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
   6 // without limitation the rights to use, copy, modify, merge, publish,
   7 // distribute, sublicense, and/or sell copies of the Software, and to
   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 #if NET_1_1\r
  49                 private string caption = "";\r
  50                 private TableCaptionAlign captionAlign = TableCaptionAlign.NotSet;\r
  51                 private  bool useAccessibleHeader = false;\r
  52 #endif\r
  53 \r
  54                 public RepeatInfo()\r
  55                 {\r
  56                         outerTableImp   = false;\r
  57                         repeatColumns   = 0;\r
  58                         repeatDirection = RepeatDirection.Vertical;\r
  59                         repeatLayout    = RepeatLayout.Table;\r
  60                 }\r
  61 \r
  62                 public bool OuterTableImplied\r
  63                 {\r
  64                         get\r
  65                         {\r
  66                                 return outerTableImp;\r
  67                         }\r
  68                         set\r
  69                         {\r
  70                                 outerTableImp = value;\r
  71                         }\r
  72                 }\r
  73 \r
  74                 public int RepeatColumns\r
  75                 {\r
  76                         get\r
  77                         {\r
  78                                 return repeatColumns;\r
  79                         }\r
  80                         set\r
  81                         {\r
  82                                 repeatColumns = value;\r
  83                         }\r
  84                 }\r
  85 \r
  86                 public RepeatDirection RepeatDirection\r
  87                 {\r
  88                         get\r
  89                         {\r
  90                                 return repeatDirection;\r
  91                         }\r
  92                         set\r
  93                         {\r
  94                                 if(!Enum.IsDefined(typeof(RepeatDirection), value))\r
  95                                         throw new ArgumentException();\r
  96                                 repeatDirection = value;\r
  97                         }\r
  98                 }\r
  99 \r
 100                 public RepeatLayout RepeatLayout\r
 101                 {\r
 102                         get\r
 103                         {\r
 104                                 return repeatLayout;\r
 105                         }\r
 106                         set\r
 107                         {\r
 108                                 if(!Enum.IsDefined(typeof(RepeatLayout), value))\r
 109                                         throw new ArgumentException();\r
 110                                 repeatLayout = value;\r
 111                         }\r
 112                 }\r
 113 \r
 114                 public void RenderRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl)\r
 115                 {\r
 116                         if(RepeatDirection == RepeatDirection.Vertical)\r
 117                         {\r
 118                                 DoVerticalRendering(writer, user, controlStyle, baseControl);\r
 119                         } else\r
 120                         {\r
 121                                 DoHorizontalRendering(writer, user, controlStyle, baseControl);\r
 122                         }\r
 123                 }\r
 124 \r
 125                 private void DoVerticalRendering(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl)\r
 126                 {\r
 127                         int total = user.RepeatedItemCount;\r
 128                         int colsCount;\r
 129                         int rowsCount;\r
 130                         if(repeatColumns == 0 || repeatColumns==1)\r
 131                         {\r
 132                                 colsCount = 1;\r
 133                                 rowsCount = total;\r
 134                         } else\r
 135                         {\r
 136                                 colsCount = repeatColumns;\r
 137                                 rowsCount = (total + repeatColumns - 1) / repeatColumns;\r
 138                                 if(rowsCount ==0 && total != 0)\r
 139                                 {\r
 140                                         rowsCount = 1;\r
 141                                         colsCount = total;\r
 142                                 }\r
 143                         }\r
 144                         WebControl ctrl = null;\r
 145                         bool isTable = false;\r
 146                         bool hasSeps = user.HasSeparators;\r
 147                         if(!outerTableImp)\r
 148                         {\r
 149                                 if(RepeatLayout == RepeatLayout.Table)\r
 150                                 {\r
 151                                         ctrl = new Table();\r
 152 #if NET_1_1\r
 153                                         if (Caption.Length != 0)\r
 154                                         {\r
 155                                                 ((Table) ctrl).CaptionAlign = CaptionAlign;\r
 156                                                 ((Table) ctrl).Caption = Caption;                                               \r
 157                                         }\r
 158 #endif\r
 159                                         isTable = true;\r
 160                                 } else\r
 161                                 {\r
 162                                         ctrl = new WebControl(HtmlTextWriterTag.Span);\r
 163                                 }\r
 164                         }\r
 165 \r
 166                         if(ctrl != null)\r
 167                         {\r
 168                                 ctrl.ID = baseControl.ClientID;\r
 169                                 ctrl.CopyBaseAttributes(baseControl);\r
 170                                 ctrl.ApplyStyle(controlStyle);\r
 171                                 ctrl.RenderBeginTag(writer);\r
 172                         }\r
 173 \r
 174                         Style itemStyle;\r
