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
  36 namespace System.Web.UI.WebControls {
  37
  38         [ValidationProperty ("SelectedItem")]
  39         public class RadioButtonList : ListControl, IRepeatInfoUser,
  40                 INamingContainer, IPostBackDataHandler {
  41                 bool need_raise;
  42
  43                 public RadioButtonList ()
  44                 {
  45
  46                 }
  47
  48 #if ONLY_1_1
  49                 [Bindable (true)]
  50 #endif
  51                 [DefaultValue (-1)]
  52                 [WebSysDescription ("")]
  53                 [WebCategory ("Layout")]
  54                 public virtual int CellPadding {
  55                         get {
  56                                 if (ControlStyleCreated == false)
  57                                         return -1; // default value
  58
  59                                 return ((TableStyle) ControlStyle).CellPadding;
  60                         }
  61
  62                         set {
  63                                 ((TableStyle) ControlStyle).CellPadding = value;
  64                         }
  65                 }
  66
  67 #if ONLY_1_1
  68                 [Bindable (true)]
  69 #endif
  70                 [DefaultValue (-1)]
  71                 [WebSysDescription ("")]
  72                 [WebCategory ("Layout")]
  73                 public virtual int CellSpacing {
  74                         get {
  75                                 if (ControlStyleCreated == false)
  76                                         return -1; // default value
  77
  78                                 return ((TableStyle) ControlStyle).CellSpacing;
  79                         }
  80
  81                         set {
  82                                 ((TableStyle) ControlStyle).CellSpacing = value;
  83                         }
  84                 }
  85
  86 #if ONLY_1_1
  87                 [Bindable (true)]
  88 #endif
  89                 [DefaultValue (0)]
  90                 [WebSysDescription ("")]
  91                 [WebCategory ("Layout")]
  92                 public virtual int RepeatColumns  {
  93                         get {
  94                                 return ViewState.GetInt ("RepeatColumns", 0);
  95                         }
  96
  97                         set {
  98                                 if (value < 0)
  99                                         throw new ArgumentOutOfRangeException ("The number of columns is set to a negative value.");
 100
 101                                 ViewState ["RepeatColumns"] = value;
 102                         }
 103                 }
 104
 105 #if ONLY_1_1
 106                 [Bindable (true)]
 107 #endif
 108                 [DefaultValue (RepeatDirection.Vertical)]
 109                 [WebSysDescription ("")]
 110                 [WebCategory ("Layout")]
 111                 public virtual RepeatDirection RepeatDirection {
 112                         get {
 113                                 return (RepeatDirection) ViewState.GetInt ("RepeatDirection", (int) RepeatDirection.Vertical);
 114                         }
 115
 116                         set {
 117                                 if (value != RepeatDirection.Horizontal && value != RepeatDirection.Vertical)
 118                                         throw new ArgumentOutOfRangeException ("he display direction of the list is not one of the RepeatDirection values.");
 119
 120                                 ViewState ["RepeatDirection"] = value;
 121                         }
 122                 }
 123
 124 #if ONLY_1_1
 125                 [Bindable (true)]
 126 #endif
 127                 [DefaultValue (RepeatLayout.Table)]
 128                 [WebSysDescription ("")]
 129                 [WebCategory ("Layout")]
 130                 public virtual RepeatLayout RepeatLayout {
 131                         get {
 132                                 return (RepeatLayout) ViewState.GetInt ("RepeatLayout", (int) RepeatLayout.Table);
 133                         }
 134
 135                         set {
 136                                 if (value != RepeatLayout.Flow && value != RepeatLayout.Table)
 137                                         throw new ArgumentOutOfRangeException ("The radio buttons layout is not one of the RepeatLayout values.");
 138
 139                                 ViewState ["RepeatLayout"] = value;
 140                         }
 141                 }
 142
 143 #if ONLY_1_1
 144                 [Bindable (true)]
 145 #endif
 146                 [DefaultValue (TextAlign.Right)]
 147                 [WebSysDescription ("")]
 148                 [WebCategory ("Appearance")]
 149                 public virtual TextAlign TextAlign {
 150                         get {
 151                                 return (TextAlign )ViewState.GetInt ("TextAlign", (int) TextAlign.Right);
 152                         }
 153
 154                         set {
 155                                 if (value != TextAlign.Left && value != TextAlign.Right)
 156                                         throw new ArgumentOutOfRangeException ("The label text alignment associated with the radio buttons is not one of the TextAlign values.");
 157
 158                                 ViewState ["TextAlign"] = value;
 159                         }
 160                 }
 161
 162                 // Interface properties
 163
 164 #if NET_2_0
 165                 [MonoTODO]
 166                 protected virtual bool HasFooter
 167                 {
 168                         get {
 169                                 throw new NotImplementedException ();
 170                         }
