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import React, { cloneElement } from 'react';
import RcTooltip from 'rc-tooltip';
import getPlacements from '../popover/placements';
const placements = getPlacements({
verticalArrowShift: 8,
});
export default class Tooltip extends React.Component {
static defaultProps = {
prefixCls: 'ant-tooltip',
placement: 'top',
transitionName: 'zoom-big',
mouseEnterDelay: 0.1,
mouseLeaveDelay: 0.1,
onVisibleChange() {},
}
constructor(props) {
super(props);
this.state = {
visible: false,
};
}
onVisibleChange = (visible) => {
this.setState({ visible });
this.props.onVisibleChange(visible);
}
getPopupDomNode() {
return this.refs.tooltip.getPopupDomNode();
}
// 动态设置动画点
onPopupAlign = (domNode, align) => {
// 当前返回的位置
const placement = Object.keys(placements).filter(
key => (
placements[key].points[0] === align.points[0] &&
placements[key].points[1] === align.points[1]
)
)[0];
if (!placement) {
return;
}
// 根据当前坐标设置动画点
const rect = domNode.getBoundingClientRect();
const transformOrigin = {
top: '50%',
left: '50%',
};
if (placement.indexOf('top') >= 0 || placement.indexOf('Bottom') >= 0) {
transformOrigin.top = `${rect.height - align.offset[1]}px`;
} else if (placement.indexOf('Top') >= 0 || placement.indexOf('bottom') >= 0) {
transformOrigin.top = `${-align.offset[1]}px`;
}
if (placement.indexOf('left') >= 0 || placement.indexOf('Right') >= 0) {
transformOrigin.left = `${rect.width - align.offset[0]}px`;
} else if (placement.indexOf('right') >= 0 || placement.indexOf('Left') >= 0) {
transformOrigin.left = `${-align.offset[0]}px`;
}
domNode.style.transformOrigin = `${transformOrigin.left} ${transformOrigin.top}`;
}
render() {
const { prefixCls, title, overlay, children, transitionName } = this.props;
// Hide tooltip when there is no title
let visible = this.state.visible;
if (!title && !overlay) {
visible = false;
}
if ('visible' in this.props) {
visible = this.props.visible;
}
const openClassName = this.props.openClassName || `${prefixCls}-open`;
const childrenCls = (children && children.props && children.props.className)
? `${children.props.className} ${openClassName}` : openClassName;
return (
<RcTooltip
transitionName={transitionName}
builtinPlacements={placements}
overlay={title}
visible={visible}
onPopupAlign={this.onPopupAlign}
ref="tooltip"
{...this.props}
onVisibleChange={this.onVisibleChange}
>
{visible ? cloneElement(children, { className: childrenCls }) : children}
</RcTooltip>
);
}
}