relation.js
1.5 KB
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export function useParent(name, onEffect) {
const path = `../${name}/index`;
return {
relations: {
[path]: {
type: 'ancestor',
linked() {
onEffect && onEffect.call(this);
},
linkChanged() {
onEffect && onEffect.call(this);
},
unlinked() {
onEffect && onEffect.call(this);
},
},
},
mixin: Behavior({
created() {
Object.defineProperty(this, 'parent', {
get: () => this.getRelationNodes(path)[0],
});
Object.defineProperty(this, 'index', {
// @ts-ignore
get: () => {
var _a, _b;
return (_b =
(_a = this.parent) === null || _a === void 0
? void 0
: _a.children) === null || _b === void 0
? void 0
: _b.indexOf(this);
},
});
},
}),
};
}
export function useChildren(name, onEffect) {
const path = `../${name}/index`;
return {
relations: {
[path]: {
type: 'descendant',
linked(target) {
onEffect && onEffect.call(this, target);
},
linkChanged(target) {
onEffect && onEffect.call(this, target);
},
unlinked(target) {
onEffect && onEffect.call(this, target);
},
},
},
mixin: Behavior({
created() {
Object.defineProperty(this, 'children', {
get: () => this.getRelationNodes(path) || [],
});
},
}),
};
}