// 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 "ui/app_list/views/apps_grid_view.h"

#include <string>

#include "base/basictypes.h"
#include "base/command_line.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/app_list/app_list_constants.h"
#include "ui/app_list/app_list_folder_item.h"
#include "ui/app_list/app_list_item.h"
#include "ui/app_list/app_list_model.h"
#include "ui/app_list/app_list_switches.h"
#include "ui/app_list/pagination_model.h"
#include "ui/app_list/test/app_list_test_model.h"
#include "ui/app_list/views/app_list_item_view.h"
#include "ui/app_list/views/apps_grid_view_folder_delegate.h"
#include "ui/app_list/views/test/apps_grid_view_test_api.h"
#include "ui/views/test/views_test_base.h"

namespace app_list {
namespace test {

namespace {

const int kIconDimension = 48;
const int kCols = 2;
const int kRows = 2;
const int kTilesPerPage = kCols * kRows;

const int kWidth = 320;
const int kHeight = 240;

class PageFlipWaiter : public PaginationModelObserver {
 public:
  PageFlipWaiter(base::MessageLoopForUI* ui_loop, PaginationModel* model)
      : ui_loop_(ui_loop), model_(model), wait_(false) {
    model_->AddObserver(this);
  }

  virtual ~PageFlipWaiter() {
    model_->RemoveObserver(this);
  }

  void Wait() {
    DCHECK(!wait_);
    wait_ = true;

    ui_loop_->Run();
    wait_ = false;
  }

  void Reset() { selected_pages_.clear(); }

  const std::string& selected_pages() const { return selected_pages_; }

 private:
  // PaginationModelObserver overrides:
  virtual void TotalPagesChanged() OVERRIDE {
  }
  virtual void SelectedPageChanged(int old_selected,
                                   int new_selected) OVERRIDE {
    if (!selected_pages_.empty())
      selected_pages_ += ',';
    selected_pages_ += base::IntToString(new_selected);

    if (wait_)
      ui_loop_->Quit();
  }
  virtual void TransitionStarted() OVERRIDE {
  }
  virtual void TransitionChanged() OVERRIDE {
  }

  base::MessageLoopForUI* ui_loop_;
  PaginationModel* model_;
  bool wait_;
  std::string selected_pages_;

  DISALLOW_COPY_AND_ASSIGN(PageFlipWaiter);
};

}  // namespace

class AppsGridViewTest : public views::ViewsTestBase {
 public:
  AppsGridViewTest() {}
  virtual ~AppsGridViewTest() {}

  // testing::Test overrides:
  virtual void SetUp() OVERRIDE {
    views::ViewsTestBase::SetUp();
    model_.reset(new AppListTestModel);
    model_->SetFoldersEnabled(true);

    apps_grid_view_.reset(new AppsGridView(NULL));
    apps_grid_view_->SetLayout(kIconDimension, kCols, kRows);
    apps_grid_view_->SetBoundsRect(gfx::Rect(gfx::Size(kWidth, kHeight)));
    apps_grid_view_->SetModel(model_.get());
    apps_grid_view_->SetItemList(model_->top_level_item_list());

    test_api_.reset(new AppsGridViewTestApi(apps_grid_view_.get()));
  }
  virtual void TearDown() OVERRIDE {
    apps_grid_view_.reset();  // Release apps grid view before models.
    views::ViewsTestBase::TearDown();
  }

 protected:
  void EnsureFoldersEnabled() {
    // Folders require AppList sync to be enabled.
    CommandLine::ForCurrentProcess()->AppendSwitch(
        switches::kEnableSyncAppList);
  }

  AppListItemView* GetItemViewAt(int index) {
    return static_cast<AppListItemView*>(
        test_api_->GetViewAtModelIndex(index));
  }

  AppListItemView* GetItemViewForPoint(const gfx::Point& point) {
    for (size_t i = 0; i < model_->top_level_item_list()->item_count(); ++i) {
      AppListItemView* view = GetItemViewAt(i);
      if (view->bounds().Contains(point))
        return view;
    }
    return NULL;
  }

  gfx::Rect GetItemTileRectAt(int row, int col) {
    DCHECK_GT(model_->top_level_item_list()->item_count(), 0u);

    gfx::Insets insets(apps_grid_view_->GetInsets());
    gfx::Rect rect(gfx::Point(insets.left(), insets.top()),
                   GetItemViewAt(0)->bounds().size());
    rect.Offset(col * rect.width(), row * rect.height());
    return rect;
  }

