MultiFilter for checkbox and palette fields

Support ticket opened with Acquia
Case Number
01071056

I create a MR to fix the issue with the single value select list, but the multi value select list still doesn't reset correctly.

Updated the MR to address #10 from IS

Refresh the page and select 2 or more values at once (holding down CMD or SHIFT), then it just gives me zero results and no way to clear it.

Now selecting multiple values should respect the filter_operation in the views filter config.
The Clear button still doesn't work correctly.

@Rajeshreeputra - Requested some changes, please take a look.

Updated as per review feedback, requesting review.

Verified recent changes and it looks good to me. I would request another sets of eyes.

I encountered an issue when using the patch while switching between grid and table with selected filters because the JavaScript was attempting to access the form element with id="views-exposed-form-acquia-dam-asset-library-widget". However, in some cases, it seems the form didn’t exist on the page, which resulted in a JavaScript error when trying to manipulate the form’s elements.

Error Message (with private information removed):
An error occurred while attempting to process https://your-site-url/admin/content/media-dam-widget/asset_library_type?media_library_opener_id=media_library.opener.editor&media_library_allowed_types[0]=documents_asset&media_library_allowed_types[1]=image_asset&...&_wrapper_format=drupal_ajax: document.getElementById(...) is null.

Root Cause:
The JavaScript was trying to interact with a form that wasn't present on the page at the time of execution, causing a null reference error.

Possible Solution:
By adding an early return when the form is not found, the script avoids further execution and prevents errors:

if (!form) {
  return;
}

This ensures that the script only proceeds if the form exists, avoiding the null reference issue. It worked for me, but you all might have more context on how to properly resolve it. I’m just sharing my input in case it helps.

I’ve attached the .diff → file for context and the image of the original issue (with private information removed).