mcs/class/System.Web.Mobile/System.Web.UI.MobileControls/Command.cs

   1
   2 //
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   4 // a copy of this software and associated documentation files (the
   5 // "Software"), to deal in the Software without restriction, including
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  10 //
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  21 //
  22 /**
  23  * Project   : Mono
  24  * Namespace : System.Web.UI.MobileControls
  25  * Class     : Command
  26  * Author    : Gaurav Vaish
  27  *
  28  * Copyright : 2003 with Gaurav Vaish, and with
  29  *             Ximian Inc
  30  */
  31
  32 using System.Collections.Specialized;
  33 using System.Web.UI;
  34 using System.Web.UI.WebControls;
  35
  36 namespace System.Web.UI.MobileControls
  37 {
  38         public class Command : TextControl, IPostBackEventHandler,
  39                                IPostBackDataHandler
  40         {
  41                 private static readonly object ClickEvent       = new object();
  42                 private static readonly object ItemCommandEvent = new object();
  43
  44                 public Command()
  45                 {
  46                 }
  47
  48                 public event EventHandler Click
  49                 {
  50                         add
  51                         {
  52                                 Events.AddHandler(ClickEvent, value);
  53                         }
  54                         remove
  55                         {
  56                                 Events.RemoveHandler(ClickEvent, value);
  57                         }
  58                 }
  59
  60                 public event ObjectListCommandEventHandler ItemCommand
  61                 {
  62                         add
  63                         {
  64                                 Events.AddHandler(ItemCommandEvent, value);
  65                         }
  66                         remove
  67                         {
  68                                 Events.RemoveHandler(ItemCommandEvent, value);
  69                         }
  70                 }
  71
  72                 bool IPostBackDataHandler.LoadPostData(string key,
  73                                                       NameValueCollection data)
  74                 {
  75                         bool dataChanged;
  76                         bool stateChanged = Adapter.LoadPostData(key, data, null, out dataChanged);
  77                         if(stateChanged)
  78                         {
  79                                 if(dataChanged)
  80                                         Page.RegisterRequiresRaiseEvent(this);
  81                         } else
  82                         {
  83                                 if(data[key] != null)
  84                                         Page.RegisterRequiresRaiseEvent(this);
  85                         }
  86                         return false;
  87                 }
  88
  89                 void IPostBackDataHandler.RaisePostDataChangedEvent()
  90                 {
  91                 }
  92
  93                 void IPostBackEventHandler.RaisePostBackEvent(string eventArgument)
  94                 {
  95                         if(CausesValidation)
  96                                 MobilePage.Validate();
  97                         Form.CurrentPage = 1;
  98                         OnClick(EventArgs.Empty);
  99                         OnItemCommand(new CommandEventArgs(CommandName, CommandArgument));
 100                 }
 101
 102                 public bool CausesValidation
 103                 {
 104                         get
 105                         {
 106                                 object o = ViewState["CausesValidation"];
 107                                 if(o != null)
 108                                         return (bool)o;
 109                                 return true;
 110                         }
 111                         set
 112                         {
 113                                 ViewState["CausesValidation"] = value;
 114                         }
 115                 }
 116
 117                 public string CommandArgument
 118                 {
 119                         get
 120                         {
 121                                 object o = ViewState["CommandArgument"];
 122                                 if(o != null)
 123                                         return (string)o;
 124                                 return String.Empty;
 125                         }
 126                         set
 127                         {
 128                                 ViewState["CommandArgument"] = value;
 129                         }
 130                 }
 131
 132                 public string CommandName
 133                 {
 134                         get
 135                         {
 136                                 object o = ViewState["CommandName"];
 137                                 if(o != null)
 138                                         return (string)o;
 139                                 return String.Empty;
 140                         }
 141                         set
 142                         {
 143                                 ViewState["CommandName"] = value;
 144                         }
 145                 }
 146
 147                 public CommandFormat Format
 148                 {
 149                         get
 150                         {
 151                                 object o = ViewState["Format"];
 152                                 if(o != null)
 153                                         return (CommandFormat)o;
 154                                 return CommandFormat.Button;
 155                         }
 156                         set
 157                         {
 158                                 //if(!System.Enum.IsDefined(typeof(CommandFormat), value)
 159                                 //      throw new ArgumentException("Illegal value");
 160                                 ViewState["Format"] = value;
 161                         }
 162                 }
 163
 164                 public string ImageUrl
 165                 {
 166                         get
 167                         {
 168                                 object o = ViewState["ImageUrl"];
 169                                 if(o != null)
 170                                         return (string)o;
 171                                 return String.Empty;
 172                         }
 173                         set
 174                         {
 175                                 ViewState["ImageUrl"] = value;
 176                         }
 177                 }
 178
 179                 public string SoftKeyLabel
 180                 {
 181                         get
 182                         {
 183                                 object o = ViewState["SoftKeyLabel"];
 184                                 if(o != null)
 185                                         return (string)o;
 186                                 return String.Empty;
 187                         }
 188                         set
 189                         {
 190                                 ViewState["SoftKeyLabel"] = value;
 191                         }
 192                 }
 193
 194                 protected virtual void OnClick(EventArgs e)
 195                 {
 196                         EventHandler eh = (EventHandler)(Events[ClickEvent]);
 197                         if(eh != null)
 198                                 eh(this, e);
 199                 }
 200
 201                 protected virtual void OnItemCommand(CommandEventArgs e)
 202                 {
 203                         CommandEventHandler ceh = (CommandEventHandler)(Events[ItemCommandEvent]);
 204                         if(ceh != null)
 205                                 ceh(this, e);
 206                 }
 207
 208                 protected virtual bool IsFormSubmitControl()
 209                 {
 210                         return true;
 211                 }
 212         }
 213 }