GreenTree.Nachtragsmanagement/GreenTree.Nachtragsmanagement.Web/Extensions/MVCxGridViewGeneratorHelper.cs

using DevExpress.Data;
using DevExpress.XtraEditors.Controls;
using DevExpress.XtraPrinting;
using DevExpress.XtraReports.UI;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net.Mime;
using System.Web;

namespace GreenTree.Nachtragsmanagement.Web.Extensions
{
    public class MVCxGridViewGeneratorHelper
    {
        public delegate void CustomizeColumnsCollectionEventHandler(object source, ColumnsCreationEventArgs e);
        public delegate void CustomizeColumnEventHandler(object source, ControlCustomizationEventArgs e);
        public delegate void CustomizeColumnTotalSummaryEventHandler(object source, ColumnSummaryCreationEventArgs e);
        public delegate void CustomizeColumnGroupSummaryEventHandler(object source, ColumnSummaryCreationEventArgs e);

        public class MVCReportGeneratonHelper
        {
            const int initialGroupOffset = 0;
            const int subGroupOffset = 10;
            const int bandHeight = 20;
            const bool shouldRepeatGroupHeadersOnEveryPage = false;

            XtraReport report;

            Hashtable detailsInfo = new Hashtable();
            Hashtable detailsWidth = new Hashtable();

            public event CustomizeColumnsCollectionEventHandler CustomizeColumnsCollection;
            public event CustomizeColumnEventHandler CustomizeColumn;
            public event CustomizeColumnTotalSummaryEventHandler CustomizeTotalColumnSummary;
            public event CustomizeColumnGroupSummaryEventHandler CustomizeGroupColumnSummary;

            public XtraReport GenerateMVCReport(MVCxGridViewState gridViewState, object model)
            {
                report = new XtraReport
                {
                    Font = new Font("Calibri", 10f, FontStyle.Regular),
                    Landscape = true,
                    PaperKind = System.Drawing.Printing.PaperKind.A4
                };

                InitStyles();
                InitDataSource(model);
                InitDetailsAndPageHeader(gridViewState);
                InitDetailReports(gridViewState);
                InitSortings(gridViewState);
                InitGroupHeaders(gridViewState);
                InitFilters(gridViewState);
                InitTotalSummaries(gridViewState);

                return report;
            }

            private void InitStyles()
            {
                report.StyleSheet.Add(new XRControlStyle
                {
                    Name = "OddRow",
                    Borders = (DevExpress.XtraPrinting.BorderSide.Bottom |
                               DevExpress.XtraPrinting.BorderSide.Left |
                               DevExpress.XtraPrinting.BorderSide.Right),
                    Padding = new PaddingInfo(30, 600)
                });

                report.StyleSheet.Add(new XRControlStyle
                {
                    Name = "EvenRow",
                    BackColor = Color.LightGray,
                    Borders = (DevExpress.XtraPrinting.BorderSide.Bottom |
                               DevExpress.XtraPrinting.BorderSide.Left |
                               DevExpress.XtraPrinting.BorderSide.Right),
                    Padding = new PaddingInfo(30, 600)
                });

                report.StyleSheet.Add(new XRControlStyle
                {
                    Name = "HeaderRow",
                    BackColor = Color.FromArgb(156, 183, 191),
                    Borders = DevExpress.XtraPrinting.BorderSide.All,
                    Padding = new PaddingInfo(30, 600),
                    Font = new Font(report.Font, FontStyle.Bold)
                });

                report.StyleSheet.Add(new XRControlStyle
                {
                    Name = "GroupHeader",
                    BackColor = Color.Beige,
                    Borders = DevExpress.XtraPrinting.BorderSide.All,
                    Padding = new PaddingInfo(30, 600),
                    Font = new Font(report.Font, FontStyle.Bold)
                });

                report.StyleSheet.Add(new XRControlStyle
                {
                    Name = "SummaryRow",
                    BackColor = Color.FromArgb(35, 133, 160),
                    Borders = DevExpress.XtraPrinting.BorderSide.All,
                    BorderColor = Color.FromArgb(35, 133, 160),
                    Padding = new PaddingInfo(30, 600),
                    ForeColor = Color.White,
                    Font = new Font(report.Font, FontStyle.Bold)
                });

