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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
import React from "react";
import { connect } from "react-redux";
export class ContextMenu extends React.PureComponent {
constructor(props) {
super(props);
this.hideContext = this.hideContext.bind(this);
this.onShow = this.onShow.bind(this);
this.onClick = this.onClick.bind(this);
}
hideContext() {
this.props.onUpdate(false);
}
onShow() {
if (this.props.onShow) {
this.props.onShow();
}
}
componentDidMount() {
this.onShow();
setTimeout(() => {
global.addEventListener("click", this.hideContext);
}, 0);
}
componentWillUnmount() {
global.removeEventListener("click", this.hideContext);
}
onClick(event) {
// Eat all clicks on the context menu so they don't bubble up to window.
// This prevents the context menu from closing when clicking disabled items
// or the separators.
event.stopPropagation();
}
render() {
// Disabling focus on the menu span allows the first tab to focus on the first menu item instead of the wrapper.
return (
// eslint-disable-next-line jsx-a11y/interactive-supports-focus
<span className="context-menu">
<ul
role="menu"
onClick={this.onClick}
onKeyDown={this.onClick}
className="context-menu-list"
>
{this.props.options.map((option, i) =>
option.type === "separator" ? (
<li key={i} className="separator" role="separator" />
) : (
option.type !== "empty" && (
<ContextMenuItem
key={i}
option={option}
hideContext={this.hideContext}
keyboardAccess={this.props.keyboardAccess}
/>
)
)
)}
</ul>
</span>
);
}
}
export class _ContextMenuItem extends React.PureComponent {
constructor(props) {
super(props);
this.onClick = this.onClick.bind(this);
this.onKeyDown = this.onKeyDown.bind(this);
this.onKeyUp = this.onKeyUp.bind(this);
this.focusFirst = this.focusFirst.bind(this);
}
onClick(event) {
this.props.hideContext();
this.props.option.onClick(event);
}
// Focus the first menu item if the menu was accessed via the keyboard.
focusFirst(button) {
if (this.props.keyboardAccess && button) {
button.focus();
}
}
// This selects the correct node based on the key pressed
focusSibling(target, key) {
const parent = target.parentNode;
const closestSiblingSelector =
key === "ArrowUp" ? "previousSibling" : "nextSibling";
if (!parent[closestSiblingSelector]) {
return;
}
if (parent[closestSiblingSelector].firstElementChild) {
parent[closestSiblingSelector].firstElementChild.focus();
} else {
parent[closestSiblingSelector][
closestSiblingSelector
].firstElementChild.focus();
}
}
onKeyDown(event) {
const { option } = this.props;
switch (event.key) {
case "Tab":
// tab goes down in context menu, shift + tab goes up in context menu
// if we're on the last item, one more tab will close the context menu
// similarly, if we're on the first item, one more shift + tab will close it
if (
(event.shiftKey && option.first) ||
(!event.shiftKey && option.last)
) {
this.props.hideContext();
}
break;
case "ArrowUp":
case "ArrowDown":
event.preventDefault();
this.focusSibling(event.target, event.key);
break;
case "Enter":
case " ":
event.preventDefault();
this.props.hideContext();
option.onClick();
break;
case "Escape":
this.props.hideContext();
break;
}
}
// Prevents the default behavior of spacebar
// scrolling the page & auto-triggering buttons.
onKeyUp(event) {
if (event.key === " ") {
event.preventDefault();
}
}
render() {
const { option } = this.props;
return (
<li role="presentation" className="context-menu-item">
<button
className={option.disabled ? "disabled" : ""}
role="menuitem"
onClick={this.onClick}
onKeyDown={this.onKeyDown}
onKeyUp={this.onKeyUp}
ref={option.first ? this.focusFirst : null}
aria-haspopup={
option.id === "newtab-menu-edit-topsites" ? "dialog" : null
}
>
<span data-l10n-id={option.string_id || option.id} />
</button>
</li>
);
}
}
export const ContextMenuItem = connect(state => ({
Prefs: state.Prefs,
}))(_ContextMenuItem);
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