using DevExpress.XtraEditors;
using System;
using System.Drawing;
using System.Windows.Forms;

namespace ZJ_BYD.UserControls
{
    public partial class GridPage : XtraUserControl
    {
        private int allcount = 0;//总条数
        private int pageSize = 30;//每页显示条数
        private int curPage = 1;//当前页
        public delegate void GetPageDataEvents(int curPage, int pageSize);//定义委托
        public event GetPageDataEvents williamPagerEvent;//定义事件

        public GridPage()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 计算总页数
        /// </summary>
        /// <returns></returns>
        public int GetPageCount()
        {
            int pageCount;
            if (allcount % pageSize == 0)//取余为0
            {
                pageCount = allcount / pageSize;
            }
            else
            {
                pageCount = (allcount / pageSize) + 1;//不为0，所需页数加1
            }
            return pageCount;
        }

        /// <summary>
        /// 翻页
        /// </summary>
        /// <param name="pageSizeparam">一页显示条数</param>
        /// <param name="allCountparam">总条数</param>
        /// <param name="curPageparam">当前页</param>
        public void RefreshPager(int pageSizeparam, int allCountparam, int curPageparam)
        {
            this.allcount = allCountparam;
            this.pageSize = pageSizeparam;
            this.curPage = curPageparam;

            this.lblDesc.Font = new Font("宋体", 9, FontStyle.Regular);
            this.lblDesc.Text = string.Format("(共{0}条记录，每页{1}条，共{2}页)", allcount, pageSize, GetPageCount());
            this.txtCurentPage.Text = curPage.ToString();
            this.cbxPageSize.Text = pageSize.ToString();
            if (curPage == 0)
            {
                if (GetPageCount() > 0)
                {
                    curPage = 1;
                    williamPagerEvent(curPage, pageSize);
                }
            }
            if (curPage > GetPageCount())
            {
                curPage = GetPageCount();//输入页码大于总页数，取最大页数码
                williamPagerEvent(curPage, pageSize);
            }
        }

        /// 首页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnIndex_Click(object sender, EventArgs e)
        {
            if (williamPagerEvent != null)
            {
                curPage = 1;
                williamPagerEvent(curPage, pageSize);
            }
        }

        /// <summary>
        /// 上一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnPre_Click(object sender, EventArgs e)
        {
            if (williamPagerEvent != null)
            {
                if (curPage > 1)
                    curPage -= 1;
                williamPagerEvent(curPage, pageSize);
            }
        }

        /// <summary>
        /// 下一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnNext_Click(object sender, EventArgs e)
        {
            if (williamPagerEvent != null)
            {
                if (curPage < GetPageCount())
                    curPage += 1;
                williamPagerEvent(curPage, pageSize);
            }
        }

        /// <summary>
        /// 最后一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnLast_Click(object sender, EventArgs e)
        {
            if (williamPagerEvent != null)
            {
                curPage = GetPageCount();
                williamPagerEvent(curPage, pageSize);
            }
        }

        /// <summary>
        /// 每页记录数Change事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void cbxPageSize_SelectedIndexChanged(object sender, EventArgs e)
        {
            curPage = 1;
            int.TryParse(cbxPageSize.SelectedItem.ToString(), out pageSize);
            williamPagerEvent(curPage, pageSize);
        }

        /// <summary>
        /// 当前页文本框回车事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void txtCurentPage_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char)Keys.Enter)
            {
                int.TryParse(txtCurentPage.Text, out curPage);
                williamPagerEvent(curPage, pageSize);
            }
        }
    }
}