Use Tippy.js in Angular

Question

I have a directive with the following code

import { Directive, Input, OnInit, ElementRef, SimpleChanges, OnChanges } from '@angular/core';
import tippy from 'tippy.js';

@Directive({
  selector: '[tippy]'
})
export class TippyDirective implements OnInit, OnChanges {

  @Input('tippyOptions') public tippyOptions: Object;

  private el: any;
  private tippy: any = null;
  private popper: any = null;

  constructor(el: ElementRef) {
    this.el = el;
  }

  public ngOnInit() {
    this.loadTippy();
  }

  public ngOnChanges(changes: SimpleChanges) {
    if (changes.tippyOptions) {
      this.tippyOptions = changes.tippyOptions.currentValue;
      this.loadTippy();
    }
  }

  public tippyClose() {
    this.loadTippy();
  }

  private loadTippy() {
    setTimeout(() => {
      let el = this.el.nativeElement;
      let tippyOptions = this.tippyOptions || {};

      if (this.tippy) {
        this.tippy.destroyAll(this.popper);
      }

      this.tippy = tippy(el, tippyOptions, true);
      this.popper = this.tippy.getPopperElement(el);
    });
  }
}

And using the directive as follows

<input tippy [tippyOptions]="{
              arrow: true,
              createPopperInstanceOnInit: true
            }" class="search-input" type="text" 
(keyup)="searchInputKeyDown($event)">

How can I have the Tippy shown on mouseenter or focus as these are the default triggers, from the tippy instance I have in the directive, this is what I get when I put console.log(this.tippy) on line 44

{
  destroyAll:ƒ destroyAll()
  options:{placement: "top", livePlacement: true, trigger: "mouseenter focus", animation: "shift-away", html: false, …}
  selector:input.search-input
  tooltips:[]
}

As I am getting an error when I try to use

this.popper = this.tippy.getPopperElement(el);

ERROR TypeError: _this.tippy.getPopperElement is not a function

How can I get this directive to work as I took it from a repo in github

https://github.com/tdanielcox/ngx-tippy/blob/master/lib/tippy.directive.ts

What is it that I am missing here, any help is appreciated, thanks

Answer 1

I'm not sure what they were trying to accomplish in the linked repo you have included. To get tippy.js to work though, you should be able to change the directive to the following:

import { Directive, Input, OnInit, ElementRef } from '@angular/core';
import tippy from 'tippy.js';

@Directive({
  /* tslint:disable-next-line */
  selector: '[tippy]'
})
export class TippyDirective implements OnInit {

  @Input('tippyOptions') public tippyOptions: Object;

  constructor(private el: ElementRef) {
    this.el = el;
  }

  public ngOnInit() {
    tippy(this.el.nativeElement, this.tippyOptions || {}, true);
  }
}

Working example repo

Answer 2

This works with tippy.js 6.x

@Directive({selector: '[tooltip],[tooltipOptions]'})
export class TooltipDirective implements OnDestroy, AfterViewInit, OnChanges {
  constructor(private readonly el: ElementRef) {}

  private instance: Instance<Props> = null;

  @Input() tooltip: string;
  @Input() tooltipOptions: Partial<Props>;

  ngAfterViewInit() {
    this.instance = tippy(this.el.nativeElement as Element, {});
    this.updateProps({
      ...(this.tooltipOptions ?? {}),
      content: this.tooltip,
    });
  }

  ngOnDestroy() {
    this.instance?.destroy();
    this.instance = null;
  }

  ngOnChanges(changes: SimpleChanges) {
    let props = {
      ...(this.tooltipOptions ?? {}),
      content: this.tooltip,
    };

    if (changes.tooltipOptions) {
      props = {...(changes.tooltipOptions.currentValue ?? {}), content: this.tooltip};
    }
    if (changes.tooltip) {
      props.content = changes.tooltip.currentValue;
    }

    this.updateProps(props);
  }

  private updateProps(props: Partial<Props>) {
    if (this.instance && !jsonEqual<any>(props, this.instance.props)) {
      this.instance.setProps(this.normalizeOptions(props));
      if (!props.content) {
        this.instance.disable();
      } else {
        this.instance.enable();
      }
    }
  }

  private normalizeOptions = (props: Partial<Props>): Partial<Props> => ({
    ...(props || {}),
    duration: props?.duration ?? [50, 50],
  });
}

Using this looks like:

<button [tooltip]="'Hello!'">Hover here</button>
<button [tooltip]="'Hi!'" [tooltipOptions]="{placement: 'left'}">Hover here</button>

Answer 3

You can also use the lifecyle hook ngAfterViewInit then you don't need the setTimeout.

public ngAfterViewInit() {
    this.loadTippy();
}