 171                 }
 172
 173                 [MonoTODO]
 174                 protected virtual bool HasHeader
 175                 {
 176                         get {
 177                                 throw new NotImplementedException ();
 178                         }
 179                 }
 180
 181                 [MonoTODO]
 182                 protected virtual bool HasSeparators
 183                 {
 184                         get {
 185                                 throw new NotImplementedException ();
 186                         }
 187                 }
 188
 189                 [MonoTODO]
 190                 protected virtual int RepeatedItemCount
 191                 {
 192                         get {
 193                                 throw new NotImplementedException ();
 194                         }
 195                 }
 196 #endif
 197
 198                 bool IRepeatInfoUser.HasFooter {
 199                         get { return false; }
 200                 }
 201
 202                 bool IRepeatInfoUser.HasHeader {
 203                         get { return false; }
 204                 }
 205
 206                 bool IRepeatInfoUser.HasSeparators {
 207                         get { return false; }
 208                 }
 209
 210                 int IRepeatInfoUser.RepeatedItemCount {
 211                         get { return Items.Count; }
 212                 }
 213
 214                 protected override Style CreateControlStyle ()
 215                 {
 216                         return new TableStyle (ViewState);
 217                 }
 218
 219 #if NET_2_0
 220                 [MonoTODO]
 221                 protected override Control FindControl (string id, int pathOffset)
 222                 {
 223                         throw new NotImplementedException ();
 224                 }
 225 #endif
 226
 227 #if NET_2_0
 228                 protected virtual
 229 #endif
 230                 Style GetItemStyle (ListItemType itemType, int repeatIndex)
 231                 {
 232                         return null;
 233                 }
 234
 235 #if NET_2_0
 236                 protected virtual
 237 #endif
 238                 void RenderItem (ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer)
 239                 {
 240                         RadioButton radio = new RadioButton ();
 241                         radio.Text = Items [repeatIndex].Text;
 242                         radio.ID = ClientID + "_"  + repeatIndex;
 243                         radio.TextAlign = TextAlign;
 244                         radio.GroupName = UniqueID;
 245                         radio.Page = Page;
 246                         radio.Checked = Items [repeatIndex].Selected;
 247                         radio.Attributes["Value"] = Items [repeatIndex].Value;
 248                         radio.RenderControl (writer);
 249                 }
 250 #if NET_2_0
 251                 protected virtual
 252 #endif
 253                 bool LoadPostData (string postDataKey, NameValueCollection postCollection)
 254                 {
 255                         string val = postCollection [postDataKey];
 256                         ListItemCollection items = Items;
 257                         int end = items.Count;
 258                         int selected = SelectedIndex;
 259                         for (int i = 0; i < end; i++) {
 260                                 ListItem item = items [i];
 261                                 if (item == null || val != item.Value)
 262                                         continue;
 263
 264                                 if (i != selected) {
 265                                         SelectedIndex = i;
 266                                         need_raise = true;
 267                                 }
 268                                 return true;
 269                         }
 270
 271                         return false;
 272                 }
 273
 274 #if NET_2_0
 275                 protected virtual
 276 #endif
 277                 void RaisePostDataChangedEvent ()
 278                 {
 279                         if (need_raise)
 280                                 OnSelectedIndexChanged (EventArgs.Empty);
 281                 }
 282
 283                 bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
 284                 {
 285                         return LoadPostData (postDataKey, postCollection);
 286                 }
 287
 288                 void IPostBackDataHandler.RaisePostDataChangedEvent ()
 289                 {
 290                         RaisePostDataChangedEvent ();
 291                 }
 292
 293                 Style IRepeatInfoUser.GetItemStyle (ListItemType itemType,  int repeatIndex)
 294                 {
 295                         return GetItemStyle (itemType, repeatIndex);
 296                 }
 297
 298                 void IRepeatInfoUser.RenderItem (ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer)
 299                 {
 300                         RenderItem (itemType, repeatIndex, repeatInfo, writer);
 301                 }
 302
 303 #if NET_2_0
 304                 protected internal
 305 #else
 306                 protected
 307 #endif
 308                 override void Render (HtmlTextWriter writer)
 309                 {
 310                         RepeatInfo repeat = new RepeatInfo ();
 311                         repeat.RepeatColumns = RepeatColumns;
 312                         repeat.RepeatDirection = RepeatDirection;
 313                         repeat.RepeatLayout = RepeatLayout;
 314                         repeat.RenderRepeater (writer, this, ControlStyle, this);
 315                 }
 316         }
 317
 318 }
 319