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Show more/Show less keep focus in a relevant place

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Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
This commit is contained in:
Michael Telatynski 2020-07-07 17:07:51 +01:00
parent 8ba2be0be5
commit 92e86af162
1 changed files with 13 additions and 2 deletions
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15
src/components/views/rooms/RoomSublist2.tsx
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@ -140,15 +140,25 @@ export default class RoomSublist2 extends React.Component<IProps, IState> {
};
private onShowAllClick = () => {
// TODO a11y keep focus somewhere useful: https://github.com/vector-im/riot-web/issues/14180
const numVisibleTiles = this.numVisibleTiles;
this.props.layout.visibleTiles = this.props.layout.tilesWithPadding(this.numTiles, MAX_PADDING_HEIGHT);
this.forceUpdate(); // because the layout doesn't trigger a re-render
setImmediate(this.focusRoomTile, numVisibleTiles); // focus the tile after the current bottom one
};
private onShowLessClick = () => {
// TODO a11y keep focus somewhere useful: https://github.com/vector-im/riot-web/issues/14180
this.props.layout.visibleTiles = this.props.layout.defaultVisibleTiles;
this.forceUpdate(); // because the layout doesn't trigger a re-render
// focus will flow to the show more button here
};
private focusRoomTile = (index: number) => {
if (!this.sublistRef.current) return;
const elements = this.sublistRef.current.querySelectorAll<HTMLDivElement>(".mx_RoomTile2");
const element = elements && elements[index];
if (element) {
element.focus();
}
};
private onOpenMenuClick = (ev: InputEvent) => {
@ -520,6 +530,7 @@ export default class RoomSublist2 extends React.Component<IProps, IState> {
</span>
);
if (this.props.isMinimized) showMoreText = null;
// TODO Roving tab index / treeitem?: https://github.com/vector-im/riot-web/issues/14180
showNButton = (
<AccessibleButton onClick={this.onShowAllClick} className={showMoreBtnClasses} tabIndex={-1}>
<span className='mx_RoomSublist2_showMoreButtonChevron mx_RoomSublist2_showNButtonChevron'>