using AIStudio.Wpf.Controls;
using GongSolutions.Wpf.DragDrop;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows.Controls;
using WPFProject.Models;
using WPFProject.Utils;

namespace WPFProject.UI.Test
{


    /// <summary>
    /// SequnceList.xaml 的交互逻辑
    /// </summary>
    public partial class SequnceList : UserControl, INotifyPropertyChanged
    {
        public virtual event PropertyChangedEventHandler PropertyChanged;

        protected virtual void RaisePropertyChanged(string name)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
        }

        protected void RaiseAndSetIfChanged<T>(ref T old, T @new, [CallerMemberName] string propertyName = null)
        {
            old = @new;
            if (propertyName != null)
            {
                RaisePropertyChanged(propertyName);
            }
        }
        public SequnceList()
        {
            DataContext = this;

            Sequences = new ObservableCollection<Sequence>
            {
                new Sequence{ Name="SSSSS"},
                new Sequence{ Name="SSSSS2"},
            };

            Steps = Sequences[0].Steps;

            InitializeComponent();
        }
        private ObservableCollection<Program> _ps = new ObservableCollection<Program>();
        public ObservableCollection<Program> Ps
        {
            get => _ps;
            set => RaiseAndSetIfChanged(ref _ps, value);
        }


        private ObservableCollection<Sequence> _Sequences;
        public ObservableCollection<Sequence> Sequences
        {
            get => _Sequences;
            set
            {
                if (value != null && value.Count > 0)
                {
                    Steps = value[0].Steps;
                }
                else {
                    Steps = null;
                }
                RaiseAndSetIfChanged(ref _Sequences, value);
            }
        }

        private ObservableCollection<Step> _Steps;
        public ObservableCollection<Step> Steps
        {
            get => _Steps;
            set => RaiseAndSetIfChanged(ref _Steps, value);
        }


        public void Selected_Program_Changed(object sender, Program program)
        {
            this.Sequences = program.Sequences;
        }

        private void ListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (e.AddedItems.Count > 0)
            {
                Steps = (e.AddedItems[0] as Sequence).Steps;
            }
        }

        public IDropTarget dropHandler { get; set; } = new DdDropHandler();

    }
}