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

   1 /**\r
   2  * Namespace: System.Web.UI.WebControls\r
   3  * Class:     RadioButtonList\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:  95%\r
  10  *\r
  11  * (C) Gaurav Vaish (2002)\r
  12  */\r
  13 \r
  14 using System;\r
  15 using System.Collections.Specialized;\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 RadioButtonList : ListControl, IRepeatInfoUser, INamingContainer, IPostBackDataHandler\r
  22         {\r
  23                 private bool  selectionIndexChanged;\r
  24                 private short  tabIndex;\r
  25 \r
  26                 public RadioButtonList(): base()\r
  27                 {\r
  28                         selectionIndexChanged = false;\r
  29                 }\r
  30 \r
  31                 public virtual int CellPadding\r
  32                 {\r
  33                         get\r
  34                         {\r
  35                                 if(ControlStyleCreated)\r
  36                                 {\r
  37                                         return (int)(((TableStyle)ControlStyle).CellPadding);\r
  38                                 }\r
  39                                 return -1;\r
  40                         }\r
  41                         set\r
  42                         {\r
  43                                 ((TableStyle)ControlStyle).CellPadding = value;\r
  44                         }\r
  45                 }\r
  46 \r
  47                 public virtual int CellSpacing\r
  48                 {\r
  49                         get\r
  50                         {\r
  51                                 if(ControlStyleCreated)\r
  52                                 {\r
  53                                         return (int)(((TableStyle)ControlStyle).CellSpacing);\r
  54                                 }\r
  55                                 return -1;\r
  56                         }\r
  57                         set\r
  58                         {\r
  59                                 ((TableStyle)ControlStyle).CellSpacing = value;\r
  60                         }\r
  61                 }\r
  62 \r
  63                 public virtual int RepeatColumns\r
  64                 {\r
  65                         get\r
  66                         {\r
  67                                 object o = ViewState["RepeatColumns"];\r
  68                                 if(o != null)\r
  69                                         return (int)o;\r
  70                                 return 0;\r
  71                         }\r
  72                         set\r
  73                         {\r
  74                                 if(value < 0)\r
  75                                         throw new ArgumentOutOfRangeException("value");\r
  76                                 ViewState["RepeatColumns"] = value;\r
  77                         }\r
  78                 }\r
  79 \r
  80                 public virtual RepeatDirection RepeatDirection\r
  81                 {\r
  82                         get\r
  83                         {\r
  84                                 object o = ViewState["RepeatDirection"];\r
  85                                 if(o != null)\r
  86                                         return (RepeatDirection)o;\r
  87                                 return RepeatDirection.Vertical;\r
  88                         }\r
  89                         set\r
  90                         {\r
  91                                 if(!Enum.IsDefined(typeof(RepeatDirection), value))\r
  92                                         throw new ArgumentException();\r
  93                                 ViewState["RepeatDirection"] = value;\r
  94                         }\r
  95                 }\r
  96 \r
  97                 public virtual RepeatLayout RepeatLayout\r
  98                 {\r
  99                         get\r
 100                         {\r
 101                                 object o = ViewState["RepeatLayout"];\r
 102                                 if(o != null)\r
 103                                         return (RepeatLayout)o;\r
 104                                 return RepeatLayout.Table;\r
 105                         }\r
 106                         set\r
 107                         {\r
 108                                 if(!Enum.IsDefined(typeof(RepeatLayout), value))\r
 109                                         throw new ArgumentException();\r
 110                                 ViewState["RepeatLayout"] = value;\r
 111                         }\r
 112                 }\r
 113 \r
 114                 public virtual TextAlign TextAlign\r
 115                 {\r
 116                         get\r
 117                         {\r
 118                                 object o = ViewState["TextAlign"];\r
 119                                 if(o != null)\r
 120                                         return (TextAlign)o;\r
 121                                 return TextAlign.Right;\r
 122                         }\r
 123                         set\r
 124                         {\r
 125                                 if(!Enum.IsDefined(typeof(TextAlign), value))\r
 126                                         throw new ArgumentException();\r
 127                                 ViewState["TextAlign"] = value;\r
 128                         }\r
 129                 }\r
 130 \r
 131                 protected override Style CreateControlStyle()\r
 132                 {\r
 133                         return new TableStyle(ViewState);\r
 134                 }\r
 135 \r
 136                 protected override void Render(HtmlTextWriter writer)\r
 137                 {\r
 138                         RepeatInfo info = new RepeatInfo();\r
 139                         Style cStyle = (ControlStyleCreated ? ControlStyle : null);\r
 140                         bool dirty = false;\r
 141                         tabIndex = TabIndex;\r
 142                         if(tabIndex != 0)\r
 143                         {\r
 144                                 dirty = !ViewState.IsItemDirty("TabIndex");\r
 145                                 TabIndex = 0;\r
 146                         }\r
 147                         info.RepeatColumns = RepeatColumns;\r
 148                         info.RepeatDirection = RepeatDirection;\r
 149                         info.RenderRepeater(writer, this, cStyle, this);\r
 150                         if(tabIndex != 0)\r
 151                         {\r
 152                                 TabIndex = tabIndex;\r
 153                         }\r
 154                         if(dirty)\r
 155                         {\r
 156                                 ViewState.SetItemDirty("TabIndex", false);\r
 157                         }\r
 158                 }\r
 159 \r
 160                 bool IPostBackDataHandler.LoadPostData(string postDataKey, NameValueCollection postCollection)\r
 161                 {\r
 162                         string value = postCollection[postDataKey];\r
 163                         for(int i=0; i < Items.Count; i++)\r
 164                         {\r
 165                                 if(Items[i].Value == value)\r
 166                                 {\r
 167                                         if(i != SelectedIndex)\r
 168                                         {\r
 169                                                 SelectedIndex = i;\r
 170                                         }\r
 171                                         return true;\r
 172                                 }\r
 173                         }\r
 174                         return false;\r
 175                 }\r
 176 \r
 177                 void IPostBackDataHandler.RaisePostDataChangedEvent()\r
 178                 {\r
 179                         if(selectionIndexChanged)\r
 180                                 OnSelectedIndexChanged(EventArgs.Empty);\r
 181                 }\r
 182 \r
 183                 Style IRepeatInfoUser.GetItemStyle(System.Web.UI.WebControls.ListItemType itemType, int repeatIndex)\r
 184                 {\r
 185                         return null;\r
 186                 }\r
 187 \r
 188                 [MonoTODO("RadioButtonList_RenderItem")]\r
 189                 void IRepeatInfoUser.RenderItem(System.Web.UI.WebControls.ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer)\r
 190                 {\r
 191                         throw new NotImplementedException();\r
 192                 }\r
 193 \r
 194                 bool IRepeatInfoUser.HasFooter\r
 195                 {\r
 196                         get\r
 197                         {\r
 198                                 return false;\r
 199                         }\r
 200                 }\r
 201 \r
 202                 bool IRepeatInfoUser.HasHeader\r
 203                 {\r
 204                         get\r
 205                         {\r
 206                                 return false;\r
 207                         }\r
 208                 }\r
 209 \r
 210                 bool IRepeatInfoUser.HasSeparators\r
 211                 {\r
 212                         get\r
 213                         {\r
 214                                 return false;\r
 215                         }\r
 216                 }\r
 217 \r
 218                 int IRepeatInfoUser.RepeatedItemCount\r
 219                 {\r
 220                         get\r
 221                         {\r
 222                                 return Items.Count;\r
 223                         }\r
 224                 }\r
 225         }\r
 226 }\r