google-maps-drawing-tools/dist/modules/src/tools/polygon.js

Unified drawing tools for Google Maps

import Tool, { ToolId } from '../tool';
export default class PolygonTool extends Tool {
    constructor(options) {
        super(options);
        this.id = ToolId.Polygon;
        this.data = options.data;
        // private
        this.dataId = 'Polygon';
        this.dataStyle = options.style || {
            strokeColor: '#374046',
            fillColor: '#374046',
            fillOpacity: 0.5,
            strokeWeight: 2,
            clickable: false
        };
    }
    activate() {
        let shape = super.activate();
        this.data.setDrawingMode(this.dataId);
        this.data.setStyle(this.dataStyle);
        this.setupListeners();
        return shape;
    }
    deactivate() {
        super.deactivate();
        this.data.setDrawingMode(null);
        this.cleanupListeners();
    }
    setupListeners() {
        let listener = this.data.addListener('addfeature', ({ feature }) => {
            this.feature = feature;
            this.deactivate();
        });
        this.feature = undefined;
        this.dataListener = listener;
    }
    cleanupListeners() {
        if (this.dataListener) {
            google.maps.event.removeListener(this.dataListener);
        }
    }
}
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