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

   1
   2 //
   3 // Permission is hereby granted, free of charge, to any person obtaining
   4 // a copy of this software and associated documentation files (the
   5 // "Software"), to deal in the Software without restriction, including
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   8 // permit persons to whom the Software is furnished to do so, subject to
   9 // the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be
  12 // included in all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  18 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  19 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  20 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22 /**\r
  23  * Namespace: System.Web.UI.WebControls\r
  24  * Class:     RepeatInfo\r
  25  *\r
  26  * Author:  Gaurav Vaish\r
  27  * Maintainer: gvaish@iitk.ac.in\r
  28  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>\r
  29  * Implementation: yes\r
  30  * Status:  100%\r
  31  *\r
  32  * (C) Gaurav Vaish (2002)\r
  33  */\r
  34 \r
  35 using System;\r
  36 using System.Globalization;\r
  37 using System.Web;\r
  38 using System.Web.UI;\r
  39 \r
  40 namespace System.Web.UI.WebControls\r
  41 {\r
  42         public sealed class RepeatInfo\r
  43         {\r
  44                 private bool            outerTableImp;\r
  45                 private int             repeatColumns;\r
  46                 private RepeatDirection repeatDirection;\r
  47                 private RepeatLayout    repeatLayout;\r
  48 \r
  49                 public RepeatInfo()\r
  50                 {\r
  51                         outerTableImp   = false;\r
  52                         repeatColumns   = 0;\r
  53                         repeatDirection = RepeatDirection.Vertical;\r
  54                         repeatLayout    = RepeatLayout.Table;\r
  55                 }\r
  56 \r
  57                 public bool OuterTableImplied\r
  58                 {\r
  59                         get\r
  60                         {\r
  61                                 return outerTableImp;\r
  62                         }\r
  63                         set\r
  64                         {\r
  65                                 outerTableImp = value;\r
  66                         }\r
  67                 }\r
  68 \r
  69                 public int RepeatColumns\r
  70                 {\r
  71                         get\r
  72                         {\r
  73                                 return repeatColumns;\r
  74                         }\r
  75                         set\r
  76                         {\r
  77                                 repeatColumns = value;\r
  78                         }\r
  79                 }\r
  80 \r
  81                 public RepeatDirection RepeatDirection\r
  82                 {\r
  83                         get\r
  84                         {\r
  85                                 return repeatDirection;\r
  86                         }\r
  87                         set\r
  88                         {\r
  89                                 if(!Enum.IsDefined(typeof(RepeatDirection), value))\r
  90                                         throw new ArgumentException();\r
  91                                 repeatDirection = value;\r
  92                         }\r
  93                 }\r
  94 \r
  95                 public RepeatLayout RepeatLayout\r
  96                 {\r
  97                         get\r
  98                         {\r
  99                                 return repeatLayout;\r
 100                         }\r
 101                         set\r
 102                         {\r
 103                                 if(!Enum.IsDefined(typeof(RepeatLayout), value))\r
 104                                         throw new ArgumentException();\r
 105                                 repeatLayout = value;\r
 106                         }\r
 107                 }\r
 108 \r
 109                 public void RenderRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl)\r
 110                 {\r
 111                         if(RepeatDirection == RepeatDirection.Vertical)\r
 112                         {\r
 113                                 DoVerticalRendering(writer, user, controlStyle, baseControl);\r
 114                         } else\r
 115                         {\r
 116                                 DoHorizontalRendering(writer, user, controlStyle, baseControl);\r
 117                         }\r
 118                 }\r
 119 \r
 120                 private void DoVerticalRendering(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl)\r
 121                 {\r
 122                         int total = user.RepeatedItemCount;\r
 123                         int colsCount;\r
 124                         int rowsCount;\r
 125                         if(repeatColumns == 0 || repeatColumns==1)\r
 126                         {\r
 127                                 colsCount = 1;\r
 128                                 rowsCount = total;\r
 129                         } else\r
 130                         {\r
 131                                 colsCount = repeatColumns;\r
 132                                 rowsCount = (total + repeatColumns - 1) / repeatColumns;\r
 133                                 if(rowsCount ==0 && total != 0)\r
 134                                 {\r
 135                                         rowsCount = 1;\r
 136                                         colsCount = total;\r
 137                                 }\r
 138                         }\r
 139                         WebControl ctrl = null;\r
 140                         bool isTable = false;\r
