// 樹(shù)對(duì)象 - 文件目錄
class CFolder {
constructor(name) {
this.name = name;
this.files = [];
}
add(file) {
this.files.push(file);
}
scan() {
for (let file of this.files) {
file.scan();
}
}
}
// 葉對(duì)象 - 文件
class CFile {
constructor(name) {
this.name = name;
}
add(file) {
throw new Error('文件下面不能再添加文件');
}
scan() {
console.log(`開(kāi)始掃描文件：${this.name}`);
}
}
let mediaFolder = new CFolder('娛樂(lè)');
let movieFolder = new CFolder('電影');
let musicFolder = new CFolder('音樂(lè)');
let file1 = new CFile('鋼鐵俠.mp4');
let file2 = new CFile('再談?dòng)洃?mp3');
movieFolder.add(file1);
musicFolder.add(file2);
mediaFolder.add(movieFolder);
mediaFolder.add(musicFolder);
mediaFolder.scan();

// 定義接口規(guī)范
interface Compose {
name: string,
add(file: CFile): void,
scan(): void
}
// 樹(shù)對(duì)象 - 文件目錄
class CFolder implements Compose {
fileList = [];
name: string;
constructor(name: string) {
this.name = name;
}
add(file: CFile) {
this.fileList.push(file);
}
scan() {
for (let file of this.fileList) {
file.scan();
}
}
}
// 葉對(duì)象 - 文件
class CFile implements Compose {
name: string;
constructor(name: string) {
this.name = name;
}
add(file: CFile) {
throw new Error('文件下面不能再添加文件');
}
scan() {
console.log(`開(kāi)始掃描：${this.name}`)
}
}
let mediaFolder = new CFolder('娛樂(lè)');
let movieFolder = new CFolder('電影');
let musicFolder = new CFolder('音樂(lè)');
let file1 = new CFile('鋼鐵俠.mp4');
let file2 = new CFile('再談?dòng)洃?mp3');
movieFolder.add(file1);
musicFolder.add(file2);
mediaFolder.add(movieFolder);
mediaFolder.add(musicFolder);
mediaFolder.scan();