html_dir_tree.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_DIR_TREE_HPP
#define HTML_DIR_TREE_HPP
 
    // C system header files
#include "my_config.h"
extern "C"
{
 
}
 
    // C++ system header files
#include <vector>
 
    // webdar headers
#include "html_div.hpp"
#include "events.hpp"
#include "chemin.hpp"
#include "archive_init_list.hpp"
#include "html_button.hpp"
#include "html_focus.hpp"
#include "html_table.hpp"
 
 
 
class html_dir_tree: public html_div, public actor
{
public:
    html_dir_tree(const std::string & chemin); // minimal constructeur, must use set_source() ASAP
    html_dir_tree(const archive_init_list * ref, const std::string & chemin);
    html_dir_tree(const html_dir_tree & ref) = delete;
    html_dir_tree(html_dir_tree && ref) noexcept = delete;
    html_dir_tree & operator = (const html_dir_tree & ref) = delete;
    html_dir_tree & operator = (html_dir_tree && ref) noexcept = delete;
    ~html_dir_tree() { clear(); };
 
    void clear();
 
    void set_source(const archive_init_list *ref);
 
    void set_drop_content(html_focus *ref) { focus_place = ref; };
 
    void set_drop_path(html_div *ref) { focus_title = ref; };
 
    void go_shrink();
 
    void go_expand();
 
    void go_show() { on_event(event_click); };
 
    virtual void on_event(const std::string & event_name) override;
 
protected:
 
    virtual std::string inherited_get_body_part(const chemin & path,
                        const request & req) override;
 
    // inherited from body_builder
    virtual void new_css_library_available() override;
 
 
private:
    static const std::string event_shrink;
    static const std::string event_expand;
    static const std::string event_click;
 
 
    chemin my_path;
    const archive_init_list *src;
    bool info_read;
    bool has_sub;
    bool visibility_has_changed; //< whether we need to rebuild the body_builder answer
    std::vector<html_dir_tree *> subdirs; //< subdirectories of the tree
 
    // HTML controls
    html_div line;      //< contains shrink/expand/nosubdir buttons + name for alignment
    html_button shrink; //< alternatively visible button
    html_button expand; //< alternatively visible button
    html_button nosubdir; //< "shown" when no subdir exist
    html_button name;   //< name of the directory
    html_div for_subdirs; //< where take place subdirs
    html_focus *focus_place; //< where to send contents upon focus
    html_table contents; //< directory contents
    html_div *focus_title; //< where to write title of the contents when are under focus
 
    void init(const std::string & chemin);
    void go_init_indent();
    void go_hide();
    void clear_contents();
};
 
#endif