Steps to reproduce the bug:
- Add an "Image Gallery" on the website.
- Add a new image on the snippet.
-> Problem: the thumbnail of the first image of the carousel has been
replaced by the new added image.
To solve the problem, the triggering of the `image_changed` event has
been removed on extra image added. It was introduced by [1] to trigger
the re-rendering of the thumbnail when adding a new image on the
carousel but was actually useless. Indeed, the mechanism was the same as
now; when a new image was added on the carousel, the
`website.gallery.slideshow` that already handles the thumbnails was
re-rendered. An important thing to note is that the system was also
never intercepting this `image_changed` event as it was triggered on an
element that was not in the DOM (as it was removed at the
`_replaceContent()` call in the `slideshow()` method). However, since
[2], the images rendered by the `website.gallery.slideshow` are replaced
by the images (or the wrapped anchored images) returned by
`_getImgHolderEls`. Therefore, `$newImageToSelect` is part of the DOM
and the `image_changed` event is intercepted by the gallery option. As
the active carousel item is always the first one of the carousel after a
`website.gallery.slideshow` re-rendering, the system changed the
thumbnail of the first item with the new added image.
[1]: https://github.com/odoo/odoo/commit/85990768592cbdefbb178b5ffa38c1e29b9eeb87
[2]: https://github.com/odoo/odoo/commit/0fd2477d993e822fe6fd4497aace9f746af7a481
task-3736301
closesodoo/odoo#153717
X-original-commit: 3c4239212e7bedc3cb49f34d9eb0a23c3de0cbd6
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>
Signed-off-by: Colin Louis (loco) <loco@odoo.com>
Louis (loco)
6f97b60477