Altes Köln

Widget:Karte: Unterschied zwischen den Versionen

Aus Altes Köln
Wechseln zu:Navigation, Suche
(Quell-/Lizenzangaben verbessert)
(Links von Zeiträume Köln nochmal angepasst)
Markierung: 2017-Quelltext-Bearbeitung
 
(43 dazwischenliegende Versionen desselben Benutzers werden nicht angezeigt)
Zeile 17: Zeile 17:
min-width: 300px;
min-width: 300px;
height: 600px;
height: 600px;
margin: 0 0 0 2em;
padding: 2em;
padding: 1em;
border: 1px solid #ced4da;
border-radius: 4px;
box-shadow: 0px 3px 12px rgba(0,0,0,0.1);
overflow-y: auto;
overflow-y: auto;


font-family: Arial, sans-serif;
font-family: Arial, sans-serif;
font-size: 16px;
color: #495057;
color: #495057;
}
}
Zeile 39: Zeile 36:


font-weight: 600;
font-weight: 600;
font-size: 16px;
}
}


Zeile 46: Zeile 44:
}
}


.ak-map-layers {
.ak-map-container label {
margin-bottom: 0;
}
 
.ak-map-container input {
margin-left: 0;
margin-right: 0.5em;
}
 
.ak-map-layers,
.ak-map-basemaps {
list-style: none;
list-style: none;
margin: 0;
margin: 0;
padding: 0;
padding: 0;
}
.ak-map-basemaps {
display: flex;
}
.ak-map-basemaps li+li {
margin-left: 1em;
}
}


.ak-map-layers li {
.ak-map-layers li {
display: flex;
align-items: center;
margin-bottom: 0;
margin-bottom: 0;
border-left-width: 0.5em;
border-left-width: 0.5em;
Zeile 61: Zeile 79:
.ak-map-layers li+li {
.ak-map-layers li+li {
padding-top: 0.5em;
padding-top: 0.5em;
}
.ak-map-layers li label+a {
display: inline-block;
width: 16px;
height: 16px;
margin-left: 1em;
/* Info icon taken from https://feathericons.com/ */
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2374c0fc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='12' y1='16' x2='12' y2='12'%3E%3C/line%3E%3Cline x1='12' y1='8' x2='12' y2='8'%3E%3C/line%3E%3C/svg%3E");
}
.ak-map-layers li label+a:hover {
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23339af0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='12' y1='16' x2='12' y2='12'%3E%3C/line%3E%3Cline x1='12' y1='8' x2='12' y2='8'%3E%3C/line%3E%3C/svg%3E");
}
}


Zeile 77: Zeile 108:
.ak-map-layer-nachkriegszeit {
.ak-map-layer-nachkriegszeit {
border-color: #adb5bd;
border-color: #adb5bd;
}
.ak-map-links {
margin: 0;
padding-left: 15px;
list-style-image: none;
}
.ak-map-links li + li {
padding-top: 8px;
}
/* Metadata container that may be added by the wiki page to hand more information over to the map. */
.ak-map-metadata {
display: none;
}
}


Zeile 170: Zeile 217:
options: {
options: {
position: "topright",
position: "topright",
initialValue: 1,
initialValue: 0.7,
className: "ak-map-opacity-slider",
className: "ak-map-opacity-slider",
label: "Transparenz",
label: "Transparenz",
Zeile 200: Zeile 247:


this._sliderElement = sliderElement;
this._sliderElement = sliderElement;
this._opacityLayer = this.options.opacityLayer;
this.setOpacityLayer(this.options.opacityLayer);


sliderContainerElement.appendChild(sliderElement);
sliderContainerElement.appendChild(sliderElement);
Zeile 222: Zeile 269:
}
}


function initMap(mapContainerElement) {
function initMap(mapContainerElement, metadata, baseLayerToShow, historicalLayerToShow, geoJsonDataLayerUrl, poiDataLayerUrl) {
if (mapContainerElement.dataset.initialised) {
if (mapContainerElement.dataset.initialised) {
return;
return;
Zeile 287: Zeile 334:
tooltip: "Mercatorplan von Köln, auch bekannt als Kölner Stadtansicht von 1570/1571, Arnold Mercator",
tooltip: "Mercatorplan von Köln, auch bekannt als Kölner Stadtansicht von 1570/1571, Arnold Mercator",
era: eras.mittelalter,
era: eras.mittelalter,
layer: L.tileLayer('http://mapwarper.net/maps/tile/40952/{z}/{x}/{y}.png', {
layer: L.tileLayer('https://mapwarper.net/maps/tile/40952/{z}/{x}/{y}.png', {
minZoom: 6,
minZoom: 6,
maxZoom: 18,
maxZoom: 18,
Zeile 295: Zeile 342:
[51.0849743, 7.1620280]
[51.0849743, 7.1620280]
],
],
attribution: '<a href="http://mapwarper.net/maps/40952">Georeferenzierte Datei</a>, <a href="http://www.deutschefotothek.de/documents/obj/70305086">Originaldatei © SLUB / Deutsche Fotothek</a>, <a href="https://creativecommons.org/licenses/by-sa/4.0/">cc-by-sa</a>'
attribution: '<a href="https://mapwarper.net/maps/40952">Georeferenzierte Datei</a>, <a href="http://www.deutschefotothek.de/documents/obj/70305086">Originaldatei © SLUB / Deutsche Fotothek</a>, <a href="https://creativecommons.org/licenses/by-sa/4.0/">cc-by-sa</a>'
})
})
},
},
Zeile 312: Zeile 359:
],
],
attribution: '<a href="https://mapwarper.net/maps/39783">Georeferenzierte Datei</a>'
attribution: '<a href="https://mapwarper.net/maps/39783">Georeferenzierte Datei</a>'
})
},
{
id: "reinhardt",
label: "1752 Reinhardt",
tooltip: "Kölner Stadtplan von 1752, Johann Valentin Reinhardt",
era: eras.mittelalter,
layer: L.tileLayer('https://mapwarper.net/maps/tile/41691/{z}/{x}/{y}.png', {
minZoom: 6,
maxZoom: 18,
// TODO Restrict bounds even further.
bounds: [
[50.8304494, 6.7725303],
[51.0849743, 7.1620280]
],
attribution: '<a href="https://mapwarper.net/maps/41691">Georeferenzierte Datei</a>'
})
})
},
},
Zeile 355: Zeile 418:
layer: L.tileLayer('https://mapwarper.net/maps/tile/39826/{z}/{x}/{y}.png', {
layer: L.tileLayer('https://mapwarper.net/maps/tile/39826/{z}/{x}/{y}.png', {
minZoom: 6,
minZoom: 6,
maxZoom: 17,
maxZoom: 18,
// TODO Restrict bounds even further.
// TODO Restrict bounds even further.
bounds: [
bounds: [
Zeile 362: Zeile 425:
],
],
attribution: '<a href="https://mapwarper.net/maps/39826">Georeferenzierte Datei</a>'
attribution: '<a href="https://mapwarper.net/maps/39826">Georeferenzierte Datei</a>'
})
},
{
id: "festungsplan",
label: "1815-1918 Festungsplan",
tooltip: "Standorte von militärischen Bauwerken und Anlagen in den Jahren 1815-1918",
era: eras.preussisch,
layer: L.tileLayer('https://mapwarper.net/maps/tile/56436/{z}/{x}/{y}.png', {
minZoom: 6,
maxZoom: 18,
// TODO Restrict bounds even further.
bounds: [
[50.8304494, 6.7725303],
[51.0849743, 7.1620280]
],
attribution: '<a href="https://mapwarper.net/maps/56436">Georeferenzierte Datei</a>'
})
})
},
},
Zeile 370: Zeile 449:
era: eras.preussisch,
era: eras.preussisch,
layer: L.tileLayer.wms('https://www.wms.nrw.de/geobasis/wms_nw_uraufnahme?', {
layer: L.tileLayer.wms('https://www.wms.nrw.de/geobasis/wms_nw_uraufnahme?', {
layers: 'nw_uraufnahme_gk',
layers: 'nw_uraufnahme_rw',
minNativeZoom: 14,
minNativeZoom: 14,
minZoom: 12,
minZoom: 12,
Zeile 480: Zeile 559:


