mcs/class/System.Web/System.Web.UI.HtmlControls/HtmlInputText.cs

   1 /*      System.Web.UI.HtmlControls\r
   2 *       Authors\r
   3 *               Leen Toelen (toelen@hotmail.com)\r
   4 */\r
   5 \r
   6 using System;\r
   7 using System.Collections.Specialized;\r
   8 using System.ComponentModel;\r
   9 using System.Globalization;\r
  10 using System.Web;\r
  11 using System.Web.UI;\r
  12 \r
  13 namespace System.Web.UI.HtmlControls{\r
  14         \r
  15         [DefaultEvent("ServerChange")]\r
  16         [ValidationProperty("Value")]\r
  17         public class HtmlInputText : HtmlInputControl, IPostBackDataHandler{\r
  18                 \r
  19                 private static readonly object EventServerChange = new object ();\r
  20                 \r
  21                 public HtmlInputText(string type):base(type){}\r
  22                 public HtmlInputText():base("text"){}\r
  23                 \r
  24                 protected override void OnPreRender (EventArgs e)\r
  25                 {\r
  26                         if (Events [EventServerChange] == null && !Disabled)\r
  27                                 ViewState.SetItemDirty("value",false);\r
  28                 }\r
  29                 \r
  30                 protected virtual void OnServerChange (EventArgs e)\r
  31                 {\r
  32                         EventHandler handler = (EventHandler) Events [EventServerChange];\r
  33                         if (handler != null) handler (this, e);\r
  34                 }\r
  35                 \r
  36                 protected override void RenderAttributes(HtmlTextWriter writer){\r
  37                         //hide value when password box\r
  38                         if (String.Compare (Type, "password",true) == 0)\r
  39                                 ViewState.Remove ("value");\r
  40 \r
  41                         base.RenderAttributes(writer);\r
  42                 }\r
  43                 \r
  44                 bool IPostBackDataHandler.LoadPostData (string postDataKey,\r
  45                                                         NameValueCollection postCollection)\r
  46                 {\r
  47                         string currentValue = Value;\r
  48                         string[] postedValue = postCollection.GetValues (postDataKey);\r
  49                         if (!currentValue.Equals (postedValue)){\r
  50                                 Value = postedValue [0];\r
  51                                 return true;\r
  52                         }\r
  53                         return false;\r
  54                 }\r
  55                 \r
  56                 void IPostBackDataHandler.RaisePostDataChangedEvent ()\r
  57                 {\r
  58                         OnServerChange (EventArgs.Empty);\r
  59                 }\r
  60                 \r
  61                 [WebCategory("Action")]\r
  62                 [WebSysDescription("Fires when the the text within the control changes.")]\r
  63                 public event EventHandler ServerChange{\r
  64                         add{\r
  65                                 Events.AddHandler(EventServerChange, value);\r
  66                         }\r
  67                         remove{\r
  68                                 Events.RemoveHandler(EventServerChange, value);\r
  69                         }\r
  70                 }\r
  71                 \r
  72                 [DefaultValue("")]\r
  73                 [WebCategory("Behavior")]\r
  74                 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]\r
  75                 public int MaxLength{\r
  76                         get{\r
  77                                 string attr = (String) ViewState["maxlength"];\r
  78                                 if (attr != null) return Int32.Parse(attr, CultureInfo.InvariantCulture);\r
  79                                 return -1;\r
  80                         }\r
  81                         set{\r
  82                                 Attributes["maxlength"] = AttributeToString(value);\r
  83                         }\r
  84                 }\r
  85                 \r
  86                 [DefaultValue("")]\r
  87                 [WebCategory("Appearance")]\r
  88                 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]\r
  89                 public int Size{\r
  90                         get{\r
  91                                 string attr = (String) ViewState["size"];\r
  92                                 if (attr != null) return Int32.Parse(attr, CultureInfo.InvariantCulture);\r
  93                                 return -1;\r
  94                         }\r
  95                         set{\r
  96                                 Attributes["size"] = AttributeToString(value);\r
  97                         }\r
  98                 }\r
  99                 \r
 100                 public override string Value{\r
 101                         get{\r
 102                                 string attr = Attributes["value"];\r
 103                                 if (attr != null) return attr;\r
 104                                 return String.Empty;\r
 105                         }\r
 106                         set{\r
 107                                 Attributes["value"] = AttributeToString(value);\r
 108                         }\r
 109                 }\r
 110                 \r
 111         } // class HtmlInputText\r
 112 } // namespace System.Web.UI.HtmlControls\r
 113 \r