Unfloyded/Legamunt
0
0
Fork 0
Code Activity

Improve dropdown menu keyboard navigation (#11491)

Browse source 
* Allow selecting menu items with the space bar in status dropdown menus

* Fix modals opened by keyboard navigation being immediately closed

* Fix menu items triggering modal actions

* Add Tab trapping inside dropdown menu

* Give focus back to last focused element when status dropdown menu closes
This commit is contained in:
ThibG 2019-08-06 11:59:46 +02:00 • committed by Eugen Rochko
parent 5c73746b69
commit a12f1a0baf
4 changed files with 30 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

44
app/javascript/mastodon/components/dropdown_menu.js
View file

@ -45,7 +45,10 @@ class DropdownMenu extends React.PureComponent {
document.addEventListener('click', this.handleDocumentClick, false);
document.addEventListener('keydown', this.handleKeyDown, false);
document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
if (this.focusedItem && this.props.openedViaKeyboard) this.focusedItem.focus();
this.activeElement = document.activeElement;
if (this.focusedItem && this.props.openedViaKeyboard) {
this.focusedItem.focus();
}
this.setState({ mounted: true });
}
@ -53,6 +56,9 @@ class DropdownMenu extends React.PureComponent {
document.removeEventListener('click', this.handleDocumentClick, false);
document.removeEventListener('keydown', this.handleKeyDown, false);
document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
if (this.activeElement) {
this.activeElement.focus();
}
}
setRef = c => {
@ -81,6 +87,18 @@ class DropdownMenu extends React.PureComponent {
element.focus();
}
break;
case 'Tab':
if (e.shiftKey) {
element = items[index-1] || items[items.length-1];
} else {
element = items[index+1] || items[0];
}
if (element) {
element.focus();
e.preventDefault();
e.stopPropagation();
}
break;
case 'Home':
element = items[0];
if (element) {
@ -93,11 +111,14 @@ class DropdownMenu extends React.PureComponent {
element.focus();
}
break;
case 'Escape':
this.props.onClose();
break;
}
}
handleItemKeyDown = e => {
if (e.key === 'Enter') {
handleItemKeyUp = e => {
if (e.key === 'Enter' || e.key === ' ') {
this.handleClick(e);
}
}
@ -126,7 +147,7 @@ class DropdownMenu extends React.PureComponent {
return (
<li className='dropdown-menu__item' key={`${text}-${i}`}>
<a href={href} target={target} data-method={method} rel='noopener' role='button' tabIndex='0' ref={i === 0 ? this.setFocusRef : null} onClick={this.handleClick} onKeyDown={this.handleItemKeyDown} data-index={i}>
<a href={href} target={target} data-method={method} rel='noopener' role='button' tabIndex='0' ref={i === 0 ? this.setFocusRef : null} onClick={this.handleClick} onKeyUp={this.handleItemKeyUp} data-index={i}>
{text}
</a>
</li>
@ -202,19 +223,6 @@ export default class Dropdown extends React.PureComponent {
this.props.onClose(this.state.id);
}
handleKeyDown = e => {
switch(e.key) {
case ' ':
case 'Enter':
this.handleClick(e);
e.preventDefault();
break;
case 'Escape':
this.handleClose();
break;
}
}
handleItemClick = e => {
const i = Number(e.currentTarget.getAttribute('data-index'));
const { action, to } = this.props.items[i];
@ -249,7 +257,7 @@ export default class Dropdown extends React.PureComponent {
const open = this.state.id === openDropdownId;
return (
<div onKeyDown={this.handleKeyDown}>
<div>
<IconButton
icon={icon}
title={title}