I have a set of single cell components within an ng-for
loop.
I have everything in place but I cannot seem to figure out the proper
Currently I have
setTimeout(() => {
scrollToBottom();
});
But this doesn't work all the time as images asynchronously push the viewport down.
Whats the appropriate way to scroll to the bottom of a chat window in Angular 2?
I had the same problem, I'm using a AfterViewChecked
and @ViewChild
combination (Angular2 beta.3).
The Component:
import {..., AfterViewChecked, ElementRef, ViewChild, OnInit} from 'angular2/core'
@Component({
...
})
export class ChannelComponent implements OnInit, AfterViewChecked {
@ViewChild('scrollMe') private myScrollContainer: ElementRef;
ngOnInit() {
this.scrollToBottom();
}
ngAfterViewChecked() {
this.scrollToBottom();
}
scrollToBottom(): void {
try {
this.myScrollContainer.nativeElement.scrollTop = this.myScrollContainer.nativeElement.scrollHeight;
} catch(err) { }
}
}
The Template:
<div #scrollMe style="overflow: scroll; height: xyz;">
<div class="..."
*ngFor="..."
...>
</div>
</div>
Of course this is pretty basic. The AfterViewChecked
triggers every time the view was checked:
Implement this interface to get notified after every check of your component's view.
If you have an input-field for sending messages for instance this event is fired after each keyup (just to give an example). But if you save whether the user scrolled manually and then skip the scrollToBottom()
you should be fine.