using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using 垂直剖面动态观测系统.Common;
using 垂直剖面动态观测系统.ViewModel;

namespace 垂直剖面动态观测系统.View
{
    /// <summary>
    /// ParameterView.xaml 的交互逻辑
    /// </summary>
    public partial class ParameterView : UserControl
    {

        GlobalValues globalValues = new GlobalValues();
        ObservableCollection<para> paraList = new ObservableCollection<para>();
        public ParameterView()
        {
            InitializeComponent();

            this.DataContext = globalValues;


            for (int i = 0; i < GlobalValues.Para_Model.DateTime.Count; i++)
            {
                paraList.Add(new para() { _datetime = GlobalValues.Para_Model.DateTime[i], _para = GlobalValues.Para_Model.Para[i] });
            }
            //dataGrid.ItemsSource = paraList;
            ShowPages(dataGrid, tools.ToDataTable(paraList), 12);
        }


        private DataTable _dt = new DataTable();
        //每页显示多少条
        private int pageNum = 10;
        //当前是第几页
        private int pIndex = 1;
        //对象
        private DataGrid grdList;
        //最大页数
        private int MaxIndex = 1;
        //一共多少条
        private int allNum = 0;

        #region 初始化数据
        public void ShowPages(DataGrid grd, DataTable dt, int Num)
        {
            if (dt == null || dt.Rows.Count == 0)
            {
                this.Visibility = Visibility.Hidden;
                return;
            }
            this._dt = dt.Clone();

            this.grdList = grd;
            this.pageNum = Num;
            this.pIndex = 1;
            foreach (DataRow dr in dt.Rows)
                this._dt.ImportRow(dr);
            SetMaxIndex();
            ReadDataTable();
        }
        public void ShowPages(int Num)
        {
            this.pageNum = Num;
            this.pIndex = 1;
            SetMaxIndex();
            ReadDataTable();
        }
        #endregion

        #region 画数据
        /// <summary>
        /// 画数据
        /// </summary>
        private void ReadDataTable()
        {
            try
            {
                page.Text = this.pIndex.ToString();
                countPage.Text = "页/共" + MaxIndex + "页";
                DataTable tmpTable = new DataTable();
                tmpTable = this._dt.Clone();
                int first = this.pageNum * (this.pIndex - 1);
                first = (first > 0) ? first : 0;
                //如何总数量大于每页显示数量
                if (this._dt.Rows.Count >= this.pageNum * this.pIndex)
                {
                    for (int i = first; i < pageNum * this.pIndex; i++)
                        tmpTable.ImportRow(this._dt.Rows[i]);
                }
                else
                {
                    for (int i = first; i < this._dt.Rows.Count; i++)
                        tmpTable.ImportRow(this._dt.Rows[i]);
                }
                this.grdList.ItemsSource = tmpTable.DefaultView;

                tmpTable.Dispose();
            }
            catch
            {
                MessageBox.Show("错误");
            }
            finally
            {
                DisplayPagingInfo();
            }

        }
        #endregion

        #region 画每页显示等数据
        /// <summary>
        /// 画每页显示等数据
        /// </summary>
        private void DisplayPagingInfo()
        {
            SolidColorBrush brush = new SolidColorBrush(Colors.Gray);
            SolidColorBrush brush2 = new SolidColorBrush(Color.FromArgb(255, 1, 84, 74));
            if (this.pIndex == 1)
            {
                this.btnPrev.IsEnabled = false;
                this.btnPrev.Foreground = brush;
            }
            else
            {
                this.btnPrev.IsEnabled = true;
                this.btnPrev.Foreground = brush2;
            }
            if (this.pIndex == this.MaxIndex)
            {
                this.btnNext.IsEnabled = false;

                this.btnNext.Foreground = brush;
            }
            else
            {
                this.btnNext.IsEnabled = true;
                this.btnNext.Foreground = brush2;
            }
            int first = (this.pIndex - 4) > 0 ? (this.pIndex - 4) : 1;
            int last = (first + 9) > this.MaxIndex ? this.MaxIndex : (first + 9);
            //  this.grid.Children.Clear();
            //for (int i = first; i <= last; i++)
            //{
            //    ColumnDefinition cdf = new ColumnDefinition();
            //    this.grid.ColumnDefinitions.Add(cdf);
            //    TextBlock tbl = new TextBlock();
            //    tbl.Text = i.ToString();
            //    tbl.MouseLeftButtonUp += new MouseButtonEventHandler(tbl_MouseLeftButtonUp);
            //    if (i == this.pIndex)
            //        tbl.IsEnabled = false;
            //    Grid.SetColumn(tbl, this.grid.ColumnDefinitions.Count - 1);
            //    Grid.SetRow(tbl, 0);
            //    this.grid.Children.Add(tbl);
            //}
        }
        #endregion

        #region 设置最多大页面
        /// <summary>
        /// 设置最多大页面
        /// </summary>
        private void SetMaxIndex()
        {
            //多少页
            int Pages = this._dt.Rows.Count / pageNum;
            if (this._dt.Rows.Count != (Pages * pageNum))
            {
                if (_dt.Rows.Count < (Pages * pageNum))
                    Pages--;
                else
                    Pages++;
            }
            this.MaxIndex = Pages;
            this.allNum = this._dt.Rows.Count;
        }
        #endregion
        /// <summary>
        /// 上一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnPrev_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (this.pIndex <= 1)
                return;
            this.pIndex--;
            ReadDataTable();
        }
        /// <summary>
        /// 下一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnNext_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (this.pIndex >= this.MaxIndex)
                return;
            this.pIndex++;
            ReadDataTable();
        }

        private void btnGO_Click(object sender, RoutedEventArgs e)
        {
            if (page.Text == "")
                return;
            if (Convert.ToInt32(page.Text) <= 1)
                return;
            this.pIndex = Convert.ToInt32(page.Text);
            ReadDataTable();
        }

        public class para
        {
            public string _datetime { get; set; }
            public float _para { get; set; }
        }

        private async void Button_Click(object sender, RoutedEventArgs e)
        {
            await Task.Delay(1000);
            paraList = new ObservableCollection<para>();
            for (int i = 0; i < GlobalValues.Para_Model.DateTime.Count; i++)
            {
                paraList.Add(new para() { _datetime = GlobalValues.Para_Model.DateTime[i], _para = GlobalValues.Para_Model.Para[i] });
            }
            ShowPages(dataGrid, tools.ToDataTable(paraList), 12);
        }

    }
}