Add makeSingleInstance helper function

kevinsawicki · kevinsawicki · commit c5bfcf1cf595 · 2016-04-14T08:59:02.000-07:00
diff --git a/main.js b/main.js
@@ -14,13 +14,7 @@ process.throwDeprecation = true
 var mainWindow = null
 
 function initialize () {
-  var shouldQuit = app.makeSingleInstance(function () {
-    if (mainWindow) {
-      if (mainWindow.isMinimized()) mainWindow.restore()
-      mainWindow.focus()
-    }
-  })
-
+  var shouldQuit = makeSingleInstance()
   if (shouldQuit) {
     app.quit()
     return
@@ -69,6 +63,22 @@ function initialize () {
   })
 }
 
+// Make this app a single instance app.
+//
+// The main window will be restored and focused instead of a second window
+// opened when a person attempts to launch a second instance.
+//
+// Returns true if the current version of the app should quit instead of
+// launching.
+function makeSingleInstance () {
+  return app.makeSingleInstance(function () {
+    if (mainWindow) {
+      if (mainWindow.isMinimized()) mainWindow.restore()
+      mainWindow.focus()
+    }
+  })
+}
+
 // Handle Squirrel on Windows startup events
 switch (process.argv[1]) {
   case '--squirrel-install':
