|
| 1 | +/* global L */ |
| 2 | +//= require leaflet |
| 3 | +//= require views/landing_page/map/data/cdc.geojson.js |
| 4 | +//= require views/landing_page/map/data/hub.geojson.js |
| 5 | +//= require views/landing_page/map/data/icb.geojson.js |
| 6 | +//= require views/landing_page/map/data/lookup.json.js |
| 7 | + |
| 8 | +window.addEventListener('DOMContentLoaded', function () { |
| 9 | + const mapElement = document.getElementById('map') |
| 10 | + if (!mapElement) { |
| 11 | + return |
| 12 | + } |
| 13 | + |
| 14 | + const apiKey = mapElement.getAttribute('data-api-key') |
| 15 | + |
| 16 | + if (!apiKey) { |
| 17 | + const warning = document.querySelector('#api-warning') |
| 18 | + warning.innerText = "Error: Map API key not found." |
| 19 | + return |
| 20 | + } |
| 21 | + |
| 22 | + // Initialize the map. |
| 23 | + const mapOptions = { |
| 24 | + minZoom: 7, |
| 25 | + maxZoom: 16, |
| 26 | + center: [51.063, -1.319], |
| 27 | + zoom: 8, |
| 28 | + maxBounds: [ |
| 29 | + [49.528423, -10.76418], |
| 30 | + [61.331151, 1.9134116] |
| 31 | + ], |
| 32 | + attributionControl: false |
| 33 | + } |
| 34 | + |
| 35 | + const map = L.map('map', mapOptions) |
| 36 | + |
| 37 | + // Load and display ZXY tile layer on the map. |
| 38 | + L.tileLayer('https://api.os.uk/maps/raster/v1/zxy/Light_3857/{z}/{x}/{y}.png?key=' + apiKey, { |
| 39 | + attribution: `Contains OS data © Crown copyright and database rights ${new Date().getFullYear()}`, |
| 40 | + maxZoom: 20 |
| 41 | + }).addTo(map) |
| 42 | + |
| 43 | + // window.GOVUK.icbGeojson and similar are declared in data files in views/missions/data |
| 44 | + |
| 45 | + // Takes the icbGeoJSON and creates an object that looks like |
| 46 | + // {E1234567: "A UK Region", E1234568: "Another UK Region"} etc. |
| 47 | + // E numbers are region codes. |
| 48 | + // These are the more specific clickable UK 'regions' on the map |
| 49 | + const icbLookup = window.GOVUK.icbGeojson.features.reduce((obj, v) => ({ ...obj, [v.properties.ICB23CD]: v.properties.ICB23NM }), {}) |
| 50 | + |
| 51 | + // Creates an object with large UK regions e.g. { E12345678: "South East", } |
| 52 | + const nhsLookup = window.GOVUK.icbGeojson.features.reduce((obj, v) => ({ ...obj, [v.properties.NHSER22CD]: v.properties.NHSER22NM }), {}) |
| 53 | + |
| 54 | + // Colours for each large UK region |
| 55 | + const colorLookup = { |
| 56 | + E40000003: '#FF1F5B', |
| 57 | + E40000005: '#00CD6C', |
| 58 | + E40000006: '#009ADE', |
| 59 | + E40000007: '#AF58BA', |
| 60 | + E40000010: '#FFC61E', |
| 61 | + E40000011: '#F28522', |
| 62 | + E40000012: '#A0B1BA' |
| 63 | + } |
| 64 | + |
| 65 | + // Add the DHSC Community Diagnostic Centre (CDC) locations. |
| 66 | + // AKA the clickable black circles on the map |
| 67 | + map.createPane('cdc') |
| 68 | + map.getPane('cdc').style.zIndex = 650 |
| 69 | + |
| 70 | + const cdcCustomOverlay = L.geoJSON(window.GOVUK.cdcGeojson, { |
| 71 | + onEachFeature: bindPopup, |
| 72 | + pointToLayer: function (feature, latlng) { |
| 73 | + return L.circleMarker(latlng) |
| 74 | + }, |
| 75 | + style: function (feature) { |
| 76 | + return { |
| 77 | + color: '#fff', |
| 78 | + fillColor: '#000', |
| 79 | + fillOpacity: 1, |
| 80 | + radius: 5, |
| 81 | + weight: 2, |
| 82 | + pane: 'cdc' |
| 83 | + } |
| 84 | + } |
| 85 | + }).addTo(map) |
| 86 | + const cdcOverlay = cdcCustomOverlay |
| 87 | + |
| 88 | + // Add the DHSC surgical hub locations. |
| 89 | + // AKA the clickable white circles on the map |
| 90 | + map.createPane('hub') |
| 91 | + map.getPane('hub').style.zIndex = 651 |
| 92 | + |
| 93 | + const hubCustomOverlay = L.geoJSON(window.GOVUK.hubGeojson, { |
| 94 | + onEachFeature: bindPopup, |
| 95 | + pointToLayer: function (feature, latlng) { |
| 96 | + return L.circleMarker(latlng) |
| 97 | + }, |
| 98 | + style: function (feature) { |
| 99 | + return { |
| 100 | + color: '#000', |
