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| import _ from 'lodash';
import React from 'react';
import { bindClassNames } from '../../util/style-helpers';
import { createClass, findTypes, omitProps } from '../../util/component-types';
import * as reducers from './VerticalListMenu.reducers';
import ChevronIcon from '../Icon/ChevronIcon/ChevronIcon';
import Collapsible from '../Collapsible/Collapsible';
const cx = bindClassNames('lucid-VerticalListMenu');
const {
func,
arrayOf,
bool,
string,
number,
node,
object,
} = React.PropTypes;
/**
* {"categories": ["navigation"], "madeFrom": ["ChevronIcon"]}
*
* Used primarily for navigation lists. It supports nesting `VerticalListMenu`s
* below `VerticalListMenu.Item`s and animating expanding of those sub lists.
* The default reducer behavior is for only one `VerticalListMenu.Item` to be
* selected at any given time; that is easily overridden by handling `onSelect`
* yourself.
*/
const VerticalListMenu = createClass({
displayName: 'VerticalListMenu',
reducers,
components: {
/**
* A child item that can contain content or another VerticalListMenu.
*/
Item: createClass({
displayName: 'VerticalListMenu.Item',
propTypes: {
/**
* Show or hide the expand button. Should be `true` if you want to nest
* menus.
*/
hasExpander: bool,
/**
* Determines the visibility of nested menus.
*/
isExpanded: bool,
/**
* If `true` then a small bar on the left side of the item will be
* shown indicating this item is selected.
*/
isSelected: bool,
/**
* Determines the visibility of the small bar on the left when the user
* hovers over the item. This should indicate to the user that an item
* is clickable.
*/
isActionable: bool,
/**
* Called when the user clicks the main body of the item.
*
* Signature: `(index, { event, props}) => {}`
*/
onSelect: func,
/**
* Called when the user clicks the expand button.
*
* Signature: `(index, { event, props}) => {}`
*/
onToggle: func,
},
}),
},
propTypes: {
/**
* Regular `children` aren't really used in this component, but if you do
* add them they will be placed at the end of the component. You should be
* using `VerticalListMenu.Item`s instead of regular children.
*/
children: node,
/**
* Appended to the component-specific class names set on the root element.
*/
className: string,
/**
* Passed through to the root element.
*/
style: object,
/**
* Indicates which of the `VerticalListMenu.Item` children are currently
* selected. You can also put the `isSelected` prop directly on the
* `VerticalListMenu.Item`s if you wish.
*/
selectedIndices: arrayOf(number),
/**
* Indicates which of the `VerticalListMenu.Item` children are currently
* expanded. You can also put the `isExpanded` prop directly on the
* `VerticalListMenu.Item`s if you wish.
*/
expandedIndices: arrayOf(number),
/**
* Callback fired when the user selects a `VerticalListMenu.Item`.
*
* Signature: `(index, { event, props }) => {}`
*/
onSelect: func,
/**
* Callback fired when the user expands or collapses an expandable `VerticalListMenu.Item`.
*
* Signature: `(index, { event, props }) => {}`
*/
onToggle: func,
},
getDefaultProps() {
return {
onSelect: _.noop,
onToggle: _.noop,
expandedIndices: [],
selectedIndices: [],
};
},
render() {
const {
children,
className,
style,
selectedIndices,
expandedIndices,
...passThroughs,
} = this.props;
const itemChildProps = _.map(findTypes(this.props, VerticalListMenu.Item), 'props');
return (
<ul
{...omitProps(passThroughs, VerticalListMenu)}
className={cx('&', className)}
style={style}
>
{_.map(itemChildProps, (itemChildProp, index) => {
const {
hasExpander = false,
isActionable = true,
} = itemChildProp;
const itemChildrenAsArray = React.Children.toArray(itemChildProp.children);
// Was not able to get `child.Type` to work correctly, I suspect this
// is due to the way we wrap components with createLucidComponentDefinition
const listChildren = _.filter(itemChildrenAsArray, (child) => _.get(child, 'type.displayName', '') === 'VerticalListMenu');
const otherChildren = _.filter(itemChildrenAsArray, (child) => _.get(child, 'type.displayName', '') !== 'VerticalListMenu');
// If the prop is found on the child, it should override what was
// passed in at the top level for selectedIndices and expandedIndices
const actualIsExpanded = _.has(itemChildProp, 'isExpanded')
? _.get(itemChildProp, 'isExpanded', true)
: _.includes(expandedIndices, index);
const actualIsSelected = _.has(itemChildProp, 'isSelected')
? _.get(itemChildProp, 'isSelected', false)
: _.includes(selectedIndices, index);
return (
<li
key={index}
{...itemChildProp.passThroughs}
className={cx('&-Item', itemChildProp.className)}
>
<div
className={cx('&-Item-content', {
'&-Item-content-is-selected': actualIsSelected,
'&-Item-content-is-actionable': isActionable,
})}
onClick={_.partial(this.handleClickItem, index, itemChildProp)}
>
<div className={cx('&-Item-content-text')}>
{otherChildren}
</div>
{hasExpander ?
<div
className={cx('&-Item-expander')}
onClick={_.partial(this.handleToggle, index, itemChildProp)}
>
<ChevronIcon
direction={actualIsExpanded ? 'up' : 'down'}
/>
</div>
: null}
</div>
{!_.isEmpty(listChildren) ? (
<Collapsible
className={cx('&-Item-nested-list')}
isExpanded={actualIsExpanded}
>
{listChildren}
</Collapsible>
) : null}
</li>
);
})}
{children}
</ul>
);
},
handleToggle(index, itemChildProp, event) {
const {
onToggle,
} = itemChildProp;
// Prevent the user from also selecting the current item.
event.stopPropagation();
this.props.onToggle(index, { event, props: itemChildProp });
if (onToggle) {
onToggle(index, { event, props: itemChildProp });
}
},
handleClickItem(index, itemChildProp, event) {
const {
onSelect,
} = itemChildProp;
this.props.onSelect(index, { event, props: itemChildProp });
if (onSelect) {
onSelect(index, { event, props: itemChildProp });
}
},
});
export default VerticalListMenu;
|