demo/src/app/components/+popover/demos/trigger-by-isopen-property/trigger-by-isopen-property.html
<p>
<span popover="Hello there! I was triggered by changing isOpen property"
triggers="" [isOpen]="isOpen">
This text has attached popover
</span>
</p>
<button type="button" class="btn btn-primary"
(click)="isOpen = !isOpen">
Toggle
</button>