| 101 | + fillColor: '#fff', |
| 102 | + fillOpacity: 1, |
| 103 | + radius: 4, |
| 104 | + weight: 1, |
| 105 | + pane: 'hub' |
| 106 | + } |
| 107 | + } |
| 108 | + }).addTo(map) |
| 109 | + const hubOverlay = hubCustomOverlay |
| 110 | + |
| 111 | + // Generate CDC and surgical hub counts per ICB boundaries. |
| 112 | + const icbCdcCount = cdcOverlay.toGeoJSON().features.reduce(function (obj, v) { |
| 113 | + obj[v.properties.ICS_ICB] = (obj[v.properties.ICS_ICB] || 0) + 1 |
| 114 | + return obj |
| 115 | + }, {}) |
| 116 | + |
| 117 | + const icbCdcIsOpenCount = cdcOverlay.toGeoJSON().features |
| 118 | + .filter((key, index) => key.properties.isOpen === 'Yes') |
| 119 | + .reduce((obj, v) => { |
| 120 | + obj[v.properties.icbCode] = (obj[v.properties.icbCode] || 0) + 1 |
| 121 | + return obj |
| 122 | + }, {}) |
| 123 | + |
| 124 | + const icbCdcIsFullOpenCount = cdcOverlay.toGeoJSON().features |
| 125 | + .filter((key, index) => key.properties.isOpen12_7 === 'Yes') |
| 126 | + .reduce((obj, v) => { |
| 127 | + obj[v.properties.icbCode] = (obj[v.properties.icbCode] || 0) + 1 |
| 128 | + return obj |
| 129 | + }, {}) |
| 130 | + |
| 131 | + const icbHubCount = hubOverlay.toGeoJSON().features.reduce(function (obj, v) { |
| 132 | + obj[v.properties.ICS_ICB] = (obj[v.properties.ICS_ICB] || 0) + 1 |
| 133 | + return obj |
| 134 | + }, {}) |
| 135 | + |
| 136 | + const icbHubIsOpenCount = hubOverlay.toGeoJSON().features |
| 137 | + .filter((key, index) => key.properties.isOpen === 'Yes') |
| 138 | + .reduce((obj, v) => { |
| 139 | + obj[v.properties.icbCode] = (obj[v.properties.icbCode] || 0) + 1 |
| 140 | + return obj |
| 141 | + }, {}) |
| 142 | + |
| 143 | + window.GOVUK.icbGeojson.features.forEach((element) => { |
| 144 | + element.properties.cdcCount = icbCdcCount[element.properties.ICB23CD] || 0 |
| 145 | + element.properties.cdcOpen = icbCdcIsOpenCount[element.properties.ICB23CD] || 0 |
| 146 | + element.properties.cdcFullOpen = icbCdcIsFullOpenCount[element.properties.ICB23CD] || 0 |
| 147 | + element.properties.hubCount = icbHubCount[element.properties.ICB23CD] || 0 |
| 148 | + element.properties.hubOpen = icbHubIsOpenCount[element.properties.ICB23CD] || 0 |
| 149 | + }) |
| 150 | + |
| 151 | + // Add the Integrated Care Board (IBC) boundaries. (i.e. the UK sub-regions) |
| 152 | + map.createPane('icb') |
| 153 | + map.getPane('icb').style.zIndex = 450 |
| 154 | + |
| 155 | + const icb = L.geoJson(window.GOVUK.icbGeojson, { |
| 156 | + onEachFeature: bindPopup, |
| 157 | + style: function (feature) { |
| 158 | + return { |
| 159 | + color: '#fff', |
| 160 | + fillColor: colorLookup[feature.properties.NHSER22CD], |
| 161 | + fillOpacity: 0.5, |
| 162 | + weight: 1, |
| 163 | + pane: 'icb' |
| 164 | + } |
| 165 | + } |
| 166 | + }).addTo(map) |
| 167 | + |
| 168 | + // Rough code to demonstrate filters. |
| 169 | + |
| 170 | + const layers = [icb, hubOverlay, cdcOverlay] |
| 171 | + for (let i = 0; i < layers.length; i++) { |
| 172 | + const checkbox = document.querySelector(`#checkbox${i + 1}`) |
| 173 | + const mapLayer = layers[i] |
| 174 | + checkbox.addEventListener('click', function () { |
| 175 | + if (map.hasLayer(mapLayer)) { |
| 176 | + map.removeLayer(mapLayer) |
| 177 | + } else { |
| 178 | + map.addLayer(mapLayer) |
| 179 | + } |
| 180 | + }) |
| 181 | + } |
| 182 | + |
| 183 | + // Binds a popup to the layer with the passed content and sets up the necessary event listeners. |
| 184 | + // I.e. creates the popups that appear when you click on a circle or click on a region |
| 185 | + function bindPopup (feature, layer) { |
| 186 | + let properties = layer.feature.properties |
| 187 | + properties = (({ ICB23CD, NHSER22CD, ...o }) => o)(properties) |
| 188 | + |
| 189 | + const propLookup = { |
| 190 | + nhsCode: 'nhsName', |
| 191 | + icbCode: 'icbName' |
| 192 | + } |
| 193 | + |
| 194 | + const table = document.createElement('table') |
