form.h

//
// form.h - form interface
//
// lecui user interface library, part of the liblec library
// Copyright (c) 2019 Alec Musasa (alecmus at live dot com)
//
// Released under the MIT license. For full details see the
// file LICENSE.txt
//
 
#pragma once
 
#if defined(LECUI_EXPORTS)
#include "lecui.h"
#else
#include <liblec/lecui.h>
#endif
 
#include <functional>
 
namespace liblec {
    namespace lecui {
#if defined(LECUI_EXPORTS)
        class page_manager;
        class widget_manager;
        class timer_manager;
        class dimensions;
        class appearance;
        class controls;
        class filesystem;
        class color_picker;
        class splash;
        class instance_manager;
        class form_menu;
        class tray_icon;
 
        namespace containers {
            class page;
            class status_pane_builder;
            class tab_pane_builder;
            class tab_builder;
            class pane_builder;
            class group_builder;
        }
 
        namespace widgets {
            class label_builder;
            class image_view_builder;
            class button_builder;
            class custom_builder;
            class table_view_builder;
            class rectangle_builder;
            class toggle_builder;
            class progress_indicator_builder;
            class progress_bar_builder;
            class checkbox_builder;
            class text_field_builder;
            class password_field_builder;
            class tree_view_builder;
            class slider_builder;
            class html_editor_builder;
            class combobox_builder;
            class line_builder;
            class time_builder;
            class date_builder;
            class icon_builder;
            class strength_bar_builder;
 
            class widget_impl;
            class combobox_impl;
            class html_editor_impl;
            class text_field_impl;
            class tree_view_impl;
            class image_view_impl;
            class table_view_impl;
            class time_impl;
            class date_impl;
            class icon_impl;
            class pane_impl;
            class tab_pane_impl;
        }
#endif
 
        enum class form_position {
            center_to_working_area,
 
            center_to_parent,
 
            top_left,
 
            top_left_offset,
 
            bottom_left,
 
            bottom_left_offset,
 
            top_right,
 
            top_right_offset,
 
            bottom_right,
 
            bottom_right_offset,
        };
 
        class lecui_api form {
        public:
            struct form_events {
                std::function<void(const lecui::size&)> size = nullptr;
 
                std::function<void(const std::string&)> drop_files = nullptr;
 
                std::function<void(const std::string&)> receive_data = nullptr;
 
                std::function<void()> caption;
 
                std::function<bool(std::string&)> initialize;
 
                std::function<bool(std::string&)> layout;
 
                std::function<void()> start;
 
                std::function<void()> close;
 
                std::function<void()> shutdown;
            };
 
            form(const std::string& caption);
 
            form(const std::string& caption, form& parent);
            ~form();
 
            [[nodiscard]]
            static std::string menu_form_caption();
 
            [[nodiscard]]
            static std::string tooltip_form_caption();
 
            void move(const point& point);
 
            void move(const form_position& form_position);
 
            void force_instance();
 
            [[nodiscard]] bool create(std::string& error);
 
            void close();
 
            [[nodiscard]] bool prompt(const std::string& question);
 
            void message(const std::string& message);
 
            void update();
 
            void reload();
 
            [[nodiscard]]
            static bool keep_alive();
 
            [[nodiscard]]
            float get_dpi_scale();
 
            void allow_minimize();
 
            void restore();
 
            void maximize();
 
            void hide();
 
            bool visible();
 
            void show();
 
            bool minimized();
 
            void prevent_quit();
 
            void allow_quit();
 
            form_events& events();
 
        private:
            class impl;
            impl& _d;
 
            // Default constructor and copying an object of this class are not allowed
            form() = delete;
            form(const form&) = delete;
            form& operator=(const form&) = delete;
 
#if defined(LECUI_EXPORTS)
            friend class page_manager;
            friend class widget_manager;
            friend class timer_manager;
            friend class dimensions;
            friend class appearance;
            friend class controls;
            friend class filesystem;
            friend class color_picker;
            friend class splash;
            friend class instance_manager;
            friend class form_menu;
            friend class tray_icon;
 
            friend class containers::page;
            friend class containers::status_pane_builder;
            friend class containers::tab_pane_builder;
            friend class containers::tab_builder;
            friend class containers::pane_builder;
            friend class containers::group_builder;
            friend class widgets::label_builder;
            friend class widgets::image_view_builder;
            friend class widgets::button_builder;
            friend class widgets::custom_builder;
            friend class widgets::table_view_builder;
            friend class widgets::rectangle_builder;
            friend class widgets::toggle_builder;
            friend class widgets::progress_indicator_builder;
            friend class widgets::progress_bar_builder;
            friend class widgets::checkbox_builder;
            friend class widgets::text_field_builder;
            friend class widgets::tree_view_builder;
            friend class widgets::slider_builder;
            friend class widgets::html_editor_builder;
            friend class widgets::combobox_builder;
            friend class widgets::line_builder;
            friend class widgets::time_builder;
            friend class widgets::date_builder;
            friend class widgets::icon_builder;
            friend class widgets::strength_bar_builder;
 
            friend class widgets::widget_impl;
            friend class widgets::combobox_impl;
            friend class widgets::image_view_impl;
            friend class widgets::tree_view_impl;
            friend class widgets::time_impl;
            friend class widgets::date_impl;
            friend class widgets::html_editor_impl;
            friend class widgets::icon_impl;
#endif
        };
    }
}