mcs/class/Managed.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
   3 // "Software"), to deal in the Software without restriction, including\r
   4 // without limitation the rights to use, copy, modify, merge, publish,\r
   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 #if NET_2_0\r
  24 \r
  25 using System;\r
  26 using System.ComponentModel;\r
  27 using System.Drawing;\r
  28 using System.Globalization;\r
  29 using System.Xml;\r
  30 using System.IO;\r
  31 using System.Collections.Generic;\r
  32 \r
  33 namespace System.Windows.Forms.Layout\r
  34 {\r
  35         public class TableLayoutSettingsTypeConverter : TypeConverter\r
  36         {\r
  37                 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)\r
  38                 {\r
  39                         if (destinationType == typeof (string))\r
  40                                 return true;\r
  41 \r
  42                         return base.CanConvertTo (context, destinationType);\r
  43                 }\r
  44 \r
  45                 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)\r
  46                 {\r
  47                         if (sourceType == typeof(string))\r
  48                                 return true;\r
  49 \r
  50                         return base.CanConvertFrom (context, sourceType);\r
  51                 }\r
  52 \r
  53                 \r
  54 \r
  55                 public override object ConvertTo (ITypeDescriptorContext context,\r
  56                                                   CultureInfo culture,\r
  57                                                   object value,\r
  58                                                   Type destinationType)\r
  59                 {\r
  60                         if (!(value is TableLayoutSettings) || destinationType != typeof (string))\r
  61                                 return base.ConvertTo (context, culture, value, destinationType);\r
  62 \r
  63                         TableLayoutSettings settings = value as TableLayoutSettings;\r
  64                         StringWriter sw = new StringWriter ();\r
  65                         XmlTextWriter xw = new XmlTextWriter (sw);\r
  66                         xw.WriteStartDocument ();\r
  67                         List<ControlInfo> list = settings.GetControls ();\r
  68                         xw.WriteStartElement ("TableLayoutSettings");\r
  69                         xw.WriteStartElement ("Controls");\r
  70                         \r
  71                         foreach (ControlInfo info in list) {\r
  72                                 xw.WriteStartElement ("Control");\r
  73                                 xw.WriteAttributeString ("Name", info.Control.ToString ());\r
  74                                 xw.WriteAttributeString ("Row", info.Row.ToString ());\r
  75                                 xw.WriteAttributeString ("RowSpan", info.RowSpan.ToString ());\r
  76                                 xw.WriteAttributeString ("Column", info.Col.ToString ());\r
  77                                 xw.WriteAttributeString ("ColumnSpan", info.ColSpan.ToString ());\r
  78                                 xw.WriteEndElement ();\r
  79                         }\r
  80                         xw.WriteEndElement ();\r
  81 \r
  82 \r
  83                         List<string> styles = new List<string> ();\r
  84                         \r
  85                         foreach (ColumnStyle style in settings.ColumnStyles) {\r
  86                                 styles.Add (style.SizeType.ToString ());\r
  87                                 styles.Add (style.Width.ToString ());\r
  88                         }\r
  89 \r
  90                         \r
  91                         xw.WriteStartElement ("Columms");\r
  92                         xw.WriteAttributeString ("Styles", String.Join (",", styles.ToArray ()));\r
  93                         xw.WriteEndElement ();\r
  94                         \r
  95                         styles.Clear();\r
  96                         foreach (RowStyle style in settings.RowStyles) {\r
  97                                 styles.Add (style.SizeType.ToString ());\r
  98                                 styles.Add (style.Height.ToString ());\r
  99                         }\r
 100 \r
 101                         xw.WriteStartElement ("Rows");\r
 102                         xw.WriteAttributeString ("Styles", String.Join (",", styles.ToArray ()));\r
 103                         xw.WriteEndElement ();\r
 104 \r
 105                         xw.WriteEndElement ();\r
 106                         xw.WriteEndDocument ();\r
 107                         xw.Close ();\r
 108 \r
 109                         return sw.ToString ();\r
 110 \r
 111                 }\r
 112 \r
 113                 public override object ConvertFrom (ITypeDescriptorContext context,\r
 114                                                     CultureInfo culture,\r
 115                                                     object value)\r
 116                 {\r
 117                         if (!(value is string))\r
