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 #if NET_2_0
  31 using System;
  32 using System.ComponentModel;
  33 using System.Collections.Specialized;
  34 using System.Xml;
  35 using System.IO;
  36
  37 namespace System.Configuration {
  38
  39         public sealed class AppSettingsSection : ConfigurationSection
  40         {
  41                 private static ConfigurationPropertyCollection _properties;
  42                 private static readonly ConfigurationProperty _propFile;
  43                 private static readonly ConfigurationProperty _propSettings;
  44
  45                 static AppSettingsSection ()
  46                 {
  47                         _propFile = new ConfigurationProperty ("file", typeof(string), "",
  48                                                                new StringConverter(), null, ConfigurationPropertyOptions.None);
  49                         _propSettings = new ConfigurationProperty ("", typeof(KeyValueConfigurationCollection), null,
  50                                                                    null, null, ConfigurationPropertyOptions.IsDefaultCollection);
  51
  52                         _properties     = new ConfigurationPropertyCollection ();
  53
  54                         _properties.Add (_propFile);
  55                         _properties.Add (_propSettings);
  56                 }
  57
  58                 public AppSettingsSection ()
  59                 {
  60                 }
  61
  62                 protected internal override  bool IsModified ()
  63                 {
  64                         return Settings.IsModified ();
  65                 }
  66
  67                 [MonoTODO ("file path?  do we use a System.Configuration api for opening it?  do we keep it open?  do we open it writable?")]
  68                 protected internal override void DeserializeElement (XmlReader reader, bool serializeCollectionKey)
  69                 {
  70                         /* need to do this so we pick up the File attribute */
  71                         base.DeserializeElement (reader, serializeCollectionKey);
  72
  73                         if (File != "") {
  74                                 try {
  75                                         Stream s = System.IO.File.OpenRead (File);
  76                                         XmlReader subreader = new XmlTextReader (s);
  77                                         base.DeserializeElement (subreader, serializeCollectionKey);
  78                                         s.Close ();
  79                                 }
  80                                 catch {
  81                                         // nada, we just ignore a missing/unreadble file
  82                                 }
  83                         }
  84                 }
  85
  86                 protected internal override void Reset (ConfigurationElement parentSection)
  87                 {
  88                         AppSettingsSection psec = parentSection as AppSettingsSection;
  89                         if (psec != null)
  90                                 Settings.Reset (psec.Settings);
  91                 }
  92
  93                 [MonoTODO]
  94                 protected internal override string SerializeSection (
  95                         ConfigurationElement parent, string name, ConfigurationSaveMode mode)
  96                 {
  97                         if (File == "") {
  98                                 return base.SerializeSection (parent, name, mode);
  99                         }
 100                         else {
 101                                 throw new NotImplementedException ();
 102                         }
 103                 }
 104
 105                 [ConfigurationProperty ("file", DefaultValue = "")]
 106                 public string File {
 107                         get { return (string)base [_propFile]; }
 108                         set { base [_propFile] = value; }
 109                 }
 110
 111                 [ConfigurationProperty ("", Options = ConfigurationPropertyOptions.IsDefaultCollection)]
 112                 public KeyValueConfigurationCollection Settings {
 113                         get { return (KeyValueConfigurationCollection) base [_propSettings]; }
 114                 }
 115
 116                 protected internal override ConfigurationPropertyCollection Properties {
 117                         get {
 118                                 return _properties;
 119                         }
 120                 }
 121
 122                 protected internal override object GetRuntimeObject ()
 123                 {
 124                         KeyValueInternalCollection col = new KeyValueInternalCollection ();
 125
 126                         foreach (string key in Settings.AllKeys) {
 127                                 KeyValueConfigurationElement ele = Settings[key];
 128                                 col.Add (ele.Key, ele.Value);
 129                         }
 130
 131                         if (!ConfigurationManager.ConfigurationSystem.SupportsUserConfig)
 132                                 col.SetReadOnly ();
 133
 134                         return col;
 135                 }
 136         }
 137 }
 138 #endif