mcs/class/System.Web/System.Web.UI.WebControls/RepeatInfo.cs

   1 /**\r
   2  * Namespace: System.Web.UI.WebControls\r
   3  * Class:     RepeatInfo\r
   4  * \r
   5  * Author:  Gaurav Vaish\r
   6  * Maintainer: gvaish@iitk.ac.in\r
   7  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>\r
   8  * Implementation: yes\r
   9  * Status:  90%\r
  10  * \r
  11  * (C) Gaurav Vaish (2002)\r
  12  */\r
  13 \r
  14 using System;\r
  15 using System.Web;\r
  16 using System.Web.UI;\r
  17 \r
  18 namespace System.Web.UI.WebControls\r
  19 {\r
  20         public sealed class RepeatInfo\r
  21         {\r
  22                 private bool            outerTableImp;\r
  23                 private int             repeatColumns;\r
  24                 private RepeatDirection repeatDirection;\r
  25                 private RepeatLayout    repeatLayout;\r
  26                 \r
  27                 public RepeatInfo()\r
  28                 {\r
  29                         outerTableImp   = false;\r
  30                         repeatColumns   = 0;\r
  31                         repeatDirection = RepeatDirection.Vertical;\r
  32                         repeatLayout    = RepeatLayout.Table;\r
  33                 }\r
  34                 \r
  35                 public bool OuterTableImplied\r
  36                 {\r
  37                         get\r
  38                         {\r
  39                                 return outerTableImp;\r
  40                         }\r
  41                         set\r
  42                         {\r
  43                                 outerTableImp = value;\r
  44                         }\r
  45                 }\r
  46                 \r
  47                 public int RepeatColumns\r
  48                 {\r
  49                         get\r
  50                         {\r
  51                                 return repeatColumns;\r
  52                         }\r
  53                         set\r
  54                         {\r
  55                                 repeatColumns = value;\r
  56                         }\r
  57                 }\r
  58                 \r
  59                 public RepeatDirection RepeatDirection\r
  60                 {\r
  61                         get\r
  62                         {\r
  63                                 return repeatDirection;\r
  64                         }\r
  65                         set\r
  66                         {\r
  67                                 if(!Enum.IsDefined(typeof(RepeatDirection), value))\r
  68                                         throw new ArgumentException();\r
  69                                 repeatDirection = value;\r
  70                         }\r
  71                 }\r
  72                 \r
  73                 public RepeatLayout RepeatLayout\r
  74                 {\r
  75                         get\r
  76                         {\r
  77                                 return repeatLayout;\r
  78                         }\r
  79                         set\r
  80                         {\r
  81                                 if(!Enum.IsDefined(typeof(RepeatLayout), value))\r
  82                                         throw new ArgumentException();\r
  83                                 repeatLayout = value;\r
  84                         }\r
  85                 }\r
  86                 \r
  87                 public void RenderRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl)\r
  88                 {\r
  89                         if(RepeatDirection == RepeatDirection.Vertical)\r
  90                         {\r
  91                                 DoVerticalRendering(writer, user, controlStyle, basecontrol);\r
  92                         } else\r
  93                         {\r
  94                                 DoHorizontalRendering(writer, user, controlStyle, basecontrol);\r
  95                         }\r
  96                 }\r
  97                 \r
  98                 private void DoVerticalRendering(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl)\r
  99                 {\r
 100                         int total = user.RepeatedItemCount;\r
 101                         int colsCount;\r
 102                         int rowsCount;\r
 103                         if(repeatColumns == 0 || repeatColumns==1)\r
 104                         {\r
 105                                 colsCount = 1;\r
 106                                 rowsCount = total;\r
 107                         } else\r
 108                         {\r
 109                                 colsCount = repeatColumns;\r
 110                                 rowsCount = (total + repeatColumns - 1) / repeatColumns;\r
 111                                 if(rowsCount ==0 && total != 0)\r
 112                                 {\r
 113                                         rowsCount = 1;\r
 114                                         colsCount = total;\r
 115                                 }\r
 116                         }\r
 117                         WebControl ctrl = null;\r
 118                         bool isTable = true;\r
 119                         bool hasSeps = user.HasSeparators;\r
 120                         if(!outerTableImpl)\r
 121                         {\r
 122                                 if(RepeatLayout == RepeatLayout.Table)\r
 123                                 {\r
 124                                         ctrl = new Table();\r
 125                                 } else\r
 126                                 {\r
 127                                         ctrl = new WebControl(HtmlTextWriterTag.Span);\r
 128                                         isTable = false;\r
 129                                 }\r
 130                         }\r
 131                         \r
 132                         if(ctrl != null)\r
 133                         {\r
 134                                 ctrl.ID = baseControl.ClientID;\r
 135                                 ctrl.CopyBaseAttributes(baseControl);\r
 136                                 ctrl.ApplyControlStyle(controlStyle);\r
 137                                 ctrl.RenderBeginTag(writer);\r
 138                         }\r
 139                         \r
 140                         Style itemStyle;\r
 141                         int colSpan = 0;\r
 142                         if(user.HasHeader)\r
 143                         {\r
 144                                 if(isTable)\r
 145                                 {\r
 146                                         writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 147                                         if(rowsCount != 1)\r
 148                                         {\r
 149                                                 colSpan = rowsCount;\r
 150                                                 if(hasSeps)\r
 151                                                         colSpan += rowsCount;\r
 152                                                 writer.AddAttribute(HtmlTextWriterAttribute.Colspan, colSpan.ToString(NumberFormatInfo.InvariantInfo));\r
 153                                         }\r
 154                                         itemStyle = user.GetItemStyle(ListItemType.Header, -1);\r
