Replacing switchToTab with routes

Packages/ohif-study-list/client/lib/retrieveStudiesMetadata.js

@@ -0,0 +1,42 @@
+import { OHIF } from 'meteor/ohif:core';
+
+/**
+ * Retrieves metaData for multiple studies at once.
+ *
+ * This function calls retrieveStudyMetadata several times, asynchronously,
+ * and waits for all of the results to be returned.
+ *
+ * @param studyInstanceUids The UIDs of the Studies to be retrieved
+ * @return Promise
+ */
+OHIF.studylist.retrieveStudiesMetadata = (studyInstanceUids, doneCallback, failCallback) => {
+    // Check to make sure studyInstanceUids were actually input
+    if (!studyInstanceUids || !studyInstanceUids.length) {
+        if (failCallback && typeof failCallback === 'function') {
+            failCallback('No studyInstanceUids were input');
+        }
+
+        return;
+    }
+
+    // Create an empty array to store the Promises for each metaData retrieval call
+    const promises = [];
+
+    // Loop through the array of studyInstanceUids
+    studyInstanceUids.forEach(function(studyInstanceUid) {
+        // Send the call, and attach doneCallbacks and failCallbacks
+        // which can resolve or reject the related promise based on its outcome
+        const promise = OHIF.studylist.retrieveStudyMetadata(studyInstanceUid);
+
+        // Add the current promise to the array of promises
+        promises.push(promise);
+    });
+
+    // When all of the promises are complete, this callback runs
+    const promise = Promise.all(promises);
+
+    // Warn the error on console if some retrieval failed
+    promise.catch(error => OHIF.log.warn(error));
+
+    return promise;
+};