Resolve "Display datasets with cone search enabled"

Closes #125 (closed)

src/app/metamodel/selectors/dataset.selector.ts

@@ -2,6 +2,7 @@ import { createSelector } from '@ngrx/store';
 
 import * as metamodel from '../reducers';
 import * as dataset from '../reducers/dataset.reducer';
+import { Dataset } from '../model';
 
 export const getDatasetState = createSelector(
     metamodel.getMetamodelState,
@@ -28,6 +29,13 @@ export const getDatasetList = createSelector(
     dataset.getDatasetList
 );
 
+export const getDatasetWithConeSearchList = createSelector(
+    getDatasetList,
+    (datasetList: Dataset[]) => {
+        return  datasetList.filter(d => d.config.cone_search && d.config.cone_search.enabled === true);
+    }
+);
+
 export const getDatasetFamilyList = createSelector(
     getDatasetState,
     dataset.getDatasetFamilyList