52 lines
No EOL
2 KiB
TypeScript
52 lines
No EOL
2 KiB
TypeScript
import FeatureSource from "./FeatureSource";
|
|
import {UIEventSource} from "../UIEventSource";
|
|
import State from "../../State";
|
|
import Hash from "../Web/Hash";
|
|
import MetaTagging from "../MetaTagging";
|
|
|
|
export default class MetaTaggingFeatureSource implements FeatureSource {
|
|
public readonly features: UIEventSource<{ feature: any; freshness: Date }[]> = new UIEventSource<{ feature: any; freshness: Date }[]>(undefined);
|
|
|
|
public readonly name;
|
|
|
|
/***
|
|
* Constructs a new metatagger which'll calculate various tags
|
|
* @param allFeaturesSource: A source where all the currently known features can be found - used to calculate overlaps etc
|
|
* @param source: the source of features that should get their metatag and which should be exported again
|
|
* @param updateTrigger
|
|
*/
|
|
constructor(allFeaturesSource: UIEventSource<{ feature: any; freshness: Date }[]>, source: FeatureSource, updateTrigger?: UIEventSource<any>) {
|
|
const self = this;
|
|
this.name = "MetaTagging of " + source.name
|
|
|
|
if (allFeaturesSource === undefined) {
|
|
throw ("UIEVentSource is undefined")
|
|
}
|
|
|
|
function update() {
|
|
const featuresFreshness = source.features.data
|
|
if (featuresFreshness === undefined) {
|
|
return;
|
|
}
|
|
featuresFreshness.forEach(featureFresh => {
|
|
const feature = featureFresh.feature;
|
|
|
|
if (Hash.hash.data === feature.properties.id) {
|
|
State.state.selectedElement.setData(feature);
|
|
}
|
|
})
|
|
|
|
MetaTagging.addMetatags(featuresFreshness,
|
|
allFeaturesSource,
|
|
State.state.knownRelations.data, State.state.layoutToUse.data.layers);
|
|
self.features.setData(featuresFreshness);
|
|
}
|
|
|
|
source.features.addCallbackAndRun(_ => update());
|
|
updateTrigger?.addCallback(_ => {
|
|
console.debug("Updating because of external call")
|
|
update();
|
|
})
|
|
}
|
|
|
|
} |