mcs/class/System.Web/System.Web.UI.WebControls/HyperLink.cs

   1 //
   2 // System.Web.UI.WebControls.Label.cs
   3 //
   4 // Authors:
   5 //      Ben Maurer (bmaurer@novell.com)
   6 //
   7 // (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // TODO: Are we missing something in LoadViewState?
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.ComponentModel;
  32 using System.Web.UI;
  33
  34 namespace System.Web.UI.WebControls {
  35         [ControlBuilder(typeof(HyperLinkControlBuilder))]
  36         [DataBindingHandler("System.Web.UI.Design.HyperLinkDataBindingHandler, " + Consts.AssemblySystem_Design)]
  37         [ParseChildren (false)]
  38 #if NET_2_0
  39         [ToolboxData("<{0}:HyperLink runat=\"server\">HyperLink</{0}:HyperLink>")]
  40 #else
  41         [ToolboxData("<{0}:HyperLink runat=server>HyperLink</{0}:HyperLink>")]
  42 #endif
  43         [DefaultProperty("Text")]
  44         [Designer("System.Web.UI.Design.WebControls.HyperLinkDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  45         public class HyperLink : WebControl {
  46
  47                 public HyperLink () : base (HtmlTextWriterTag.A)
  48                 {
  49                 }
  50
  51                 protected override void AddAttributesToRender (HtmlTextWriter w)
  52                 {
  53                         base.AddAttributesToRender (w);
  54                         // add attributes - only if they're not empty
  55                         string s = NavigateUrl;
  56                         if (s.Length > 0)
  57                                 w.AddAttribute (HtmlTextWriterAttribute.Href, ResolveUrl (s));
  58                         s = Target;
  59                         if (s.Length > 0)
  60                                 w.AddAttribute (HtmlTextWriterAttribute.Target, s);
  61                 }
  62
  63                 protected override void AddParsedSubObject (object obj)
  64                 {
  65                         if (HasControls ()) {
  66                                 base.AddParsedSubObject (obj);
  67                                 return;
  68                         }
  69
  70                         LiteralControl lc = obj as LiteralControl;
  71
  72                         if (lc == null) {
  73                                 string s = Text;
  74                                 if (s.Length != 0) {
  75                                         Text = null;
  76                                         Controls.Add (new LiteralControl (s));
  77                                 }
  78                                 base.AddParsedSubObject (obj);
  79                         } else {
  80                                 Text = lc.Text;
  81                         }
  82                 }
  83
  84
  85                 [MonoTODO ("Why override?")]
  86                 protected override void LoadViewState (object savedState)
  87                 {
  88                         base.LoadViewState (savedState);
  89                 }
  90
  91 #if NET_2_0
  92                 protected internal
  93 #else
  94                 protected
  95 #endif
  96                 override void RenderContents (HtmlTextWriter w)
  97                 {
  98                         if (HasControls ())
  99                                 base.RenderContents (w);
 100                         else if (ImageUrl != "") {
 101                                 w.AddAttribute (HtmlTextWriterAttribute.Src, ResolveUrl (ImageUrl));
 102 #if NET_2_0
 103                                 string s = Text;
 104                                 if (s.Length > 0)
 105                                         w.AddAttribute (HtmlTextWriterAttribute.Alt, s);
 106                                 w.AddStyleAttribute (HtmlTextWriterStyle.BorderWidth, "0px");
 107 #else
 108                                 w.AddAttribute (HtmlTextWriterAttribute.Alt, Text);
 109                                 w.AddAttribute (HtmlTextWriterAttribute.Border, "0");
 110 #endif
 111                                 w.RenderBeginTag (HtmlTextWriterTag.Img);
 112                                 w.RenderEndTag ();
 113                         } else {
 114                                 w.Write (Text);
 115                         }
 116
 117                 }
 118
 119                 [Bindable(true)]
 120                 [DefaultValue("")]
 121                 [Editor("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof(System.Drawing.Design.UITypeEditor))]
 122 #if NET_2_0
 123                 [UrlProperty]
 124 #endif
 125                 [WebSysDescription ("")]
 126                 [WebCategory ("Appearance")]
 127                 public virtual string ImageUrl {
 128                         get {
 129                                 return ViewState.GetString ("ImageUrl", "");
 130                         }
 131                         set {
 132                                 ViewState ["ImageUrl"] = value;
 133                         }
 134                 }
 135
 136                 [Bindable(true)]
 137                 [DefaultValue("")]
 138                 [Editor("System.Web.UI.Design.UrlEditor, " + Consts.AssemblySystem_Design, typeof(System.Drawing.Design.UITypeEditor))]
 139 #if NET_2_0
 140                 [UrlProperty]
 141 #endif
 142                 [WebSysDescription ("")]
 143                 [WebCategory ("Navigation")]
 144                 public string NavigateUrl {
 145                         get {
 146                                 return ViewState.GetString ("NavigateUrl", "");
 147                         }
 148                         set {
 149                                 ViewState ["NavigateUrl"] = value;
 150                         }
 151                 }
 152
 153 #if ONLY_1_1
 154                 [Bindable(true)]
 155 #endif
 156                 [DefaultValue("")]
 157                 [TypeConverter(typeof(System.Web.UI.WebControls.TargetConverter))]
 158                 [WebSysDescription ("")]
 159                 [WebCategory ("Navigation")]
 160                 public string Target {
 161                         get {
 162                                 return ViewState.GetString ("Target", "");
 163                         }
 164                         set {
 165                                 ViewState ["Target"] = value;
 166                         }
 167                 }
 168
 169                 [Bindable(true)]
 170                 [DefaultValue("")]
 171                 [PersistenceMode(PersistenceMode.InnerDefaultProperty)]
 172 #if NET_2_0
 173                 [Localizable (true)]
 174 #endif
 175                 [WebSysDescription ("")]
 176                 [WebCategory ("Appearance")]
 177                 public virtual string Text {
 178                         get {
 179                                 return ViewState.GetString ("Text", "");
 180                         }
 181                         set {
 182                                 ViewState ["Text"] = value;
 183                                 if (HasControls ())
 184                                         Controls.Clear ();
 185                         }
 186                 }
 187         }
 188 }