130 lines
3 KiB
JavaScript
130 lines
3 KiB
JavaScript
function initializeBrowse(map) {
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var browseBounds;
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var selectedLayer;
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var dataLayer = map.dataLayer;
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dataLayer.setStyle({
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way: {
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weight: 3,
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color: "#000000",
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opacity: 0.4
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},
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area: {
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weight: 3,
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color: "#ff0000"
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},
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node: {
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color: "#00ff00"
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}
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});
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dataLayer.isWayArea = function () {
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return false;
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};
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dataLayer.on("click", function (e) {
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onSelect(e.layer);
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});
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map.on('layeradd', function (e) {
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if (e.layer === dataLayer) {
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map.on("moveend", updateData);
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updateData();
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}
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});
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map.on('layerremove', function (e) {
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if (e.layer === dataLayer) {
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map.off("moveend", updateData);
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$('#browse_status').empty();
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}
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});
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function updateData() {
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var bounds = map.getBounds();
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if (!browseBounds || !browseBounds.contains(bounds)) {
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getData();
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}
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}
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function displayFeatureWarning(count, limit, add, cancel) {
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$('#browse_status').html(
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$("<p class='warning'></p>")
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.text(I18n.t("browse.start_rjs.feature_warning", { num_features: count, max_features: limit }))
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.prepend(
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$("<span class='icon close'></span>")
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.click(cancel))
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.append(
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$("<input type='submit'>")
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.val(I18n.t('browse.start_rjs.load_data'))
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.click(add)));
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}
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var dataLoader;
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function getData() {
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var bounds = map.getBounds();
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var url = "/api/" + OSM.API_VERSION + "/map?bbox=" + bounds.toBBoxString();
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/*
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* Modern browsers are quite happy showing far more than 100 features in
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* the data browser, so increase the limit to 2000 by default, but keep
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* it restricted to 500 for IE8 and 100 for older IEs.
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*/
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var maxFeatures = 2000;
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/*@cc_on
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if (navigator.appVersion < 8) {
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maxFeatures = 100;
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} else if (navigator.appVersion < 9) {
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maxFeatures = 500;
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}
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@*/
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if (dataLoader) dataLoader.abort();
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dataLoader = $.ajax({
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url: url,
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success: function (xml) {
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dataLayer.clearLayers();
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selectedLayer = null;
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var features = dataLayer.buildFeatures(xml);
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function addFeatures() {
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$('#browse_status').empty();
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dataLayer.addData(features);
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browseBounds = bounds;
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}
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function cancelAddFeatures() {
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$('#browse_status').empty();
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}
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if (features.length < maxFeatures) {
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addFeatures();
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} else {
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displayFeatureWarning(features.length, maxFeatures, addFeatures, cancelAddFeatures);
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}
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dataLoader = null;
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}
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});
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}
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function onSelect(layer) {
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// Unselect previously selected feature
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if (selectedLayer) {
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selectedLayer.setStyle(selectedLayer.originalStyle);
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}
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// Redraw in selected style
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layer.originalStyle = layer.options;
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layer.setStyle({color: '#0000ff', weight: 8});
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OSM.router.route('/' + layer.feature.type + '/' + layer.feature.id);
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// Stash the currently drawn feature
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selectedLayer = layer;
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}
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}
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