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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';
// Handlers.
const handlers = {
// Closes the dropdown.
handleClose () {
this.setState({ open: false });
},
// The enter key toggles the dropdown's open state, and the escape
// key closes it.
handleKeyDown ({ key }) {
const {
handleClose,
handleToggle,
} = this.handlers;
switch (key) {
case 'Enter':
handleToggle(key);
break;
case 'Escape':
handleClose();
break;
}
},
// 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 });
},
})
),
};
},
// Toggles opening and closing the dropdown.
handleToggle ({ target }) {
const { handleMakeModal } = this.handlers;
const { onModalOpen } = this.props;
const { open } = this.state;
// If this is a touch device, we open a modal instead of the
// dropdown.
if (isUserTouching()) {
// This gets the modal to open.
const modal = handleMakeModal();
// If we can, we then open the modal.
if (modal && onModalOpen) {
onModalOpen(modal);
return;
}
}
const { top } = target.getBoundingClientRect();
this.setState({ placement: top * 2 < innerHeight ? 'bottom' : 'top' });
// Otherwise, we just set our state to open.
this.setState({ open: !open });
},
// If our modal is open and our props update, we need to also update
// the modal.
handleUpdate () {
const { handleMakeModal } = this.handlers;
const { onModalOpen } = this.props;
const { needsModalUpdate } = this.state;
// Gets our modal object.
const modal = handleMakeModal();
// Reopens the modal with the new object.
if (needsModalUpdate && modal && onModalOpen) {
onModalOpen(modal);
}
},
};
// The component.
export default class ComposerOptionsDropdown extends React.PureComponent {
// Constructor.
constructor (props) {
super(props);
assignHandlers(this, handlers);
this.state = {
needsModalUpdate: false,
open: false,
placement: 'bottom',
};
}
// Updates our modal as necessary.
componentDidUpdate (prevProps) {
const { handleUpdate } = this.handlers;
const { items } = this.props;
const { needsModalUpdate } = this.state;
if (needsModalUpdate && items.find(
(item, i) => item.on !== prevProps.items[i].on
)) {
handleUpdate();
this.setState({ needsModalUpdate: false });
}
}
// Rendering.
render () {
const {
handleClose,
handleKeyDown,
handleToggle,
} = this.handlers;
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={handleKeyDown}
>
<IconButton
active={open || active}
className='value'
disabled={disabled}
icon={icon}
onClick={handleToggle}
size={18}
style={{
height: null,
lineHeight: '27px',
}}
title={title}
/>
<Overlay
containerPadding={20}
placement={placement}
show={open}
target={this}
>
<DropdownMenu
items={items}
onChange={onChange}
onClose={handleClose}
value={value}
/>
</Overlay>
</div>
);
}
}
// Props.
ComposerOptionsDropdown.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,
onChange: PropTypes.func,
onModalClose: PropTypes.func,
onModalOpen: PropTypes.func,
title: PropTypes.string,
value: PropTypes.string,
};