 175                         int colSpan = 0;\r
 176                         if(user.HasHeader)\r
 177                         {\r
 178                                 if(isTable)\r
 179                                 {\r
 180                                         writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 181                                         if(colsCount != 1)\r
 182                                         {\r
 183                                                 colSpan = colsCount;\r
 184                                                 if(hasSeps)\r
 185                                                         colSpan += colsCount;\r
 186                                                 writer.AddAttribute(HtmlTextWriterAttribute.Colspan, colSpan.ToString(NumberFormatInfo.InvariantInfo));\r
 187                                         }\r
 188 #if NET_1_1\r
 189                                         if (UseAccessibleHeader)                                        \r
 190                                                 writer.AddAttribute("scope", "col", false);\r
 191  \r
 192 #endif\r
 193                                         itemStyle = user.GetItemStyle(ListItemType.Header, -1);\r
 194                                         if(itemStyle != null)\r
 195                                         {\r
 196                                                 itemStyle.AddAttributesToRender(writer);\r
 197                                         }\r
 198 #if NET_1_1\r
 199                                         if (UseAccessibleHeader)\r
 200                                                 writer.RenderBeginTag(HtmlTextWriterTag.Th);\r
 201                                         else\r
 202                                                 writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 203 #else\r
 204                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 205 #endif\r
 206                                 }\r
 207                                 user.RenderItem(ListItemType.Header, -1, this, writer);\r
 208                                 if(isTable)\r
 209                                 {\r
 210                                         writer.RenderEndTag();\r
 211                                         writer.RenderEndTag();\r
 212                                 } else\r
 213                                 {\r
 214                                         if(!outerTableImp)\r
 215                                         {\r
 216                                                 writer.WriteFullBeginTag("br");\r
 217                                         }\r
 218                                 }\r
 219                         }\r
 220 \r
 221                         int rowIndex = 0;\r
 222                         int colIndex = 0;\r
 223                         int index = 0;\r
 224                         int diff = colsCount - (rowsCount*colsCount - total);\r
 225                         \r
 226                         while(rowIndex < rowsCount)\r
 227                         {\r
 228                                 if(isTable)\r
 229                                         writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 230                                 colIndex = 0;\r
 231                                 while(colIndex < colsCount)\r
 232                                 {\r
 233                                         if (rowIndex == rowsCount-1 && colIndex >= diff)\r
 234                                                 break;\r
 235                                         \r
 236                                         if (colIndex < diff)\r
 237                                                 index = rowIndex + colIndex * rowsCount;\r
 238                                         else\r
 239                                                 index = rowIndex + colIndex * (rowsCount-1) + diff;\r
 240 \r
 241                                         if(index < total)\r
 242                                         {\r
 243                                                 if(isTable)\r
 244                                                 {\r
 245                                                         itemStyle = user.GetItemStyle(ListItemType.Item, index);\r
 246                                                         if(itemStyle != null)\r
 247                                                         {\r
 248                                                                 itemStyle.AddAttributesToRender(writer);\r
 249                                                         }\r
 250                                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 251                                                 }\r
 252                                                 user.RenderItem(ListItemType.Item, index, this, writer);\r
 253                                                 if(isTable)\r
 254                                                         writer.RenderEndTag();\r
 255                                                 if(hasSeps && index != (total - 1))\r
 256                                                 {\r
 257                                                         if(isTable && colsCount == 1)\r
 258                                                         {\r
 259                                                                 writer.RenderEndTag();\r
 260                                                                 writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 261                                                         } else\r
 262                                                         {\r
 263                                                                 writer.WriteFullBeginTag("br");\r
 264                                                         }\r
 265                                                         if(isTable)\r
 266                                                         {\r
 267                                                                 itemStyle = user.GetItemStyle(ListItemType.Separator, index);\r
 268                                                                 if(itemStyle != null)\r
