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

   1 /**\r
   2  * Namespace: System.Web.UI.WebControls\r
   3  * Class:     TableStyle\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:  100%\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 class TableStyle : Style\r
  21         {\r
  22                 private static int IMAGE_URL = (0x01 << 16);\r
  23                 private static int CELL_PADD = (0x01 << 17);\r
  24                 private static int CELL_SPAC = (0x01 << 18);\r
  25                 private static int GRID_LINE = (0x01 << 19);\r
  26                 private static int HOR_ALIGN = (0x01 << 20);\r
  27                 \r
  28                 public TableStyle(): base()\r
  29                 {\r
  30                 }\r
  31                 \r
  32                 public TableStyle(StateBag bag): base(bag)\r
  33                 {\r
  34                 }\r
  35                 \r
  36                 public virtual string BackImageUrl\r
  37                 {\r
  38                         get\r
  39                         {\r
  40                                 if(IsSet(IMAGE_URL))\r
  41                                         return (string)(ViewState["BackImageUrl"]);\r
  42                                 return String.Empty;\r
  43                         }\r
  44                         set\r
  45                         {\r
  46                                 if(value == null)\r
  47                                         throw new ArgumentNullException("BackImageUrl");\r
  48                                 ViewState["BackImageUrl"] = value;\r
  49                                 Set(IMAGE_URL);\r
  50                         }\r
  51                 }\r
  52                 \r
  53                 public virtual int CellPadding\r
  54                 {\r
  55                         get\r
  56                         {\r
  57                                 if(IsSet(CELL_PADD))\r
  58                                         return (int)(ViewState["CellPadding"]);\r
  59                                 return -1;\r
  60                         }\r
  61                         set\r
  62                         {\r
  63                                 if(value < -1)\r
  64                                         throw new ArgumentOutOfRangeException("CellPadding");\r
  65                                 ViewState["CellPadding"] = value;\r
  66                                 Set(CELL_PADD);\r
  67                         }\r
  68                 }\r
  69                 \r
  70                 public virtual int CellSpacing\r
  71                 {\r
  72                         get\r
  73                         {\r
  74                                 if(IsSet(CELL_SPAC))\r
  75                                         return (int)(ViewState["CellSpacing"]);\r
  76                                 return -1;\r
  77                         }\r
  78                         set\r
  79                         {\r
  80                                 if(value < -1)\r
  81                                         throw new ArgumentOutOfRangeException("CellSpacing");\r
  82                                 ViewState["CellSpacing"] = value;\r
  83                                 Set(CELL_SPAC);\r
  84                         }\r
  85                 }\r
  86                 \r
  87                 public virtual GridLines GridLines\r
  88                 {\r
  89                         get\r
  90                         {\r
  91                                 if(IsSet(GRID_LINE))\r
  92                                         return (string)(ViewState["GridLines"]);\r
  93                                 return GridLines.Both;\r
  94                         }\r
  95                         set\r
  96                         {\r
  97                                 if(!Enum.IsDefined(typeof(GridLines), value))\r
  98                                         throw new ArgumentException();\r
  99                                 ViewState["GridLines"] = value;\r
 100                                 Set(GRID_LINE);\r
 101                         }\r
 102                 }\r
 103                 \r
 104                 public virtual HorizontalAlign HorizontalAlign\r
 105                 {\r
 106                         get\r
 107                         {\r
 108                                 if(IsSet(HOR_ALIGN))\r
 109                                         return (string)(ViewState["HorizontalAlign"]);\r
 110                                 return HorizontalAlign.NotSet;\r
 111                         }\r
 112                         set\r
 113                         {\r
 114                                 if(!Enum.IsDefined(typeof(HorizontalAlign), value))\r
 115                                         throw new ArgumentException();\r
 116                                 ViewState["HorizontalAlign"] = value;\r
 117                                 Set(HOR_ALIGN);\r
 118                         }\r
 119                 }\r
 120                 \r
 121                 public override void AddAttributesToRender(HtmlTextWriter writer, WebControl owner)\r
 122                 {\r
 123                         base.AddAttributesToRender(writer, owner);\r
 124                         if(BackImageUrl.Length > 0)\r
 125                         {\r
 126                                 writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundImage, "url(" + ResolveUrl(BackImageUrl) + ")");\r
 127                         }\r
 128                         if(CellSpacing >= 0)\r
 129                         {\r
 130                                 writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing, CellSpacing.ToString(NumerFormatInfo.InvariantInfo));\r
 131                         }\r
