Main-Repo/SourceCode/AIPractice/AIPractice.LabellerServer.WPF/SingleSelector.xaml.cs

using System;
using System.Collections;
using System.Windows;
using System.Windows.Controls;

namespace AIPractice.LabellerServer.WPF
{
    /// <summary>
    /// Interaction logic for SingleSelector.xaml
    /// </summary>
    public partial class SingleSelector : UserControl
    {
        private object _selectedItem;
        private bool _isEditable;
        public event EventHandler Refreshed;
        public event EventHandler SelectionChanged;

        public bool IsEditable
        {
            get => _isEditable;
            set
            {
                if (_isEditable != value)
                {
                    _isEditable = value;
                    if (_isEditable)
                    {
                        SingleSelectorButton.Visibility = Visibility.Collapsed;
                        SingleSelectorTextBox.Visibility = Visibility.Visible;
                    }
                    else
                    {
                        SingleSelectorButton.Visibility = Visibility.Visible;
                        SingleSelectorTextBox.Visibility = Visibility.Collapsed;
                    }
                }
            }
        }

        public object SelectedItem
        {
            get => _selectedItem;
            private set
            {
                if (_selectedItem != value)
                {
                    _selectedItem = value;
                    if (_selectedItem == null)
                    {
                        Text = string.Empty;
                    }
                    OnSelectionChanged();
                }
            }
        }

        public IEnumerable ItemsSource
        {
            get => SelectorItems.ItemsSource;
            set
            {
                if (SelectorItems.ItemsSource != value)
                {
                    SelectorItems.ItemsSource = value;
                    SelectedItem = null;
                }
            }
        }

        public string Text
        {
            get => _isEditable? SingleSelectorTextBox.Text: SingleSelectorButton.Content == null? string.Empty: SingleSelectorButton.Content.ToString();
            set
            {
                SingleSelectorTextBox.Text = value;
                SingleSelectorButton.Content = value;
            }
        }

        public SingleSelector()
        {
            InitializeComponent();
        }

        private void OnShowItemsClick(object sender, RoutedEventArgs e)
        {
            PART_Popup.IsOpen = true;
        }

        private void OnRefreshClick(object sender, RoutedEventArgs e)
        {
            OnRefreshed();
        }

        private void OnRefreshed()
        {
            Refreshed?.Invoke(this, EventArgs.Empty);
        }

        private void OnItemClick(object sender, RoutedEventArgs e)
        {
            SelectedItem = ((Button) sender).DataContext;
            SingleSelectorButton.Content = SelectedItem.ToString();
            SingleSelectorTextBox.Text = SelectedItem.ToString();
            PART_Popup.IsOpen = false;
        }

        private void OnSelectionChanged()
        {
            SelectionChanged?.Invoke(this, EventArgs.Empty);
        }
    }
}