using System;
using Foundation;
using Shared.IO;
using UIKit;

namespace Shared
{
	/// <summary>
	/// ImageView 
	/// </summary>
	public class ImageView : View
    {
        MyImageView myImageView
        {
            get
            {
                return uiView as MyImageView;
            }
            set
            {
                uiView = value;
            }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="Shared.Button"/> class.
        /// </summary>
        public ImageView()
        {
            myImageView = new MyImageView(this) { };
            
        }

		internal string imagePath, tempImagePath;
		/// <summary>
		/// 非选中状态的背景图路径
		/// </summary>
		/// <value>The un selected image path.</value>
		public string ImagePath
		{
			get
			{
				return imagePath;
			}
			set
			{
                tempImagePath = value;
                if (!IsCanRefresh)
                {
                    return;
                }
                if (imageBytes != null)
                {
                    myImageView.SetBackgroundImage(UIImage.LoadFromData(NSData.FromArray(imageBytes)), UIControlState.Normal);
                    return;
                }
                if (ImagePath == value)
                {
                    return;
                }
                imagePath = value;
				myImageView.SetBackgroundImage(UIImage.FromFile(FileUtils.GetImageFilePath(imagePath)), UIControlState.Normal);
			}
		}

        byte[] imageBytes;
        public byte[] ImageBytes
        {
            get
            {
                return imageBytes;
            }
            set
            {
                imageBytes = value;
                ImagePath = tempImagePath;
            }
        }


        public override void Refresh()
		{
			base.Refresh();

            ImagePath = tempImagePath;
        }
    }

	class MyImageView : UIKit.UIButton
	{
        [Weak] View view;
        public MyImageView(View view)
        {
            this.view = view;
        }
        /// <summary>
        /// 点击开始
        /// </summary>
        /// <param name="touches">Touches.</param>
        /// <param name="evt">Evt.</param>
        public override void TouchesBegan(NSSet touches, UIEvent evt)
        {
            view?.TouchEvent(EventActions.Down, (touches.AnyObject as UITouch).LocationInView(this));
        }
        /// <summary>
        ///  移动
        /// </summary>
        /// <param name="touches">Touches.</param>
        /// <param name="evt">Evt.</param>
        public override void TouchesMoved(NSSet touches, UIEvent evt)
        {
            view?.TouchEvent(EventActions.Move, (touches.AnyObject as UITouch).LocationInView(this));
        }

        /// <summary>
        /// 点击弹起
        /// </summary>
        /// <param name="touches">Touches.</param>
        /// <param name="evt">Evt.</param>
        public override void TouchesEnded(NSSet touches, UIEvent evt)
        {
            view?.TouchEvent(EventActions.Up, (touches.AnyObject as UITouch).LocationInView(this));
        }

        public override void TouchesCancelled(NSSet touches, UIEvent evt)
        {
            view?.TouchEvent(EventActions.Cancel, (touches.AnyObject as UITouch).LocationInView(this));
        }
    }
}