Added new serializer classes, supporting async serialization scheme

source/Components/AvalonDock/Layout/Serialization/AsyncXmlLayoutSerializer.cs

@@ -0,0 +1,110 @@
+/************************************************************************
+   AvalonDock
+
+   Copyright (C) 2007-2013 Xceed Software Inc.
+
+   This program is provided to you under the terms of the Microsoft Public
+   License (Ms-PL) as published at https://opensource.org/licenses/MS-PL
+ ************************************************************************/
+
+using System;
+using System.IO;
+using System.Threading.Tasks;
+using System.Xml;
+using System.Xml.Serialization;
+
+namespace AvalonDock.Layout.Serialization
+{
+	/// <summary>Implements a layout serialization/deserialization method of the docking framework.</summary>
+	public class AsyncXmlLayoutSerializer : LayoutSerializerBase
+	{
+		#region Constructors
+
+		/// <summary>
+		/// Class constructor from <see cref="DockingManager"/> instance.
+		/// </summary>
+		/// <param name="manager"></param>
+		public AsyncXmlLayoutSerializer(DockingManager manager)
+			: base(manager)
+		{
+		}
+
+		#endregion Constructors
+
+		#region Public Methods
+
+		/// <summary>Serialize the layout into a <see cref="XmlWriter"/>.</summary>
+		/// <param name="writer"></param>
+		public void Serialize(XmlWriter writer)
+		{
+			var serializer = new XmlSerializer(typeof(LayoutRoot));
+			serializer.Serialize(writer, Manager.Layout);
+		}
+
+		/// <summary>Serialize the layout into a <see cref="TextWriter"/>.</summary>
+		/// <param name="writer"></param>
+		public void Serialize(TextWriter writer)
+		{
+			var serializer = new XmlSerializer(typeof(LayoutRoot));
+			serializer.Serialize(writer, Manager.Layout);
+		}
+
+		/// <summary>Serialize the layout into a <see cref="Stream"/>.</summary>
+		/// <param name="stream"></param>
+		public void Serialize(Stream stream)
+		{
+			var serializer = new XmlSerializer(typeof(LayoutRoot));
+			serializer.Serialize(stream, Manager.Layout);
+		}
+
+		/// <summary>Serialize the layout into a file using a <see cref="StreamWriter"/>.</summary>
+		/// <param name="filepath"></param>
+		public void Serialize(string filepath)
+		{
+			using var stream = new StreamWriter(filepath);
+			Serialize(stream);
+		}
+
+		/// <summary>Deserialize the layout a file from a <see cref="Stream"/>.</summary>
+		/// <param name="stream"></param>
+		public async Task Deserialize(System.IO.Stream stream)
+		{
+			var serializer = new XmlSerializer(typeof(LayoutRoot));
+			var layout = (LayoutRoot)serializer.Deserialize(stream);
+			await FixupLayout(layout);
+			Manager.Layout = layout;
+		}
+
+		/// <summary>Deserialize the layout a file from a <see cref="TextReader"/>.</summary>
+		/// <param name="reader"></param>
+		public async Task Deserialize(TextReader reader)
+		{
+			var serializer = new XmlSerializer(typeof(LayoutRoot));
+			var layout = (LayoutRoot)serializer.Deserialize(reader);
+			await FixupLayout(layout);
+			Manager.Layout = layout;
+		}
+
+		/// <summary>Deserialize the layout a file from a <see cref="XmlReader"/>.</summary>
+		/// <param name="reader"></param>
+		public async Task Deserialize(XmlReader reader)
+		{
+			var serializer = new XmlSerializer(typeof(LayoutRoot));
+			var layout = (LayoutRoot)serializer.Deserialize(reader);
+			await FixupLayout(layout);
+			Manager.Layout = layout;
+		}
+
+		/// <summary>Deserialize the layout from a file using a <see cref="StreamReader"/>.</summary>
+		/// <param name="filepath"></param>
+		public async Task Deserialize(string filepath)
+		{
+			using (var stream = new StreamReader(filepath))
+			{
+				await Deserialize(stream);
+			}
+		}
+
+		#endregion Public Methods
+	}
+}

source/Components/AvalonDock/Layout/Serialization/LayoutRestoreEventArgs.cs

@@ -0,0 +1,76 @@
+/************************************************************************
+   AvalonDock
+
+   Copyright (C) 2007-2013 Xceed Software Inc.
+
+   This program is provided to you under the terms of the Microsoft Public
+   License (Ms-PL) as published at https://opensource.org/licenses/MS-PL
+ ************************************************************************/
+
+using System.ComponentModel;
+
+namespace AvalonDock.Layout.Serialization
+{
+	/// <summary>
+	/// Implements an event that can be used to communicate between deserialization method
+	/// and client application that a new item (LayoutAnchorable or Document) is about to
+	/// be constructed and should be attached to a corresponding viewmodel.
+	///
+	/// The client application can use this event to Cancel reloading the item or
+	/// attach (a viewmodel) content to the view item that is about to be reloaded and presented in the UI.
+	///
+	/// Use the Cancel property to indicate the case in which an item should not be deserialized.
+	/// </summary>
+	public class LayoutRestoreEventArgs
+	{
+		#region constructors
+
+		/// <summary>
+		/// Class constructor from <see cref="LayoutContent"/> and <paramref name="previousContent"/> object.
+		/// </summary>
+		/// <param name="model">The model of the view that has been deserialized.</param>
+		/// <param name="previousContent">The content if it was available in previous layout.</param>
+		public LayoutRestoreEventArgs(LayoutContent model, object previousContent)
+		{
+			Cancel = false;	// reloading an item is not by cancelled by default
+			Handled = false; // an item is not handled by default
+			Model = model;
+			Content = previousContent;
+		}
+
+		#endregion constructors
+
+		#region Properties
+
+		/// <summary>
+		/// Gets or sets a value indicating whether the event should be canceled.
+		/// </summary>
+		public bool Cancel
+		{
+			get; private set;
+		}
+
+		/// <summary>
+		/// Gets or sets a value indicating whether the event should continue processing.
+		/// </summary>
+		public bool Handled
+		{
+			get; private set;
+		}
+
+		/// <summary>
+		/// Gets the model of the view that is about to be deserialized.
+		/// </summary>
+		public LayoutContent Model
+		{
+			get; private set;
+		}
+
+		/// <summary>
+		/// Gets/sets the content for the <see cref="Model"/> that is about to be deserialized.
+		/// </summary>
+		public object Content { get; set; }
+
+		#endregion Properties
+	}
+}