 155                                         if(itemStyle != null)\r
 156                                         {\r
 157                                                 itemStyle.AddAttributesToRender(writer);\r
 158                                         }\r
 159                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 160                                 }\r
 161                                 user.RenderItem(ListItemType.Header, -1, this, writer);\r
 162                                 if(isTable)\r
 163                                 {\r
 164                                         writer.RenderEndTag();\r
 165                                         writer.RenderEndTag();\r
 166                                 } else\r
 167                                 {\r
 168                                         if(!outerTableImp)\r
 169                                         {\r
 170                                                 writer.WriteFullBeginTag("br");\r
 171                                         }\r
 172                                 }\r
 173                         }\r
 174                         \r
 175                         int rowIndex = 0;\r
 176                         int colIndex = 0;\r
 177                         int index = 0;\r
 178                         while(rowIndex < rowsCount)\r
 179                         {\r
 180                                 if(isTable)\r
 181                                         writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 182                                 colIndex = 0;\r
 183                                 while(colIndex < colCount)\r
 184                                 {\r
 185                                         index = rowIndex + colIndex * rowsCount;\r
 186                                         if(index < total)\r
 187                                         {\r
 188                                                 if(isTable)\r
 189                                                 {\r
 190                                                         itemStyle = user.GetItemStyle(ListItemType.Item, index);\r
 191                                                         if(itemStyle != null)\r
 192                                                         {\r
 193                                                                 itemStyle.AddAttributesToRender(writer);\r
 194                                                         }\r
 195                                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 196                                                 }\r
 197                                                 user.RenderItem(ListItemType.Item, index, this, writer);\r
 198                                                 if(isTable)\r
 199                                                         writer.RenderEndTag();\r
 200                                                 if(hasSeps && index != (total - 1))\r
 201                                                 {\r
 202                                                         if(colsCount == 1)\r
 203                                                         {\r
 204                                                                 writer.RenderEndTag();\r
 205                                                                 writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 206                                                         } else\r
 207                                                         {\r
 208                                                                 writer.WriteFullBeginTag("br");\r
 209                                                         }\r
 210                                                         if(isTable)\r
 211                                                         {\r
 212                                                                 itemStyle = user.GetItemStyle(ListItemType.Separator, index);\r
 213                                                                 if(itemStyle != null)\r
 214                                                                         itemStyle.AddAttributesToRender(writer);\r
 215                                                                 writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 216                                                         }\r
 217                                                         if(index < total)\r
 218                                                                 user.RenderItem(ListItemType.Separator, index, this, writer);\r
 219                                                         if(isTable)\r
 220                                                                 writer.RenderEndTag();\r
 221                                                 }\r
 222                                         }\r
 223                                         colIndex++;\r
 224                                 }\r
 225                                 if(isTable)\r
 226                                         writer.RenderEndTag();\r
 227                                 else\r
 228                                         if(rowIndex != (rowCount - 1) || (user.hasFooter && !outerTableImp))\r
 229                                                 writer.WriteFullBeginTag("br");\r
 230                                 rowIndex++;\r
 231                         }\r
 232                         if(user.HasFooter)\r
 233                         {\r
 234                                 if(isTable)\r
 235                                 {\r
 236                                         writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 237                                         if(colsCount != 1)\r
 238                                         {\r
 239                                                 writer.AddAttribute(HtmlTextWriterAttribute.Colspan, colSpan.ToString(NumberFormatInfo.InvariantInfo));\r
 240                                         }\r
 241                                         itemStyle = user.GetItemStyle(ListItemType.Footer, -1);\r
 242                                         if(itemStyle != null)\r
 243                                         {\r
 244                                                 itemStyle.AddAttributesToRender(writer);\r
 245                                         }\r
 246                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 247                                 }\r
 248                                 user.RenderItem(ListItemType.Footer, -1, this, writer);\r
 249                                 if(isTable)\r
 250                                 {\r
 251                                         writer.RenderEndTag();\r
 252                                         writer.RenderEndTag();\r
 253                                 }\r
 254                         }\r
 255                         if(ctrl != null)\r
 256                         {\r
 257                                 ctrl.RenderEndTag(writer);\r
 258                         }\r
 259                 }\r
 260                 \r
 261                 private void DoHorizontalRendering(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl)\r
 262                 {\r
 263                         \r
 264                 }\r
 265         }\r
 266 }\r