chrome/browser/ui/views/frame/browser_root_view_browsertest.cc

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/ui/views/frame/browser_root_view.h"

#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "chrome/browser/defaults.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "chrome/browser/ui/views/tabs/tab_strip.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "content/public/test/browser_test.h"
#include "ui/base/dragdrop/drag_drop_types.h"
#include "ui/base/dragdrop/drop_target_event.h"
#include "ui/base/dragdrop/mojom/drag_drop_types.mojom.h"
#include "ui/base/dragdrop/os_exchange_data.h"
#include "ui/compositor/layer_tree_owner.h"
#include "ui/events/base_event_utils.h"

class BrowserRootViewBrowserTest : public InProcessBrowserTest {
 public:
  BrowserRootViewBrowserTest() = default;

  BrowserRootViewBrowserTest(const BrowserRootViewBrowserTest&) = delete;
  BrowserRootViewBrowserTest& operator=(const BrowserRootViewBrowserTest&) =
      delete;

  BrowserRootView* browser_root_view() {
    BrowserView* browser_view = static_cast<BrowserView*>(browser()->window());
    return static_cast<BrowserRootView*>(
        browser_view->GetWidget()->GetRootView());
  }

  void PerformMouseWheelOnTabStrip(const gfx::Vector2d& offset) {
    TabStrip* tabstrip =
        BrowserView::GetBrowserViewForBrowser(browser())->tabstrip();
    const gfx::Point tabstrip_center = tabstrip->GetLocalBounds().CenterPoint();
    const gfx::Point location = views::View::ConvertPointToTarget(
        tabstrip, browser_root_view(), tabstrip_center);
    const gfx::Point root_location =
        views::View::ConvertPointToScreen(tabstrip, tabstrip_center);

    ui::MouseWheelEvent wheel_event(offset, location, root_location,
                                    ui::EventTimeForNow(), /*flags=*/0,
                                    /*changed_button_flags=*/0);
    browser_root_view()->OnMouseWheel(wheel_event);
  }
};

// TODO(https://crbug.com/1220680): These tests produces wayland protocol error
// wl_display.error(xdg_surface, 1, "popup parent not constructed") on LaCrOS
// with Exo.
#if !BUILDFLAG(IS_CHROMEOS_LACROS)
// Clear drop info after performing drop. http://crbug.com/838791
IN_PROC_BROWSER_TEST_F(BrowserRootViewBrowserTest, ClearDropInfo) {
  ui::OSExchangeData data;
  data.SetURL(GURL("http://www.chromium.org/"), std::u16string());
  ui::DropTargetEvent event(data, gfx::PointF(), gfx::PointF(),
                            ui::DragDropTypes::DRAG_COPY);
  auto* tab_strip_model = browser()->tab_strip_model();

  EXPECT_EQ(tab_strip_model->count(), 1);

  BrowserRootView* root_view = browser_root_view();
  root_view->OnDragUpdated(event);
  auto drop_cb = root_view->GetDropCallback(event);
  ui::mojom::DragOperation output_drag_op = ui::mojom::DragOperation::kNone;
  std::move(drop_cb).Run(event, output_drag_op,
                         /*drag_image_layer_owner=*/nullptr);

  EXPECT_EQ(output_drag_op, ui::mojom::DragOperation::kCopy);
  EXPECT_EQ(tab_strip_model->count(), 2);
  EXPECT_FALSE(root_view->drop_info_);
}

// Make sure plain string is droppable. http://crbug.com/838794
// crbug.com/1224945: Flaky on Mac.
#if BUILDFLAG(IS_MAC)
#define MAYBE_PlainString DISABLED_PlainString
#else
#define MAYBE_PlainString PlainString
#endif
IN_PROC_BROWSER_TEST_F(BrowserRootViewBrowserTest, MAYBE_PlainString) {
  ui::OSExchangeData data;
  data.SetString(u"Plain string");
  ui::DropTargetEvent event(data, gfx::PointF(), gfx::PointF(),
                            ui::DragDropTypes::DRAG_COPY);

  BrowserRootView* root_view = browser_root_view();
  EXPECT_NE(ui::DragDropTypes::DRAG_NONE, root_view->OnDragUpdated(event));
  auto cb = root_view->GetDropCallback(event);
  ui::mojom::DragOperation output_drag_op = ui::mojom::DragOperation::kNone;
  std::move(cb).Run(event, output_drag_op, /*drag_image_layer_owner=*/nullptr);
  EXPECT_NE(ui::mojom::DragOperation::kNone, output_drag_op);
}

// Clear drop target when the widget is being destroyed.
// http://crbug.com/1001942
IN_PROC_BROWSER_TEST_F(BrowserRootViewBrowserTest, ClearDropTarget) {
  ui::OSExchangeData data;
  data.SetURL(GURL("http://www.chromium.org/"), std::u16string());
  ui::DropTargetEvent event(data, gfx::PointF(), gfx::PointF(),
                            ui::DragDropTypes::DRAG_COPY);

  browser_root_view()->OnDragUpdated(event);

