using System;
using System.Windows.Forms;

namespace UserControls.Data
{
    public partial class UcPageBar : UserControl
    {
        public delegate void
            GetPageDataEvents(int curPage, int pageSize); //定义委托

        public UcPageBar()
        {
            InitializeComponent();
            // UtilityHelper.SetFont(layoutControl1);
        }

        public event GetPageDataEvents PagerEvent; //定义事件

        //选择每页显示条数
        private void cbxRowCount_SelectedIndexChanged(object sender,
            EventArgs e)
        {
            RowsCount = Convert.ToInt32(cbxRowCount.Text);
            CurrentPage = 1;
            if (PagerEvent != null)
                BtnEvents(sender, e);
        }

        //手动输入显示页面编号
        private void tbxCurrentPage_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                var page = Convert.ToInt32(tbxCurrentPage.Text);
                if (page < 1)
                    CurrentPage = 1;
                else if (page > TotalPages)
                    CurrentPage = TotalPages;
                else
                    CurrentPage = page;
                if (PagerEvent != null)
                    BtnEvents(sender, e);
            }
        }


        //点击首页按钮
        private void lbFirstPage_Click(object sender, EventArgs e)
        {
            if (CurrentPage == 1)
                return;
            CurrentPage = 1;
            if (PagerEvent != null)
                BtnEvents(sender, e);
        }

        //点击上一页按钮
        private void lbPrePage_Click(object sender, EventArgs e)
        {
            if (CurrentPage == 1)
                return;
            if (CurrentPage <= TotalPages) CurrentPage -= 1;
            if (PagerEvent != null)
                BtnEvents(sender, e);
        }

        //点击下一页按钮
        private void lbNextPage_Click(object sender, EventArgs e)
        {
            if (CurrentPage == TotalPages)
                return;
            if (CurrentPage < TotalPages) CurrentPage += 1;
            if (PagerEvent != null)
                BtnEvents(sender, e);
        }

        //末页按钮
        private void lbEnd_Click(object sender, EventArgs e)
        {
            if (CurrentPage == TotalPages)
                return;
            CurrentPage = TotalPages;
            if (PagerEvent != null)
                BtnEvents(sender, e);
        }

        private void BtnEvents(object sender, EventArgs e)
        {
            //setTxt();
            PagerEvent(CurrentPage, RowsCount);
        }

        public void setTxt()
        {
            tbxCurrentPage.Text = CurrentPage.ToString();
            lbTotalPages.Text = "共 " + TotalPages + "页";
            lbTotalRows.Text = "共 " + RecordCount + " 条记录";
            cbxRowCount.Text = RowsCount.ToString();
            if (CurrentPage == 1)
                lbFirstPage.Enabled = false;
            else
                lbFirstPage.Enabled = true;
            if (CurrentPage == TotalPages)
                lbEnd.Enabled = false;
            else
                lbEnd.Enabled = true;
            if (CurrentPage == 1)
                lbPrePage.Enabled = false;
            else
                lbPrePage.Enabled = true;
            if (CurrentPage == TotalPages)
                lbNextPage.Enabled = false;
            else
                lbNextPage.Enabled = true;
        }

        #region 定义属性

        /// <summary>
        ///     总页数
        /// </summary>
        public int TotalPages { get; set; }

        /// <summary>
        ///     当前页
        /// </summary>
        public int CurrentPage { get; set; }

        /// <summary>
        ///     每页条数
        /// </summary>
        public int RowsCount { get; set; }

        /// <summary>
        ///     总记录数
        /// </summary>
        public int RecordCount { get; set; }

        #endregion
    }
}