 269                                                                         itemStyle.AddAttributesToRender(writer);\r
 270                                                                 writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 271                                                         }\r
 272                                                         user.RenderItem(ListItemType.Separator, index, this, writer);\r
 273                                                         if(isTable)\r
 274                                                                 writer.RenderEndTag();\r
 275                                                 }\r
 276                                         }\r
 277                                         colIndex++;\r
 278                                 }\r
 279                                 if(isTable)\r
 280                                         writer.RenderEndTag();\r
 281                                 else\r
 282                                         if((rowIndex != (rowsCount - 1) || user.HasFooter) && !outerTableImp)\r
 283                                                 writer.WriteFullBeginTag("br");\r
 284                                 rowIndex++;\r
 285                         }\r
 286                         if(user.HasFooter)\r
 287                         {\r
 288                                 if(isTable)\r
 289                                 {\r
 290                                         writer.RenderBeginTag(HtmlTextWriterTag.Tr);\r
 291                                         if(colsCount != 1)\r
 292                                         {\r
 293                                                 writer.AddAttribute(HtmlTextWriterAttribute.Colspan, colSpan.ToString(NumberFormatInfo.InvariantInfo));\r
 294                                         }\r
 295                                         itemStyle = user.GetItemStyle(ListItemType.Footer, -1);\r
 296                                         if(itemStyle != null)\r
 297                                         {\r
 298                                                 itemStyle.AddAttributesToRender(writer);\r
 299                                         }\r
 300                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 301                                 }\r
 302                                 user.RenderItem(ListItemType.Footer, -1, this, writer);\r
 303                                 if(isTable)\r
 304                                 {\r
 305                                         writer.RenderEndTag();\r
 306                                         writer.RenderEndTag();\r
 307                                 }\r
 308                         }\r
 309                         if(ctrl != null)\r
 310                         {\r
 311                                 ctrl.RenderEndTag(writer);\r
 312                         }\r
 313                 }\r
 314 \r
 315                 private void DoHorizontalRendering (HtmlTextWriter writer,\r
 316                                                     IRepeatInfoUser user,\r
 317                                                     Style controlStyle,\r
 318                                                     WebControl baseControl)\r
 319                 {\r
 320                         /* Based on DoVerticalRendering */\r
 321                         int total = user.RepeatedItemCount;\r
 322                         int colsCount = 0;\r
 323                         int rowsCount = 0;\r
 324                         WebControl ctrl = null;\r
 325                         bool isTable = true;\r
 326                         bool hasSeps = user.HasSeparators;\r
 327                         if (!outerTableImp){\r
 328                                 isTable = (RepeatLayout == RepeatLayout.Table);\r
 329                                 if (isTable)\r
 330                                 {\r
 331                                         ctrl = new Table ();\r
 332 #if NET_1_1\r
 333                                         if (Caption.Length != 0)\r
 334                                         {\r
 335                                                 ((Table) ctrl).CaptionAlign = CaptionAlign;\r
 336                                                 ((Table) ctrl).Caption = Caption; \r
 337                                         }\r
 338 #endif\r
 339                                 }\r
 340                                 else \r
 341                                         ctrl = new WebControl (HtmlTextWriterTag.Span);\r
 342                                 ctrl.ID = baseControl.ClientID;\r
 343                                 ctrl.CopyBaseAttributes (baseControl);\r
 344                                 ctrl.ApplyStyle (controlStyle);\r
 345                                 ctrl.RenderBeginTag (writer);\r
 346                         }\r
 347 \r
 348                         Style itemStyle;\r
 349                         int colSpan = 0;\r
 350                         if (user.HasHeader){\r
 351                                 if (isTable){\r
 352                                         writer.RenderBeginTag (HtmlTextWriterTag.Tr);\r
 353                                         if (colsCount != 1){\r
 354                                                 colSpan = colsCount;\r
 355                                                 if (hasSeps)\r
 356                                                         colSpan += colsCount;\r
 357                                                 writer.AddAttribute (HtmlTextWriterAttribute.Colspan,\r
 358                                                      colSpan.ToString (NumberFormatInfo.InvariantInfo));\r
 359                                         }\r
 360 #if NET_1_1\r
 361                                         if (UseAccessibleHeader)\r
 362                                                 writer.AddAttribute("scope", "col", false);\r
 363 #endif\r
 364                                         itemStyle = user.GetItemStyle (ListItemType.Header, -1);\r
 365                                         if (itemStyle != null)\r
 366                                                 itemStyle.AddAttributesToRender (writer);\r
