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Code Issues Releases Wiki Activity

update: forum/components/PostStream

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This commit is contained in:
Alexander Skvortsov
2020-08-09 23:30:39 -04:00
committed by Franz Liedke
parent 2fb885175a
commit 89b6847710
1 changed files with 19 additions and 13 deletions
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32
js/src/forum/components/PostStream.js
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@@ -8,7 +8,7 @@ import Button from '../../common/components/Button';
* The `PostStream` component displays an infinitely-scrollable wall of posts in
* a discussion. Posts that have not loaded will be displayed as placeholders.
*
* ### Props
* ### Attrs
*
* - `discussion`
* - `stream`
@@ -16,9 +16,11 @@ import Button from '../../common/components/Button';
* - `onPositionChange`
*/
export default class PostStream extends Component {
init() {
this.discussion = this.props.discussion;
this.stream = this.props.stream;
oninit(vnode) {
super.oninit(vnode);
this.discussion = this.attrs.discussion;
this.stream = this.attrs.stream;
this.scrollListener = new ScrollListener(this.onscroll.bind(this));
}
@@ -96,29 +98,33 @@ export default class PostStream extends Component {
return <div className="PostStream">{items}</div>;
}
config(isInitialized, context) {
onupdate(vnode) {
this.triggerScroll();
}
if (isInitialized) return;
oncreate(vnode) {
super.oncreate(vnode);
this.triggerScroll();
// This is wrapped in setTimeout due to the following Mithril issue:
// https://github.com/lhorie/mithril.js/issues/637
setTimeout(() => this.scrollListener.start());
}
context.onunload = () => {
this.scrollListener.stop();
clearTimeout(this.calculatePositionTimeout);
};
onremove(vnode) {
this.scrollListener.stop();
clearTimeout(this.calculatePositionTimeout);
}
/**
* Start scrolling, if appropriate, to a newly-targeted post.
*/
triggerScroll() {
if (!this.props.targetPost) return;
if (!this.attrs.targetPost) return;
const oldTarget = this.prevTarget;
const newTarget = this.props.targetPost;
const newTarget = this.attrs.targetPost;
if (oldTarget) {
if ('number' in oldTarget && oldTarget.number === newTarget.number) return;
@@ -265,7 +271,7 @@ export default class PostStream extends Component {
});
if (startNumber) {
this.props.onPositionChange(startNumber || 1, endNumber, startNumber);
this.attrs.onPositionChange(startNumber || 1, endNumber, startNumber);
}
}