using MECF.Framework.UI.Client.CenterViews.Editors.Recipe;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace RecipeEditorLib.RecipeModel.Params
{
    public class BoolParam : Param
    {
        public delegate void ValueChangedEventHandler(object sender, SetValueEventArgs e);
        public event ValueChangedEventHandler ValueChangedEvent;

        public BoolParam() : base()
        {
            e.Sender = this;
            e.PropertyName = Name;
        }

        private SetValueEventArgs e = new SetValueEventArgs();

        public void OnValueChanged(SetValueEventArgs e)
        {
            if (ValueChangedEvent != null)
            {
                ValueChangedEvent(this, e);
            }
        }

        private bool _oldValue;

        public bool OldValue
        {
            get => _oldValue;
            set
            {
                _oldValue = value;
                NotifyOfPropertyChange("OldValue");
            }
        }

        private bool _value;
        public bool Value
        {
            get { return this._value; }
            set
            {
                this._value = value;
                if (IsSaved)
                {
                    OldValue = value;
                }
                e.PropertyValue = value.ToString();
                if (!IsSaved)
                OnValueChanged(e);
                if (this.Feedback != null)
                    this.Feedback(this);
                this.NotifyOfPropertyChange("Value");
            }
        }


        public  void SetValue(bool value)
        {
            OldValue= Value;
            IsSaved = false;
            Value = value;
        }

        public override bool UndoChanges()
        {
            Value = OldValue;
            IsSaved = true;
            return true;
        }
    }
}