PaginationWidget.hpp

/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * Copyright (C) 2025 Marco Craveiro <marco.craveiro@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 3 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */
#ifndef ORES_QT_PAGINATION_WIDGET_HPP
#define ORES_QT_PAGINATION_WIDGET_HPP
 
#include <QWidget>
#include <QLabel>
#include <QAction>
#include <QToolBar>
#include <QComboBox>
#include <QHBoxLayout>
#include "ores.logging/make_logger.hpp"
#include "ores.qt/export.hpp"
 
namespace ores::qt {
 
class ORES_QT_API PaginationWidget : public QWidget {
    Q_OBJECT
 
private:
    inline static std::string_view logger_name =
        "ores.qt.pagination_widget";
 
    [[nodiscard]] static auto& lg() {
        using namespace ores::logging;
        static auto instance = make_logger(logger_name);
        return instance;
    }
 
public:
    explicit PaginationWidget(QWidget* parent = nullptr);
 
    void update_state(std::uint32_t loaded_count, std::uint32_t total_count);
 
    std::uint32_t page_size() const;
 
    void set_load_all_enabled(bool enabled);
 
    [[nodiscard]] std::uint32_t current_page() const { return current_page_; }
 
    [[nodiscard]] std::uint32_t total_pages() const;
 
    [[nodiscard]] std::uint32_t current_offset() const;
 
signals:
    void page_size_changed(std::uint32_t page_size);
 
    void load_all_requested();
 
    void page_requested(std::uint32_t offset, std::uint32_t limit);
 
private slots:
    void on_page_size_changed(int index);
    void on_load_all_clicked();
    void on_first_clicked();
    void on_prev_clicked();
    void on_next_clicked();
    void on_last_clicked();
 
private:
    QLabel* info_label_;
    QComboBox* page_size_combo_;
    QAction* first_action_;
    QAction* prev_action_;
    QAction* next_action_;
    QAction* last_action_;
    QAction* load_all_action_;
    QToolBar* nav_toolbar_;
    QHBoxLayout* layout_;
 
    std::uint32_t loaded_count_{0};
    std::uint32_t total_count_{0};
    std::uint32_t current_page_{0};
 
    void update_button_states();
};
 
}
 
#endif