Initial commit — AllMusicGuide scraper and music metadata tagger

UI/IProgressCallback.cs

@@ -0,0 +1,35 @@
+using System;
+
+namespace MusicMetaTagger.UI
+{
+	/// <summary>
+	///   This defines an interface which can be implemented by UI elements which indicate the progress of a long operation. (See ProgressWindow for a typical implementation)
+	/// </summary>
+	public interface IProgressCallback
+	{
+		/// <summary>
+		///   If this property is true, then you should abort work
+		/// </summary>
+		bool IsAborting { get; }
+
+		/// <summary>
+		///   Call this method from the worker thread to initialize the progress callback, without setting the range
+		/// </summary>
+		void Begin();
+
+		/// <summary>
+		///   Call this method from the worker thread to reset the range in the progress callback
+		/// </summary>
+		void SetRange(int minimum, int maximum);
+
+		/// <summary>
+		///   Call this method from the worker thread to update the progress text.
+		/// </summary>
+		void SetText(String text);
+
+		/// <summary>
+		///   Call this method from the worker thread to step the progress meter to a particular value.
+		/// </summary>
+		void Increment(int val);
+	}
+}