using System;
using System.Collections.Generic;
using Shared.IOS.TBL;
using UIKit;

namespace Shared
{

    /// <summary>
    /// UICoverFlowView 已废弃，暂用HorizontalPages代替实现
    /// </summary>
    public class UICoverFlowView : View
    {
        /// <summary>
        ///  当前视图
        /// </summary>
        /// <value>The UICoverFlowView.</value>
        HDLCoverFlow mHDLCoverFlow
        {
            get
            {
                return uiView as HDLCoverFlow;
            }
            set
            {
                uiView = value;
            }
        }

     

        /// <summary>
        /// 构造函数
        /// </summary>
        public UICoverFlowView()
        {
            mHDLCoverFlow = new HDLCoverFlow
            {
           
                //MChangedDelegate = new OnSelectChangeListener(this)
            };

            Parents = new ViewGroup();
        }


        /// <summary>
        /// 刷新布局
        /// </summary>
        private void RefreshFrame()
        {
            mHDLCoverFlow.InitWithFrameArc(new CoreGraphics.CGRect(base.X, base.Y, base.Width, base.Height));
        }

        /// <summary>
		/// 控件宽度
		/// </summary>
		public override int Width
        {
            get
            {
                return base.Width;
            }
            set
            {
                base.Width = value;
                RefreshFrame();

            }
        }


        /// <summary>
        /// 控件的高度
        /// </summary>
        public override int Height
        {
            get
            {
                return base.Height;
            }
            set
            {
                base.Height = value;
                RefreshFrame();

            }
        }

        /// <summary>
        /// 控件的X坐标
        /// </summary>
        public override int X
        {
            get
            {
                return base.X;
            }
            set
            {
                base.X = value;
                RefreshFrame();

            }
        }


        /// <summary>
        /// 控件的X坐标
        /// </summary>
        public override int Y
        {
            get
            {
                return base.Y;
            }
            set
            {
                base.Y = value;
                RefreshFrame();

            }
        }



        //public void setCurrentItems(int option1, int option2, int option3)
        //{

        //    mHDLCoverFlow.SetCurrentItems(option1, option2, option3);

        //}

        //public void setNPicker(List<string> mFirstList, List<string> mSecondList, List<string> mThirdList)
        //{

        //    mHDLCoverFlow.SetNPicker(NSArray.FromObjects(mFirstList.ToArray()), NSArray.FromObjects(mSecondList.ToArray()), NSArray.FromObjects(mThirdList.ToArray()));

        //}



        UIView[] mAndroidViewsList;
        List<View> viewList = new List<View>();

        private void UpdateViewsList()
        {

            mAndroidViewsList = new UIView[viewList.Count];
            for (int i=0;i<viewList.Count;i++)
            {
                
                mAndroidViewsList[i]= viewList[i].RealView;
            }

            mHDLCoverFlow.AddCoverFlowViewDatas(mAndroidViewsList);
        }

        int pageIndex;
        /// <summary>
        /// 设置或者获取当前的界面索引
        /// </summary>
        /// <value>The index of the page.</value>
        public int PageIndex
        {
            get
            {
                return pageIndex;
            }
            set
            {
                if (value < 0 || viewList.Count < value)
                {
                    return;
                }

                pageIndex = value;
                mHDLCoverFlow.SetCoverFlowSelectIndex(pageIndex);


            }
        }



        public void Remove(View view)
        {
            if (view == null)
            {
                return;
            }

            viewList.Remove(view);
            //realViewGroup.RemoveView(view.AndroidView);
            //view.Parent = null;

            //base.Remove(view);
            //UpdateViewsList();
        }

        /// <summary>
        /// 父容器
        /// </summary>
        /// <value>The parent.</value>
        ViewGroup Parents;
        /// <summary>
        /// 增加子控件
        /// </summary>
        /// <param name="view">View.</param>
        public void AddChidren(View view)
        {
            view.Parent = Parents;
            view.Refresh();
            viewList.Add(view);

            //base.AddChidren(view);
            UpdateViewsList();
        }


        /// <summary>
        /// 清空所有的控件
        /// </summary>
        public void RemoveAll()
        {
            viewList.Clear();
            //base.RemoveAll();
            UpdateViewsList();
        }

        /// <summary>
        /// 移除指定索引对象
        /// </summary>
        /// <param name="index">Index.</param>
        public void RemoveAt(int index)
        {
            if (GetChildren(index) != null)
            {
                viewList.Remove(GetChildren(index));
                UpdateViewsList();
            }

            //base.RemoveAt(index);
            //UpdateViewsList();
        }


        /// <summary>
        /// 获取指定索引对象
        /// </summary>
        /// <returns>The children.</returns>
        /// <param name="index">Index.</param>
        public View GetChildren(int index)
        {
            if (viewList.Count - 1 < index || index < 0)
            {
                return null;
            }
            return viewList[index];
        }








        //public Action<int> OnSelectChangeEvent;
        public Action<int> OnCoverFlowViewClickEvent;

        /// <summary>
        /// Action
        /// </summary>
        public Action<int> OnSelectChangeEvent;

        /// <summary>
        /// OnSelectChangeListener 继承响应事件
        /// </summary>
        OnSelectChangeListener mOnSelectChangeListener;

        public class OnSelectChangeListener : SelectItemDelegate
        {

            [Weak] UICoverFlowView _UICoverFlowView;

            public OnSelectChangeListener(UICoverFlowView view)
            {
                _UICoverFlowView = view;
            }

            public override void OnSelectItem(nint mSelectIndex)
            {
                _UICoverFlowView.OnSelectChangeEvent?.Invoke((int)mSelectIndex);
            }


        }
    }
}