How to style monaco editor context menu

Question

I need to change the css style of the default context menu but I couldn't inspect the classes because it's closed when it out of focus, so if any one knows the classes or know how to adjust the style using javascript can help.

Answer 1

Press F12 to show the console. Input the code and press enter.

setTimeout(() => {debugger;}, 1000);

You may open the context menu in 1 second before the browser paused. Then you can inspect the element.

.monaco-menu > .monaco-action-bar.vertical {
  color: red !important;
}

But since 0.12 the context menu is under shadow-root and the there is no element declare part attribute. So in the host there is no way to rewrite the style.

Answer 2

I had similar issue, where I needed to replace the icons that appear in the completion menu.

From the Network tab of the browser, I opened the file editor.main.css.

There, you can see the css selectors, and the embedded svg-xml for the icons.

For example, to replace the icons used for 'methods' or 'functions' in the completion menu, add this to your html (after the Monaco stylesheet is loaded)

.monaco-editor .suggest-widget .monaco-list .monaco-list-row .suggest-icon.method::before,
.monaco-editor .suggest-widget .monaco-list .monaco-list-row .suggest-icon.function::before
/* copied from lightbulb */
{ background-image: url(data:image/svg+xml;base64,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) !important; }