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| import React from 'react';
import PropTypes from 'prop-types';
class ButtonGroup extends React.Component {
static displayName = 'ButtonGroup';
static childContextTypes = {
handleClick: PropTypes.func,
handleKeyDown: PropTypes.func,
focusIndex: PropTypes.number,
focusOnLoad: PropTypes.bool,
};
state = {
activeIndex: this.props.activeIndex,
focusIndex: 0,
};
getChildContext = () => {
return {
handleClick: (event, index) => this.handleClick(event, index),
handleKeyDown: (event, index) => this.handleKeyDown(event, index),
focusIndex: this.state.focusIndex,
focusOnLoad: this.props.focusOnLoad,
};
};
componentWillMount () {
if(!this.verifyChildren()) {
throw new Error('ButtonGroup should only contain Buttons as children.');
}
}
componentDidMount() {
const { focusIndex, activeIndex } = this.state;
const initialFocus = this.getNewIndex(focusIndex - 1 , 1);
this.setFocusIndex(initialFocus);
(activeIndex !== null) && this.determineInitialActive();
}
verifyChildren = () => {
const { children } = this.props;
const status = React.Children.toArray(children).reduce((status, child) => {
return status && child.type.displayName === 'Button';
}, true);
return status;
};
determineInitialActive = () => {
/* eslint-disable no-console */
const { activeIndex, children } = this.state;
Iif(activeIndex < 0 && activeIndex > children.length - 1) {
console.warn('[@collab-ui/react] ButtonGroup: activeIndex is out of bound');
return;
}
const initialActive = this.getNewIndex(activeIndex - 1 , 1);
this.setActiveIndex(initialActive);
/* eslint-enable no-console */
};
setFocusIndex = index => {
const { focusIndex } = this.state;
return (
focusIndex !== index
&& this.setState({ focusIndex: index })
);
};
setActiveIndex = index => {
const { activeIndex } = this.state;
return (
activeIndex !== index
&& this.setState({ activeIndex: index })
);
};
handleClick = (event, index) => {
const { onSelect } = this.props;
this.setFocusIndex(index);
this.setActiveIndex(index);
onSelect && onSelect(event, index);
};
getNewIndex = (currentIndex, change) => {
const { children } = this.props;
const length = children.length - 1;
const getPossibleIndex = () => {
if (currentIndex + change < 0) {
return length;
} else Iif (currentIndex + change > length) {
return 0;
}
return currentIndex + change;
};
const possibleIndex = getPossibleIndex();
const potentialTarget = React.Children.toArray(children)[possibleIndex];
return potentialTarget.props.disabled
? this.getNewIndex(possibleIndex, change)
: possibleIndex;
};
getIncludesFirstCharacter = (str, char) =>
str
.charAt(0)
.toLowerCase()
.includes(char);
setFocusByFirstCharacter = (char, currentIdx) => {
const { children } = this.props;
const length = children.length - 1;
const newIndex = React.Children
.toArray(children)
.reduce((agg, child, idx, arr) => {
const index = currentIdx + idx + 1 > length
? Math.abs(currentIdx + idx - length)
: currentIdx + idx + 1;
const label = typeof arr[index].props.children === 'string'
? arr[index].props.children
: '';
return (
!agg.length
&& !arr[index].props.disabled
&& !arr[index].props.isReadOnly
&& this.getIncludesFirstCharacter(label, char)
)
? agg.concat(index)
: agg;
},
[]
);
!isNaN(newIndex[0]) && this.setFocusIndex(newIndex[0]);
};
handleKeyDown = (e, idx) => {
let newIndex;
let flag = false;
const char = e.key;
const isPrintableCharacter = str => {
return str.length === 1 && str.match(/\S/);
};
switch (e.which) {
case 38:
case 37:
newIndex = this.getNewIndex(idx, -1);
this.setFocusIndex(newIndex);
flag = true;
break;
case 39:
case 40:
newIndex = this.getNewIndex(idx, 1);
this.setFocusIndex(newIndex);
flag = true;
break;
default:
Eif (isPrintableCharacter(char)) {
this.setFocusByFirstCharacter(char, idx);
flag = true;
}
break;
}
Eif (flag) {
e.stopPropagation();
e.preventDefault();
}
};
render() {
const {
ariaLabel,
children,
className,
highlightSelected,
justified,
pillWidth,
theme,
type,
} = this.props;
const { activeIndex } = this.state;
