/// <summary>
/// This private constructor doesn't allow to instanciate this method.
/// </summary>
private Config()
{
#region Load or create default config storage.
ConfigObjectV1 co = null;
String configFile = Path.Combine(_configFolderPath, "config.xml");
if (!File.Exists(configFile))
{
co = new ConfigObjectV1();
StoreChanges();
}
if (File.Exists(configFile))
{
using (var stream = new FileStream(configFile, FileMode.Open, FileAccess.Read))
using (var reader = new System.Xml.XmlTextReader(stream))
{
// Find the version of config file.
String configVersion = null;
while (reader.Read())
{
if (reader.Name.Equals("Version", StringComparison.Ordinal))
{
reader.Read(); // Force reader to go to node's value.
configVersion = reader.Value;
break;
}
}
if (configVersion != null)
{
Int32 version;
if (Int32.TryParse(configVersion, out version))
{
if (version > 1)
{
MessageBox.Show(
LocalizedData.ConfigIsNewerThanSupported,
LocalizedData.PluginName,
MessageBoxButton.OK,
MessageBoxImage.Exclamation);
}
// Correct version, read config's content.
else if (version == 1)
{
stream.Position = 0;
var serializer = new XmlSerializer(typeof(ConfigObjectV1));
try
{
co = (ConfigObjectV1)serializer.Deserialize(stream);
}
catch (InvalidOperationException ex)
{
MessageBox.Show(
LocalizedData.FailedToDeserializePlugin + ex.Message,
LocalizedData.PluginName,
MessageBoxButton.OK,
MessageBoxImage.Exclamation);
}
}
else // This is really odd situation, negative or zero version...
{
throw new ApplicationException("Unknown version of configuration file: " + version);
}
}
}
}
}
co = co ?? new ConfigObjectV1();
#endregion
#region Transfer data from the storage into this object.
IsEnabled = co.IsEnabled;
Height = co.Height;
Width = co.Width;
Left = co.Left;
Top = co.Top;
ShowInTaskbar = co.ShowInTaskbar;
EnableHotKeys = co.EnableHotKeys;
foreach (var rule in _rules)
{
rule.Enabled = co.Rules.Contains(rule.Rule);
}
#endregion
}
/// <summary>
/// Saves changes made to this object to configuration file
/// and raises the <see cref="Saved"/> event;
/// </summary>
public void StoreChanges()
{
#region Create a storage object with a copy of this object's data.
var configObject = new ConfigObjectV1
{
IsEnabled = IsEnabled,
Height = Height,
Width = Width,
Left = Left,
Top = Top,
ShowInTaskbar = ShowInTaskbar,
EnableHotKeys = EnableHotKeys,
Rules = _rules
.Where(r => r.Enabled)
.Select(r => r.Rule)
.ToArray()
};
#endregion
#region Serialize storage object to an XML file.
if (!Directory.Exists(_configFolderPath))
{
try
{
Directory.CreateDirectory(_configFolderPath);
}
catch (Exception ex)
{
MessageBox.Show(
LocalizedData.FailedToCreateConfigFolder + ex.Message,
LocalizedData.PluginName,
MessageBoxButton.OK,
MessageBoxImage.Error);
throw;
}
}
String configFile = Path.Combine(_configFolderPath, "config.xml");
var serializer = new XmlSerializer(typeof(ConfigObjectV1));
using (var ms = new MemoryStream())
{
serializer.Serialize(ms, configObject);
ms.Flush();
byte[] buf = ms.GetBuffer();
if (ms.Length > 0)
{
using (var fs = new FileStream(configFile, FileMode.Create))
{
fs.Write(buf, 0, (int) ms.Length);
}
}
}
#endregion
OnSaved(this, EventArgs.Empty);
}
