From 02190c44f7072b4fdaca50836a583f955866f8de Mon Sep 17 00:00:00 2001
From: Robin Krahl <robin.krahl@ireas.org>
Date: Fri, 11 Jan 2019 01:24:16 +0000
Subject: Check the DIALOG environment variable in default_backend

This patch changes the logic in default_backend to respect the DIALOG
environment variable that may contain the name of the backend to use.
---
 src/backends/mod.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/backends')

diff --git a/src/backends/mod.rs b/src/backends/mod.rs
index b9cecd0..20cb8c1 100644
--- a/src/backends/mod.rs
+++ b/src/backends/mod.rs
@@ -31,3 +31,11 @@ pub trait Backend {
     /// Shows the given question dialog and returns the choice.
     fn show_question(&self, question: &super::Question) -> Result<super::Choice>;
 }
+
+pub(crate) fn from_str(s: &str) -> Option<Box<dyn Backend>> {
+    match s.to_lowercase().as_ref() {
+        "dialog" => Some(Box::new(Dialog::new())),
+        "zenity" => Some(Box::new(Zenity::new())),
+        _ => None,
+    }
+}
-- 
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