290 lines
12 KiB
JavaScript
290 lines
12 KiB
JavaScript
/* global L, alertify */
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if ('geolocation' in navigator) {
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var button = document.querySelector('#locate');
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if (button.addEventListener) {
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//if we have javascript, event listeners and geolocation, make the locate
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//button clickable and add event
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button.disabled = false;
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button.addEventListener('click', getLocation);
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}
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}
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function getLocation() {
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navigator.geolocation.getCurrentPosition(function (position) {
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//the locate button has been clicked so add the places/map
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addPlacesMap(position.coords.latitude, position.coords.longitude, position.coords.accuracy);
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});
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}
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function addPlacesMap(latitude, longitude, uncertainty) {
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//get the nearby places
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fetch('/places/near/' + latitude + '/' + longitude + '?u=' + uncertainty, {
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credentials: 'same-origin',
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method: 'get'
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}).then(function (response) {
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return response.json();
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}).then(function (j) {
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if (j.error == true) {
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alertify.reset();
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alertify.error(j.error_description);
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}
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if (j.places.length > 0) {
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var i;
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var places = [];
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for (i = 0; i < j.places.length; ++i) {
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var latlng = parseLocation(j.places[i].location);
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var name = j.places[i].name;
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var uri = j.places[i].uri;
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places.push([name, uri, latlng[0], latlng[1]]);
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}
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//add a map with the nearby places
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addMap(latitude, longitude, places);
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} else {
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//add a map with just current location
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addMap(latitude, longitude);
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}
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}).catch(function (err) {
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console.error(err);
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});
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}
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function addMap(latitude, longitude, places) {
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//make places null if not supplied
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if (arguments.length == 2) {
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places = null;
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}
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var form = button.parentNode;
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var div = document.createElement('div');
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div.setAttribute('id', 'map');
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//add the map div
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form.appendChild(div);
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L.mapbox.accessToken = 'pk.eyJ1Ijoiam9ubnliYXJuZXMiLCJhIjoiVlpndW1EYyJ9.aP9fxAqLKh7lj0LpFh5k1w';
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var map = L.mapbox.map('map', 'jonnybarnes.gnoihnim')
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.setView([latitude, longitude], 15)
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.addLayer(L.mapbox.tileLayer('jonnybarnes.gnoihnim', {
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detectRetina: true
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}));
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//add a marker for the current location
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var marker = L.marker([latitude, longitude], {
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draggable: true
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}).addTo(map);
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//when the location marker is dragged, if the new place form elements exist
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//update the lat/lng values
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marker.on('dragend', function () {
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var mapMarkerLatitude = getLatitudeFromMapboxMarker(marker.getLatLng());
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var mapMarkerLongitude = getLongitudeFromMapboxMarker(marker.getLatLng());
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var coordsOption = document.querySelector('#option-coords');
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if (coordsOption != null) {
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coordsOption.value = 'geo:' + mapMarkerLatitude + ',' + mapMarkerLongitude;
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}
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var placeFormLatitude = document.querySelector('#place-latitude');
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if (placeFormLatitude !== null) {
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placeFormLatitude.value = mapMarkerLatitude;
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}
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var placeFormLongitude = document.querySelector('#place-longitude');
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if (placeFormLongitude !== null) {
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placeFormLongitude.value = mapMarkerLongitude;
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}
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});
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//create the <select> element and give it a no location default
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var selectEl = document.createElement('select');
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selectEl.setAttribute('name', 'location');
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var noLocation = document.createElement('option');
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noLocation.setAttribute('value', 'no-location');
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noLocation.appendChild(document.createTextNode('Don’t send location'));
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selectEl.appendChild(noLocation);
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var geoLocation = document.createElement('option');
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geoLocation.setAttribute('selected', 'selected');
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geoLocation.setAttribute('id', 'option-coords');
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geoLocation.setAttribute('value', 'geo:' + latitude + ',' + longitude);
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geoLocation.appendChild(document.createTextNode('Send co-ordinates'));
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selectEl.appendChild(geoLocation);
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form.insertBefore(selectEl, div);
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if (places !== null) {
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//add the places both to the map and <select>
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places.forEach(function (item) {
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var option = document.createElement('option');
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option.setAttribute('value', item[1]);
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var text = document.createTextNode(item[0]);
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option.appendChild(text);
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option.dataset.latitude = item[2];
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option.dataset.longitude = item[3];
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selectEl.appendChild(option);
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var placeMarker = L.marker([item[2], item[3]], {
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icon: L.mapbox.marker.icon({
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'marker-size': 'large',
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'marker-symbol': 'building',
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'marker-color': '#fa0'
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})
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}).addTo(map);
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var name = 'Name: ' + item[0];
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placeMarker.bindPopup(name, {
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closeButton: true
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});
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placeMarker.on('click', function () {
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map.panTo([item[2], item[3]]);
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selectPlace(item[1]);
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});
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});
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//add an event listener
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selectEl.addEventListener('change', function () {
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if (selectEl.value !== 'no-location') {
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var placeLat = selectEl[selectEl.selectedIndex].dataset.latitude;
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var placeLon = selectEl[selectEl.selectedIndex].dataset.longitude;
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map.panTo([placeLat, placeLon]);
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}
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});
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}
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//add a button to add a new place
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var newLocButton = document.createElement('button');
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newLocButton.setAttribute('type', 'button');
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newLocButton.setAttribute('id', 'create-new-place');
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newLocButton.appendChild(document.createTextNode('Create New Place?'));
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//the event listener
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newLocButton.addEventListener('click', function() {
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//add the form elements
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var nameLabel = document.createElement('label');
