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Common/DTS.Common.Serialization/Control/ReviewableAttribute.cs

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+/*
+ * DTS.Slice.Control.ReviewableAttribute.cs
+ * 
+ * Copyright © 2009
+ * Diversified Technical Systems, Inc.
+ * All Rights Reserved
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using DTS.Utilities;
+using DTS.Utilities.DotNetProgrammingConstructs;
+
+namespace DTS.Slice.Control
+{
+    /// <summary>
+    /// Representation of a "reviewable" attribute.
+    /// </summary>
+    abstract public class ReviewableAttribute : Exceptional
+    {   ///
+        /// <summary>
+        /// Initialize an instance of the ReviewableAttribute class.
+        /// </summary>
+        /// 
+        /// <param name="name">
+        /// The <see cref="string"/> name of the attribute represented by this object.
+        /// </param>
+        /// 
+        /// <param name="value">
+        /// The value of the attribute represented by this object.
+        /// </param>
+        /// 
+        public ReviewableAttribute(string name, DetermineValueString calculateValue)
+        {
+            try
+            {
+                this.Name = name;
+                this.CalculateValue = calculateValue;
+            }
+
+            catch (System.Exception ex)
+            {
+                throw new ReviewableAttribute.Exception("encountered problem constructing " + this.GetType().FullName, ex);
+            }
+        }
+
+        /// <summary>
+        /// The <see cref="string"/> name associated with this review tab-displayable attribute.
+        /// </summary>
+        public string Name
+        {
+            get { return _Name.Value; }
+            private set { _Name.Value = value; }
+        }
+        private Property<string> _Name
+            = new Property<string>(
+                typeof(ReviewableAttribute).Namespace + ".ReviewableAttribute.Name",
+                null,
+                false
+            );
+
+        /// <summary>
+        /// Get the value <see cref="string"/> for this attribute.
+        /// </summary>
+        public string Value
+        {
+            get
+            {
+                try
+                {
+                    return CalculateValue();
+                }
+
+                catch (System.Exception ex)
+                {
+                    Utilities.Logging.APILogger.Log("encountered problem getting ReviewableAttribute value", ex);
+                    return "N/A";
+                    //throw new ReviewableAttribute.Exception( "encountered problem getting ReviewableAttribute value", ex );
+                }
+            }
+        }
+
+        // Need to attach the list of attribute "accessors" to the channel in a similar way
+        // we do with filters.  Have an "available" list.  And then an "active" list.
+        public delegate string DetermineValueString();
+
+        /// <summary>
+        /// Determine the value associated with this review tab-displayable attribute.
+        /// </summary>
+        private DetermineValueString CalculateValue
+        {
+            get
+            {
+                try
+                {
+                    if (!_CalculateValueIsInitialized)
+                        throw new ApplicationException("method property \"CalculateValue\" has not been initialized");
+                    else return _CalculateValue;
+                }
+
+                catch (System.Exception ex)
+                {
+                    throw new ReviewableAttribute.Exception("encountered problem getting property value", ex);
+                }
+            }
+
+            set
+            {
+                _CalculateValue = value;
+                _CalculateValueIsInitialized = true;
+            }
+        }
+        private DetermineValueString _CalculateValue;
+        private bool _CalculateValueIsInitialized = false;
+    }
+}