1 files changed, 255 insertions, 0 deletions
diff --git a/platform/windows/gsview/About.xaml.cs b/platform/windows/gsview/About.xaml.cs
new file mode 100644
index 00000000..6bd50cbe
--- /dev/null
+++ b/platform/windows/gsview/About.xaml.cs
@@ -0,0 +1,255 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Reflection;
+using System.Windows;
+using System.Windows.Data;
+using System.Xml;
+using System.ComponentModel;
+
+namespace gsview
+{
+	/// <summary>
+	/// Interaction logic for About.xaml
+	/// </summary>
+	public partial class About : Window
+	{
+		/// <summary>
+		/// Default constructor is protected so callers must use one with a parent.
+		/// </summary>
+		protected About()
+		{
+			InitializeComponent();
+		}
+
+
+		/// <summary>
+		/// Constructor that takes a parent for this About dialog.
+		/// </summary>
+		/// <param name="parent">Parent window for this dialog.</param>
+		public About(Window parent)
+			: this()
+		{
+			this.Owner = parent;
+		}
+
+		/// <summary>
+		/// Handles click navigation on the hyperlink in the About dialog.
+		/// </summary>
+		/// <param name="sender">Object the sent the event.</param>
+		/// <param name="e">Navigation events arguments.</param>
+		private void hyperlink_RequestNavigate(object sender, System.Windows.Navigation.RequestNavigateEventArgs e)
+		{
+			if (e.Uri != null && string.IsNullOrEmpty(e.Uri.OriginalString) == false)
+			{
+				string uri = e.Uri.AbsoluteUri;
+				Process.Start(new ProcessStartInfo(uri));
+				e.Handled = true;
+			}
+		}
+
+		#region AboutData Provider
+		#region Member data
+		private XmlDocument xmlDoc = null;
+		private string variabledescription;
+		private const string propertyNameTitle = "Title";
+		private const string propertyNameDescription = "Description";
+		private const string propertyNameProduct = "Product";
+		private const string propertyNameCopyright = "Copyright";
+		private const string propertyNameCompany = "Company";
+		private const string xPathRoot = "ApplicationInfo/";
+		private const string xPathTitle = xPathRoot + propertyNameTitle;
+		private const string xPathVersion = xPathRoot + "Version";
+		private const string xPathDescription = xPathRoot + propertyNameDescription;
+		private const string xPathProduct = xPathRoot + propertyNameProduct;
+		private const string xPathCopyright = xPathRoot + propertyNameCopyright;
+		private const string xPathCompany = xPathRoot + propertyNameCompany;
+		private const string xPathLink = xPathRoot + "Link";
+		private const string xPathLinkUri = xPathRoot + "Link/@Uri";
+		#endregion
+
+		#region Properties
+		/// <summary>
+		/// Gets the title property, which is display in the About dialogs window title.
+		/// </summary>
+		public string ProductTitle
+		{
+			get
+			{
+				string result = CalculatePropertyValue<AssemblyTitleAttribute>(propertyNameTitle, xPathTitle);
+				if (string.IsNullOrEmpty(result))
+				{
+					// otherwise, just get the name of the assembly itself.
+					result = Path.GetFileNameWithoutExtension(Assembly.GetExecutingAssembly().CodeBase);
+				}
+				return result;
+			}
+		}
+
+		/// <summary>
+		/// Gets the application's version information to show.
+		/// </summary>
+		public string Version
+		{
+			get
+			{
+				string result = string.Empty;
+				// first, try to get the version string from the assembly.
+				Version version = Assembly.GetExecutingAssembly().GetName().Version;
+				if (version != null)
+				{
+					result = version.ToString();
+				}
+				else
+				{
+					// if that fails, try to get the version from a resource in the Application.
+					result = GetLogicalResourceString(xPathVersion);
+				}
+				return result;
+			}
+		}
+
+		/// <summary>
+		/// Gets the description about the application.
+		/// </summary>
+		public string Description
+		{
+			get { return CalculatePropertyValue<AssemblyDescriptionAttribute>(propertyNameDescription, xPathDescription);}
+		}
+
+		public string VariableDescription
+		{
+			get;
+			set;
+		}
+
+		/// <summary>
+		///  Gets the product's full name.