                report.StyleSheet.Add(new XRControlStyle
                {
                    Name = "DetailRow",
                    BackColor = Color.FromArgb(209, 228, 255),
                    Borders = DevExpress.XtraPrinting.BorderSide.All
                });

                report.StyleSheet.Add(new XRControlStyle
                {
                    Name = "DetailRowLabel",
                    Padding = new PaddingInfo(30, 600),
                    Borders = DevExpress.XtraPrinting.BorderSide.Bottom | 
                              DevExpress.XtraPrinting.BorderSide.Left | 
                              DevExpress.XtraPrinting.BorderSide.Right
                });
            }

            private void InitDataSource(object model)
            {
                report.DataSource = model;
            }

            private void InitDetailsAndPageHeader(MVCxGridViewState gridViewState)
            {
                var groupedColumns = gridViewState.GroupedColumns;

                var pagewidth = (report.PageWidth - (report.Margins.Left + report.Margins.Right)) - groupedColumns.Count * subGroupOffset;
                var columns = GetColumnsInfo(gridViewState, pagewidth);

                if (CustomizeColumnsCollection != null)
                    CustomizeColumnsCollection(report, new ColumnsCreationEventArgs(pagewidth)
                    {
                        ColumnsInfo = columns
                    });

                report.Bands.Add(new DetailBand()
                {
                    HeightF = bandHeight,
                    KeepTogetherWithDetailReports = true
                });
                report.Bands.Add(new PageHeaderBand()
                {
                    HeightF = bandHeight
                });

                var headerTable = new XRTable()
                {
                    StyleName = "HeaderRow"
                };
                var row = new XRTableRow();

                var detailTable = new XRTable
                {
                    OddStyleName = "OddRow",
                    EvenStyleName = "EvenRow"
                };
                var row2 = new XRTableRow();

                for (var i = 0; i < columns.Count; i++)
                {
                    if (columns[i].IsVisible)
                    {
                        var cell = new XRTableCell
                        {
                            Width = columns[i].ColumnWidth,
                            Text = columns[i].GridViewColumn.Caption,
                            Borders = DevExpress.XtraPrinting.BorderSide.All,
                            TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleLeft
                        };
                        row.Cells.Add(cell);

                        var cell2 = new XRTableCell
                        {
                            Width = columns[i].ColumnWidth
                        };

                        var cc = new ControlCustomizationEventArgs
                        {
                            FieldName = columns[i].FieldName,
                            IsModified = false,
                            Owner = cell2,
                            Header = cell
                        };

                        if (CustomizeColumn != null)
                            CustomizeColumn(report, cc);

                        if (cc.IsModified == false)
                        {
                            cell2.DataBindings.Add("Text", null, columns[i].FieldName,
                                "{0:" + columns[i].GridViewColumn.DisplayFormat + "}");
                        }

                        detailsInfo.Add(columns[i].GridViewColumn, cell2);

                        row2.Cells.Add(cell2);

                        detailsWidth.Add(columns[i].GridViewColumn, cell2.WidthF);
                    }
                }
                headerTable.Rows.Add(row);
                headerTable.Width = pagewidth;
                headerTable.LocationF = new PointF(groupedColumns.Count * subGroupOffset, 0);
                headerTable.Borders = DevExpress.XtraPrinting.BorderSide.Bottom;

                detailTable.Rows.Add(row2);
                detailTable.LocationF = new PointF(groupedColumns.Count * subGroupOffset, 0);
                detailTable.Width = pagewidth;

                report.Bands[BandKind.PageHeader].Controls.Add(headerTable);
                report.Bands[BandKind.Detail].Controls.Add(detailTable);
            }

            private void InitDetailReports(MVCxGridViewState gridViewState)
            {
                var groupedColumns = gridViewState.GroupedColumns;

                var pagewidth = (report.PageWidth - (report.Margins.Left + report.Margins.Right)) - groupedColumns.Count * subGroupOffset;
                var columns = GetColumnsInfo(gridViewState, pagewidth);

                if (CustomizeColumnsCollection != null)
                    CustomizeColumnsCollection(report, new ColumnsCreationEventArgs(pagewidth)
                    {
                        ColumnsInfo = columns
                    });

