WME-GIS-Layers.js

/* eslint-disable camelcase */
/* eslint-disable brace-style, curly, nonblock-statement-body-position, no-template-curly-in-string, func-names */
// ==UserScript==
// @name         WME GIS Layers
// @namespace    https://greasyfork.org/users/45389
// @version      2024.09.04.001
// @description  Adds GIS layers in WME
// @author       MapOMatic
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// @connect      greasyfork.org
// @grant        GM_xmlhttpRequest
// @grant        GM_info
// @license      GNU GPLv3
// @contributionURL https://github.com/WazeDev/Thank-The-Authors
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// @connect www3.multco.us
// @connect www7.co.union.oh.us
// @connect xara1-4.cityofpetaluma.net
// @connect xmaps.indy.gov
// ==/UserScript==

/* global OpenLayers */
/* global W */
/* global WazeWrap */
/* global _ */
/* global turf */
/* global ESTreeProcessor */

(function main() {
    'use strict';

    // **************************************************************************************************************
    // IMPORTANT: Update this when releasing a new version of script that includes changes to the spreadsheet format
    //            that may cause old code to break.  This # should match the version listed in the spreadsheet
    //            i.e. update them at the same time.

    // const LAYER_DEF_VERSION = '2018.04.27.001';  // NOT ACTUALLY USED YET

    // **************************************************************************************************************
    // const UPDATE_MESSAGE = 'Bug fix due to WME update';
    // const UPDATE_MESSAGE = `<ul>${[
    //     'Added ability to shift layers. Right click a layer in the list to bring up the layer settings window.'
    // ].map(item => `<li>${item}</li>`).join('')}</ul><br>`;
    const GF_URL = 'https://greasyfork.org/scripts/369632-wme-gis-layers';
    // Used in tooltips to tell people who to report issues to.  Update if a new author takes ownership of this script.
    const SCRIPT_AUTHOR = 'MapOMatic';
    // const LAYER_INFO_URL = 'https://spreadsheets.google.com/feeds/list/1cEG3CvXSCI4TOZyMQTI50SQGbVhJ48Xip-jjWg4blWw/o7gusx3/public/values?alt=json';
    const LAYER_DEF_SPREADSHEET_URL = 'https://sheets.googleapis.com/v4/spreadsheets/1cEG3CvXSCI4TOZyMQTI50SQGbVhJ48Xip-jjWg4blWw/values/layerDefs';
    const API_KEY = 'YTJWNVBVRkplbUZUZVVGTlNXOWlVR1pWVjIxcE9VdHJNbVY0TTFoeWNrSlpXbFZuVmtWelRrMVVWUT09';
    const REQUEST_FORM_URL = 'https://docs.google.com/forms/d/e/1FAIpQLSevPQLz2ohu_LTge9gJ9Nv6PURmCmaSSjq0ayOJpGdRr2xI0g/viewform?usp=pp_url&entry.2116052852={username}';
    const DEC = s => atob(atob(s));
    const PRIVATE_LAYERS = { 'nc-henderson-sl-signs': ['the_cre8r', 'mapomatic'] }; // case sensitive -- use all lower case
    // const COUNTRIES = {
    //     'United States': {
    //         sheetId: '1cEG3CvXSCI4TOZyMQTI50SQGbVhJ48Xip-jjWg4blWw',
    //         sheetLayerRange: 'layerDefs'
    //     }
    // };
    const DEFAULT_STYLE = {
        fillColor: '#000',
        pointRadius: 4,
        label: '${label}',
        strokeColor: '#ffa500',
        strokeOpacity: '0.95',
        strokeWidth: 1.5,
        fontColor: '#ffc520',
        fontSize: '13',
        labelOutlineColor: 'black',
        labelOutlineWidth: 3
    };
    const LAYER_STYLES = {
        cities: {
            fillOpacity: 0.3,
            fillColor: '#f65',
            strokeColor: '#f65',
            fontColor: '#f62'
        },
        forests_parks: {
            fillOpacity: 0.4,
            fillColor: '#585',
            strokeColor: '#484',
            fontColor: '#8b8'
        },
        milemarkers: {
            strokeColor: '#fff',
            fontColor: '#fff',
            fontWeight: 'bold',
            fillOpacity: 0,
            labelYOffset: 10,
            pointRadius: 2,
            fontSize: 12
        },
        parcels: {
            fillOpacity: 0,
            fillColor: '#ffa500'
        },
        points: {
            strokeColor: '#000',
            fontColor: '#0ff',
            fillColor: '#0ff',
            labelYOffset: -10,
            labelAlign: 'ct'
        },
        post_offices: {
            strokeColor: '#000',
            fontColor: '#f84',
            fillColor: '#f84',
            fontWeight: 'bold',
            labelYOffset: -10,
            labelAlign: 'ct'
        },
        state_parcels: {
            fillOpacity: 0,
            strokeColor: '#e62',
            fillColor: '#e62',
            fontColor: '#e73'
        },
        state_points: {
            strokeColor: '#000',
            fontColor: '#3cf',
            fillColor: '#3cf',
            labelYOffset: -10,
            labelAlign: 'ct'
        },
        road_labels: {
            strokeOpacity: 0,
            fillOpacity: 0,
            fontColor: '#faf'
        },
        structures: {
            fillOpacity: 0,
            strokeColor: '#f7f',
            fontColor: '#f7f'
        }
    };
    let ROAD_STYLE;
    function initRoadStyle() {
        ROAD_STYLE = new OpenLayers.Style({
            pointRadius: 12,
            fillColor: '#369',
            pathLabel: '${label}',
            label: '',
            fontColor: '#faf',
            labelSelect: true,
            pathLabelYOffset: '${getOffset}',
            pathLabelCurve: '${getSmooth}',
            pathLabelReadable: '${getReadable}',
            labelAlign: '${getAlign}',
            labelOutlineWidth: 3,
            labelOutlineColor: '#000',
            strokeWidth: 3,
            stroke: true,
            strokeColor: '#f0f',
            strokeOpacity: 0.4,
            fontWeight: 'bold',
            fontSize: 11
        }, {
            context: {
                getOffset() { return -(W.map.getZoom() + 5); },
                getSmooth() { return ''; },
                getReadable() { return '1'; },
                getAlign() { return 'cb'; }
            }
        });
    }

    // eslint-disable-next-line no-unused-vars
    const _regexReplace = {
        // Strip leading zeros or blank full label for any label starting with a non-digit or
        // is a Zero Address, use with '' as replace.
        r0: /^(0+(\s.*)?|\D.*)/,
        // Strip Everything After Street Type to end of the string by use $1 and $2 capture
        // groups, use with replace '$1$2'
        // eslint-disable-next-line max-len
        r1: /^(.* )(Ave(nue)?|Dr(ive)?|St(reet)?|C(our)?t|Cir(cle)?|Blvd|Boulevard|Pl(ace)?|Ln|Lane|Fwy|Freeway|R(oa)?d|Ter(r|race)?|Tr(ai)?l|Way|Rte \d+|Route \d+)\b.*/gi,
        // Strip SPACE 5 Digits from end of string, use with replace ''
        r2: /\s\d{5}$/,
        // Strip Everything after a "~", ",", ";" to the end of the string, use with replace ''
        r3: /(~|,|;|\s?\r\n).*$/,
        // Move the digits after the last space to before the rest of the string using, use with
        // replace '$2 $1'
        r4: /^(.*)\s(\d+).*/,
        // Insert newline between digits (including "-") and everything after the digits,
        // except(and before) a ",", use with replace '$1\n$2'
        r5: /^([-\d]+)\s+([^,]+).*/,
        // Insert newline between digits and everything after the digits, use with
        // replace '$1\n$2'
        r6: /^(\d+)\s+(.*)/
    };

    let _gisLayers = [];

    const _layerRefinements = [
        {
            id: 'us-post-offices',
            labelHeaderFields: ['LOCALE_NAME']
        }
    ];

