LiveAtlas/src/util/points.ts
2022-02-27 16:22:29 +00:00

103 lines
3.0 KiB
TypeScript

/*
* Copyright 2022 James Lyne
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {LeafletMouseEvent} from "leaflet";
import {GenericIcon} from "@/leaflet/icon/GenericIcon";
import {GenericMarker} from "@/leaflet/marker/GenericMarker";
import {LiveAtlasPointMarker} from "@/index";
/**
* Creates a {@link GenericMarker} with the given options
* @param {LiveAtlasPointMarker} options Marker options
* @param {Function} converter Function for projecting the marker location onto the map
* @return The created GenericMarker
*/
export const createPointLayer = (options: LiveAtlasPointMarker, converter: Function): GenericMarker => {
const marker = new GenericMarker(converter(options.location), options);
marker.on('click', (e: LeafletMouseEvent) => {
if(!e.target.getPopup() || e.target.isPopupOpen()) {
e.target._map.panTo(e.target.getLatLng());
}
});
if(options.popup) {
marker.bindPopup(() => createPopup(options));
}
return marker;
};
/**
* Updates or creates a {@link GenericMarker} with the given options
* @param {?GenericMarker} marker Optional existing GenericMarker to update
* @param {LiveAtlasPointMarker} options Marker options
* @param {Function} converter Function for projecting the marker location onto the map
* @returns The created or updated GenericMarker
*/
export const updatePointLayer = (marker: GenericMarker | undefined, options: LiveAtlasPointMarker, converter: Function): GenericMarker => {
if (!marker) {
return createPointLayer(options, converter);
}
const oldLocation = marker.getLatLng(),
newLocation = converter(options.location);
if(!oldLocation.equals(newLocation)) {
marker.setLatLng(newLocation);
}
if(marker instanceof GenericMarker) {
const icon = marker.getIcon();
if(icon && icon instanceof GenericIcon) {
icon.update({
iconUrl: options.iconUrl,
label: options.tooltipHTML || options.tooltip,
iconSize: options.iconSize,
iconAnchor: options.iconAnchor,
isHtml: !!options.tooltipHTML,
});
}
}
marker.closePopup();
marker.unbindPopup();
if(options.popup) {
marker.bindPopup(() => createPopup(options));
}
return marker;
};
/**
* Creates a popup element for the given marker
* @param {LiveAtlasPointMarker} options Marker options
* @returns {HTMLSpanElement} The marker element
* @private
*/
const createPopup = (options: LiveAtlasPointMarker) => {
const popup = document.createElement('span');
if (options.popup) {
popup.classList.add('MarkerPopup');
popup.insertAdjacentHTML('afterbegin', options.popup);
}
return popup;
}