// TODO Find a way to display the attribution of the layers more clearly. "|" as a separator instead of ",".
// TODO Find a way to display the attribution of the layers more clearly. "|" as a separator instead of ",".
var baseLayerOsmElement = mapContainerElement.querySelector(".ak-base-map-selection--osm");
var baseLayerDopElement = mapContainerElement.querySelector(".ak-base-map-selection--dop");


// Keeping track of selected layers. Set initially selected ones.
// Keeping track of selected layers. Set initially selected ones.
var currentMap = maps[0];
var currentHistLayer = maps[0];
var currentBaseLayer = osmLayer;
var currentBaseLayer = osmLayer;
if (baseLayerToShow) {
if (baseLayerToShow === "osm") {
currentBaseLayer = osmLayer;
} else if (baseLayerToShow === "dop") {
currentBaseLayer = dopLayer;
baseLayerDopElement.checked = true;
}
}
if (historicalLayerToShow) {
for (var i = 0; i < maps.length; i++) {
if (maps[i].id === historicalLayerToShow) {
currentHistLayer = maps[i];
break;
}
}
}


// Switching between base layers
// Switching between base layers
function baseMapSwitcher() {
function baseLayerSwitcher() {
if (this.checked) {
if (this.checked) {
currentBaseLayer.remove();
currentBaseLayer.remove();
Zeile 495: Zeile 593:
}
}
// TODO Funktioniert nicht.
// TODO Funktioniert nicht.
currentBaseLayer.options.minZoom = currentMap.layer.minZoom;
currentBaseLayer.options.minZoom = currentHistLayer.layer.minZoom;
currentBaseLayer.options.maxZoom = currentMap.layer.maxZoom;
currentBaseLayer.options.maxZoom = currentHistLayer.layer.maxZoom;
currentBaseLayer.addTo(mapView);
currentBaseLayer.addTo(mapView);
currentBaseLayer.bringToBack();
currentBaseLayer.bringToBack();
}
}
}
}
mapContainerElement.querySelector(".ak-base-map-selection--osm").addEventListener("change", baseMapSwitcher);
baseLayerOsmElement.addEventListener("change", baseLayerSwitcher);
mapContainerElement.querySelector(".ak-base-map-selection--dop").addEventListener("change", baseMapSwitcher);
baseLayerDopElement.addEventListener("change", baseLayerSwitcher);


// Setting opacity
// Setting opacity
var opacitySliderControl = L.control.opacitySlider({ opacityLayer: currentMap.layer }).addTo(mapView);
var opacitySliderControl = L.control.opacitySlider({ opacityLayer: currentHistLayer.layer }).addTo(mapView);


// Render radio buttons for historical map switching.
// Render radio buttons for historical map switching.
Zeile 523: Zeile 621:
labelElement.appendChild(document.createTextNode(map.label));
labelElement.appendChild(document.createTextNode(map.label));


if (map === currentMap) {
if (map === currentHistLayer) {
inputElement.checked = true;
inputElement.checked = true;
}
}
Zeile 529: Zeile 627:
inputElement.addEventListener("change", function() {
inputElement.addEventListener("change", function() {
if (inputElement.checked) {
if (inputElement.checked) {
currentMap.layer.remove();
currentHistLayer.layer.remove();
currentMap = map;
currentHistLayer = map;
opacitySliderControl.setOpacityLayer(currentMap.layer);
opacitySliderControl.setOpacityLayer(currentHistLayer.layer);
currentMap.layer.addTo(mapView);
currentHistLayer.layer.addTo(mapView);
// TODO check zoom range and bounds of map, adjust mapView accordingly.
// TODO check zoom range and bounds of map, adjust mapView accordingly.
}
}
});
});
var mapPageUrl = metadata[map.id];
if (mapPageUrl) {
var pageLinkElement = L.DomUtil.create("a");
pageLinkElement.href = mapPageUrl;
pageLinkElement.setAttribute("title", "Zur Kartenseite");
pageLinkElement.setAttribute("aria-label", "Zur Kartenseite");
listItemElement.appendChild(pageLinkElement);
}
});
});


// Show layers.
// Show layers.
currentBaseLayer.addTo(mapView);
currentBaseLayer.addTo(mapView);
currentMap.layer.addTo(mapView);
currentHistLayer.layer.addTo(mapView);
 