+		/// </summary>
+		public string Product
+		{
+			get { return CalculatePropertyValue<AssemblyProductAttribute>(propertyNameProduct, xPathProduct); }
+		}
+
+		/// <summary>
+		/// Gets the copyright information for the product.
+		/// </summary>
+		public string Copyright
+		{
+			get { return CalculatePropertyValue<AssemblyCopyrightAttribute>(propertyNameCopyright, xPathCopyright); }
+		}
+
+		/// <summary>
+		/// Gets the product's company name.
+		/// </summary>
+		public string Company
+		{
+			get { return CalculatePropertyValue<AssemblyCompanyAttribute>(propertyNameCompany, xPathCompany); }
+		}
+
+		/// <summary>
+		/// Gets the link text to display in the About dialog.
+		/// </summary>
+		public string LinkText
+		{
+			get { return GetLogicalResourceString(xPathLink); }
+		}
+
+		/// <summary>
+		/// Gets the link uri that is the navigation target of the link.
+		/// </summary>
+		public string LinkUri
+		{
+			get { return GetLogicalResourceString(xPathLinkUri); }
+		}
+		#endregion
+
+		#region Resource location methods
+		/// <summary>
+		/// Gets the specified property value either from a specific attribute, or from a resource dictionary.
+		/// </summary>
+		/// <typeparam name="T">Attribute type that we're trying to retrieve.</typeparam>
+		/// <param name="propertyName">Property name to use on the attribute.</param>
+		/// <param name="xpathQuery">XPath to the element in the XML data resource.</param>
+		/// <returns>The resulting string to use for a property.
+		/// Returns null if no data could be retrieved.</returns>
+		private string CalculatePropertyValue<T>(string propertyName, string xpathQuery)
+		{
+			string result = string.Empty;
+			// first, try to get the property value from an attribute.
+			object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(T), false);
+			if (attributes.Length > 0)
+			{
+				T attrib = (T)attributes[0];
+				PropertyInfo property = attrib.GetType().GetProperty(propertyName, BindingFlags.Public | BindingFlags.Instance);
+				if (property != null)
+				{
+					result = property.GetValue(attributes[0], null) as string;
+				}
+			}
+
+			// if the attribute wasn't found or it did not have a value, then look in an xml resource.
+			if (result == string.Empty)
+			{
+				// if that fails, try to get it from a resource.
+				result = GetLogicalResourceString(xpathQuery);
+			}
+			return result;
+		}
+
+		/// <summary>
+		/// Gets the XmlDataProvider's document from the resource dictionary.
+		/// </summary>
+		protected virtual XmlDocument ResourceXmlDocument
+		{
+			get
+			{
+				if (xmlDoc == null)
+				{
+					// if we haven't already found the resource XmlDocument, then try to find it.
+					XmlDataProvider provider = this.TryFindResource("aboutProvider") as XmlDataProvider;
+					if (provider != null)
+					{
+						// save away the XmlDocument, so we don't have to get it multiple times.
+						xmlDoc = provider.Document;
+					}
+				}
+				return xmlDoc;
+			}
+		}
+
+		/// <summary>
+		/// Gets the specified data element from the XmlDataProvider in the resource dictionary.
+		/// </summary>
+		/// <param name="xpathQuery">An XPath query to the XML element to retrieve.</param>
+		/// <returns>The resulting string value for the specified XML element. 
+		/// Returns empty string if resource element couldn't be found.</returns>
+		protected virtual string GetLogicalResourceString(string xpathQuery)
+		{
+			string result = string.Empty;
+			// get the About xml information from the resources.
+			XmlDocument doc = this.ResourceXmlDocument;
+			if (doc != null)
+			{
+				// if we found the XmlDocument, then look for the specified data. 
+				XmlNode node = doc.SelectSingleNode(xpathQuery);
+				if (node != null)
+				{
+					if (node is XmlAttribute)
+					{
+						// only an XmlAttribute has a Value set.
+						result = node.Value;
+					}
+					else
+					{
+						// otherwise, need to just return the inner text.
+						result = node.InnerText;
+					}
+				}
+			}
+			return result;
+		}
+		#endregion
+		#endregion
+	}
+}