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                 protected internal override bool IsEmpty {
  90                         get {
  91                                 return base.IsEmpty &&
  92                                        !IsSet(HORZ_PADD) &&
  93                                        !IsSet(VERT_PADD) &&
  94                                        !IsSet(SPACING);
  95                         }
  96                 }
  97
  98                 public override void CopyFrom (Style s)
  99                 {
 100                         if (s == null || s.IsEmpty)
 101                                 return;
 102
 103                         base.CopyFrom (s);
 104                         MenuItemStyle from = s as MenuItemStyle;
 105                         if (from == null)
 106                                 return;
 107
 108                         if (from.IsSet (HORZ_PADD))
 109                                 HorizontalPadding = from.HorizontalPadding;
 110
 111                         if (from.IsSet (SPACING))
 112                                 ItemSpacing = from.ItemSpacing;
 113
 114                         if (from.IsSet (VERT_PADD))
 115                                 VerticalPadding = from.VerticalPadding;
 116                 }
 117
 118                 public override void MergeWith(Style s)
 119                 {
 120                         if(s != null && !s.IsEmpty)
 121                         {
 122                                 if (IsEmpty) {
 123                                         CopyFrom (s);
 124                                         return;
 125                                 }
 126                                 base.MergeWith(s);
 127
 128                                 MenuItemStyle with = s as MenuItemStyle;
 129                                 if (with == null) return;
 130
 131                                 if (with.IsSet(HORZ_PADD) && !IsSet(HORZ_PADD)) {
 132                                         HorizontalPadding = with.HorizontalPadding;
 133                                 }
 134                                 if (with.IsSet(SPACING) && !IsSet(SPACING)) {
 135                                         ItemSpacing = with.ItemSpacing;
 136                                 }
 137                                 if (with.IsSet(VERT_PADD) && !IsSet(VERT_PADD)) {
 138                                         VerticalPadding = with.VerticalPadding;
 139                                 }
 140                         }
 141                 }
 142
 143                 public override void Reset()
 144                 {
 145                         if(IsSet(HORZ_PADD))
 146                                 ViewState.Remove("HorizontalPadding");
 147                         if(IsSet(SPACING))
 148                                 ViewState.Remove("ItemSpacing");
 149                         if(IsSet(VERT_PADD))
 150                                 ViewState.Remove("VerticalPadding");
 151                         base.Reset();
 152                 }
 153
 154                 protected override void FillStyleAttributes (CssStyleCollection attributes, IUrlResolutionService urlResolver)
 155                 {
 156                         base.FillStyleAttributes (attributes, urlResolver);
 157                         if (IsSet (HORZ_PADD)) {
 158                                 attributes.Add (HtmlTextWriterStyle.PaddingLeft, HorizontalPadding.ToString ());
 159                                 attributes.Add (HtmlTextWriterStyle.PaddingRight, HorizontalPadding.ToString ());
 160                         }
 161                         if (IsSet (VERT_PADD)) {
 162                                 attributes.Add (HtmlTextWriterStyle.PaddingTop, VerticalPadding.ToString ());
 163                                 attributes.Add (HtmlTextWriterStyle.PaddingBottom, VerticalPadding.ToString ());
 164                         }
 165                 }
 166         }
 167 }
 168
 169 #endif