/// <summary>
/// Returns a collection of properties for the type of array specified by the value parameter, using the specified context and attributes.
/// </summary>
/// <param name="context">An <see cref="ITypeDescriptorContext"/> that provides a format context.</param>
/// <param name="value">An <see cref="Object"/> that specifies the type of array for which to get properties.</param>
/// <param name="attributes">An array of type <see cref="Attribute"/> that is used as a filter.</param>
/// <returns>A <see cref="PropertyDescriptorCollection"/> with the properties that are exposed for this data type, or <see langword="null"/> if there are no properties.</returns>
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes)
{
MergedConfigurationNode mergedConfigurationNode = value as MergedConfigurationNode;
if (mergedConfigurationNode != null)
{
return(TypeDescriptor.GetProperties(mergedConfigurationNode, attributes));
}
return(base.GetProperties(context, value, attributes));
}
/// <summary>
/// Converts an arbitrary instance of <see cref="System.Object"/> to an instance of <see cref="MergedConfigurationNode"/>.
/// </summary>
/// <param name="context">An <see cref="ITypeDescriptorContext"/> that provides a format context.</param>
/// <param name="culture">A <see cref="System.Globalization.CultureInfo"/>. If <see langword="null"/> is passed, the current culture is assumed.</param>
/// <param name="value">The instance of <see cref="System.Object"/> that should be used for conversion.</param>
/// <returns>If conversion succeeds, an instance of <see cref="MergedConfigurationNode"/>, otherwise <see langword="null"/>.</returns>
public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
if (value != null)
{
string overrideString = value.ToString();
MergedConfigurationNode oldMergedConfigurationNode = context.PropertyDescriptor.GetValue(context.Instance) as MergedConfigurationNode;
ConfigurationNodeMergeData oldMergeData = oldMergedConfigurationNode.MergeData;
bool overrideProperties = (overrideString == Resources.OverrideProperties);
ConfigurationNodeMergeData newMergeData = new ConfigurationNodeMergeData(overrideProperties, oldMergeData);
return(new MergedConfigurationNode(newMergeData, oldMergedConfigurationNode));
}
return(base.ConvertFrom(context, culture, value));
}
/// <summary>
/// Converts an instance of <see cref="MergedConfigurationNode"/> to the type specified in <paramref name="destinationType"/>.
/// </summary>
/// <param name="context">An <see cref="ITypeDescriptorContext"/> that provides a format context.</param>
/// <param name="culture">A <see cref="System.Globalization.CultureInfo"/>. If <see langword="null"/> is passed, the current culture is assumed.</param>
/// <param name="value">The instance of <see cref="MergedConfigurationNode"/> that should be converted.</param>
/// <param name="destinationType">The type to which the <paramref name="value"/> should be converted.</param>
/// <returns>An instance of <paramref name="destinationType"/> if converstion succeeds, otherwise <see langword="null"/>.</returns>
public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof(string))
{
if (value is string)
{
return(value);
}
MergedConfigurationNode mergedConfigurationNode = value as MergedConfigurationNode;
if (mergedConfigurationNode != null)
{
if (mergedConfigurationNode.MergeData.OverrideProperties)
{
return(Resources.OverrideProperties);
}
else
{
return(Resources.DontOverrideProperties);
}
}
}
return(base.ConvertTo(context, culture, value, destinationType));
}
/// <summary>
/// Updates the <see cref="MergedConfigurationNode"/> for a specific <see cref="ConfigurationNode"/> instance.
/// </summary>
/// <param name="node">The <see cref="ConfigurationNode"/> whose properties in this environment should be updated.</param>
/// <param name="value">The <see cref="MergedConfigurationNode"/> instance that contains all the differences for the <paramref name="node"/>.</param>
public void SetOverrides(ConfigurationNode node, MergedConfigurationNode value)
{
environmentData.UpdateMergeData(node, value.MergeData);
}
internal MergedConfigurationNode(ConfigurationNodeMergeData mergedConfigurationNodeData, MergedConfigurationNode mergedConfigurationNode)
: this(mergedConfigurationNode.masterConfigurationNode, mergedConfigurationNodeData)
{
}
/// <summary>
/// Updates the <see cref="MergedConfigurationNode"/> for a specific <see cref="ConfigurationNode"/> instance.
/// </summary>
/// <param name="node">The <see cref="ConfigurationNode"/> whose properties in this environment should be updated.</param>
/// <param name="value">The <see cref="MergedConfigurationNode"/> instance that contains all the differences for the <paramref name="node"/>.</param>
public void SetOverrides(ConfigurationNode node, MergedConfigurationNode value)
{
environmentData.UpdateMergeData(node, value.MergeData);
}
internal MergedConfigurationNode(ConfigurationNodeMergeData mergedConfigurationNodeData, MergedConfigurationNode mergedConfigurationNode)
: this(mergedConfigurationNode.masterConfigurationNode, mergedConfigurationNodeData)
{
}