// Load data layer if provided.
if (geoJsonDataLayerUrl) {
loadJson(geoJsonDataLayerUrl, function(data) {
var options = {
// TODO add tooltips/markers/styles etc. from data using onEachFeature/style function options, implementing <https://github.com/mapbox/simplestyle-spec/tree/master/1.1.0>.
// see <https://leafletjs.com/reference-1.5.0.html#geojson>.
style: function(geoJsonFeature) {
return {
interactive: false
};
}
};
if (data.attributionText && data.attributionUrl) {
// Create as DOM node and then convert back to text to escape attribution content and prevent XSS attacks.
var attributionLinkElement = L.DomUtil.create("a");
attributionLinkElement.href = data.attributionUrl;
attributionLinkElement.appendChild(document.createTextNode(data.attributionText));
options.attribution = attributionLinkElement.outerHTML;
}
var dataLayer = L.geoJSON(data, options);
dataLayer.addTo(mapView);
// Set view and zoom around shapes being shown.
// TODO Might want to introduce some padding later. But consider <https://stackoverflow.com/a/55173276>.
// TODO This does a really visible zoom out / movement which might be nauseating. Maybe we can load the data earlier (in parallel to waiting for DOMContentLoaded) and only render the map once it is available (with a timeout).
mapView.fitBounds(dataLayer.getBounds());
}, function() {
mapView.openPopup("Die Daten für das anzuzeigende Objekt konnten leider nicht geladen werden. 🙁", mapView.getCenter());
});
}
 
if (poiDataLayerUrl) {
loadJson(poiDataLayerUrl, function(response) {
var data = convertSmwResultToGeoJson(response);
var options = {
pointToLayer: function(geoJsonPoint, latlng) {
var options = {
riseOnHover: true
};
if (geoJsonPoint.properties && geoJsonPoint.properties.title) {
options.title = geoJsonPoint.properties.title;
}
return L.marker(latlng, options);
},
onEachFeature: function(feature, layer) {
if (feature.properties && (feature.properties.description || feature.properties.url || feature.properties.pictureUrl)) {
var popupContent = "";
if (feature.properties.title) {
if (feature.properties.url) {
popupContent += "<h3><a href=\"" + feature.properties.url + "\">" + feature.properties.title + "</a></h3>";
} else {
popupContent += "<h3>" + feature.properties.title + "</h3>";
}
}
if (feature.properties.description) {
popupContent += "<p>" + feature.properties.description + "</p>";
}
if (feature.properties.pictureUrl) {
popupContent += "<p><img src=\"" + feature.properties.pictureUrl + "\" /></p>";
}
if (feature.properties.url && !feature.properties.title) {
popupContent += "<p><a href=\"" + feature.properties.url + "\">Seite besuchen</a></p>";
}
layer.bindPopup(popupContent);
}
}
};
var dataLayer = L.geoJSON(data, options);
dataLayer.addTo(mapView);
}, function() {
mapView.openPopup("Die anzuzeigenden Daten konnten leider nicht geladen werden. 🙁", mapView.getCenter());
});
}
}
 
function convertSmwResultToGeoJson(response) {
var results = response.query.results;
var geoJson = {
"type": "FeatureCollection",
"features": []
};
geoJson.features = results.map(function(result) {
// For some reason the actual semantic object is in a property in the result object, with the key being the id of the object.
// Since we don't know the id in advance we have to fetch it as the first (and hopefully only) key of the object.
var object = result[Object.keys(result)[0]];
// Can't handle results without coordinates, so skip this one.
if (typeof object.printouts.Position === "undefined" || object.printouts.Position.length === 0) {
return null;
}
var feature = {
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [object.printouts.Position[0].lon, object.printouts.Position[0].lat]
},
"properties": {}
};
if (typeof object.printouts.Name !== "undefined" && object.printouts.Name.length) {
feature.properties.title = object.printouts.Name[0];
}
if (typeof object.printouts.Kurzbeschreibung !== "undefined" && object.printouts.Kurzbeschreibung.length) {
feature.properties.description = object.printouts.Kurzbeschreibung[0];
}
if (typeof object.printouts["Siehe auch"] !== "undefined" && object.printouts["Siehe auch"].length) {
feature.properties.url = object.printouts["Siehe auch"][0];
}
if (typeof object.printouts.Bild !== "undefined" && object.printouts.Bild.length) {
feature.properties.pictureUrl = object.printouts.Bild[0];
}
return feature;
}).filter(function(e) {
// Since we might have skipped some invalid results by returning null, we need to filter them out.
return e != null;
});
return geoJson;
}
 
function parseMetadata(metadataElements) {
var metadata = {};
for (var i = 0; i < metadataElements.length; i++) {
var element = metadataElements.item(i);
var queryRowElements = element.querySelectorAll(".smw-format.ul-format .smw-row");
forEachElement(queryRowElements, function(row) {
var anchorElement = row.querySelector(".smw-field:first-child .smw-value a");
var url = anchorElement.href;
var idValueElement = row.querySelector(".smw-field:last-child .smw-value");
var id = idValueElement.textContent;
metadata[id] = url;
});
}
return metadata;
}
 
function forEachElement(nodeList, callback) {
if (nodeList.forEach) {
nodeList.forEach(callback);
} else {
Array.prototype.forEach.call(nodeList, callback);
}
}
 
var getQueryParameter = (function() {
var query = window.location.search.substring(1);
var params = query.split("&");
params = params.map(function(param) {
var pair = param.split("=");
pair[0] = decodeURIComponent(pair[0]);
if (pair.length > 1) {
pair[1] = decodeURIComponent(pair[1]);
}
return pair;
});
return function(parameterName) {
for (var i = 0; i < params.length; i++) {
if (params[i][0] === parameterName) {
if (params[i].length > 1) {
return params[i][1];
}
return "";
}
}
return undefined;
};
})();
 
function loadJson(url, onSuccess, onFailure) {
var request = new XMLHttpRequest();
request.open("GET", url, true);
 
request.onload = function() {
if (request.status >= 200 && request.status < 400) {
var data;
try {
data = JSON.parse(request.responseText);
} catch(error) {
callSafely(onFailure, error);
return;
}
callSafely(onSuccess, data);
} else {
callSafely(onFailure);
}
};
 
request.onerror = function() {
callSafely(onFailure);
};
 
request.send();
}
 
function callSafely(callback) {
if (callback) {
callback.apply(null, Array.prototype.slice.call(arguments, 1));
}
}
 
function getGeoJsonDataLayerUrl() {
var dataLayer = getQueryParameter("dataLayer");
if (dataLayer) {
// TODO also check for https://www.mediawiki.org/wiki/Manual:Page_title
//    Base names equal to "." or "..", or beginning "./" or "../", or containing "/./" or "/../", or ending "/." or "/..".
// ?
if (dataLayer.indexOf("GeoJson:") === 0
&& dataLayer.indexOf("?") === -1
&& dataLayer.indexOf("&") === -1
&& dataLayer.indexOf("=") === -1
&& dataLayer.indexOf("/..") === -1) {
// TODO relative url?
return "https://altes-koeln.de/wiki/" + dataLayer + "?action=raw&ctype=application/json";
}
}
return undefined;
}
 
function getPoiDataLayerUrl() {
var poiConcept = getQueryParameter("pois");
if (poiConcept) {
// TODO Check the rest is a valid page name?
if (poiConcept.indexOf("Concept:") === 0) {
return "https://altes-koeln.de/api.php?action=askargs&conditions=" + poiConcept + "&printouts=Name|Position|Kurzbeschreibung|Siehe%20auch|Bild&format=json&api_version=3";
}
}
return undefined;
}
}


