adding data browser

src/models/tree-node.ts

@@ -0,0 +1,38 @@
+import { Action } from './action';
+
+export class TreeNode {
+  label: string;
+  data: any;
+  children: TreeNode[];
+  leaf: boolean;
+  expanded: boolean;
+  hidden: boolean;
+  disabled: boolean;
+  selected: boolean;
+  actions: Action[];
+
+  index: number;
+  isFirst: boolean;
+  isLast: boolean;
+
+  constructor(data: Partial<TreeNode>) {
+    this.label = data?.label ?? '';
+    this.data = data?.data ?? null;
+    this.children = (data?.children ?? []).map(
+      (i: Partial<TreeNode>, index: number) =>
+        new TreeNode({ ...i, ...{ index: index } })
+    );
+    this.leaf = data?.leaf ?? this.children.length === 0;
+    this.expanded = data?.expanded ?? false;
+    this.hidden = data?.hidden ?? false;
+    this.disabled = data?.disabled ?? false;
+    this.selected = data?.selected ?? false;
+    this.actions = (data?.actions ?? []).map(
+      (i: Partial<Action>) => new Action(i)
+    );
+
+    this.index = data?.index ?? 0;
+    this.isFirst = data?.isFirst ?? false;
+    this.isLast = data?.isLast ?? false;
+  }
+}