Gutenberg: support Gallery block

[jeherve]

Steps to reproduce the issue

1. Install the Gutenberg plugin.
2. Create a new post.
3. Create a gallery block.
4. There are no options to pick a gallery type during the gallery creation process. This seems to be a Gutenberg issue: Gallery: choosing thumbnail size WordPress/gutenberg#1450
5. Once you create the gallery and publish the post, you will notice that Carousel is not triggered when clicking on the images on the front-end. That is because Gutenberg galleries use their own markup, as per Gallery block markup in the front-end WordPress/gutenberg#2900

We would need to make sure that both Tiled Galleries and Carousel can be applied to Gutenberg galleries.

Related:

• Gallery: flow for adding new items WordPress/gutenberg#1704
• Gallery: Handle old gallery shortcode in Classic Text block, or use Switcher WordPress/gutenberg#1728

[stale]

This issue has been marked as stale. This happened because:

• It has been inactive in the past 6 months.
• It hasn’t been labeled `[Pri] Blocker`, `[Pri] High`.

No further action is needed. But it's worth checking if this ticket has clear reproduction steps and it is still reproducible. Feel free to close this issue if you think it's not valid anymore — if you do, please add a brief explanation.

[asm0dey]

It's still valid

[abcxyz-m]

Referenced as a continuing issue here:

• https://wordpress.org/support/topic/gutenberg-gallery-support/

[MichaelArestad]

I'm going to close this for now. We are proceeding by making a Jetpack tiled gallery block along with, potentially, a slideshow/carousel block.

[designsimply]

I searched and found #10145 is the PR for the tiled gallery block and wanted to note it here in case anyone would like to follow progress or if any testers with a dev environment would like to help test it when it's ready. 😊