[CORE-164] AppContextHelper.SetCustomTileProvider method to DRY the code.

Author: sleschinski

src/MW5.Plugins/Helpers/AppContextHelper.cs

@@ -1,4 +1,5 @@
 using MW5.Plugins.Interfaces;
+using MW5.Plugins.Model;
 
 namespace MW5.Plugins.Helpers
 {
@@ -31,5 +32,12 @@ internal static void ActivatePanel(this IAppContext context, string dockPanelKey
                 panel.Activate();
             }
         }
+
+        public static bool SetCustomTileProvider(this IAppContext context, TmsProvider provider)
+        {
+            var providers = context.Map.Tiles.Providers;
+            providers.Clear(false);
+            return providers.AddCustom(provider.Id, provider.Name, provider.Url, provider.Projection, provider.MinZoom, provider.MaxZoom);
+        }
     }
 }

src/MW5.Services/Concrete/ProjectLoader.cs

@@ -8,6 +8,7 @@
 using MW5.Api.Legend;
 using MW5.Api.Legend.Abstract;
 using MW5.Plugins.Events;
+using MW5.Plugins.Helpers;
 using MW5.Plugins.Interfaces;
 using MW5.Plugins.Services;
 using MW5.Services.Controls;
@@ -94,11 +95,7 @@ private void RestoreTmsProvider(int providerId)
                 var provider = _context.Repository.TmsProviders.FirstOrDefault(p => p.Id == providerId);
                 if (provider != null)
                 {
-                    var providers = _context.Map.Tiles.Providers;
-                    providers.Clear(false);
-
-                    providers.AddCustom(provider.Id, provider.Name, provider.Url, provider.Projection, provider.MinZoom,
-                        provider.MaxZoom);
+                    _context.SetCustomTileProvider(provider);
                 }
                 else
                 {

src/Plugins/MW5.Repository/Views/RepositoryPresenter.cs

@@ -19,6 +19,7 @@
 using MW5.Data.Repository;
 using MW5.Data.Views;
 using MW5.Plugins.Concrete;
+using MW5.Plugins.Helpers;
 using MW5.Plugins.Interfaces;
 using MW5.Plugins.Model;
 using MW5.Plugins.Mvp;
@@ -254,11 +255,7 @@ private void AddTmsProviderToMap(bool update)
             if (provider.IsCustom)
             {
                 // in case of custom provider we need to add definition to the list
-                var providers = _context.Map.Tiles.Providers;
-                providers.Clear(false);
-
-                if (!providers.AddCustom(provider.Id, provider.Name, provider.Url, provider.Projection, provider.MinZoom,
-                        provider.MaxZoom))
+                if (!_context.SetCustomTileProvider(provider))
                 {
                     MessageService.Current.Info("Failed to add custom TMS provider.");
                     return;