DeedyDesigner/DeedyDesigner/Deedy.Activity/Collection/DeedyElementCollection.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Deedy.Activity
{
    public class DeedyElementCollection : ObservableCollection<IElement>
    {
        public DeedyElementCollection() : this(false) { }
        public DeedyElementCollection(bool needDistinct = false)
        {
            this._needDistinct = needDistinct;
        }
        private bool _needDistinct = false;
        public void AddRange(params IElement[] elements)
        {
            foreach (var element in elements) this.Add(element);
        }
        public void AddRange([AllowNull] IEnumerable<IElement> elements)
        {
            if (elements != null) foreach (var element in elements) this.Add(element);
        }
        public new void Add([AllowNull] IElement element)
        {
            if (element == null) return;
            if (this._needDistinct)
            {
                foreach (var item in this.Items)
                {
                    if (element.DEClass == item.DEClass && element.DETitle == item.DETitle) return;
                }
            }
            base.Add(element);
        }
    }
}