feat(utils.js): `parent` is now a explicit parameter of `setTimeout`

tests/ui/modules/Common/InvertedMouseArea.qml

@@ -95,7 +95,7 @@ Item {
           // call.
           //
           // The timeout is destroyed with the `MouseArea` component.
-          _timeout = Utils.setTimeout.call(
+          _timeout = Utils.setTimeout(
             this, 0, item.pressed.bind(this)
           )
         }

tests/ui/scripts/Utils/utils.js

@@ -84,13 +84,11 @@ function snakeToCamel (s) {
 // -------------------------------------------------------------------
 
 // A copy of `Window.setTimeout` from js.
-// Use setTimeout.call(parentContext, delayTime, cb) to use it.
-//
 // delay is in milliseconds.
-function setTimeout (delay, cb) {
+function setTimeout (parent, delay, cb) {
   var timer = new (function (parent) {
     return Qt.createQmlObject('import QtQuick 2.7; Timer { }', parent)
-  })(this)
+  })(parent)
 
   timer.interval = delay
   timer.repeat = false

tests/ui/scripts/Utils/utils.spec.qml

@@ -50,7 +50,7 @@ TestCase {
 
   function test_setTimeoutWithoutParent () {
     try {
-      Utils.setTimeout(0, function () {
+      Utils.setTimeout(null, 0, function () {
         fail('`setTimeout` was called without parent.')
       })
     } catch (e) {
@@ -67,7 +67,7 @@ TestCase {
 
   function test_setTimeout (data) {
     var failed = true
-    Utils.setTimeout.call(testCase, data.time, function () {
+    Utils.setTimeout(testCase, data.time, function () {
       failed = false
     })
 
@@ -93,7 +93,7 @@ TestCase {
 
   function test_clearTimeout (data) {
     var failed = false
-    var timeout = Utils.setTimeout.call(testCase, data.time, function () {
+    var timeout = Utils.setTimeout(testCase, data.time, function () {
       failed = true
     })