From e25ab36ba8675322cefbcd5a174b0388ea957381 Mon Sep 17 00:00:00 2001
From: DD <liudi08@gmail.com>
Date: Mon, 15 Oct 2018 11:12:16 -0400
Subject: [PATCH] Add comments
---
src/containers/gui.jsx | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/containers/gui.jsx b/src/containers/gui.jsx
index e4748805c..2c4c55be2 100644
--- a/src/containers/gui.jsx
+++ b/src/containers/gui.jsx
@@ -50,6 +50,9 @@ class GUI extends React.Component {
const getFontPromises = () => {
const fontPromises = [];
+ // Browsers that support the font loader interface have an iterable document.fonts.values()
+ // Firefox has a mocked out object that doesn't actually implement iterable, which is why
+ // the deep safety check is necessary.
if (document.fonts &&
typeof document.fonts.values === 'function' &&
typeof document.fonts.values()[Symbol.iterator] === 'function') {
@@ -61,6 +64,8 @@ class GUI extends React.Component {
return fontPromises;
};
+ // Font promises must be gathered after the document is loaded, because on Mac Chrome, the promise
+ // objects get replaced and the old ones never resolve.
if (document.readyState === 'complete') {
Promise.all(getFontPromises()).then(this.loadProject);
} else {
--
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