Is it possible to disable a block style?

I think it needs to be done in javascript with wp.blocks.unregisterBlockStyle(). Although, as mentioned on that documentation page, there can be a bit of a race condition if your script tries to unregister a style before it's registered. Even using wp.domReady() I still needed a timeout to ensure the unregistration happened after the style was registered. Probably, we need to use a different event for Drupal Gutenberg but I don't know what that is.

In the meantime, if you can handle the timeout, here's wha that looks like:

wp.domReady( () => {
  setTimeout(() => {
    // Remove the rounded style from the core/image block.
    wp.blocks.unregisterBlockStyle( 'core/image', 'rounded' );
  }, 1000);
} );

Thanks.

I was able to do this following the register-filters.jsx example in the gutenberg_starter theme, which seems to do the trick.

((Drupal, wp) => {
  const {t} = Drupal;
  const {hooks, blockEditor} = wp;
  const {addFilter} = hooks;
  const {BlockControls} = blockEditor;


  /**
   * This filter will alter image block by removing its styles.
   */
  addFilter(
    'blocks.registerBlockType',
    'MYTHEME/remove-image-block-styles',
    (settings, name) => {

      if (name === "core/image") {
        return {
          ...settings,
          styles: []
        };
      }
      else {
        return settings;
      }
    },
  );
})(Drupal, wp);

Ah beauty! That's good to know - thanks for reporting back 🙌

I'm glad the starter theme is helping, that's what it was made for 😅

Automatically closed - issue fixed for 2 weeks with no activity.