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

   1 //
   2 // System.Web.UI.WebControls.Panel.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 // What to do in AddParsedSubObject
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.ComponentModel;
  33 using System.Security.Permissions;
  34
  35 namespace System.Web.UI.WebControls {
  36
  37         // CAS
  38         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  39         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  40         // attributes
  41         [Designer ("System.Web.UI.Design.WebControls.PanelDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  42         [ParseChildren (false)]
  43         [PersistChildren (true)]
  44         [ToolboxData ("<{0}:Panel runat=server>Panel</{0}:Panel>")]
  45         public class Panel : WebControl {
  46
  47                 public Panel () : base (HtmlTextWriterTag.Div)
  48                 {
  49                 }
  50
  51                 protected override void AddAttributesToRender (HtmlTextWriter w)
  52                 {
  53                         base.AddAttributesToRender (w);
  54
  55                         string image = BackImageUrl;
  56                         if (image != "") {
  57                                 image = ResolveClientUrl (image);
  58 #if !NET_2_0 // see HtmlTextWriter.WriteStyleAttribute(string, string, bool)
  59                                 image = String.Concat ("url(", image, ")");
  60 #endif
  61                                 w.AddStyleAttribute (HtmlTextWriterStyle.BackgroundImage, image);
  62                         }
  63
  64 #if NET_2_0
  65                         if (!String.IsNullOrEmpty (DefaultButton) && Page != null) {
  66                                 Control button = FindControl (DefaultButton);
  67                                 if (button == null || !(button is IButtonControl))
  68                                         throw new InvalidOperationException (String.Format ("The DefaultButton of '{0}' must be the ID of a control of type IButtonControl.", ID));
  69
  70                                 Page.ClientScript.RegisterWebFormClientScript ();
  71
  72                                 w.AddAttribute ("onkeypress",
  73                                                 "javascript:return " + Page.WebFormScriptReference + ".WebForm_FireDefaultButton(event, '" + button.ClientID + "')");
  74                         }
  75
  76                         if (Direction != ContentDirection.NotSet) {
  77                                 w.AddAttribute (HtmlTextWriterAttribute.Dir, Direction == ContentDirection.RightToLeft ? "rtl" : "ltr", false);
  78                         }
  79
  80                         switch (ScrollBars) {
  81                         case ScrollBars.Auto:
  82                                 w.AddStyleAttribute (HtmlTextWriterStyle.Overflow, "auto");
  83                                 break;
  84                         case ScrollBars.Both:
  85                                 w.AddStyleAttribute (HtmlTextWriterStyle.Overflow, "scroll");
  86                                 break;
  87                         case ScrollBars.Horizontal:
  88                                 w.AddStyleAttribute (HtmlTextWriterStyle.OverflowX, "scroll");
  89                                 break;
  90                         case ScrollBars.Vertical:
  91                                 w.AddStyleAttribute (HtmlTextWriterStyle.OverflowY, "scroll");
  92                                 break;
  93                         }
  94
  95 #endif
  96
  97                         if (!Wrap) {
  98 #if NET_2_0
  99                                 w.AddStyleAttribute (HtmlTextWriterStyle.WhiteSpace, "nowrap");
 100 #else
 101                                 w.AddAttribute (HtmlTextWriterAttribute.Nowrap, "nowrap");
 102 #endif
 103                         }
 104
 105                         string align = "";
 106
 107                         switch (HorizontalAlign) {
 108                         case HorizontalAlign.Center: align = "center"; break;
 109                         case HorizontalAlign.Justify: align = "justify"; break;
 110                         case HorizontalAlign.Left: align = "left"; break;
 111                         case HorizontalAlign.Right: align = "right"; break;
 112                         }
 113
 114                         if (align != "")
 115 #if NET_2_0
 116                                 w.AddStyleAttribute (HtmlTextWriterStyle.TextAlign, align);
 117 #else
 118                                 w.AddAttribute (HtmlTextWriterAttribute.Align, align);
 119 #endif
 120                 }
 121
 122 #if !NET_2_0
 123                 [Bindable(true)]
 124                 [DefaultValue("")]
 125                 [Editor("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof(System.Drawing.Design.UITypeEditor))]
 126                 [WebSysDescription ("")]
 127                 [WebCategory ("Appearance")]
 128                 public virtual string BackImageUrl {
 129                         get {
 130                                 return ViewState.GetString ("BackImageUrl", "");
 131                         }
 132
 133                         set {
 134                                 ViewState ["BackImageUrl"] = value;
 135                         }
 136                 }
 137
 138                 [Bindable(true)]
 139                 [DefaultValue(HorizontalAlign.NotSet)]
 140                 [WebSysDescription ("")]
 141                 [WebCategory ("Layout")]
 142                 public virtual HorizontalAlign HorizontalAlign {
 143                         get {
 144                                 return (HorizontalAlign) ViewState.GetInt ("HorizontalAlign", (int) HorizontalAlign.NotSet);
 145                         }
 146                         set {
 147                                 ViewState ["HorizontalAlign"] = (int) value;
 148                         }
 149                 }
 150
 151                 [Bindable(true)]
 152                 [DefaultValue(true)]
 153                 [WebSysDescription ("")]
 154                 [WebCategory ("Layout")]
 155                 public virtual bool Wrap {
 156                         get {
 157                                 return ViewState.GetBool ("Wrap", true);
 158                         }
 159                         set {
 160                                 ViewState ["Wrap"] = value;
 161                         }
 162                 }
 163 #endif
 164
 165 #if NET_2_0
 166                 PanelStyle PanelStyle {
 167                         get { return (ControlStyle as PanelStyle); }
 168                 }
 169
 170                 [Bindable (true)]
 171                 [DefaultValue ("")]
 172                 [Editor ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
 173                 [WebSysDescription ("")]
 174                 [WebCategory ("Appearance")]
 175                 public virtual string BackImageUrl {
 176                         get {
 177                                 if (ControlStyleCreated) {
