145 lines
4.2 KiB
C#
145 lines
4.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Web;
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namespace FineUIPro.Web.Controls
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{
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public class MultiHeaderTable
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{// 包含 rowspan，colspan 的多表头，方便生成 HTML 的 table 标签
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public List<List<object[]>> MultiTable = new List<List<object[]>>();
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// 最终渲染的列数组
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public List<GridColumn> Columns = new List<GridColumn>();
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public void ResolveMultiHeaderTable(GridColumnCollection columns)
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{
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List<object[]> row = new List<object[]>();
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foreach (GridColumn column in columns)
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{
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object[] cell = new object[4];
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cell[0] = 1; // rowspan
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cell[1] = 1; // colspan
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cell[2] = column;
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cell[3] = null;
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row.Add(cell);
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}
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ResolveMultiTable(row, 0);
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ResolveColumns(row);
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}
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private void ResolveColumns(List<object[]> row)
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{
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foreach (object[] cell in row)
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{
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GroupField groupField = cell[2] as GroupField;
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if (groupField != null && groupField.Columns.Count > 0)
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{
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List<object[]> subrow = new List<object[]>();
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foreach (GridColumn column in groupField.Columns)
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{
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subrow.Add(new object[]
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{
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1,
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1,
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column,
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groupField
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});
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}
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ResolveColumns(subrow);
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}
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else
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{
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Columns.Add(cell[2] as GridColumn);
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}
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}
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}
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private void ResolveMultiTable(List<object[]> row, int level)
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{
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List<object[]> nextrow = new List<object[]>();
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foreach (object[] cell in row)
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{
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GroupField groupField = cell[2] as GroupField;
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if (groupField != null && groupField.Columns.Count > 0)
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{
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// 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
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cell[1] = Convert.ToInt32(groupField.Columns.Count);
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PlusColspan(level - 1, cell[3] as GridColumn, groupField.Columns.Count - 1);
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foreach (GridColumn column in groupField.Columns)
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{
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nextrow.Add(new object[]
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{
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1,
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1,
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column,
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groupField
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});
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}
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}
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}
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MultiTable.Add(row);
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// 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
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if (nextrow.Count > 0)
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{
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PlusRowspan(level);
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ResolveMultiTable(nextrow, level + 1);
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}
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}
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private void PlusRowspan(int level)
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{
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if (level < 0)
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{
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return;
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}
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foreach (object[] cells in MultiTable[level])
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{
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GroupField groupField = cells[2] as GroupField;
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if (groupField != null && groupField.Columns.Count > 0)
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{
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// ...
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}
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else
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{
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cells[0] = Convert.ToInt32(cells[0]) + 1;
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}
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}
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PlusRowspan(level - 1);
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}
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private void PlusColspan(int level, GridColumn parent, int plusCount)
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{
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if (level < 0)
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{
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return;
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}
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foreach (object[] cells in MultiTable[level])
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{
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GridColumn column = cells[2] as GridColumn;
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if (column == parent)
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{
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cells[1] = Convert.ToInt32(cells[1]) + plusCount;
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PlusColspan(level - 1, cells[3] as GridColumn, plusCount);
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}
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}
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}
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}
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} |