  PaginationModel* GetPaginationModel() {
    return apps_grid_view_->pagination_model();
  }

  // Points are in |apps_grid_view_|'s coordinates.
  void SimulateDrag(AppsGridView::Pointer pointer,
                    const gfx::Point& from,
                    const gfx::Point& to) {
    AppListItemView* view = GetItemViewForPoint(from);
    DCHECK(view);

    gfx::Point translated_from = gfx::PointAtOffsetFromOrigin(
        from - view->bounds().origin());
    gfx::Point translated_to = gfx::PointAtOffsetFromOrigin(
        to - view->bounds().origin());

    ui::MouseEvent pressed_event(ui::ET_MOUSE_PRESSED,
                                 translated_from, from, 0, 0);
    apps_grid_view_->InitiateDrag(view, pointer, pressed_event);

    ui::MouseEvent drag_event(ui::ET_MOUSE_DRAGGED,
                              translated_to, to, 0, 0);
    apps_grid_view_->UpdateDragFromItem(pointer, drag_event);
  }

  void SimulateKeyPress(ui::KeyboardCode key_code) {
    ui::KeyEvent key_event(ui::ET_KEY_PRESSED, key_code, 0, false);
    apps_grid_view_->OnKeyPressed(key_event);
  }

  scoped_ptr<AppListTestModel> model_;
  scoped_ptr<AppsGridView> apps_grid_view_;
  scoped_ptr<AppsGridViewTestApi> test_api_;

 private:
  DISALLOW_COPY_AND_ASSIGN(AppsGridViewTest);
};

class TestAppsGridViewFolderDelegate : public AppsGridViewFolderDelegate {
 public:
  TestAppsGridViewFolderDelegate() : show_bubble_(false) {}
  virtual ~TestAppsGridViewFolderDelegate() {}

  // Overridden from AppsGridViewFolderDelegate:
  virtual void UpdateFolderViewBackground(bool show_bubble) OVERRIDE {
    show_bubble_ = show_bubble;
  }

  virtual void ReparentItem(AppListItemView* original_drag_view,
                            const gfx::Point& drag_point_in_folder_grid)
      OVERRIDE {}

  virtual void DispatchDragEventForReparent(
      AppsGridView::Pointer pointer,
      const gfx::Point& drag_point_in_folder_grid) OVERRIDE {}

  virtual void DispatchEndDragEventForReparent(
      bool events_forwarded_to_drag_drop_host,
      bool cancel_drag) OVERRIDE {}

  virtual bool IsPointOutsideOfFolderBoundary(const gfx::Point& point)
      OVERRIDE {
    return false;
  }

  virtual bool IsOEMFolder() const OVERRIDE { return false; }

  virtual void SetRootLevelDragViewVisible(bool visible) OVERRIDE {}

  bool show_bubble() { return show_bubble_; }

 private:
  bool show_bubble_;

  DISALLOW_COPY_AND_ASSIGN(TestAppsGridViewFolderDelegate);
};

TEST_F(AppsGridViewTest, CreatePage) {
  // Fully populates a page.
  const int kPages = 1;
  model_->PopulateApps(kPages * kTilesPerPage);
  EXPECT_EQ(kPages, GetPaginationModel()->total_pages());

  // Adds one more and gets a new page created.
  model_->CreateAndAddItem("Extra");
  EXPECT_EQ(kPages + 1, GetPaginationModel()->total_pages());
}

TEST_F(AppsGridViewTest, EnsureHighlightedVisible) {
  const int kPages = 3;
  model_->PopulateApps(kPages * kTilesPerPage);
  EXPECT_EQ(kPages, GetPaginationModel()->total_pages());
  EXPECT_EQ(0, GetPaginationModel()->selected_page());

  // Highlight first one and last one one first page and first page should be
  // selected.
  model_->HighlightItemAt(0);
  EXPECT_EQ(0, GetPaginationModel()->selected_page());
  model_->HighlightItemAt(kTilesPerPage - 1);
  EXPECT_EQ(0, GetPaginationModel()->selected_page());

