Fix elipsis button not working if the last commit loading is deferred #29544

yardenshoham · 2024-03-02T12:54:52Z

Before this change, if we had more than 200 entries being deferred in loading, the entire table would get replaced thus losing any event listeners attached to the elements within the table, such as the elipsis button and commit list with tippy.

With this change we remove the previous javascript code that replaced the table and use htmx to replace the table.

htmx attributes added:

hx-indicator="tr.notready td.message span": attach the loading spinner to the files whose last commit is still being loaded
hx-trigger="load" trigger the request-replace behavior as soon as possible
hx-swap="morph": use the idiomorph morphing algorithm, this is the thing that makes it so the elipsis button event listener is kept during the replacement, fixing the bug because we don't actually replace the table, only modifying it
hx-post="{{.LastCommitLoaderURL}}": make a post request to this url to get the table with all of the commit information

As part of this change I removed the handling of partial replacement in the case we have less than 200 "not ready" files. The first reason is that I couldn't make htmx replace only a subset of returned elements, the second reason is that we have a cache implemented in the backend already so the only cost added is that we query the cache a few times (which is sure to be populated due to the initial request), and the last reason is that since the last refactor of this functionality that removed jQuery we don't properly send the "not ready" entries as the backend expects FormData with f[] and we send a JSON with f so we always query for all rows anyway.

Before

After

Before this change, if we had more than 200 entries being deferred in loading, the entire table would get replaced thus losing any event listeners attached to the elements within the table, such as the elipsis button and commit list with tippy. With this change we remove the previous javascript code that replaced the table and use htmx to replace the table. htmx attributes added: - `hx-indicator="tr.notready td.message span"`: attach the loading spinner to the files whose last commit is still being loaded - `hx-trigger="load[this.querySelectorAll('tr.notready').length > 0]"` trigger the request-replace behavior as soon as possible and only if the current table is showing files that haven't had their latest commit info loaded. If this inline javascript doesn't look good I can change it so the backend doesn't render the htmx attributes if it's an htmx request, and the trigger would simply be `load` but I like it as it is now - `hx-swap="morph"`: use the idiomorph morphing algorithm, this is the thing that makes it so the elipsis button event listener is kept during the replacement, fixing the bug - `hx-post="{{.LastCommitLoaderURL}}"`: make a post request to this url to get the table with all of the commit information As part of this change I removed the handling of partial replacement in the case we have less than 200 "not ready" files. The first reason is that I couldn't make htmx replace only a subset of returned elements, the second reason is that we have a cache implemented in the backend already so the only cost added is that we query the cache a few times (which is sure to be populated due to the initial request), and the last reason is that since the last refactor of this functionality that removed jQuery we don't properly send the "not ready" entries as the backend expects `FormData` with `f[]` and we send a JSON with `f` so we always query for all rows anyway. Signed-off-by: Yarden Shoham <git@yardenshoham.com>

yardenshoham · 2024-03-02T13:13:42Z

cc @delvh because of #29230 (comment)

templates/repo/view_list.tmpl

routers/web/repo/view.go

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

wxiaoguang · 2024-03-02T16:02:53Z

ps: does it really fixe "elipsis button not working if the last commit loading is deferred"?

I think it is a longstanding problem, because since the code before #29230, initRepoEllipsisButton is not really called if the last commit loading is deferred?

yardenshoham · 2024-03-02T16:05:01Z

It fixes the bug as you can see in the GIF. Also, yes this bug existed before #29230. See #29230 (comment)

wxiaoguang · 2024-03-02T16:06:29Z

It fixes the bug as you can see in the GIF. Also, yes this bug existed before #29230. See #29230 (comment)

Which line/block of code of this PR fixes "elipsis button not working if the last commit loading is deferred" ? I don't see when/where the initRepoEllipsisButton is called differently.

yardenshoham · 2024-03-02T16:07:40Z

hx-swap="morph": use the idiomorph morphing algorithm, this is the thing that makes it so the elipsis button event listener is kept during the replacement, fixing the bug because we don't actually replace the table, only modifying it

wxiaoguang · 2024-03-02T16:11:52Z

Well, the question is: "if the last commit loading is deferred" (The code: {{if .LatestCommit}}), is there any "ellipsis button" on the UI? If no, then the button would be loaded by htmx, then how could it gets its event listener?

I guess it is a longstanding problem and is not in this PR's scope. I am just curious about the details. So feel free to ignore these comments.

yardenshoham · 2024-03-02T16:19:27Z

I understand you now, using hx-on::load could help but the guidelines forbid it. So this PR doesn't fix the bug in all cases. The edge case where we have a multi-line message in a deferred commit is not covered. This PR does cover all other cases.

After this PR gets merged I see 2 ways forward:

MutationObserver
hx-on::load

I can send a PR with hx-on::load and we will continue the discussion there

wxiaoguang · 2024-03-02T16:21:47Z

After more thoughts, I guess we could just do nothing.

By reading the code, I think maybe the "LatestCommit" couldn't be nil .... if I understand correctly, GetCommitsInfo always returns LatestCommit

if it is so, then so far so good, nothing need to do. The old template code for handling LatestCommit==nil is just a no-op
if it is not so .... then if LatestCommit is nil, then it is a new problem. I guess it shouldn't be this case.

So I'd like to keep it simple, until some problems really happen one day .......

yardenshoham · 2024-03-02T16:22:53Z

Agreed

silverwind · 2024-03-02T16:24:27Z

Remove the "..." from the loading states? One indicator is enough imho.

* upstream/main: Breaking summary for template refactoring (go-gitea#29395) [skip ci] Updated translations via Crowdin Fix incorrect cookie path for AppSubURL (go-gitea#29534) gitea.service: Remove syslog.target (go-gitea#29550) Add option to set language in admin user view (go-gitea#28449) Fix elipsis button not working if the last commit loading is deferred (go-gitea#29544) Fix incorrect relative/absolute URL usages (go-gitea#29531) Add support for API blob upload of release attachments (go-gitea#29507) Fix queue worker incorrectly stopped when there are still more items in the queue (go-gitea#29532) remove util.OptionalBool and related functions (go-gitea#29513) Rename Action.GetDisplayName to GetActDisplayName (go-gitea#29540) Make PR form use toast to show error message (go-gitea#29545)

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Merge branch 'main' into morph-elipsis

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Check before applying htmx attributes

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Update routers/web/repo/view.go

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

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Fix elipsis button not working if the last commit loading is deferred #29544

Fix elipsis button not working if the last commit loading is deferred #29544

yardenshoham commented Mar 2, 2024 •

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Fix elipsis button not working if the last commit loading is deferred #29544

Fix elipsis button not working if the last commit loading is deferred #29544

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