Zeile 546: Zeile 877:
document.addEventListener("DOMContentLoaded", function(event) {
document.addEventListener("DOMContentLoaded", function(event) {
var mapContainerElements = document.getElementsByClassName("ak-map-container");
var mapContainerElements = document.getElementsByClassName("ak-map-container");
for(var i = 0; i < mapContainerElements.length; i++) {
 
initMap(mapContainerElements.item(i));
var metadataElements = document.getElementsByClassName("ak-map-metadata");
var metadata = parseMetadata(metadataElements);
 
for (var i = 0; i < mapContainerElements.length; i++) {
initMap(mapContainerElements.item(i), metadata, getQueryParameter("baseLayer"), getQueryParameter("histLayer"), getGeoJsonDataLayerUrl(), getPoiDataLayerUrl());
}
}
});
});
Zeile 558: Zeile 893:
<fieldset>
<fieldset>
<legend>Basiskarte</legend>
<legend>Basiskarte</legend>
<label><input type="radio" class="ak-base-map-selection--osm" name="ak-base-map-selection" value="osm" checked>OpenStreetMap</label>
<ul class="ak-map-basemaps">
<label><input type="radio" class="ak-base-map-selection--dop" name="ak-base-map-selection" value="dop">Digitale Orthophotos</label>
<li><label><input type="radio" class="ak-base-map-selection--osm" name="ak-base-map-selection" value="osm" checked>OpenStreetMap</label></li>
<li><label><input type="radio" class="ak-base-map-selection--dop" name="ak-base-map-selection" value="dop">Digitale Orthophotos</label></li>
</ul>
</fieldset>
</fieldset>
<fieldset>
<fieldset>
<legend>Historische Karten</legend>
<legend>Historische Karten</legend>
<ul class="ak-map-layers">
<ul class="ak-map-layers">
</ul>
</fieldset>
<fieldset>
<legend>Zeiträume Köln</legend>
<ul class="ak-map-links">
<li><a href="https://opjoeck.maps.arcgis.com/apps/webappviewer/index.html?id=af439c30276b45159de0503c0f09a1ab" target="_blank" rel="noopener noreferrer" title="Römische Befestigung, mittelalterliche Stadtmauer, Umwallungen, Bastionen, Festungsringe, Kasernen, Hochbunker">Verteidigen & Schützen</a></li>
<li><a href="https://opjoeck.maps.arcgis.com/apps/webappviewer/index.html?id=52cfb2e6bb7a422b8d6ca7dc8127f518" target="_blank" rel="noopener noreferrer" title="Klöster, Kirchen, Synagogen, Krankenhäuser, Friedhöfe">Beten & Heilen</a></li>
<li><a href="https://opjoeck.maps.arcgis.com/apps/webappviewer/index.html?id=02b93995ff994fd3b230fa398a6ff354" target="_blank" rel="noopener noreferrer" title="Höfe, Mühlen">Ackern & Mahlen</a></li>
<li><a href="https://opjoeck.maps.arcgis.com/apps/webappviewer/index.html?id=74dc24a4814e442792b1c62eb60fbc90" target="_blank" rel="noopener noreferrer" title="Fabriken, Gewerbe, Verwaltung, Bahnhöfe, Häfen, Flughäfen, Wasser Gas Strom, Brauereien, Ziegeleien">Arbeiten & Transportieren</a></li>
<li><a href="https://opjoeck.maps.arcgis.com/apps/webappviewer/index.html?id=3629a694ba67454eaf204c58054b48e6" target="_blank" rel="noopener noreferrer" title="Wohnen, Schulen, Freizeit, Theater, Kinos, Museen">Leben & Lernen</a></li>
<li><a href="https://hermsdoerfer.familyds.com/Cologne/Entwicklung.html" target="_blank" rel="noopener noreferrer">Siedlungs- und Gebietsentwicklung</a></li>
</ul>
</ul>
</fieldset>
</fieldset>
</form>
</form>
</div>
</div>

Aktuelle Version vom 7. Januar 2024, 14:08 Uhr

<script type="text/javascript" src="https://unpkg.com/leaflet@1.4.0/dist/leaflet.js"></script> <link rel="stylesheet" type="text/css" href="https://unpkg.com/leaflet@1.4.0/dist/leaflet.css">

<style type="text/css"> .ak-map-container { display: flex; }

.ak-map { flex-grow: 1; height: 600px; }

.ak-map-sidebar { box-sizing: border-box; width: 20vw; min-width: 300px; height: 600px; padding: 2em; overflow-y: auto;

font-family: Arial, sans-serif; font-size: 16px; color: #495057; }

.ak-map-container fieldset { border: none; padding: 0; margin-bottom: 1.5em; }

.ak-map-container fieldset legend { margin-bottom: 0.75em; padding: 0;

font-weight: 600; font-size: 16px; }

.ak-map-container label, .ak-map-container input { cursor: pointer; }

.ak-map-container label { margin-bottom: 0; }

.ak-map-container input { margin-left: 0; margin-right: 0.5em; }

.ak-map-layers, .ak-map-basemaps { list-style: none; margin: 0; padding: 0; }

.ak-map-basemaps { display: flex; }

.ak-map-basemaps li+li { margin-left: 1em; }

.ak-map-layers li { display: flex; align-items: center; margin-bottom: 0; border-left-width: 0.5em; border-left-style: solid; padding-left: 0.5em; }

.ak-map-layers li+li { padding-top: 0.5em; }

.ak-map-layers li label+a { display: inline-block; width: 16px; height: 16px; margin-left: 1em; /* Info icon taken from https://feathericons.com/ */ background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2374c0fc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='12' y1='16' x2='12' y2='12'%3E%3C/line%3E%3Cline x1='12' y1='8' x2='12' y2='8'%3E%3C/line%3E%3C/svg%3E"); }

.ak-map-layers li label+a:hover { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23339af0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='12' y1='16' x2='12' y2='12'%3E%3C/line%3E%3Cline x1='12' y1='8' x2='12' y2='8'%3E%3C/line%3E%3C/svg%3E"); }

.ak-map-layer-mittelalter { border-color: #e03131; }

.ak-map-layer-franzoesisch { border-color: #3b5bdb; }

.ak-map-layer-preussisch { border-color: #212529; }

.ak-map-layer-nachkriegszeit { border-color: #adb5bd; }

.ak-map-links { margin: 0; padding-left: 15px; list-style-image: none; }

.ak-map-links li + li { padding-top: 8px; }


/* Metadata container that may be added by the wiki page to hand more information over to the map. */ .ak-map-metadata { display: none; }


