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// Package imports.
import classNames from 'classnames';
import PropTypes from 'prop-types';
import React from 'react';
import Overlay from 'react-overlays/lib/Overlay';
// Components.
import IconButton from 'flavours/glitch/components/icon_button';
import DropdownMenu from './dropdown_menu';
// Utils.
import { isUserTouching } from 'flavours/glitch/util/is_mobile';
import { assignHandlers } from 'flavours/glitch/util/react_helpers';
// The component.
export default class ComposerOptionsDropdown extends React.PureComponent {
static propTypes = {
active: PropTypes.bool,
disabled: PropTypes.bool,
icon: PropTypes.string,
items: PropTypes.arrayOf(PropTypes.shape({
icon: PropTypes.string,
meta: PropTypes.node,
name: PropTypes.string.isRequired,
on: PropTypes.bool,
text: PropTypes.node,
})).isRequired,
onModalOpen: PropTypes.func,
onModalClose: PropTypes.func,
title: PropTypes.string,
value: PropTypes.string,
onChange: PropTypes.func,
};
state = {
needsModalUpdate: false,
open: false,
openedViaKeyboard: undefined,
placement: 'bottom',
};
// Toggles opening and closing the dropdown.
handleToggle = ({ target, type }) => {
const { onModalOpen } = this.props;
const { open } = this.state;
if (isUserTouching()) {
if (this.state.open) {
this.props.onModalClose();
} else {
const modal = this.handleMakeModal();
if (modal && onModalOpen) {
onModalOpen(modal);
}
}
} else {
const { top } = target.getBoundingClientRect();
if (this.state.open && this.activeElement) {
this.activeElement.focus({ preventScroll: true });
}
this.setState({ placement: top * 2 < innerHeight ? 'bottom' : 'top' });
this.setState({ open: !this.state.open, openedViaKeyboard: type !== 'click' });
}
}
handleKeyDown = (e) => {
switch (e.key) {
case 'Escape':
this.handleClose();
break;
}
}
handleMouseDown = () => {
if (!this.state.open) {
this.activeElement = document.activeElement;
}
}
handleButtonKeyDown = (e) => {
switch(e.key) {
case ' ':
case 'Enter':
this.handleMouseDown();
break;
}
}
handleKeyPress = (e) => {
switch(e.key) {
case ' ':
case 'Enter':
this.handleToggle(e);
e.stopPropagation();
e.preventDefault();
break;
}
}
handleClose = () => {
if (this.state.open && this.activeElement) {
this.activeElement.focus({ preventScroll: true });
}
this.setState({ open: false });
}
// Creates an action modal object.
handleMakeModal = () => {
const component = this;
const {
items,
onChange,
onModalOpen,
onModalClose,
value,
} = this.props;
// Required props.
if (!(onChange && onModalOpen && onModalClose && items)) {
return null;
}
// The object.
return {
actions: items.map(
({
name,
...rest
}) => ({
...rest,
active: value && name === value,
name,
onClick (e) {
e.preventDefault(); // Prevents focus from changing
onModalClose();
onChange(name);
},
onPassiveClick (e) {
e.preventDefault(); // Prevents focus from changing
onChange(name);
component.setState({ needsModalUpdate: true });
},
})
),
};
}
// If our modal is open and our props update, we need to also update
// the modal.
handleUpdate = () => {
const { onModalOpen } = this.props;
const { needsModalUpdate } = this.state;
// Gets our modal object.
const modal = this.handleMakeModal();
// Reopens the modal with the new object.
if (needsModalUpdate && modal && onModalOpen) {
onModalOpen(modal);
}
}
// Updates our modal as necessary.
componentDidUpdate (prevProps) {
const { items } = this.props;
const { needsModalUpdate } = this.state;
if (needsModalUpdate && items.find(
(item, i) => item.on !== prevProps.items[i].on
)) {
this.handleUpdate();
this.setState({ needsModalUpdate: false });
}
}
// Rendering.
render () {
const {
active,
disabled,
title,
icon,
items,
onChange,
value,
} = this.props;
const { open, placement } = this.state;
const computedClass = classNames('composer--options--dropdown', {
active,
open,
top: placement === 'top',
});
// The result.
return (
<div
className={computedClass}
onKeyDown={this.handleKeyDown}
>
<IconButton
active={open || active}
className='value'
disabled={disabled}
icon={icon}
inverted
onClick={this.handleToggle}
onMouseDown={this.handleMouseDown}
onKeyDown={this.handleButtonKeyDown}
onKeyPress={this.handleKeyPress}
size={18}
style={{
height: null,
lineHeight: '27px',
}}
title={title}
/>
<Overlay
containerPadding={20}
placement={placement}
show={open}
target={this}
>
<DropdownMenu
items={items}
onChange={onChange}
onClose={this.handleClose}
value={value}
openedViaKeyboard={this.state.openedViaKeyboard}
/>
</Overlay>
</div>
);
}
}
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