    const STATES = {
        _states: [
            ['US (Country)', 'US', -1], ['Alabama', 'AL', 1], ['Alaska', 'AK', 2],
            ['American Samoa', 'AS', 60], ['Arizona', 'AZ', 4], ['Arkansas', 'AR', 5],
            ['California', 'CA', 6], ['Colorado', 'CO', 8], ['Connecticut', 'CT', 9],
            ['Delaware', 'DE', 10], ['District of Columbia', 'DC', 11], ['Florida', 'FL', 12],
            ['Georgia', 'GA', 13], ['Guam', 'GU', 66], ['Hawaii', 'HI', 15], ['Idaho', 'ID', 16],
            ['Illinois', 'IL', 17], ['Indiana', 'IN', 18], ['Iowa', 'IA', 19],
            ['Kansas', 'KS', 20], ['Kentucky', 'KY', 21], ['Louisiana', 'LA', 22],
            ['Maine', 'ME', 23], ['Maryland', 'MD', 24], ['Massachusetts', 'MA', 25],
            ['Michigan', 'MI', 26], ['Minnesota', 'MN', 27], ['Mississippi', 'MS', 28],
            ['Missouri', 'MO', 29], ['Montana', 'MT', 30], ['Nebraska', 'NE', 31],
            ['Nevada', 'NV', 32], ['New Hampshire', 'NH', 33], ['New Jersey', 'NJ', 34],
            ['New Mexico', 'NM', 35], ['New York', 'NY', 36], ['North Carolina', 'NC', 37],
            ['North Dakota', 'ND', 38], ['Northern Mariana Islands', 'MP', 69], ['Ohio', 'OH', 39],
            ['Oklahoma', 'OK', 40], ['Oregon', 'OR', 41], ['Pennsylvania', 'PA', 42],
            ['Puerto Rico', 'PR', 72], ['Rhode Island', 'RI', 44], ['South Carolina', 'SC', 45],
            ['South Dakota', 'SD', 46], ['Tennessee', 'TN', 47], ['Texas', 'TX', 48],
            ['Utah', 'UT', 49], ['Vermont', 'VT', 50], ['Virgin Islands', 'VI', 78],
            ['Virginia', 'VA', 51], ['Washington', 'WA', 53], ['West Virginia', 'WV', 54],
            ['Wisconsin', 'WI', 55], ['Wyoming', 'WY', 56]
        ],
        toAbbr(fullName) { return this._states.find(a => a[0] === fullName)[1]; },
        toFullName(abbr) { return this._states.find(a => a[1] === abbr)[0]; },
        toFullNameArray() { return this._states.map(a => a[0]); },
        toAbbrArray() { return this._states.map(a => a[1]); },
        fromId(id) { return this._states.find(a => a[2] === id); }
    };
    const DEFAULT_VISIBLE_AT_ZOOM = 18;
    const SETTINGS_STORE_NAME = 'wme_gis_layers_fl';
    const COUNTIES_URL = 'https://tigerweb.geo.census.gov/arcgis/rest/services/Census2020/State_County/MapServer/1/';
    const ALERT_UPDATE = false;
    const SCRIPT_NAME = GM_info.script.name;
    const SCRIPT_VERSION = GM_info.script.version;
    const DOWNLOAD_URL = 'https://greasyfork.org/scripts/369632-wme-gis-layers/code/WME%20GIS%20Layers.user.js';
    const SCRIPT_VERSION_CHANGES = [];
    let _mapLayer = null;
    let _roadLayer = null;
    let _settings = {};
    let _ignoreFetch = false;
    let _lastToken = {};

    const DEBUG = true;
    // function log(message) { console.log('GIS Layers:', message); }
    function logError(message) { console.error(`${SCRIPT_NAME}:`, message); }
    function logDebug(message) { if (DEBUG) console.debug(`${SCRIPT_NAME}:`, message); }
    // function logWarning(message) { console.warn('GIS Layers:', message); }

    let _layerSettingsDialog;

    class LayerSettingsDialog {
        constructor() {
            this._$titleText = $('<span>');
            this._$closeButton = $('<span>', {
                style: 'cursor:pointer;padding-left:4px;font-size:17px;color:#d6e6f3;float:right;',
                class: 'fa fa-window-close'
            }).click(() => this._onCloseButtonClick());
            this._$shiftUpButton = LayerSettingsDialog._createShiftButton('fa-angle-up').click(() => this._onShiftButtonClick(0, 1));
            this._$shiftLeftButton = LayerSettingsDialog._createShiftButton('fa-angle-left').click(() => this._onShiftButtonClick(-1, 0));
            this._$shiftRightButton = LayerSettingsDialog._createShiftButton('fa-angle-right').click(() => this._onShiftButtonClick(1, 0));
            this._$shiftDownButton = LayerSettingsDialog._createShiftButton('fa-angle-down').click(() => this._onShiftButtonClick(0, -1));
            this._$resetButton = $('<button>', {
                class: 'form-control',
                style: 'height: 24px; width: auto; padding: 2px 6px 0px 6px; display: inline-block; float: right;'
            }).text('Reset').click(() => this._onResetButtonClick());

            this._dialogDiv = $('<div>', {
                style: 'position: fixed; top: 15%; left: 400px; width: 200px; z-index: 100; background-color: #73a9bd; border-width: 1px; border-style: solid;'
                    + 'border-radius: 10px; box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.7); border-color: #50667b; padding: 4px;'
            }).append($('<div>').append( // The extra div is needed here. When the header text wraps, the main dialog div won't expand properly without it.
                // HEADER
                $('<div>', { style: 'border-radius:5px 5px 0px 0px; padding: 4px; color: #fff; font-weight: bold; text-align:left; cursor: default;' }).append(
                    this._$closeButton,
                    this._$titleText
                ),
                // BODY
                $('<div>', { style: 'border-radius: 5px; width: 100%; padding: 4px; background-color:#d6e6f3; display:inline-block; margin-right:5px;' }).append(
                    this._$resetButton,
                    $('<input>', {
                        type: 'radio', id: 'gisLayerShiftAmt1', name: 'gisLayerShiftAmt', value: '1', checked: 'checked'
                    }),
                    $('<label>', { for: 'gisLayerShiftAmt1' }).text('1m'),
                    $('<input>', {
                        type: 'radio', id: 'gisLayerShiftAmt10', name: 'gisLayerShiftAmt', value: '10', style: 'margin-left: 6px'
                    }),
                    $('<label>', { for: 'gisLayerShiftAmt10' }).text('10m'),
                    $('<div>', { style: 'padding: 4px' }).append(
                        $('<table>', { style: 'table-layout:fixed; width:60px; height:84px; margin-left:auto;margin-right:auto;' }).append(
                            $('<tr>', { style: 'width: 20px; height: 28px;' }).append(
                                $('<td>', { align: 'center' }),
                                $('<td>', { align: 'center' }).append(this._$shiftUpButton),
                                $('<td>', { align: 'center' })
                            ),
                            $('<tr>', { style: 'width: 20px; height: 28px;' }).append(
                                $('<td>', { align: 'center' }).append(this._$shiftLeftButton),
                                $('<td>', { align: 'center' }),
                                $('<td>', { align: 'center' }).append(this._$shiftRightButton)
                            ),
                            $('<tr>', { style: 'width: 20px; height: 28px;' }).append(
                                $('<td>', { align: 'center' }),
                                $('<td>', { align: 'center' }).append(this._$shiftDownButton),
                                $('<td>', { align: 'center' })
                            )
                        )
                    )
                )
            ));

            this.hide();
            this._dialogDiv.appendTo('body');

            if (typeof jQuery.ui !== 'undefined') {
                const that = this;
                this._dialogDiv.draggable({
                    // Gotta nuke the height setting the dragging inserts otherwise the panel cannot dynamically resize
                    stop() { that._dialogDiv.css('height', ''); }
                });
            }
        }

        get gisLayer() {
            return this._gisLayer;
        }

        set gisLayer(value) {
            if (value !== this._gisLayer) {
                this._gisLayer = value;
                this.title = value.name;
            }
        }

        get title() {
            return this._$titleText.text();
        }

        set title(value) {
            this._$titleText.text(value);
        }

        // eslint-disable-next-line class-methods-use-this
        getShiftAmount() {
            return $('input[name=gisLayerShiftAmt]:checked').val();
        }

        show() {
            this._dialogDiv.show();
        }

        hide() {
            this._dialogDiv.hide();
        }

        _onCloseButtonClick() {
            this.hide();
        }

        _onShiftButtonClick(x, y) {
            const shiftAmount = this.getShiftAmount();
            x *= shiftAmount;
            y *= shiftAmount;
            this._shiftLayerFeatures(x, y);
            const { id } = this._gisLayer;
            let offset = _settings.getLayerSetting(id, 'offset');
            if (!offset) {
                offset = { x: 0, y: 0 };
                _settings.setLayerSetting(id, 'offset', offset);
            }
            offset.x += x;
            offset.y += y;
            saveSettingsToStorage();
        }

        _onResetButtonClick() {
            const offset = _settings.getLayerSetting(this._gisLayer.id, 'offset');
            if (offset) {
                this._shiftLayerFeatures(offset.x * -1, offset.y * -1);
                delete _settings.layers[this._gisLayer.id].offset;
                saveSettingsToStorage();
            }
        }

        _shiftLayerFeatures(x, y) {
            const layer = this.gisLayer.isRoadLayer ? _roadLayer : _mapLayer;
            layer.getFeaturesByAttribute('layerID', this.gisLayer.id).forEach(f => f.geometry.move(x, y));
            layer.redraw();
        }

        static _createShiftButton(fontAwesomeClass) {
            return $('<button>', {
                class: 'form-control',
                style: 'cursor:pointer;font-size:14px;padding: 3px;border-radius: 5px;width: 21px;height: 21px;'
            }).append(
                $('<i>', { class: 'fa', style: 'vertical-align: super' }).addClass(fontAwesomeClass)
            );
        }
    }

    function loadSettingsFromStorage() {
        const loadedSettings = $.parseJSON(localStorage.getItem(SETTINGS_STORE_NAME));
        const defaultSettings = {
            lastVersion: null,
            visibleLayers: [],
            onlyShowApplicableLayers: false,
            selectedStates: [],
            enabled: true,
            fillParcels: false,
            toggleHnsOnlyShortcut: '',
            toggleEnabledShortcut: '',
            oneTimeAlerts: {},
            layers: {}
        };
        _settings = loadedSettings || defaultSettings;
        Object.keys(defaultSettings).forEach(prop => {
            if (!_settings.hasOwnProperty(prop)) {
                _settings[prop] = defaultSettings[prop];
            }
        });

