From dc754cbc9763b3ea6979ed55bd4e8030fe073078 Mon Sep 17 00:00:00 2001
From: Robin Krahl <robin.krahl@ireas.org>
Date: Fri, 11 Jan 2019 01:54:49 +0000
Subject: Check DISPLAY environment variable in default_backend

This patch changes the default_backend to also check the DISPLAY
environment variable.  If it is set, there probably is a X server
running, so we try to use the zenity backend.  Otherwise, the dialog
backend is used.
---
 src/backends/zenity.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/backends/zenity.rs')

diff --git a/src/backends/zenity.rs b/src/backends/zenity.rs
index 4bf862b..0730c64 100644
--- a/src/backends/zenity.rs
+++ b/src/backends/zenity.rs
@@ -59,6 +59,10 @@ impl Zenity {
         self.timeout = Some(timeout.to_string());
     }
 
+    pub(crate) fn is_available() -> bool {
+        super::is_available("zenity")
+    }
+
     fn execute(&self, args: Vec<&str>, title: &Option<String>) -> Result<process::Output> {
         let mut command = process::Command::new("zenity");
 
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