LT-73 Move queryStudies used to get study metadata from exportStudies to lib as a global function

Packages/viewerbase/lib/queryStudies.js

@@ -0,0 +1,48 @@
+/**
+ * Queries requested studies to get their metadata from PACS
+ * @param studiesToQuery Studies to query
+ * @param doneCallback Callback to call when the query is done
+ */
+queryStudies = function(studiesToQuery, doneCallback) {
+    if (studiesToQuery.length < 1) {
+        return;
+    }
+
+    var studiesQueried = [];
+    var numberOfStudiesToQuery = studiesToQuery.length;
+
+    progressDialog.show("Querying Studies...", numberOfStudiesToQuery);
+
+    studiesToQuery.forEach(function(studyToQuery) {
+        getStudyMetadata(studyToQuery.studyInstanceUid, function(study) {
+            studiesQueried.push(study);
+
+            var numberOfStudiesQueried = studiesQueried.length;
+
+            progressDialog.update(numberOfStudiesQueried);
+
+            if (numberOfStudiesQueried === numberOfStudiesToQuery) {
+                doneCallback(studiesQueried);
+            }
+        });
+    });
+};
+
+/**
+ * Returns the total number of dicom files in a study
+ * @param study Queried study (includes metadata)
+ * @returns {number}
+ */
+getNumberOfFilesInStudy = function(study) {
+    var numberOFFilesToExport = 0;
+
+    study.seriesList.forEach(function(series) {
+        series.instances.forEach(function(instance) {
+            if (instance.wadouri) {
+                numberOFFilesToExport++;
+            }
+        });
+    });
+
+    return numberOFFilesToExport;
+};