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// Copyright 2025 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/tabs/dragging/dragging_tabs_session.h"
#include "chrome/browser/ui/browser_tabstrip.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/views/tabs/dragging/drag_session_data.h"
#include "chrome/browser/ui/views/tabs/tab_strip.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "components/tabs/public/tab_interface.h"
#include "content/public/test/browser_test.h"
#include "ui/base/models/list_selection_model.h"
#include "ui/gfx/geometry/vector2d.h"
#include "ui/views/view.h"
class DraggingTabsSessionBrowserTest : public InProcessBrowserTest {
public:
DraggingTabsSessionBrowserTest() = default;
~DraggingTabsSessionBrowserTest() override = default;
void SetUpOnMainThread() override {
model_ = browser()->GetTabStripModel();
view_ = browser()->GetBrowserView().tabstrip();
}
void TearDownOnMainThread() override {
view_->GetDragContext()->StoppedDragging();
model_ = nullptr;
view_ = nullptr;
}
protected:
std::tuple<tabs::TabInterface*, Tab*> AddTab(int index, bool foreground) {
chrome::AddTabAt(browser(), GURL("about:blank"), index, foreground);
view_->StopAnimating(true);
return std::make_tuple(model_->GetTabAtIndex(index), view_->tab_at(index));
}
// Sets up model and view state, and populates a DragSessionData, to drag the
// tabs at `tab_indices`. The tab at `tab_indices[source_index]` is the
// source view for the drag session. Mirrors TabDragController::AttachImpl().
// TODO(382754501): Extend this to work with header drags.
DragSessionData StartDragging(std::vector<int> tab_indices,
int source_index) {
ui::ListSelectionModel selection;
selection.SetSelectedIndex(tab_indices[source_index]);
for (int tab_index : tab_indices) {
selection.AddIndexToSelection(tab_index);
}
model_->SetSelectionFromModel(selection);
DragSessionData drag_data;
for (int tab_index : tab_indices) {
Tab* const tab_view = view_->tab_at(tab_index);
drag_data.tab_drag_data_.emplace_back(view_->GetDragContext(), tab_view);
drag_data.tab_drag_data_.back().attached_view = tab_view;
}
drag_data.source_view_index_ = source_index;
view_->GetDragContext()->StartedDragging(drag_data.attached_views());
return drag_data;
}
raw_ptr<TabStripModel> model_;
raw_ptr<TabStrip> view_;
};
// Flaky. http://crbug.com/417465013
#if BUILDFLAG(IS_WIN)
#define MAYBE_BasicTest DISABLED_BasicTest
#else
#define MAYBE_BasicTest BasicTest
#endif
IN_PROC_BROWSER_TEST_F(DraggingTabsSessionBrowserTest, MAYBE_BasicTest) {
// Open two tabs.
auto [tab_0, tab_0_view] = AddTab(0, true);
auto [tab_1, tab_1_view] = AddTab(1, false);
// Set up drag session.
DragSessionData drag_data = StartDragging({0}, 0);
const gfx::Point start_point = tab_0_view->GetBoundsInScreen().CenterPoint();
DraggingTabsSession session(drag_data, view_->GetDragContext(), 0.5, true,
start_point);
// Swap them.
const gfx::Point target_point =
tab_1_view->GetBoundsInScreen().CenterPoint() + gfx::Vector2d(10, 0);
session.MoveAttached(target_point);
// They should have been swapped in the model.
EXPECT_EQ(tab_0, model_->GetTabAtIndex(1));
EXPECT_EQ(tab_1, model_->GetTabAtIndex(0));
// The dragged tab should be positioned with its center point under the
// cursor.
EXPECT_EQ(tab_0_view->GetBoundsInScreen().CenterPoint(), target_point);
}
// TODO(crbug.com/382754501): Add more tests, and delete tests that are made
// redundant in tab_drag_controller_interactive_uitest.cc.
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