Angular 6 how to show spinner on menu item or hyperlink click












0















I would like to show a processing spinner in my Angular 6 app sidenav and home component as soon as a menu item, a route link or a hyperlink is clicked. Here are the HomeComponent and SideNav. I also have a spinner in the datasource component and it is working when the app makes connection to the webapi service. I copied the code to the SideNav and Home, but it is not displayed. Thanks for your help.






@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
private spinnerSubject = new BehaviorSubject<boolean> (false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();
spinnerColor = 'warn';

constructor(
private router: Router,
private activatedRoute: ActivatedRoute) {

activatedRoute.url.subscribe((s: UrlSegment) => {

});
}

ngOnInit() {

}

appCardClicked(routePath: string) {
this.spinnerSubject.next(true);
this.router.navigate([routePath], {
replaceUrl: true
});
// this.spinnerSubject.next(false);
}
}








<div class="spinner-container">
<mat-spinner [color]="spinnerColor" *ngIf="loading$ | async"></mat-spinner>
</div>

<mat-card class="app-card" (click)="appCardClicked('/lccp')">
<mat-card-content>
<p>
A summary goes here.
</p>
</mat-card-content>
<mat-card-actions>
<button mat-button>LIKE</button>
<button mat-button>SHARE</button>
</mat-card-actions>
</mat-card>








@Component({
// tslint:disable-next-line:component-selector
selector: 'vertical-nav',
templateUrl: './nav.component.html',
styleUrls: ['./nav.component.css']
})
export class NavComponent implements OnInit, AfterViewInit, AfterContentInit {
private spinnerSubject = new BehaviorSubject<boolean>(false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();

routerLinkClicked(): void {
this.spinnerSubject.next(true);
}

ngAfterContentInit(): void {
this.spinnerSubject.next(false);
}
}








<mat-sidenav-container class="sidenav-container">
<mat-sidenav #drawer class="sidenav" fixedInViewport="true" [attr.role]="(isHandset$ | async) ? 'dialog' : 'navigation'" [mode]="(isHandset$ | async) ? 'over' : 'side'" [opened]="menuIsOpened || (isHandset$ | async)">
<mat-toolbar class="darkNavy">
<img src="assets/logo.gif" routerLink="/home" style="padding-top:40px" alt="logo" />
</mat-toolbar>
<mat-nav-list style="padding-top:50px">
<a *ngFor="let item of verticleMenu" mat-list-item routerLink="{{item.RouteLink}}" (click)="routerLinkClicked()">
{{item.Title}}
</a>
</mat-nav-list>
</mat-sidenav>
<mat-sidenav-content>
<mat-toolbar class="darkNavy">
<mat-nav-list>
<div class='menu' style="display:flex; align-items: flex-end">
<i class="material-icons" aria-label="Side nav toggle icon" (click)="toggleMenu()" matTooltip="menu">menu

<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</i>
<span *ngFor="let item of horizontalMenu" mat-list-item routerLink="{{item.RouteLink}}">&nbsp;
{{item.Title}}
</span>
</div>
</mat-nav-list>
</mat-toolbar>

<ng-content>
<!-- routed content is projected here -->
</ng-content>
<div class="spinner-container" *ngIf="loading$ | async" role="presentation">
<mat-spinner [color]="spinnerColor"></mat-spinner>
</div>
</mat-sidenav-content>
</mat-sidenav-container>












share|improve this question

























  • This should work. Sample Stackblitz

    – Jeto
    Nov 13 '18 at 18:44











  • Thanks. It's identical to what I have. It doesn't work on my app.

    – user266909
    Nov 13 '18 at 20:24
















0















I would like to show a processing spinner in my Angular 6 app sidenav and home component as soon as a menu item, a route link or a hyperlink is clicked. Here are the HomeComponent and SideNav. I also have a spinner in the datasource component and it is working when the app makes connection to the webapi service. I copied the code to the SideNav and Home, but it is not displayed. Thanks for your help.






