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         public class Panel : WebControl {
  45
  46                 public Panel () : base (HtmlTextWriterTag.Div)
  47                 {
  48                 }
  49
  50                 protected override void AddAttributesToRender (HtmlTextWriter w)
  51                 {
  52                         base.AddAttributesToRender (w);
  53
  54                         string image = BackImageUrl;
  55                         if (image != "") {
  56                                 image = ResolveClientUrl (image);
  57                                 w.AddStyleAttribute (HtmlTextWriterStyle.BackgroundImage, image);
  58                         }
  59
  60                         if (!String.IsNullOrEmpty (DefaultButton) && Page != null) {
  61                                 Control button = FindControl (DefaultButton);
  62                                 if (button == null || !(button is IButtonControl))
  63                                         throw new InvalidOperationException (String.Format ("The DefaultButton of '{0}' must be the ID of a control of type IButtonControl.", ID));
  64
  65                                 Page.ClientScript.RegisterWebFormClientScript ();
  66
  67                                 w.AddAttribute ("onkeypress",
  68                                                 "javascript:return " + Page.WebFormScriptReference + ".WebForm_FireDefaultButton(event, '" + button.ClientID + "')");
  69                         }
  70
  71                         if (Direction != ContentDirection.NotSet) {
  72                                 w.AddAttribute (HtmlTextWriterAttribute.Dir, Direction == ContentDirection.RightToLeft ? "rtl" : "ltr", false);
  73                         }
  74
  75                         switch (ScrollBars) {
  76                         case ScrollBars.Auto:
  77                                 w.AddStyleAttribute (HtmlTextWriterStyle.Overflow, "auto");
  78                                 break;
  79                         case ScrollBars.Both:
  80                                 w.AddStyleAttribute (HtmlTextWriterStyle.Overflow, "scroll");
  81                                 break;
  82                         case ScrollBars.Horizontal:
  83                                 w.AddStyleAttribute (HtmlTextWriterStyle.OverflowX, "scroll");
  84                                 break;
  85                         case ScrollBars.Vertical:
  86                                 w.AddStyleAttribute (HtmlTextWriterStyle.OverflowY, "scroll");
  87                                 break;
  88                         }
  89
  90
  91                         if (!Wrap) {
  92                                 w.AddStyleAttribute (HtmlTextWriterStyle.WhiteSpace, "nowrap");
  93                         }
  94
  95                         string align = "";
  96
  97                         switch (HorizontalAlign) {
  98                         case HorizontalAlign.Center: align = "center"; break;
  99                         case HorizontalAlign.Justify: align = "justify"; break;
 100                         case HorizontalAlign.Left: align = "left"; break;
 101                         case HorizontalAlign.Right: align = "right"; break;
 102                         }
 103
 104                         if (align != "")
 105                                 w.AddStyleAttribute (HtmlTextWriterStyle.TextAlign, align);
 106                 }
 107                 PanelStyle PanelStyle {
 108                         get { return (ControlStyle as PanelStyle); }
 109                 }
 110
 111                 [UrlProperty]
 112                 [DefaultValue ("")]
 113                 [Editor ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
 114                 [WebSysDescription ("")]
 115                 [WebCategory ("Appearance")]
 116                 public virtual string BackImageUrl {
 117                         get {
 118                                 if (ControlStyleCreated) {
 119                                         if (PanelStyle != null)
 120                                                 return PanelStyle.BackImageUrl;
 121                                         else
 122                                                 return ViewState.GetString ("BackImageUrl", String.Empty);
 123                                 }
 124                                 return String.Empty;
 125                         }
 126                         set {
 127                                 if(PanelStyle!=null)
 128                                         PanelStyle.BackImageUrl = value;
 129                                 else
 130                                         ViewState ["BackImageUrl"] = value;
 131                         }
 132                 }
 133
 134                 [DefaultValue (HorizontalAlign.NotSet)]
 135                 [WebSysDescription ("")]
 136                 [WebCategory ("Layout")]
 137                 public virtual HorizontalAlign HorizontalAlign {
 138                         get {
 139                                 if (ControlStyleCreated) {
 140                                         if (PanelStyle != null)
 141                                                 return PanelStyle.HorizontalAlign;
 142                                         else
 143                                                 return ViewState ["HorizontalAlign"] != null ? (HorizontalAlign) ViewState ["HorizontalAlign"] : HorizontalAlign.NotSet;
 144                                 }
 145                                 return HorizontalAlign.NotSet;
 146                         }
 147                         set {
