191 lines
6.0 KiB
HTML
191 lines
6.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>Error handling | CARTO</title>
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<meta name="viewport" content="initial-scale=1.0">
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<meta charset="utf-8">
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<link href="https://fonts.googleapis.com/css?family=Montserrat:400,600,700|Open+Sans:300,400,600" rel="stylesheet">
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<link href='https://fonts.googleapis.com/css?family=Open+Sans:300,400,600,700' rel='stylesheet' type='text/css'>
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<!-- Include Leaflet -->
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<script src="https://unpkg.com/leaflet/dist/leaflet.js"></script>
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<link href="https://unpkg.com/leaflet/dist/leaflet.css" rel="stylesheet">
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<!-- Include CARTO.js -->
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<script src="../../../dist/public/carto.js"></script>
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<link href="../style.css" rel="stylesheet">
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</head>
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<body>
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<div id="map"></div>
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<aside class="toolbox">
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<div class="box">
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<header>
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<h1>Error handling</h1>
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<button class="github-logo js-source-link"></button>
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</header>
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<section>
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<p class="description open-sans">Handle common errors in maps.</p>
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<div class="separator"></div>
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<section class="usage">
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<header>USAGE</header>
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<p class="open-sans">In this example we handle the client error while calling the `addLayer` funciton.</p>
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<p class="open-sans">See `refreshLayer` function in the source code for an example on how to handle Promise errors.</p>
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</section>
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<div id="controls">
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<div id="info"><p class="mt-16 open-sans"></p></div>
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</div>
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</section>
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<footer class="js-footer"></footer>
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</div>
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<div class="box widget">
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<h2 class="h2">DATASET</h2>
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<textarea id="dataset-value" rows=2></textarea>
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<button id="dataset-button" class="button" onclick="updateDataset()">SET WRONG DATASET</button>
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</div>
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<div class="box widget">
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<h2 class="h2">STYLE</h2>
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<textarea id="style-value" rows="3"></textarea>
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<button id="style-button" class="button" onclick="updateStyle()">UPDATE STYLE</button>
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</div>
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</aside>
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<script>
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const map = L.map('map').setView([30, 0], 3);
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map.scrollWheelZoom.disable();
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L.tileLayer('https://{s}.basemaps.cartocdn.com/rastertiles/voyager_nolabels/{z}/{x}/{y}.png', {
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maxZoom: 18
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}).addTo(map);
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const client = new carto.Client({
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apiKey: 'default_public',
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username: 'cartojs-test'
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});
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// State
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const state = {
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isDatasetValid: true,
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isStyleValid: true,
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errorMessage: '',
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updating: false
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};
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// Datasets
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const validDataset = 'ne_10m_populated_places_simple';
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const wrongDataset = 'wrong_dataset';
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// Style
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const validStyle = '#layer { marker-fill: red; }';
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const wrongStyle = '#layer { marker-fill: wrong-color; }';
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let source = new carto.source.Dataset(validDataset);
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let style = new carto.style.CartoCSS(validStyle);
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let layer = new carto.layer.Layer(source, style);
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client.addLayer(layer);
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client.getLeafletLayer().addTo(map);
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updateUI();
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function refreshLayer (layer) {
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client.addLayer(layer)
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.then(function () {
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state.errorMessage = '';
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state.updating = false;
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updateUI();
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})
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.catch(function (error) {
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state.errorMessage = error.message;
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state.updating = false;
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updateUI();
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});
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}
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function updateDataset() {
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client.removeLayer(layer);
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state.isDatasetValid = !state.isDatasetValid;
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state.updating = true;
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const dataset = state.isDatasetValid
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? validDataset
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: wrongDataset;
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updateUI();
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source = new carto.source.Dataset(dataset);
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layer = new carto.layer.Layer(source, style);
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refreshLayer(layer);
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}
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function updateStyle() {
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client.removeLayer(layer);
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state.isStyleValid = !state.isStyleValid;
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state.updating = true;
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const styleContent = state.isStyleValid
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? validStyle
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: wrongStyle;
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updateUI();
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style = new carto.style.CartoCSS(styleContent);
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layer = new carto.layer.Layer(source, style);
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refreshLayer(layer);
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}
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function updateUI () {
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const datasetValueEl = document.getElementById('dataset-value');
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const styleValueEl = document.getElementById('style-value');
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const datasetButtonEl = document.getElementById('dataset-button');
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const styleButtonEl = document.getElementById('style-button');
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const panelEl = document.querySelector('#info p');
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datasetValueEl.value = state.isDatasetValid
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? validDataset
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: wrongDataset;
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styleValueEl.value = state.isStyleValid
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? validStyle
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: wrongStyle;
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datasetButtonEl.textContent = state.isDatasetValid
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? 'Set wrong dataset'
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: 'Revert to a valid dataset';
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styleButtonEl.textContent = state.isStyleValid
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? 'Set wrong style'
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: 'Revert to a valid style';
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panelEl.textContent = state.updating
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? 'Updating...'
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: state.errorMessage
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? state.errorMessage
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: 'Everything OK';
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if (state.updating) {
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panelEl.classList.remove('bg-red');
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panelEl.classList.remove('bg-white');
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panelEl.classList.add('bg-orange');
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panelEl.classList.add('p-8');
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panelEl.classList.add('text-white');
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} else if (state.errorMessage) {
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panelEl.classList.add('bg-red');
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panelEl.classList.remove('bg-white');
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panelEl.classList.remove('bg-orange');
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panelEl.classList.add('p-8');
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panelEl.classList.add('text-white');
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} else {
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panelEl.classList.add('bg-white');
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panelEl.classList.remove('bg-red');
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panelEl.classList.remove('bg-orange');
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panelEl.classList.remove('p-8');
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panelEl.classList.remove('text-white');
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}
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}
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</script>
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</body>
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</html>
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