@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
private spinnerSubject = new BehaviorSubject<boolean> (false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();
spinnerColor = 'warn';

constructor(
private router: Router,
private activatedRoute: ActivatedRoute) {

activatedRoute.url.subscribe((s: UrlSegment) => {

});
}

ngOnInit() {

}

appCardClicked(routePath: string) {
this.spinnerSubject.next(true);
this.router.navigate([routePath], {
replaceUrl: true
});
// this.spinnerSubject.next(false);
}
}








<div class="spinner-container">
<mat-spinner [color]="spinnerColor" *ngIf="loading$ | async"></mat-spinner>
</div>

<mat-card class="app-card" (click)="appCardClicked('/lccp')">
<mat-card-content>
<p>
A summary goes here.
</p>
</mat-card-content>
<mat-card-actions>
<button mat-button>LIKE</button>
<button mat-button>SHARE</button>
</mat-card-actions>
</mat-card>








@Component({
// tslint:disable-next-line:component-selector
selector: 'vertical-nav',
templateUrl: './nav.component.html',
styleUrls: ['./nav.component.css']
})
export class NavComponent implements OnInit, AfterViewInit, AfterContentInit {
private spinnerSubject = new BehaviorSubject<boolean>(false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();

routerLinkClicked(): void {
this.spinnerSubject.next(true);
}

ngAfterContentInit(): void {
this.spinnerSubject.next(false);
}
}








<mat-sidenav-container class="sidenav-container">
<mat-sidenav #drawer class="sidenav" fixedInViewport="true" [attr.role]="(isHandset$ | async) ? 'dialog' : 'navigation'" [mode]="(isHandset$ | async) ? 'over' : 'side'" [opened]="menuIsOpened || (isHandset$ | async)">
<mat-toolbar class="darkNavy">
<img src="assets/logo.gif" routerLink="/home" style="padding-top:40px" alt="logo" />
</mat-toolbar>
<mat-nav-list style="padding-top:50px">
<a *ngFor="let item of verticleMenu" mat-list-item routerLink="{{item.RouteLink}}" (click)="routerLinkClicked()">
{{item.Title}}
</a>
</mat-nav-list>
</mat-sidenav>
<mat-sidenav-content>
<mat-toolbar class="darkNavy">
<mat-nav-list>
<div class='menu' style="display:flex; align-items: flex-end">
<i class="material-icons" aria-label="Side nav toggle icon" (click)="toggleMenu()" matTooltip="menu">menu

<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</i>
<span *ngFor="let item of horizontalMenu" mat-list-item routerLink="{{item.RouteLink}}">&nbsp;
{{item.Title}}
</span>
</div>
</mat-nav-list>
</mat-toolbar>

<ng-content>
<!-- routed content is projected here -->
</ng-content>
<div class="spinner-container" *ngIf="loading$ | async" role="presentation">
<mat-spinner [color]="spinnerColor"></mat-spinner>
</div>
</mat-sidenav-content>
</mat-sidenav-container>












share|improve this question

























  • This should work. Sample Stackblitz

    – Jeto
    Nov 13 '18 at 18:44











  • Thanks. It's identical to what I have. It doesn't work on my app.

    – user266909
    Nov 13 '18 at 20:24














0












0








0








I would like to show a processing spinner in my Angular 6 app sidenav and home component as soon as a menu item, a route link or a hyperlink is clicked. Here are the HomeComponent and SideNav. I also have a spinner in the datasource component and it is working when the app makes connection to the webapi service. I copied the code to the SideNav and Home, but it is not displayed. Thanks for your help.






@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
private spinnerSubject = new BehaviorSubject<boolean> (false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();
spinnerColor = 'warn';

constructor(
private router: Router,
private activatedRoute: ActivatedRoute) {

activatedRoute.url.subscribe((s: UrlSegment) => {

});
}

ngOnInit() {

}

appCardClicked(routePath: string) {
this.spinnerSubject.next(true);
this.router.navigate([routePath], {
replaceUrl: true
});
// this.spinnerSubject.next(false);
}
}








<div class="spinner-container">
<mat-spinner [color]="spinnerColor" *ngIf="loading$ | async"></mat-spinner>
</div>

<mat-card class="app-card" (click)="appCardClicked('/lccp')">
<mat-card-content>
<p>
A summary goes here.
</p>
</mat-card-content>
<mat-card-actions>
<button mat-button>LIKE</button>
<button mat-button>SHARE</button>
</mat-card-actions>
</mat-card>








