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// Copyright 2024 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_GLIC_BROWSER_UI_GLIC_TAB_INDICATOR_HELPER_H_
#define CHROME_BROWSER_GLIC_BROWSER_UI_GLIC_TAB_INDICATOR_HELPER_H_
#include "base/callback_list.h"
#include "base/memory/raw_ref.h"
#include "chrome/browser/glic/host/context/glic_tab_data.h"
#include "components/tabs/public/tab_interface.h"
namespace glic {
// This class is partially responsible for updating tab indicators for glic
// focus. TODO(crbug.com/393557651): Simplify TabRendererData design, at which
// point this class can be fully responsible.
//
// Tab UI reflects feature state (such as the glic focused tab), but is stored
// on a per-index basis rather than a per-tab basis. This means that the UI
// needs to be updated either when the feature state changes, OR when the tab is
// moved around (either in the same tabstrip, or into a new tabstrip). The
// latter is currently handled by
// BrowserTabStripController::OnTabStripModelChanged. This class is only
// responsible for propagating glic focus changes for a fixed TabInterface,
// without handling moving.
class GlicTabIndicatorHelper {
public:
explicit GlicTabIndicatorHelper(tabs::TabInterface* tab);
~GlicTabIndicatorHelper();
private:
// Updates the Tab UI. This only needs to be called when the tab gains/loses
// focus, or when the indicator status changes.
void UpdateTab();
// Called when the focused tab changes with the focused tab data object.
void OnFocusedTabChanged(FocusedTabData focused_tab_data);
// Called when the client changes the context access indicator status.
void OnIndicatorStatusChanged(bool enabled);
// Called when the tab is detached.
void OnTabWillDetach(tabs::TabInterface* tab,
tabs::TabInterface::DetachReason reason);
// Called when the tab is inserted.
void OnTabDidInsert(tabs::TabInterface* tab);
raw_ptr<tabs::TabInterface> tab_;
bool tab_is_focused_ = false;
bool is_detached_ = false;
base::CallbackListSubscription focus_change_subscription_;
base::CallbackListSubscription indicator_change_subscription_;
base::CallbackListSubscription will_detach_subscription_;
base::CallbackListSubscription did_insert_subscription_;
};
} // namespace glic
#endif // CHROME_BROWSER_GLIC_BROWSER_UI_GLIC_TAB_INDICATOR_HELPER_H_
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