/* Opacity slider */

input[type=range].ak-map-opacity-slider { -webkit-appearance: none; width: 150px; height: 40px; background: none; }

input[type=range].ak-map-opacity-slider::-webkit-slider-runnable-track { width: 100%; height: 11.4px; border: 1px solid #adb5bd; border-radius: 10px; box-shadow: 0px 3px 12px rgba(0,0,0,0.5); background: linear-gradient(to right, rgb(255,255,255), #ffc078); cursor: pointer; }

input[type=range].ak-map-opacity-slider::-webkit-slider-thumb { width: 26px; height: 26px; margin-top: -8.5px; border: 1px solid #adb5bd; border-radius: 15px; box-shadow: 0px 3px 12px rgba(0,0,0,0.5); background: #ffffff; -webkit-appearance: none; cursor: pointer; }

input[type=range].ak-map-opacity-slider::-moz-range-track { width: 100%; height: 11.4px; border: 1px solid #adb5bd; border-radius: 10px; box-shadow: 0px 3px 12px rgba(0,0,0,0.5); background: linear-gradient(to right, rgb(255,255,255), #ffc078); cursor: pointer; }

input[type=range].ak-map-opacity-slider::-moz-range-thumb { width: 26px; height: 26px; border: 1px solid #adb5bd; border-radius: 15px; box-shadow: 0px 3px 12px rgba(0,0,0,0.5); background: #ffffff; cursor: pointer; }

input[type=range].ak-map-opacity-slider::-ms-track { width: 100%; height: 11.4px; border: 1px solid #adb5bd; border-radius: 10px; background: linear-gradient(to right, rgb(255,255,255), #ffc078); box-sizing: border-box; color: transparent; cursor: pointer; }

input[type=range].ak-map-opacity-slider::-ms-thumb { width: 26px; height: 26px; margin-top: 0px; border: 1px solid #adb5bd; border-radius: 15px; box-shadow: none; background: #ffffff; cursor: pointer; }

input[type=range].ak-map-opacity-slider::-ms-fill-lower, input[type=range].ak-map-opacity-slider::-ms-fill-upper { background: transparent; }

input[type=range].ak-map-opacity-slider::-ms-tooltip { display: none; }

</style>

<script type="text/javascript"> (function () {

L.Control.OpacitySlider = L.Control.extend({ options: { position: "topright", initialValue: 0.7, className: "ak-map-opacity-slider", label: "Transparenz", opacityLayer: undefined },

onAdd: function(map) { var sliderContainerElement = L.DomUtil.create("div");

var sliderElement = L.DomUtil.create("input", this.options.className); sliderElement.setAttribute("type", "range"); sliderElement.setAttribute("min", "0"); sliderElement.setAttribute("max", "1"); sliderElement.setAttribute("step", "0.1"); sliderElement.setAttribute("value", this.options.initialValue); sliderElement.setAttribute("title", this.options.label); sliderElement.setAttribute("aria-label", this.options.label);

L.DomEvent.on(sliderElement, "input", this._setOpacity.bind(this)); // Necessary for IE10/11 support L.DomEvent.on(sliderElement, "change", this._setOpacity.bind(this)); // Prevent dragging of slider handle from moving the map. L.DomEvent.on(sliderElement, "mousedown", function(event) { map.dragging.disable(); }); L.DomEvent.on(sliderElement, "mouseup", function(event) { map.dragging.enable(); });

this._sliderElement = sliderElement; this.setOpacityLayer(this.options.opacityLayer);

sliderContainerElement.appendChild(sliderElement); return sliderContainerElement; },

_setOpacity: function() { if (this._opacityLayer) { this._opacityLayer.setOpacity(this._sliderElement.value); } },

setOpacityLayer: function(layer) { this._opacityLayer = layer; this._setOpacity(); } });

L.control.opacitySlider = function(opts) { return new L.Control.OpacitySlider(opts); }

function initMap(mapContainerElement, metadata, baseLayerToShow, historicalLayerToShow, geoJsonDataLayerUrl, poiDataLayerUrl) { if (mapContainerElement.dataset.initialised) { return; } mapContainerElement.dataset.initialised = true;

var mapElement = mapContainerElement.getElementsByClassName("ak-map")[0];

var mapView = L.map(mapElement, { // Bounding box for Köln (<https://www.openstreetmap.org/relation/62578>). maxBounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], }).setView([50.938056, 6.956944], 14);

mapView.on('zoom', function(event) { // For testing purposes and to figure out good min/max zoom levels for new maps. console.log("Zoom:", mapView.getZoom()); });

// Base layers var osmLayer = L.tileLayer('https://{s}.tile.openstreetmap.de/tiles/osmde/{z}/{x}/{y}.png', { minZoom: 6, maxZoom: 18, attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors' }); var dopLayer = L.tileLayer.wms('https://www.wms.nrw.de/geobasis/wms_nw_dop?', { layers: 'nw_dop_rgb', minZoom: 6, maxZoom: 18, bounds: [ [52.57192795134163, 9.683550865862706], [50.265130303028236, 5.532200974503678] ], version: '1.3.0', attribution: 'Land NRW (2019), dl-de/by-2-0 (<a href="https://www.govdata.de/dl-de/by-2-0">www.govdata.de/dl-de/by-2-0</a>), <a href="https://www.bezreg-koeln.nrw.de/brk_internet/geobasis/luftbilderzeugnisse/digitale_orthophotos/index.html">Datensatz</a>' });

var eras = { mittelalter: { "class": "ak-map-layer-mittelalter", tooltip: "Mittelalter / Freie Reichsstadt / Hansestadt Köln" }, franzoesisch: { "class": "ak-map-layer-franzoesisch", tooltip: "Französisches Köln" }, preussisch: { "class": "ak-map-layer-preussisch", tooltip: "Preußisches Köln" }, nachkriegszeit: { "class": "ak-map-layer-nachkriegszeit", tooltip: "Nachkriegszeit bis heute" } };