                var detailColumns = columns
                    .Where(c => c.IsDetail)
                    .ToList();

                if (!detailColumns.Any()) return;

                var detailReportBand = new DetailReportBand()
                {
                    HeightF = bandHeight
                };
                report.Bands.Add(detailReportBand);

                var detailReportTable = new XRTable
                {
                    OddStyleName = "DetailRow",
                    EvenStyleName = "DetailRow",
                    WidthF = pagewidth
                };
                var detailReportRow = new XRTableRow();

                foreach (var detailColumn in detailColumns)
                {
                    var cellDetail = new XRTableCell
                    {
                        WidthF = pagewidth / detailColumns.Count
                    };

                    var label = new XRLabel
                    {
                        StyleName = "DetailRowLabel",
                        WidthF = pagewidth / detailColumns.Count,
                        WordWrap = true
                    };

                    label.DataBindings.Add("Text", null, detailColumn.FieldName,
                        "{0:" + detailColumn.GridViewColumn.DisplayFormat + "}");

                    cellDetail.Controls.Add(label);

                    detailReportRow.Cells.Add(cellDetail);
                }

                detailReportTable.Rows.Add(detailReportRow);
                detailReportTable.LocationF = new PointF(groupedColumns.Count * subGroupOffset, 0);

                DetailBand detailBand = new DetailBand();
                detailBand.Height = detailReportTable.Height;
                detailReportBand.Bands.Add(detailBand);
                detailBand.Controls.Add(detailReportTable);
            }

            private void InitSortings(MVCxGridViewState gridViewState)
            {
                var columns = gridViewState.Columns;
                var groupedColumns = gridViewState.GroupedColumns;

                for (var i = 0; i < columns.Count; i++)
                {
                    if (!groupedColumns.Contains(columns[i]))
                    {
                        if (columns[i].SortOrder != ColumnSortOrder.None)
                            ((DetailBand)report.Bands[BandKind.Detail]).SortFields.Add(new GroupField(columns[i].FieldName, columns[i].SortOrder == ColumnSortOrder.Ascending ? XRColumnSortOrder.Ascending : XRColumnSortOrder.Descending));
                    }
                }
            }

            private void InitGroupHeaders(MVCxGridViewState gridViewState)
            {
                var groupedColumns = gridViewState.GroupedColumns;

                for (var i = groupedColumns.Count - 1; i >= 0; i--)
                {
                    var groupedColumn = groupedColumns[i];
                    var gb = new GroupHeaderBand
                    {
                        Height = bandHeight
                    };

                    var groupHeaderTable = new XRTable
                    {
                        StyleName = "GroupHeader",
                        LocationF = new PointF(initialGroupOffset + i * 10, 0),
                        SizeF = new SizeF((report.PageWidth - (report.Margins.Left + report.Margins.Right)) - (initialGroupOffset + i * subGroupOffset), bandHeight)
                    };
                    var groupHeaderRow = new XRTableRow();

                    var l = new XRTableCell
                    {
                        Text = groupedColumn.Caption + ": [" + groupedColumn.FieldName + "]",
                        Borders = DevExpress.XtraPrinting.BorderSide.Left |
                                  DevExpress.XtraPrinting.BorderSide.Top |
                                  DevExpress.XtraPrinting.BorderSide.Bottom
                    };

                    groupHeaderRow.Cells.Add(l);

                    foreach (MVCxSummaryItemState item in gridViewState.TotalSummary)
                    {
                        var sum = new XRTableCell
                        {
                            Borders = DevExpress.XtraPrinting.BorderSide.Top |
                                      DevExpress.XtraPrinting.BorderSide.Bottom
                        };

                        sum.Summary = new XRSummary
                        {
                            Running = SummaryRunning.Group
                        };
                        sum.Summary.Func = GetSummaryFunc(item.SummaryType);
                        sum.DataBindings.Add("Text", null, item.FieldName);

                        groupHeaderRow.Cells.Add(sum);

