more refactoring

static/js/tree_utils.js

@@ -0,0 +1,27 @@
+function getParentKey(node) {
+    return (node.getParent() === null || node.getParent().key === "root_1") ? "root" : node.getParent().key;
+}
+
+function getParentEncryption(node) {
+    return node.getParent() === null ? 0 : node.getParent().data.encryption;
+}
+
+function getNodeByKey(noteId) {
+    return globalTree.fancytree('getNodeByKey', noteId);
+}
+
+function getFullName(noteId) {
+    let note = getNodeByKey(noteId);
+    const path = [];
+
+    while (note) {
+        path.push(note.title);
+
+        note = note.getParent();
+    }
+
+    // remove "root" element
+    path.pop();
+
+    return path.reverse().join(" > ");
+}