#region

using System;
using System.Collections;
using System.Windows.Forms;
using CSFrameworkV5.Common;
using CSFrameworkV5.Core;
using DevExpress.XtraEditors.Controls;
using DevExpress.XtraGrid.Columns;
using DevExpress.XtraGrid.Views.Grid;

#endregion

namespace CSFrameworkV5.Library
{
    public partial class frmExportGridData : frmBaseDialog
    {
        private Hashtable _columnVisibleState;
        private GridView _gv;

        private frmExportGridData()
        {
            InitializeComponent();
            _columnVisibleState = new Hashtable();
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void btnCheckAll_Click(object sender, EventArgs e)
        {
            chkListColumns.CheckAll();
        }

        private void btnOk_Click(object sender, EventArgs e)
        {
            if (chkListColumns.CheckedItems.Count < 1)
            {
                Msg.Warning("请勾选要导出的栏位！");
                return;
            }

            try
            {
                var dlg = new SaveFileDialog();
                if (cmbFileFormat.SelectedIndex == 0)
                    dlg.Filter = cmbFileFormat.Text + "|*.xls";

                if (cmbFileFormat.SelectedIndex == 1)
                    dlg.Filter = cmbFileFormat.Text + "|*.xlsx";

                if (cmbFileFormat.SelectedIndex == 2)
                    dlg.Filter = cmbFileFormat.Text + "|*.pdf";

                if (cmbFileFormat.SelectedIndex == 3)
                    dlg.Filter = cmbFileFormat.Text + "|*.rtf";

                if (cmbFileFormat.SelectedIndex == 4)
                    dlg.Filter = cmbFileFormat.Text + "|*.html";

                if (dlg.ShowDialog() == DialogResult.OK)
                {
                    _gv.BeginUpdate();
                    HideColumn(true);
                    btnOk.Enabled = false;
                    frmWaitingEx.ShowMe(this);
                    if (cmbFileFormat.SelectedIndex == 0)
                        _gv.ExportToXls(dlg.FileName);

                    if (cmbFileFormat.SelectedIndex == 1)
                        _gv.ExportToXlsx(dlg.FileName);

                    if (cmbFileFormat.SelectedIndex == 2)
                        _gv.ExportToPdf(dlg.FileName);

                    if (cmbFileFormat.SelectedIndex == 3)
                        _gv.ExportToRtf(dlg.FileName);

                    if (cmbFileFormat.SelectedIndex == 4)
                        _gv.ExportToHtml(dlg.FileName);

                    frmWaitingEx.HideMe(this);
                    HideColumn(false);
                    _gv.EndUpdate();
                    Msg.ShowInformation("导出文件成功！\r\n" + dlg.FileName);
                }

                btnOk.Enabled = true;
            }
            catch (Exception ex)
            {
                frmWaitingEx.HideMe(this);
                Msg.ShowException(ex);
                btnOk.Enabled = true;
            }
        }

        private void btnUnCheckAll_Click(object sender, EventArgs e)
        {
            chkListColumns.UnCheckAll();
        }

        /// <summary>
        ///     功能入口
        /// </summary>
        /// <param name="gv"></param>
        public static void DoExport(GridView gv)
        {
            var form = new frmExportGridData();
            form._gv = gv;
            form.LoadGridColumns(gv, new string[] { });
            form.ShowDialog();
        }

        public static void DoExport(GridView gv, string[] columnFields)
        {
            var form = new frmExportGridData();
            form._gv = gv;
            form.LoadGridColumns(gv, columnFields);
            form.ShowDialog();
        }

        private void frmExportGridData_FormClosing(object sender,
            FormClosingEventArgs e)
        {
            HideColumn(false);
        }

        private void frmExportGridData_Load(object sender, EventArgs e)
        {
            cmbFileFormat.SelectedIndex = 0; //预设导出Excel
        }

        private void HideColumn(bool isHide)
        {
            //隐藏没有勾选的栏位
            if (isHide)
            {
                foreach (CheckedListBoxItem item in chkListColumns.Items)
                    _gv.Columns[item.Value.ToStringEx()].Visible =
                        item.CheckState == CheckState.Checked;
            }
            else
            {
                //还原栏位显示状态
                if (_columnVisibleState.Count > 0)
                    foreach (GridColumn col in _gv.Columns)
                        col.Visible = (bool)_columnVisibleState[col.FieldName];
            }
        }

        private void LoadGridColumns(GridView view, string[] columnFields)
        {
            chkListColumns.Items.Clear();

            var check = false;

            //加载栏位列表.
            foreach (GridColumn col in view.Columns)
            {
                check = Array.IndexOf(columnFields, col.FieldName) >= 0;
                chkListColumns.Items.Add(col.FieldName, col.Caption,
                    CheckState.Unchecked, true);
                if (!_columnVisibleState.ContainsKey(col.FieldName))
                    _columnVisibleState.Add(col.FieldName,
                        col.Visible); //保存栏位状态
            }
        }
    }
}