dynamic-crosshair.js

// Copyright (c) 2016 - 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

import React from 'react';

import {
  XYPlot,
  XAxis,
  YAxis,
  VerticalGridLines,
  HorizontalGridLines,
  LineSeries,
  Crosshair
} from 'index';

const DATA = [
  [{x: 1, y: 10}, {x: 2, y: 7}, {x: 3, y: 15}],
  [{x: 1, y: 20}, {x: 2, y: 5}, {x: 3, y: 15}]
];

export default class DynamicCrosshair extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      crosshairValues: []
    };
  }

  /**
   * Event handler for onMouseLeave.
   * @private
   */
  _onMouseLeave = () => {
    this.setState({crosshairValues: []});
  };

  /**
   * Event handler for onNearestX.
   * @param {Object} value Selected value.
   * @param {index} index Index of the value in the data array.
   * @private
   */
  _onNearestX = (value, {index}) => {
    this.setState({crosshairValues: DATA.map(d => d[index])});
  };

  render() {
    return (
      <XYPlot onMouseLeave={this._onMouseLeave} width={300} height={300}>
        <VerticalGridLines />
        <HorizontalGridLines />
        <XAxis />
        <YAxis />
        <LineSeries onNearestX={this._onNearestX} data={DATA[0]} />
        <LineSeries data={DATA[1]} />
        <Crosshair
          values={this.state.crosshairValues}
          className={'test-class-name'}
        />
      </XYPlot>
    );
  }
}