        _settings.getLayerSetting = function getLayerSetting(layerID, settingName) {
            const layerSettings = this.layers[layerID];
            if (!layerSettings) {
                return undefined;
            }
            return layerSettings[settingName];
        };
        _settings.setLayerSetting = function setLayerSetting(layerID, settingName, value) {
            let layerSettings = this.layers[layerID];
            if (!layerSettings) {
                layerSettings = {};
                this.layers[layerID] = layerSettings;
            }
            layerSettings[settingName] = value;
        };
    }

    function saveSettingsToStorage() {
        // Check for existance of action first, due to WME beta issue.
        if (W.accelerators.Actions.GisLayersAddrDisplay) {
            let keys = '';
            const { shortcut } = W.accelerators.Actions.GisLayersAddrDisplay;
            if (shortcut) {
                if (shortcut.altKey) keys += 'A';
                if (shortcut.shiftKey) keys += 'S';
                if (shortcut.ctrlKey) keys += 'C';
                if (keys.length) keys += '+';
                if (shortcut.keyCode) keys += shortcut.keyCode;
            }
            _settings.toggleHnsOnlyShortcut = keys;
        }
        if (W.accelerators.Actions.GisLayersToggleEnabled) {
            let keys = '';
            const { shortcut } = W.accelerators.Actions.GisLayersToggleEnabled;
            if (shortcut) {
                if (shortcut.altKey) keys += 'A';
                if (shortcut.shiftKey) keys += 'S';
                if (shortcut.ctrlKey) keys += 'C';
                if (keys.length) keys += '+';
                if (shortcut.keyCode) keys += shortcut.keyCode;
            }
            _settings.toggleEnabledShortcut = keys;
        }
        _settings.lastVersion = SCRIPT_VERSION;
        localStorage.setItem(SETTINGS_STORE_NAME, JSON.stringify(_settings));
        logDebug('Settings saved');
    }

    function getOLMapExtent() {
        let extent = W.map.getExtent();
        if (Array.isArray(extent)) {
            extent = new OpenLayers.Bounds(extent);
            extent.transform('EPSG:4326', 'EPSG:3857');
        }
        return extent;
    }

    function getUrl(extent, gisLayer) {
        if (gisLayer.spatialReference) {
            const proj = new OpenLayers.Projection(`EPSG:${gisLayer.spatialReference}`);
            extent.transform(W.map.getProjectionObject(), proj);
        }
        let layerOffset = _settings.getLayerSetting(gisLayer.id, 'offset');
        if (!layerOffset) {
            layerOffset = { x: 0, y: 0 };
        }
        const geometry = {
            xmin: extent.left - layerOffset.x,
            ymin: extent.bottom - layerOffset.y,
            xmax: extent.right - layerOffset.x,
            ymax: extent.top - layerOffset.y,
            spatialReference: {
                wkid: gisLayer.spatialReference ? gisLayer.spatialReference : 102100,
                latestWkid: gisLayer.spatialReference ? gisLayer.spatialReference : 3857
            }
        };
        const geometryStr = JSON.stringify(geometry);
        let fields = gisLayer.labelFields;
        if (gisLayer.labelHeaderFields) {
            fields = fields.concat(gisLayer.labelHeaderFields);
        }
        if (gisLayer.distinctFields) {
            fields = fields.concat(gisLayer.distinctFields);
        }
        let url = `${gisLayer.url}/query?geometry=${encodeURIComponent(geometryStr)}`;
        url += gisLayer.token ? `&token=${gisLayer.token}` : '';
        url += `&outFields=${encodeURIComponent(fields.join(','))}`;
        url += '&returnGeometry=true&spatialRel=esriSpatialRelIntersects&geometryType=esriGeometryEnvelope';
        url += `&inSR=${gisLayer.spatialReference ? gisLayer.spatialReference : '102100'}`;
        url += '&outSR=3857&f=json';
        url += gisLayer.where ? `&where=${encodeURIComponent(gisLayer.where)}` : '';

        logDebug(`Request URL: ${url}`);
        return url;
    }

    function hashString(value) {
        let hash = 0;
        if (value.length === 0) return hash;
        for (let i = 0; i < value.length; i++) {
            const chr = value.charCodeAt(i);
            // eslint-disable-next-line no-bitwise
            hash = ((hash << 5) - hash) + chr;
            // eslint-disable-next-line no-bitwise
            hash |= 0; // Convert to 32bit integer
        }
        return hash;
    }

    function getCountiesUrl(extent) {
        const geometry = {
            xmin: extent.left,
            ymin: extent.bottom,
            xmax: extent.right,
            ymax: extent.top,
            spatialReference: { wkid: 102100, latestWkid: 3857 }
        };
        const url = `${COUNTIES_URL}/query?geometry=${encodeURIComponent(JSON.stringify(geometry))}`;
        return `${url}&outFields=BASENAME%2CSTATE&returnGeometry=false&spatialRel=esriSpatialRelIntersects`
            + '&geometryType=esriGeometryEnvelope&inSR=102100&outSR=3857&f=json';
    }

    let _countiesInExtent = [];

    function getFetchableLayers(getInvisible) {
        if (W.map.getZoom() < 12) return [];
        return _gisLayers.filter(gisLayer => {
            const isValidUrl = gisLayer.url && gisLayer.url.trim().length > 0;
            const isVisible = (getInvisible || _settings.visibleLayers.includes(gisLayer.id))
                && _settings.selectedStates.includes(gisLayer.state);
            const isInState = gisLayer.state === 'US' || _countiesInExtent.some(county => county.stateInfo[1] === gisLayer.state);
            // Be sure to use hasOwnProperty when checking this, since 0 is a valid value.
            const isValidZoom = getInvisible || W.map.getZoom() >= (gisLayer.hasOwnProperty('visibleAtZoom')
                ? gisLayer.visibleAtZoom : DEFAULT_VISIBLE_AT_ZOOM);
            return isValidUrl && isInState && isVisible && isValidZoom;
        });
    }

    function filterLayerCheckboxes() {
        const applicableLayers = getFetchableLayers(true).filter(layer => {
            const hasCounties = layer.hasOwnProperty('counties');
            return (hasCounties && layer.counties.some(countyName => _countiesInExtent.some(county => county.name === countyName.toLowerCase()
                && layer.state === county.stateInfo[1]))) || !hasCounties;
        });
        const statesToHide = STATES.toAbbrArray();

        _gisLayers.forEach(gisLayer => {
            const id = `#gis-layer-${gisLayer.id}-container`;
            if (!_settings.onlyShowApplicableLayers || applicableLayers.includes(gisLayer)) {
                $(id).show();
                $(`#gis-layers-for-${gisLayer.state}`).show();
                const idx = statesToHide.indexOf(gisLayer.state);
                if (idx > -1) statesToHide.splice(idx, 1);
            } else {
                $(id).hide();
            }
        });
        if (_settings.onlyShowApplicableLayers) {
            statesToHide.forEach(st => $(`#gis-layers-for-${st}`).hide());
        }
    }

    const ROAD_ABBR = [
        [/\bAVENUE$/, 'AVE'], [/\bCIRCLE$/, 'CIR'], [/\bCOURT$/, 'CT'], [/\bDRIVE$/, 'DR'],
        [/\bLANE$/, 'LN'], [/\bPARK$/, 'PK'], [/\bPLACE$/, 'PL'], [/\bROAD$/, 'RD'], [/\bSTREET$/, 'ST'],
        [/\bTERRACE$/, 'TER']
    ];

    const labelProcessingGlobalVariables = {
        Number,
        Math,
        Boolean,
        parseInt,
        Date,
        _regexReplace: {
            // Strip leading zeros or blank full label for any label starting with a non-digit or
            // is a Zero Address, use with '' as replace.
            r0: /^(0+(\s.*)?|\D.*)/,
            // Strip Everything After Street Type to end of the string by use $1 and $2 capture
            // groups, use with replace '$1$2'
            // eslint-disable-next-line max-len
            r1: /^(.* )(Ave(nue)?|Dr(ive)?|St(reet)?|C(our)?t|Cir(cle)?|Blvd|Boulevard|Pl(ace)?|Ln|Lane|Fwy|Freeway|R(oa)?d|Ter(r|race)?|Tr(ai)?l|Way|Rte \d+|Route \d+)\b.*/gi,
            // Strip SPACE 5 Digits from end of string, use with replace ''
            r2: /\s\d{5}$/,
            // Strip Everything after a "~", ",", ";" to the end of the string, use with replace ''
            r3: /(~|,|;|\s?\r\n).*$/,
            // Move the digits after the last space to before the rest of the string using, use with
            // replace '$2 $1'
            r4: /^(.*)\s(\d+).*/,
            // Insert newline between digits (including "-") and everything after the digits,
            // except(and before) a ",", use with replace '$1\n$2'
            r5: /^([-\d]+)\s+([^,]+).*/,
            // Insert newline between digits and everything after the digits, use with
            // replace '$1\n$2'
            r6: /^(\d+)\s+(.*)/
        }
    };

    function processLabel(gisLayer, item, displayLabelsAtZoom, area, isPolyLine = false) {
        let label = '';
        if (gisLayer.labelHeaderFields) {
            label = `${gisLayer.labelHeaderFields.map(
                fieldName => item.attributes[fieldName]
            ).join(' ').trim()}\n`;
        }
        if (W.map.getZoom() >= displayLabelsAtZoom || area >= 5000) {
            label += gisLayer.labelFields.map(
                fieldName => item.attributes[fieldName]
            ).join(' ').trim();
            if (gisLayer.processLabel) {
                if (gisLayer.labelProcessingError) {
                    label = 'ERROR';
                } else {
                    labelProcessingGlobalVariables.label = label;
                    labelProcessingGlobalVariables.fieldValues = item.attributes;
                    const result = ESTreeProcessor.execute(gisLayer.processLabel, labelProcessingGlobalVariables);
                    label = result.output?.trim() ?? '';
                }
            }
        }

