Keys/src/App/UI/MainWindow/MainWindow.cs

using Adw;
using Keychain.ViewModels;
using Logic;

namespace Keychain.UI;

public partial class MainWindow
{
    public Window Window { get; private set; }
    private PasswordList passwordCollection;
    private PreferencesGroup passwordList;
    private Gtk.ToggleButton searchToggleButton;
    private Gtk.Stack titleStack;
    private Gtk.SearchEntry searchEntry;

    private const string windowId = "main_window";
    private const string searchToggleButtonId = "search_button";
    private const string titleStackId = "title_stack";
    private const string searchEntryId = "search_entry";
    private const string passwordListId = "password_list";

    public MainWindow(IPasswordStoreService passwordStoreService)
    {
        this.passwordStoreService = passwordStoreService;

        BindUIElements();

        // Initialize the observable collection with property binding  
        shortcuts = new PasswordStoreShortcutCollection(shortcutsGroup, passwordStoreService);
        if (shortcuts.Count == 0)
        {
            LoadDefaultShortcuts();
        }

        passwordCollection = new PasswordList(passwordList);
    }

    private void SetSearchBarVisible(object sender, EventArgs e)
    {
        if (searchToggleButton.Active)
        {
            titleStack.SetVisibleChildName("Search");
            searchEntry.GrabFocus();
        }
        else
        {
            titleStack.SetVisibleChildName("Passwords");
        }
    }

    private void BindUIElements()
    { 
        var builder = new Gtk.Builder("Keychain.UI.MainWindow.MainWindow.xml");
        Window = builder.GetObject(windowId) as Window;
        if (Window == null)
        {
            throw new Exception("Failed to load embedded resource MainWindow.xml");
        }

        try
        {
            shortcutsGroup = builder.GetObject(shortcutsGroupId) as PreferencesGroup;
            if (shortcutsGroup == null)
            {
                throw new Exception(shortcutsGroupId);
            }

            var addButton = builder.GetObject(addShortcutButtonId) as Gtk.Button;
            if (addButton == null)
            {
                throw new Exception(addShortcutButtonId);
            }
            addButton.OnClicked += OnAddShortcutClicked;

            searchToggleButton = builder.GetObject(searchToggleButtonId) as Gtk.ToggleButton;
            if (searchToggleButton == null)
            {
                throw new Exception(searchToggleButtonId);
            }
            searchToggleButton.OnToggled += SetSearchBarVisible;


            titleStack = builder.GetObject(titleStackId) as Gtk.Stack;
            if (titleStack == null)
            {
                throw new Exception(titleStackId);
            }

            searchEntry = builder.GetObject(searchEntryId) as Gtk.SearchEntry;
            if (searchEntry == null)
            {
                throw new Exception(searchEntryId);
            }
            var focusController = new Gtk.EventControllerFocus();
            focusController.OnLeave += (s, e) =>
            {
                searchToggleButton.Active = false;
            };
            searchEntry.AddController(focusController);

            passwordList = builder.GetObject(passwordListId) as PreferencesGroup;
            if (passwordList == null)
            {
                throw new Exception(passwordListId);
            }
        }
        catch (Exception e)
        {
            throw new Exception("Failed to load UI element with ID: " + e.Message);
        }
    }
}