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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using POSV.Entity;
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using POSV.Utils;
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namespace POSV.Component
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{
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public class TableMerge
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{
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public static List<Table> Merge(int rows , int cols , List<Table> dataSource , bool touchEnabled)
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{
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//启用触摸屏,不分页
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if (touchEnabled)
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{
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return dataSource;
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}
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//移除可能存在的分页标识
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dataSource.RemoveAll(x => Constant.PREV_PAGER.Equals(x.Name) || Constant.NEXT_PAGER.Equals(x.Name));
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int pageSize = rows * cols;
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int totalCount = dataSource.Count;
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//启用分页
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int pageCount = ((totalCount - 1) + (pageSize - 2) - 1) / (pageSize - 2);
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int offset = 0;
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int i = 1;
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for (; i < pageCount; i++)
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{
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offset += (pageSize - 1);
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if(i == 1)
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{
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//第一页,最后一位加下一页
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Table entity = new Table();
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entity.Id = IdWorkerUtils.Instance.NextId();
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entity.Name = Constant.NEXT_PAGER;
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entity.Pager = i + 1;
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dataSource.Insert(offset , entity);
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}
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else
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{
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//中间页,最后加前后
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var entity = new Table();
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entity.Id = IdWorkerUtils.Instance.NextId();
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entity.Name = Constant.PREV_PAGER;
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entity.Pager = i - 1;
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dataSource.Insert(offset - 1, entity);
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entity = new Table();
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entity.Id = IdWorkerUtils.Instance.NextId();
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entity.Name = Constant.NEXT_PAGER;
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entity.Pager = i + 1;
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dataSource.Insert(offset, entity);
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}
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offset ++;
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}
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if (pageCount > 1)
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{
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//最后一页,最后一位加上一页
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var entity = new Table();
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entity.Id = IdWorkerUtils.Instance.NextId();
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entity.Name = Constant.PREV_PAGER;
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entity.Pager = i - 1;
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dataSource.Insert(offset, entity);
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}
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return dataSource;
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}
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}
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}
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