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
  36 namespace System.Web.UI.WebControls
  37 {
  38         public sealed class TreeNodeStyle: Style
  39         {
  40                 private static int CHILD_PADD = (0x01 << 16);
  41                 private static int HORZ_PADD = (0x01 << 17);
  42                 private static int IMG_URL = (0x01 << 18);
  43                 private static int SPACING = (0x01 << 19);
  44                 private static int VERT_PADD = (0x01 << 20);
  45
  46                 public string ImageUrl {
  47                         get {
  48                                 if(IsSet(IMG_URL))
  49                                         return (string)(ViewState["ImageUrl"]);
  50                                 return String.Empty;
  51                         }
  52                         set {
  53                                 if(value == null)
  54                                         throw new ArgumentNullException("value");
  55                                 ViewState["ImageUrl"] = value;
  56                                 Set(IMG_URL);
  57                         }
  58                 }
  59
  60                 public int ChildNodesPadding {
  61                         get {
  62                                 if(IsSet(CHILD_PADD))
  63                                         return (int)(ViewState["ChildNodesPadding"]);
  64                                 return 0;
  65                         }
  66                         set {
  67                                 ViewState["ChildNodesPadding"] = value;
  68                                 Set(CHILD_PADD);
  69                         }
  70                 }
  71
  72                 public int HorizontalPadding {
  73                         get {
  74                                 if(IsSet(HORZ_PADD))
  75                                         return (int)(ViewState["HorizontalPadding"]);
  76                                 return 0;
  77                         }
  78                         set {
  79                                 ViewState["HorizontalPadding"] = value;
  80                                 Set(HORZ_PADD);
  81                         }
  82                 }
  83
  84                 public int VerticalPadding {
  85                         get {
  86                                 if(IsSet(VERT_PADD))
  87                                         return (int)(ViewState["VerticalPadding"]);
  88                                 return 0;
  89                         }
  90                         set {
  91                                 ViewState["VerticalPadding"] = value;
  92                                 Set(VERT_PADD);
  93                         }
  94                 }
  95
  96                 public int NodeSpacing {
  97                         get {
  98                                 if(IsSet(SPACING))
  99                                         return (int)(ViewState["NodeSpacing"]);
 100                                 return 0;
 101                         }
 102                         set {
 103                                 ViewState["NodeSpacing"] = value;
 104                                 Set(SPACING);
 105                         }
 106                 }
 107
 108                 protected internal override bool IsEmpty {
 109                         get { return base.IsEmpty; }
 110                 }
 111
 112                 public override void CopyFrom (Style s)
 113                 {
 114                         if (s == null || s.IsEmpty)
 115                                 return;
 116
 117                         base.CopyFrom (s);
 118                         TreeNodeStyle from = s as TreeNodeStyle;
 119                         if (from == null)
 120                                 return;
 121
 122                         if (from.IsSet (CHILD_PADD))
 123                                 ChildNodesPadding = from.ChildNodesPadding;
 124
 125                         if (from.IsSet (HORZ_PADD))
 126                                 HorizontalPadding = from.HorizontalPadding;
 127
 128                         if (from.IsSet (IMG_URL))
 129                                 ImageUrl = from.ImageUrl;
 130
 131                         if (from.IsSet (SPACING))
 132                                 NodeSpacing = from.NodeSpacing;
 133
 134                         if (from.IsSet (VERT_PADD))
 135                                 VerticalPadding = from.VerticalPadding;
 136                 }
 137
 138                 public override void MergeWith(Style s)
 139                 {
 140                         if(s != null && !s.IsEmpty)
 141                         {
 142                                 if (IsEmpty) {
 143                                         CopyFrom (s);
 144                                         return;
 145                                 }
 146                                 base.MergeWith(s);
 147
 148                                 TreeNodeStyle with = s as TreeNodeStyle;
 149                                 if (with == null) return;
 150
 151                                 if (with.IsSet(CHILD_PADD) && !IsSet(CHILD_PADD)) {
 152                                         ChildNodesPadding = with.ChildNodesPadding;
 153                                 }
 154                                 if (with.IsSet(HORZ_PADD) && !IsSet(HORZ_PADD)) {
 155                                         HorizontalPadding = with.HorizontalPadding;
 156                                 }
 157                                 if (with.IsSet(IMG_URL) && !IsSet(IMG_URL)) {
 158                                         ImageUrl = with.ImageUrl;
 159                                 }
 160                                 if (with.IsSet(SPACING) && !IsSet(SPACING)) {
 161                                         NodeSpacing = with.NodeSpacing;
 162                                 }
 163                                 if (with.IsSet(VERT_PADD) && !IsSet(VERT_PADD)) {
 164                                         VerticalPadding = with.VerticalPadding;
 165                                 }
 166                         }
 167                 }
 168
 169                 public override void Reset()
 170                 {
 171                         if(IsSet(CHILD_PADD))
 172                                 ViewState.Remove("ChildNodesPadding");
 173                         if(IsSet(HORZ_PADD))
 174                                 ViewState.Remove("HorizontalPadding");
 175                         if(IsSet(IMG_URL))
 176                                 ViewState.Remove("ImageUrl");
 177                         if(IsSet(SPACING))
 178                                 ViewState.Remove("NodeSpacing");
 179                         if(IsSet(VERT_PADD))
 180                                 ViewState.Remove("VerticalPadding");
 181                         base.Reset();
 182                 }
 183         }
 184 }
 185
 186 #endif