import { Injectable, Inject, Injector } from '@angular/core';
|
import { Router } from '@angular/router';
|
import { Observable, BehaviorSubject } from 'rxjs';
|
import { filter } from 'rxjs/operators';
|
|
import { en_US, zh_CN, NzI18nService } from 'ng-zorro-antd';
|
import * as df_en from 'date-fns/locale/en';
|
import * as df_zh_cn from 'date-fns/locale/zh_cn';
|
import { TranslateService } from '@ngx-translate/core';
|
import { SettingsService, AlainI18NService } from '@delon/theme';
|
|
@Injectable()
|
export class I18NService implements AlainI18NService {
|
private _default = 'zh-CN';
|
private change$ = new BehaviorSubject<string>(null);
|
|
private _langs = [
|
{ code: 'zh-CN', text: '中文' },
|
{ code: 'en', text: 'English' },
|
];
|
|
constructor(
|
settings: SettingsService,
|
private nzI18nService: NzI18nService,
|
private translate: TranslateService,
|
private injector: Injector,
|
) {
|
const defaultLan = settings.layout.lang || translate.getBrowserLang();
|
const lans = this._langs.map(item => item.code);
|
this._default = lans.includes(defaultLan) ? defaultLan : lans[0];
|
translate.addLangs(lans);
|
this.setZorro(this._default).setDateFns(this._default);
|
}
|
|
setZorro(lang: string): this {
|
this.nzI18nService.setLocale(lang === 'en' ? en_US : zh_CN);
|
return this;
|
}
|
|
setDateFns(lang: string): this {
|
(window as any).__locale__ = lang === 'en' ? df_en : df_zh_cn;
|
return this;
|
}
|
|
get change(): Observable<string> {
|
return this.change$.asObservable().pipe(filter(w => w != null));
|
}
|
|
use(lang: string): void {
|
lang = lang || this.translate.getDefaultLang();
|
if (this.currentLang === lang) return;
|
this.setZorro(lang).setDateFns(lang);
|
this.translate.use(lang).subscribe(() => this.change$.next(lang));
|
}
|
/** 获取语言列表 */
|
getLangs() {
|
return this._langs;
|
}
|
/** 翻译 */
|
fanyi(key: string) {
|
return this.translate.instant(key);
|
}
|
/** 默认语言 */
|
get defaultLang() {
|
return this._default;
|
}
|
/** 当前语言 */
|
get currentLang() {
|
return (
|
this.translate.currentLang ||
|
this.translate.getDefaultLang() ||
|
this._default
|
);
|
}
|
}
|
