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import React, { forwardRef } from 'react';
import LoadingOutlined from '@ant-design/icons/LoadingOutlined';
import classNames from 'classnames';
import CSSMotion from 'rc-motion';
import IconWrapper from './IconWrapper';
type InnerLoadingIconProps = {
prefixCls: string;
className?: string;
style?: React.CSSProperties;
iconClassName?: string;
};
const InnerLoadingIcon = forwardRef<HTMLSpanElement, InnerLoadingIconProps>((props, ref) => {
const { prefixCls, className, style, iconClassName } = props;
const mergedIconCls = classNames(`${prefixCls}-loading-icon`, className);
return (
<IconWrapper prefixCls={prefixCls} className={mergedIconCls} style={style} ref={ref}>
<LoadingOutlined className={iconClassName} />
</IconWrapper>
);
});
export type DefaultLoadingIconProps = {
prefixCls: string;
existIcon: boolean;
loading?: boolean | object;
className?: string;
style?: React.CSSProperties;
mount: boolean;
};
const getCollapsedWidth = (): React.CSSProperties => ({
width: 0,
opacity: 0,
transform: 'scale(0)',
});
const getRealWidth = (node: HTMLElement): React.CSSProperties => ({
width: node.scrollWidth,
opacity: 1,
transform: 'scale(1)',
});
const DefaultLoadingIcon: React.FC<DefaultLoadingIconProps> = (props) => {
const { prefixCls, loading, existIcon, className, style, mount } = props;
const visible = !!loading;
if (existIcon) {
return <InnerLoadingIcon prefixCls={prefixCls} className={className} style={style} />;
}
return (
<CSSMotion
visible={visible}
// Used for minus flex gap style only
motionName={`${prefixCls}-loading-icon-motion`}
motionAppear={!mount}
motionEnter={!mount}
motionLeave={!mount}
removeOnLeave
onAppearStart={getCollapsedWidth}
onAppearActive={getRealWidth}
onEnterStart={getCollapsedWidth}
onEnterActive={getRealWidth}
onLeaveStart={getRealWidth}
onLeaveActive={getCollapsedWidth}
>
{({ className: motionCls, style: motionStyle }, ref: React.Ref<HTMLSpanElement>) => {
const mergedStyle = { ...style, ...motionStyle };
return (
<InnerLoadingIcon
prefixCls={prefixCls}
className={classNames(className, motionCls)}
style={mergedStyle}
ref={ref}
/>
);
}}
</CSSMotion>
);
};
export default DefaultLoadingIcon;
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