  // Highlight first one on 2nd page and 2nd page should be selected.
  model_->HighlightItemAt(kTilesPerPage + 1);
  EXPECT_EQ(1, GetPaginationModel()->selected_page());

  // Highlight last one in the model and last page should be selected.
  model_->HighlightItemAt(model_->top_level_item_list()->item_count() - 1);
  EXPECT_EQ(kPages - 1, GetPaginationModel()->selected_page());
}

TEST_F(AppsGridViewTest, RemoveSelectedLastApp) {
  const int kTotalItems = 2;
  const int kLastItemIndex = kTotalItems - 1;

  model_->PopulateApps(kTotalItems);

  AppListItemView* last_view = GetItemViewAt(kLastItemIndex);
  apps_grid_view_->SetSelectedView(last_view);
  model_->DeleteItem(model_->GetItemName(kLastItemIndex));

  EXPECT_FALSE(apps_grid_view_->IsSelectedView(last_view));

  // No crash happens.
  AppListItemView* view = GetItemViewAt(0);
  apps_grid_view_->SetSelectedView(view);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(view));
}

TEST_F(AppsGridViewTest, MouseDragWithFolderDisabled) {
  model_->SetFoldersEnabled(false);
  const int kTotalItems = 4;
  model_->PopulateApps(kTotalItems);
  EXPECT_EQ(std::string("Item 0,Item 1,Item 2,Item 3"),
            model_->GetModelContent());

  gfx::Point from = GetItemTileRectAt(0, 0).CenterPoint();
  gfx::Point to = GetItemTileRectAt(0, 1).CenterPoint();

  // Dragging changes model order.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(std::string("Item 1,Item 0,Item 2,Item 3"),
            model_->GetModelContent());
  test_api_->LayoutToIdealBounds();

  // Canceling drag should keep existing order.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  apps_grid_view_->EndDrag(true);
  EXPECT_EQ(std::string("Item 1,Item 0,Item 2,Item 3"),
            model_->GetModelContent());
  test_api_->LayoutToIdealBounds();

  // Deleting an item keeps remaining intact.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  model_->DeleteItem(model_->GetItemName(0));
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(std::string("Item 1,Item 2,Item 3"),
            model_->GetModelContent());
  test_api_->LayoutToIdealBounds();

  // Adding a launcher item cancels the drag and respects the order.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  model_->CreateAndAddItem("Extra");
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(std::string("Item 1,Item 2,Item 3,Extra"),
            model_->GetModelContent());
  test_api_->LayoutToIdealBounds();
}

TEST_F(AppsGridViewTest, MouseDragItemIntoFolder) {
  EnsureFoldersEnabled();

  size_t kTotalItems = 3;
  model_->PopulateApps(kTotalItems);
  EXPECT_EQ(model_->top_level_item_list()->item_count(), kTotalItems);
  EXPECT_EQ(std::string("Item 0,Item 1,Item 2"), model_->GetModelContent());

  gfx::Point from = GetItemTileRectAt(0, 1).CenterPoint();
  gfx::Point to = GetItemTileRectAt(0, 0).CenterPoint();

  // Dragging item_1 over item_0 creates a folder.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(kTotalItems - 1, model_->top_level_item_list()->item_count());
  EXPECT_EQ(AppListFolderItem::kItemType,
            model_->top_level_item_list()->item_at(0)->GetItemType());
  AppListFolderItem* folder_item = static_cast<AppListFolderItem*>(
      model_->top_level_item_list()->item_at(0));
  EXPECT_EQ(2u, folder_item->ChildItemCount());
  AppListItem* item_0 = model_->FindItem("Item 0");
  EXPECT_TRUE(item_0->IsInFolder());
  EXPECT_EQ(folder_item->id(), item_0->folder_id());
  AppListItem* item_1 = model_->FindItem("Item 1");
  EXPECT_TRUE(item_1->IsInFolder());
  EXPECT_EQ(folder_item->id(), item_1->folder_id());
  std::string expected_items = folder_item->id() + ",Item 2";
  EXPECT_EQ(expected_items, model_->GetModelContent());
  test_api_->LayoutToIdealBounds();

