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