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// Copyright 2017 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_TAB_UI_HELPER_H_
#define CHROME_BROWSER_UI_TAB_UI_HELPER_H_
#include <string>
#include <vector>
#include "base/callback_list.h"
#include "base/functional/callback_forward.h"
#include "chrome/browser/ui/tabs/contents_observing_tab_feature.h"
namespace tabs {
class TabInterface;
}
namespace ui {
class ImageModel;
} // namespace ui
namespace content {
class NavigationEntry;
class Page;
}
// TabUIHelper is used by UI code to obtain the title and favicon for a
// WebContents. The values returned by TabUIHelper differ from the WebContents
// when the WebContents hasn't loaded.
class TabUIHelper : public tabs::ContentsObservingTabFeature {
public:
explicit TabUIHelper(tabs::TabInterface& tab);
~TabUIHelper() override;
// Get the title of the tab. When the associated WebContents' title is empty,
// a customized title is used.
std::u16string GetTitle() const;
// Get the favicon of the tab. It will return a favicon from history service
// if it needs to, otherwise, it will return the favicon of the WebContents.
ui::ImageModel GetFavicon() const;
// Return true if the throbber should be hidden during a page load.
bool ShouldHideThrobber() const;
void SetWasActiveAtLeastOnce();
using TitleUpdatedCallbackList =
base::RepeatingCallbackList<void(std::u16string)>;
base::CallbackListSubscription AddTitleUpdatedCallback(
TitleUpdatedCallbackList::CallbackType callback);
// tabs::ContentsObservingTabFeature override:
void TitleWasSet(content::NavigationEntry* entry) override;
void DidStopLoading() override;
void OnVisibilityChanged(content::Visibility visiblity) override;
#if !BUILDFLAG(IS_ANDROID)
void PrimaryPageChanged(content::Page& page) override;
#endif
void set_created_by_session_restore(bool created_by_session_restore) {
created_by_session_restore_ = created_by_session_restore;
}
bool is_created_by_session_restore_for_testing() {
return created_by_session_restore_;
}
private:
bool was_active_at_least_once_ = false;
bool created_by_session_restore_ = false;
TitleUpdatedCallbackList title_change_callbacks_;
};
#endif // CHROME_BROWSER_UI_TAB_UI_HELPER_H_
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