 367 #if NET_1_1\r
 368                                         if (UseAccessibleHeader)\r
 369                                                 writer.RenderBeginTag(HtmlTextWriterTag.Th);\r
 370                                         else\r
 371                                                 writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 372 #else\r
 373                                         writer.RenderBeginTag (HtmlTextWriterTag.Td);\r
 374 #endif\r
 375                                 }\r
 376 \r
 377                                 user.RenderItem (ListItemType.Header, -1, this, writer);\r
 378                                 \r
 379                                 if (isTable){\r
 380                                         writer.RenderEndTag();\r
 381                                         writer.RenderEndTag();\r
 382                                 } else if (repeatColumns < user.RepeatedItemCount)\r
 383                                                 writer.WriteFullBeginTag ("br");\r
 384                         }\r
 385 \r
 386                         for (int index = 0; index < total; index++){\r
 387                                 if (isTable && index == 0)\r
 388                                         writer.RenderBeginTag (HtmlTextWriterTag.Tr);\r
 389 \r
 390                                 if (isTable){\r
 391                                         itemStyle = user.GetItemStyle (ListItemType.Item, index);\r
 392                                         if (itemStyle != null)\r
 393                                                 itemStyle.AddAttributesToRender(writer);\r
 394                                         writer.RenderBeginTag(HtmlTextWriterTag.Td);\r
 395                                 }\r
 396 \r
 397                                 user.RenderItem(ListItemType.Item, index, this, writer);\r
 398                                 if (isTable)\r
 399                                         writer.RenderEndTag ();\r
 400 \r
 401                                 if (hasSeps && index != (total - 1)){\r
 402                                         if (isTable){\r
 403                                                 itemStyle = user.GetItemStyle (ListItemType.Separator, index);\r
 404                                                 if (itemStyle != null)\r
 405                                                         itemStyle.AddAttributesToRender (writer);\r
 406                                                 writer.RenderBeginTag (HtmlTextWriterTag.Td);\r
 407                                         }\r
 408                                         user.RenderItem (ListItemType.Separator, index, this, writer);\r
 409                                         if (isTable)\r
 410                                                 writer.RenderEndTag ();\r
 411                                 }\r
 412 \r
 413                                 colsCount++;\r
 414                                 if (colsCount == repeatColumns) {\r
 415                                         if (isTable) {\r
 416                                                 writer.RenderEndTag ();\r
 417                                                 writer.RenderBeginTag (HtmlTextWriterTag.Tr);\r
 418                                         }\r
 419                                         else if (rowsCount < total)\r
 420                                                 writer.WriteFullBeginTag ("br");\r
 421                                         colsCount = 0;\r
 422                                 }\r
 423 \r
 424                                 if (index == (total - 1)) {\r
 425                                         if (isTable)\r
 426                                                 writer.RenderEndTag ();\r
 427                                         else if (rowsCount < total)\r
 428                                                 writer.WriteFullBeginTag ("br");\r
 429                                 }\r
 430                         }\r
 431 \r
 432                         if (user.HasFooter){\r
 433                                 if (isTable){\r
 434                                         writer.RenderBeginTag (HtmlTextWriterTag.Tr);\r
 435                                         if (colsCount != 1)\r
 436                                                 writer.AddAttribute (HtmlTextWriterAttribute.Colspan,\r
 437                                                         colSpan.ToString(NumberFormatInfo.InvariantInfo));\r
 438 \r
 439                                         itemStyle = user.GetItemStyle (ListItemType.Footer, -1);\r
 440                                         if(itemStyle != null)\r
 441                                                 itemStyle.AddAttributesToRender (writer);\r
 442                                         writer.RenderBeginTag (HtmlTextWriterTag.Td);\r
 443                                 }\r
 444                                 user.RenderItem (ListItemType.Footer, -1, this, writer);\r
 445                                 if (isTable){\r
 446                                         writer.RenderEndTag ();\r
 447                                         writer.RenderEndTag ();\r
 448                                 }\r
 449                         }\r
 450 \r
 451                         if (ctrl != null)\r
 452                                 ctrl.RenderEndTag(writer);\r
 453                 }\r
 454 \r
 455 #if NET_1_1\r
 456 \r
 457                 public string Caption\r
 458                 {\r
 459                         get {return caption;}\r
 460                         set { caption = value; }\r
 461                 }\r
 462 \r
 463                 public TableCaptionAlign CaptionAlign\r
 464                 {\r
 465                         get {return captionAlign;}\r
 466                         set { captionAlign = value; }\r
 467                 }\r
 468 \r
 469                 \r
 470 \r
 471                 public bool UseAccessibleHeader\r
 472                 {\r
 473                         get {return useAccessibleHeader;}\r
 474                         set { useAccessibleHeader = value; }            \r
 475                 }\r
 476 #endif\r
 477         }\r
 478 }\r