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

   1 //
   2 // System.Web.UI.HtmlControls.HtmlInputText.cs
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.ComponentModel;
  30 using System.Collections.Specialized;
  31 using System.Globalization;
  32 using System.Security.Permissions;
  33
  34 namespace System.Web.UI.HtmlControls {
  35
  36         // CAS
  37         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  38         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  39         // attributes
  40         [DefaultEvent ("ServerChange")]
  41         [ValidationProperty ("Value")]
  42         public class HtmlInputText : HtmlInputControl, IPostBackDataHandler {
  43
  44                 private static readonly object serverChangeEvent = new object ();
  45
  46
  47                 public HtmlInputText ()
  48                         : base ("text")
  49                 {
  50                 }
  51
  52                 public HtmlInputText (string type)
  53                         : base (type)
  54                 {
  55                 }
  56
  57
  58                 [DefaultValue ("")]
  59                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  60                 [WebSysDescription("")]
  61                 [WebCategory("Behavior")]
  62                 public int MaxLength {
  63                         get {
  64                                 string s = Attributes ["maxlength"];
  65                                 return (s == null) ? -1 : Convert.ToInt32 (s);
  66                         }
  67                         set {
  68                                 if (value == -1)
  69                                         Attributes.Remove ("maxlength");
  70                                 else
  71                                         Attributes ["maxlength"] = value.ToString ();
  72                         }
  73                 }
  74
  75 #if NET_2_0
  76                 [DefaultValue (-1)]
  77 #else
  78                 [DefaultValue ("")]
  79 #endif
  80                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  81                 [WebSysDescription("")]
  82                 [WebCategory("Appearance")]
  83                 public int Size {
  84                         get {
  85                                 string s = Attributes ["size"];
  86                                 return (s == null) ? -1 : Convert.ToInt32 (s);
  87                         }
  88                         set {
  89                                 if (value == -1)
  90                                         Attributes.Remove ("size");
  91                                 else
  92                                         Attributes ["size"] = value.ToString ();
  93                         }
  94                 }
  95
  96                 public override string Value {
  97                         get {
  98                                 string s = Attributes ["value"];
  99                                 return (s == null) ? String.Empty : s;
 100                         }
 101                         set {
 102                                 if (value == null)
 103                                         Attributes.Remove ("value");
 104                                 else
 105                                         Attributes ["value"] = value;
 106                         }
 107                 }
 108
 109
 110 #if NET_2_0
 111                 protected internal
 112 #else
 113                 protected
 114 #endif
 115                 override void OnPreRender (EventArgs e)
 116                 {
 117                         base.OnPreRender (e);
 118                         if (Page != null) {
 119                                 Page.RegisterRequiresPostBack (this);
 120                         }
 121                 }
 122
 123                 protected virtual void OnServerChange (EventArgs e)
 124                 {
 125                         EventHandler serverChange = (EventHandler) Events [serverChangeEvent];
 126                         if (serverChange != null)
 127                                 serverChange (this, e);
 128                 }
 129
 130 #if !NET_2_0
 131                 protected override void RenderAttributes (HtmlTextWriter writer)
 132                 {
 133                         // the Type property can be, indirectly, changed by using the Attributes property
 134                         if (String.Compare (Type, 0, "password", 0, 8, true, CultureInfo.InvariantCulture) == 0) {
 135                                 Attributes.Remove ("value");
 136                         }
 137
 138                         base.RenderAttributes (writer);
 139                 }
 140 #endif
 141
 142                 bool LoadPostDataInternal (string postDataKey, NameValueCollection postCollection)
 143                 {
 144                         string s = postCollection [postDataKey];
 145                         if (Value != s) {
 146                                 Value = s;
 147                                 return true;
 148                         }
 149                         return false;
 150                 }
 151
 152                 void RaisePostDataChangedEventInternal ()
 153                 {
 154                         OnServerChange (EventArgs.Empty);
 155                 }
 156
 157 #if NET_2_0
 158                 protected virtual bool LoadPostData (string postDataKey, NameValueCollection postCollection)
 159                 {
 160                         return LoadPostDataInternal (postDataKey, postCollection);
 161                 }
 162
 163                 protected virtual void RaisePostDataChangedEvent ()
 164                 {
 165                         RaisePostDataChangedEventInternal ();
 166                 }
 167 #endif
 168
 169                 bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
 170                 {
 171 #if NET_2_0
 172                         return LoadPostData (postDataKey, postCollection);
 173 #else
 174                         return LoadPostDataInternal (postDataKey, postCollection);
 175 #endif
 176                 }
 177
 178                 void IPostBackDataHandler.RaisePostDataChangedEvent ()
 179                 {
 180 #if NET_2_0
 181                         RaisePostDataChangedEvent ();
 182 #else
 183                         RaisePostDataChangedEventInternal ();
 184 #endif
 185                 }
 186
 187
 188                 [WebSysDescription("")]
 189                 [WebCategory("Action")]
 190                 public event EventHandler ServerChange {
 191                         add { Events.AddHandler (serverChangeEvent, value); }
 192                         remove { Events.RemoveHandler (serverChangeEvent, value); }
 193                 }
 194         }
 195 }