using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using DevExpress.XtraEditors;
using DevExpress.XtraGrid;
using Gs.DevApp.ToolBox;

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

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

        #region 定义属性


        int _TotalPages;
        /// <summary>
        /// 总页数
        /// </summary>
        public int TotalPages
        {
            get { return _TotalPages; }
            set
            {
                _TotalPages = value;
            }
        }

        /// <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

        //选择每页显示条数
        private void cbxRowCount_SelectedIndexChanged(object sender, EventArgs e)
        {
            RowsCount = Convert.ToInt32(cbxRowCount.Text);
            CurrentPage = 1;
            if (williamPagerEvent != 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)
            {
                int page = Convert.ToInt32(tbxCurrentPage.Text);
                if (page < 1)
                {
                    CurrentPage = 1;
                }
                else if (page > TotalPages)
                {
                    CurrentPage = TotalPages;
                }
                else
                {
                    CurrentPage = page;
                }
                if (williamPagerEvent != 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 (williamPagerEvent != 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 (williamPagerEvent != 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 (williamPagerEvent != null)
                BtnEvents(sender, e);
        }

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

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

        public void setTxt()
        {
            tbxCurrentPage.Text = CurrentPage.ToString();
            lbTotalPages.Text = "共 " + TotalPages.ToString() + "页";
            lbTotalRows.Text = "共 " + RecordCount.ToString() + " 条记录";
            this.cbxRowCount.Text = this.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;
        }
    }
}