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import React from 'react';
import classNames from 'classnames';
import { AnimatedNumber } from './animated_number';
import { Icon } from './icon';
interface Props {
className?: string;
title: string;
icon: string;
onClick?: React.MouseEventHandler<HTMLButtonElement>;
onMouseDown?: React.MouseEventHandler<HTMLButtonElement>;
onKeyDown?: React.KeyboardEventHandler<HTMLButtonElement>;
onKeyPress?: React.KeyboardEventHandler<HTMLButtonElement>;
size: number;
active: boolean;
expanded?: boolean;
style?: React.CSSProperties;
activeStyle?: React.CSSProperties;
disabled: boolean;
inverted?: boolean;
animate: boolean;
overlay: boolean;
tabIndex: number;
counter?: number;
obfuscateCount?: boolean;
href?: string;
ariaHidden: boolean;
}
interface States {
activate: boolean;
deactivate: boolean;
}
export class IconButton extends React.PureComponent<Props, States> {
static defaultProps = {
size: 18,
active: false,
disabled: false,
animate: false,
overlay: false,
tabIndex: 0,
ariaHidden: false,
};
state = {
activate: false,
deactivate: false,
};
UNSAFE_componentWillReceiveProps(nextProps: Props) {
if (!nextProps.animate) return;
if (this.props.active && !nextProps.active) {
this.setState({ activate: false, deactivate: true });
} else if (!this.props.active && nextProps.active) {
this.setState({ activate: true, deactivate: false });
}
}
handleClick: React.MouseEventHandler<HTMLButtonElement> = (e) => {
e.preventDefault();
if (!this.props.disabled && this.props.onClick != null) {
this.props.onClick(e);
}
};
handleKeyPress: React.KeyboardEventHandler<HTMLButtonElement> = (e) => {
if (this.props.onKeyPress && !this.props.disabled) {
this.props.onKeyPress(e);
}
};
handleMouseDown: React.MouseEventHandler<HTMLButtonElement> = (e) => {
if (!this.props.disabled && this.props.onMouseDown) {
this.props.onMouseDown(e);
}
};
handleKeyDown: React.KeyboardEventHandler<HTMLButtonElement> = (e) => {
if (!this.props.disabled && this.props.onKeyDown) {
this.props.onKeyDown(e);
}
};
render() {
const style = {
fontSize: `${this.props.size}px`,
width: `${this.props.size * 1.28571429}px`,
height: `${this.props.size * 1.28571429}px`,
lineHeight: `${this.props.size}px`,
...this.props.style,
...(this.props.active ? this.props.activeStyle : {}),
};
const {
active,
className,
disabled,
expanded,
icon,
inverted,
overlay,
tabIndex,
title,
counter,
obfuscateCount,
href,
ariaHidden,
} = this.props;
const { activate, deactivate } = this.state;
const classes = classNames(className, 'icon-button', {
active,
disabled,
inverted,
activate,
deactivate,
overlayed: overlay,
'icon-button--with-counter': typeof counter !== 'undefined',
});
if (typeof counter !== 'undefined') {
style.width = 'auto';
}
let contents = (
<React.Fragment>
<Icon id={icon} fixedWidth aria-hidden='true' />{' '}
{typeof counter !== 'undefined' && (
<span className='icon-button__counter'>
<AnimatedNumber value={counter} obfuscate={obfuscateCount} />
</span>
)}
</React.Fragment>
);
if (href != null) {
contents = (
<a href={href} target='_blank' rel='noopener noreferrer'>
{contents}
</a>
);
}
return (
<button
type='button'
aria-label={title}
aria-expanded={expanded}
aria-hidden={ariaHidden}
title={title}
className={classes}
onClick={this.handleClick}
onMouseDown={this.handleMouseDown}
onKeyDown={this.handleKeyDown}
onKeyPress={this.handleKeyPress}
style={style}
tabIndex={tabIndex}
disabled={disabled}
>
{contents}
</button>
);
}
}