        if (!isPolyLine) {
            if (label && [
                LAYER_STYLES.points, LAYER_STYLES.parcels, LAYER_STYLES.state_points,
                LAYER_STYLES.state_parcels
            ].includes(gisLayer.style)) {
                if (_settings.addrLabelDisplay === 'hn') {
                    const m = label.match(/^\d+/);
                    label = m ? m[0] : '';
                } else if (_settings.addrLabelDisplay === 'street') {
                    const m = label.match(/^(?:\d+\s)?(.*)/);
                    label = m ? m[1].trim() : '';
                }
                else if (_settings.addrLabelDisplay === 'none') {
                    label = '';
                }
            }
        }
        return label;
    }
    function processFeatures(data, token, gisLayer) {
        const features = [];
        if (data.skipIt) {
            // do nothing
        } else if (data.error) {
            logError(`Error in layer "${gisLayer.name}": ${data.error.message}`);
        } else {
            const items = data.features || [];
            if (!token.cancel) {
                let error = false;
                const distinctValues = [];
                items.forEach(item => {
                    let skipIt = false;
                    if (!token.cancel && !error) {
                        let feature;
                        let featureGeometry;
                        let area;
                        if (gisLayer.distinctFields) {
                            if (distinctValues.some(v => gisLayer.distinctFields.every(
                                fld => v[fld] === item.attributes[fld]
                            ))) {
                                skipIt = true;
                            } else {
                                const dist = {};
                                gisLayer.distinctFields.forEach(fld => (dist[fld] = item.attributes[fld]));
                                distinctValues.push(dist);
                            }
                        }
                        if (!skipIt) {
                            let isPolyLine = false;
                            let layerOffset = _settings.getLayerSetting(gisLayer.id, 'offset');
                            if (!layerOffset) {
                                layerOffset = { x: 0, y: 0 };
                            }
                            // Special handling for this layer, because it doesn't have a geometry property.
                            // Coordinates are stored in the attributes.
                            if (gisLayer.id === 'nc-richmond-co-pts') {
                                const pt = new OpenLayers.Geometry.Point(item.attributes.XCOOR, item.attributes.YCOOR);
                                pt.transform(W.map.getOLMap().displayProjection, W.map.getProjectionObject());
                                item.geometry = pt;
                            }
                            if (item.geometry) {
                                if (item.geometry.x) {
                                    featureGeometry = new OpenLayers.Geometry.Point(
                                        item.geometry.x + layerOffset.x,
                                        item.geometry.y + layerOffset.y
                                    );
                                } else if (item.geometry.points) {
                                    // @TODO Fix for multiple points instead of just grabbing first.
                                    featureGeometry = new OpenLayers.Geometry.Point(
                                        item.geometry.points[0][0] + layerOffset.x,
                                        item.geometry.points[0][1] + layerOffset.y
                                    );
                                } else if (item.geometry.rings) {
                                    const rings = [];
                                    item.geometry.rings.forEach(ringIn => {
                                        const pnts = [];
                                        for (let i = 0; i < ringIn.length; i++) {
                                            pnts.push(new OpenLayers.Geometry.Point(
                                                ringIn[i][0] + layerOffset.x,
                                                ringIn[i][1] + layerOffset.y
                                            ));
                                        }
                                        rings.push(new OpenLayers.Geometry.LinearRing(pnts));
                                    });
                                    featureGeometry = new OpenLayers.Geometry.Polygon(rings);
                                    if (gisLayer.areaToPoint) {
                                        featureGeometry = featureGeometry.getCentroid();
                                    } else {
                                        area = featureGeometry.getArea();
                                    }
                                } else if (data.geometryType === 'esriGeometryPolyline') {
                                    // We have to handle polylines differently since each item can have multiple features.
                                    // In terms of ArcGIS, each feature's geometry can have multiple paths.  For instance
                                    // a single road can be broken into parts that are physically not connected to each other.
                                    const hasVisibleAtZoom = gisLayer.hasOwnProperty('visibleAtZoom');
                                    const hasLabelsVisibleAtZoom = gisLayer.hasOwnProperty('labelsVisibleAtZoom');
                                    const displayLabelsAtZoom = hasLabelsVisibleAtZoom ? gisLayer.labelsVisibleAtZoom
                                        : (hasVisibleAtZoom ? gisLayer.visibleAtZoom : DEFAULT_VISIBLE_AT_ZOOM) + 1;
                                    const label = processLabel(gisLayer, item, displayLabelsAtZoom, area, true);

                                    // Use Turf library to clip the geometry to the screen bounds.
                                    // This allows labels to stay in view on very long roads.
                                    const mls = turf.multiLineString(item.geometry.paths);
                                    const e = getOLMapExtent();
                                    const bbox = [e.left, e.bottom, e.right, e.top];
                                    const clipped = turf.bboxClip(mls, bbox);
                                    if (clipped.geometry.type === 'LineString') {
                                        item.geometry.paths = [clipped.geometry.coordinates];
                                    } else if (clipped.geometry.type === 'MultiLineString') {
                                        item.geometry.paths = clipped.geometry.coordinates;
                                    }

                                    item.geometry.paths.forEach(path => {
                                        const pointList = [];
                                        path.forEach(point => pointList.push(new OpenLayers.Geometry.Point(
                                            point[0] + layerOffset.x,
                                            point[1] + layerOffset.y
                                        )));
                                        featureGeometry = new OpenLayers.Geometry.LineString(pointList);
                                        featureGeometry.skipDupeCheck = true;

                                        const attributes = {
                                            layerID: gisLayer.id,
                                            label
                                        };

                                        const lineFeature = new OpenLayers.Feature.Vector(featureGeometry, attributes);
                                        features.push(lineFeature);
                                    });
                                    isPolyLine = true;
                                } else {
                                    logDebug(`Unexpected feature type in layer: ${JSON.stringify(item)}`);
                                    logError(`Error: Unexpected feature type in layer "${gisLayer.name}"`);
                                    error = true;
                                }
                                if (!error && !isPolyLine) {
                                    const hasVisibleAtZoom = gisLayer.hasOwnProperty('visibleAtZoom');
                                    const hasLabelsVisibleAtZoom = gisLayer.hasOwnProperty('labelsVisibleAtZoom');
                                    const displayLabelsAtZoom = hasLabelsVisibleAtZoom ? gisLayer.labelsVisibleAtZoom
                                        : (hasVisibleAtZoom ? gisLayer.visibleAtZoom : DEFAULT_VISIBLE_AT_ZOOM) + 1;
                                    const label = processLabel(gisLayer, item, displayLabelsAtZoom, area);
                                    const attributes = {
                                        layerID: gisLayer.id,
                                        label
                                    };
                                    feature = new OpenLayers.Feature.Vector(featureGeometry, attributes);
                                    features.push(feature);
                                }
                            }
                        }
                    }
                });
            }
        }
        if (!token.cancel) {
            // Check for duplicate geometries.
            for (let i = 0; i < features.length; i++) {
                const f1 = features[i];
                if (!f1.geometry.skipDupeCheck) {
                    const c1 = f1.geometry.getCentroid();
                    let labels = [f1.attributes.label];
                    for (let j = i + 1; j < features.length; j++) {
                        const f2 = features[j];
                        if (!f2.geometry.skipDupeCheck && f2.geometry.getCentroid().distanceTo(c1) < 1) {
                            features.splice(j, 1);
                            labels.push(f2.attributes.label);
                            j--;
                        }
                    }
                    labels = _.uniq(labels);
                    if (labels.length > 1) {
                        labels.forEach((label, idx) => {
                            label = label.replace(/\n/g, ' ').replace(/\s{2,}/, ' ').replace(/\bUNIT\s.{1,5}$/i, '').trim();
                            ROAD_ABBR.forEach(abbr => (label = label.replace(abbr[0], abbr[1])));
                            labels[idx] = label;
                        });
                        labels = _.uniq(labels);
                        labels.sort();
                        if (labels.length > 12) {
                            const len = labels.length;
                            labels = labels.slice(0, 10);
                            labels.push(`(${len - 10} more...)`);
                        }
                        f1.attributes.label = _.uniq(labels).join('\n');
                    } else {
                        let { label } = f1.attributes;
                        ROAD_ABBR.forEach(abbr => (label = label.replace(abbr[0], abbr[1])));
                        f1.attributes.label = label;
                    }
                }
            }

            const layer = gisLayer.isRoadLayer ? _roadLayer : _mapLayer;
            layer.removeFeatures(layer.getFeaturesByAttribute('layerID', gisLayer.id));
            layer.addFeatures(features);

            if (features.length) {
                $(`label[for="gis-layer-${gisLayer.id}"]`).css({ color: '#00a009' });
            }
        }
    } // END processFeatures()

    function fetchFeatures() {
        if (_ignoreFetch) return;
        if (W.map.getZoom() < 12) {
            filterLayerCheckboxes();
            return;
        }
        _lastToken.cancel = true;
        _lastToken = { cancel: false, features: [], layersProcessed: 0 };
        $('.gis-state-layer-label').css({ color: '#777' });

        let _layersCleared = false;

        // if (layersToFetch.length) {
        const extent = getOLMapExtent();
        GM_xmlhttpRequest({
            url: getCountiesUrl(extent),
            method: 'GET',
            onload(res) {
                if (res.status < 400) {
                    const data = $.parseJSON(res.responseText);
                    if (data.error) {
                        logError(`Error in US Census counties data: ${data.error.message}`);
                    } else {
                        _countiesInExtent = data.features.map(feature => {
                            const name = feature.attributes.BASENAME.toLowerCase();
                            const stateInfo = STATES.fromId(parseInt(feature.attributes.STATE, 10));
                            return { name, stateInfo };
                        });
                        logDebug(`US Census counties: ${_countiesInExtent.map(c => `${c.name} ${c.stateInfo[1]}`).join(', ')}`);

