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

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