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

   1 //
   2 // System.Web.UI.WebControls.TableItemStyle.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.Globalization;
  31 using System.Security.Permissions;
  32 using System.Web.UI;
  33
  34 namespace System.Web.UI.WebControls {
  35
  36         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  37         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  38         public class TableItemStyle : Style {
  39
  40                 [Flags]
  41                 enum TableItemStyles
  42                 {
  43                         HorizontalAlign = 0x00010000,
  44                         VerticalAlign = 0x00020000,
  45                         Wrap = 0x00040000,
  46                 }
  47
  48                 public TableItemStyle ()
  49                 {
  50                 }
  51
  52                 public TableItemStyle (StateBag bag)
  53                         : base (bag)
  54                 {
  55                 }
  56
  57                 [DefaultValue (HorizontalAlign.NotSet)]
  58                 [NotifyParentProperty (true)]
  59                 [WebSysDescription ("")]
  60                 [WebCategory("Layout")]
  61                 public virtual HorizontalAlign HorizontalAlign {
  62                         get {
  63                                 if (!CheckBit ((int) TableItemStyles.HorizontalAlign))
  64                                         return HorizontalAlign.NotSet;
  65                                 return (HorizontalAlign) ViewState ["HorizontalAlign"];
  66                         }
  67                         set {
  68                                 // avoid reflection
  69                                 if ((value < HorizontalAlign.NotSet) || (value > HorizontalAlign.Justify)) {
  70                                         // LAMESPEC: documented as ArgumentException
  71                                         throw new ArgumentOutOfRangeException (Locale.GetText ("Invalid HorizontalAlign value."));
  72                                 }
  73                                 ViewState ["HorizontalAlign"] = value;
  74                                 SetBit ((int) TableItemStyles.HorizontalAlign);
  75                         }
  76                 }
  77
  78                 [DefaultValue (VerticalAlign.NotSet)]
  79                 [NotifyParentProperty (true)]
  80                 [WebSysDescription ("")]
  81                 [WebCategory("Layout")]
  82                 public virtual VerticalAlign VerticalAlign {
  83                         get {
  84                                 if (!CheckBit ((int) TableItemStyles.VerticalAlign))
  85                                         return VerticalAlign.NotSet;
  86                                 return (VerticalAlign) ViewState ["VerticalAlign"];
  87                         }
  88                         set {
  89                                 // avoid reflection
  90                                 if ((value < VerticalAlign.NotSet) || (value > VerticalAlign.Bottom)) {
  91                                         // LAMESPEC: documented as ArgumentException
  92                                         throw new ArgumentOutOfRangeException (Locale.GetText ("Invalid VerticalAlign value."));
  93                                 }
  94                                 ViewState ["VerticalAlign"] = value;
  95                                 SetBit ((int) TableItemStyles.VerticalAlign);
  96                         }
  97                 }
  98
  99                 [DefaultValue (true)]
 100                 [NotifyParentProperty (true)]
 101                 [WebSysDescription ("")]
 102                 [WebCategory("Layout")]
 103                 public virtual bool Wrap {
 104                         get {
 105                                 if (!CheckBit ((int) TableItemStyles.Wrap))
 106                                         return true;
 107                                 return (bool) ViewState ["Wrap"];
 108                         }
 109                         set {
 110                                 ViewState ["Wrap"] = value;
 111                                 SetBit ((int) TableItemStyles.Wrap);
 112                         }
 113                 }
 114
 115
 116                 public override void AddAttributesToRender (HtmlTextWriter writer, WebControl owner)
 117                 {
 118                         base.AddAttributesToRender (writer, owner);
 119                         if (writer == null)
 120                                 return;
 121
 122                         // note: avoid ToString on the enum
 123                         switch (HorizontalAlign) {
 124                         case HorizontalAlign.Left:
 125                                 writer.AddAttribute (HtmlTextWriterAttribute.Align, "left", false);
 126                                 break;
 127                         case HorizontalAlign.Center:
 128                                 writer.AddAttribute (HtmlTextWriterAttribute.Align, "center", false);
 129                                 break;
 130                         case HorizontalAlign.Right:
 131                                 writer.AddAttribute (HtmlTextWriterAttribute.Align, "right", false);
 132                                 break;
 133                         case HorizontalAlign.Justify:
 134                                 writer.AddAttribute (HtmlTextWriterAttribute.Align, "justify", false);
 135                                 break;
 136                         }
 137
 138                         // note: avoid ToString on the enum
 139                         switch (VerticalAlign) {
 140                         case VerticalAlign.Top:
 141                                 writer.AddAttribute (HtmlTextWriterAttribute.Valign, "top", false);
 142                                 break;
 143                         case VerticalAlign.Middle:
 144                                 writer.AddAttribute (HtmlTextWriterAttribute.Valign, "middle", false);
 145                                 break;
 146                         case VerticalAlign.Bottom:
 147                                 writer.AddAttribute (HtmlTextWriterAttribute.Valign, "bottom", false);
 148                                 break;
 149                         }
 150
 151                         if (!Wrap) {
 152                                 writer.AddStyleAttribute (HtmlTextWriterStyle.WhiteSpace, "nowrap");
 153                         }
 154                 }
 155
 156                 void Copy (string name, TableItemStyles s, Style source)
 157                 {
 158                         if (source.CheckBit((int) s)) {
 159                                 object o = source.ViewState [name];
 160                                 if (o != null) {
 161                                         ViewState [name] = o;
 162                                         SetBit ((int) s);
 163                                 }
 164                         }
 165                 }
 166
 167                 public override void CopyFrom (Style s)
 168                 {
 169                         base.CopyFrom (s);
 170                         if (s != null && !s.IsEmpty) {
 171                                 Copy ("HorizontalAlign", TableItemStyles.HorizontalAlign, s);
 172                                 Copy ("VerticalAlign", TableItemStyles.VerticalAlign, s);
 173                                 Copy ("Wrap", TableItemStyles.Wrap, s);
 174                         }
 175                 }
 176
 177                 void Merge (string name, TableItemStyles s, Style source)
 178                 {
 179                         if ((!CheckBit ((int) s)) && (source.CheckBit ((int) s))) {
 180                                 object o = source.ViewState [name];
 181                                 if (o != null) {
 182                                         ViewState [name] = o;
 183                                         SetBit ((int) s);
 184                                 }
 185                         }
 186                 }
 187
 188                 public override void MergeWith (Style s)
 189                 {
 190                         // if we're empty then it's like a copy
 191                         if (IsEmpty) {
 192                                 CopyFrom (s);
 193                         } else {
 194                                 base.MergeWith (s);
 195                                 if (s != null) {
 196                                         Merge ("HorizontalAlign", TableItemStyles.HorizontalAlign, s);
 197                                         Merge ("VerticalAlign", TableItemStyles.VerticalAlign, s);
 198                                         Merge ("Wrap", TableItemStyles.Wrap, s);
 199                                 }
 200                         }
 201                 }
 202
 203                 public override void Reset ()
 204                 {
 205                         if (CheckBit ((int) TableItemStyles.HorizontalAlign))
 206                                 ViewState.Remove ("HorizontalAlign");
 207                         if (CheckBit ((int) TableItemStyles.VerticalAlign))
 208                                 ViewState.Remove ("VerticalAlign");
 209                         if (CheckBit ((int) TableItemStyles.Wrap))
 210                                 ViewState.Remove ("Wrap");
 211                         // call base at the end because "styles" will reset there
 212                         base.Reset ();
 213                 }
 214         }
 215 }