element-stub.js

/**
 * Copyright 2015 The AMP HTML Authors. All Rights Reserved.
 *
 * 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 {BaseElement} from './base-element';
import {devAssert} from './log';

/** @type {!Array} */
export const stubbedElements = [];

export class ElementStub extends BaseElement {
  /** @param {!AmpElement} element */
  constructor(element) {
    super(element);
    stubbedElements.push(this);
  }

  /** @override */
  getLayoutPriority() {
    return devAssert(0, 'Cannot get priority of stubbed element');
  }

  /** @override */
  isLayoutSupported(unusedLayout) {
    // Always returns true and will eventually call this method on the actual
    // element.
    return true;
  }

  /** @override */
  reconstructWhenReparented() {
    // No real state so no reason to reconstruct.
    return false;
  }
}