api call that provides overlay type list

frontend-js/src/main/js/ServerConnector.js

@@ -258,6 +258,15 @@ ServerConnector.getOverlaysUrl = function(projectId, token) {
   });
 };
 
+ServerConnector.getOverlayTypesUrl = function(params) {
+  return this.getApiUrl({type:"overlay",
+    method: "getOverlayTypes",
+    params: {
+      token: params.token,
+    },
+  });
+};
+
 ServerConnector.getCommentsUrl = function(params) {
   var elementId = params.elementId;
   var elementType = params.elementType;
@@ -1069,7 +1078,25 @@ ServerConnector.getSuggestedQueryList = function(projectId) {
     }).then(function(token) {
       return self.sendPostRequest(self.getSuggestedQueryListUrl(),{projectId:projectId,token:token});
     }).then(function(content) {
-        resolve(JSON.parse(content));
+      resolve(JSON.parse(content));
+    }).catch(function(exception){
+      reject(exception);
+    });
+  });
+};
+
+ServerConnector.getOverlayTypes = function() {
+  var self = this;
+  return new Promise(function(resolve, reject) {
+    return self.getToken().then(function(token) {
+      return self.readFile(self.getOverlayTypesUrl({token:token}));
+    }).then(function(content) {
+      var obj = JSON.parse(content);
+      var result = [];
+      for (var i=0;i<obj.length;i++) {
+        result.push(obj[i].name);
+      }
+      resolve(result);
     }).catch(function(exception){
       reject(exception);
     });

frontend-js/src/main/js/gui/OverlayPanel.js

@@ -205,7 +205,12 @@ OverlayPanel.prototype.refresh = function() {
   var self = this;
   var user = null;
 
-  return ServerConnector.getLoggedUser().then(function(loggedUser) {
+  var overlayTypes = [];
+  
+  return ServerConnector.getOverlayTypes().then(function(types) {
+    overlayTypes = types;
+    return ServerConnector.getLoggedUser();
+  }).then(function(loggedUser) {
     user = loggedUser;
     return ServerConnector.getOverlays();
   }).then(function(customOverlays) {
@@ -258,6 +263,7 @@ OverlayPanel.prototype.refresh = function() {
         body.appendChild(self.createOverlayRow(overlay, selectedOverlay[overlay.getId()]));
       }
     }
+
     return null;
   });
 };

frontend-js/testFiles/apiCalls/overlay/getOverlayTypes/token=MOCK_TOKEN_ID&

+[
+  {
+    "name": "GENERIC"
+  },
+  {
+    "name": "GENETIC_VARIANT"
+  }
+]
\ No newline at end of file

rest-api/src/main/java/lcsb/mapviewer/api/overlay/OverlayController.java

@@ -33,6 +33,12 @@ public class OverlayController extends BaseController {
 		return overlayController.getOverlayList(token, projectId);
 	}
 
+	@RequestMapping(value = "/getOverlayTypes", method = { RequestMethod.GET }, produces = { MediaType.APPLICATION_JSON_VALUE })
+	public List<Map<String,Object>> getOverlayTypes(@RequestParam(value = "token") String token)
+			throws SecurityException, QueryException {
+		return overlayController.getOverlayTypes(token);
+	}
+
 	@RequestMapping(value = "/getOverlayById", method = { RequestMethod.GET }, produces = { MediaType.APPLICATION_JSON_VALUE })
 	public LayoutView getOverlayById(@RequestParam(value = "token") String token, @RequestParam(value = "projectId") String projectId,
 			@RequestParam(value = "overlayId") String overlayId) throws SecurityException, QueryException {

rest-api/src/main/java/lcsb/mapviewer/api/overlay/OverlayRestImpl.java

@@ -261,4 +261,14 @@ public class OverlayRestImpl extends BaseRestImpl {
 
 	}
 
+	public List<Map<String, Object>> getOverlayTypes(String token) {
+		List<Map<String, Object>> result = new ArrayList<>();
+		for (ColorSchemaType type : ColorSchemaType.values()) {
+			Map<String, Object> map = new HashMap<>();
+			map.put("name", type.name());
+			result.add(map);
+		}
+		return result;
+	}
+
 }