| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 { getTaskCenter } from './operation' |
| |
| let Element |
| |
| export function setElement (El) { |
| Element = El |
| } |
| |
| /** |
| * A map which stores all type of elements. |
| * @type {Object} |
| */ |
| const registeredElements = {} |
| |
| /** |
| * Register an extended element type with component methods. |
| * @param {string} type component type |
| * @param {array} methods a list of method names |
| */ |
| export function registerElement (type, methods) { |
| // Skip when no special component methods. |
| if (!methods || !methods.length) { |
| return |
| } |
| |
| // Init constructor. |
| class WeexElement extends Element {} |
| |
| // Add methods to prototype. |
| methods.forEach(methodName => { |
| WeexElement.prototype[methodName] = function (...args) { |
| const taskCenter = getTaskCenter(this.docId) |
| if (taskCenter) { |
| return taskCenter.send('component', { |
| ref: this.ref, |
| component: type, |
| method: methodName |
| }, args) |
| } |
| } |
| }) |
| |
| // Add to element type map. |
| registeredElements[type] = WeexElement |
| } |
| |
| export function unregisterElement (type) { |
| delete registeredElements[type] |
| } |
| |
| export function getWeexElement (type) { |
| return registeredElements[type] |
| } |
| |
| export function isWeexElement (type) { |
| return !!registeredElements[type] |
| } |
| |
| /** |
| * Clear all element types. Only for testing. |
| */ |
| export function clearWeexElements () { |
| for (const type in registeredElements) { |
| unregisterElement(type) |
| } |
| } |