                        if (CustomizeGroupColumnSummary != null)
                            CustomizeGroupColumnSummary(report, new ColumnSummaryCreationEventArgs(item.FieldName, sum.Summary));
                    }

                    groupHeaderTable.Rows.Add(groupHeaderRow);
                    gb.Controls.Add(groupHeaderTable);

                    gb.RepeatEveryPage = shouldRepeatGroupHeadersOnEveryPage;

                    var gf = new GroupField(
                        groupedColumn.FieldName, groupedColumn.SortOrder == ColumnSortOrder.Ascending 
                            ? XRColumnSortOrder.Ascending 
                            : XRColumnSortOrder.Descending);

                    gb.GroupFields.Add(gf);
                    report.Bands.Add(gb);
                }
            }

            private void InitFilters(MVCxGridViewState gridViewState)
            {
                report.FilterString = gridViewState.FilterExpression;
            }

            private void InitTotalSummaries(MVCxGridViewState gridViewState)
            {
                if (gridViewState.TotalSummary.Count == 0) return;

                report.Bands.Add(new ReportFooterBand
                {
                    HeightF = bandHeight,
                    StyleName = "SummaryRow"
                });

                foreach (MVCxSummaryItemState item in gridViewState.TotalSummary)
                {
                    var col = gridViewState.Columns[item.ShowInColumn == string.Empty 
                        ? item.FieldName 
                        : item.ShowInColumn];

                    if (col == null) continue;

                    if (!detailsInfo.Contains(col)) return;

                    var label = new XRLabel
                    {
                        LocationF = new PointF(
                            ((XRTableCell)detailsInfo[col]).LocationF.X + subGroupOffset * gridViewState.GroupedColumns.Count,
                            ((XRTableCell)detailsInfo[col]).LocationF.Y),
                        SizeF = ((XRTableCell)detailsInfo[col]).SizeF
                    };
                    label.DataBindings.Add("Text", null, col.FieldName);
                    label.Summary = new XRSummary
                    {
                        Running = SummaryRunning.Report
                    };
                    label.Summary.FormatString = item.DisplayFormat;
                    label.Summary.Func = GetSummaryFunc(item.SummaryType);

                    report.Bands[BandKind.ReportFooter].Controls.Add(label);

                    if (CustomizeTotalColumnSummary != null)
                        CustomizeTotalColumnSummary(report, new ColumnSummaryCreationEventArgs(col.FieldName, label.Summary));
                }
            }

            private List<MVCxColumnInfo> GetColumnsInfo(MVCxGridViewState gridViewState, int pagewidth)
            {
                var columns = new List<MVCxColumnInfo>();
                var visibleColumns = gridViewState.Columns;

                foreach (var dataColumn in visibleColumns)
                {
                    MVCxColumnInfo column = new MVCxColumnInfo(dataColumn)
                    {
                        ColumnCaption = string.IsNullOrEmpty(dataColumn.Caption) ? dataColumn.FieldName : dataColumn.Caption,
                        ColumnWidth = ((int)pagewidth / visibleColumns.Count),
                        FieldName = dataColumn.FieldName,
                        IsVisible = true
                    };
                    columns.Add(column);
                }

                return columns;
            }

            private SummaryFunc GetSummaryFunc(SummaryItemType summaryItemType)
            {
                switch (summaryItemType)
                {
                    case SummaryItemType.Sum:
                        return SummaryFunc.Sum;
                    case SummaryItemType.Average:
                        return SummaryFunc.Avg;
                    case SummaryItemType.Max:
                        return SummaryFunc.Max;
                    case SummaryItemType.Min:
                        return SummaryFunc.Min;
                    case SummaryItemType.Count:
                        return SummaryFunc.Count;
                    default:
                        return SummaryFunc.Custom;
                }
            }

            public void WritePdfToResponse(HttpResponseBase Response, string fileName, string type)
            {
                report.CreateDocument(false);
                using (MemoryStream ms = new MemoryStream())
                {
                    report.ExportToPdf(ms);
                    ms.Seek(0, SeekOrigin.Begin);
                    WriteResponse(Response, ms.ToArray(), "application/pdf", type, fileName);
                }
            }

            public void WriteXlsToResponse(HttpResponseBase Response, string fileName, string type)
            {
                report.CreateDocument(false);
                using (MemoryStream ms = new MemoryStream())
                {
                    report.ExportToXls(ms);
                    ms.Seek(0, SeekOrigin.Begin);
                    WriteResponse(Response, ms.ToArray(), "application/vnd.ms-excel", type, fileName);
                }
            }

