reorganization of source code

public/javascripts/tree_utils.js

@@ -0,0 +1,51 @@
+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 getNoteTitle(noteId) {
+    const note = getNodeByKey(noteId);
+    if (!note) {
+        return;
+    }
+
+    let noteTitle = note.title;
+
+    if (noteTitle.endsWith(" (clone)")) {
+        noteTitle = noteTitle.substr(0, noteTitle.length - 8);
+    }
+
+    return noteTitle;
+}
+
+function getFullName(noteId) {
+    let note = getNodeByKey(noteId);
+
+    if (note === null) {
+        return "[unknown]";
+    }
+
+    if (note.data.is_clone || (note.data.encryption > 0 && !isEncryptionAvailable())) {
+        return null;
+    }
+
+    const path = [];
+
+    while (note) {
+        path.push(note.title);
+
+        note = note.getParent();
+    }
+
+    // remove "root" element
+    path.pop();
+
+    return path.reverse().join(" > ");
+}