mcs/class/System.Windows.Forms/System.Windows.Forms.Layout/TableLayoutSettingsTypeConverter.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining\r
   2 // a copy of this software and associated documentation files (the\r
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   5 // distribute, sublicense, and/or sell copies of the Software, and to\r
   6 // permit persons to whom the Software is furnished to do so, subject to\r
   7 // the following conditions:\r
   8 // \r
   9 // The above copyright notice and this permission notice shall be\r
  10 // included in all copies or substantial portions of the Software.\r
  11 // \r
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\r
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\r
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE\r
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION\r
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION\r
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  19 //\r
  20 // Copyright (c) 2006 Novell, Inc.\r
  21 //\r
  22 \r
  23 \r
  24 using System;\r
  25 using System.ComponentModel;\r
  26 using System.Drawing;\r
  27 using System.Globalization;\r
  28 using System.Xml;\r
  29 using System.IO;\r
  30 using System.Collections.Generic;\r
  31 \r
  32 namespace System.Windows.Forms.Layout\r
  33 {\r
  34         public class TableLayoutSettingsTypeConverter : TypeConverter\r
  35         {\r
  36                 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)\r
  37                 {\r
  38                         if (destinationType == typeof (string))\r
  39                                 return true;\r
  40 \r
  41                         return base.CanConvertTo (context, destinationType);\r
  42                 }\r
  43 \r
  44                 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)\r
  45                 {\r
  46                         if (sourceType == typeof(string))\r
  47                                 return true;\r
  48 \r
  49                         return base.CanConvertFrom (context, sourceType);\r
  50                 }\r
  51 \r
  52                 \r
  53 \r
  54                 public override object ConvertTo (ITypeDescriptorContext context,\r
  55                                                   CultureInfo culture,\r
  56                                                   object value,\r
  57                                                   Type destinationType)\r
  58                 {\r
  59                         if (!(value is TableLayoutSettings) || destinationType != typeof (string))\r
  60                                 return base.ConvertTo (context, culture, value, destinationType);\r
  61 \r
  62                         TableLayoutSettings settings = value as TableLayoutSettings;\r
  63                         StringWriter sw = new StringWriter ();\r
  64                         XmlTextWriter xw = new XmlTextWriter (sw);\r
  65                         xw.WriteStartDocument ();\r
  66                         List<ControlInfo> list = settings.GetControls ();\r
  67                         xw.WriteStartElement ("TableLayoutSettings");\r
  68                         xw.WriteStartElement ("Controls");\r
  69                         \r
  70                         foreach (ControlInfo info in list) {\r
  71                                 xw.WriteStartElement ("Control");\r
  72                                 xw.WriteAttributeString ("Name", info.Control.ToString ());\r
  73                                 xw.WriteAttributeString ("Row", info.Row.ToString ());\r
  74                                 xw.WriteAttributeString ("RowSpan", info.RowSpan.ToString ());\r
  75                                 xw.WriteAttributeString ("Column", info.Col.ToString ());\r
  76                                 xw.WriteAttributeString ("ColumnSpan", info.ColSpan.ToString ());\r
  77                                 xw.WriteEndElement ();\r
  78                         }\r
  79                         xw.WriteEndElement ();\r
  80 \r
  81 \r
  82                         List<string> styles = new List<string> ();\r
  83                         \r
  84                         foreach (ColumnStyle style in settings.ColumnStyles) {\r
  85                                 styles.Add (style.SizeType.ToString ());\r
  86                                 styles.Add (style.Width.ToString (CultureInfo.InvariantCulture));\r
  87                         }\r
  88 \r
  89                         \r
  90                         xw.WriteStartElement ("Columns");\r
  91                         xw.WriteAttributeString ("Styles", String.Join (",", styles.ToArray ()));\r
  92                         xw.WriteEndElement ();\r
  93                         \r
  94                         styles.Clear();\r
  95                         foreach (RowStyle style in settings.RowStyles) {\r
  96                                 styles.Add (style.SizeType.ToString ());\r
  97                                 styles.Add (style.Height.ToString (CultureInfo.InvariantCulture));\r
  98                         }\r
  99 \r
 100                         xw.WriteStartElement ("Rows");\r
 101                         xw.WriteAttributeString ("Styles", String.Join (",", styles.ToArray ()));\r
 102                         xw.WriteEndElement ();\r
 103 \r
 104                         xw.WriteEndElement ();\r
 105                         xw.WriteEndDocument ();\r
 106                         xw.Close ();\r
 107 \r
 108                         return sw.ToString ();\r
 109 \r
 110                 }\r
 111 \r
 112                 public override object ConvertFrom (ITypeDescriptorContext context,\r
 113                                                     CultureInfo culture,\r
 114                                                     object value)\r
 115                 {\r
 116                         if (!(value is string))\r
 117                                 return base.ConvertFrom(context, culture, value);\r
 118 \r
 119                         XmlDocument xmldoc = new XmlDocument();\r
 120                         xmldoc.LoadXml (value as string);\r
 121                         TableLayoutSettings settings = new TableLayoutSettings(new TableLayoutPanel());\r
 122                         int count = ParseControl (xmldoc, settings);\r
 123                         ParseColumnStyle (xmldoc, settings);\r
 124                         ParseRowStyle (xmldoc, settings);\r
 125                         settings.RowCount = count;\r
 126                         \r
 127 \r
 128                         return settings;\r
 129                 }\r
 130 \r
 131 \r