                        let layersToFetch;
                        if (!_layersCleared) {
                            _layersCleared = true;
                            layersToFetch = getFetchableLayers();

                            // Remove features of any layers that won't be mapped.
                            _gisLayers.forEach(gisLayer => {
                                if (!layersToFetch.includes(gisLayer)) {
                                    _mapLayer.removeFeatures(_mapLayer.getFeaturesByAttribute('layerID', gisLayer.id));
                                    _roadLayer.removeFeatures(_roadLayer.getFeaturesByAttribute('layerID', gisLayer.id));
                                }
                            });
                        }

                        layersToFetch = layersToFetch.filter(layer => !layer.hasOwnProperty('counties')
                            || layer.counties.some(countyName => _countiesInExtent.some(county => county.name === countyName.toLowerCase()
                                && layer.state === county.stateInfo[1])));
                        filterLayerCheckboxes();
                        logDebug(`Fetching ${layersToFetch.length} layers...`);
                        logDebug(layersToFetch);
                        layersToFetch.forEach(gisLayer => {
                            const url = getUrl(extent, gisLayer);
                            GM_xmlhttpRequest({
                                url,
                                context: _lastToken,
                                method: 'GET',
                                onload(res2) {
                                    if (res2.status < 400) { // Handle stupid issue where http 4## is considered success
                                        processFeatures($.parseJSON(res2.responseText), res2.context, gisLayer);
                                    } else {
                                        logDebug(`HTTP request error: ${JSON.stringify(res2)}`);
                                        logError(`Could not fetch layer "${gisLayer.id}". Request returned ${res2.status}`);
                                    }
                                },
                                onerror(res3) {
                                    logDebug(`xmlhttpRequest error:${JSON.stringify(res3)}`);
                                    logError(`Could not fetch layer "${gisLayer.id}". An error was thrown.`);
                                }
                            });
                        });
                    }
                } else {
                    logDebug(`HTTP request error: ${JSON.stringify(res)}`);
                    logError(`Could not fetch counties from US Census site.  Request returned ${res.status}`);
                }
            },
            onerror(res) {
                logDebug(`xmlhttpRequest error:${JSON.stringify(res)}`);
                logError('Could not fetch counties from US Census site.  An error was thrown.');
            }
        });
    }

    function showScriptInfoAlert() {
        /* Check version and alert on update */
        if (ALERT_UPDATE && SCRIPT_VERSION !== _settings.lastVersion) {
            // alert(SCRIPT_VERSION_CHANGES);
            let releaseNotes = '';
            releaseNotes += '<p>What\'s New:</p>';
            if (SCRIPT_VERSION_CHANGES.length > 0) {
                releaseNotes += '<ul>';
                for (let idx = 0; idx < SCRIPT_VERSION_CHANGES.length; idx++)
                    releaseNotes += `<li>${SCRIPT_VERSION_CHANGES[idx]}`;
                releaseNotes += '</ul>';
            }
            else {
                releaseNotes += '<ul><li>Nothing major.</ul>';
            }
            WazeWrap.Interface.ShowScriptUpdate(GM_info.script.name, SCRIPT_VERSION, releaseNotes, GF_URL);
        }
    }

    function setEnabled(value) {
        _settings.enabled = value;
        saveSettingsToStorage();
        _mapLayer.setVisibility(value);
        _roadLayer.setVisibility(value);
        const color = value ? '#00bd00' : '#ccc';
        $('span#gis-layers-power-btn').css({ color });
        if (value) fetchFeatures();
        $('#layer-switcher-item_gis_layers').prop('checked', value);
    }

    function onGisLayerToggleChanged() {
        const checked = $(this).is(':checked');
        const layerId = $(this).data('layer-id');
        const idx = _settings.visibleLayers.indexOf(layerId);
        if (checked) {
            const gisLayer = _gisLayers.find(l => l.id === layerId);
            if (gisLayer.oneTimeAlert) {
                const lastAlertHash = _settings.oneTimeAlerts[layerId];
                const newAlertHash = hashString(gisLayer.oneTimeAlert);
                if (lastAlertHash !== newAlertHash) {
                    // alert(`Layer: ${gisLayer.name}\n\nMessage:\n${gisLayer.oneTimeAlert}`);
                    WazeWrap.Alerts.info(GM_info.script.name, `Layer: ${gisLayer.name}<br><br>Message:<br>${gisLayer.oneTimeAlert}`);
                    _settings.oneTimeAlerts[layerId] = newAlertHash;
                    saveSettingsToStorage();
                }
            }
            if (idx === -1) _settings.visibleLayers.push(layerId);
        } else if (idx > -1) _settings.visibleLayers.splice(idx, 1);
        if (!_ignoreFetch) {
            saveSettingsToStorage();
            fetchFeatures();
        }
    }

    function onOnlyShowApplicableLayersChanged() {
        _settings.onlyShowApplicableLayers = $(this).is(':checked');
        saveSettingsToStorage();
        fetchFeatures();
    }

    function onStateCheckChanged(evt) {
        const state = evt.data;
        const idx = _settings.selectedStates.indexOf(state);
        if (evt.target.checked) {
            if (idx === -1) _settings.selectedStates.push(state);
        } else if (idx > -1) _settings.selectedStates.splice(idx, 1);
        if (!_ignoreFetch) {
            saveSettingsToStorage();
            initLayersTab();
            fetchFeatures();
        }
    }

    function onLayerCheckboxChanged(checked) {
        setEnabled(checked);
    }

    function setFillParcels(doFill) {
        [LAYER_STYLES.parcels, LAYER_STYLES.state_parcels].forEach(style => {
            style.fillOpacity = doFill ? 0.2 : 0;
        });
    }

    function onFillParcelsCheckedChanged(evt) {
        const { checked } = evt.target;
        setFillParcels(checked);
        _settings.fillParcels = checked;
        saveSettingsToStorage();
        fetchFeatures();
    }

    function onMapMove() {
        if (_settings.enabled) fetchFeatures();
    }

    function onRefreshLayersClick() {
        const $btn = $('#gis-layers-refresh');
        if (!$btn.hasClass('fa-spin')) {
            $btn.css({ cursor: 'auto' });
            $btn.addClass('fa-spin');
            init(false);
        }
    }

    function onChevronClick(evt) {
        const $target = $(evt.currentTarget);
        $($target.children()[0])
            .toggleClass('fa fa-fw fa-chevron-down')
            .toggleClass('fa fa-fw fa-chevron-right');
        const $div = $($target.siblings()[0]);
        if ($div.css('display') === 'none') {
            $div.css('display', 'block');
        } else {
            $div.css('display', 'none');
        }
    }

    function doToggleABunch(evt, checkState) {
        _ignoreFetch = true;
        $(evt.target).closest('fieldset').find('input').prop('checked', !checkState).trigger('click');
        _ignoreFetch = false;
        saveSettingsToStorage();
        if (evt.data) initLayersTab();
        fetchFeatures();
    }

    function onSelectAllClick(evt) {
        doToggleABunch(evt, true);
    }

    function onSelectNoneClick(evt) {
        doToggleABunch(evt, false);
    }

    function onGisAddrDisplayChange(evt) {
        _settings.addrLabelDisplay = evt.target.value;
        saveSettingsToStorage();
        fetchFeatures();
    }

    function onAddressDisplayShortcutKey() {
        if (!$('#gisAddrDisplay-hn').is(':checked')) {
            $('#gisAddrDisplay-hn').click();
        } else {
            $('#gisAddrDisplay-all').click();
        }
    }

    function onToggleGisLayersShortcutKey() {
        setEnabled(!_settings.enabled);
    }

    function initLayer() {
        const rules = _gisLayers.map(gisLayer => new OpenLayers.Rule({
            filter: new OpenLayers.Filter.Comparison({
                type: OpenLayers.Filter.Comparison.EQUAL_TO,
                property: 'layerID',
                value: gisLayer.id
            }),
            symbolizer: gisLayer.style
        }));

        setFillParcels(_settings.fillParcels);

        const style = new OpenLayers.Style(DEFAULT_STYLE, { rules });
        let existingLayer;
        let uniqueName;

        uniqueName = 'wmeGISLayersDefault';
        existingLayer = W.map.layers.find(l => l.uniqueName === uniqueName); // Note: W.map.getLayerByUniqueName(...) isn't working.
        if (existingLayer) W.map.removeLayer(existingLayer);
        _mapLayer = new OpenLayers.Layer.Vector('GIS Layers - Default', {
            uniqueName,
            styleMap: new OpenLayers.StyleMap(style)
        });

        uniqueName = 'wmeGISLayersRoads';
        existingLayer = W.map.layers.find(l => l.uniqueName === uniqueName); // Note: W.map.getLayerByUniqueName(...) isn't wworking.
        if (existingLayer) W.map.removeLayer(existingLayer);
        _roadLayer = new OpenLayers.Layer.Vector('GIS Layers - Roads', {
            uniqueName,
            styleMap: new OpenLayers.StyleMap(ROAD_STYLE)
        });

        _mapLayer.setVisibility(_settings.enabled);
        _roadLayer.setVisibility(_settings.enabled);

        W.map.addLayers([_roadLayer, _mapLayer]);
    } // END InitLayer

    function initLayersTab() {
        const user = W.loginManager.user.attributes.userName.toLowerCase();
        const states = _.uniq(_gisLayers.map(l => l.state)).filter(st => _settings.selectedStates.includes(st));

