mcs/class/System.Configuration/System.Configuration/AppSettingsSection.cs

   1 //
   2 // System.Configuration.AppSettingsSection.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak (duncan@ximian.com)
   6 //      Chris Toshok (toshok@ximian.com)
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining
   9 // a copy of this software and associated documentation files (the
  10 // "Software"), to deal in the Software without restriction, including
  11 // without limitation the rights to use, copy, modify, merge, publish,
  12 // distribute, sublicense, and/or sell copies of the Software, and to
  13 // permit persons to whom the Software is furnished to do so, subject to
  14 // the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be
  17 // included in all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  22 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  23 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  24 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  25 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26 //
  27 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  28 //
  29
  30 using System;
  31 using System.ComponentModel;
  32 using System.Collections.Specialized;
  33 using System.Xml;
  34 using System.IO;
  35
  36 namespace System.Configuration {
  37
  38         public sealed class AppSettingsSection : ConfigurationSection
  39         {
  40                 private static ConfigurationPropertyCollection _properties;
  41                 private static readonly ConfigurationProperty _propFile;
  42                 private static readonly ConfigurationProperty _propSettings;
  43
  44                 static AppSettingsSection ()
  45                 {
  46                         _propFile = new ConfigurationProperty ("file", typeof(string), "",
  47                                                                new StringConverter(), null, ConfigurationPropertyOptions.None);
  48                         _propSettings = new ConfigurationProperty ("", typeof(KeyValueConfigurationCollection), null,
  49                                                                    null, null, ConfigurationPropertyOptions.IsDefaultCollection);
  50
  51                         _properties     = new ConfigurationPropertyCollection ();
  52
  53                         _properties.Add (_propFile);
  54                         _properties.Add (_propSettings);
  55                 }
  56
  57                 public AppSettingsSection ()
  58                 {
  59                 }
  60
  61                 protected internal override  bool IsModified ()
  62                 {
  63                         return Settings.IsModified ();
  64                 }
  65
  66                 [MonoInternalNote ("file path?  do we use a System.Configuration api for opening it?  do we keep it open?  do we open it writable?")]
  67                 protected internal override void DeserializeElement (XmlReader reader, bool serializeCollectionKey)
  68                 {
  69                         /* need to do this so we pick up the File attribute */
  70                         base.DeserializeElement (reader, serializeCollectionKey);
  71
  72                         if (File != "") {
  73                                 try {
  74                                         Stream s = System.IO.File.OpenRead (File);
  75                                         XmlReader subreader = new ConfigXmlTextReader (s, File);
  76                                         base.DeserializeElement (subreader, serializeCollectionKey);
  77                                         s.Close ();
  78                                 }
  79                                 catch {
  80                                         // nada, we just ignore a missing/unreadble file
  81                                 }
  82                         }
  83                 }
  84
  85                 protected internal override void Reset (ConfigurationElement parentSection)
  86                 {
  87                         AppSettingsSection psec = parentSection as AppSettingsSection;
  88                         if (psec != null)
  89                                 Settings.Reset (psec.Settings);
  90                 }
  91
  92                 [MonoTODO]
  93                 protected internal override string SerializeSection (
  94                         ConfigurationElement parent, string name, ConfigurationSaveMode mode)
  95                 {
  96                         if (File == "") {
  97                                 return base.SerializeSection (parent, name, mode);
  98                         }
  99                         else {
 100                                 throw new NotImplementedException ();
 101                         }
 102                 }
 103
 104                 [ConfigurationProperty ("file", DefaultValue = "")]
 105                 public string File {
 106                         get { return (string)base [_propFile]; }
 107                         set { base [_propFile] = value; }
 108                 }
 109
 110                 [ConfigurationProperty ("", Options = ConfigurationPropertyOptions.IsDefaultCollection)]
 111                 public KeyValueConfigurationCollection Settings {
 112                         get { return (KeyValueConfigurationCollection) base [_propSettings]; }
 113                 }
 114
 115                 protected internal override ConfigurationPropertyCollection Properties {
 116                         get {
 117                                 return _properties;
 118                         }
 119                 }
 120
 121                 protected internal override object GetRuntimeObject ()
 122                 {
 123                         KeyValueInternalCollection col = new KeyValueInternalCollection ();
 124
 125                         foreach (string key in Settings.AllKeys) {
 126                                 KeyValueConfigurationElement ele = Settings[key];
 127                                 col.Add (ele.Key, ele.Value);
 128                         }
 129
 130                         if (!ConfigurationManager.ConfigurationSystem.SupportsUserConfig)
 131                                 col.SetReadOnly ();
 132
 133                         return col;
 134                 }
 135         }
 136 }