 141                         bool hasSeps = user.HasSeparators;\r
 142                         if(!outerTableImp)\r
 143                         {\r
 144                                 if(RepeatLayout == RepeatLayout.Table)\r
 145                                 {\r
 146                                         ctrl = new Table();\r
 147                                         isTable = true;\r
 148                                 } else\r
 149                                 {\r
 150                                         ctrl = new WebControl(HtmlTextWriterTag.Span);\r
 151                                 }\r
 152                         }\r
 153 \r
 154                         if(ctrl != null)\r
 155                         {\r
 156                                 ctrl.ID = baseControl.ClientID;\r
 157                                 ctrl.CopyBaseAttributes(baseControl);\r
 158                                 ctrl.ApplyStyle(controlStyle);\r
 159                                 ctrl.RenderBeginTag(writer);\r
 160                         }\r
 161 \r
 162                         Style itemStyle;\r
 163                         int colSpan = 0;\r
 164                         if(user.HasHeader)\r
 165                         {\r
 166                                 if(isTable)\r
 167                                 {\r
 168                                         writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 169                                         if(colsCount != 1)\r
 170                                         {\r
 171                                                 colSpan = colsCount;\r
 172                                                 if(hasSeps)\r
 173                                                         colSpan += colsCount;\r
 174                                                 writer.AddAttribute(HtmlTextWriterAttribute.Colspan, colSpan.ToString(NumberFormatInfo.InvariantInfo));\r
 175                                         }\r
 176                                         itemStyle = user.GetItemStyle(ListItemType.Header, -1);\r
 177                                         if(itemStyle != null)\r
 178                                         {\r
 179                                                 itemStyle.AddAttributesToRender(writer);\r
 180                                         }\r
 181                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 182                                 }\r
 183                                 user.RenderItem(ListItemType.Header, -1, this, writer);\r
 184                                 if(isTable)\r
 185                                 {\r
 186                                         writer.RenderEndTag();\r
 187                                         writer.RenderEndTag();\r
 188                                 } else\r
 189                                 {\r
 190                                         if(!outerTableImp)\r
 191                                         {\r
 192                                                 writer.WriteFullBeginTag("br");\r
 193                                         }\r
 194                                 }\r
 195                         }\r
 196 \r
 197                         int rowIndex = 0;\r
 198                         int colIndex = 0;\r
 199                         int index = 0;\r
 200                         int diff = colsCount - (rowsCount*colsCount - total);\r
 201                         \r
 202                         while(rowIndex < rowsCount)\r
 203                         {\r
 204                                 if(isTable)\r
 205                                         writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 206                                 colIndex = 0;\r
 207                                 while(colIndex < colsCount)\r
 208                                 {\r
 209                                         if (rowIndex == rowsCount-1 && colIndex >= diff)\r
 210                                                 break;\r
 211                                         \r
 212                                         if (colIndex < diff)\r
 213                                                 index = rowIndex + colIndex * rowsCount;\r
 214                                         else\r
 215                                                 index = rowIndex + colIndex * (rowsCount-1) + diff;\r
 216 \r
 217                                         if(index < total)\r
 218                                         {\r
 219                                                 if(isTable)\r
 220                                                 {\r
 221                                                         itemStyle = user.GetItemStyle(ListItemType.Item, index);\r
 222                                                         if(itemStyle != null)\r
 223                                                         {\r
 224                                                                 itemStyle.AddAttributesToRender(writer);\r
 225                                                         }\r
 226                                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 227                                                 }\r
 228                                                 user.RenderItem(ListItemType.Item, index, this, writer);\r
 229                                                 if(isTable)\r
 230                                                         writer.RenderEndTag();\r
 231                                                 if(hasSeps && index != (total - 1))\r
 232                                                 {\r
 233                                                         if(isTable && colsCount == 1)\r