  // Dragging item_2 to the folder adds item_2 to the folder.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  apps_grid_view_->EndDrag(false);

  EXPECT_EQ(kTotalItems - 2, model_->top_level_item_list()->item_count());
  EXPECT_EQ(folder_item->id(), model_->GetModelContent());
  EXPECT_EQ(3u, folder_item->ChildItemCount());
  item_0 = model_->FindItem("Item 0");
  EXPECT_TRUE(item_0->IsInFolder());
  EXPECT_EQ(folder_item->id(), item_0->folder_id());
  item_1 = model_->FindItem("Item 1");
  EXPECT_TRUE(item_1->IsInFolder());
  EXPECT_EQ(folder_item->id(), item_1->folder_id());
  AppListItem* item_2 = model_->FindItem("Item 2");
  EXPECT_TRUE(item_2->IsInFolder());
  EXPECT_EQ(folder_item->id(), item_2->folder_id());
  test_api_->LayoutToIdealBounds();
}

TEST_F(AppsGridViewTest, MouseDragMaxItemsInFolder) {
  EnsureFoldersEnabled();

  // Create and add a folder with 15 items in it.
  size_t kTotalItems = kMaxFolderItems - 1;
  model_->CreateAndPopulateFolderWithApps(kTotalItems);
  EXPECT_EQ(1u, model_->top_level_item_list()->item_count());
  EXPECT_EQ(AppListFolderItem::kItemType,
            model_->top_level_item_list()->item_at(0)->GetItemType());
  AppListFolderItem* folder_item = static_cast<AppListFolderItem*>(
      model_->top_level_item_list()->item_at(0));
  EXPECT_EQ(kTotalItems, folder_item->ChildItemCount());

  // Create and add another 2 items.
  model_->PopulateAppWithId(kTotalItems);
  model_->PopulateAppWithId(kTotalItems + 1);
  EXPECT_EQ(3u, model_->top_level_item_list()->item_count());
  EXPECT_EQ(folder_item->id(), model_->top_level_item_list()->item_at(0)->id());
  EXPECT_EQ(model_->GetItemName(kMaxFolderItems - 1),
            model_->top_level_item_list()->item_at(1)->id());
  EXPECT_EQ(model_->GetItemName(kMaxFolderItems),
            model_->top_level_item_list()->item_at(2)->id());

  gfx::Point from = GetItemTileRectAt(0, 1).CenterPoint();
  gfx::Point to = GetItemTileRectAt(0, 0).CenterPoint();

  // Dragging one item into the folder, the folder should accept the item.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(2u, model_->top_level_item_list()->item_count());
  EXPECT_EQ(folder_item->id(), model_->top_level_item_list()->item_at(0)->id());
  EXPECT_EQ(kMaxFolderItems, folder_item->ChildItemCount());
  EXPECT_EQ(model_->GetItemName(kMaxFolderItems),
            model_->top_level_item_list()->item_at(1)->id());
  test_api_->LayoutToIdealBounds();

  // Dragging the last item over the folder, the folder won't accept the new
  // item, instead, it will re-order the items.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(2u, model_->top_level_item_list()->item_count());
  EXPECT_EQ(model_->GetItemName(kMaxFolderItems),
            model_->top_level_item_list()->item_at(0)->id());
  EXPECT_EQ(folder_item->id(), model_->top_level_item_list()->item_at(1)->id());
  EXPECT_EQ(kMaxFolderItems, folder_item->ChildItemCount());
  test_api_->LayoutToIdealBounds();
}

TEST_F(AppsGridViewTest, MouseDragItemReorder) {
  // This test assumes Folders are enabled.
  EnsureFoldersEnabled();

  size_t kTotalItems = 2;
  model_->PopulateApps(kTotalItems);
  EXPECT_EQ(2u, model_->top_level_item_list()->item_count());
  EXPECT_EQ(std::string("Item 0,Item 1"), model_->GetModelContent());

  gfx::Point from = GetItemTileRectAt(0, 1).CenterPoint();
  int reorder_offset = (GetItemTileRectAt(0, 1).CenterPoint() -
                        GetItemTileRectAt(0, 0).CenterPoint()).Length() -
                       kReorderDroppingCircleRadius -
                       kPreferredIconDimension / 2 + 5;
  gfx::Point to = gfx::Point(from.x() - reorder_offset, from.y());

