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Common/DTS.CommonCore/BusyIndicatorManager/BusyIndicatorManager.cs

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+using Microsoft.Practices.Prism.ViewModel;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace DTS.Common.BusyIndicatorManager
+{
+    public class BusyIndicatorManager : NotificationObject
+    {
+        #region Membervariables
+
+        private Dictionary<int, string> busyParameters;
+
+        #endregion
+
+        #region Constructor
+
+        private BusyIndicatorManager()
+        {
+            _isBusy = false;
+            _message = string.Empty;
+            busyParameters = new Dictionary<int, string>();
+        }
+
+        #endregion
+
+        #region Singleton Implementation
+
+        private static BusyIndicatorManager _instance;
+        private static readonly object SyncRoot = new object();
+
+        public static BusyIndicatorManager Instance
+        {
+            get
+            {
+                lock (SyncRoot)
+                {
+                    return _instance ?? (_instance = new BusyIndicatorManager());
+                }
+            }
+        }
+
+        #endregion
+
+        #region Public Properties
+
+        private bool _isBusy;
+
+        public bool IsBusy
+        {
+            get => _isBusy;
+            private set
+            {
+                _isBusy = value;
+                RaisePropertyChanged("IsBusy");
+            }
+        }
+
+        private string _message;
+
+        public string Message
+        {
+            get => _message;
+            private set
+            {
+                _message = value;
+                RaisePropertyChanged("Message");
+            }
+        }
+
+        #endregion
+
+        #region Public Methods
+
+        public void ShowBusy(int id, string busyMessage)
+        {
+            if (!busyParameters.ContainsKey(id))
+            {
+                busyParameters.Add(id, busyMessage);
+                IsBusy = true;
+                Message = busyMessage;
+            }
+            else
+            {
+                busyParameters[id] = busyMessage;
+                IsBusy = true;
+                Message = busyMessage;
+            }
+        }
+
+        public void CloseBusy(int id)
+        {
+            if (busyParameters.ContainsKey(id))
+                busyParameters.Remove(id);
+
+            if (busyParameters.Count == 0)
+            {
+                IsBusy = false;
+                Message = string.Empty;
+            }
+            else
+            {
+                IsBusy = true;
+                Message = busyParameters.Last().Value;
+            }
+        }
+
+        #endregion
+    }
+}
+
+