  // Calling this will cause segmentation fault if |root_view| doesn't clear
  // the target.
  CloseBrowserSynchronously(browser());
}

IN_PROC_BROWSER_TEST_F(BrowserRootViewBrowserTest, OnDragEnteredNoTabs) {
  auto* tab_strip_model = browser()->tab_strip_model();
  EXPECT_EQ(tab_strip_model->count(), 1);
  EXPECT_EQ(tab_strip_model->active_index(), 0);
  tab_strip_model->CloseAllTabs();
  EXPECT_EQ(tab_strip_model->count(), 0);
  EXPECT_EQ(tab_strip_model->active_index(), -1);

  ui::OSExchangeData data;
  data.SetURL(GURL("file:///test.txt"), std::u16string());
  ui::DropTargetEvent event(data, gfx::PointF(), gfx::PointF(),
                            ui::DragDropTypes::DRAG_COPY);

  // Ensure OnDragEntered() doesn't crash when there are no active tabs.
  browser_root_view()->OnDragEntered(event);
}

IN_PROC_BROWSER_TEST_F(BrowserRootViewBrowserTest, WheelTabChange) {
  if (!browser_defaults::kScrollEventChangesTab) {
    GTEST_SKIP() << "Test does not apply to this platform.";
  }

  TabStripModel* model = browser()->tab_strip_model();

  while (model->count() < 2) {
    ASSERT_TRUE(
        AddTabAtIndex(0, GURL(url::kAboutBlankURL), ui::PAGE_TRANSITION_LINK));
  }
  model->ActivateTabAt(1);
  ASSERT_EQ(1, model->active_index());

  const gfx::Vector2d kWheelDown(0, -ui::MouseWheelEvent::kWheelDelta);
  const gfx::Vector2d kWheelUp(0, ui::MouseWheelEvent::kWheelDelta);

  // At the end of the tab strip, scrolling to the next tab does not loop around
  // to the beginning.
  PerformMouseWheelOnTabStrip(kWheelDown);
  EXPECT_EQ(1, model->active_index());

  PerformMouseWheelOnTabStrip(kWheelUp);
  EXPECT_EQ(0, model->active_index());

  // At the beginning of the tab strip, scrolling to the previous tab does not
  // loop around to the end.
  PerformMouseWheelOnTabStrip(kWheelUp);
  EXPECT_EQ(0, model->active_index());

  PerformMouseWheelOnTabStrip(kWheelDown);
  EXPECT_EQ(1, model->active_index());
}

IN_PROC_BROWSER_TEST_F(BrowserRootViewBrowserTest,
                       WheelTabChangeWithCollapsedTabGroups) {
  if (!browser_defaults::kScrollEventChangesTab) {
    GTEST_SKIP() << "Test does not apply to this platform.";
  }

  TabStripModel* model = browser()->tab_strip_model();
  TabStrip* tabstrip =
      BrowserView::GetBrowserViewForBrowser(browser())->tabstrip();
  ASSERT_TRUE(model->SupportsTabGroups());

  // Create 5 tabs, with the leftmost, center, and rightmost in collapsed tab
  // groups.
  while (model->count() < 5) {
    ASSERT_TRUE(
        AddTabAtIndex(0, GURL(url::kAboutBlankURL), ui::PAGE_TRANSITION_LINK));
  }
  model->ActivateTabAt(1);
  tab_groups::TabGroupId left_group = model->AddToNewGroup({0});
  tab_groups::TabGroupId center_group = model->AddToNewGroup({2});
  tab_groups::TabGroupId right_group = model->AddToNewGroup({4});
  tabstrip->ToggleTabGroupCollapsedState(left_group);
  tabstrip->ToggleTabGroupCollapsedState(center_group);
  tabstrip->ToggleTabGroupCollapsedState(right_group);
  ASSERT_EQ(1, model->active_index());
  ASSERT_TRUE(model->IsTabCollapsed(0));
  ASSERT_FALSE(model->IsTabCollapsed(1));
  ASSERT_TRUE(model->IsTabCollapsed(2));
  ASSERT_FALSE(model->IsTabCollapsed(3));
  ASSERT_TRUE(model->IsTabCollapsed(4));

  const gfx::Vector2d kWheelDown(0, -ui::MouseWheelEvent::kWheelDelta);
  const gfx::Vector2d kWheelUp(0, ui::MouseWheelEvent::kWheelDelta);

  // Scrolling to the previous tab from index 1 should do nothing, since the
  // only previous tab is collapsed.
  PerformMouseWheelOnTabStrip(kWheelUp);
  EXPECT_EQ(1, model->active_index());

  // Scrolling to the next tab from index 1 should skip to index 3, since index
  // 2 in between them is collapsed.
  PerformMouseWheelOnTabStrip(kWheelDown);
  EXPECT_EQ(3, model->active_index());

  // Scrolling to the next tab from index 3 should do nothing, since the only
  // next tab is collapsed.
  PerformMouseWheelOnTabStrip(kWheelDown);
  EXPECT_EQ(3, model->active_index());
}

#endif  // #if !BUILDFLAG(IS_CHROMEOS_LACROS)