fixes edition cache

BookAStar/BookAStar/ViewModels/BookQueryViewModel.cs

@@ -1,4 +1,5 @@
-using BookAStar.Interfaces;
+using BookAStar.Data;
+using BookAStar.Interfaces;
 using BookAStar.Model;
 using BookAStar.Model.Social;
 using System;
@@ -23,11 +24,34 @@ namespace BookAStar.ViewModels
             Location = data.Location;
             EventDate = data.EventDate;
             Previsionnal = data.Previsionnal;
+            Id = data.Id;
+            this.data = data;
+        }
+        private BookQueryData data;
+        public BookQueryData Data {
+            get
+            {
+                return data;
+            }
         }
         public ClientProviderInfo Client { get; set; }
         public Location Location { get; set; }
         public long Id { get; set; }
         public DateTime EventDate { get; set; }
         public decimal? Previsionnal { get; set; }
+        public EditEstimateViewModel DraftEstimate
+        {
+            get
+            {
+                return DataManager.Current.EstimationCache.LocalGet(this.Id);
+            }
+        }
+        public string EditEstimateButtonText
+        {
+            get
+            {
+                return DraftEstimate != null ? "Editer le devis" : "Faire un devis" ;
+            }
+        }
     }
 }