@Component({
// tslint:disable-next-line:component-selector
selector: 'vertical-nav',
templateUrl: './nav.component.html',
styleUrls: ['./nav.component.css']
})
export class NavComponent implements OnInit, AfterViewInit, AfterContentInit {
private spinnerSubject = new BehaviorSubject<boolean>(false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();

routerLinkClicked(): void {
this.spinnerSubject.next(true);
}

ngAfterContentInit(): void {
this.spinnerSubject.next(false);
}
}








<mat-sidenav-container class="sidenav-container">
<mat-sidenav #drawer class="sidenav" fixedInViewport="true" [attr.role]="(isHandset$ | async) ? 'dialog' : 'navigation'" [mode]="(isHandset$ | async) ? 'over' : 'side'" [opened]="menuIsOpened || (isHandset$ | async)">
<mat-toolbar class="darkNavy">
<img src="assets/logo.gif" routerLink="/home" style="padding-top:40px" alt="logo" />
</mat-toolbar>
<mat-nav-list style="padding-top:50px">
<a *ngFor="let item of verticleMenu" mat-list-item routerLink="{{item.RouteLink}}" (click)="routerLinkClicked()">
{{item.Title}}
</a>
</mat-nav-list>
</mat-sidenav>
<mat-sidenav-content>
<mat-toolbar class="darkNavy">
<mat-nav-list>
<div class='menu' style="display:flex; align-items: flex-end">
<i class="material-icons" aria-label="Side nav toggle icon" (click)="toggleMenu()" matTooltip="menu">menu

<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</i>
<span *ngFor="let item of horizontalMenu" mat-list-item routerLink="{{item.RouteLink}}">&nbsp;
{{item.Title}}
</span>
</div>
</mat-nav-list>
</mat-toolbar>

<ng-content>
<!-- routed content is projected here -->
</ng-content>
<div class="spinner-container" *ngIf="loading$ | async" role="presentation">
<mat-spinner [color]="spinnerColor"></mat-spinner>
</div>
</mat-sidenav-content>
</mat-sidenav-container>












share|improve this question
















I would like to show a processing spinner in my Angular 6 app sidenav and home component as soon as a menu item, a route link or a hyperlink is clicked. Here are the HomeComponent and SideNav. I also have a spinner in the datasource component and it is working when the app makes connection to the webapi service. I copied the code to the SideNav and Home, but it is not displayed. Thanks for your help.






@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
private spinnerSubject = new BehaviorSubject<boolean> (false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();
spinnerColor = 'warn';

constructor(
private router: Router,
private activatedRoute: ActivatedRoute) {

activatedRoute.url.subscribe((s: UrlSegment) => {

});
}

ngOnInit() {

}

appCardClicked(routePath: string) {
this.spinnerSubject.next(true);
this.router.navigate([routePath], {
replaceUrl: true
});
// this.spinnerSubject.next(false);
}
}








<div class="spinner-container">
<mat-spinner [color]="spinnerColor" *ngIf="loading$ | async"></mat-spinner>
</div>

<mat-card class="app-card" (click)="appCardClicked('/lccp')">
<mat-card-content>
<p>
A summary goes here.
</p>
</mat-card-content>
<mat-card-actions>
<button mat-button>LIKE</button>
<button mat-button>SHARE</button>
</mat-card-actions>
</mat-card>








@Component({
// tslint:disable-next-line:component-selector
selector: 'vertical-nav',
templateUrl: './nav.component.html',
styleUrls: ['./nav.component.css']
})
export class NavComponent implements OnInit, AfterViewInit, AfterContentInit {
private spinnerSubject = new BehaviorSubject<boolean>(false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();

routerLinkClicked(): void {
this.spinnerSubject.next(true);
}

ngAfterContentInit(): void {
this.spinnerSubject.next(false);
}
}








<mat-sidenav-container class="sidenav-container">
<mat-sidenav #drawer class="sidenav" fixedInViewport="true" [attr.role]="(isHandset$ | async) ? 'dialog' : 'navigation'" [mode]="(isHandset$ | async) ? 'over' : 'side'" [opened]="menuIsOpened || (isHandset$ | async)">
<mat-toolbar class="darkNavy">
<img src="assets/logo.gif" routerLink="/home" style="padding-top:40px" alt="logo" />
</mat-toolbar>
<mat-nav-list style="padding-top:50px">
<a *ngFor="let item of verticleMenu" mat-list-item routerLink="{{item.RouteLink}}" (click)="routerLinkClicked()">
{{item.Title}}
</a>
</mat-nav-list>
</mat-sidenav>
<mat-sidenav-content>
<mat-toolbar class="darkNavy">
<mat-nav-list>
<div class='menu' style="display:flex; align-items: flex-end">
<i class="material-icons" aria-label="Side nav toggle icon" (click)="toggleMenu()" matTooltip="menu">menu

