feat: Expand All nodes option in Desktop view

erpnext/utilities/hierarchy_chart.py

@@ -0,0 +1,29 @@
+# Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and Contributors
+# MIT License. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+from frappe import _
+
+@frappe.whitelist()
+def get_all_nodes(parent, parent_name, method, company):
+	'''Recursively gets all data from nodes'''
+	method = frappe.get_attr(method)
+
+	if not method in frappe.whitelisted:
+		frappe.throw(_('Not Permitted'), frappe.PermissionError)
+
+	data = method(parent, company)
+	result = [dict(parent=parent, parent_name=parent_name, data=data)]
+
+	nodes_to_expand = [{'id': d.get('id'), 'name': d.get('name')} for d in data if d.get('expandable')]
+
+	while nodes_to_expand:
+		parent = nodes_to_expand.pop(0)
+		data = method(parent.get('id'), company)
+		result.append(dict(parent=parent.get('id'), parent_name=parent.get('name'), data=data))
+		for d in data:
+			if d.get('expandable'):
+				nodes_to_expand.append({'id': d.get('id'), 'name': d.get('name')})
+
+	return result