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ScheduledItems/BlockWrapper.cs

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+/***************************************************************************
+ * Copyright Andy Brummer 2004-2005
+ * 
+ * This code is provided "as is", with absolutely no warranty expressed
+ * or implied. Any use is at your own risk.
+ *
+ * This code may be used in compiled form in any way you desire. This
+ * file may be redistributed unmodified by any means provided it is
+ * not sold for profit without the authors written consent, and
+ * providing that this notice and the authors name is included. If
+ * the source code in  this file is used in any commercial application
+ * then a simple email would be nice.
+ * 
+ **************************************************************************/
+
+using System;
+using System.Collections;
+
+namespace UtilidadesCSharp.Schedule
+{
+	/// <summary>
+	/// This class will be used to implement a filter that enables a window of activity.  For cases where you want to 
+	/// run every 15 minutes between 6:00 AM and 5:00 PM.  Or just on weekdays or weekends.
+	/// </summary>
+	public class BlockWrapper : IScheduledItem
+	{
+		public BlockWrapper(IScheduledItem item, string StrBase, string BeginOffset, string EndOffset)
+		{
+			_Item = item;
+			_Begin = new ScheduledTime(StrBase, BeginOffset);
+			_End = new ScheduledTime(StrBase, EndOffset);
+		}
+		public void AddEventsInInterval(DateTime Begin, DateTime End, ArrayList List)
+		{
+			DateTime Next = NextRunTime(Begin, true);
+			while (Next < End)
+			{
+				List.Add(Next);
+				Next = NextRunTime(Next, false);
+			}
+		}
+
+		public DateTime NextRunTime(DateTime time, bool AllowExact)
+		{
+			return NextRunTime(time, 100, AllowExact);
+		}
+
+		DateTime NextRunTime(DateTime time, int count, bool AllowExact)
+		{
+			if (count == 0)
+				throw new Exception("Invalid block wrapper combination.");
+
+			DateTime
+				temp = _Item.NextRunTime(time, AllowExact),
+				begin = _Begin.NextRunTime(time, true),
+				end = _End.NextRunTime(time, true);
+			System.Diagnostics.Debug.WriteLine(string.Format("{0} {1} {2} {3}", time, begin, end, temp));
+			bool A = temp > end, B = temp < begin, C = end < begin;
+			System.Diagnostics.Debug.WriteLine(string.Format("{0} {1} {2}", A, B, C));
+			if (C)
+			{
+				if (A && B)
+					return NextRunTime(begin, --count, false);
+				else
+					return temp;
+			} 
+			else
+			{
+				if (!A && !B)
+					return temp;
+				if (!A)
+					return NextRunTime(begin, --count, false);
+				else
+					return NextRunTime(end, --count, false);
+			}
+		}
+		private IScheduledItem _Item;
+		private ScheduledTime _Begin, _End;
+	}
+}