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php-flarum/js/src/forum/components/DiscussionList.js
David Sevilla Martín 71f3379fcc Mithril 2 update (#2255)
* Update frontend to Mithril 2

- Update Mithril version to v2.0.4
- Add Typescript typings for Mithril
- Rename "props" to "attrs"; "initProps" to "initAttrs"; "m.prop" to "m.stream"; "m.withAttr" to "utils/withAttr".
- Use Mithril 2's new lifecycle hooks
- SubtreeRetainer has been rewritten to be more useful for the new system
- Utils for forcing page re-initializations have been added (force attr in links, setRouteWithForcedRefresh util)
- Other mechanical changes, following the upgrade guide
- Remove some of the custom stuff in our Component base class
- Introduce "fragments" for non-components that control their own DOM
- Remove Mithril patches, introduce a few new ones (route attrs in <a>; 
- Redesign AlertManagerState `show` with 3 overloads: `show(children)`, `show(attrs, children)`, `show(componentClass, attrs, children)`
- The `affixedSidebar` util has been replaced with an `AffixedSidebar` component

Challenges:
- `children` and `tag` are now reserved, and can not be used as attr names
- Behavior of links to current page changed in Mithril. If moving to a page that is handled by the same component, the page component WILL NOT be re-initialized by default. Additional code to keep track of the current url is needed (See IndexPage, DiscussionPage, and UserPage for examples)
- Native Promise rejections are shown on console when not handled
- Instances of components can no longer be stored. The state pattern should be used instead.

Refs #1821.

Co-authored-by: Alexander Skvortsov <sasha.skvortsov109@gmail.com>
Co-authored-by: Matthew Kilgore <tankerkiller125@gmail.com>
Co-authored-by: Franz Liedke <franz@develophp.org>
2020-09-23 22:40:37 -04:00

54 lines
1.7 KiB
JavaScript

import Component from '../../common/Component';
import DiscussionListItem from './DiscussionListItem';
import Button from '../../common/components/Button';
import LoadingIndicator from '../../common/components/LoadingIndicator';
import Placeholder from '../../common/components/Placeholder';
/**
* The `DiscussionList` component displays a list of discussions.
*
* ### Attrs
*
* - `state` A DiscussionListState object that represents the discussion lists's state.
*/
export default class DiscussionList extends Component {
view() {
const state = this.attrs.state;
const params = state.getParams();
let loading;
if (state.isLoading()) {
loading = LoadingIndicator.component();
} else if (state.moreResults) {
loading = Button.component(
{
className: 'Button',
onclick: state.loadMore.bind(state),
},
app.translator.trans('core.forum.discussion_list.load_more_button')
);
}
if (state.empty()) {
const text = app.translator.trans('core.forum.discussion_list.empty_text');
return <div className="DiscussionList">{Placeholder.component({ text })}</div>;
}
return (
<div className={'DiscussionList' + (state.isSearchResults() ? ' DiscussionList--searchResults' : '')}>
<ul className="DiscussionList-discussions">
{state.discussions.map((discussion) => {
return (
<li key={discussion.id()} data-id={discussion.id()}>
{DiscussionListItem.component({ discussion, params })}
</li>
);
})}
</ul>
<div className="DiscussionList-loadMore">{loading}</div>
</div>
);
}
}