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@Brandon-Lyons
Created January 25, 2019 09:50
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Save Brandon-Lyons/88e15135ffc227f5c3d425bd0f3f110d to your computer and use it in GitHub Desktop.
Slack Dark Mode
// First make sure the wrapper app is loaded
document.addEventListener("DOMContentLoaded", function() {
// Then get its webviews
let webviews = document.querySelectorAll(".TeamView webview");
// Fetch our CSS in parallel ahead of time
const cssPath = 'https://raw.githubusercontent.com/Nockiro/slack-black-theme/3ea2efdfb96ccc91549837ab237d57104181bbf8/custom.css';
let cssPromise = fetch(cssPath).then(response => response.text());
let customCustomCSS = `
:root {
/* Modify these to change your theme colors: */
--primary: #CCC;
--text: #999;
--background: #222;
--background-elevated: #444;
}
`
// Insert a style tag into the wrapper view
cssPromise.then(css => {
let s = document.createElement('style');
s.type = 'text/css';
s.innerHTML = css + customCustomCSS;
document.head.appendChild(s);
});
// Wait for each webview to load
webviews.forEach(webview => {
webview.addEventListener('ipc-message', message => {
if (message.channel == 'didFinishLoading')
// Finally add the CSS into the webview
cssPromise.then(css => {
let script = `
let s = document.createElement('style');
s.type = 'text/css';
s.id = 'slack-custom-css';
s.innerHTML = \`${css + customCustomCSS}\`;
document.head.appendChild(s);
`
webview.executeJavaScript(script);
})
});
});
});
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