Restore the code that fullscreen at startup

README.md

@@ -1,6 +1,6 @@
 # alful
 
-This three-line extension makes Firefox Quantum open all windows in fullscreen
+This six-line extension makes Firefox Quantum open all windows in fullscreen
 to hide the toolbars in windowed mode (`full-screen-api.ignore-widgets = true`).
 All credits go to tazeat, who wrote the original version and suggested
 [the change to achieve the current behavior](https://github.com/tazeat/AutoFullscreen/issues/4#issuecomment-509723353).

alful.js

@@ -1,3 +0,0 @@
-browser.windows.onCreated.addListener(function (window) {
-    browser.windows.update(window.id, {state: "fullscreen"})
-})

background.js

@@ -0,0 +1,6 @@
+function fullscreen (window) {
+    browser.windows.update(window.id, {state: "fullscreen"})
+}
+
+browser.windows.getAll().then(windows => windows.forEach(fullscreen));
+browser.windows.onCreated.addListener(fullscreen);

manifest.json

@@ -1,12 +1,12 @@
 {
   "manifest_version": 2,
   "name": "alful",
-  "version": "0.1",
+  "version": "0.2",
 
   "description": "Lauch all Firefox Quantum windows fullscreen",
   "homepage_url": "https://github.com/McSinyx/alful",
   "icons": {"48": "icon.svg", "96": "icon.svg"},
 
-  "background": {"scripts": ["alful.js"]},
+  "background": {"scripts": ["background.js"]},
   "applications": {"gecko": {"strict_min_version": "48.0"}}
 }