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added new decorator for metadata representations

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lotte
2019-09-27 16:58:24 +02:00
parent 20274bd4af
commit 5353e889a3
5 changed files with 53 additions and 33 deletions
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44
src/app/shared/metadata-representation/metadata-representation.decorator.ts Normal file
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import { MetadataRepresentationType } from '../../core/shared/metadata-representation/metadata-representation.model';
import { hasNoValue, hasValue } from '../empty.util';
import { Context } from '../../core/shared/context.model';
import { DEFAULT_ITEM_TYPE } from '../items/item-type-decorator';
const map = new Map();
export const DEFAULT_REPRESENTATION_TYPE = MetadataRepresentationType.PlainText;
export const DEFAULT_CONTEXT = Context.Undefined;
export function metadataRepresentationComponent(entityType: string, mdRepresentationType: MetadataRepresentationType, context: Context = DEFAULT_CONTEXT) {
return function decorator(component: any) {
if (hasNoValue(map.get(entityType))) {
map.set(entityType, new Map());
}
if (hasNoValue(map.get(entityType).get(mdRepresentationType))) {
map.get(entityType).set(mdRepresentationType, new Map());
}
if (hasValue(map.get(entityType).get(mdRepresentationType).get(context))) {
throw new Error(`There can't be more than one component to render Entity of type "${entityType}" in MetadataRepresentation "${mdRepresentationType}" with context "${context}"`);
}
map.get(entityType).get(mdRepresentationType).set(context, component);
}
}
export function getMetadataRepresentationComponent(entityType: string, mdRepresentationType: MetadataRepresentationType, context: Context = DEFAULT_CONTEXT) {
if (hasNoValue(entityType) || hasNoValue(map.get(entityType))) {
entityType = DEFAULT_ITEM_TYPE;
}
if (hasNoValue(map.get(entityType).get(mdRepresentationType))) {
mdRepresentationType = DEFAULT_REPRESENTATION_TYPE;
}
let representationComponent = map.get(entityType).get(mdRepresentationType).get(context);
if (hasNoValue(representationComponent)) {
representationComponent = map.get(entityType).get(mdRepresentationType).get(DEFAULT_REPRESENTATION_TYPE);
}
return representationComponent;
}