using System;

using System.Collections.Generic;
using Com.Hdl.Widget.CoverFlowViewPager;

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>
        HDLCoverFlowViewPager mHDLCoverFlowViewPager
        {
            get
            {
                return AndroidView as HDLCoverFlowViewPager;
            }
            set
            {
                AndroidView = value;
            }
        }

        /// <summary>
        /// 父容器
        /// </summary>
        /// <value>The parent.</value>
        ViewGroup Parents { get;  set; }

        ///// <summary>
        ///// 视图高度
        ///// </summary>
        ///// <value>The height.</value>
        //public override int Height
        //{
        //    get
        //    {
        //        return base.Height;
        //    }
        //    set
        //    {
        //        base.Height = value;
        //        if (!IsCanRefresh)
        //        {
        //            return;
        //        }
        //        var layoutParameters = realViewGroup.LayoutParameters;
        //        layoutParameters.Height = Height;
        //        realViewGroup.LayoutParameters = layoutParameters;
        //    }
        //}

        ///// <summary>
        ///// 视图宽度
        ///// </summary>
        ///// <value>The width.</value>
        //public override int Width
        //{
        //    get
        //    {
        //        return base.Width;
        //    }
        //    set
        //    {
        //        base.Width = value;
        //        if (!IsCanRefresh)
        //        {
        //            return;
        //        }
        //        var layoutParameters = realViewGroup.LayoutParameters;
        //        layoutParameters.Width = Width;
        //        realViewGroup.LayoutParameters = layoutParameters;
        //    }
        //}

        /// <summary>
        /// 构造函数
        /// </summary>
        public UICoverFlowView()
        {
            mHDLCoverFlowViewPager = new HDLCoverFlowViewPager(Application.Activity);
            //viewList.Add(new Button { });
            //UpdateViewsList();
            mHDLCoverFlowViewPager.InitBanner(mAndroidViewsList, true, 15f)//开启3D画廊效果
                .AddPageMargin(0, 100)//参数1page之间的间距,参数2中间item距离边界的间距
                .FinishConfig()//这句必须加
                .AddGalleryListener(new OnSelectChangeListener(this));

            Parents = new ViewGroup();
            //Parents.AddChidren(this);
            //mOnSelectChangeListener = new OnSelectChangeListener(this);
            //mHDLCoverFlowViewPager.SetOptionsSelectChangeListener(mOnSelectChangeListener);
        }


        List<Android.Views.View> mAndroidViewsList = new List<Android.Views.View>();
        List<View> viewList = new List<View>();

        private void UpdateViewsList()
        {

            mAndroidViewsList.Clear();
            foreach (View MView in viewList)
            {
                mAndroidViewsList.Add(MView.AndroidView);
            }

            mHDLCoverFlowViewPager.UpdateViewsList(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;
                mHDLCoverFlowViewPager.SetCurrentItem(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>
        /// 增加子控件
        /// </summary>
        /// <param name="view">View.</param>
        public void AddChidren(View view)
        {
            view.Parent = Parents;

            viewList.Add(view);


            UpdateViewsList();

            view.Refresh();
            if (view is ViewGroup)
            {
                var tempViewGroup = (ViewGroup)view;
                for (int i = 0; i < tempViewGroup.ChildrenCount; i++)
                {
                    tempViewGroup.GetChildren(i).Refresh();
                }
            }

            //base.AddChidren(view);
     


        }


        /// <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];
        }


        ///// <summary>
        ///// 移除控件
        ///// </summary>
        ///// <param name="view">View.</param>
        //internal virtual void Remove(View view)
        //{
        //    if (view == null)
        //    {
        //        return;
        //    }

        //    mViewsList.Remove(view);
        //    UpdateViewsList(mViewsList);
        //    view.Parent = null;
        //}


        ///// <summary>
        ///// 设置PickerView 默认选中项
        ///// </summary>
        //public void setCurrentItems(int option1, int option2, int option3)
        //{

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

        //}


        ///// <summary>
        ///// 设置PickerView数据
        ///// </summary>
        //public void setNPicker(List<string> mFirstList, List<string> mSecondList, List<string> mThirdList)
        //{

        //    mHDLCoverFlowViewPager.SetNPicker(mFirstList, mSecondList, mThirdList);

        //}


        ///// <summary>
        ///// 设置PickerView 选中文字的颜色
        ///// </summary>
        //public void setTextColorCenter(uint mColor , int indexID) {

        //    byte r, g, b, a;
        //    r = (byte)(mColor / 256 / 256 % 256);
        //    g = (byte)(mColor / 256 % 256);
        //    b = (byte)(mColor % 256);
        //    a = (byte)(mColor / 256 / 256 / 256 % 256);

        //    mHDLCoverFlowViewPager.SetTextColorCenter(Android.Graphics.Color.Argb(a, r, g, b), indexID);
        //}




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

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



        public class OnSelectChangeListener : Java.Lang.Object, HDLCoverFlowViewPager.IOnClickGalleryListener
        {

            UICoverFlowView _UICoverFlowView;

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

            public void OnGalleryClick(int p0)
            {
                _UICoverFlowView.OnCoverFlowViewClickEvent?.Invoke(p0);

                _UICoverFlowView.pageIndex = p0;
            }

            public void OnGalleryPositionChange(int p0)
            {
                _UICoverFlowView.OnSelectChangeEvent?.Invoke(p0);
                _UICoverFlowView.pageIndex = p0;

            }


        }
    }
}