// Historical maps var maps = [ { id: "mercator", label: "1571 Mercator", tooltip: "Mercatorplan von Köln, auch bekannt als Kölner Stadtansicht von 1570/1571, Arnold Mercator", era: eras.mittelalter, layer: L.tileLayer('https://mapwarper.net/maps/tile/40952/{z}/{x}/{y}.png', { minZoom: 6, maxZoom: 18, // TODO Restrict bounds even further. bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], attribution: '<a href="https://mapwarper.net/maps/40952">Georeferenzierte Datei</a>, <a href="http://www.deutschefotothek.de/documents/obj/70305086">Originaldatei © SLUB / Deutsche Fotothek</a>, <a href="https://creativecommons.org/licenses/by-sa/4.0/">cc-by-sa</a>' }) }, { id: "merian", label: "1641 Merian", tooltip: "Colonia Agrippina - Cölln, 1641, aus: Topographia Germaniae: 6. Topographia Archiepiscopatuum Moguntinensis, Trevirensis et Coloniensis, hrsg. 1645 von Matthäus Merian", era: eras.mittelalter, layer: L.tileLayer('https://mapwarper.net/maps/tile/39783/{z}/{x}/{y}.png', { minZoom: 6, maxZoom: 17, // TODO Restrict bounds even further. bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], attribution: '<a href="https://mapwarper.net/maps/39783">Georeferenzierte Datei</a>' }) }, { id: "reinhardt", label: "1752 Reinhardt", tooltip: "Kölner Stadtplan von 1752, Johann Valentin Reinhardt", era: eras.mittelalter, layer: L.tileLayer('https://mapwarper.net/maps/tile/41691/{z}/{x}/{y}.png', { minZoom: 6, maxZoom: 18, // TODO Restrict bounds even further. bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], attribution: '<a href="https://mapwarper.net/maps/41691">Georeferenzierte Datei</a>' }) }, { id: "stockdale", label: "1800 Stockdale", tooltip: "A Plan of the City of Cologne, 1800, John Stockdale", era: eras.franzoesisch, layer: L.tileLayer('https://mapwarper.net/maps/tile/39780/{z}/{x}/{y}.png', { minZoom: 6, maxZoom: 17, // TODO Restrict bounds even further. bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], attribution: '<a href="https://mapwarper.net/maps/39780">Georeferenzierte Datei</a>' }) }, { id: "tranchot", label: "1801-1828 Tranchot/v. Müffling", tooltip: "1801 - 1828: Kartenaufnahme der Rheinlande 1:25.000; Tranchot/v. Müffling", era: eras.franzoesisch, layer: L.tileLayer.wms('https://www.wms.nrw.de/geobasis/wms_nw_tranchot?', { layers: 'nw_tranchot', minNativeZoom: 12, minZoom: 10, maxZoom: 16, bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], version: '1.3.0', attribution: 'Land NRW (2019), dl-de/by-2-0 (<a href="https://www.govdata.de/dl-de/by-2-0">www.govdata.de/dl-de/by-2-0</a>), <a href="https://www.bezreg-koeln.nrw.de/brk_internet/geobasis/sonstige/historische_karten/1801/index.html">Datensatz</a>' }) }, { id: "vogt", label: "1815 Vogt/Picquet", tooltip: "Grundriss der Stadt Köln 1815, gezeichnet von Vogt, gestochen von Picquet", era: eras.franzoesisch, layer: L.tileLayer('https://mapwarper.net/maps/tile/39826/{z}/{x}/{y}.png', { minZoom: 6, maxZoom: 18, // TODO Restrict bounds even further. bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], attribution: '<a href="https://mapwarper.net/maps/39826">Georeferenzierte Datei</a>' }) }, { id: "festungsplan", label: "1815-1918 Festungsplan", tooltip: "Standorte von militärischen Bauwerken und Anlagen in den Jahren 1815-1918", era: eras.preussisch, layer: L.tileLayer('https://mapwarper.net/maps/tile/56436/{z}/{x}/{y}.png', { minZoom: 6, maxZoom: 18, // TODO Restrict bounds even further. bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], attribution: '<a href="https://mapwarper.net/maps/56436">Georeferenzierte Datei</a>' }) }, { id: "uraufnahme", label: "1836-1850 Uraufnahme", tooltip: "1836 - 1850: Preußische Kartenaufnahme 1:25.000; Uraufnahme", era: eras.preussisch, layer: L.tileLayer.wms('https://www.wms.nrw.de/geobasis/wms_nw_uraufnahme?', { layers: 'nw_uraufnahme_rw', minNativeZoom: 14, minZoom: 12, maxZoom: 17, bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], version: '1.3.0', attribution: 'Land NRW (2019), dl-de/by-2-0 (<a href="https://www.govdata.de/dl-de/by-2-0">www.govdata.de/dl-de/by-2-0</a>), <a href="https://www.bezreg-koeln.nrw.de/brk_internet/geobasis/sonstige/historische_karten/1836/index.html">Datensatz</a>' }) }, { id: "neuaufnahme", label: "1891-1912 Neuaufnahme", tooltip: "1891 - 1912: Preußische Kartenaufnahme 1:25.000; Neuaufnahme", era: eras.preussisch, layer: L.tileLayer.wms('https://www.wms.nrw.de/geobasis/wms_nw_neuaufnahme?', { layers: 'nw_neuaufnahme', minNativeZoom: 12, minZoom: 10, maxZoom: 17, bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], // TODO Do I want to provide a way to turn transparency off for these ones? In addition to having the opacity slider it might be nice to be able to just see the map on its own without the base layer backdrop. transparent: true, // Transparency only works with PNGs. format: 'image/png; mode=8bit', version: '1.3.0', attribution: 'Land NRW (2019), dl-de/by-2-0 (<a href="https://www.govdata.de/dl-de/by-2-0">www.govdata.de/dl-de/by-2-0</a>), <a href="https://www.bezreg-koeln.nrw.de/brk_internet/geobasis/sonstige/historische_karten/1891/index.html">Datensatz</a>' }) }, { id: "meyer", label: "1900 Meyer", tooltip: "Meyers Stadtplan von Köln um 1900", era: eras.preussisch, layer: L.tileLayer('https://mapwarper.net/maps/tile/39790/{z}/{x}/{y}.png', { minZoom: 6, maxZoom: 17, // TODO Restrict bounds even further. bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], attribution: '<a href="https://mapwarper.net/maps/39790">Georeferenzierte Datei</a>' }) }, { id: "tk25", label: "1936-1945 TK25", tooltip: "Topographische Karten - ältere Auflagejahre", era: eras.preussisch, layer: L.tileLayer.wms('https://www.wms.nrw.de/geobasis/wms_nw_tk25_1936-1945?', { layers: 'nw_tk25_1936-1945', minNativeZoom: 15, minZoom: 13, maxZoom: 17, bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], version: '1.3.0', attribution: 'Land NRW (2019), dl-de/by-2-0 (<a href="https://www.govdata.de/dl-de/by-2-0">www.govdata.de/dl-de/by-2-0</a>), <a href="https://www.bezreg-koeln.nrw.de/brk_internet/geobasis/sonstige/topographische_karten_aeltere/index.html">Datensatz</a>' }) }, { id: "hop", label: "1988-1994 Historische Orthophotos", tooltip: "1988-1994 Historische Orthophotos", era: eras.nachkriegszeit, layer: L.tileLayer.wms('https://www.wms.nrw.de/geobasis/wms_nw_histortho_1988-1994?', { layers: 'nw_histortho_1988-1994', minNativeZoom: 15, minZoom: 13, maxZoom: 18, bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], version: '1.3.0', attribution: 'Land NRW (2019), dl-de/by-2-0 (<a href="https://www.govdata.de/dl-de/by-2-0">www.govdata.de/dl-de/by-2-0</a>), <a href="https://www.bezreg-koeln.nrw.de/brk_internet/geobasis/luftbilderzeugnisse/altere_orthophotos/index.html">Datensatz</a>' }) }, { id: "dgk", label: "-2016 Deutsche Grundkarte", tooltip: "Deutsche Grundkarte 1:5.000 (DGK5) – historisch", era: eras.nachkriegszeit, layer: L.tileLayer.wms('https://www.wms.nrw.de/geobasis/wms_nw_dgk5?', { layers: 'nw_dgk5_grundriss', minNativeZoom: 16, minZoom: 13, maxZoom: 18, bounds: [ [50.8304494, 6.7725303], [51.0849743, 7.1620280] ], transparent: true, // Transparency only works with PNGs. format: 'image/png; mode=8bit', version: '1.3.0', attribution: 'Land NRW (2019), dl-de/by-2-0 (<a href="https://www.govdata.de/dl-de/by-2-0">www.govdata.de/dl-de/by-2-0</a>), <a href="https://www.bezreg-koeln.nrw.de/brk_internet/geobasis/sonstige/deutsche_grundkarte/index.html">Datensatz</a>' }) } ];