| 195 | + table.id = 'popup-table' |
| 196 | + |
| 197 | + const popupHeading = document.createElement('h1') |
| 198 | + popupHeading.classList.add('govuk-heading') |
| 199 | + popupHeading.classList.add('govuk-heading-m') |
| 200 | + let popupSubheading = '' |
| 201 | + |
| 202 | + // When you click on a circle, this popup will show up. |
| 203 | + if (layer.feature.geometry.type === 'Point') { |
| 204 | + popupHeading.innerText = properties.name |
| 205 | + let tableRow |
| 206 | + for (const i in properties) { |
| 207 | + if (i !== 'name') { |
| 208 | + const property = /E[\d]+/.test(properties[i]) ? i === 'nhsCode' ? nhsLookup[properties[i]] : icbLookup[properties[i]] : properties[i] |
| 209 | + tableRow = document.createElement('tr') |
| 210 | + const tableDataLabel = document.createElement('td') |
| 211 | + tableDataLabel.innerText = propLookup[i] || i |
| 212 | + const tableDataValue = document.createElement('td') |
| 213 | + tableDataValue.innerText = property |
| 214 | + |
| 215 | + tableRow.appendChild(tableDataLabel) |
| 216 | + tableRow.appendChild(tableDataValue) |
| 217 | + table.appendChild(tableRow) |
| 218 | + } |
| 219 | + } |
| 220 | + } else { |
| 221 | + // When you click on a region, this popup will show up. |
| 222 | + popupHeading.innerText = `${properties.ICB23NM} Integrated Care Board` |
| 223 | + popupSubheading = document.createElement('h2') |
| 224 | + popupSubheading.classList.add('govuk-heading') |
| 225 | + popupSubheading.classList.add('govuk-heading-s') |
| 226 | + popupSubheading.innerText = `${properties.NHSER22NM} NHS Region` |
| 227 | + |
| 228 | + const tableHeadingsRow = document.createElement('tr') |
| 229 | + const headings = [' ', 'Total', 'Open', 'Open 12/7'] |
| 230 | + |
| 231 | + for (const heading of headings) { |
| 232 | + const tableHeading = document.createElement('th') |
| 233 | + tableHeading.innerHTML = heading |
| 234 | + tableHeadingsRow.appendChild(tableHeading) |
| 235 | + } |
| 236 | + |
| 237 | + const tableCdcRow = document.createElement('tr') |
| 238 | + const tableCdcData = ['CDCs', properties.cdcCount, properties.cdcOpen, properties.cdcFullOpen] |
| 239 | + for (const cdcData of tableCdcData) { |
| 240 | + const tableData = document.createElement('td') |
| 241 | + tableData.innerText = cdcData |
| 242 | + tableCdcRow.appendChild(tableData) |
| 243 | + } |
| 244 | + |
| 245 | + const tableHubRow = document.createElement('tr') |
| 246 | + const tableHubData = ['Surgical Hubs', properties.hubCount, properties.hubOpen, 'n/a'] |
| 247 | + for (const hubData of tableHubData) { |
| 248 | + const tableData = document.createElement('td') |
| 249 | + tableData.innerText = hubData |
| 250 | + tableHubRow.appendChild(tableData) |
| 251 | + } |
| 252 | + |
| 253 | + table.appendChild(tableHeadingsRow) |
| 254 | + table.appendChild(tableCdcRow) |
| 255 | + table.appendChild(tableHubRow) |
| 256 | + } |
| 257 | + |
| 258 | + // Add the generated DOM elements above to a container and append it to the popup |
| 259 | + const tableContainer = document.createElement('div') |
| 260 | + tableContainer.appendChild(popupHeading) |
| 261 | + |
| 262 | + if (popupSubheading) { |
| 263 | + tableContainer.appendChild(popupSubheading) |
| 264 | + } |
| 265 | + |
| 266 | + tableContainer.appendChild(table) |
| 267 | + |
| 268 | + const popup = layer.bindPopup(tableContainer) |
| 269 | + const onStyle = layer.feature.geometry.type === 'Point' ? { radius: Math.ceil(layer.options.radius * 1.2) } : { fillOpacity: layer.options.fillOpacity + 0.3 } |
| 270 | + const offStyle = layer.feature.geometry.type === 'Point' ? { radius: layer.options.radius } : { fillOpacity: layer.options.fillOpacity } |
| 271 | + popup.on('popupopen', (e) => { e.target.setStyle(onStyle) }) |
| 272 | + popup.on('popupclose', (e) => { e.target.setStyle(offStyle) }) |
| 273 | + } |
| 274 | +}) |
0 commit comments