        $('#panel-gis-state-layers').empty().append(
            $('<div>', { class: 'controls-container' }).css({ 'padding-top': '0px' }).append(
                $('<input>', { type: 'checkbox', id: 'only-show-applicable-gis-layers' }).change(
                    onOnlyShowApplicableLayersChanged
                ).prop('checked', _settings.onlyShowApplicableLayers),
                $('<label>', { for: 'only-show-applicable-gis-layers' })
                    .css({ 'white-space': 'pre-line' }).text('Only show applicable layers')
            ),
            $('.gis-layers-state-checkbox:checked').length === 0
                ? $('<div>').text('Turn on layer categories in the Settings tab.')
                : states.map(st => $('<fieldset>', {
                    id: `gis-layers-for-${st}`,
                    style: 'border:1px solid silver;padding:4px;border-radius:4px;-webkit-padding-before: 0;'
                }).append(
                    $('<legend>', { style: 'margin-bottom:0px;border-bottom-style:none;width:auto;' })
                        .click(onChevronClick).append(
                            $('<i>', {
                                class: 'fa fa-fw fa-chevron-down',
                                style: 'cursor: pointer;font-size: 12px;margin-right: 4px'
                            }),
                            $('<span>', {
                                style: 'font-size:14px;font-weight:600;text-transform: uppercase; cursor: pointer'
                            }).text(STATES.toFullName(st))
                        ),
                    $('<div>', { id: `${st}_body` }).append(
                        $('<div>').css({ 'font-size': '11px' }).append(
                            $('<span>').append(
                                'Select ',
                                $('<a>', { href: '#' })
                                    .text('All')
                                    .click(onSelectAllClick),
                                ' / ',
                                $('<a>', { href: '#' })
                                    .text('None')
                                    .click(onSelectNoneClick)
                            )
                        ),
                        $('<div>', { class: 'controls-container', style: 'padding-top:0px;' }).append(
                            _gisLayers.filter(l => (l.state === st && (!PRIVATE_LAYERS.hasOwnProperty(l.id)
                                || PRIVATE_LAYERS[l.id].includes(user))))
                                .map(gisLayer => {
                                    const id = `gis-layer-${gisLayer.id}`;
                                    return $('<div>', { class: 'controls-container', id: `${id}-container` })
                                        .css({ 'padding-top': '0px', display: 'block' })
                                        .append(
                                            $('<input>', { type: 'checkbox', id })
                                                .data('layer-id', gisLayer.id)
                                                .change(onGisLayerToggleChanged)
                                                .prop('checked', _settings.visibleLayers.includes(gisLayer.id)),
                                            $('<label>', { for: id, class: 'gis-state-layer-label' })
                                                .css({ 'white-space': 'pre-line' })
                                                .text(`${gisLayer.name}${gisLayer.restrictTo ? ' *' : ''}`)
                                                .attr('title', gisLayer.restrictTo ? `Restricted to: ${gisLayer.restrictTo}` : '')
                                                .contextmenu(evt => {
                                                    evt.preventDefault();
                                                    // TODO - enable the layer if it isn't already.
                                                    // Tried using click function on the evt target, but that didn't work.
                                                    _layerSettingsDialog.gisLayer = gisLayer;
                                                    _layerSettingsDialog.show();
                                                })
                                        );
                                })
                        )
                    )
                ))
        );
    }

    function initSettingsTab() {
        const states = _.uniq(_gisLayers.map(l => l.state));
        const createRadioBtn = (name, value, text, checked) => {
            const id = `${name}-${value}`;
            return [$('<input>', {
                type: 'radio', id, name, value
            }).prop('checked', checked), $('<label>', { for: id }).text(text).css({
                paddingLeft: '15px', marginRight: '4px'
            })];
        };
        $('#panel-gis-layers-settings').empty().append(
            $('<fieldset>', {
                style: 'border:1px solid silver;padding:8px;border-radius:4px;-webkit-padding-before: 0;margin-top:-8px;'
            }).append(
                $('<legend>', {
                    style: 'margin-bottom:0px;border-bottom-style:none;width:auto;'
                }).append($('<span>', {
                    style: 'font-size:14px;font-weight:600;text-transform: uppercase;'
                }).text('Labels')),
                $('<div>', { id: 'labelSettings' }).append(
                    $('<div>', { class: 'controls-container' }).css({ 'padding-top': '2px' }).append(
                        $('<label>', { style: 'font-weight:normal;' }).text('Addresses:'),
                        createRadioBtn('gisAddrDisplay', 'hn', 'HN', _settings.addrLabelDisplay === 'hn'),
                        createRadioBtn('gisAddrDisplay', 'street', 'Street', _settings.addrLabelDisplay === 'street'),
                        createRadioBtn('gisAddrDisplay', 'all', 'Both', _settings.addrLabelDisplay === 'all'),
                        createRadioBtn('gisAddrDisplay', 'none', 'None', _settings.addrLabelDisplay === 'none'),
                        $('<i>', {
                            class: 'waze-tooltip',
                            id: 'gisAddrDisplayInfo',
                            'data-toggle': 'tooltip',
                            style: 'margin-left:8px; font-size:12px',
                            'data-placement': 'bottom',
                            title: `This may not work properly for all layers. Please report issues to ${SCRIPT_AUTHOR}.`
                        }).tooltip()
                    )
                )
            ),
            $('<fieldset>', {
                style: 'border:1px solid silver;padding:8px;border-radius:4px;-webkit-padding-before: 0;'
            }).append(
                $('<legend>', {
                    style: 'margin-bottom:0px;border-bottom-style:none;width:auto;'
                }).append($('<span>', {
                    style: 'font-size:14px;font-weight:600;text-transform: uppercase;'
                }).text('Layer Categories')),
                $('<div>', { id: 'states_body' }).append(
                    $('<div>').css({ 'font-size': '11px' }).append(
                        $('<span>').append(
                            'Select ',
                            $('<a>', { href: '#' }).text('All').click(true, onSelectAllClick),
                            ' / ',
                            $('<a>', { href: '#' }).text('None').click(true, onSelectNoneClick)
                        )
                    ),
                    $('<div>', { class: 'controls-container', style: 'padding-top:0px;' }).append(
                        states.map(st => {
                            const fullName = STATES.toFullName(st);
                            const id = `gis-layer-enable-state-${st}`;
                            return $('<div>', { class: 'controls-container' })
                                .css({ 'padding-top': '0px', display: 'block' })
                                .append(
                                    $('<input>', { type: 'checkbox', id, class: 'gis-layers-state-checkbox' })
                                        .change(st, onStateCheckChanged)
                                        .prop('checked', _settings.selectedStates.includes(st)),
                                    $('<label>', { for: id }).css({ 'white-space': 'pre-line', color: '#777' }).text(fullName)
                                );
                        })
                    )
                )
            )
        );
        $('#panel-gis-layers-settings').append(
            $('<fieldset>', { style: 'border:1px solid silver;padding:8px;border-radius:4px;-webkit-padding-before: 0;' })
                .append(
                    $('<legend>', { style: 'margin-bottom:0px;border-bottom-style:none;width:auto;' })
                        .append(
                            $('<span>', { style: 'font-size:14px;font-weight:600;text-transform: uppercase;' })
                                .text('Appearance')
                        ),
                    $('<div>', { class: 'controls-container' }).css({ 'padding-top': '2px' }).append(
                        $('<input>', { type: 'checkbox', id: 'fill-parcels' })
                            .change(onFillParcelsCheckedChanged)
                            .prop('checked', _settings.fillParcels),
                        $('<label>', { for: 'fill-parcels' }).css({ 'white-space': 'pre-line', color: '#777' }).text('Fill parcels')
                    )
                )
        );
        $('input[name=gisAddrDisplay]').change(onGisAddrDisplayChange);
    }

    async function initTab(firstCall = true) {
        if (firstCall) {
            const { user } = W.loginManager;
            const content = $('<div>').append(
                $('<span>', { style: 'font-size:14px;font-weight:600' }).text('GIS Layers'),
                $('<span>', { style: 'font-size:11px;margin-left:10px;color:#aaa;' }).text(GM_info.script.version),
                // <a href="https://docs.google.com/forms/d/e/1FAIpQLSevPQLz2ohu_LTge9gJ9Nv6PURmCmaSSjq0ayOJpGdRr2xI0g/viewform?usp=pp_url&entry.2116052852=test" target="_blank" style="color: #6290b7;font-size: 12px;margin-left: 8px;" title="Report broken layers, bugs, request new layers, script features">Report an issue</a>
                $('<a>', {
                    href: REQUEST_FORM_URL.replace('{username}', user.attributes.userName),
                    target: '_blank',
                    style: 'color: #6290b7;font-size: 12px;margin-left: 8px;',
                    title: 'Report broken layers, bugs, request new layers, script features'
                }).text('Submit a request'),
                $('<span>', {
                    id: 'gis-layers-refresh',
                    class: 'fa fa-refresh',
                    style: 'float: right;',
                    'data-toggle': 'tooltip',
                    title: 'Pull new layer info from master sheet and refresh all layers.'
                }),
                '<ul class="nav nav-tabs">'
                + '<li class="active"><a data-toggle="tab" href="#panel-gis-state-layers" aria-expanded="true">'
                + 'Layers'
                + '</a></li>'
                + '<li><a data-toggle="tab" href="#panel-gis-layers-settings" aria-expanded="true">'
                + 'Settings'
                + '</a></li> '
                + '</ul>',
                $('<div>', { class: 'tab-content', style: 'padding:8px;padding-top:2px' }).append(
                    $('<div>', { class: 'tab-pane active', id: 'panel-gis-state-layers', style: 'padding: 4px 0px 0px 0px; width: auto' }),
                    $('<div>', { class: 'tab-pane', id: 'panel-gis-layers-settings', style: 'padding: 4px 0px 0px 0px; width: auto' })
                )
            ).html();

            const powerButtonColor = _settings.enabled ? '#00bd00' : '#ccc';
            const labelText = $('<div>').append(
                $('<span>', {
                    class: 'fa fa-power-off',
                    id: 'gis-layers-power-btn',
                    style: `margin-right: 5px;cursor: pointer;color: ${powerButtonColor};font-size: 13px;`,
                    title: 'Toggle GIS Layers'
                }),
                $('<span>', { title: 'GIS Layers' }).text('GIS-L')
            ).html();

            const { tabLabel, tabPane } = W.userscripts.registerSidebarTab('GIS-L');
            tabLabel.innerHTML = labelText;
            tabPane.innerHTML = content;
            // Fix tab content div spacing.
            $(tabPane).parent().css({ width: 'auto', padding: '6px' });

            await W.userscripts.waitForElementConnected(tabPane);
            $('#gis-layers-power-btn').click(evt => {
                evt.stopPropagation();
                setEnabled(!_settings.enabled);
            });
            $('#gis-layers-refresh').click(onRefreshLayersClick);
        }

        initSettingsTab();
        initLayersTab();
    }

    function initGui(firstCall = true) {
        initLayer();

        if (firstCall) {
            initTab(true);