// TODO Find a way to display the attribution of the layers more clearly. "|" as a separator instead of ",".

var baseLayerOsmElement = mapContainerElement.querySelector(".ak-base-map-selection--osm"); var baseLayerDopElement = mapContainerElement.querySelector(".ak-base-map-selection--dop");

// Keeping track of selected layers. Set initially selected ones. var currentHistLayer = maps[0]; var currentBaseLayer = osmLayer; if (baseLayerToShow) { if (baseLayerToShow === "osm") { currentBaseLayer = osmLayer; } else if (baseLayerToShow === "dop") { currentBaseLayer = dopLayer; baseLayerDopElement.checked = true; } } if (historicalLayerToShow) { for (var i = 0; i < maps.length; i++) { if (maps[i].id === historicalLayerToShow) { currentHistLayer = maps[i]; break; } } }

// Switching between base layers function baseLayerSwitcher() { if (this.checked) { currentBaseLayer.remove(); if (this.value === "osm") { currentBaseLayer = osmLayer; } else { currentBaseLayer = dopLayer; } // TODO Funktioniert nicht. currentBaseLayer.options.minZoom = currentHistLayer.layer.minZoom; currentBaseLayer.options.maxZoom = currentHistLayer.layer.maxZoom; currentBaseLayer.addTo(mapView); currentBaseLayer.bringToBack(); } } baseLayerOsmElement.addEventListener("change", baseLayerSwitcher); baseLayerDopElement.addEventListener("change", baseLayerSwitcher);

// Setting opacity var opacitySliderControl = L.control.opacitySlider({ opacityLayer: currentHistLayer.layer }).addTo(mapView);

// Render radio buttons for historical map switching. var layersListElement = mapContainerElement.querySelector(".ak-map-layers"); maps.forEach(function(map) { var listItemElement = L.DomUtil.create("li", map.era["class"]); listItemElement.setAttribute("title", map.era.tooltip); layersListElement.appendChild(listItemElement); var labelElement = L.DomUtil.create("label"); labelElement.setAttribute("title", map.tooltip); listItemElement.appendChild(labelElement); var inputElement = L.DomUtil.create("input"); inputElement.setAttribute("type", "radio"); inputElement.setAttribute("name", "ak-map-layer-selection"); inputElement.setAttribute("value", map.id); labelElement.appendChild(inputElement); labelElement.appendChild(document.createTextNode(map.label));

if (map === currentHistLayer) { inputElement.checked = true; }

inputElement.addEventListener("change", function() { if (inputElement.checked) { currentHistLayer.layer.remove(); currentHistLayer = map; opacitySliderControl.setOpacityLayer(currentHistLayer.layer); currentHistLayer.layer.addTo(mapView); // TODO check zoom range and bounds of map, adjust mapView accordingly. } });

var mapPageUrl = metadata[map.id]; if (mapPageUrl) { var pageLinkElement = L.DomUtil.create("a"); pageLinkElement.href = mapPageUrl; pageLinkElement.setAttribute("title", "Zur Kartenseite"); pageLinkElement.setAttribute("aria-label", "Zur Kartenseite"); listItemElement.appendChild(pageLinkElement); } });

// Show layers. currentBaseLayer.addTo(mapView); currentHistLayer.layer.addTo(mapView);

// Load data layer if provided. if (geoJsonDataLayerUrl) { loadJson(geoJsonDataLayerUrl, function(data) { var options = { // TODO add tooltips/markers/styles etc. from data using onEachFeature/style function options, implementing <https://github.com/mapbox/simplestyle-spec/tree/master/1.1.0>. // see <https://leafletjs.com/reference-1.5.0.html#geojson>. style: function(geoJsonFeature) { return { interactive: false }; } }; if (data.attributionText && data.attributionUrl) { // Create as DOM node and then convert back to text to escape attribution content and prevent XSS attacks. var attributionLinkElement = L.DomUtil.create("a"); attributionLinkElement.href = data.attributionUrl; attributionLinkElement.appendChild(document.createTextNode(data.attributionText)); options.attribution = attributionLinkElement.outerHTML; } var dataLayer = L.geoJSON(data, options); dataLayer.addTo(mapView); // Set view and zoom around shapes being shown. // TODO Might want to introduce some padding later. But consider <https://stackoverflow.com/a/55173276>. // TODO This does a really visible zoom out / movement which might be nauseating. Maybe we can load the data earlier (in parallel to waiting for DOMContentLoaded) and only render the map once it is available (with a timeout). mapView.fitBounds(dataLayer.getBounds()); }, function() { mapView.openPopup("Die Daten für das anzuzeigende Objekt konnten leider nicht geladen werden. 🙁", mapView.getCenter()); }); }

if (poiDataLayerUrl) { loadJson(poiDataLayerUrl, function(response) { var data = convertSmwResultToGeoJson(response); var options = { pointToLayer: function(geoJsonPoint, latlng) { var options = { riseOnHover: true }; if (geoJsonPoint.properties && geoJsonPoint.properties.title) { options.title = geoJsonPoint.properties.title; } return L.marker(latlng, options); }, onEachFeature: function(feature, layer) { if (feature.properties && (feature.properties.description || feature.properties.url || feature.properties.pictureUrl)) { var popupContent = ""; if (feature.properties.title) { if (feature.properties.url) {

popupContent += "

