fetch overlay information for all models in parallel

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

@@ -1922,25 +1922,45 @@ ServerConnector.getOverlayElements = function (overlayId, projectId) {
   if (overlayId === undefined) {
     throw new Error("Overlay id must be defined");
   }
-  var queryParams = {
-    overlayId: overlayId,
-    modelId: "*"
-  };
   var filterParams = {};
+  var modelIds = ["*"];
   return self.getProjectId(projectId).then(function (result) {
-    queryParams.projectId = result;
-    return self.sendGetRequest(self.getOverlayElementsUrl(queryParams, filterParams));
-  }).then(function (content) {
-    var arr = JSON.parse(content);
+    var queryParams = {
+      overlayId: overlayId,
+      projectId: result,
+      modelId: "*"
+    };
+    if (self.getSessionData().getProject()!==null) {
+      modelIds = [];
+      var project = self.getSessionData().getProject();
+      for (var i=0;i< project.getModels().length;i++) {
+        modelIds.push(project.getModels()[i].getId());
+      }
+    }
+    console.log(modelIds);
+    var promises = [];
+    for (var j=0;j<modelIds.length;j++) {
+      promises.push(self.sendGetRequest(self.getOverlayElementsUrl({
+        overlayId: overlayId,
+        projectId: result,
+        modelId: modelIds[j]
+      }, filterParams)));
+    }
+    return Promise.all(promises);
+  }).then(function (contentList) {
     var result = [];
-    for (var i = 0; i < arr.length; i++) {
-      var element = arr[i];
-      if (element.type === "REACTION") {
-        result.push(new LayoutReaction(element.overlayContent));
-      } else if (element.type === "ALIAS") {
-        result.push(new LayoutAlias(element.overlayContent));
-      } else {
-        throw new Error("Unknown element type: " + element.type);
+    for (var j=0;j<contentList.length;j++) {
+      var content = contentList[j];
+      var arr = JSON.parse(content);
+      for (var i = 0; i < arr.length; i++) {
+        var element = arr[i];
+        if (element.type === "REACTION") {
+          result.push(new LayoutReaction(element.overlayContent));
+        } else if (element.type === "ALIAS") {
+          result.push(new LayoutAlias(element.overlayContent));
+        } else {
+          throw new Error("Unknown element type: " + element.type);
+        }
       }
     }
     return result;