From c00a34d023dcd2547ec952f9f994592c3a6396cf Mon Sep 17 00:00:00 2001
From: Ankush Menat <ankush@frappe.io>
Date: Wed, 28 Feb 2024 15:25:28 +0530
Subject: [PATCH] fix(UX): set default print language from print format

---
 frappe/public/js/frappe/views/communication.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/frappe/public/js/frappe/views/communication.js b/frappe/public/js/frappe/views/communication.js
index 30b42719bf..332fea14f9 100755
--- a/frappe/public/js/frappe/views/communication.js
+++ b/frappe/public/js/frappe/views/communication.js
@@ -47,6 +47,7 @@ frappe.views.CommunicationComposer = class {
 	}
 
 	get_fields() {
+		let me = this;
 		const fields = [
 			{
 				label: __("To"),
@@ -144,6 +145,9 @@ frappe.views.CommunicationComposer = class {
 				label: __("Select Print Format"),
 				fieldtype: "Select",
 				fieldname: "select_print_format",
+				onchange: function () {
+					me.guess_language();
+				},
 			},
 			{
 				label: __("Print Language"),
@@ -195,6 +199,19 @@ frappe.views.CommunicationComposer = class {
 		return fields;
 	}
 
+	guess_language() {
+		// when attach print for print format changes try to guess language
+		// if print format has language then set that else boot lang.
+		let lang = frappe.boot.lang;
+
+		let print_format = this.dialog.get_value("select_print_format");
+
+		if (print_format != "Standard") {
+			lang = frappe.get_doc("Print Format", print_format)?.default_print_language || lang;
+		}
+		this.dialog.set_value("print_language", lang);
+	}
+
 	toggle_more_options(show_options) {
 		show_options = show_options || this.dialog.fields_dict.more_options.df.hidden;
 		this.dialog.set_df_property("more_options", "hidden", !show_options);
@@ -504,6 +521,7 @@ frappe.views.CommunicationComposer = class {
 		} else {
 			$(fields.attach_document_print.wrapper).toggle(false);
 		}
+		this.guess_language();
 	}
 
 	setup_attach() {