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) 2005-2010 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 using System.Web.Util;
  34
  35 namespace System.Web.UI.HtmlControls
  36 {
  37         // CAS
  38         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  39         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  40         // attributes
  41         [DefaultEvent ("ServerChange")]
  42         [ValidationProperty ("Value")]
  43         [SupportsEventValidation]
  44         public class HtmlInputText : HtmlInputControl, IPostBackDataHandler
  45         {
  46                 static readonly object serverChangeEvent = new object ();
  47
  48                 public HtmlInputText ()
  49                         : base ("text")
  50                 {
  51                 }
  52
  53                 public HtmlInputText (string type)
  54                         : base (type)
  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                 [DefaultValue (-1)]
  76                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  77                 [WebSysDescription("")]
  78                 [WebCategory("Appearance")]
  79                 public int Size {
  80                         get {
  81                                 string s = Attributes ["size"];
  82                                 return (s == null) ? -1 : Convert.ToInt32 (s);
  83                         }
  84                         set {
  85                                 if (value == -1)
  86                                         Attributes.Remove ("size");
  87                                 else
  88                                         Attributes ["size"] = value.ToString ();
  89                         }
  90                 }
  91
  92                 public override string Value {
  93                         get {
  94                                 string s = Attributes ["value"];
  95                                 return (s == null) ? String.Empty : s;
  96                         }
  97                         set {
  98                                 if (value == null)
  99                                         Attributes.Remove ("value");
 100                                 else
 101                                         Attributes ["value"] = value;
 102                         }
 103                 }
 104
 105                 protected internal override void Render (HtmlTextWriter writer)
 106                 {
 107                         Page page = Page;
 108                         if (page != null)
 109                                 page.ClientScript.RegisterForEventValidation (UniqueID);
 110                         base.Render (writer);
 111                 }
 112
 113                 protected internal override void OnPreRender (EventArgs e)
 114                 {
 115                         base.OnPreRender (e);
 116
 117                         Page page = Page;
 118                         if (page != null && !Disabled) {
 119                                 page.RegisterRequiresPostBack (this);
 120                                 page.RegisterEnabledControl (this);
 121                         }
 122                 }
 123
 124                 protected virtual void OnServerChange (EventArgs e)
 125                 {
 126                         EventHandler serverChange = (EventHandler) Events [serverChangeEvent];
 127                         if (serverChange != null)
 128                                 serverChange (this, e);
 129                 }
 130
 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, Helpers.InvariantCulture) == 0) {
 135                                 Attributes.Remove ("value");
 136                         }
 137
 138                         base.RenderAttributes (writer);
 139                 }
 140
 141                 bool LoadPostDataInternal (string postDataKey, NameValueCollection postCollection)
 142                 {
 143                         string s = postCollection [postDataKey];
 144                         if (Value != s) {
 145                                 Value = s;
 146                                 return true;
 147                         }
 148                         return false;
 149                 }
 150
 151                 void RaisePostDataChangedEventInternal ()
 152                 {
 153                         OnServerChange (EventArgs.Empty);
 154                 }
 155
 156                 protected virtual bool LoadPostData (string postDataKey, NameValueCollection postCollection)
 157                 {
 158                         return LoadPostDataInternal (postDataKey, postCollection);
 159                 }
 160
 161                 protected virtual void RaisePostDataChangedEvent ()
 162                 {
 163                         ValidateEvent (UniqueID, String.Empty);
 164                         RaisePostDataChangedEventInternal ();
 165                 }
 166
 167                 bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
 168                 {
 169                         return LoadPostData (postDataKey, postCollection);
 170                 }
 171
 172                 void IPostBackDataHandler.RaisePostDataChangedEvent ()
 173                 {
 174                         RaisePostDataChangedEvent ();
 175                 }
 176
 177                 [WebSysDescription("")]
 178                 [WebCategory("Action")]
 179                 public event EventHandler ServerChange {
 180                         add { Events.AddHandler (serverChangeEvent, value); }
 181                         remove { Events.RemoveHandler (serverChangeEvent, value); }
 182                 }
 183         }
 184 }