            WazeWrap.Interface.AddLayerCheckbox('Display', 'GIS Layers', _settings.enabled, onLayerCheckboxChanged);
            // W.map.events.register('moveend', null, onMapMove);
            WazeWrap.Events.register('moveend', null, onMapMove);
            showScriptInfoAlert();
        } else {
            initTab(firstCall);
        }
    }

    async function loadSpreadsheetAsync() {
        let data;
        try {
            data = await $.getJSON(`${LAYER_DEF_SPREADSHEET_URL}?${DEC(API_KEY)}`);
        } catch (err) {
            throw new Error(`Spreadsheet call failed. (${err.status}: ${err.statusText})`);
        }
        const [[minVersion], fieldNames, ...layerDefRows] = data.values;
        const REQUIRED_FIELD_NAMES = [
            'state', 'name', 'id', 'counties', 'url', 'where', 'labelFields',
            'processLabel', 'style', 'visibleAtZoom', 'labelsVisibleAtZoom', 'enabled',
            'restrictTo', 'oneTimeAlert'
        ];
        const result = { error: null };
        const checkFieldNames = fldName => fieldNames.includes(fldName);

        if (SCRIPT_VERSION < minVersion) {
            result.error = `Script must be updated to at least version ${
                minVersion} before layer definitions can be loaded.`;
        } else if (fieldNames.length < REQUIRED_FIELD_NAMES.length) {
            result.error = `Expected ${
                REQUIRED_FIELD_NAMES.length} columns in layer definition data.  Spreadsheet returned ${
                fieldNames.length}.`;
        } else if (!REQUIRED_FIELD_NAMES.every(fldName => checkFieldNames(fldName))) {
            result.error = 'Script expected to see the following column names in the layer '
                + `definition spreadsheet:\n${REQUIRED_FIELD_NAMES.join(', ')}\n`
                + `But the spreadsheet returned these:\n${fieldNames.join(', ')}`;
        }
        if (!result.error) {
            layerDefRows.filter(row => row.length).forEach(layerDefRow => {
                const layerDef = { enabled: '0' };
                fieldNames.forEach((fldName, fldIdx) => {
                    let value = layerDefRow[fldIdx];
                    if (value !== undefined && value.trim().length > 0) {
                        value = value.trim();
                        if (fldName === 'counties' || fldName === 'labelFields') {
                            value = value.split(',').map(item => item.trim());
                        } else if (fldName === 'processLabel') {
                            try {
                                value = ESTreeProcessor.compile(`function __$proc(){${value}} __$proc();`);
                            } catch (ex) {
                                layerDef.labelProcessingError = true;
                                logError(`Error loading label processing function for layer "${layerDef.id}".`);
                                logDebug(ex);
                            }
                        } else if (fldName === 'style') {
                            layerDef.isRoadLayer = value === 'roads';
                            if (LAYER_STYLES.hasOwnProperty(value)) {
                                value = LAYER_STYLES[value];
                            } else if (!layerDef.isRoadLayer) {
                                // If style is not defined, try to read in as JSON (custom style)
                                try {
                                    value = JSON.parse(value);
                                } catch (ex) {
                                    // ignore error
                                }
                            }
                        } else if (fldName === 'state') {
                            value = value ? value.toUpperCase() : value;
                        } else if (fldName === 'restrictTo') {
                            try {
                                const { user } = W.loginManager;
                                const values = value.split(',').map(v => v.trim().toLowerCase());
                                layerDef.notAllowed = !values.some(entry => {
                                    const rankMatch = entry.match(/^r(\d)(\+am)?$/);
                                    if (rankMatch) {
                                        if (rankMatch[1] <= (user.attributes.rank + 1) && (!rankMatch[2] || user.attributes.isAreaManager)) {
                                            return true;
                                        }
                                    } else if (entry === 'am' && user.attributes.isAreaManager) {
                                        return true;
                                    } else if (entry === user.attributes.userName.toLowerCase()) {
                                        return true;
                                    }
                                    return false;
                                });
                            } catch (ex) {
                                logError(ex);
                            }
                        }
                        layerDef[fldName] = value;
                    } else if (fldName === 'labelFields') {
                        layerDef[fldName] = [''];
                    }
                });
                const enabled = layerDef.enabled && !['0', 'false', 'no', 'n'].includes(layerDef.enabled.toString().trim().toLowerCase());
                if (!layerDef.notAllowed && (enabled || layerDef.restrictTo)) {
                    _gisLayers.push(layerDef);
                }
            });
        }

        return result;
    }

    function loadScriptUpdateMonitor() {
        try {
            const updateMonitor = new WazeWrap.Alerts.ScriptUpdateMonitor(SCRIPT_NAME, SCRIPT_VERSION, DOWNLOAD_URL, GM_xmlhttpRequest);
            updateMonitor.start();
        } catch (ex) {
            // Report, but don't stop if ScriptUpdateMonitor fails.
            logError(ex);
        }
    }

    async function init(firstCall = true) {
        _gisLayers = [];
        if (firstCall) {
            labelProcessingGlobalVariables.W = W;
            loadScriptUpdateMonitor();
            initRoadStyle();
            loadSettingsFromStorage();
            installPathFollowingLabels();
            new WazeWrap.Interface.Shortcut(
                'GisLayersAddrDisplay',
                'Toggle HN-only address labels (GIS Layers)',
                'layers',
                'layersToggleGisAddressLabelDisplay',
                _settings.toggleHnsOnlyShortcut,
                onAddressDisplayShortcutKey,
                null
            ).add();
            new WazeWrap.Interface.Shortcut(
                'GisLayersToggleEnabled',
                'Toggle display of GIS Layers',
                'layers',
                'layersToggleGisLayersEnabled',
                _settings.toggleEnabledShortcut,
                onToggleGisLayersShortcutKey,
                null
            ).add();
            window.addEventListener('beforeunload', saveSettingsToStorage, false);
            _layerSettingsDialog = new LayerSettingsDialog();
        }
        const t0 = performance.now();
        try {
            const result = await loadSpreadsheetAsync();
            if (result.error) {
                logError(result.error);
                return;
            }
            _layerRefinements.forEach(layerRefinement => {
                const layerDef = _gisLayers.find(layerDef2 => layerDef2.id === layerRefinement.id);
                if (layerDef) {
                    Object.keys(layerRefinement).forEach(fldName => {
                        const value = layerRefinement[fldName];
                        if (fldName !== 'id' && layerDef.hasOwnProperty(fldName)) {
                            logDebug(`The "${fldName}" property of layer "${
                                layerDef.id}" has a value hardcoded in the script, and also defined in the spreadsheet.`
                                + ' The spreadsheet value takes precedence.');
                        } else if (value) layerDef[fldName] = value;
                    });
                } else {
                    logDebug(`Refined layer "${layerRefinement.id}" does not have a corresponding layer defined`
                        + ' in the spreadsheet.  It can probably be removed from the script.');
                }
            });
            logDebug(`Loaded ${_gisLayers.length} layer definitions in ${Math.round(performance.now() - t0)} ms.`);
            initGui(firstCall);
            fetchFeatures();
            $('#gis-layers-refresh').removeClass('fa-spin').css({ cursor: 'pointer' });
            logDebug('Initialized.');
        } catch (err) {
            logError(err);
        }
    }

    function onWmeReady() {
        if (WazeWrap && WazeWrap.Ready) {
            logDebug('Initializing...');
            init();
        } else {
            setTimeout(onWmeReady, 100);
        }
    }

    function bootstrap() {
        if (typeof W === 'object' && W.userscripts?.state.isReady) {
            onWmeReady();
        } else {
            document.addEventListener('wme-ready', onWmeReady, { once: true });
        }
    }

    bootstrap();

    /*eslint-disable*/
    function installPathFollowingLabels() {
        // Copyright (c) 2015 by Jean-Marc.Viglino [at]ign.fr
        // Dual-licensed under the CeCILL-B Licence (http://www.cecill.info/)
        // and the Beerware license (http://en.wikipedia.org/wiki/Beerware),
        // feel free to use and abuse it in your projects (the code, not the beer ;-).
        //
        //* Overwrite the SVG function to allow text along a path
        //*	setStyle function
        //*
        //*	Add new options to the Openlayers.Style

