From eb6b64f4b1f5c8931565edb9f17a73cc28514e56 Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Fri, 31 Jan 2020 08:03:09 +1000
Subject: [PATCH] ignore foreground/background colour in spans when night mode
 active

This prevents pasted text from a standard webpage appearing as
black on white. It could theoretically be made smarter in the future,
but handling all the situations where the background or foreground
colour is not exactly #000/#fff might be tricky.
---
 qt/ts/src/editor.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/qt/ts/src/editor.ts b/qt/ts/src/editor.ts
index 7486fccc5..e0cf8709b 100644
--- a/qt/ts/src/editor.ts
+++ b/qt/ts/src/editor.ts
@@ -464,6 +464,10 @@ const allowedStyling = {
     "text-decoration-line": true,
 };
 
+let isNightMode = function(): boolean {
+    return document.body.classList.contains("nightMode");
+};
+
 let filterExternalSpan = function(node) {
     // filter out attributes
     let toRemove = [];
@@ -486,6 +490,12 @@ let filterExternalSpan = function(node) {
             // google docs adds this unnecessarily
             toRemove.push(name);
         }
+        if (isNightMode()) {
+            // ignore coloured text in night mode for now
+            if (name === "background-color" || name == "color") {
+                toRemove.push(name);
+            }
+        }
     }
     for (let name of toRemove) {
         node.style.removeProperty(name);