packages/remote-context/src/actions/LocalDefinePropertyAction.js
/**
* Copyright 2017 Moshe Simantov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import ReferencePropertyAction from './ReferencePropertyAction';
import PropertyDescriptorAction from './PropertyDescriptorAction';
export default class LocalDefinePropertyAction extends ReferencePropertyAction {
static fromRemote(session, reference, property, descriptor) {
return new this(
reference,
session.dispatch(property),
PropertyDescriptorAction.fromPropertyDescriptor(session, descriptor)
);
}
constructor(reference, property, descriptor) {
if (!(descriptor instanceof PropertyDescriptorAction)) {
throw new TypeError(
`Expect descriptor to be instance of PropertyDescriptorAction: ${
descriptor
}`
);
}
super(reference, property);
this.descriptor = descriptor;
}
fetch(session) {
const target = session.get(this.reference);
if (!session.isWritable(target)) {
throw new TypeError(
`Can't define property of a read-only object: ${target}`
);
}
const property = session.fetch(this.property);
const descriptor = session.fetch(this.descriptor);
return Reflect.defineProperty(target, property, descriptor);
}
exec(session) {
this.fetch(session);
}
toArgumentsList() {
return [this.reference, this.property, this.descriptor];
}
}