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using System;
using System.Collections.Generic;
using System.Xml.Linq;
namespace DotNetOpenAuth.Web.Clients
{
internal static class DictionaryExtensions
{
/// <summary>
/// Adds a key/value pair to the specified dictionary if the value is not null or empty.
/// </summary>
/// <param name="dictionary">The dictionary.</param>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
public static void AddItemIfNotEmpty(this IDictionary<string, string> dictionary, string key, string value)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
if (!String.IsNullOrEmpty(value))
{
dictionary[key] = value;
}
}
/// <summary>
/// Adds the value from an XDocument with the specified element name if it's not empty.
/// </summary>
/// <param name="dictionary">The dictionary.</param>
/// <param name="document">The document.</param>
/// <param name="elementName">Name of the element.</param>
public static void AddDataIfNotEmpty(
this Dictionary<string, string> dictionary,
XDocument document,
string elementName)
{
var element = document.Root.Element(elementName);
if (element != null)
{
dictionary.AddItemIfNotEmpty(elementName, element.Value);
}
}
}
}
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