CourseWork/Menu.cpp at main · AndreyPerunov/CourseWork · GitHub

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#include "Menu.h"

Menu::Menu(std::string data) {
    Menu::data = data;
}

Menu::Menu(std::string data, Menu* parent) {
    Menu::data = data;
    Menu::parent = parent;
}


Menu* Menu::addChild(std::string data) {
    Menu* child = new Menu(data, this);
    Menu::children.push_back(child);
    return child;
}

void Menu::addGoBack(std::string data) {
    Menu* child = new Menu(data, this);
    child->goBack = true;
    Menu::children.push_back(child);
}

std::string Menu::navigate() {
    size_t selectedOption = 0;
    char key;
    Menu* currentMenu = this;
    std::string path = currentMenu->data;
    while (true) {
        // If edge - return
        if (currentMenu->children.empty()) {
            return path;
        }

        system("cls");
        std::cout << colored(path, "yellow") << '\n';
        currentMenu->displayChildren(selectedOption);

        key = _getch();
        // Arrow down key
        if (key == 80) {
            if (selectedOption >= currentMenu->children.size() - 1) {
                selectedOption = 0;
            }
            else {
                selectedOption++;
            }
        }
        // Arrow up key
        if (key == 72) {
            if (selectedOption <= 0) {
                selectedOption = currentMenu->children.size() - 1;
            }
            else {
                selectedOption--;
            }
        }

        // Enter key
        if (key == '\r') {
            // Go back
            if (currentMenu->children[selectedOption]->goBack) {
                currentMenu = currentMenu->parent;
                std::size_t pos = path.find_last_of('/');
                path.erase(pos);
            }
            // Go deeper
            else {
                currentMenu = currentMenu->children[selectedOption];
                path += '/' + currentMenu->data;
            }
            selectedOption = 0;
        }
    }
}

std::string Menu::navigate(std::string &flashMessage) {
    size_t selectedOption = 0;
    char key;
    Menu* currentMenu = this;
    std::string path = currentMenu->data;
    while (true) {
        // If edge - return
        if (currentMenu->children.empty()) {
            return path;
        }

        system("cls");
        std::cout << colored(path, "yellow") << '\n';
        currentMenu->displayChildren(selectedOption);
        std::cout << '\n' << flashMessage << '\n';
        flashMessage = "";

        key = _getch();
        // Arrow down key
        if (key == 80) {
            if (selectedOption >= currentMenu->children.size() - 1) {
                selectedOption = 0;
            }
            else {
                selectedOption++;
            }
        }
        // Arrow up key
        if (key == 72) {
            if (selectedOption <= 0) {
                selectedOption = currentMenu->children.size() - 1;
            }
            else {
                selectedOption--;
            }
        }

        // Enter key
        if (key == '\r') {
            // Go back
            if (currentMenu->children[selectedOption]->goBack) {
                currentMenu = currentMenu->parent;
                std::size_t pos = path.find_last_of('/');
                path.erase(pos);
            }
            // Go deeper
            else {
                currentMenu = currentMenu->children[selectedOption];
                path += '/' + currentMenu->data;
            }
            selectedOption = 0;
        }
    }
}

void Menu::displayChildren(size_t selectedOption) {
    for (size_t i = 0; i < Menu::children.size(); ++i) {
        if (selectedOption == i) {
            std::cout << colored('>'+Menu::children[i]->data, "green") << '\n';
        } else {
            std::cout << ' ' << Menu::children[i]->data << '\n';
        }
    }
}