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 #if NET_2_0
  43         [SupportsEventValidation]
  44 #endif
  45         public class HtmlInputText : HtmlInputControl, IPostBackDataHandler {
  46
  47                 private static readonly object serverChangeEvent = new object ();
  48
  49
  50                 public HtmlInputText ()
  51                         : base ("text")
  52                 {
  53                 }
  54
  55                 public HtmlInputText (string type)
  56                         : base (type)
  57                 {
  58                 }
  59
  60
  61                 [DefaultValue ("")]
  62                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  63                 [WebSysDescription("")]
  64                 [WebCategory("Behavior")]
  65                 public int MaxLength {
  66                         get {
  67                                 string s = Attributes ["maxlength"];
  68                                 return (s == null) ? -1 : Convert.ToInt32 (s);
  69                         }
  70                         set {
  71                                 if (value == -1)
  72                                         Attributes.Remove ("maxlength");
  73                                 else
  74                                         Attributes ["maxlength"] = value.ToString ();
  75                         }
  76                 }
  77
  78 #if NET_2_0
  79                 [DefaultValue (-1)]
  80 #else
  81                 [DefaultValue ("")]
  82 #endif
  83                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  84                 [WebSysDescription("")]
  85                 [WebCategory("Appearance")]
  86                 public int Size {
  87                         get {
  88                                 string s = Attributes ["size"];
  89                                 return (s == null) ? -1 : Convert.ToInt32 (s);
  90                         }
  91                         set {
  92                                 if (value == -1)
  93                                         Attributes.Remove ("size");
  94                                 else
  95                                         Attributes ["size"] = value.ToString ();
  96                         }
  97                 }
  98
  99                 public override string Value {
 100                         get {
 101                                 string s = Attributes ["value"];
 102                                 return (s == null) ? String.Empty : s;
 103                         }
 104                         set {
 105                                 if (value == null)
 106                                         Attributes.Remove ("value");
 107                                 else
 108                                         Attributes ["value"] = value;
 109                         }
 110                 }
 111
 112
 113 #if NET_2_0
 114                 protected internal override void Render (HtmlTextWriter writer)
 115                 {
 116                         Page.ClientScript.RegisterForEventValidation (this.UniqueID);
 117                         base.Render (writer);
 118                 }
 119 #endif
 120
 121 #if NET_2_0
 122                 protected internal
 123 #else
 124                 protected
 125 #endif
 126                 override void OnPreRender (EventArgs e)
 127                 {
 128                         base.OnPreRender (e);
 129                         if (Page != null) {
 130                                 Page.RegisterRequiresPostBack (this);
 131                         }
 132                 }
 133
 134                 protected virtual void OnServerChange (EventArgs e)
 135                 {
 136                         EventHandler serverChange = (EventHandler) Events [serverChangeEvent];
 137                         if (serverChange != null)
 138                                 serverChange (this, e);
 139                 }
 140
 141                 protected override void RenderAttributes (HtmlTextWriter writer)
 142                 {
 143                         // the Type property can be, indirectly, changed by using the Attributes property
 144                         if (String.Compare (Type, 0, "password", 0, 8, true, CultureInfo.InvariantCulture) == 0) {
 145                                 Attributes.Remove ("value");
 146                         }
 147
 148                         base.RenderAttributes (writer);
 149                 }
 150
 151                 bool LoadPostDataInternal (string postDataKey, NameValueCollection postCollection)
 152                 {
 153                         string s = postCollection [postDataKey];
 154                         if (Value != s) {
 155                                 Value = s;
 156                                 return true;
 157                         }
 158                         return false;
 159                 }
 160
 161                 void RaisePostDataChangedEventInternal ()
 162                 {
 163                         OnServerChange (EventArgs.Empty);
 164                 }
 165
 166 #if NET_2_0
 167                 protected virtual bool LoadPostData (string postDataKey, NameValueCollection postCollection)
 168                 {
 169                         return LoadPostDataInternal (postDataKey, postCollection);
 170                 }
 171
 172                 protected virtual void RaisePostDataChangedEvent ()
 173                 {
 174                         RaisePostDataChangedEventInternal ();
 175                 }
 176 #endif
 177
 178                 bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
 179                 {
 180 #if NET_2_0
 181                         return LoadPostData (postDataKey, postCollection);
 182 #else
 183                         return LoadPostDataInternal (postDataKey, postCollection);
 184 #endif
 185                 }
 186
 187                 void IPostBackDataHandler.RaisePostDataChangedEvent ()
 188                 {
 189 #if NET_2_0
 190                         RaisePostDataChangedEvent ();
 191 #else
 192                         RaisePostDataChangedEventInternal ();
 193 #endif
 194                 }
 195
 196
 197                 [WebSysDescription("")]
 198                 [WebCategory("Action")]
 199                 public event EventHandler ServerChange {
 200                         add { Events.AddHandler (serverChangeEvent, value); }
 201                         remove { Events.RemoveHandler (serverChangeEvent, value); }
 202                 }
 203         }
 204 }