using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using AspNet = System.Web.UI.WebControls;
using BLL;
using System.Text;
using System.Data.SqlClient;
using System.Data;

namespace FineUIPro.Web.HJGL.WeldingManage
{
    public partial class PipelineManageOut2 : PageBase
    {
        #region 加载
        /// <summary>
        /// 加载页面
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                ddlPageSize.SelectedValue = Grid1.PageSize.ToString();
                // 绑定表格
                BindGrid();
            }
        }

        /// <summary>
        /// 绑定数据
        /// </summary>
        private void BindGrid()
        {
            string strSql = @"SELECT IsoInfo.ISO_ID"
                          + @",IsoInfo.ProjectId"
                          + @",IsoInfo.ISO_IsoNo"
                          + @",IsoClass.ISC_IsoName"
                          + @",IsoInfo.ISO_DesignPress"
                          + @",IsoInfo.ISO_DesignTemperature"
                          + @",IsoInfo.OperatingTemperature"
                          + @",Ser.SER_Name"
                          + @",MaterialStandard.MaterialStandardName "
                          + @",IsoInfo.PipeLineLength"
                          + @" FROM dbo.HJGL_PW_IsoInfo AS IsoInfo "
                          + @" LEFT JOIN HJGL_BS_IsoClass AS IsoClass ON IsoClass.ISC_ID = IsoInfo.ISC_ID "
                          + @" LEFT JOIN HJGL_BS_Service AS Ser ON Ser.SER_ID = IsoInfo.SER_ID "
                          + @" LEFT JOIN HJGL_BS_MaterialStandard AS MaterialStandard ON MaterialStandard.MaterialStandardId = IsoInfo.MaterialStandardId "
                          + @" WHERE IsoInfo.ProjectId=@ProjectId ";
            List<SqlParameter> listStr = new List<SqlParameter>();
            listStr.Add(new SqlParameter("@ProjectId", this.CurrUser.LoginProjectId));

            SqlParameter[] parameter = listStr.ToArray();
            DataTable tb = SQLHelper.GetDataTableRunText(strSql, parameter);

            // 2.获取当前分页数据
            //var table = this.GetPagedDataTable(Grid1, tb1);
            Grid1.RecordCount = tb.Rows.Count;
            tb = GetFilteredTable(Grid1.FilteredData, tb);
            var table = this.GetPagedDataTable(Grid1, tb);
            Grid1.DataSource = table;
            Grid1.DataBind();
        }
        #endregion

        #region 页索引改变事件
        /// <summary>
        /// 页索引改变事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Grid1_PageIndexChange(object sender, GridPageEventArgs e)
        {
            Grid1.PageIndex = e.NewPageIndex;
            BindGrid();
        }
        #endregion

        #region 排序
        /// <summary>
        /// 排序
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Grid1_Sort(object sender, GridSortEventArgs e)
        {
            Grid1.SortDirection = e.SortDirection;
            Grid1.SortField = e.SortField;
            BindGrid();
        }
        #endregion

        #region 分页选择下拉改变事件
        /// <summary>
        /// 分页选择下拉改变事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void ddlPageSize_SelectedIndexChanged(object sender, EventArgs e)
        {
            Grid1.PageSize = Convert.ToInt32(ddlPageSize.SelectedValue);
            BindGrid();
        }
        #endregion

        #region 导出按钮
        /// 导出按钮
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnExport_Click(object sender, EventArgs e)
        {
            Response.ClearContent();
            string filename = Funs.GetNewFileName();
            Response.AddHeader("content-disposition", "attachment; filename=" + System.Web.HttpUtility.UrlEncode("压力管道安装基本情况及压力试验专项监检报告、泄漏性试验汇总表" + filename, System.Text.Encoding.UTF8) + ".xls");
            Response.ContentType = "application/excel";
            Response.ContentEncoding = System.Text.Encoding.UTF8;
            this.Grid1.PageSize = 10000;
            this.BindGrid();
            Response.Write(GetGridTableHtml(Grid1));
            Response.End();
        }