<a href=\"" + feature.properties.url + "\">" + feature.properties.title + "</a>

";

} else {

popupContent += "

" + feature.properties.title + "

";

} } if (feature.properties.description) {

popupContent += "

" + feature.properties.description + "

";

} if (feature.properties.pictureUrl) {

popupContent += "

<img src=\"" + feature.properties.pictureUrl + "\" />

";

} if (feature.properties.url && !feature.properties.title) {

popupContent += "

<a href=\"" + feature.properties.url + "\">Seite besuchen</a>

";

} layer.bindPopup(popupContent); } } }; var dataLayer = L.geoJSON(data, options); dataLayer.addTo(mapView); }, function() { mapView.openPopup("Die anzuzeigenden Daten konnten leider nicht geladen werden. 🙁", mapView.getCenter()); }); } }

function convertSmwResultToGeoJson(response) { var results = response.query.results; var geoJson = { "type": "FeatureCollection", "features": [] }; geoJson.features = results.map(function(result) { // For some reason the actual semantic object is in a property in the result object, with the key being the id of the object. // Since we don't know the id in advance we have to fetch it as the first (and hopefully only) key of the object. var object = result[Object.keys(result)[0]]; // Can't handle results without coordinates, so skip this one. if (typeof object.printouts.Position === "undefined" || object.printouts.Position.length === 0) { return null; } var feature = { "type": "Feature", "geometry": { "type": "Point", "coordinates": [object.printouts.Position[0].lon, object.printouts.Position[0].lat] }, "properties": {} }; if (typeof object.printouts.Name !== "undefined" && object.printouts.Name.length) { feature.properties.title = object.printouts.Name[0]; } if (typeof object.printouts.Kurzbeschreibung !== "undefined" && object.printouts.Kurzbeschreibung.length) { feature.properties.description = object.printouts.Kurzbeschreibung[0]; } if (typeof object.printouts["Siehe auch"] !== "undefined" && object.printouts["Siehe auch"].length) { feature.properties.url = object.printouts["Siehe auch"][0]; } if (typeof object.printouts.Bild !== "undefined" && object.printouts.Bild.length) { feature.properties.pictureUrl = object.printouts.Bild[0]; } return feature; }).filter(function(e) { // Since we might have skipped some invalid results by returning null, we need to filter them out. return e != null; }); return geoJson; }

function parseMetadata(metadataElements) { var metadata = {}; for (var i = 0; i < metadataElements.length; i++) { var element = metadataElements.item(i); var queryRowElements = element.querySelectorAll(".smw-format.ul-format .smw-row"); forEachElement(queryRowElements, function(row) { var anchorElement = row.querySelector(".smw-field:first-child .smw-value a"); var url = anchorElement.href; var idValueElement = row.querySelector(".smw-field:last-child .smw-value"); var id = idValueElement.textContent; metadata[id] = url; }); } return metadata; }

function forEachElement(nodeList, callback) { if (nodeList.forEach) { nodeList.forEach(callback); } else { Array.prototype.forEach.call(nodeList, callback); } }

var getQueryParameter = (function() { var query = window.location.search.substring(1); var params = query.split("&"); params = params.map(function(param) { var pair = param.split("="); pair[0] = decodeURIComponent(pair[0]); if (pair.length > 1) { pair[1] = decodeURIComponent(pair[1]); } return pair; }); return function(parameterName) { for (var i = 0; i < params.length; i++) { if (params[i][0] === parameterName) { if (params[i].length > 1) { return params[i][1]; } return ""; } } return undefined; }; })();

function loadJson(url, onSuccess, onFailure) { var request = new XMLHttpRequest(); request.open("GET", url, true);

request.onload = function() { if (request.status >= 200 && request.status < 400) { var data; try { data = JSON.parse(request.responseText); } catch(error) { callSafely(onFailure, error); return; } callSafely(onSuccess, data); } else { callSafely(onFailure); } };

request.onerror = function() { callSafely(onFailure); };

request.send(); }

function callSafely(callback) { if (callback) { callback.apply(null, Array.prototype.slice.call(arguments, 1)); } }

function getGeoJsonDataLayerUrl() { var dataLayer = getQueryParameter("dataLayer"); if (dataLayer) { // TODO also check for https://www.mediawiki.org/wiki/Manual:Page_title // Base names equal to "." or "..", or beginning "./" or "../", or containing "/./" or "/../", or ending "/." or "/..". // ? if (dataLayer.indexOf("GeoJson:") === 0 && dataLayer.indexOf("?") === -1 && dataLayer.indexOf("&") === -1 && dataLayer.indexOf("=") === -1 && dataLayer.indexOf("/..") === -1) { // TODO relative url? return "https://altes-koeln.de/wiki/" + dataLayer + "?action=raw&ctype=application/json"; } } return undefined; }

function getPoiDataLayerUrl() { var poiConcept = getQueryParameter("pois"); if (poiConcept) { // TODO Check the rest is a valid page name? if (poiConcept.indexOf("Concept:") === 0) { return "https://altes-koeln.de/api.php?action=askargs&conditions=" + poiConcept + "&printouts=Name|Position|Kurzbeschreibung|Siehe%20auch|Bild&format=json&api_version=3"; } } return undefined; }

// Initialise all found maps when DOM is ready. document.addEventListener("DOMContentLoaded", function(event) { var mapContainerElements = document.getElementsByClassName("ak-map-container");

var metadataElements = document.getElementsByClassName("ak-map-metadata"); var metadata = parseMetadata(metadataElements);

for (var i = 0; i < mapContainerElements.length; i++) { initMap(mapContainerElements.item(i), metadata, getQueryParameter("baseLayer"), getQueryParameter("histLayer"), getGeoJsonDataLayerUrl(), getPoiDataLayerUrl()); } }); })(); </script>

<form class="ak-map-sidebar" autocomplete="off"> <fieldset> <legend>Basiskarte</legend>

  • <label><input type="radio" class="ak-base-map-selection--osm" name="ak-base-map-selection" value="osm" checked>OpenStreetMap</label>
  • <label><input type="radio" class="ak-base-map-selection--dop" name="ak-base-map-selection" value="dop">Digitale Orthophotos</label>

</fieldset> <fieldset> <legend>Historische Karten</legend>

</fieldset> <fieldset> <legend>Zeiträume Köln</legend>

</fieldset> </form>

Abgerufen von „https://altes-koeln.de/index.php?title=Widget:Karte&oldid=69790“
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