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index.js
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index.js
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/**
* External dependencies
*/
import classnames from 'classnames';
import { isArray } from 'lodash';
/**
* WordPress dependencies
*/
import deprecated from '@wordpress/deprecated';
import { forwardRef } from '@wordpress/element';
/**
* Internal dependencies
*/
import Tooltip from '../tooltip';
import Icon from '../icon';
const disabledEventsOnDisabledButton = [ 'onMouseDown', 'onClick' ];
export function Button( props, ref ) {
const {
href,
target,
isPrimary,
isSmall,
isTertiary,
isPressed,
isBusy,
isDefault,
isSecondary,
isLink,
isDestructive,
className,
disabled,
icon,
iconSize,
showTooltip,
tooltipPosition,
shortcut,
label,
children,
__experimentalIsFocusable: isFocusable,
...additionalProps
} = props;
if ( isDefault ) {
deprecated( 'Button isDefault prop', {
alternative: 'isSecondary',
} );
}
const classes = classnames( 'components-button', className, {
'is-secondary': isDefault || isSecondary,
'is-primary': isPrimary,
'is-small': isSmall,
'is-tertiary': isTertiary,
'is-pressed': isPressed,
'is-busy': isBusy,
'is-link': isLink,
'is-destructive': isDestructive,
'has-text': !! icon && !! children,
'has-icon': !! icon,
} );
const trulyDisabled = disabled && ! isFocusable;
const Tag = href !== undefined && ! trulyDisabled ? 'a' : 'button';
const tagProps =
Tag === 'a'
? { href, target }
: {
type: 'button',
disabled: trulyDisabled,
'aria-pressed': isPressed,
};
if ( disabled && isFocusable ) {
// In this case, the button will be disabled, but still focusable and
// perceivable by screen reader users.
tagProps[ 'aria-disabled' ] = true;
for ( const disabledEvent of disabledEventsOnDisabledButton ) {
additionalProps[ disabledEvent ] = ( event ) => {
event.stopPropagation();
event.preventDefault();
};
}
}
// Should show the tooltip if...
const shouldShowTooltip =
! trulyDisabled &&
// an explicit tooltip is passed or...
( ( showTooltip && label ) ||
// there's a shortcut or...
shortcut ||
// there's a label and...
( !! label &&
// the children are empty and...
( ! children ||
( isArray( children ) && ! children.length ) ) &&
// the tooltip is not explicitly disabled.
false !== showTooltip ) );
const element = (
<Tag
{ ...tagProps }
{ ...additionalProps }
className={ classes }
aria-label={ additionalProps[ 'aria-label' ] || label }
ref={ ref }
>
{ icon && <Icon icon={ icon } size={ iconSize } /> }
{ children }
</Tag>
);
if ( ! shouldShowTooltip ) {
return element;
}
return (
<Tooltip
text={ label }
shortcut={ shortcut }
position={ tooltipPosition }
>
{ element }
</Tooltip>
);
}
export default forwardRef( Button );