  // Dragging item_1 closing to item_0 should leads to re-ordering these two
  // items.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(2u, model_->top_level_item_list()->item_count());
  EXPECT_EQ(std::string("Item 1,Item 0"), model_->GetModelContent());
  test_api_->LayoutToIdealBounds();
}

TEST_F(AppsGridViewTest, MouseDragFolderReorder) {
  EnsureFoldersEnabled();

  size_t kTotalItems = 2;
  model_->CreateAndPopulateFolderWithApps(kTotalItems);
  model_->PopulateAppWithId(kTotalItems);
  EXPECT_EQ(2u, model_->top_level_item_list()->item_count());
  EXPECT_EQ(AppListFolderItem::kItemType,
            model_->top_level_item_list()->item_at(0)->GetItemType());
  AppListFolderItem* folder_item = static_cast<AppListFolderItem*>(
      model_->top_level_item_list()->item_at(0));
  EXPECT_EQ("Item 2", model_->top_level_item_list()->item_at(1)->id());

  gfx::Point from = GetItemTileRectAt(0, 0).CenterPoint();
  gfx::Point to = GetItemTileRectAt(0, 1).CenterPoint();

  // Dragging folder over item_1 should leads to re-ordering these two
  // items.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(2u, model_->top_level_item_list()->item_count());
  EXPECT_EQ("Item 2", model_->top_level_item_list()->item_at(0)->id());
  EXPECT_EQ(folder_item->id(), model_->top_level_item_list()->item_at(1)->id());
  test_api_->LayoutToIdealBounds();
}

TEST_F(AppsGridViewTest, MouseDragWithCancelDeleteAddItem) {
  size_t kTotalItems = 4;
  model_->PopulateApps(kTotalItems);
  EXPECT_EQ(model_->top_level_item_list()->item_count(), kTotalItems);
  EXPECT_EQ(std::string("Item 0,Item 1,Item 2,Item 3"),
            model_->GetModelContent());

  gfx::Point from = GetItemTileRectAt(0, 0).CenterPoint();
  gfx::Point to = GetItemTileRectAt(0, 1).CenterPoint();

  // Canceling drag should keep existing order.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  apps_grid_view_->EndDrag(true);
  EXPECT_EQ(std::string("Item 0,Item 1,Item 2,Item 3"),
            model_->GetModelContent());
  test_api_->LayoutToIdealBounds();

  // Deleting an item keeps remaining intact.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  model_->DeleteItem(model_->GetItemName(2));
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(std::string("Item 0,Item 1,Item 3"), model_->GetModelContent());
  test_api_->LayoutToIdealBounds();

  // Adding a launcher item cancels the drag and respects the order.
  SimulateDrag(AppsGridView::MOUSE, from, to);
  model_->CreateAndAddItem("Extra");
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(std::string("Item 0,Item 1,Item 3,Extra"),
            model_->GetModelContent());
  test_api_->LayoutToIdealBounds();
}

TEST_F(AppsGridViewTest, MouseDragFlipPage) {
  test_api_->SetPageFlipDelay(10);
  GetPaginationModel()->SetTransitionDurations(10, 10);

  PageFlipWaiter page_flip_waiter(message_loop(), GetPaginationModel());

  const int kPages = 3;
  model_->PopulateApps(kPages * kTilesPerPage);
  EXPECT_EQ(kPages, GetPaginationModel()->total_pages());
  EXPECT_EQ(0, GetPaginationModel()->selected_page());

  gfx::Point from = GetItemTileRectAt(0, 0).CenterPoint();
  gfx::Point to = gfx::Point(apps_grid_view_->width(),
                             apps_grid_view_->height() / 2);

  // Drag to right edge.
  page_flip_waiter.Reset();
  SimulateDrag(AppsGridView::MOUSE, from, to);

  // Page should be flipped after sometime to hit page 1 and 2 then stop.
  while (test_api_->HasPendingPageFlip()) {
    page_flip_waiter.Wait();
  }
  EXPECT_EQ("1,2", page_flip_waiter.selected_pages());
  EXPECT_EQ(2, GetPaginationModel()->selected_page());

  apps_grid_view_->EndDrag(true);