<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</i>
<span *ngFor="let item of horizontalMenu" mat-list-item routerLink="{{item.RouteLink}}">&nbsp;
{{item.Title}}
</span>
</div>
</mat-nav-list>
</mat-toolbar>

<ng-content>
<!-- routed content is projected here -->
</ng-content>
<div class="spinner-container" *ngIf="loading$ | async" role="presentation">
<mat-spinner [color]="spinnerColor"></mat-spinner>
</div>
</mat-sidenav-content>
</mat-sidenav-container>








@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
private spinnerSubject = new BehaviorSubject<boolean> (false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();
spinnerColor = 'warn';

constructor(
private router: Router,
private activatedRoute: ActivatedRoute) {

activatedRoute.url.subscribe((s: UrlSegment) => {

});
}

ngOnInit() {

}

appCardClicked(routePath: string) {
this.spinnerSubject.next(true);
this.router.navigate([routePath], {
replaceUrl: true
});
// this.spinnerSubject.next(false);
}
}





@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
private spinnerSubject = new BehaviorSubject<boolean> (false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();
spinnerColor = 'warn';

constructor(
private router: Router,
private activatedRoute: ActivatedRoute) {

activatedRoute.url.subscribe((s: UrlSegment) => {

});
}

ngOnInit() {

}

appCardClicked(routePath: string) {
this.spinnerSubject.next(true);
this.router.navigate([routePath], {
replaceUrl: true
});
// this.spinnerSubject.next(false);
}
}





<div class="spinner-container">
<mat-spinner [color]="spinnerColor" *ngIf="loading$ | async"></mat-spinner>
</div>

<mat-card class="app-card" (click)="appCardClicked('/lccp')">
<mat-card-content>
<p>
A summary goes here.
</p>
</mat-card-content>
<mat-card-actions>
<button mat-button>LIKE</button>
<button mat-button>SHARE</button>
</mat-card-actions>
</mat-card>





<div class="spinner-container">
<mat-spinner [color]="spinnerColor" *ngIf="loading$ | async"></mat-spinner>
</div>

<mat-card class="app-card" (click)="appCardClicked('/lccp')">
<mat-card-content>
<p>
A summary goes here.
</p>
</mat-card-content>
<mat-card-actions>
<button mat-button>LIKE</button>
<button mat-button>SHARE</button>
</mat-card-actions>
</mat-card>





@Component({
// tslint:disable-next-line:component-selector
selector: 'vertical-nav',
templateUrl: './nav.component.html',
styleUrls: ['./nav.component.css']
})
export class NavComponent implements OnInit, AfterViewInit, AfterContentInit {
private spinnerSubject = new BehaviorSubject<boolean>(false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();

routerLinkClicked(): void {
this.spinnerSubject.next(true);
}

ngAfterContentInit(): void {
this.spinnerSubject.next(false);
}
}





@Component({
// tslint:disable-next-line:component-selector
selector: 'vertical-nav',
templateUrl: './nav.component.html',
styleUrls: ['./nav.component.css']
})
export class NavComponent implements OnInit, AfterViewInit, AfterContentInit {
private spinnerSubject = new BehaviorSubject<boolean>(false);
loading$: Observable<boolean> = this.spinnerSubject.asObservable();

routerLinkClicked(): void {
this.spinnerSubject.next(true);
}

ngAfterContentInit(): void {
this.spinnerSubject.next(false);
}
}





<mat-sidenav-container class="sidenav-container">
<mat-sidenav #drawer class="sidenav" fixedInViewport="true" [attr.role]="(isHandset$ | async) ? 'dialog' : 'navigation'" [mode]="(isHandset$ | async) ? 'over' : 'side'" [opened]="menuIsOpened || (isHandset$ | async)">
<mat-toolbar class="darkNavy">
<img src="assets/logo.gif" routerLink="/home" style="padding-top:40px" alt="logo" />
</mat-toolbar>
<mat-nav-list style="padding-top:50px">
<a *ngFor="let item of verticleMenu" mat-list-item routerLink="{{item.RouteLink}}" (click)="routerLinkClicked()">
{{item.Title}}
</a>
</mat-nav-list>
</mat-sidenav>
<mat-sidenav-content>
<mat-toolbar class="darkNavy">
<mat-nav-list>
<div class='menu' style="display:flex; align-items: flex-end">
<i class="material-icons" aria-label="Side nav toggle icon" (click)="toggleMenu()" matTooltip="menu">menu

