ng-include in ui-bootstrap tooltip

ng-include in ui-bootstrap tooltip

I am testing angularJS and ui-bootstrap tooltips :
http://angular-ui.github.io/bootstrap/#/tooltip
What I want to achieve is a tooltip with some working buttons inside.
I have tried :
<input type="text" value="{{activity.name}}"
tooltip-html-unsafe='<button class="btn btn-primary btn-mini"
ng-click="addChild(activity)">+</button>
<button class="btn btn-danger btn-mini"
ng-click="remove(activity)">X</button>
<button class="btn btn-danger btn-mini"
ng-click="removeChildren(activity)" ng-show="activity.children.length >
0">X children</button>'
tooltip-trigger="focus"
tooltip-placement="right" />
Which is ugly and does not work. The buttons are rendered but do not
execute the 'ng-click'.
Is there some way I can tell the tooltip to fetch a partial and keep the
ng-click functional ?