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

   1 //
   2 // System.Web.UI.WebControls.RadioButtonList.cs
   3 //
   4 // Authors:
   5 //    Jordi Mas i Hernandez (jordi@ximian.com)
   6 //
   7 // (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 //
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30 //
  31
  32 using System.Collections;
  33 using System.ComponentModel;
  34 using System.Collections.Specialized;
  35 using System.Security.Permissions;
  36
  37 namespace System.Web.UI.WebControls {
  38
  39         // CAS
  40         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  41         [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  42         // attributes
  43         [ValidationProperty ("SelectedItem")]
  44 #if NET_2_0
  45         [SupportsEventValidation]
  46 #endif
  47         public class RadioButtonList : ListControl, IRepeatInfoUser,
  48                 INamingContainer, IPostBackDataHandler {
  49                 bool need_raise;
  50
  51                 public RadioButtonList ()
  52                 {
  53
  54                 }
  55
  56 #if ONLY_1_1
  57                 [Bindable (true)]
  58 #endif
  59                 [DefaultValue (-1)]
  60                 [WebSysDescription ("")]
  61                 [WebCategory ("Layout")]
  62                 public virtual int CellPadding {
  63                         get {
  64                                 if (ControlStyleCreated == false)
  65                                         return -1; // default value
  66
  67                                 return ((TableStyle) ControlStyle).CellPadding;
  68                         }
  69
  70                         set {
  71                                 ((TableStyle) ControlStyle).CellPadding = value;
  72                         }
  73                 }
  74
  75 #if ONLY_1_1
  76                 [Bindable (true)]
  77 #endif
  78                 [DefaultValue (-1)]
  79                 [WebSysDescription ("")]
  80                 [WebCategory ("Layout")]
  81                 public virtual int CellSpacing {
  82                         get {
  83                                 if (ControlStyleCreated == false)
  84                                         return -1; // default value
  85
  86                                 return ((TableStyle) ControlStyle).CellSpacing;
  87                         }
  88
  89                         set {
  90                                 ((TableStyle) ControlStyle).CellSpacing = value;
  91                         }
  92                 }
  93
  94 #if ONLY_1_1
  95                 [Bindable (true)]
  96 #endif
  97                 [DefaultValue (0)]
  98                 [WebSysDescription ("")]
  99                 [WebCategory ("Layout")]
 100                 public virtual int RepeatColumns  {
 101                         get {
 102                                 return ViewState.GetInt ("RepeatColumns", 0);
 103                         }
 104
 105                         set {
 106                                 if (value < 0)
 107                                         throw new ArgumentOutOfRangeException ("The number of columns is set to a negative value.");
 108
 109                                 ViewState ["RepeatColumns"] = value;
 110                         }
 111                 }
 112
 113 #if ONLY_1_1
 114                 [Bindable (true)]
 115 #endif
 116                 [DefaultValue (RepeatDirection.Vertical)]
 117                 [WebSysDescription ("")]
 118                 [WebCategory ("Layout")]
 119                 public virtual RepeatDirection RepeatDirection {
 120                         get {
 121                                 return (RepeatDirection) ViewState.GetInt ("RepeatDirection", (int) RepeatDirection.Vertical);
 122                         }
 123
 124                         set {
 125                                 if (value != RepeatDirection.Horizontal && value != RepeatDirection.Vertical)
 126                                         throw new ArgumentOutOfRangeException ("he display direction of the list is not one of the RepeatDirection values.");
 127
 128                                 ViewState ["RepeatDirection"] = value;
 129                         }
 130                 }
 131
 132 #if ONLY_1_1
 133                 [Bindable (true)]
 134 #endif
 135                 [DefaultValue (RepeatLayout.Table)]
 136                 [WebSysDescription ("")]
 137                 [WebCategory ("Layout")]
 138                 public virtual RepeatLayout RepeatLayout {
 139                         get {
 140                                 return (RepeatLayout) ViewState.GetInt ("RepeatLayout", (int) RepeatLayout.Table);
 141                         }
 142
 143                         set {
 144                                 if (value != RepeatLayout.Flow && value != RepeatLayout.Table)
 145                                         throw new ArgumentOutOfRangeException ("The radio buttons layout is not one of the RepeatLayout values.");
 146
 147                                 ViewState ["RepeatLayout"] = value;
 148                         }
 149                 }
 150
 151 #if ONLY_1_1
 152                 [Bindable (true)]
 153 #endif
 154                 [DefaultValue (TextAlign.Right)]
 155                 [WebSysDescription ("")]
 156                 [WebCategory ("Appearance")]
 157                 public virtual TextAlign TextAlign {
 158                         get {
 159                                 return (TextAlign )ViewState.GetInt ("TextAlign", (int) TextAlign.Right);
 160                         }
 161
 162                         set {
 163                                 if (value != TextAlign.Left && value != TextAlign.Right)
 164                                         throw new ArgumentOutOfRangeException ("The label text alignment associated with the radio buttons is not one of the TextAlign values.");
 165
 166                                 ViewState ["TextAlign"] = value;
 167                         }
 168                 }
