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

   1 //
   2 // System.Web.UI.WebControls.TreeNodeStyle.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 TreeNodeStyle: Style
  40         {
  41                 private const string CHILD_PADD = "ChildNodesPadding";
  42                 private const string HORZ_PADD = "HorizontalPadding";
  43                 private const string IMG_URL = "ImageUrl";
  44                 private const string SPACING = "NodeSpacing";
  45                 private const string VERT_PADD = "VerticalPadding";
  46
  47                 bool IsSet (string v)
  48                 {
  49                         return ViewState [v] != null;
  50                 }
  51
  52                 [DefaultValue ("")]
  53                 [UrlProperty]
  54                 [NotifyParentProperty (true)]
  55                 [Editor ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
  56                 public string ImageUrl {
  57                         get {
  58                                 return ViewState.GetString (IMG_URL, String.Empty);
  59                         }
  60                         set {
  61                                 if(value == null)
  62                                         throw new ArgumentNullException("value");
  63                                 ViewState [IMG_URL] = value;
  64                         }
  65                 }
  66
  67                 [DefaultValue (0)]
  68                 [NotifyParentProperty (true)]
  69                 public int ChildNodesPadding {
  70                         get {
  71                                 return ViewState.GetInt (CHILD_PADD, 0);
  72                         }
  73                         set {
  74                                 ViewState [CHILD_PADD] = value;
  75                         }
  76                 }
  77
  78                 [DefaultValue (0)]
  79                 [NotifyParentProperty (true)]
  80                 public int HorizontalPadding {
  81                         get {
  82                                 return ViewState.GetInt (HORZ_PADD, 0);
  83                         }
  84                         set {
  85                                 ViewState[HORZ_PADD] = value;
  86                         }
  87                 }
  88
  89                 [DefaultValue (0)]
  90                 [NotifyParentProperty (true)]
  91                 public int VerticalPadding {
  92                         get {
  93                                 return ViewState.GetInt (VERT_PADD, 0);
  94                         }
  95                         set {
  96                                 ViewState [VERT_PADD] = value;
  97                         }
  98                 }
  99
 100                 [DefaultValue (0)]
 101                 [NotifyParentProperty (true)]
 102                 public int NodeSpacing {
 103                         get {
 104                                 return ViewState.GetInt (SPACING, 0);
 105                         }
 106                         set {
 107                                 ViewState [SPACING] = value;
 108                         }
 109                 }
 110
 111                 // FIXME: shouldn't be part of the public API
 112                 public override bool IsEmpty {
 113                         get {
 114                                 return (base.IsEmpty &&
 115                                         !IsSet (CHILD_PADD) &&
 116                                         !IsSet (HORZ_PADD) &&
 117                                         !IsSet (IMG_URL) &&
 118                                         !IsSet (SPACING) &&
 119                                         !IsSet (VERT_PADD));
 120                         }
 121                 }
 122
 123                 public override void CopyFrom (Style s)
 124                 {
 125                         if (s == null || s.IsEmpty)
 126                                 return;
 127
 128                         base.CopyFrom (s);
 129                         TreeNodeStyle from = s as TreeNodeStyle;
 130                         if (from == null)
 131                                 return;
 132
 133                         if (from.IsSet (CHILD_PADD))
 134                                 ChildNodesPadding = from.ChildNodesPadding;
 135
 136                         if (from.IsSet (HORZ_PADD))
 137                                 HorizontalPadding = from.HorizontalPadding;
 138
 139                         if (from.IsSet (IMG_URL))
 140                                 ImageUrl = from.ImageUrl;
 141
 142                         if (from.IsSet (SPACING))
 143                                 NodeSpacing = from.NodeSpacing;
 144
 145                         if (from.IsSet (VERT_PADD))
 146                                 VerticalPadding = from.VerticalPadding;
 147                 }
 148
 149                 public override void MergeWith(Style s)
 150                 {
 151                         if(s != null && !s.IsEmpty)
 152                         {
 153                                 if (IsEmpty) {
 154                                         CopyFrom (s);
 155                                         return;
 156                                 }
 157                                 base.MergeWith(s);
 158
 159                                 TreeNodeStyle with = s as TreeNodeStyle;
 160                                 if (with == null) return;
 161
 162                                 if (with.IsSet(CHILD_PADD) && !IsSet(CHILD_PADD)) {
 163                                         ChildNodesPadding = with.ChildNodesPadding;
 164                                 }
 165                                 if (with.IsSet(HORZ_PADD) && !IsSet(HORZ_PADD)) {
 166                                         HorizontalPadding = with.HorizontalPadding;
 167                                 }
 168                                 if (with.IsSet(IMG_URL) && !IsSet(IMG_URL)) {
 169                                         ImageUrl = with.ImageUrl;
 170                                 }
 171                                 if (with.IsSet(SPACING) && !IsSet(SPACING)) {
 172                                         NodeSpacing = with.NodeSpacing;
 173                                 }
 174                                 if (with.IsSet(VERT_PADD) && !IsSet(VERT_PADD)) {
 175                                         VerticalPadding = with.VerticalPadding;
 176                                 }
 177                         }
 178                 }
 179
 180                 public override void Reset()
 181                 {
 182                         if(IsSet(CHILD_PADD))
 183                                 ViewState.Remove("ChildNodesPadding");
 184                         if(IsSet(HORZ_PADD))
 185                                 ViewState.Remove("HorizontalPadding");
 186                         if(IsSet(IMG_URL))
 187                                 ViewState.Remove("ImageUrl");
 188                         if(IsSet(SPACING))
 189                                 ViewState.Remove("NodeSpacing");
 190                         if(IsSet(VERT_PADD))
 191                                 ViewState.Remove("VerticalPadding");
 192                         base.Reset();
 193                 }
 194         }
 195 }
 196
 197 #endif