 178                                         if (PanelStyle != null)
 179                                                 return PanelStyle.BackImageUrl;
 180                                         else
 181                                                 return ViewState.GetString ("BackImageUrl", String.Empty);
 182                                 }
 183                                 return String.Empty;
 184                         }
 185                         set {
 186                                 if(PanelStyle!=null)
 187                                         PanelStyle.BackImageUrl = value;
 188                                 else
 189                                         ViewState ["BackImageUrl"] = value;
 190                         }
 191                 }
 192
 193                 [Bindable (true)]
 194                 [DefaultValue (HorizontalAlign.NotSet)]
 195                 [WebSysDescription ("")]
 196                 [WebCategory ("Layout")]
 197                 public virtual HorizontalAlign HorizontalAlign {
 198                         get {
 199                                 if (ControlStyleCreated) {
 200                                         if (PanelStyle != null)
 201                                                 return PanelStyle.HorizontalAlign;
 202                                         else
 203                                                 return ViewState ["HorizontalAlign"] != null ? (HorizontalAlign) ViewState ["HorizontalAlign"] : HorizontalAlign.NotSet;
 204                                 }
 205                                 return HorizontalAlign.NotSet;
 206                         }
 207                         set {
 208                                 if (PanelStyle != null)
 209                                         PanelStyle.HorizontalAlign = value;
 210                                 else
 211                                         ViewState ["HorizontalAlign"] = value;
 212                         }
 213                 }
 214
 215                 [Bindable (true)]
 216                 [DefaultValue (true)]
 217                 [WebSysDescription ("")]
 218                 [WebCategory ("Layout")]
 219                 public virtual bool Wrap {
 220                         get {
 221                                 if (ControlStyleCreated) {
 222                                         if (PanelStyle != null)
 223                                                 return PanelStyle.Wrap;
 224                                         else
 225                                                 return ViewState.GetBool ("Wrap", true);
 226                                 }
 227                                 return true;
 228                         }
 229                         set {
 230                                 if (PanelStyle != null)
 231                                         PanelStyle.Wrap = value;
 232                                 else
 233                                         ViewState ["Wrap"] = value;
 234                         }
 235                 }
 236
 237                 [ThemeableAttribute (false)]
 238                 public virtual string DefaultButton {
 239                         get {
 240                                 return ViewState.GetString ("DefaultButton", String.Empty);
 241                         }
 242                         set {
 243                                 ViewState ["DefaultButton"] = value;
 244                         }
 245                 }
 246
 247                 public virtual ContentDirection Direction {
 248                         get {
 249                                 if (ControlStyleCreated) {
 250                                         if (PanelStyle != null)
 251                                                 return PanelStyle.Direction;
 252                                         else
 253                                                 return ViewState ["Direction"] != null ? (ContentDirection) ViewState ["Direction"] : ContentDirection.NotSet;
 254                                 }
 255                                 return ContentDirection.NotSet;
 256                         }
 257                         set {
 258                                 if (PanelStyle != null)
 259                                         PanelStyle.Direction = value;
 260                                 else
 261                                         ViewState ["Direction"] = value;
 262                         }
 263                 }
 264
 265                 [LocalizableAttribute (true)]
 266                 public virtual string GroupingText {
 267                         get {
 268                                 return ViewState.GetString ("GroupingText", String.Empty);
 269                         }
 270                         set {
 271                                 ViewState ["GroupingText"] = value;
 272                         }
 273                 }
 274
 275                 public virtual ScrollBars ScrollBars {
 276                         get {
 277                                 if (ControlStyleCreated) {
 278                                         if (PanelStyle != null)
 279                                                 return PanelStyle.ScrollBars;
 280                                         else
 281                                                 return ViewState ["ScrollBars"] != null ? (ScrollBars) ViewState ["Direction"] : ScrollBars.None;
 282                                 }
 283                                 return ScrollBars.None;
 284                         }
 285                         set {
 286                                 if (PanelStyle != null)
 287                                         PanelStyle.ScrollBars = value;
 288                                 else
 289                                         ViewState ["ScrollBars"] = value;
 290                         }
 291                 }
 292
 293                 protected override Style CreateControlStyle ()
 294                 {
 295                         return new PanelStyle (ViewState);
 296                 }
 297
 298                 public override void RenderBeginTag (HtmlTextWriter writer)
 299                 {
 300                         base.RenderBeginTag (writer);
 301                         if (!String.IsNullOrEmpty (GroupingText)) {
 302                                 writer.RenderBeginTag (HtmlTextWriterTag.Fieldset);
 303                                 writer.RenderBeginTag (HtmlTextWriterTag.Legend);
 304                                 writer.Write (GroupingText);
 305                                 writer.RenderEndTag ();
 306                         }
 307                 }
 308
 309                 public override void RenderEndTag (HtmlTextWriter writer)
 310                 {
 311                         if (!String.IsNullOrEmpty (GroupingText)) {
 312                                 writer.RenderEndTag (); // Fieldset
 313                         }
 314                         base.RenderEndTag (writer);
 315                 }
 316 #endif
 317         }
 318 }