(test_dialog_->oked_);
        EXPECT_FALSE(test_dialog_->canceled_);
        EXPECT_TRUE(test_dialog_->last_pressed_button_ ==
            test_dialog_->button1_);
        break;
      case BUTTON2:
        EXPECT_FALSE(test_dialog_->oked_);
        EXPECT_FALSE(test_dialog_->canceled_);
        EXPECT_TRUE(test_dialog_->last_pressed_button_ ==
            test_dialog_->button2_);
        break;
    }
    test_dialog_->ResetStates();
  }

  views::FocusManager* focus_manager_;
  TestDialog* test_dialog_;
  DialogClientView* client_view_;
  views::NativeButton* ok_button_;
  views::NativeButton* cancel_button_;
};

TEST_F(DefaultButtonTest, DialogDefaultButtonTest) {
  // Window has just been shown, we expect the default button specified in the
  // DialogDelegate.
  EXPECT_TRUE(ok_button_->is_default());

  // Simulate pressing enter, that should trigger the OK button.
  SimularePressingEnterAndCheckDefaultButton(OK);

  // Simulate focusing another button, it should become the default button.
  client_view_->FocusWillChange(ok_button_, test_dialog_->button1_);
  EXPECT_FALSE(ok_button_->is_default());
  EXPECT_TRUE(test_dialog_->button1_->is_default());
  // Simulate pressing enter, that should trigger button1.
  SimularePressingEnterAndCheckDefaultButton(BUTTON1);

  // Now select something that is not a button, the OK should become the default
  // button again.
  client_view_->FocusWillChange(test_dialog_->button1_,
                                test_dialog_->checkbox_);
  EXPECT_TRUE(ok_button_->is_default());
  EXPECT_FALSE(test_dialog_->button1_->is_default());
  SimularePressingEnterAndCheckDefaultButton(OK);

  // Select yet another button.
  client_view_->FocusWillChange(test_dialog_->checkbox_,
                                test_dialog_->button2_);
  EXPECT_FALSE(ok_button_->is_default());
  EXPECT_FALSE(test_dialog_->button1_->is_default());
  EXPECT_TRUE(test_dialog_->button2_->is_default());
  SimularePressingEnterAndCheckDefaultButton(BUTTON2);

  // Focus nothing.
  client_view_->FocusWillChange(test_dialog_->button2_, NULL);
  EXPECT_TRUE(ok_button_->is_default());
  EXPECT_FALSE(test_dialog_->button1_->is_default());
  EXPECT_FALSE(test_dialog_->button2_->is_default());
  SimularePressingEnterAndCheckDefaultButton(OK);

  // Focus the cancel button.
  client_view_->FocusWillChange(NULL, cancel_button_);
  EXPECT_FALSE(ok_button_->is_default());
  EXPECT_TRUE(cancel_button_->is_default());
  EXPECT_FALSE(test_dialog_->button1_->is_default());
  EXPECT_FALSE(test_dialog_->button2_->is_default());
  SimularePressingEnterAndCheckDefaultButton(CANCEL);
}

////////////////////////////////////////////////////////////////////////////////
// View hierachy / Visibility changes
////////////////////////////////////////////////////////////////////////////////
/*
TEST_F(ViewTest, ChangeVisibility) {
#if defined(OS_LINUX)
  // Make CRITICAL messages fatal
  // TODO(oshima): we probably should enable this for entire tests on linux.
  g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
#endif
  scoped_ptr<views::Widget> window(CreateWidget());
  window->Init(NULL, gfx::Rect(0, 0, 500, 300));
  views::RootView* root_view = window->GetRootView();
  NativeButton* native = new NativeButton(NULL, L"Native");

  root_view->SetContentsView(native);
  native->SetVisible(true);

  root_view->RemoveChildView(native);
  native->SetVisible(false);
  // Change visibility to true with no widget.
  native->SetVisible(true);

  root_view->SetContentsView(native);
  native->SetVisible(true);
}
*/

////////////////////////////////////////////////////////////////////////////////
// Native view hierachy
////////////////////////////////////////////////////////////////////////////////
class TestNativeViewHierarchy : public views::View {
 public:
  TestNativeViewHierarchy() {
  }

  virtual void NativeViewHierarchyChanged(bool attached,
                                          gfx::NativeView native_view,
                                          RootView* root_view) {
    NotificationInfo info;
    info.attached = attached;
    info.native_view = native_view;
    info.root_view = root_view;
    notifications_.push_back(info);
  };
  struct NotificationInfo {
    bool attached;
    gfx::NativeView native_view;
    RootView* root_view;
  };
  static const size_t kTotalViews = 2;
  std::vector<NotificationInfo> notifications_;
};