        // pathLabel: {String} Label to draw on the path
        // pathLabelXOffset: {String} Offset along the line to start drawing text in pixel or %, default: "50%"
        // pathLabelYOffset: {Number} Distance of the line to draw the text
        // pathLabelCurve: {String} Smooth the line the label is drawn on (empty string for no)
        // pathLabelReadable: {String} Make the label readable (empty string for no)

        // *	Extra standard values : all label and text values


        //  *
        //  * Method: removeChildById
        //  * Remove child in a node.
        //  *

        function removeChildById(node, id) {
            if (node.querySelector) {
                var c = node.querySelector('#' + id);
                if (c) node.removeChild(c);
                return;
            }
            // For old browsers
            var c = node.childNodes;
            if (c) for (var i = 0; i < c.length; i++) {
                if (c[i].id === id) {
                    node.removeChild(c[i]);
                    return;
                }
            }
        }


        //  *
        //  * Method: setStyle
        //  * Use to set all the style attributes to a SVG node.
        //  *
        //  * Takes care to adjust stroke width and point radius to be
        //  * resolution-relative
        //  *
        //  * Parameters:
        //  * node - {SVGDomElement} An SVG element to decorate
        //  * style - {Object}
        //  * options - {Object} Currently supported options include
        //  *                              'isFilled' {Boolean} and
        //  *                              'isStroked' {Boolean}

        var setStyle = OpenLayers.Renderer.SVG.prototype.setStyle;
        OpenLayers.Renderer.SVG.LABEL_STARTOFFSET = { 'l': '0%', 'r': '100%', 'm': '50%' };

        OpenLayers.Renderer.SVG.prototype.pathText = function (node, style, suffix) {
            var label = this.nodeFactory(null, 'text');
            label.setAttribute('id', node._featureId + '_' + suffix);
            if (style.fontColor) label.setAttributeNS(null, 'fill', style.fontColor);
            if (style.fontStrokeColor) label.setAttributeNS(null, 'stroke', style.fontStrokeColor);
            if (style.fontStrokeWidth) label.setAttributeNS(null, 'stroke-width', style.fontStrokeWidth);
            if (style.fontOpacity) label.setAttributeNS(null, 'opacity', style.fontOpacity);
            if (style.fontFamily) label.setAttributeNS(null, 'font-family', style.fontFamily);
            if (style.fontSize) label.setAttributeNS(null, 'font-size', style.fontSize);
            if (style.fontWeight) label.setAttributeNS(null, 'font-weight', style.fontWeight);
            if (style.fontStyle) label.setAttributeNS(null, 'font-style', style.fontStyle);
            if (style.labelSelect === true) {
                label.setAttributeNS(null, 'pointer-events', 'visible');
                label._featureId = node._featureId;
            } else {
                label.setAttributeNS(null, 'pointer-events', 'none');
            }

            function getpath(pathStr, readeable) {
                var npath = pathStr.split(',');
                var pts = [];
                if (!readeable || Number(npath[0]) - Number(npath[npath.length - 2]) < 0) {
                    while (npath.length) pts.push({ x: Number(npath.shift()), y: Number(npath.shift()) });
                } else {
                    while (npath.length) pts.unshift({ x: Number(npath.shift()), y: Number(npath.shift()) });
                }
                return pts;
            }

            var path = this.nodeFactory(null, 'path');
            var tpid = node._featureId + '_t' + suffix;
            var tpath = node.getAttribute('points');
            if (style.pathLabelCurve) {
                var pts = getpath(tpath, style.pathLabelReadable);
                var p = pts[0].x + ' ' + pts[0].y;
                var dx, dy, s1, s2;
                dx = (pts[0].x - pts[1].x) / 4;
                dy = (pts[0].y - pts[1].y) / 4;
                for (var i = 1; i < pts.length - 1; i++) {
                    p += ' C ' + (pts[i - 1].x - dx) + ' ' + (pts[i - 1].y - dy);
                    dx = (pts[i - 1].x - pts[i + 1].x) / 4;
                    dy = (pts[i - 1].y - pts[i + 1].y) / 4;
                    s1 = Math.sqrt(Math.pow(pts[i - 1].x - pts[i].x, 2) + Math.pow(pts[i - 1].y - pts[i].y, 2));
                    s2 = Math.sqrt(Math.pow(pts[i + 1].x - pts[i].x, 2) + Math.pow(pts[i + 1].y - pts[i].y, 2));
                    p += ' ' + (pts[i].x + s1 * dx / s2) + ' ' + (pts[i].y + s1 * dy / s2);
                    dx *= s2 / s1;
                    dy *= s2 / s1;
                    p += ' ' + pts[i].x + ' ' + pts[i].y;
                }
                p += ' C ' + (pts[i - 1].x - dx) + ' ' + (pts[i - 1].y - dy);
                dx = (pts[i - 1].x - pts[i].x) / 4;
                dy = (pts[i - 1].y - pts[i].y) / 4;
                p += ' ' + (pts[i].x + dx) + ' ' + (pts[i].y + dy);
                p += ' ' + pts[i].x + ' ' + pts[i].y;

                path.setAttribute('d', 'M ' + p);
            } else {
                if (style.pathLabelReadable) {
                    var pts = getpath(tpath, style.pathLabelReadable);
                    var p = '';
                    for (var i = 0; i < pts.length; i++) p += ' ' + pts[i].x + ' ' + pts[i].y;
                    path.setAttribute('d', 'M ' + p);
                } else path.setAttribute('d', 'M ' + tpath);
            }
            path.setAttribute('id', tpid);

            var defs = this.createDefs();
            removeChildById(defs, tpid);
            defs.appendChild(path);

            var textPath = this.nodeFactory(null, 'textPath');
            textPath.setAttributeNS('http://www.w3.org/1999/xlink', 'xlink:href', '#' + tpid);
            var align = style.labelAlign || OpenLayers.Renderer.defaultSymbolizer.labelAlign;
            label.setAttributeNS(null, 'text-anchor', OpenLayers.Renderer.SVG.LABEL_ALIGN[align[0]] || 'middle');
            textPath.setAttribute('startOffset', style.pathLabelXOffset || OpenLayers.Renderer.SVG.LABEL_STARTOFFSET[align[0]] || '50%');
            label.setAttributeNS(null, 'dominant-baseline', OpenLayers.Renderer.SVG.LABEL_ALIGN[align[1]] || 'central');
            if (style.pathLabelYOffset) label.setAttribute('dy', style.pathLabelYOffset);
            //textPath.setAttribute('method','stretch');
            //textPath.setAttribute('spacing','auto');

            textPath.textContent = style.pathLabel;
            label.appendChild(textPath);

            removeChildById(this.textRoot, node._featureId + '_' + suffix);
            this.textRoot.appendChild(label);
        };

        OpenLayers.Renderer.SVG.prototype.setStyle = function (node, style, options) {
            if (node._geometryClass === 'OpenLayers.Geometry.LineString' && style.pathLabel) {
                if (node._geometryClass === 'OpenLayers.Geometry.LineString' && style.pathLabel) {
                    var drawOutline = (!!style.labelOutlineWidth);
                    // First draw text in halo color and size and overlay the
                    // normal text afterwards
                    if (drawOutline) {
                        var outlineStyle = OpenLayers.Util.extend({}, style);
                        outlineStyle.fontColor = outlineStyle.labelOutlineColor;
                        outlineStyle.fontStrokeColor = outlineStyle.labelOutlineColor;
                        outlineStyle.fontStrokeWidth = style.labelOutlineWidth;
                        if (style.labelOutlineOpacity) outlineStyle.fontOpacity = style.labelOutlineOpacity;
                        delete outlineStyle.labelOutlineWidth;
                        this.pathText(node, outlineStyle, 'txtpath0');
                    }
                    this.pathText(node, style, 'txtpath');
                    setStyle.apply(this, arguments);
                }
            } else setStyle.apply(this, arguments);
            return node;
        };

        //  *
        //  * Method: drawGeometry
        //  * Remove the textpath if no geometry is drawn.
        //  *
        //  * Parameters:
        //  * geometry - {<OpenLayers.Geometry>}
        //  * style - {Object}
        //  * featureId - {String}
        //  *
        //  * Returns:
        //  * {Boolean} true if the geometry has been drawn completely; null if
        //  *     incomplete; false otherwise

        var drawGeometry = OpenLayers.Renderer.SVG.prototype.drawGeometry;
        OpenLayers.Renderer.SVG.prototype.drawGeometry = function (geometry, style, id) {
            var rendered = drawGeometry.apply(this, arguments);
            if (rendered === false) {
                removeChildById(this.textRoot, id + '_txtpath');
                removeChildById(this.textRoot, id + '_txtpath0');
            }
            return rendered;
        };

        // *
        // * Method: eraseGeometry
        // * Erase a geometry from the renderer. In the case of a multi-geometry,
        // *     we cycle through and recurse on ourselves. Otherwise, we look for a
        // *     node with the geometry.id, destroy its geometry, and remove it from
        // *     the DOM.
        // *
        // * Parameters:
        // * geometry - {<OpenLayers.Geometry>}
        // * featureId - {String}

        var eraseGeometry = OpenLayers.Renderer.SVG.prototype.eraseGeometry;
        OpenLayers.Renderer.SVG.prototype.eraseGeometry = function (geometry, featureId) {
            eraseGeometry.apply(this, arguments);
            removeChildById(this.textRoot, featureId + '_txtpath');
            removeChildById(this.textRoot, featureId + '_txtpath0');
        };

    }
})();