 132                 private int ParseControl (XmlDocument xmldoc, TableLayoutSettings settings)\r
 133                 {\r
 134                         int count = 0;\r
 135                         foreach (XmlNode node in xmldoc.GetElementsByTagName ("Control")) {\r
 136                                 if (node.Attributes["Name"] == null || string.IsNullOrEmpty(node.Attributes["Name"].Value))\r
 137                                         continue;\r
 138                                 if (node.Attributes["Row"] != null) {\r
 139                                         settings.SetRow (node.Attributes["Name"].Value, GetValue (node.Attributes["Row"].Value));\r
 140                                         count++;\r
 141                                 }\r
 142                                 if (node.Attributes["RowSpan"] != null) {\r
 143                                         settings.SetRowSpan (node.Attributes["Name"].Value, GetValue (node.Attributes["RowSpan"].Value));\r
 144                                 }\r
 145                                 if (node.Attributes["Column"] != null)\r
 146                                         settings.SetColumn (node.Attributes["Name"].Value, GetValue (node.Attributes["Column"].Value));\r
 147                                 if (node.Attributes["ColumnSpan"] != null)\r
 148                                         settings.SetColumnSpan (node.Attributes["Name"].Value, GetValue (node.Attributes["ColumnSpan"].Value));\r
 149                         }\r
 150                         return count;\r
 151                 }\r
 152 \r
 153                 private void ParseColumnStyle (XmlDocument xmldoc, TableLayoutSettings settings)\r
 154                 {\r
 155                         foreach (XmlNode node in xmldoc.GetElementsByTagName ("Columns")) {\r
 156                                 if (node.Attributes["Styles"] == null)\r
 157                                         continue;\r
 158                                 string styles = node.Attributes["Styles"].Value;\r
 159                                 if (string.IsNullOrEmpty (styles))\r
 160                                         continue;\r
 161                                 string[] list = BuggySplit (styles);\r
 162                                 for (int i = 0; i < list.Length; i+=2) {\r
 163                                         float width = 0f;\r
 164                                         SizeType type = (SizeType) Enum.Parse (typeof (SizeType), list[i]);\r
 165                                         float.TryParse (list[i+1], NumberStyles.Float, CultureInfo.InvariantCulture, out width);\r
 166                                         settings.ColumnStyles.Add (new ColumnStyle (type, width));\r
 167                                 }                               \r
 168                         }\r
 169                 }\r
 170 \r
 171                 private void ParseRowStyle (XmlDocument xmldoc, TableLayoutSettings settings)\r
 172                 {\r
 173                         foreach (XmlNode node in xmldoc.GetElementsByTagName ("Rows")) {\r
 174                                 if (node.Attributes["Styles"] == null)\r
 175                                         continue;\r
 176                                 string styles = node.Attributes["Styles"].Value;\r
 177                                 if (string.IsNullOrEmpty(styles))\r
 178                                         continue;\r
 179                                 string[] list = BuggySplit (styles);\r
 180                                 for (int i = 0; i < list.Length; i += 2) {\r
 181                                         float height = 0f;\r
 182                                         SizeType type = (SizeType) Enum.Parse (typeof (SizeType), list[i]);\r
 183                                         float.TryParse (list[i + 1], NumberStyles.Float, CultureInfo.InvariantCulture, out height);\r
 184                                         settings.RowStyles.Add (new RowStyle (type, height));\r
 185                                 }\r
 186                         }\r
 187                 }\r
 188 \r
 189                 private int GetValue (string attValue)\r
 190                 {\r
 191                         int val = -1;\r
 192                         if (!string.IsNullOrEmpty (attValue)) {\r
 193                                 int.TryParse (attValue, out val);\r
 194                         }\r
 195                         return val;\r
 196                 }\r
 197 \r
 198                 // .Net accidently uses the local culture separator, so\r
 199                 // Percent,50.0,Percent,50.0    can be\r
 200                 // Percent,50,0,Percent,50,0\r
 201                 // Make sure we can handle this\r
 202                 private string[] BuggySplit (string s)\r
 203                 {\r
 204                         List<string> l = new List<string> ();\r
 205                         \r
 206                         string[] split = s.Split (',');\r
 207                         \r
 208                         for (int i = 0; i < split.Length; i++) {\r
 209                                 switch (split[i].ToLowerInvariant ()) {\r
 210                                         case "autosize":\r
 211                                         case "absolute":\r
 212                                         case "percent":\r
 213                                                 l.Add (split[i]);\r
 214                                                 break;\r
 215                                         default:\r
 216                                                 if (i + 1 < split.Length) {\r
 217                                                         float test;\r
 218                                                         \r
 219                                                         if (float.TryParse (split[i + 1], out test)) {\r
 220                                                                 l.Add (string.Format ("{0}.{1}", split[i], split[i + 1]));\r
 221                                                                 i++;    \r
 222                                                         } else\r
 223                                                                 l.Add (split[i]);\r
 224                                                 } else\r
 225                                                         l.Add (split[i]);\r
 226                                                 break;\r
 227                                 }\r
 228                         }\r
 229                         \r
 230                         return l.ToArray ();\r
 231                 }\r
 232         }\r
 233 }\r