  // Now drag to the left edge and test the other direction.
  to.set_x(0);

  page_flip_waiter.Reset();
  SimulateDrag(AppsGridView::MOUSE, from, to);

  while (test_api_->HasPendingPageFlip()) {
    page_flip_waiter.Wait();
  }
  EXPECT_EQ("1,0", page_flip_waiter.selected_pages());
  EXPECT_EQ(0, GetPaginationModel()->selected_page());

  apps_grid_view_->EndDrag(true);
}

TEST_F(AppsGridViewTest, SimultaneousDragWithFolderDisabled) {
  model_->SetFoldersEnabled(false);
  const int kTotalItems = 4;
  model_->PopulateApps(kTotalItems);
  EXPECT_EQ(std::string("Item 0,Item 1,Item 2,Item 3"),
            model_->GetModelContent());

  gfx::Point mouse_from = GetItemTileRectAt(0, 0).CenterPoint();
  gfx::Point mouse_to = GetItemTileRectAt(0, 1).CenterPoint();

  gfx::Point touch_from = GetItemTileRectAt(1, 0).CenterPoint();
  gfx::Point touch_to = GetItemTileRectAt(1, 1).CenterPoint();

  // Starts a mouse drag first then a touch drag.
  SimulateDrag(AppsGridView::MOUSE, mouse_from, mouse_to);
  SimulateDrag(AppsGridView::TOUCH, touch_from, touch_to);
  // Finishes the drag and mouse drag wins.
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(std::string("Item 1,Item 0,Item 2,Item 3"),
            model_->GetModelContent());
  test_api_->LayoutToIdealBounds();

  // Starts a touch drag first then a mouse drag.
  SimulateDrag(AppsGridView::TOUCH, touch_from, touch_to);
  SimulateDrag(AppsGridView::MOUSE, mouse_from, mouse_to);
  // Finishes the drag and touch drag wins.
  apps_grid_view_->EndDrag(false);
  EXPECT_EQ(std::string("Item 1,Item 0,Item 3,Item 2"),
            model_->GetModelContent());
  test_api_->LayoutToIdealBounds();
}

TEST_F(AppsGridViewTest, UpdateFolderBackgroundOnCancelDrag) {
  EnsureFoldersEnabled();

  const int kTotalItems = 4;
  TestAppsGridViewFolderDelegate folder_delegate;
  apps_grid_view_->set_folder_delegate(&folder_delegate);
  model_->PopulateApps(kTotalItems);
  EXPECT_EQ(std::string("Item 0,Item 1,Item 2,Item 3"),
            model_->GetModelContent());

  gfx::Point mouse_from = GetItemTileRectAt(0, 0).CenterPoint();
  gfx::Point mouse_to = GetItemTileRectAt(0, 1).CenterPoint();

  // Starts a mouse drag and then cancels it.
  SimulateDrag(AppsGridView::MOUSE, mouse_from, mouse_to);
  EXPECT_TRUE(folder_delegate.show_bubble());
  apps_grid_view_->EndDrag(true);
  EXPECT_FALSE(folder_delegate.show_bubble());
  EXPECT_EQ(std::string("Item 0,Item 1,Item 2,Item 3"),
            model_->GetModelContent());
}

TEST_F(AppsGridViewTest, HighlightWithKeyboard) {
  const int kPages = 3;
  const int kItems = (kPages - 1) * kTilesPerPage + 1;
  model_->PopulateApps(kItems);

  const int first_index = 0;
  const int last_index = kItems - 1;
  const int last_index_on_page1_first_row = kRows - 1;
  const int last_index_on_page1 = kTilesPerPage - 1;
  const int first_index_on_page2 = kTilesPerPage;
  const int first_index_on_page2_last_row = 2 * kTilesPerPage - kRows;
  const int last_index_on_page2_last_row = 2 * kTilesPerPage - 1;

  // Try moving off the item beyond the first one.
  apps_grid_view_->SetSelectedView(GetItemViewAt(first_index));
  SimulateKeyPress(ui::VKEY_UP);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(first_index)));
  SimulateKeyPress(ui::VKEY_LEFT);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(first_index)));