        /// <summary>
        /// 导出方法
        /// </summary>
        /// <param name="grid"></param>
        /// <returns></returns>
        private string GetGridTableHtml(Grid grid)
        {
            StringBuilder sb = new StringBuilder();
            MultiHeaderTable mht = new MultiHeaderTable();
            mht.ResolveMultiHeaderTable(Grid1.Columns);
            sb.Append("<meta http-equiv=\"content-type\" content=\"application/excel; charset=UTF-8\"/>");
            sb.Append("<table cellspacing=\"0\" rules=\"all\" border=\"1\" style=\"border-collapse:collapse;\">");
            foreach (List<object[]> rows in mht.MultiTable)
            {
                sb.Append("<tr>");
                foreach (object[] cell in rows)
                {
                    int rowspan = Convert.ToInt32(cell[0]);
                    int colspan = Convert.ToInt32(cell[1]);
                    GridColumn column = cell[2] as GridColumn;
                    sb.AppendFormat("<th{0}{1}{2}>{3}</th>",
                        rowspan != 1 ? " rowspan=\"" + rowspan + "\"" : "",
                        colspan != 1 ? " colspan=\"" + colspan + "\"" : "",
                        colspan != 1 ? " style=\"text-align:center;\"" : "",
                        column.HeaderText);
                }
                sb.Append("</tr>");
            }
            foreach (GridRow row in grid.Rows)
            {
                sb.Append("<tr>");
                foreach (GridColumn column in mht.Columns)
                {
                    string html = row.Values[column.ColumnIndex].ToString();
                    if (column.ColumnID == "tfNumber")
                    {
                        html = (row.FindControl("lblNumber") as AspNet.Label).Text;
                    }
                    sb.AppendFormat("<td>{0}</td>", html);
                }
                sb.Append("</tr>");
            }
            sb.Append("</table>");
            return sb.ToString();
        }

        public class MultiHeaderTable
        {
            // 包含 rowspan，colspan 的多表头，方便生成 HTML 的 table 标签
            public List<List<object[]>> MultiTable = new List<List<object[]>>();
            // 最终渲染的列数组
            public List<GridColumn> Columns = new List<GridColumn>();
            public void ResolveMultiHeaderTable(GridColumnCollection columns)
            {
                List<object[]> row = new List<object[]>();
                foreach (GridColumn column in columns)
                {
                    object[] cell = new object[4];
                    cell[0] = 1;    // rowspan
                    cell[1] = 1;    // colspan
                    cell[2] = column;
                    cell[3] = null;
                    row.Add(cell);
                }
                ResolveMultiTable(row, 0);
                ResolveColumns(row);
            }

            private void ResolveColumns(List<object[]> row)
            {
                foreach (object[] cell in row)
                {
                    GroupField groupField = cell[2] as GroupField;
                    if (groupField != null && groupField.Columns.Count > 0)
                    {
                        List<object[]> subrow = new List<object[]>();
                        foreach (GridColumn column in groupField.Columns)
                        {
                            subrow.Add(new object[]
                        {
                        1,
                        1,
                        column,
                        groupField
                        });
                        } ResolveColumns(subrow);
                    }
                    else
                    {
                        Columns.Add(cell[2] as GridColumn);
                    }
                }
            }
            private void ResolveMultiTable(List<object[]> row, int level)
            {
                List<object[]> nextrow = new List<object[]>();
                foreach (object[] cell in row)
                {
                    GroupField groupField = cell[2] as GroupField;
                    if (groupField != null && groupField.Columns.Count > 0)
                    {
                        // 如果当前列包含子列，则更改当前列的 colspan，以及增加父列（向上递归）的colspan
                        cell[1] = Convert.ToInt32(groupField.Columns.Count);
                        PlusColspan(level - 1, cell[3] as GridColumn, groupField.Columns.Count - 1);
                        foreach (GridColumn column in groupField.Columns)
                        {
                            nextrow.Add(new object[]
                         {
                             1,
                             1,
                             column,
                             groupField
                         });
                        }
                    }
                }
                MultiTable.Add(row);
                // 如果当前下一行，则增加上一行（向上递归）中没有子列的列的 rowspan
                if (nextrow.Count > 0)
                {
                    PlusRowspan(level);
                    ResolveMultiTable(nextrow, level + 1);
                }
            }
            private void PlusRowspan(int level)
            {
                if (level < 0)
                {
                    return;
                }
                foreach (object[] cells in MultiTable[level])
                {
                    GroupField groupField = cells[2] as GroupField;
                    if (groupField != null && groupField.Columns.Count > 0)
                    {
                        // ...
                    }
                    else
                    {
                        cells[0] = Convert.ToInt32(cells[0]) + 1;
                    }
                }
                PlusRowspan(level - 1);
            }
            private void PlusColspan(int level, GridColumn parent, int plusCount)
            {
                if (level < 0)
                {
                    return;
                }
                foreach (object[] cells in MultiTable[level])
                {
                    GridColumn column = cells[2] as GridColumn;
                    if (column == parent)
                    {
                        cells[1] = Convert.ToInt32(cells[1]) + plusCount;
                        PlusColspan(level - 1, cells[3] as GridColumn, plusCount);
                    }
                }
            }
        }
        #endregion
    }
}