html_form_input_unit.hpp

/*********************************************************************/
// webdar - a web server and interface program to libdar
// Copyright (C) 2013-2025 Denis Corbin
//
// This file is part of Webdar
//
//  Webdar 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.
//
//  Webdar 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 Webdar.  If not, see <http://www.gnu.org/licenses/>
//
//----
//  to contact the author: dar.linux@free.fr
/*********************************************************************/
 
#ifndef HTML_FORM_INPUT_UNIT_HPP
#define HTML_FORM_INPUT_UNIT_HPP
 
    // C system header files
#include "my_config.h"
extern "C"
{
 
}
 
    // C++ system header files
#include <dar/libdar.hpp>
 
    // webdar headers
#include "html_form_input.hpp"
#include "html_size_unit.hpp"
#include "events.hpp"
#include "actor.hpp"
#include "html_div.hpp"
 
 
 
class html_form_input_unit : public html_div, public events, public actor
{
public:
    // default event name used to signal component change
    static const std::string changed;
 
    html_form_input_unit(const std::string & label,
             const libdar::infinint & initial_value,
             const std::string & size);
    html_form_input_unit(const html_form_input_unit & ref) = delete;
    html_form_input_unit(html_form_input_unit && ref) noexcept = delete;
    html_form_input_unit & operator = (const html_form_input_unit & ref) = delete;
    html_form_input_unit & operator = (html_form_input_unit && ref) noexcept = delete;
    ~html_form_input_unit() = default;
 
 
    void set_range(const libdar::infinint & x_min, const libdar::infinint & x_max);
 
    void set_min_only(const libdar::infinint & x_min);
 
 
    void set_max_only(const libdar::infinint & x_max);
 
    void box_set_css_class(const std::string & val) { field.box_set_css_class(val); };
 
    void change_label(const std::string & label) { field.change_label(label); };
 
    void set_value_as_infinint(const libdar::infinint & x_val);
    libdar::infinint get_value_as_infinint() const { return val; };
 
    const std::string & get_raw_value() const { return field.get_value(); };
 
    const std::string get_unit_string() const { return unit_box.get_string(); };
 
    void set_enabled(bool val) { field.set_enabled(val); unit_box.set_enabled(val); };
 
 
    void set_change_event_name(const std::string & name);
 
    std::string get_event_name() const { return modif_change.empty()? changed: modif_change; };
 
    virtual void on_event(const std::string & event_name) override;
 
    void set_tooltip(const std::string & val) { field.set_tooltip(val); };
 
protected:
 
    virtual void new_css_library_available() override;
 
private:
    bool ignore_events;  
    bool no_act;         
    html_form_input field;
    html_size_unit unit_box;
    libdar::infinint val; 
    libdar::infinint min; 
    libdar::infinint max; 
 
    std::string modif_change; 
 
    void my_act() { if(!no_act) act(modif_change.empty() ? changed: modif_change); };
    void reduce_val_and_unit();
    void set_field_val();
    void set_value_to_largest_unit();
    void check_min_max_compliance();
 
 
    static libdar::infinint reduce_to_unit(const libdar::infinint & val, const libdar::infinint & unit);
 
    static libdar::infinint reduce_to_unit_above(const libdar::infinint & val, const libdar::infinint & unit);
 
    static const std::string css_input;
    static const std::string css_unit;
 
 
};
 
#endif