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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.
#ifndef CHROME_BROWSER_UI_TABS_TAB_STRIP_MODEL_SELECTION_ADAPTER_H_
#define CHROME_BROWSER_UI_TABS_TAB_STRIP_MODEL_SELECTION_ADAPTER_H_
#include <optional>
#include "base/memory/raw_ptr.h"
#include "chrome/browser/ui/tabs/tab_strip_model_selection_state.h"
#include "ui/base/models/list_selection_model.h"
class TabStripModel;
namespace tabs {
class TabInterface;
class TabStripModelSelectionState;
} // namespace tabs
// An abstract base class that adapts different selection states to a common
// interface that can be used by TabStripModel.
class TabStripModelSelectionAdapter {
public:
virtual ~TabStripModelSelectionAdapter() = default;
virtual void set_anchor(std::optional<size_t> anchor) = 0;
virtual std::optional<size_t> anchor() const = 0;
virtual void set_active(std::optional<size_t> active) = 0;
virtual std::optional<size_t> active() const = 0;
virtual bool empty() const = 0;
virtual size_t size() const = 0;
virtual void IncrementFrom(size_t index) = 0;
virtual void DecrementFrom(size_t index,
tabs::TabInterface* tab_being_removed) = 0;
virtual void SetSelectedIndex(std::optional<size_t> index) = 0;
virtual bool IsSelected(size_t index) const = 0;
virtual void AddIndexToSelection(size_t index) = 0;
virtual void AddIndexRangeToSelection(size_t index_start,
size_t index_end) = 0;
virtual void RemoveIndexFromSelection(size_t index) = 0;
virtual void SetSelectionFromAnchorTo(size_t index) = 0;
virtual void AddSelectionFromAnchorTo(size_t index) = 0;
virtual void Move(size_t old_index, size_t new_index, size_t length) = 0;
virtual void Clear() = 0;
virtual ui::ListSelectionModel ToListSelectionModel() const = 0;
virtual ui::ListSelectionModel::SelectedIndices selected_indices() const = 0;
};
// An adapter that allows the TabStripModelSelectionState to be used like a
// ui::ListSelectionModel.
class TabStripModelSelectionStateAdapter final
: public TabStripModelSelectionAdapter {
public:
explicit TabStripModelSelectionStateAdapter(TabStripModel* model);
~TabStripModelSelectionStateAdapter() override;
// TabStripModelSelectionAdapter implementation
void set_anchor(std::optional<size_t> anchor) override;
std::optional<size_t> anchor() const override;
void set_active(std::optional<size_t> active) override;
std::optional<size_t> active() const override;
bool empty() const override;
size_t size() const override;
void IncrementFrom(size_t index) override;
void DecrementFrom(size_t index,
tabs::TabInterface* tab_being_removed) override;
void SetSelectedIndex(std::optional<size_t> index) override;
bool IsSelected(size_t index) const override;
void AddIndexToSelection(size_t index) override;
void AddIndexRangeToSelection(size_t index_start, size_t index_end) override;
void RemoveIndexFromSelection(size_t index) override;
void SetSelectionFromAnchorTo(size_t index) override;
void AddSelectionFromAnchorTo(size_t index) override;
void Move(size_t old_index, size_t new_index, size_t length) override;
void Clear() override;
ui::ListSelectionModel ToListSelectionModel() const override;
ui::ListSelectionModel::SelectedIndices selected_indices() const override;
private:
const raw_ptr<TabStripModel> tab_strip_model_;
tabs::TabStripModelSelectionState selection_state_;
};
// An adapter for a ui::ListSelectionModel.
class ListSelectionModelAdapter final : public TabStripModelSelectionAdapter {
public:
ListSelectionModelAdapter();
explicit ListSelectionModelAdapter(const ui::ListSelectionModel& model);
~ListSelectionModelAdapter() override;
// TabStripModelSelectionAdapter implementation
void set_anchor(std::optional<size_t> anchor) override;
std::optional<size_t> anchor() const override;
void set_active(std::optional<size_t> active) override;
std::optional<size_t> active() const override;
bool empty() const override;
size_t size() const override;
void IncrementFrom(size_t index) override;
void DecrementFrom(size_t index,
tabs::TabInterface* tab_being_removed) override;
void SetSelectedIndex(std::optional<size_t> index) override;
bool IsSelected(size_t index) const override;
void AddIndexToSelection(size_t index) override;
void AddIndexRangeToSelection(size_t index_start, size_t index_end) override;
void RemoveIndexFromSelection(size_t index) override;
void SetSelectionFromAnchorTo(size_t index) override;
void AddSelectionFromAnchorTo(size_t index) override;
void Move(size_t old_index, size_t new_index, size_t length) override;
void Clear() override;
ui::ListSelectionModel ToListSelectionModel() const override;
ui::ListSelectionModel::SelectedIndices selected_indices() const override;
private:
ui::ListSelectionModel model_;
};
#endif // CHROME_BROWSER_UI_TABS_TAB_STRIP_MODEL_SELECTION_ADAPTER_H_
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