html_form_input.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_HPP
#define HTML_FORM_INPUT_HPP
 
    // C system header files
#include "my_config.h"
extern "C"
{
 
}
 
    // C++ system header files
#include <vector>
 
    // webdar headers
#include "body_builder.hpp"
#include "events.hpp"
#include "jsoner.hpp"
#include "html_text.hpp"
#include "html_label.hpp"
 
 
 
class html_form_input : public body_builder,
            public events,
            public jsoner
{
public:
    static const std::string changed;
 
    enum input_type { text, password, number, range, check, file };
 
    html_form_input(const std::string & label,           
            input_type type,                     
            const std::string & initial_value,   
            const std::string & size,            
            const std::string & css_class        
    );
    html_form_input(const html_form_input & ref) = default;
    html_form_input(html_form_input && ref) noexcept = delete;
    html_form_input & operator = (const html_form_input & ref) = default;
    html_form_input & operator = (html_form_input && ref) noexcept = delete;
    ~html_form_input() = default;
 
    void set_range(const libdar::infinint & min, const libdar::infinint & max);
    void set_min_only(const libdar::infinint & min);
    void set_max_only(const libdar::infinint & max);
    void change_label(const std::string & label);
    void change_type(input_type type);
 
    void set_value(const std::string & val);
    void set_value_as_bool(bool val);
    void set_value_as_int(int val);
    const std::string & get_value() const { return x_init; };
    bool get_value_as_bool() const { return !x_init.empty(); }; //< for checkbox empty string means unchecked, anything else checked
    int get_value_as_int() const;
 
    void set_enabled(bool val);
 
 
    void box_set_css_class(const std::string & val) { if(box_css != val) my_body_part_has_changed(); box_css = val; };
 
    const std::string & box_get_css_class() const { return box_css; };
 
 
    void set_change_event_name(const std::string & name);
 
    std::string get_event_name() const { return modif_change.empty()? changed: modif_change; };
 
    virtual void load_json(const json & source) override;
 
    virtual json save_json() const override;
 
    virtual void clear_json() override;
 
    void set_tooltip(const std::string & msg) { hlabel.set_tooltip(msg); };
 
protected:
    virtual std::string inherited_get_body_part(const chemin & path,
                        const request & req) override;
 
    virtual void new_css_library_available() override;
 
 
private:
    bool enabled;        
    std::string x_type;  
    std::string x_init;  
    std::string x_size;  
    std::string x_min;   
    std::string x_max;   
    bool value_set;      
    std::string box_css; 
    std::string modif_change; 
 
    void my_act() { act(modif_change.empty() ? changed: modif_change); };
    void check_min_max_change(const std::string & next_min, const std::string & next_max);
    std::string generate_input(const std::string & csscl, const std::string & id);
 
    html_text new_line;
    html_label hlabel;
 
    static std::string string_for_type(input_type type);
 
    static constexpr const unsigned int format_version = 1;
    static constexpr const char* myclass_id = "html_form_input";
 
    static constexpr const char* jlabel_init = "value";
 
    static const std::string css_label;
    static const std::string css_input;
    static const std::string css_check;
    static const std::string css_checktitle;
    static const std::string css_vertical_space;
    static const std::string css_display_no_CR;
};
 
#endif