在Angular中可以将点击事件从组件动态绑定到页面上的现有组件。为了说明,我包括了此screenshot。
该应用现在由4个简单的组件组成;一个定义全局布局的shell组件,在shell组件中,我有一个标头组件(蓝色轮廓)和一个导航组件(红色轮廓)。绿色组件是当前路线加载的组件。
我正在使用简单的服务来更新导航组件,如下所示:
@Injectable({ providedIn: 'root' })
export class NavigationService {
private titleSource = new Subject<string>();
private actionsSource = new Subject<ActionButton[]>();
private menuItemsSource = new Subject<MenuItem[]>();
title = this.titleSource.asObservable();
actions = this.actionsSource.asObservable();
menuItems = this.menuItemsSource.asObservable();
constructor() {
}
setTitle(title: string) {
this.titleSource.next(title);
}
setActions(actions: ActionButton[]) {
this.actionsSource.next(actions);
}
setMenuItems(menuItems: MenuItem[]) {
this.menuItemsSource.next(menuItems);
}
}
导航组件只是像这样使用此服务:
@Component({
selector: 'app-navigation',
templateUrl: './navigation.component.html'
})
export class NavigationComponent implements OnInit {
title: string = "";
actions: ActionButton[] = [];
menuItems: MenuItem[] = [];
constructor(private navigation: NavigationService) {
navigation.title.subscribe((title) => this.title = title);
navigation.actions.subscribe((actions) => this.actions = actions);
navigation.menuItems.subscribe((menuItems) => this.menuItems = menuItems);
}
}
并显示如下:
<div class="navigation">
<div *ngIf="title.length" class="navigation__title">
<h1>{{title}}</h1>
</div>
<div class="navigation__menu">
<ul>
<li *ngFor="let menuItem of menuItems" [routerLinkActive]="['active']">
<a routerLink="{{menuItem.path}}">{{menuItem.title}}</a>
</li>
</ul>
</div>
<div class="navigation__actions">
<a *ngFor="let actionButton of actions" class="btn btn--primary">{{actionButton.title}}</a>
</div>
</div>
然后在当前激活的组件(绿色组件)中,设置标题和类似的项目
....
constructor(private employeeService: EmployeeService, private navigation: NavigationService, private drawerService: NzDrawerService) {
navigation.setTitle('');
navigation.setActions([
{
path: '',
title: 'Add Employee'
}
]);
navigation.setMenuItems([
{
path: '/employees',
title: 'Employees'
},
{
path: '/teams',
title: 'Teams'
}
]);
}
....
在同一活动组件中,我也定义了此方法:
createEmployee() {
const drawer = this.drawerService.create<CreateEmployeeComponent>({
nzContent: CreateEmployeeComponent,
nzClosable: false,
nzWidth: '33%',
});
drawer.afterClose.subscribe(data => {
this.loadEmployees();
});
}
现在我的问题是,当我单击导航组件上呈现的按钮时,是否可以以某种方式调用此方法。并从当前激活的组件中动态设置它,就像我已经为标题和导航项所做的一样]
在Angular中可以将点击事件从组件动态绑定到页面上的现有组件。为了说明这一点,我提供了此屏幕截图。该应用程序包含4个简单的组件...
您可以为此使用Object orientation