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                 static readonly object serverChangeEvent = new object ();
  48
  49                 public HtmlInputText ()
  50                         : base ("text")
  51                 {
  52                 }
  53
  54                 public HtmlInputText (string type)
  55                         : base (type)
  56                 {
  57                 }
  58
  59                 [DefaultValue ("")]
  60                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  61                 [WebSysDescription("")]
  62                 [WebCategory("Behavior")]
  63                 public int MaxLength {
  64                         get {
  65                                 string s = Attributes ["maxlength"];
  66                                 return (s == null) ? -1 : Convert.ToInt32 (s);
  67                         }
  68                         set {
  69                                 if (value == -1)
  70                                         Attributes.Remove ("maxlength");
  71                                 else
  72                                         Attributes ["maxlength"] = value.ToString ();
  73                         }
  74                 }
  75
  76 #if NET_2_0
  77                 [DefaultValue (-1)]
  78 #else
  79                 [DefaultValue ("")]
  80 #endif
  81                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  82                 [WebSysDescription("")]
  83                 [WebCategory("Appearance")]
  84                 public int Size {
  85                         get {
  86                                 string s = Attributes ["size"];
  87                                 return (s == null) ? -1 : Convert.ToInt32 (s);
  88                         }
  89                         set {
  90                                 if (value == -1)
  91                                         Attributes.Remove ("size");
  92                                 else
  93                                         Attributes ["size"] = value.ToString ();
  94                         }
  95                 }
  96
  97                 public override string Value {
  98                         get {
  99                                 string s = Attributes ["value"];
 100                                 return (s == null) ? String.Empty : s;
 101                         }
 102                         set {
 103                                 if (value == null)
 104                                         Attributes.Remove ("value");
 105                                 else
 106                                         Attributes ["value"] = value;
 107                         }
 108                 }
 109
 110
 111 #if NET_2_0
 112                 protected internal override void Render (HtmlTextWriter writer)
 113                 {
 114                         Page page = Page;
 115                         if (page != null)
 116                                 page.ClientScript.RegisterForEventValidation (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 && !Disabled) {
 130                                 Page.RegisterRequiresPostBack (this);
 131 #if NET_2_0
 132                                 Page.RegisterEnabledControl (this);
 133 #endif
 134                         }
 135                 }
 136
 137                 protected virtual void OnServerChange (EventArgs e)
 138                 {
 139                         EventHandler serverChange = (EventHandler) Events [serverChangeEvent];
 140                         if (serverChange != null)
 141                                 serverChange (this, e);
 142                 }
 143
 144                 protected override void RenderAttributes (HtmlTextWriter writer)
 145                 {
 146                         // the Type property can be, indirectly, changed by using the Attributes property
 147                         if (String.Compare (Type, 0, "password", 0, 8, true, CultureInfo.InvariantCulture) == 0) {
 148                                 Attributes.Remove ("value");
 149                         }
 150
 151                         base.RenderAttributes (writer);
 152                 }
 153
 154                 bool LoadPostDataInternal (string postDataKey, NameValueCollection postCollection)
 155                 {
 156                         string s = postCollection [postDataKey];
 157                         if (Value != s) {
 158                                 Value = s;
 159                                 return true;
 160                         }
 161                         return false;
 162                 }
 163
 164                 void RaisePostDataChangedEventInternal ()
 165                 {
 166                         OnServerChange (EventArgs.Empty);
 167                 }
 168
 169 #if NET_2_0
 170                 protected virtual bool LoadPostData (string postDataKey, NameValueCollection postCollection)
 171                 {
 172                         return LoadPostDataInternal (postDataKey, postCollection);
 173                 }
 174
 175                 protected virtual void RaisePostDataChangedEvent ()
 176                 {
 177                         ValidateEvent (UniqueID, String.Empty);
 178                         RaisePostDataChangedEventInternal ();
 179                 }
 180 #endif
 181
 182                 bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
 183                 {
 184 #if NET_2_0
 185                         return LoadPostData (postDataKey, postCollection);
 186 #else
 187                         return LoadPostDataInternal (postDataKey, postCollection);
 188 #endif
 189                 }
 190
 191                 void IPostBackDataHandler.RaisePostDataChangedEvent ()
 192                 {
 193 #if NET_2_0
 194                         RaisePostDataChangedEvent ();
 195 #else
 196                         RaisePostDataChangedEventInternal ();
 197 #endif
 198                 }
 199
 200
 201                 [WebSysDescription("")]
 202                 [WebCategory("Action")]
 203                 public event EventHandler ServerChange {
 204                         add { Events.AddHandler (serverChangeEvent, value); }
 205                         remove { Events.RemoveHandler (serverChangeEvent, value); }
 206                 }
 207         }
 208 }