feat(popover): don't show popover if content is undefined

[serddmitry]

UPDATE: it should be like with tooltips, if a content is not defined, it should be displayed

In our app we show popovers if the popover content is present, which is not always the case.
Would be cool to be able to disable popover through a property. As a workaround, I'm using 2 *ngIf - one with popover and one without.

[valorkin]

you can control it via [isOpen] popover property

[ersimont]

Either I don't understand the request or the response. Let me explain my situation, which I thought matches what @serddmitry was requesting:

I have a number of components displayed using *ngFor. Some of them should have popovers, some should not, depending on their value (let's call that value item.popoverText). Currently if popoverText is undefined, the element has a tiny blank popover. Is there a way to disable that, so there is no popover at all in such a case?

[valorkin]

aha, ok
@ersimont
it should be like with tooltips, if a content is not defined, it should be displayed

[RohanGovande]

We are currently using popover version 1.6.3 and can't update it fr some other dependencies, do we have any alternative for this that would work in older version.