const setButtons = () =>
React.Children.map(children, (child, idx) => {
return React.cloneElement(child, {
active: type === 'pill' ? false : highlightSelected && activeIndex === idx,
index: idx,
className: child.props.children.type && child.props.children.type.displayName === 'Icon'
? 'cui-button--icon-group'
: '',
style: {
...pillWidth && {width: pillWidth},
}
});
});
return (
<div
className={
'cui-button-group' +
`${(theme && ` cui-button-group--${theme}`) || ''}` +
`${(justified && ` cui-button-group--justified`) || ''}` +
`${(type && ` cui-button-group--${type}` || '')}` +
`${(className && ` ${className}`) || ''}`
}
role="group"
aria-label={ariaLabel}
>
{setButtons()}
</div>
);
}
}
ButtonGroup.propTypes = {
/** @prop Sets initial active Button by index | null */
activeIndex: PropTypes.number,
/** @prop Text to display for blindness accessibility features | '' */
ariaLabel: PropTypes.string,
/** @prop Children nodes to render inside ButtonGroup | null */
children: PropTypes.node,
/** @prop Optional css class string | '' */
className: PropTypes.string,
/** @prop Set focus to ButtonGroup when page is loaded | false */
focusOnLoad: PropTypes.bool,
/** @prop Highlights the selected button within group | true */
highlightSelected: PropTypes.bool,
/** @prop Optional text-justified css styling | true */
justified: PropTypes.bool,
/** @prop Handler to be called when the user selects ButtonGroup | null */
onSelect: PropTypes.func,
/** @prop Sets width of a pill Button | '60px' */
pillWidth: PropTypes.string,
/** @prop Optional Button color theme for ButtonGroup | '' */
theme: PropTypes.oneOf(['', 'dark']),
/** @prop Optional Button type for ButtonGroup | '' */
type: PropTypes.oneOf(['', 'pill']),
};
ButtonGroup.defaultProps = {
activeIndex: null,
ariaLabel: '',
children: null,
className: '',
focusOnLoad: false,
highlightSelected: true,
justified: true,
onSelect: null,
pillWidth: '60px',
theme: '',
type:'',
};
export default ButtonGroup;
/**
* @component button-group
* @section default
* @react
*
import { Button, ButtonGroup } from '@collab-ui/react';
export default class ButtonGroupDefault extends React.PureComponent {
render() {
return(
<ButtonGroup>
<Button ariaLabel='1'>one</Button>
<Button ariaLabel='2' disabled>two</Button>
<Button ariaLabel='3'>three</Button>
</ButtonGroup>
);
}
}
**/
/**
* @component button-group
* @section justified-false
* @react
*
import { Button, ButtonGroup } from '@collab-ui/react';
export default class ButtonGroupJustifiedFalse extends React.PureComponent {
render() {
return(
<ButtonGroup justified={false}>
<Button ariaLabel='1'>one</Button>
<Button ariaLabel='2' disabled>two</Button>
<Button ariaLabel='3'>three</Button>
</ButtonGroup>
);
}
}
**/
/**
* @component button-group
* @section pill
* @react
*
import { Button, ButtonGroup, Icon } from '@collab-ui/react';
export default class ButtonGroupPill extends React.PureComponent {
render() {
return(
<div>
<div className='columns small-4'>
<ButtonGroup>
<Button ariaLabel='left'><Icon name='icon-arrow-left_12' /></Button>
<Button ariaLabel='right'><Icon name='icon-arrow-right_12' /></Button>
</ButtonGroup>
</div>
<div className='columns small-4'>
<ButtonGroup type='pill'>
<Button ariaLabel='left'><Icon name='icon-flag_16' /></Button>
<Button ariaLabel='right'><Icon name='icon-cancel_16' /></Button>
</ButtonGroup>
</div>
<div className='columns small-4'>
<ButtonGroup type='pill' pillWidth='60px'>
<Button ariaLabel='left'><Icon name='icon-flag_16' /></Button>
</ButtonGroup>
</div>
</div>
);
}
}
**/
/**
* @component button-group
* @section highlight-false
* @react
*
import { Button, ButtonGroup, Icon } from '@collab-ui/react';
export default class ButtonGroupHiglightFalse extends React.PureComponent {
render() {
return(
<ButtonGroup justified={false} highlightSelected={false}>
<Button ariaLabel='Left'><Icon name='icon-arrow-left_12' /></Button>
<Button ariaLabel='Today'>Today</Button>
<Button ariaLabel='Right'><Icon name='icon-arrow-right_12' /></Button>
</ButtonGroup>
);
}
}
**/
|