fix setup of new document, closes #966

src/public/app/entities/branch.js

@@ -0,0 +1,46 @@
+/** Represents mapping between note and parent note */
+class Branch {
+    constructor(treeCache, row) {
+        this.treeCache = treeCache;
+
+        this.update(row);
+    }
+
+    update(row) {
+        /** @param {string} primary key */
+        this.branchId = row.branchId;
+        /** @param {string} */
+        this.noteId = row.noteId;
+        /** @param {string} */
+        this.parentNoteId = row.parentNoteId;
+        /** @param {int} */
+        this.notePosition = row.notePosition;
+        /** @param {string} */
+        this.prefix = row.prefix;
+        /** @param {boolean} */
+        this.isExpanded = !!row.isExpanded;
+        /** @param {boolean} */
+        this.isDeleted = !!row.isDeleted;
+    }
+
+    /** @returns {NoteShort} */
+    async getNote() {
+        return this.treeCache.getNote(this.noteId);
+    }
+
+    /** @returns {NoteShort} */
+    async getParentNote() {
+        return this.treeCache.getNote(this.parentNoteId);
+    }
+
+    /** @returns {boolean} true if it's top level, meaning its parent is root note */
+    isTopLevel() {
+        return this.parentNoteId === 'root';
+    }
+
+    get toString() {
+        return `Branch(branchId=${this.branchId})`;
+    }
+}
+
+export default Branch;