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rustdoc: avoid calling document.write after the page loads

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This commit is contained in:
Michael Howell 2023-09-14 12:56:15 -07:00
parent 7e86fd61e8
commit ab41e2b6dc
1 changed files with 12 additions and 2 deletions
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10
src/librustdoc/html/static/js/storage.js
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@ -131,8 +131,18 @@ function switchTheme(newThemeName, saveTheme) {
const newHref = getVar("root-path") + newThemeName +
getVar("resource-suffix") + ".css";
if (!window.currentTheme) {
// If we're in the middle of loading, document.write blocks
// rendering, but if we are done, it would blank the page.
if (document.readyState === "loading") {
document.write(`<link rel="stylesheet" id="themeStyle" href="${newHref}">`);
window.currentTheme = document.getElementById("themeStyle");
} else {
window.currentTheme = document.createElement("link");
window.currentTheme.rel = "stylesheet";
window.currentTheme.id = "themeStyle";
window.currentTheme.href = newHref;
document.documentElement.appendChild(window.currentTheme);
}
} else if (newHref !== window.currentTheme.href) {
window.currentTheme.href = newHref;
}