 169
 170                 // Interface properties
 171
 172 #if NET_2_0
 173                 [MonoTODO]
 174                 protected virtual bool HasFooter
 175                 {
 176                         get {
 177                                 throw new NotImplementedException ();
 178                         }
 179                 }
 180
 181                 [MonoTODO]
 182                 protected virtual bool HasHeader
 183                 {
 184                         get {
 185                                 throw new NotImplementedException ();
 186                         }
 187                 }
 188
 189                 [MonoTODO]
 190                 protected virtual bool HasSeparators
 191                 {
 192                         get {
 193                                 throw new NotImplementedException ();
 194                         }
 195                 }
 196
 197                 [MonoTODO]
 198                 protected virtual int RepeatedItemCount
 199                 {
 200                         get {
 201                                 throw new NotImplementedException ();
 202                         }
 203                 }
 204 #endif
 205
 206                 bool IRepeatInfoUser.HasFooter {
 207                         get { return false; }
 208                 }
 209
 210                 bool IRepeatInfoUser.HasHeader {
 211                         get { return false; }
 212                 }
 213
 214                 bool IRepeatInfoUser.HasSeparators {
 215                         get { return false; }
 216                 }
 217
 218                 int IRepeatInfoUser.RepeatedItemCount {
 219                         get { return Items.Count; }
 220                 }
 221
 222                 protected override Style CreateControlStyle ()
 223                 {
 224                         return new TableStyle (ViewState);
 225                 }
 226
 227 #if NET_2_0
 228                 [MonoTODO]
 229                 protected override Control FindControl (string id, int pathOffset)
 230                 {
 231                         throw new NotImplementedException ();
 232                 }
 233 #endif
 234
 235 #if NET_2_0
 236                 protected virtual
 237 #endif
 238                 Style GetItemStyle (ListItemType itemType, int repeatIndex)
 239                 {
 240                         return null;
 241                 }
 242
 243 #if NET_2_0
 244                 protected virtual
 245 #endif
 246                 void RenderItem (ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer)
 247                 {
 248                         RadioButton radio = new RadioButton ();
 249                         radio.Text = Items [repeatIndex].Text;
 250                         radio.ID = ClientID + "_"  + repeatIndex;
 251                         radio.TextAlign = TextAlign;
 252                         radio.GroupName = UniqueID;
 253                         radio.Page = Page;
 254                         radio.Checked = Items [repeatIndex].Selected;
 255                         radio.Attributes["Value"] = Items [repeatIndex].Value;
 256                         radio.RenderControl (writer);
 257                 }
 258 #if NET_2_0
 259                 protected virtual
 260 #endif
 261                 bool LoadPostData (string postDataKey, NameValueCollection postCollection)
 262                 {
 263                         string val = postCollection [postDataKey];
 264                         ListItemCollection items = Items;
 265                         int end = items.Count;
 266                         int selected = SelectedIndex;
 267                         for (int i = 0; i < end; i++) {
 268                                 ListItem item = items [i];
 269                                 if (item == null || val != item.Value)
 270                                         continue;
 271
 272                                 if (i != selected) {
 273                                         SelectedIndex = i;
 274                                         need_raise = true;
 275                                 }
 276                                 return true;
 277                         }
 278
 279                         return false;
 280                 }
 281
 282 #if NET_2_0
 283                 protected virtual
 284 #endif
 285                 void RaisePostDataChangedEvent ()
 286                 {
 287                         if (need_raise)
 288                                 OnSelectedIndexChanged (EventArgs.Empty);
 289                 }
 290
 291                 bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
 292                 {
 293                         return LoadPostData (postDataKey, postCollection);
 294                 }
 295
 296                 void IPostBackDataHandler.RaisePostDataChangedEvent ()
 297                 {
 298                         RaisePostDataChangedEvent ();
 299                 }
 300
 301                 Style IRepeatInfoUser.GetItemStyle (ListItemType itemType,  int repeatIndex)
 302                 {
 303                         return GetItemStyle (itemType, repeatIndex);
 304                 }
 305
 306                 void IRepeatInfoUser.RenderItem (ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer)
 307                 {
 308                         RenderItem (itemType, repeatIndex, repeatInfo, writer);
 309                 }
 310
 311 #if NET_2_0
 312                 protected internal
 313 #else
 314                 protected
 315 #endif
 316                 override void Render (HtmlTextWriter writer)
 317                 {
 318                         RepeatInfo repeat = new RepeatInfo ();
 319                         repeat.RepeatColumns = RepeatColumns;
 320                         repeat.RepeatDirection = RepeatDirection;
 321                         repeat.RepeatLayout = RepeatLayout;
 322                         repeat.RenderRepeater (writer, this, ControlStyle, this);
 323                 }
 324         }
 325
 326 }
 327