 132                         if(CellPadding >= 0)\r
 133                         {\r
 134                                 writer.AddAttribute(HtmlTextWriterAttribute.Cellpadding, CellPadding.ToString(NumerFormatInfo.InvariantInfo));\r
 135                         }\r
 136                         if(HorizontalAlign != HorizontalAlign.NotSet)\r
 137                         {\r
 138                                 writer.AddAttribute(HtmlTextWriterAttribute.Align, Enum.Format(typeof(HorizontalAlign), HorizontalAlign, "G"));\r
 139                         }\r
 140                         string gd = "";\r
 141                         switch(GridLines)\r
 142                         {\r
 143                                 case GridLines.None:       gd = "";\r
 144                                                            break;\r
 145                                 case GridLines.Horizontal: gd = "cols";\r
 146                                                            break;\r
 147                                 case GridLines.Vertical:   gd = "rows";\r
 148                                                            break;\r
 149                                 case GridLines.Both:       gd = "all";\r
 150                                                            break;\r
 151                         }\r
 152                         writer.AddAttribute(HtmlTextWriterAttribute.Rules, gd);\r
 153                 }\r
 154                 \r
 155                 private static int IMAGE_URL = (0x01 << 16);\r
 156                 private static int CELL_PADD = (0x01 << 17);\r
 157                 private static int CELL_SPAC = (0x01 << 18);\r
 158                 private static int GRID_LINE = (0x01 << 19);\r
 159                 private static int HOR_ALIGN = (0x01 << 20);\r
 160                 \r
 161                 public override void CopyFrom(Style s)\r
 162                 {\r
 163                         if(s != null && s is TableStyle && !s.IsEmpty)\r
 164                         {\r
 165                                 base.CopyFrom(s);\r
 166                                 TableStyle from = (TableStyle)s;\r
 167                                 if(from.IsSet(HOR_ALIGN))\r
 168                                 {\r
 169                                         HorizontalAlign = from.HorizontalAlign;\r
 170                                 }\r
 171                                 if(from.IsSet(IMAGE_URL))\r
 172                                 {\r
 173                                         BackImageUrl = from.BackImageUrl;\r
 174                                 }\r
 175                                 if(from.IsSet(CELL_PADD))\r
 176                                 {\r
 177                                         CellPadding = from.CellPadding;\r
 178                                 }\r
 179                                 if(from.IsSet(CELL_SPAC))\r
 180                                 {\r
 181                                         CellSpacing = from.CellSpacing;\r
 182                                 }\r
 183                                 if(from.IsSet(GRID_LINE))\r
 184                                 {\r
 185                                         GridLines = from.GridLines;\r
 186                                 }\r
 187                         }\r
 188                 }\r
 189                 \r
 190                 public override void MergeWith(Style s)\r
 191                 {\r
 192                         if(s != null && s is TableStyle && !s.IsEmpty)\r
 193                         {\r
 194                                 base.MergeWith(s);\r
 195                                 TableStyle with = (TableStyle)s;\r
 196                                 if(from.IsSet(HOR_ALIGN) && IsSet(HOR_ALIGN))\r
 197                                 {\r
 198                                         HorizontalAlign = with.HorizontalAlign;\r
 199                                 }\r
 200                                 if(from.IsSet(IMAGE_URL) && IsSet(IMAGE_URL))\r
 201                                 {\r
 202                                         BackImageUrl = with.BackImageUrl;\r
 203                                 }\r
 204                                 if(from.IsSet(CELL_PADD) && IsSet(CELLL_PADD))\r
 205                                 {\r
 206                                         CellPadding = with.CellPadding;\r
 207                                 }\r
 208                                 if(from.IsSet(CELL_SPAC) && IsSet(CELL_SPAC))\r
 209                                 {\r
 210                                         CellSpacing = with.CellSpacing;\r
 211                                 }\r
 212                                 if(from.IsSet(GRID_LINE) && IsSet(GRID_LINE))\r
 213                                 {\r
 214                                         GridLines = with.GridLines;\r
 215                                 }\r
 216                         }\r
 217                 }\r
 218                 \r
 219                 public override void Reset()\r
 220                 {\r
 221                         if(IsSet(IMAGE_URL))\r
 222                                 ViewState.Remove("BackImageUrl");\r
 223                         if(IsSet(HOR_ALIGN))\r
 224                                 ViewState.Remove("HorizontalAlign");\r
 225                         if(IsSet(CELL_PADD))\r
 226                                 ViewState.Remove("CellPadding");\r
 227                         if(IsSet(CELL_SPAC))\r
 228                                 ViewState.Remove("CellSpacing");\r
 229                         if(IsSet(GRID_LINE))\r
 230                                 ViewState.Remove("GridLines");\r
 231                         base.Reset();\r
 232                 }\r
 233         }\r
 234 }\r