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forgejo/templates
wxiaoguang e7ef94e00f
Introduce customized HTML elements, fix incorrect AppUrl usages in templates (#22861)
This PR follows:
* #21986
* #22831

This PR also introduce customized HTML elements, which would also help
problems like:
* #17760
* #21429
* #21440

With customized HTML elements, there won't be any load-search-replace
operations, and it can avoid page flicking (which @silverwind cares a
lot).

Browser support:
https://developer.mozilla.org/en-US/docs/Web/API/Window/customElements

# FAQ

## Why the component has the prefix?

As usual, I would strongly suggest to add prefixes for our own/private
names. The dedicated prefix will avoid conflicts in the future, and it
makes it easier to introduce various 3rd components, like GitHub's
`relative-time` component. If there is no prefix, it's impossible to
introduce another public component with the same name in the future.

## Why the `custcomp.js` is loaded before HTML body? The `index.js` is
after HTML body.

Customized components must be registered before the content loading.
Otherwise there would be still some flicking.

`custcomp.js` should have its own dependencies and should be very light,
so it won't affect the page loading time too much.

## Why use `data-url` attribute but not use the `textContent`?

According to the standard, the `connectedCallback` occurs on the
tag-opening moment. The element's children are not ready yet.

## Why not use `{{.GuessCurrentOrigin $.ctx ...}}` to let backend decide
the absolute URL?

It's difficult for backend to guess the correct protocol(scheme)
correctly with zero configuration. Generating the absolute URL from
frontend can guarantee that the URL is 100% correct -- since the user is
visiting it.

# Screenshot

<details>

![image](https://user-images.githubusercontent.com/2114189/218256757-a267c8ba-3108-4755-9ae5-329f1b08f615.png)

</details>
1 year ago
..
admin Add context cache as a request level cache (#22294) 1 year ago
api/packages/pypi Add Package Registry (#16510) 2 years ago
base Introduce customized HTML elements, fix incorrect AppUrl usages in templates (#22861) 1 year ago
code Remove Fomantic-UI's `.hidden` CSS class for menu elements (#22895) 1 year ago
custom Add footer extra links template (#9576) 4 years ago
explore Add context cache as a request level cache (#22294) 1 year ago
mail Use link in UI which returned a relative url but not html_url which contains an absolute url (#21986) 1 year ago
org Add context cache as a request level cache (#22294) 1 year ago
package Introduce customized HTML elements, fix incorrect AppUrl usages in templates (#22861) 1 year ago
projects Move helpers to be prefixed with `gt-` (#22879) 1 year ago
repo Introduce customized HTML elements, fix incorrect AppUrl usages in templates (#22861) 1 year ago
shared Add context cache as a request level cache (#22294) 1 year ago
status Move helpers to be prefixed with `gt-` (#22879) 1 year ago
swagger Introduce customized HTML elements, fix incorrect AppUrl usages in templates (#22861) 1 year ago
user Sort issues and pulls by recently updated in user and organization home (#22925) 1 year ago
home.tmpl Add main landmark to templates and adjust titles (#22670) 1 year ago
install.tmpl Move helpers to be prefixed with `gt-` (#22879) 1 year ago
post-install.tmpl Introduce customized HTML elements, fix incorrect AppUrl usages in templates (#22861) 1 year ago