Commits on Nov 15, 2024

1. Support setting img[alt] on ManagedAttachment …

   Extend the `PreviewableAttachmentView` to assign
   [HTMLImageElement.alt][] based on the `Attachment` instance's `"alt"`
   attribute.
   
   This enables applications to set the [preview image's alt text][4.8.4.4]
   while editing inside the `<trix-editor>` element. For example, an
   application can modify a `ManagedAttachment` instance through a
   `trix-attachment-add` event listener:
   
   ```js
   addEventListener("trix-attachment-add", ({ attachment }) => {
     attachment.setAttributes({ alt: `Attached file ${attachment.file.name}` })
   })
   ```
   
   [HTMLImageElement.alt]: https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/alt
   [4.8.4.4]: https://html.spec.whatwg.org/multipage/images.html#alt

   

   seanpdoyle committed Nov 15, 2024
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