 118                                 return base.ConvertFrom(context, culture, value);\r
 119 \r
 120                         XmlDocument xmldoc = new XmlDocument();\r
 121                         xmldoc.LoadXml (value as string);\r
 122                         TableLayoutSettings settings = new TableLayoutSettings(new TableLayoutPanel ());\r
 123                         int count = ParseControl (xmldoc, settings);\r
 124                         ParseColumnStyle (xmldoc, settings);\r
 125                         ParseRowStyle (xmldoc, settings);\r
 126                         settings.RowCount = count;\r
 127                         \r
 128 \r
 129                         return settings;\r
 130                 }\r
 131 \r
 132 \r
 133                 private int ParseControl (XmlDocument xmldoc, TableLayoutSettings settings)\r
 134                 {\r
 135                         int count = 0;\r
 136                         foreach (XmlNode node in xmldoc.GetElementsByTagName ("Control")) {\r
 137                                 if (node.Attributes["Name"] == null || string.IsNullOrEmpty(node.Attributes["Name"].Value))\r
 138                                         continue;\r
 139                                 if (node.Attributes["Row"] != null) {\r
 140                                         settings.SetRow (node.Attributes["Name"].Value, GetValue (node.Attributes["Row"].Value));\r
 141                                         count++;\r
 142                                 }\r
 143                                 if (node.Attributes["RowSpan"] != null) {\r
 144                                         settings.SetRowSpan (node.Attributes["Name"].Value, GetValue (node.Attributes["RowSpan"].Value));\r
 145                                 }\r
 146                                 if (node.Attributes["Column"] != null)\r
 147                                         settings.SetColumn (node.Attributes["Name"].Value, GetValue (node.Attributes["Column"].Value));\r
 148                                 if (node.Attributes["ColumnSpan"] != null)\r
 149                                         settings.SetColumnSpan (node.Attributes["Name"].Value, GetValue (node.Attributes["ColumnSpan"].Value));\r
 150                         }\r
 151                         return count;\r
 152                 }\r
 153 \r
 154                 private void ParseColumnStyle (XmlDocument xmldoc, TableLayoutSettings settings)\r
 155                 {\r
 156                         foreach (XmlNode node in xmldoc.GetElementsByTagName ("Columns")) {\r
 157                                 if (node.Attributes["Styles"] == null)\r
 158                                         continue;\r
 159                                 string styles = node.Attributes["Styles"].Value;\r
 160                                 if (styles == null)\r
 161                                         continue;\r
 162                                 string[] list = styles.Split (',');\r
 163                                 for (int i = 0; i < list.Length; i+=2) {\r
 164                                         float width = 0f;\r
 165                                         SizeType type = (SizeType) Enum.Parse (typeof (SizeType), list[i]);\r
 166                                         float.TryParse (list[i+1], out width);\r
 167                                         settings.ColumnStyles.Add (new ColumnStyle (type, width));\r
 168                                 }                               \r
 169                         }\r
 170                 }\r
 171 \r
 172                 private void ParseRowStyle (XmlDocument xmldoc, TableLayoutSettings settings)\r
 173                 {\r
 174                         foreach (XmlNode node in xmldoc.GetElementsByTagName ("Rows")) {\r
 175                                 if (node.Attributes["Styles"] == null)\r
 176                                         continue;\r
 177                                 string styles = node.Attributes["Styles"].Value;\r
 178                                 if (styles == null)\r
 179                                         continue;\r
 180                                 string[] list = styles.Split (',');\r
 181                                 for (int i = 0; i < list.Length; i += 2) {\r
 182                                         float height = 0f;\r
 183                                         SizeType type = (SizeType) Enum.Parse (typeof (SizeType), list[i]);\r
 184                                         float.TryParse (list[i + 1], out height);\r
 185                                         settings.RowStyles.Add (new RowStyle (type, height));\r
 186                                 }\r
 187                         }\r
 188                 }\r
 189 \r
 190                 private int GetValue (string attValue)\r
 191                 {\r
 192                         int val = -1;\r
 193                         if (!string.IsNullOrEmpty (attValue)) {\r
 194                                 int.TryParse (attValue, out val);\r
 195                         }\r
 196                         return val;\r
 197                 }\r
 198         }\r
 199 }\r
 200 \r
 201 #endif\r