@mapbox/react-map-gl/dist/es6/components/navigation-control.js

A React wrapper for MapboxGL-js and overlay API.

import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";
import { createElement } from 'react';
import PropTypes from 'prop-types';
import BaseControl from './base-control';
import MapState from '../utils/map-state';
import { LINEAR_TRANSITION_PROPS } from '../utils/map-controller';
import deprecateWarn from '../utils/deprecate-warn';
const propTypes = Object.assign({}, BaseControl.propTypes, {
  // Custom className
  className: PropTypes.string,
  // Callbacks fired when the user interacted with the map. The object passed to the callbacks
  // contains viewport properties such as `longitude`, `latitude`, `zoom` etc.
  onViewStateChange: PropTypes.func,
  onViewportChange: PropTypes.func,
  // Show/hide compass button
  showCompass: PropTypes.bool,
  // Show/hide zoom buttons
  showZoom: PropTypes.bool
});
const defaultProps = Object.assign({}, BaseControl.defaultProps, {
  className: '',
  onViewStateChange: () => {},
  onViewportChange: () => {},
  showCompass: true,
  showZoom: true
});
/*
 * PureComponent doesn't update when context changes, so
 * implementing our own shouldComponentUpdate here.
 */

export default class NavigationControl extends BaseControl {
  constructor(props) {
    super(props); // Check for deprecated props

    _defineProperty(this, "_onZoomIn", () => {
      this._updateViewport({
        zoom: this._context.viewport.zoom + 1
      });
    });

    _defineProperty(this, "_onZoomOut", () => {
      this._updateViewport({
        zoom: this._context.viewport.zoom - 1
      });
    });

    _defineProperty(this, "_onResetNorth", () => {
      this._updateViewport({
        bearing: 0,
        pitch: 0
      });
    });

    deprecateWarn(props);
  }

  _updateViewport(opts) {
    const viewport = this._context.viewport;
    const mapState = new MapState(Object.assign({}, viewport, opts));
    const viewState = Object.assign({}, mapState.getViewportProps(), LINEAR_TRANSITION_PROPS); // Call new style callback

    this.props.onViewStateChange({
      viewState
    }); // Call old style callback

    this.props.onViewportChange(viewState);
  }

  _renderCompass() {
    const bearing = this._context.viewport.bearing;
    return createElement('span', {
      className: 'mapboxgl-ctrl-compass-arrow',
      style: {
        transform: "rotate(".concat(-bearing, "deg)")
      }
    });
  }

  _renderButton(type, label, callback, children) {
    return createElement('button', {
      key: type,
      className: "mapboxgl-ctrl-icon mapboxgl-ctrl-".concat(type),
      type: 'button',
      title: label,
      onClick: callback,
      children
    });
  }

  _render() {
    const _this$props = this.props,
          className = _this$props.className,
          showCompass = _this$props.showCompass,
          showZoom = _this$props.showZoom;
    return createElement('div', {
      className: "mapboxgl-ctrl mapboxgl-ctrl-group ".concat(className),
      ref: this._containerRef
    }, [showZoom && this._renderButton('zoom-in', 'Zoom In', this._onZoomIn), showZoom && this._renderButton('zoom-out', 'Zoom Out', this._onZoomOut), showCompass && this._renderButton('compass', 'Reset North', this._onResetNorth, this._renderCompass())]);
  }

}

_defineProperty(NavigationControl, "propTypes", propTypes);

_defineProperty(NavigationControl, "defaultProps", defaultProps);
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