 148                                 if (PanelStyle != null)
 149                                         PanelStyle.HorizontalAlign = value;
 150                                 else
 151                                         ViewState ["HorizontalAlign"] = value;
 152                         }
 153                 }
 154
 155                 [DefaultValue (true)]
 156                 [WebSysDescription ("")]
 157                 [WebCategory ("Layout")]
 158                 public virtual bool Wrap {
 159                         get {
 160                                 if (ControlStyleCreated) {
 161                                         if (PanelStyle != null)
 162                                                 return PanelStyle.Wrap;
 163                                         else
 164                                                 return ViewState.GetBool ("Wrap", true);
 165                                 }
 166                                 return true;
 167                         }
 168                         set {
 169                                 if (PanelStyle != null)
 170                                         PanelStyle.Wrap = value;
 171                                 else
 172                                         ViewState ["Wrap"] = value;
 173                         }
 174                 }
 175
 176                 [ThemeableAttribute (false)]
 177                 [DefaultValue ("")]
 178                 public virtual string DefaultButton {
 179                         get {
 180                                 return ViewState.GetString ("DefaultButton", String.Empty);
 181                         }
 182                         set {
 183                                 ViewState ["DefaultButton"] = value;
 184                         }
 185                 }
 186
 187                 [DefaultValue (ContentDirection.NotSet)]
 188                 public virtual ContentDirection Direction {
 189                         get {
 190                                 if (ControlStyleCreated) {
 191                                         if (PanelStyle != null)
 192                                                 return PanelStyle.Direction;
 193                                         else
 194                                                 return ViewState ["Direction"] != null ? (ContentDirection) ViewState ["Direction"] : ContentDirection.NotSet;
 195                                 }
 196                                 return ContentDirection.NotSet;
 197                         }
 198                         set {
 199                                 if (PanelStyle != null)
 200                                         PanelStyle.Direction = value;
 201                                 else
 202                                         ViewState ["Direction"] = value;
 203                         }
 204                 }
 205
 206                 [LocalizableAttribute (true)]
 207                 [DefaultValue ("")]
 208                 public virtual string GroupingText {
 209                         get {
 210                                 return ViewState.GetString ("GroupingText", String.Empty);
 211                         }
 212                         set {
 213                                 ViewState ["GroupingText"] = value;
 214                         }
 215                 }
 216
 217                 [DefaultValue (ScrollBars.None)]
 218                 public virtual ScrollBars ScrollBars {
 219                         get {
 220                                 if (ControlStyleCreated) {
 221                                         if (PanelStyle != null)
 222                                                 return PanelStyle.ScrollBars;
 223                                         else
 224                                                 return ViewState ["ScrollBars"] != null ? (ScrollBars) ViewState ["Direction"] : ScrollBars.None;
 225                                 }
 226                                 return ScrollBars.None;
 227                         }
 228                         set {
 229                                 if (PanelStyle != null)
 230                                         PanelStyle.ScrollBars = value;
 231                                 else
 232                                         ViewState ["ScrollBars"] = value;
 233                         }
 234                 }
 235                 public override bool SupportsDisabledAttribute {
 236                         get { return RenderingCompatibilityLessThan40; }
 237                 }
 238                 protected override Style CreateControlStyle ()
 239                 {
 240                         return new PanelStyle (ViewState);
 241                 }
 242
 243                 public override void RenderBeginTag (HtmlTextWriter writer)
 244                 {
 245                         base.RenderBeginTag (writer);
 246                         if (!String.IsNullOrEmpty (GroupingText)) {
 247                                 writer.RenderBeginTag (HtmlTextWriterTag.Fieldset);
 248                                 writer.RenderBeginTag (HtmlTextWriterTag.Legend);
 249                                 writer.Write (GroupingText);
 250                                 writer.RenderEndTag ();
 251                         }
 252                 }
 253
 254                 public override void RenderEndTag (HtmlTextWriter writer)
 255                 {
 256                         if (!String.IsNullOrEmpty (GroupingText)) {
 257                                 writer.RenderEndTag (); // Fieldset
 258                         }
 259                         base.RenderEndTag (writer);
 260                 }
 261         }
 262 }