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

   1 //
   2 // System.Web.UI.WebControls.MenuItemStyle.cs
   3 //
   4 // Authors:
   5 //      Lluis Sanchez Gual (lluis@novell.com)
   6 //
   7 // (C) 2004 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 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  29 //
  30
  31 #if NET_2_0
  32
  33 using System;
  34 using System.Web.UI;
  35 using System.ComponentModel;
  36
  37 namespace System.Web.UI.WebControls
  38 {
  39         public sealed class MenuItemStyle: Style
  40         {
  41                 private const string HORZ_PADD = "HorizontalPadding";
  42                 private const string SPACING = "ItemSpacing";
  43                 private const string VERT_PADD = "VerticalPadding";
  44
  45                 bool IsSet (string v)
  46                 {
  47                         return ViewState [v] != null;
  48                 }
  49
  50                 [DefaultValue (typeof (Unit), "")]
  51                 [NotifyParentProperty (true)]
  52                 public Unit HorizontalPadding {
  53                         get {
  54                                 if(IsSet(HORZ_PADD))
  55                                         return (Unit)(ViewState["HorizontalPadding"]);
  56                                 return Unit.Empty;
  57                         }
  58                         set {
  59                                 ViewState["HorizontalPadding"] = value;
  60                         }
  61                 }
  62
  63                 [DefaultValue (typeof (Unit), "")]
  64                 [NotifyParentProperty (true)]
  65                 public Unit VerticalPadding {
  66                         get {
  67                                 if(IsSet(VERT_PADD))
  68                                         return (Unit)(ViewState["VerticalPadding"]);
  69                                 return Unit.Empty;
  70                         }
  71                         set {
  72                                 ViewState["VerticalPadding"] = value;
  73                         }
  74                 }
  75
  76                 [DefaultValue (typeof (Unit), "")]
  77                 [NotifyParentProperty (true)]
  78                 public Unit ItemSpacing {
  79                         get {
  80                                 if(IsSet(SPACING))
  81                                         return (Unit)(ViewState["ItemSpacing"]);
  82                                 return Unit.Empty;
  83                         }
  84                         set {
  85                                 ViewState["ItemSpacing"] = value;
  86                         }
  87                 }
  88
  89                 // FIXME: shouldn't be part of the public API
  90                 public override bool IsEmpty {
  91                         get {
  92                                 return base.IsEmpty &&
  93                                        !IsSet(HORZ_PADD) &&
  94                                        !IsSet(VERT_PADD) &&
  95                                        !IsSet(SPACING);
  96                         }
  97                 }
  98
  99                 public override void CopyFrom (Style s)
 100                 {
 101                         if (s == null || s.IsEmpty)
 102                                 return;
 103
 104                         base.CopyFrom (s);
 105                         MenuItemStyle from = s as MenuItemStyle;
 106                         if (from == null)
 107                                 return;
 108
 109                         if (from.IsSet (HORZ_PADD))
 110                                 HorizontalPadding = from.HorizontalPadding;
 111
 112                         if (from.IsSet (SPACING))
 113                                 ItemSpacing = from.ItemSpacing;
 114
 115                         if (from.IsSet (VERT_PADD))
 116                                 VerticalPadding = from.VerticalPadding;
 117                 }
 118
 119                 public override void MergeWith(Style s)
 120                 {
 121                         if(s != null && !s.IsEmpty)
 122                         {
 123                                 if (IsEmpty) {
 124                                         CopyFrom (s);
 125                                         return;
 126                                 }
 127                                 base.MergeWith(s);
 128
 129                                 MenuItemStyle with = s as MenuItemStyle;
 130                                 if (with == null) return;
 131
 132                                 if (with.IsSet(HORZ_PADD) && !IsSet(HORZ_PADD)) {
 133                                         HorizontalPadding = with.HorizontalPadding;
 134                                 }
 135                                 if (with.IsSet(SPACING) && !IsSet(SPACING)) {
 136                                         ItemSpacing = with.ItemSpacing;
 137                                 }
 138                                 if (with.IsSet(VERT_PADD) && !IsSet(VERT_PADD)) {
 139                                         VerticalPadding = with.VerticalPadding;
 140                                 }
 141                         }
 142                 }
 143
 144                 public override void Reset()
 145                 {
 146                         if(IsSet(HORZ_PADD))
 147                                 ViewState.Remove("HorizontalPadding");
 148                         if(IsSet(SPACING))
 149                                 ViewState.Remove("ItemSpacing");
 150                         if(IsSet(VERT_PADD))
 151                                 ViewState.Remove("VerticalPadding");
 152                         base.Reset();
 153                 }
 154
 155                 protected override void FillStyleAttributes (CssStyleCollection attributes, IUrlResolutionService urlResolver)
 156                 {
 157                         base.FillStyleAttributes (attributes, urlResolver);
 158                         if (IsSet (HORZ_PADD)) {
 159                                 attributes.Add (HtmlTextWriterStyle.PaddingLeft, HorizontalPadding.ToString ());
 160                                 attributes.Add (HtmlTextWriterStyle.PaddingRight, HorizontalPadding.ToString ());
 161                         }
 162                         if (IsSet (VERT_PADD)) {
 163                                 attributes.Add (HtmlTextWriterStyle.PaddingTop, VerticalPadding.ToString ());
 164                                 attributes.Add (HtmlTextWriterStyle.PaddingBottom, VerticalPadding.ToString ());
 165                         }
 166                 }
 167         }
 168 }
 169
 170 #endif