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nameLabel.setAttribute('for', 'place-name');
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nameLabel.classList.add('place-label');
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nameLabel.appendChild(document.createTextNode('Place Name:'));
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var nameEl = document.createElement('input');
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nameEl.setAttribute('placeholder', 'Name');
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nameEl.setAttribute('name', 'place-name');
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nameEl.setAttribute('id', 'place-name');
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nameEl.setAttribute('type', 'text');
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var descLabel = document.createElement('label');
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descLabel.setAttribute('for', 'place-description');
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descLabel.classList.add('place-label');
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descLabel.appendChild(document.createTextNode('Place Description:'));
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var descEl = document.createElement('input');
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descEl.setAttribute('placeholder', 'Description');
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descEl.setAttribute('name', 'place-description');
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descEl.setAttribute('id', 'place-description');
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descEl.setAttribute('type', 'text');
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var latLabel = document.createElement('label');
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latLabel.setAttribute('for', 'place-latitude');
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latLabel.classList.add('place-label');
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latLabel.appendChild(document.createTextNode('Place Latitude:'));
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var latEl = document.createElement('input');
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latEl.setAttribute('name', 'place-latitude');
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latEl.setAttribute('id', 'place-latitude');
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latEl.setAttribute('type', 'text');
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latEl.value = getLatitudeFromMapboxMarker(marker.getLatLng());
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var lonLabel = document.createElement('label');
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lonLabel.setAttribute('for', 'place-longitude');
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lonLabel.classList.add('place-label');
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lonLabel.appendChild(document.createTextNode('Place Longitude:'));
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var lonEl = document.createElement('input');
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lonEl.setAttribute('name', 'place-longitude');
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lonEl.setAttribute('id', 'place-longitude');
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lonEl.setAttribute('type', 'text');
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lonEl.value = getLongitudeFromMapboxMarker(marker.getLatLng());
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var placeSubmit = document.createElement('button');
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placeSubmit.setAttribute('id', 'place-submit');
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placeSubmit.setAttribute('value', 'Submit New Place');
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placeSubmit.setAttribute('name', 'place-submit');
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placeSubmit.setAttribute('type', 'button');
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placeSubmit.appendChild(document.createTextNode('Submit New Place'));
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form.appendChild(nameLabel);
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form.appendChild(nameEl);
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form.appendChild(descLabel);
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form.appendChild(descEl);
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form.appendChild(latLabel);
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form.appendChild(latEl);
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form.appendChild(lonLabel);
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form.appendChild(lonEl);
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form.appendChild(placeSubmit);
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//the event listener for the new place form
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placeSubmit.addEventListener('click', function () {
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//create the form data to send
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var formData = new FormData();
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formData.append('place-name', document.querySelector('#place-name').value);
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formData.append('place-description', document.querySelector('#place-description').value);
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formData.append('place-latitude', document.querySelector('#place-latitude').value);
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formData.append('place-longitude', document.querySelector('#place-longitude').value);
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//post the new place
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fetch('/places/new', {
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//send cookies with the request
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credentials: 'same-origin',
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method: 'post',
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body: formData
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})
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.then(function (response) {
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return response.json();
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})
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.then(function (placeJson) {
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if (placeJson.error == true) {
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throw new Error(placeJson.error_description);
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}
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//remove un-needed form elements
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form.removeChild(document.querySelector('#place-name'));
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form.removeChild(document.querySelector('#place-description'));
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form.removeChild(document.querySelector('#place-latitude'));
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form.removeChild(document.querySelector('#place-longitude'));
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var labels = document.querySelectorAll('.place-label');
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for (var i = 0; i < labels.length; ++i) {
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form.removeChild(labels[i]);
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}
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form.removeChild(document.querySelector('#place-submit'));
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form.removeChild(document.querySelector('#create-new-place'));
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//remove location marker
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map.removeLayer(marker);
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//add place marker
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var newOption = document.createElement('option');
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newOption.setAttribute('value', placeJson.uri);
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newOption.appendChild(document.createTextNode(placeJson.name));
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newOption.dataset.latitude = placeJson.latitude;
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newOption.dataset.longitude = placeJson.longitude;
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selectEl.appendChild(newOption);
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var newPlaceMarker = L.marker([placeJson.latitude, placeJson.longitude], {
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icon: L.mapbox.marker.icon({
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'marker-size': 'large',
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'marker-symbol': 'building',
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'marker-color': '#fa0'
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})
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}).addTo(map);
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map.panTo([placeJson.latitude, placeJson.longitude]);
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var newName = 'Name: ' + placeJson.name;
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newPlaceMarker.bindPopup(newName, {
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closeButton: true
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});
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newPlaceMarker.on('click', function () {
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map.panTo([placeJson.latitude, placeJson.longitude]);
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selectPlace(placeJson.uri);
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});
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//make selected
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selectPlace(placeJson.uri);
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}).catch(function (placeError) {
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alertify.reset();
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alertify.error(placeError);
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});
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});
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});
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form.insertBefore(newLocButton, div);
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}
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function parseLocation(point) {
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var re = /\((.*)\)/;
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var resultArray = re.exec(point);
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var location = resultArray[1].split(' ');
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return [location[1], location[0]];
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}
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function selectPlace(uri) {
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document.querySelector('select [value="' + uri + '"]').selected = true;
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}
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function getLatitudeFromMapboxMarker(latlng) {
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var resultArray = /\((.*)\)/.exec(latlng);
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var location = resultArray[1].split(' ');
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return location[0].replace(',', '');
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}
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function getLongitudeFromMapboxMarker(latlng) {
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var resultArray = /\((.*)\)/.exec(latlng);
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var location = resultArray[1].split(' ');
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return location[1];
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}
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