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import PropTypes from 'prop-types';
import { cloneElement, Component } from 'react';
class HoverIntent extends Component {
constructor() {
super();
this.x = 0;
this.y = 0;
this.pX = 0;
this.pY = 0;
this.status = 0;
this.timer = 0;
}
componentDidMount() {
this.element.addEventListener( 'mouseover', this.dispatchOver, false );
this.element.addEventListener( 'mouseout', this.dispatchOut, false );
}
componentWillUnmount() {
this.element.removeEventListener( 'mouseover', this.dispatchOver, false );
this.element.removeEventListener( 'mouseout', this.dispatchOut, false );
}
delay = ( e ) => {
if ( this.timer ) {
this.timer = clearTimeout( this.timer );
}
this.status = 0;
return this.props.onMouseOut.call( this.element, e );
};
tracker = ( e ) => {
this.x = e.clientX;
this.y = e.clientY;
};
compare = ( e ) => {
if ( this.timer ) {
this.timer = clearTimeout( this.timer );
}
if ( Math.abs( this.pX - this.x ) + Math.abs( this.pY - this.y ) < this.props.sensitivity ) {
this.status = 1;
return this.props.onMouseOver.call( this.element, e );
}
this.pX = this.x;
this.pY = this.y;
this.timer = setTimeout( () => this.compare( this.element, e ), this.props.interval );
};
dispatchOver = ( e ) => {
if ( this.timer ) {
this.timer = clearTimeout( this.timer );
}
this.element.removeEventListener( 'mousemove', this.tracker, false );
if ( this.status !== 1 ) {
this.pX = e.clientX;
this.pY = e.clientY;
this.element.addEventListener( 'mousemove', this.tracker, false );
this.timer = setTimeout( () => this.compare( this.element, e ), this.props.interval );
}
};
dispatchOut = ( e ) => {
if ( this.timer ) {
this.timer = clearTimeout( this.timer );
}
this.element.removeEventListener( 'mousemove', this.tracker, false );
if ( this.status === 1 ) {
this.timer = setTimeout( () => this.delay( this.element, e ), this.props.timeout );
}
};
render() {
return cloneElement( this.props.children, {
ref: ( element ) => {
this.element = element;
},
} );
}
}
HoverIntent.defaultProps = {
sensitivity: 7,
interval: 100,
timeout: 0,
};
HoverIntent.propTypes = {
sensitivity: PropTypes.number,
interval: PropTypes.number,
timeout: PropTypes.number,
onMouseOver: PropTypes.func,
onMouseOut: PropTypes.func,
children: PropTypes.node,
};
export default HoverIntent;
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