class TestChangeNativeViewHierarchy {
 public:
  explicit TestChangeNativeViewHierarchy(ViewTest *view_test) {
    view_test_ = view_test;
    native_host_ = new views::NativeViewHost();
    host_ = view_test->CreateWidget();
    host_->Init(NULL, gfx::Rect(0, 0, 500, 300));
    host_->GetRootView()->AddChildView(native_host_);
    for (size_t i = 0; i < TestNativeViewHierarchy::kTotalViews; ++i) {
      windows_[i] = view_test->CreateWidget();
      windows_[i]->Init(host_->GetNativeView(), gfx::Rect(0, 0, 500, 300));
      root_views_[i] = windows_[i]->GetRootView();
      test_views_[i] = new TestNativeViewHierarchy;
      root_views_[i]->AddChildView(test_views_[i]);
    }
  }

  ~TestChangeNativeViewHierarchy() {
    for (size_t i = 0; i < TestNativeViewHierarchy::kTotalViews; ++i) {
      windows_[i]->Close();
    }
    host_->Close();
    // Will close and self-delete widgets - no need to manually delete them.
    view_test_->RunPendingMessages();
  }

  void CheckEnumeratingRootViews() {
    std::vector<RootView*> enumerated_root_views;
#if defined(OS_WIN)
    views::Widget::FindAllRootViews(host_->GetNativeView(),
                                    &enumerated_root_views);
#else
    // host_->GetNativeView() returns gfx::NativeView which is GtkWidget on
    // systems other than Windows and views::Widget::FindAllRootViews()
    // requires GtkWindow.
    if (host_->GetWindow()) {
      views::Widget::FindAllRootViews(host_->GetWindow()->GetNativeWindow(),
                                      &enumerated_root_views);
    } else {
      return;
    }
#endif
    EXPECT_EQ(TestNativeViewHierarchy::kTotalViews + 1,
              enumerated_root_views.size());
    // Unfortunately there is no guarantee the sequence of views here so always
    // go through all of them.
    for (std::vector<RootView*>::iterator i = enumerated_root_views.begin();
         i != enumerated_root_views.end(); ++i) {
      if (host_->GetRootView() == *i)
        continue;
      size_t j;
      for (j = 0; j < TestNativeViewHierarchy::kTotalViews; ++j)
        if (root_views_[j] == *i)
          break;
      // EXPECT_LT/GT/GE() fails to compile with class-defined constants
      // with gcc, with error
      // "error: undefined reference to 'TestNativeViewHierarchy::kTotalViews'"
      // so I forced to use EXPECT_TRUE() instead.
      EXPECT_TRUE(TestNativeViewHierarchy::kTotalViews > j);
    }
  }

  void CheckChangingHierarhy() {
    size_t i;
    for (i = 0; i < TestNativeViewHierarchy::kTotalViews; ++i) {
      // TODO(georgey): use actual hierarchy changes to send notifications.
      root_views_[i]->NotifyNativeViewHierarchyChanged(false,
          host_->GetNativeView());
      root_views_[i]->NotifyNativeViewHierarchyChanged(true,
          host_->GetNativeView());
    }
    for (i = 0; i < TestNativeViewHierarchy::kTotalViews; ++i) {
      ASSERT_EQ(static_cast<size_t>(2), test_views_[i]->notifications_.size());
      EXPECT_FALSE(test_views_[i]->notifications_[0].attached);
      EXPECT_EQ(host_->GetNativeView(),
          test_views_[i]->notifications_[0].native_view);
      EXPECT_EQ(root_views_[i], test_views_[i]->notifications_[0].root_view);
      EXPECT_TRUE(test_views_[i]->notifications_[1].attached);
      EXPECT_EQ(host_->GetNativeView(),
          test_views_[i]->notifications_[1].native_view);
      EXPECT_EQ(root_views_[i], test_views_[i]->notifications_[1].root_view);
    }
  }

  views::NativeViewHost* native_host_;
  views::Widget* host_;
  views::Widget* windows_[TestNativeViewHierarchy::kTotalViews];
  views::RootView* root_views_[TestNativeViewHierarchy::kTotalViews];
  TestNativeViewHierarchy* test_views_[TestNativeViewHierarchy::kTotalViews];
  ViewTest* view_test_;
};

TEST_F(ViewTest, ChangeNativeViewHierarchyFindRoots) {
  // TODO(georgey): Fix the test for Linux
#if defined(OS_WIN)
  TestChangeNativeViewHierarchy test(this);
  test.CheckEnumeratingRootViews();
#endif
}

TEST_F(ViewTest, ChangeNativeViewHierarchyChangeHierarchy) {
  // TODO(georgey): Fix the test for Linux
#if defined(OS_WIN)
  TestChangeNativeViewHierarchy test(this);
  test.CheckChangingHierarhy();
#endif
}