1/**
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15export class Callback {
16  // message 方法接受一个字符串或数字类型的参数，并返回 void
17  message(message: string | number): void{
18    // 在这里实现回调逻辑
19    console.log(`Callback received message: ${message}`);
20  }
21}
22
23export class MessageManager {
24    callback?: Callback | null
25    callbacks:Map<string,Callback> = new Map()
26
27    constructor() {
28
29    }
30
31  registerCallback(callback:Callback , type?:string) {
32    if (type == undefined) {
33      console.error('registerCallback callback set')
34      this.callback = callback
35      return
36    }
37    this.callbacks.set(type,callback)
38  }
39
40  notify(message:string, type?:string) {
41    if (type == undefined) {
42      this.callback!.message
43      return
44    }
45
46    let tmpCallback:Callback | undefined = this.callbacks.get(type)
47    if (tmpCallback === undefined) {
48      console.error('callbacks has no callback for type ' + type)
49      return
50    }
51    tmpCallback.message(message)
52  }
53
54   clear() {
55    this.callbacks.clear()
56    this.callback = null
57  }
58}