 234                                                         {\r
 235                                                                 writer.RenderEndTag();\r
 236                                                                 writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 237                                                         } else\r
 238                                                         {\r
 239                                                                 writer.WriteFullBeginTag("br");\r
 240                                                         }\r
 241                                                         if(isTable)\r
 242                                                         {\r
 243                                                                 itemStyle = user.GetItemStyle(ListItemType.Separator, index);\r
 244                                                                 if(itemStyle != null)\r
 245                                                                         itemStyle.AddAttributesToRender(writer);\r
 246                                                                 writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 247                                                         }\r
 248                                                         user.RenderItem(ListItemType.Separator, index, this, writer);\r
 249                                                         if(isTable)\r
 250                                                                 writer.RenderEndTag();\r
 251                                                 }\r
 252                                         }\r
 253                                         colIndex++;\r
 254                                 }\r
 255                                 if(isTable)\r
 256                                         writer.RenderEndTag();\r
 257                                 else\r
 258                                         if((rowIndex != (rowsCount - 1) || user.HasFooter) && !outerTableImp)\r
 259                                                 writer.WriteFullBeginTag("br");\r
 260                                 rowIndex++;\r
 261                         }\r
 262                         if(user.HasFooter)\r
 263                         {\r
 264                                 if(isTable)\r
 265                                 {\r
 266                                         writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 267                                         if(colsCount != 1)\r
 268                                         {\r
 269                                                 writer.AddAttribute(HtmlTextWriterAttribute.Colspan, colSpan.ToString(NumberFormatInfo.InvariantInfo));\r
 270                                         }\r
 271                                         itemStyle = user.GetItemStyle(ListItemType.Footer, -1);\r
 272                                         if(itemStyle != null)\r
 273                                         {\r
 274                                                 itemStyle.AddAttributesToRender(writer);\r
 275                                         }\r
 276                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 277                                 }\r
 278                                 user.RenderItem(ListItemType.Footer, -1, this, writer);\r
 279                                 if(isTable)\r
 280                                 {\r
 281                                         writer.RenderEndTag();\r
 282                                         writer.RenderEndTag();\r
 283                                 }\r
 284                         }\r
 285                         if(ctrl != null)\r
 286                         {\r
 287                                 ctrl.RenderEndTag(writer);\r
 288                         }\r
 289                 }\r
 290 \r
 291                 private void DoHorizontalRendering (HtmlTextWriter writer,\r
 292                                                     IRepeatInfoUser user,\r
 293                                                     Style controlStyle,\r
 294                                                     WebControl baseControl)\r
 295                 {\r
 296                         /* Based on DoVerticalRendering */\r
 297                         int total = user.RepeatedItemCount;\r
 298                         int colsCount = 0;\r
 299                         int rowsCount = 0;\r
 300                         WebControl ctrl = null;\r
 301                         bool isTable = true;\r
 302                         bool hasSeps = user.HasSeparators;\r
 303                         if (!outerTableImp){\r
 304                                 isTable = (RepeatLayout == RepeatLayout.Table);\r
 305                                 ctrl = (isTable) ? new Table () : new WebControl (HtmlTextWriterTag.Span);\r
 306                                 ctrl.ID = baseControl.ClientID;\r
 307                                 ctrl.CopyBaseAttributes (baseControl);\r
 308                                 ctrl.ApplyStyle (controlStyle);\r
 309                                 ctrl.RenderBeginTag (writer);\r
 310                         }\r
 311 \r
 312                         Style itemStyle;\r
 313                         int colSpan = 0;\r
 314                         if (user.HasHeader){\r
 315                                 if (isTable){\r
 316                                         writer.RenderBeginTag (HtmlTextWriterTag.Tr);\r
 317                                         if (colsCount != 1){\r
 318                                                 colSpan = colsCount;\r
