// Copyright 2026 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/extensions/extension_browsertest.h"
#include "chrome/browser/ui/browser_window/public/browser_window_features.h"
#include "chrome/browser/ui/browser_window/public/browser_window_interface.h"
#include "chrome/browser/ui/side_panel/side_panel_entry.h"
#include "chrome/browser/ui/side_panel/side_panel_ui.h"
#include "chrome/browser/ui/tabs/public/tab_features.h"
#include "chrome/browser/ui/tabs/tab_model.h"
#include "chrome/browser/ui/views/side_panel/extensions/extension_side_panel_coordinator.h"
#include "chrome/browser/ui/views/side_panel/extensions/extension_side_panel_manager.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "extensions/test/extension_test_message_listener.h"
#include "extensions/test/test_extension_dir.h"
namespace extensions {
class ExtensionSidePanelInteractiveTest : public ExtensionBrowserTest {
protected:
SidePanelEntry::Key GetKey(const ExtensionId& id) {
return SidePanelEntry::Key(SidePanelEntry::Id::kExtension, id);
}
SidePanelUI* GetSidePanelUI() {
return browser()->GetFeatures().side_panel_ui();
}
ExtensionSidePanelCoordinator* GetCoordinator(
const ExtensionId& extension_id,
content::WebContents* web_contents) {
auto* manager =
web_contents ? tabs::TabInterface::GetFromContents(web_contents)
->GetTabFeatures()
->extension_side_panel_manager()
: browser()->GetFeatures().extension_side_panel_manager();
return manager->GetExtensionCoordinatorForTesting(extension_id);
}
};
// Test that the extension's side panel web contents is focused when shown.
IN_PROC_BROWSER_TEST_F(ExtensionSidePanelInteractiveTest,
SidePanelWebContentsFocusedOnShow) {
TestExtensionDir dir;
dir.WriteManifest(R"({
"name": "Autofocus Test",
"version": "1.0",
"manifest_version": 3,
"permissions": ["sidePanel"],
"side_panel": {
"default_path": "panel.html"
}
})");
dir.WriteFile(FILE_PATH_LITERAL("panel.html"), R"(
)");
dir.WriteFile(FILE_PATH_LITERAL("panel.js"), R"(
const input = document.getElementById("autofocus-input");
if (document.activeElement === input) {
chrome.test.sendMessage("ready");
} else {
input.addEventListener("focus", () => chrome.test.sendMessage("ready"), { once: true });
}
)");
ExtensionTestMessageListener ready_listener("ready");
const Extension* extension = LoadExtension(dir.UnpackedPath());
ASSERT_TRUE(extension);
SidePanelEntry::Key extension_key = GetKey(extension->id());
SidePanelUI* const side_panel_ui = GetSidePanelUI();
side_panel_ui->Show(extension_key, std::nullopt,
/*suppress_animations=*/true);
ASSERT_TRUE(ready_listener.WaitUntilSatisfied());
ExtensionSidePanelCoordinator* coordinator =
GetCoordinator(extension->id(), /*web_contents=*/nullptr);
ASSERT_TRUE(coordinator);
content::WebContents* side_panel_contents =
coordinator->GetHostWebContentsForTesting();
ASSERT_TRUE(side_panel_contents);
// Verifying that the document.activeElement within the side panel's
// WebContents is indeed the input element.
EXPECT_EQ("autofocus-input",
content::EvalJs(side_panel_contents, "document.activeElement.id"));
}
} // namespace extensions