Move window centering to utils

ext/src/lib/utils.js

@@ -8,3 +8,14 @@ export function getNextEllipsis (ellipsis) {
         else if (ellipsis === "...") "";
     };
 }
+
+export function getWindowCenteredProps (refWin, width, height) {
+    const centerX = refWin.left + (refWin.width / 2);
+    const centerY = refWin.top + (refWin.height / 3);
+
+    return {
+        width, height
+      , left: Math.floor(centerX - width / 2)
+      , top: Math.floor(centerY - height / 2)
+    };
+}

ext/src/main.js

@@ -4,6 +4,8 @@ import defaultOptions from "./options/defaultOptions";
 import getBridgeInfo from "./lib/getBridgeInfo";
 import messageRouter from "./lib/messageRouter";
 
+import { getWindowCenteredProps } from "./lib/utils";
+
 import semver from "semver";
 
 
@@ -335,26 +337,14 @@ let popupPort;
  * to close and returns an API error.
  */
 async function openPopup (shimId) {
-    const width = 350;
-    const height = 200;
-
     // Current window to base centered position on
     const win = await browser.windows.getCurrent();
-
-    // Top(mid)-center position
-    const centerX = win.left + (win.width / 2);
-    const centerY = win.top + (win.height / 3);
-
-    const left = Math.floor(centerX - (width / 2));
-    const top = Math.floor(centerY - (height / 2));
+    const centeredProps = getWindowCenteredProps(win, 350, 200);
 
     const popup = await browser.windows.create({
         url: "popup/index.html"
       , type: "popup"
-      , width
-      , height
-      , left
-      , top
+      , ...centeredProps
     });
 
     // Store popup details for message forwarding
@@ -363,10 +353,7 @@ async function openPopup (shimId) {
 
     // Size/position not set correctly on creation (bug?)
     await browser.windows.update(popup.id, {
-        width
-      , height
-      , left
-      , top
+        ...centeredProps
     });
 
     // Close popup on other browser window focus

ext/src/options/Bridge.jsx

@@ -1,7 +1,8 @@
 import React, { Component } from "react";
 import semver from "semver";
 
-import { getNextEllipsis } from "../lib/utils";
+import { getNextEllipsis
+       , getWindowCenteredProps } from "../lib/utils";
 
 const _ = browser.i18n.getMessage;
 
@@ -146,34 +147,19 @@ export default class Bridge extends Component {
     }
 
     async onUpdate () {
-        const width = 400;
-        const height = 150;
-
         // Current window to base centered position on
         const win = await browser.windows.getCurrent();
-
-        // Top(mid)-center position
-        const centerX = win.left + (win.width / 2);
-        const centerY = win.top + (win.height / 3);
-
-        const left = Math.floor(centerX - (width / 2));
-        const top = Math.floor(centerY - (height / 2));
+        const centeredProps = getWindowCenteredProps(win, 400, 150);
 
         const updaterPopup = await browser.windows.create({
             url: "../updater/index.html"
           , type: "popup"
-          , width
-          , height
-          , left
-          , top
+          , ...centeredProps
         });
 
         // Size/position not set correctly on creation (bug?)
         await browser.windows.update(updaterPopup.id, {
-            width
-          , height
-          , left
-          , top
+            ...centeredProps
         });
 
         browser.runtime.onConnect.addListener(port => {