  // Move to the last item and try to go past it.
  apps_grid_view_->SetSelectedView(GetItemViewAt(last_index));
  SimulateKeyPress(ui::VKEY_DOWN);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(last_index)));
  SimulateKeyPress(ui::VKEY_RIGHT);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(last_index)));

  // Move right on last item on page 1 should get to first item on page 2's last
  // row and vice versa.
  apps_grid_view_->SetSelectedView(GetItemViewAt(last_index_on_page1));
  SimulateKeyPress(ui::VKEY_RIGHT);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(
      first_index_on_page2_last_row)));
  SimulateKeyPress(ui::VKEY_LEFT);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(
      last_index_on_page1)));

  // Up/down on page boundary does nothing.
  apps_grid_view_->SetSelectedView(GetItemViewAt(last_index_on_page1));
  SimulateKeyPress(ui::VKEY_DOWN);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(
      last_index_on_page1)));
  apps_grid_view_->SetSelectedView(
      GetItemViewAt(first_index_on_page2_last_row));
  apps_grid_view_->
      SetSelectedView(GetItemViewAt(last_index_on_page1_first_row));
  SimulateKeyPress(ui::VKEY_UP);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(
      last_index_on_page1_first_row)));

  // Page up and down should go to the same item on the next and last page.
  apps_grid_view_->SetSelectedView(GetItemViewAt(first_index_on_page2));
  SimulateKeyPress(ui::VKEY_PRIOR);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(
      first_index)));
  SimulateKeyPress(ui::VKEY_NEXT);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(
      first_index_on_page2)));

  // Moving onto a a page with too few apps to support the expected index snaps
  // to the last available index.
  apps_grid_view_->SetSelectedView(GetItemViewAt(last_index_on_page2_last_row));
  SimulateKeyPress(ui::VKEY_RIGHT);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(
      last_index)));
  apps_grid_view_->SetSelectedView(GetItemViewAt(last_index_on_page2_last_row));
  SimulateKeyPress(ui::VKEY_NEXT);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(
      last_index)));


  // After page switch, arrow keys select first item on current page.
  apps_grid_view_->SetSelectedView(GetItemViewAt(first_index));
  GetPaginationModel()->SelectPage(1, false);
  SimulateKeyPress(ui::VKEY_UP);
  EXPECT_TRUE(apps_grid_view_->IsSelectedView(GetItemViewAt(
      first_index_on_page2)));
}

TEST_F(AppsGridViewTest, ItemLabelShortNameOverride) {
  // If the app's full name and short name differ, the title label's tooltip
  // should always be the full name of the app.
  std::string expected_text("xyz");
  std::string expected_tooltip("tooltip");
  AppListItem* item = model_->CreateAndAddItem("Item with short name");
  model_->SetItemNameAndShortName(item, expected_tooltip, expected_text);

  base::string16 actual_tooltip;
  AppListItemView* item_view = GetItemViewAt(0);
  ASSERT_TRUE(item_view);
  const views::Label* title_label = item_view->title();
  EXPECT_TRUE(title_label->GetTooltipText(
      title_label->bounds().CenterPoint(), &actual_tooltip));
  EXPECT_EQ(expected_tooltip, base::UTF16ToUTF8(actual_tooltip));
  EXPECT_EQ(expected_text, base::UTF16ToUTF8(title_label->text()));
}

TEST_F(AppsGridViewTest, ItemLabelNoShortName) {
  // If the app's full name and short name are the same, use the default tooltip
  // behavior of the label (only show a tooltip if the title is truncated).
  std::string title("a");
  AppListItem* item = model_->CreateAndAddItem(title);
  model_->SetItemNameAndShortName(item, title, "");

  base::string16 actual_tooltip;
  AppListItemView* item_view = GetItemViewAt(0);
  ASSERT_TRUE(item_view);
  const views::Label* title_label = item_view->title();
  EXPECT_FALSE(title_label->GetTooltipText(
      title_label->bounds().CenterPoint(), &actual_tooltip));
  EXPECT_EQ(title, base::UTF16ToUTF8(title_label->text()));
}

}  // namespace test
}  // namespace app_list