目的
離開頁面時,做出邏輯判斷
以ng-alain的項目為基礎做演示
效果如圖:
關鍵代碼
定義一個CanDeactivateGuardService
export class CanDeactivateGuardService implements CanDeactivate<CanDeactivateComponent> {
canDeactivate(component: CanDeactivateComponent,
route: ActivatedRouteSnapshot,
state: RouterStateSnapshot): Observable<boolean> | boolean {
return component.leaveTip();
}
}
在component中完成leaveTip方法
leaveTip() {
return Observable.create((observer) => {
if(!this.isSave){
this.modalService.confirm({
nzTitle: '頁面離開提示',
nzContent: '數據尚未保存,是否離開該頁面?',
nzOnOk: async () => {
observer.next(true);
},
nzOnCancel: () => {
observer.next(false);
}
});
}
else{
observer.next(true);
}
});
}
設置ng-alain的ReuseTabMatchMode,排除can-deactivate這個目標路由
this.reuseTabService.mode = ReuseTabMatchMode.URL;
const excludes = new Array<RegExp>();
excludes.push(new RegExp('/can-deactivate'));
this.reuseTabService.excludes = excludes;
示例代碼
參考資料
feat(abc: reuse-tab): new reuse-tab component plans!