 319                                                 if (hasSeps)\r
 320                                                         colSpan += colsCount;\r
 321                                                 writer.AddAttribute (HtmlTextWriterAttribute.Colspan,\r
 322                                                      colSpan.ToString (NumberFormatInfo.InvariantInfo));\r
 323                                         }\r
 324                                         itemStyle = user.GetItemStyle (ListItemType.Header, -1);\r
 325                                         if (itemStyle != null)\r
 326                                                 itemStyle.AddAttributesToRender (writer);\r
 327                                         writer.RenderBeginTag (HtmlTextWriterTag.Td);\r
 328                                 }\r
 329 \r
 330                                 user.RenderItem (ListItemType.Header, -1, this, writer);\r
 331                                 \r
 332                                 if (isTable){\r
 333                                         writer.RenderEndTag();\r
 334                                         writer.RenderEndTag();\r
 335                                 } else if (repeatColumns < user.RepeatedItemCount)\r
 336                                                 writer.WriteFullBeginTag ("br");\r
 337                         }\r
 338 \r
 339                         for (int index = 0; index < total; index++){\r
 340                                 if (isTable && index == 0)\r
 341                                         writer.RenderBeginTag (HtmlTextWriterTag.Tr);\r
 342 \r
 343                                 if (isTable){\r
 344                                         itemStyle = user.GetItemStyle (ListItemType.Item, index);\r
 345                                         if (itemStyle != null)\r
 346                                                 itemStyle.AddAttributesToRender(writer);\r
 347                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 348                                 }\r
 349 \r
 350                                 user.RenderItem(ListItemType.Item, index, this, writer);\r
 351                                 if (isTable)\r
 352                                         writer.RenderEndTag ();\r
 353 \r
 354                                 if (hasSeps && index != (total - 1)){\r
 355                                         if (isTable){\r
 356                                                 itemStyle = user.GetItemStyle (ListItemType.Separator, index);\r
 357                                                 if (itemStyle != null)\r
 358                                                         itemStyle.AddAttributesToRender (writer);\r
 359                                                 writer.RenderBeginTag (HtmlTextWriterTag.Td);\r
 360                                         }\r
 361                                         user.RenderItem (ListItemType.Separator, index, this, writer);\r
 362                                         if (isTable)\r
 363                                                 writer.RenderEndTag ();\r
 364                                 }\r
 365 \r
 366                                 colsCount++;\r
 367                                 if (colsCount == repeatColumns) {\r
 368                                         if (isTable) {\r
 369                                                 writer.RenderEndTag ();\r
 370                                                 writer.RenderBeginTag (HtmlTextWriterTag.Tr);\r
 371                                         }\r
 372                                         else if (rowsCount < total)\r
 373                                                 writer.WriteFullBeginTag ("br");\r
 374                                         colsCount = 0;\r
 375                                 }\r
 376 \r
 377                                 if (index == (total - 1)) {\r
 378                                         if (isTable)\r
 379                                                 writer.RenderEndTag ();\r
 380                                         else if (rowsCount < total)\r
 381                                                 writer.WriteFullBeginTag ("br");\r
 382                                 }\r
 383                         }\r
 384 \r
 385                         if (user.HasFooter){\r
 386                                 if (isTable){\r
 387                                         writer.RenderBeginTag (HtmlTextWriterTag.Tr);\r
 388                                         if (colsCount != 1)\r
 389                                                 writer.AddAttribute (HtmlTextWriterAttribute.Colspan,\r
 390                                                         colSpan.ToString(NumberFormatInfo.InvariantInfo));\r
 391 \r
 392                                         itemStyle = user.GetItemStyle (ListItemType.Footer, -1);\r
 393                                         if(itemStyle != null)\r
 394                                                 itemStyle.AddAttributesToRender (writer);\r
 395                                         writer.RenderBeginTag (HtmlTextWriterTag.Td);\r
 396                                 }\r
 397                                 user.RenderItem (ListItemType.Footer, -1, this, writer);\r
 398                                 if (isTable){\r
 399                                         writer.RenderEndTag ();\r
 400                                         writer.RenderEndTag ();\r
 401                                 }\r
 402                         }\r
 403 \r
 404                         if (ctrl != null)\r
 405                                 ctrl.RenderEndTag(writer);\r
 406                 }\r
 407         }\r
 408 }\r