            public void WriteXlsxToResponse(HttpResponseBase Response, string fileName, string type)
            {
                report.CreateDocument(false);
                using (MemoryStream ms = new MemoryStream())
                {
                    report.ExportToXlsx(ms);
                    ms.Seek(0, SeekOrigin.Begin);
                    WriteResponse(Response, ms.ToArray(), "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", type, fileName);
                }
            }

            public static void WriteResponse(HttpResponseBase response, byte[] filearray, string contentType, string type, string fileName)
            {
                response.ClearContent();
                response.Buffer = true;
                response.Cache.SetCacheability(HttpCacheability.Private);
                response.ContentType = contentType;
                ContentDisposition contentDisposition = new ContentDisposition();
                contentDisposition.FileName = fileName;
                contentDisposition.DispositionType = type;
                response.AddHeader("Content-Disposition", contentDisposition.ToString());
                response.BinaryWrite(filearray);
                HttpContext.Current.ApplicationInstance.CompleteRequest();
                try
                {
                    response.End();
                }
                catch (System.Threading.ThreadAbortException)
                {

                }
            }
        }

        public class ControlCustomizationEventArgs : EventArgs
        {
            XRControl owner;

            public XRControl Owner
            {
                get
                {
                    return owner;
                }
                set
                {
                    owner = value;
                }
            }

            XRControl header;

            public XRControl Header
            {
                get
                {
                    return header;
                }
                set
                {
                    header = value;
                }
            }

            bool isModified;

            public bool IsModified
            {
                get
                {
                    return isModified;
                }
                set
                {
                    isModified = value;
                }
            }

            string fieldName;

            public string FieldName
            {
                get
                {
                    return fieldName;
                }
                set
                {
                    fieldName = value;
                }
            }
        }

        public class ColumnSummaryCreationEventArgs : EventArgs
        {
            public ColumnSummaryCreationEventArgs(string fieldName, XRSummary summary)
            {
                this.fieldName = fieldName;
                this.summary = summary;
            }

            XRSummary summary;

            public XRSummary Summary
            {
                get
                {
                    return summary;
                }
                set
                {
                    summary = value;
                }
            }

            string fieldName;

            public string FieldName
            {
                get
                {
                    return fieldName;
                }
                set
                {
                    fieldName = value;
                }
            }
        }

        public class ColumnsCreationEventArgs : EventArgs
        {
            int pageWidth;
            public int PageWidth
            {
                get
                {
                    return pageWidth;
                }
            }
            public ColumnsCreationEventArgs(int pageWidth)
            {
                this.pageWidth = pageWidth;
            }
            List<MVCxColumnInfo> columnsInfo;

            public List<MVCxColumnInfo> ColumnsInfo
            {
                get
                {
                    return columnsInfo;
                }
                set
                {
                    columnsInfo = value;
                }
            }
        }

        public class MVCxColumnInfo
        {
            public MVCxColumnInfo(GridViewDataColumnState gridViewColumn)
            {
                this.gridViewColumn = gridViewColumn;
            }
            GridViewDataColumnState gridViewColumn;

            public GridViewDataColumnState GridViewColumn
            {
                get
                {
                    return gridViewColumn;
                }
            }


            string columnCaption;
            public string ColumnCaption
            {
                get
                {
                    return columnCaption;
                }
                set
                {
                    columnCaption = value;
                }
            }
            string fieldName;

            public string FieldName
            {
                get
                {
                    return fieldName;
                }
                set
                {
                    fieldName = value;
                }
            }
            int columnWidth;

            public int ColumnWidth
            {
                get
                {
                    return columnWidth;
                }
                set
                {
                    columnWidth = value;
                }
            }
            bool isVisible;

            public bool IsVisible
            {
                get
                {
                    return isVisible;
                }
                set
                {
                    isVisible = value;
                }
            }
            bool isDetail;

            public bool IsDetail
            {
                get
                {
                    return isDetail;
                }
                set
                {
                    isDetail = value;
                }
            }
        }
    }
}