<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</i>
<span *ngFor="let item of horizontalMenu" mat-list-item routerLink="{{item.RouteLink}}">&nbsp;
{{item.Title}}
</span>
</div>
</mat-nav-list>
</mat-toolbar>

<ng-content>
<!-- routed content is projected here -->
</ng-content>
<div class="spinner-container" *ngIf="loading$ | async" role="presentation">
<mat-spinner [color]="spinnerColor"></mat-spinner>
</div>
</mat-sidenav-content>
</mat-sidenav-container>





<mat-sidenav-container class="sidenav-container">
<mat-sidenav #drawer class="sidenav" fixedInViewport="true" [attr.role]="(isHandset$ | async) ? 'dialog' : 'navigation'" [mode]="(isHandset$ | async) ? 'over' : 'side'" [opened]="menuIsOpened || (isHandset$ | async)">
<mat-toolbar class="darkNavy">
<img src="assets/logo.gif" routerLink="/home" style="padding-top:40px" alt="logo" />
</mat-toolbar>
<mat-nav-list style="padding-top:50px">
<a *ngFor="let item of verticleMenu" mat-list-item routerLink="{{item.RouteLink}}" (click)="routerLinkClicked()">
{{item.Title}}
</a>
</mat-nav-list>
</mat-sidenav>
<mat-sidenav-content>
<mat-toolbar class="darkNavy">
<mat-nav-list>
<div class='menu' style="display:flex; align-items: flex-end">
<i class="material-icons" aria-label="Side nav toggle icon" (click)="toggleMenu()" matTooltip="menu">menu

<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</i>
<span *ngFor="let item of horizontalMenu" mat-list-item routerLink="{{item.RouteLink}}">&nbsp;
{{item.Title}}
</span>
</div>
</mat-nav-list>
</mat-toolbar>

<ng-content>
<!-- routed content is projected here -->
</ng-content>
<div class="spinner-container" *ngIf="loading$ | async" role="presentation">
<mat-spinner [color]="spinnerColor"></mat-spinner>
</div>
</mat-sidenav-content>
</mat-sidenav-container>






angular






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share|improve this question













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share|improve this question








edited Nov 13 '18 at 21:54







user266909

















asked Nov 13 '18 at 18:12









user266909user266909

81031635




81031635













  • This should work. Sample Stackblitz

    – Jeto
    Nov 13 '18 at 18:44











  • Thanks. It's identical to what I have. It doesn't work on my app.

    – user266909
    Nov 13 '18 at 20:24



















  • This should work. Sample Stackblitz

    – Jeto
    Nov 13 '18 at 18:44











  • Thanks. It's identical to what I have. It doesn't work on my app.

    – user266909
    Nov 13 '18 at 20:24

















This should work. Sample Stackblitz

– Jeto
Nov 13 '18 at 18:44





This should work. Sample Stackblitz

– Jeto
Nov 13 '18 at 18:44













Thanks. It's identical to what I have. It doesn't work on my app.

– user266909
Nov 13 '18 at 20:24





Thanks. It's identical to what I have. It doesn't work on my app.

– user266909
Nov 13 '18 at 20:24












1 Answer
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oldest

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I added a DIV after the ng-content in the nav.component.htm. The spinner in the Nav component is showing up. I also did router.events.subscribe() and exam the event type to toggled on and off the spinner. However, the spinner in the Home component never show up.






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    I added a DIV after the ng-content in the nav.component.htm. The spinner in the Nav component is showing up. I also did router.events.subscribe() and exam the event type to toggled on and off the spinner. However, the spinner in the Home component never show up.






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      I added a DIV after the ng-content in the nav.component.htm. The spinner in the Nav component is showing up. I also did router.events.subscribe() and exam the event type to toggled on and off the spinner. However, the spinner in the Home component never show up.






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        I added a DIV after the ng-content in the nav.component.htm. The spinner in the Nav component is showing up. I also did router.events.subscribe() and exam the event type to toggled on and off the spinner. However, the spinner in the Home component never show up.






        share|improve this answer















        I added a DIV after the ng-content in the nav.component.htm. The spinner in the Nav component is showing up. I also did router.events.subscribe() and exam the event type to toggled on and off the spinner. However, the spinner in the Home component never show up.







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Nov 14 '18 at 1:21

























        answered Nov 13 '18 at 21:50









        user266909user266909

        81031635




        81031635






























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