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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_SEARCH_ENGINE_CHOICE_SEARCH_ENGINE_CHOICE_TAB_HELPER_H_
#define CHROME_BROWSER_UI_SEARCH_ENGINE_CHOICE_SEARCH_ENGINE_CHOICE_TAB_HELPER_H_
#include <optional>
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
#include "ui/gfx/geometry/size.h"
namespace content {
class WebContents;
}
class Browser;
// Helper class which watches `web_contents` to determine whether there is an
// appropriate opportunity to show the SearchEngineChoiceDialogView.
class SearchEngineChoiceTabHelper
: public content::WebContentsObserver,
public content::WebContentsUserData<SearchEngineChoiceTabHelper> {
public:
SearchEngineChoiceTabHelper(const SearchEngineChoiceTabHelper&) = delete;
SearchEngineChoiceTabHelper& operator=(const SearchEngineChoiceTabHelper&) =
delete;
~SearchEngineChoiceTabHelper() override;
// Static method that tells us if the helper is needed. This is to be
// checked before creating the helper so we don't unnecessarily create one
// for every `WebContents`.
// TODO(crbug.com/347223092): Improve this approximative check, that
// currently only depends on feature flags.
static bool IsHelperNeeded();
private:
friend class content::WebContentsUserData<SearchEngineChoiceTabHelper>;
explicit SearchEngineChoiceTabHelper(content::WebContents* web_contents);
// content::WebContentsObserver:
void DidFinishNavigation(
content::NavigationHandle* navigation_handle) override;
void OnVisibilityChanged(content::Visibility visibility) override;
// Shows the dialog if the user is eligible and if the tab is in compatible
// state (e.g. visible, loaded, suitable URL).
void MaybeShowDialog();
WEB_CONTENTS_USER_DATA_KEY_DECL();
};
// Implemented in
// `chrome/browser/ui/views/search_engine_choice/search_engine_choice_dialog_view.cc`
// because there isn't a dependency between `chrome/browser/ui/` and
// `chrome/browser/ui/views/`.
class SearchEngineChoiceDialog {
public:
// `boundary_dimensions_for_test` can be set to specify an upper bound for
// dialog's width and height. Leaving it empty will make the dialog use the
// window size as upper bound.
// `zoom_factor_for_test` can be set to specify the zoom factor needed. This
// is used to be able to display the full content of the dialog in screenshot
// tests. Leaving it empty will make the dialog use a zoom of 1.;
static void Show(
Browser& browser,
std::optional<gfx::Size> boundary_dimensions_for_test = std::nullopt,
std::optional<double> zoom_factor_for_test_ = std::nullopt);
};
// Implemented in
// `chrome/browser/ui/views/search_engine_choice/search_engine_choice_dialog_view.cc`
// because there isn't a dependency between `chrome/browser/ui/` and
// `chrome/browser/ui/views/`.
// Returns whether the smallest height variant of the search engine choice
// dialog can fit in the browser window or not.
bool CanWindowHeightFitSearchEngineChoiceDialog(Browser& browser);
#endif // CHROME_BROWSER_UI_SEARCH_ENGINE_CHOICE_SEARCH_ENGINE_CHOICE_TAB_HELPER_H_
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