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

   1 //
   2 // System.Web.UI.WebControls.TableStyle.cs
   3 //
   4 // Authors:
   5 //   Gaurav Vaish (gvaish@iitk.ac.in)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) Gaurav Vaish (2002)
   9 // (C) 2003 Andreas Nahr
  10 //\r
  11 \r
  12 using System;
  13 using System.ComponentModel;\r
  14 using System.Globalization;\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
  36                 [DefaultValue (""), Bindable (true), WebCategory ("Appearance")]
  37                 [WebSysDescription ("An Url specifying the background image for the table.")]\r
  38                 public virtual string BackImageUrl\r
  39                 {\r
  40                         get\r
  41                         {\r
  42                                 if(IsSet(IMAGE_URL))\r
  43                                         return (string)(ViewState["BackImageUrl"]);\r
  44                                 return String.Empty;\r
  45                         }\r
  46                         set\r
  47                         {\r
  48                                 if(value == null)\r
  49                                         throw new ArgumentNullException("value");\r
  50                                 ViewState["BackImageUrl"] = value;\r
  51                                 Set(IMAGE_URL);\r
  52                         }\r
  53                 }\r
  54
  55                 [DefaultValue (-1), Bindable (true), WebCategory ("Appearance")]
  56                 [WebSysDescription ("The space left around the borders within a cell.")]\r
  57                 public virtual int CellPadding\r
  58                 {\r
  59                         get\r
  60                         {\r
  61                                 if(IsSet(CELL_PADD))\r
  62                                         return (int)(ViewState["CellPadding"]);\r
  63                                 return -1;\r
  64                         }\r
  65                         set\r
  66                         {\r
  67                                 if(value < -1)\r
  68                                         throw new ArgumentOutOfRangeException("value", "CellPadding value has to be -1 for 'not set' or a value >= 0");\r
  69                                 ViewState["CellPadding"] = value;\r
  70                                 Set(CELL_PADD);\r
  71                         }\r
  72                 }\r
  73
  74                 [DefaultValue (-1), Bindable (true), WebCategory ("Appearance")]
  75                 [WebSysDescription ("The space left between cells.")]\r
  76                 public virtual int CellSpacing\r
  77                 {\r
  78                         get\r
  79                         {\r
  80                                 if(IsSet(CELL_SPAC))\r
  81                                         return (int)(ViewState["CellSpacing"]);\r
  82                                 return -1;\r
  83                         }\r
  84                         set\r
  85                         {\r
  86                                 if(value < -1)\r
  87                                         throw new ArgumentOutOfRangeException("value"," CellSpacing value has to be -1 for 'not set' or a value >= 0");\r
  88                                 ViewState["CellSpacing"] = value;\r
  89                                 Set(CELL_SPAC);\r
  90                         }\r
  91                 }\r
  92
  93                 [DefaultValue (typeof (GridLines), "None"), Bindable (true), WebCategory ("Appearance")]
  94                 [WebSysDescription ("The type of grid that a table uses.")]\r
  95                 public virtual GridLines GridLines\r
  96                 {\r
  97                         get\r
  98                         {\r
  99                                 if(IsSet(GRID_LINE))\r
 100                                         return (GridLines)(ViewState["GridLines"]);\r
 101                                 return GridLines.None;\r
 102                         }\r
 103                         set\r
 104                         {\r
 105                                 if(!Enum.IsDefined(typeof(GridLines), value))\r
 106                                         throw new ArgumentOutOfRangeException("value"," Gridlines value has to be a valid enumeration member");\r
 107                                 ViewState["GridLines"] = value;\r
 108                                 Set(GRID_LINE);\r
 109                         }\r
 110                 }\r
 111
 112                 [DefaultValue (typeof (HorizontalAlign), "NotSet"), Bindable (true), WebCategory ("Layout")]
 113                 [WebSysDescription ("The horizonal alignment of the table.")]\r
 114                 public virtual HorizontalAlign HorizontalAlign\r
 115                 {\r
 116                         get\r
 117                         {\r
 118                                 if(IsSet(HOR_ALIGN))\r
 119                                         return (HorizontalAlign)(ViewState["HorizontalAlign"]);\r
 120                                 return HorizontalAlign.NotSet;\r
 121                         }\r
 122                         set\r
 123                         {\r
 124                                 if(!Enum.IsDefined(typeof(HorizontalAlign), value))\r
 125                                         throw new ArgumentOutOfRangeException("value"," Gridlines value has to be a valid enumeration member");\r
 126                                 ViewState["HorizontalAlign"] = value;\r
 127                                 Set(HOR_ALIGN);\r
 128                         }\r
 129                 }\r
 130 \r
 131                 public override void AddAttributesToRender(HtmlTextWriter writer, WebControl owner)\r
 132                 {\r
 133                         base.AddAttributesToRender(writer, owner);\r
