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OsmObjects can now be used as featureSource, load selected object immediately, zoom to selected object on open; fix #191

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This commit is contained in:
Pieter Vander Vennet 2021-05-06 01:33:09 +02:00
parent 5ce4140510
commit a0c1bc2137
13 changed files with 205 additions and 98 deletions
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39
Logic/Actors/SelectedFeatureHandler.ts
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@ -1,8 +1,12 @@
import {UIEventSource} from "../UIEventSource";
import FeatureSource from "../FeatureSource/FeatureSource";
import {OsmObject, OsmObjectMeta} from "../Osm/OsmObject";
import Loc from "../../Models/Loc";
import FeaturePipeline from "../FeatureSource/FeaturePipeline";
import OsmApiFeatureSource from "../FeatureSource/OsmApiFeatureSource";
/**
* Makes sure the hash shows the selected element and vice-versa
* Makes sure the hash shows the selected element and vice-versa.
*/
export default class SelectedFeatureHandler {
private readonly _featureSource: FeatureSource;
@ -10,13 +14,16 @@ export default class SelectedFeatureHandler {
private readonly _selectedFeature: UIEventSource<any>;
private static readonly _no_trigger_on = ["welcome","copyright","layers"]
private readonly _osmApiSource: OsmApiFeatureSource;
constructor(hash: UIEventSource<string>,
selectedFeature: UIEventSource<any>,
featureSource: FeatureSource) {
featureSource: FeaturePipeline,
osmApiSource: OsmApiFeatureSource) {
this._hash = hash;
this._selectedFeature = selectedFeature;
this._featureSource = featureSource;
this._osmApiSource = osmApiSource;
const self = this;
hash.addCallback(h => {
if (h === undefined || h === "") {
@ -26,6 +33,8 @@ export default class SelectedFeatureHandler {
}
})
hash.addCallbackAndRun(h => self.downloadFeature(h))
featureSource.features.addCallback(_ => self.selectFeature());
selectedFeature.addCallback(feature => {
@ -45,6 +54,32 @@ export default class SelectedFeatureHandler {
}
// If a feature is selected via the hash, zoom there
public zoomToSelectedFeature(location: UIEventSource<Loc>){
const hash = this._hash.data;
if(hash === undefined || SelectedFeatureHandler._no_trigger_on.indexOf(hash) >= 0){
return; // No valid feature selected
}
// We should have a valid osm-ID and zoom to it
OsmObject.DownloadObject(hash, (element: OsmObject, meta: OsmObjectMeta) => {
const centerpoint = element.centerpoint();
console.log("Zooming to location for select point: ", centerpoint)
location.data.lat = centerpoint[0]
location.data.lon = centerpoint[1]
location.ping();
})
}
private downloadFeature(hash: string){
if(hash === undefined || hash === ""){
return;
}
if(SelectedFeatureHandler._no_trigger_on.indexOf(hash) >= 0){
return;
}
this._osmApiSource.load(hash)
}
private selectFeature(){
const features = this._featureSource?.features?.data;
if(features === undefined){