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

   1 /**\r
   2  * Namespace: System.Web.UI.WebControls\r
   3  * Class:     TableItemStyle\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.ComponentModel;\r
  16 using System.Web;\r
  17 using System.Web.UI;\r
  18 \r
  19 namespace System.Web.UI.WebControls\r
  20 {\r
  21         public class TableItemStyle: Style\r
  22         {\r
  23                 private static int H_ALIGN = (0x01 << 16);\r
  24                 private static int V_ALIGN = (0x01 << 17);\r
  25                 private static int WRAP    = (0x01 << 18);\r
  26 \r
  27                 public TableItemStyle(): base()\r
  28                 {\r
  29                 }\r
  30 \r
  31                 public TableItemStyle(StateBag bag): base(bag)\r
  32                 {\r
  33                 }\r
  34 \r
  35                 public virtual HorizontalAlign HorizontalAlign\r
  36                 {\r
  37                         get\r
  38                         {\r
  39                                 if(IsSet(H_ALIGN))\r
  40                                         return (HorizontalAlign)ViewState["HorizontalAlign"];\r
  41                                 return HorizontalAlign.NotSet;\r
  42                         }\r
  43                         set\r
  44                         {\r
  45                                 if(!Enum.IsDefined(typeof(HorizontalAlign), value))\r
  46                                 {\r
  47                                         throw new ArgumentException();\r
  48                                 }\r
  49                                 ViewState["HorizontalAlign"] = value;\r
  50                                 Set(H_ALIGN);\r
  51                         }\r
  52                 }\r
  53 \r
  54                 public virtual VerticalAlign VerticalAlign\r
  55                 {\r
  56                         get\r
  57                         {\r
  58                                 if(IsSet(V_ALIGN))\r
  59                                         return (VerticalAlign)ViewState["VerticalAlign"];\r
  60                                 return VerticalAlign.NotSet;\r
  61                         }\r
  62                         set\r
  63                         {\r
  64                                 if(!Enum.IsDefined(typeof(VerticalAlign), value))\r
  65                                 {\r
  66                                         throw new ArgumentException();\r
  67                                 }\r
  68                                 ViewState["VerticalAlign"] = value;\r
  69                                 Set(V_ALIGN);\r
  70                         }\r
  71                 }\r
  72 \r
  73                 public virtual bool Wrap\r
  74                 {\r
  75                         get\r
  76                         {\r
  77                                 if(IsSet(WRAP))\r
  78                                         return (bool)ViewState["Wrap"];\r
  79                                 return true;\r
  80                         }\r
  81                         set\r
  82                         {\r
  83                                 ViewState["Wrap"] = value;\r
  84                         }\r
  85                 }\r
  86 \r
  87                 public override void CopyFrom(Style s)\r
  88                 {\r
  89                         if(s!=null && s is TableItemStyle && !s.IsEmpty)\r
  90                         {\r
  91                                 base.CopyFrom(s);\r
  92                                 TableItemStyle from = (TableItemStyle)s;\r
  93                                 if(from.IsSet(H_ALIGN))\r
  94                                 {\r
  95                                         HorizontalAlign = from.HorizontalAlign;\r
  96                                 }\r
  97                                 if(from.IsSet(V_ALIGN))\r
  98                                 {\r
  99                                         VerticalAlign = from.VerticalAlign;\r
 100                                 }\r
 101                                 if(from.IsSet(WRAP))\r
 102                                 {\r
 103                                         Wrap = from.Wrap;\r
 104                                 }\r
 105                         }\r
 106                 }\r
 107 \r
 108                 public override void MergeWith(Style s)\r
 109                 {\r
 110                         if(s!=null && s is TableItemStyle && !s.IsEmpty)\r
 111                         {\r
 112                                 base.MergeWith(s);\r
 113                                 TableItemStyle with = (TableItemStyle)s;\r
 114                                 if(with.IsSet(H_ALIGN) && !IsSet(H_ALIGN))\r
 115                                 {\r
 116                                         HorizontalAlign = with.HorizontalAlign;\r
 117                                 }\r
 118                                 if(with.IsSet(V_ALIGN) && !IsSet(V_ALIGN))\r
 119                                 {\r
 120                                         VerticalAlign = with.VerticalAlign;\r
 121                                 }\r
 122                                 if(with.IsSet(WRAP) && !IsSet(WRAP))\r
 123                                 {\r
 124                                         Wrap = with.Wrap;\r
 125                                 }\r
 126                         }\r
 127                 }\r
 128 \r
 129                 public override void Reset()\r
 130                 {\r
 131                         if(IsSet(H_ALIGN))\r
 132                                 ViewState.Remove("HorizontalAlign");\r
 133                         if(IsSet(V_ALIGN))\r
 134                                 ViewState.Remove("VerticalAlign");\r
 135                         if(IsSet(WRAP))\r
 136                                 ViewState.Remove("Wrap");\r
 137                         base.Reset();\r
 138                 }\r
 139 \r
 140                 public override void AddAttributesToRender(HtmlTextWriter writer, WebControl owner)\r
 141                 {\r
 142                         base.AddAttributesToRender(writer, owner);\r
 143                         if(!Wrap)\r
 144                         {\r
 145                                 writer.AddAttribute(HtmlTextWriterAttribute.Nowrap, "nowrap");\r
 146                         }\r
 147                         if(HorizontalAlign != HorizontalAlign.NotSet)\r
 148                         {\r
 149                                 writer.AddAttribute(HtmlTextWriterAttribute.Align, TypeDescriptor.GetConverter(typeof(HorizontalAlign)).ConvertToString(HorizontalAlign));\r
 150                         }\r
 151                         if(VerticalAlign != VerticalAlign.NotSet)\r
 152                         {\r
 153                                 writer.AddAttribute(HtmlTextWriterAttribute.Valign, TypeDescriptor.GetConverter(typeof(VerticalAlign)).ConvertToString(VerticalAlign));\r
 154                         }\r
 155                 }\r
 156         }\r
 157 }\r