 134                         if(BackImageUrl.Length > 0)\r
 135                         {\r
 136                                 writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundImage, "url(" + owner.ResolveUrl(BackImageUrl) + ")");\r
 137                         }\r
 138                         if(CellSpacing >= 0)\r
 139                         {\r
 140                                 writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing, CellSpacing.ToString(NumberFormatInfo.InvariantInfo));\r
 141                                 if(CellSpacing == 0)
 142                                         writer.AddStyleAttribute(HtmlTextWriterStyle.BorderCollapse, "collapse");
 143
 144                         }\r
 145                         if(CellPadding >= 0)\r
 146                         {\r
 147                                 writer.AddAttribute(HtmlTextWriterAttribute.Cellpadding, CellPadding.ToString(NumberFormatInfo.InvariantInfo));\r
 148                         }\r
 149                         if(HorizontalAlign != HorizontalAlign.NotSet)\r
 150                         {\r
 151                                 writer.AddAttribute(HtmlTextWriterAttribute.Align, Enum.Format(typeof(HorizontalAlign), HorizontalAlign, "G"));\r
 152                         }\r
 153                         string gd = String.Empty;
 154                         switch(GridLines)\r
 155                         {\r
 156                                 case GridLines.None:       break;
 157                                 case GridLines.Horizontal: gd = "rows";\r
 158                                                            break;\r
 159                                 case GridLines.Vertical:   gd = "cols";\r
 160                                                            break;\r
 161                                 case GridLines.Both:       gd = "all";\r
 162                                                            break;\r
 163                         }
 164                                 writer.AddAttribute(HtmlTextWriterAttribute.Rules, gd);
 165                 }
 166
 167                 public override void CopyFrom(Style s)
 168                 {
 169                         if (s == null || s.IsEmpty)
 170                                 return;
 171
 172                         base.CopyFrom (s);
 173                         TableStyle from = s as TableStyle;
 174                         if (from == null)
 175                                 return;
 176
 177                         if (from.IsSet (HOR_ALIGN))
 178                                 HorizontalAlign = from.HorizontalAlign;
 179
 180                         if (from.IsSet (IMAGE_URL))
 181                                 BackImageUrl = from.BackImageUrl;
 182
 183                         if (from.IsSet (CELL_PADD))
 184                                 CellPadding = from.CellPadding;
 185
 186                         if (from.IsSet (CELL_SPAC))
 187                                 CellSpacing = from.CellSpacing;
 188
 189                         if (from.IsSet (GRID_LINE))
 190                                 GridLines = from.GridLines;
 191                 }
 192
 193                 public override void MergeWith(Style s)\r
 194                 {\r
 195                         if(s != null && !s.IsEmpty)\r
 196                         {\r
 197                                 if (IsEmpty) {
 198                                         CopyFrom (s);
 199                                         return;
 200                                 }
 201                                 base.MergeWith(s);\r
 202
 203                                 if (!(s is TableStyle))
 204                                         return;
 205
 206                                 TableStyle with = (TableStyle)s;\r
 207                                 if(with.IsSet(HOR_ALIGN) && !IsSet(HOR_ALIGN))\r
 208                                 {\r
 209                                         HorizontalAlign = with.HorizontalAlign;\r
 210                                 }\r
 211                                 if(with.IsSet(IMAGE_URL) && !IsSet(IMAGE_URL))\r
 212                                 {\r
 213                                         BackImageUrl = with.BackImageUrl;\r
 214                                 }\r
 215                                 if(with.IsSet(CELL_PADD) && !IsSet(CELL_PADD))\r
 216                                 {\r
 217                                         CellPadding = with.CellPadding;\r
 218                                 }\r
 219                                 if(with.IsSet(CELL_SPAC) && !IsSet(CELL_SPAC))\r
 220                                 {\r
 221                                         CellSpacing = with.CellSpacing;\r
 222                                 }\r
 223                                 if(with.IsSet(GRID_LINE) && !IsSet(GRID_LINE))\r
 224                                 {\r
 225                                         GridLines = with.GridLines;\r
 226                                 }\r
 227                         }\r
 228                 }\r
 229 \r
 230                 public override void Reset()\r
 231                 {\r
 232                         if(IsSet(IMAGE_URL))\r
 233                                 ViewState.Remove("BackImageUrl");\r
 234                         if(IsSet(HOR_ALIGN))\r
 235                                 ViewState.Remove("HorizontalAlign");\r
 236                         if(IsSet(CELL_PADD))\r
 237                                 ViewState.Remove("CellPadding");\r
 238                         if(IsSet(CELL_SPAC))\r
 239                                 ViewState.Remove("CellSpacing");\r
 240                         if(IsSet(GRID_LINE))\r
 241                                 ViewState.Remove("GridLines");\r
 242                         base.Reset();\r
 243                 }\r
 244         }\r
 245 }\r