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Further refactoring

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This commit is contained in:
Pieter Vander Vennet 2021-01-02 21:03:40 +01:00
parent e4a2fd1daf
commit 7a7b34b0fa
17 changed files with 350 additions and 297 deletions
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44
Logic/Actors/LayerResetter.ts Normal file
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import {UIEventSource} from "../UIEventSource";
import {BaseLayer} from "../../Models/BaseLayer";
import AvailableBaseLayers from "./AvailableBaseLayers";
import Loc from "../../Models/Loc";
/**
* Sets the current background layer to a layer that is actually available
*/
export default class LayerResetter {
constructor( currentBackgroundLayer: UIEventSource<BaseLayer>,
location: UIEventSource<Loc>,
availableLayers: UIEventSource<BaseLayer[]>,
defaultLayerId: UIEventSource<string> = undefined) {
defaultLayerId = defaultLayerId ?? new UIEventSource<string>(AvailableBaseLayers.osmCarto.id);
// Change the baselayer back to OSM if we go out of the current range of the layer
availableLayers.addCallbackAndRun(availableLayers => {
let defaultLayer = undefined;
const currentLayer = currentBackgroundLayer.data.id;
for (const availableLayer of availableLayers) {
if (availableLayer.id === currentLayer) {
if (availableLayer.max_zoom < location.data.zoom) {
break;
}
if (availableLayer.min_zoom > location.data.zoom) {
break;
}
if(availableLayer.id === defaultLayerId.data){
defaultLayer = availableLayer;
}
return; // All good - the current layer still works!
}
}
// Oops, we panned out of range for this layer!
console.log("AvailableBaseLayers-actor: detected that the current bounds aren't sufficient anymore - reverting to OSM standard")
currentBackgroundLayer.setData(defaultLayer ?? AvailableBaseLayers.osmCarto);
});
}
}