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Change the post template visually #28390

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youknowriad
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@youknowriad youknowriad commented Jan 21, 2021

For block themes, this PR adds a modal to visually see the templates (Page templates) while changing it inside a modal.

Notes

  • Ideally, the modal is a fullscreen modal but our component doesn't support that yet, we need to revive the full screen modal separately.
  • Once we have a full screen modal we can consider some animation to slide the modal from the top or something.
  • Right now, I just added a temporary "Change" link next to the "Edit" link in the template section of the sidebar. We need a better placement for this and maybe replace the "Page attributes" template section entirely.
  • You'll notice that the "default" template (the one resolved using the CPT...) is not previewed properly, the problem is technical here, we don't have anyway to know what template to load there since it depends on the theme (it can be singlular, it can be single, page...), we might want a dedicated endpoint for this but it's going to be complex, so I think the current behavior might work to start with.

Testing instructions

  • Use a block theme.
  • Define some custom Page templates for your theme by adding the following to your experimental-theme.json and by adding the corresponding html files.
	"pageTemplates": {
		"custom": {
			"title": "My Custom Template"
		},
		"with-sidebar": {
			"title": "Template with sidebar"
		}
	}
  • Create a page, save it and then try to click the "change" link in the sidebar.

@youknowriad
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Time to get some feedback about this.

@youknowriad youknowriad marked this pull request as ready for review January 28, 2021 08:36
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Size Change: +1.48 kB (0%)

Total Size: 1.37 MB

Filename Size Change
build/block-editor/index.js 123 kB +18 B (0%)
build/edit-post/index.js 307 kB +851 B (0%)
build/edit-post/style-rtl.css 6.84 kB +304 B (+5%) 🔍
build/edit-post/style.css 6.83 kB +306 B (+5%) 🔍
ℹ️ View Unchanged
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@jasmussen
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Taking a look now, but I think I'm doing it wrong:

Screenshot 2021-01-28 at 10 40 04

@youknowriad
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@jasmussen mmm, this looks good to me. Weird that it doesn't work, I have the exact same thing.

@youknowriad
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Oh (try a page, not a post) just in case.

@jasmussen
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jasmussen commented Jan 28, 2021

Okay I got it working, and I see this:

behavior

Don't be confused, all three templates are the same, so the preview is correct.

This is a cool feature, big fan.

My thoughts immediately go to: how do we implement this in a way that feels even more intuitive? The flow as is can probably be tweaked to make for a good V1 — white background, better thumbnail treatment, hand cursor when hovering a template, stronger active state, better "default" thumbnail — and I'd be happy to help with that.

But in terms of the longer view, I would like to see if we can avoid the modal dialog altogether. I think of this in the same prespective as the preview dropdown resizing the canvas itself, rather than showing previews in a modal dialog. You are affecting the canvas, so you should affect the canvas, if that makes sense.

@jameskoster has made some amazing designs for how that might work, and issue #27850 is full of good ideas, notably this one helps give a good overview of templates available, while making it clear that it's the entire layout you're switching out.

But that design is probably a big step. A smaller interim step, towards that, might be this mockup:

Screenshot 2021-01-28 at 11 12 52

Essentially we resize the canvas, and show the templates above the canvas with the active one selected. How hard would such a step be to accomplish?

@youknowriad
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I don't like the "resize the canvas and show the template on top of it". What I don't like is the gymnastic it forces us to do in terms of CSS and potentially keyboard navigation/accessibility.

I feel we can get very close to that using a full screen modal:

  • Full screen modal showing the exact same design as the mockup above
  • We get the a11y of the modal pattern
  • We don't have to make any hacks to CSS to "resize the canvas" or anything.
  • We lose the resize canvas animation but maybe we can approach it with an nice animation to show the modal.

@jameskoster
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I rustled this together in the Inspector just to get an idea of how a full-screen modal might feel. With some design polishing I think it could work.

modal

@jasmussen
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I don't like the "resize the canvas and show the template on top of it". What I don't like is the gymnastic it forces us to do in terms of CSS and potentially keyboard navigation/accessibility.

Would some of the fancy "flip" animations that Jay outlined, for example the first one on this comment, help address this?

That animation, specifically, still feels like it manipulates the canvas itself, even if it does technically enter a modal.

@youknowriad
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Would some of the fancy "flip" animations that Jay outlined, for example the first one on this comment, help address this?

At this point, I don't know how we could achieve this animation. Using a modal basically mean rendering a new DOM tree in another place, and not reusing and animating the same element like that animation does. Maybe we could fake it somehow, but it's going to be difficult.

@jameskoster
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FWIW this "flipping" or "zooming" animation will likely have many other applications, if we can get it right. IE zooming in and out of the template editor / template mosaic view.

@lukecarbis
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I'd be interested for @ItsJonQ to weigh in on any fancy animations involved in bringing up the modal, and how they might fit with the G2 components design language.

@paaljoachim
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paaljoachim commented Feb 8, 2021

Perhaps we can use an existing modal that users, everyone uses a lot?
So that we can keep some consistency with existing modals.

Select-or-Upload-Media-modal

Btw lets try and keep animations and other visual affects showing transitions between states to a minimum. It can cause strain on the eyes when things shift around. It is better to have an obvious UX/UI giving a clear direction so the user can see an obvious before and after. Just by looking at the UI.

Base automatically changed from master to trunk March 1, 2021 15:45
@jameskoster
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I shared an alternative design concept for this over in #27850 (comment)

@youknowriad
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Closing this one for now. Some of this is being reused in #33770

@youknowriad youknowriad closed this Sep 3, 2021
@youknowriad youknowriad deleted the add/visual-change-template branch September 3, 2021 13:28
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