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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/frame/multi_contents_view.h"
#include "base/check_deref.h"
#include "base/notreached.h"
#include "base/test/scoped_feature_list.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/ui_features.h"
#include "chrome/browser/ui/views/frame/multi_contents_drop_target_view.h"
#include "chrome/browser/ui/views/test/split_tabs_interactive_test_mixin.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/base/dragdrop/os_exchange_data_provider.h"
#include "ui/base/interaction/element_tracker.h"
#include "ui/compositor/layer_tree_owner.h"
#include "ui/views/interaction/element_tracker_views.h"
#include "ui/views/view_utils.h"
#include "url/gurl.h"
#include "url/url_constants.h"
class MultiContentsViewBrowserTest : public InProcessBrowserTest {
protected:
MultiContentsViewBrowserTest() {
feature_list_.InitAndEnableFeature(features::kSideBySide);
}
MultiContentsDropTargetView& drop_target_view() {
MultiContentsDropTargetView* view =
views::ElementTrackerViews::GetInstance()
->GetFirstMatchingViewAs<MultiContentsDropTargetView>(
MultiContentsDropTargetView::kMultiContentsDropTargetElementId,
views::ElementTrackerViews::GetContextForWidget(
multi_contents_view().GetWidget()));
CHECK(view);
return *view;
}
MultiContentsView& multi_contents_view() {
return CHECK_DEREF(BrowserView::GetBrowserViewForBrowser(browser())
->multi_contents_view());
}
private:
base::test::ScopedFeatureList feature_list_;
};
IN_PROC_BROWSER_TEST_F(MultiContentsViewBrowserTest,
HandleDropTargetViewLinkDrop_EndDropTarget) {
ui::OSExchangeData data;
const GURL kDropUrl("http://www.chromium.org/");
data.SetURL(kDropUrl, u"Chromium");
gfx::PointF point = {10, 10};
ui::DropTargetEvent event(data, point, point, ui::DragDropTypes::DRAG_LINK);
drop_target_view().Show(MultiContentsDropTargetView::DropSide::END);
auto drop_cb = drop_target_view().GetDropCallback(event);
EXPECT_FALSE(multi_contents_view().IsInSplitView());
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_TRUE(multi_contents_view().IsInSplitView());
// After the drop, a new tab should be created in the split view.
// The original tab is at index 0, the new tab from the drop is at index 1.
ASSERT_EQ(2, browser()->tab_strip_model()->count());
EXPECT_EQ(GURL(url::kAboutBlankURL),
browser()->tab_strip_model()->GetWebContentsAt(0)->GetURL());
EXPECT_EQ(kDropUrl,
browser()->tab_strip_model()->GetWebContentsAt(1)->GetURL());
}
IN_PROC_BROWSER_TEST_F(MultiContentsViewBrowserTest,
HandleDropTargetViewLinkDrop_StartDropTarget) {
ui::OSExchangeData data;
const GURL kDropUrl("http://www.chromium.org/");
data.SetURL(kDropUrl, u"Chromium");
gfx::PointF point = {10, 10};
ui::DropTargetEvent event(data, point, point, ui::DragDropTypes::DRAG_LINK);
drop_target_view().Show(MultiContentsDropTargetView::DropSide::START);
auto drop_cb = drop_target_view().GetDropCallback(event);
EXPECT_FALSE(multi_contents_view().IsInSplitView());
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_TRUE(multi_contents_view().IsInSplitView());
// After the drop, a new tab should be created in the split view.
// The original tab is at index 0, the new tab from the drop is at index 1.
ASSERT_EQ(2, browser()->tab_strip_model()->count());
EXPECT_EQ(kDropUrl,
browser()->tab_strip_model()->GetWebContentsAt(0)->GetURL());
EXPECT_EQ(GURL(url::kAboutBlankURL),
browser()->tab_strip_model()->GetWebContentsAt(1)->GetURL());
}
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