How to add line breaks within tooltip in angular m

Question

How to add line break in tooltip I have implemented the Tooltip but i am not able to add multi line or line breaks in tooltip.Below is my code

http://codepen.io/apps4any/pen/RWQLyr

Html

<div ng-controller="AppCtrl" ng-cloak="" class="tooltipdemoBasicUsage" ng-app="MyApp">
  <md-content layout-padding="">
    <md-button class="md-fab md-fab-top-right right" aria-label="Photos">
      <md-icon md-svg-src="img/icons/ic_photo_24px.svg" style="width: 24px; height: 24px;"></md-icon>
      <md-tooltip>
        List1<br>
        List2<br>
        List3<br>
        List4
      </md-tooltip>
    </md-button>
    <div style="margin-top: 150px;">
    </div>
  </md-content>
</div>

CSS:

.tooltipdemoBasicUsage md-toolbar .md-toolbar-tools .md-button, .tooltipdemoBasicUsage md-toolbar .md-toolbar-tools .md-button:hover {
  box-shadow: none;
  border: none;
  transform: none;
  -webkit-transform: none; }
.tooltipdemoBasicUsage .left {
  top: 70px !important;
  left: 56px !important; }
.tooltipdemoBasicUsage .right {
  top: 70px !important;
  right: 56px !important; }

JS

angular.module('MyApp')
.controller('AppCtrl', function($scope) {
  $scope.demo = {};
});

Answer 1

Since angular-material version >1.1.2 you can simply override .md-tooltip class:
(JsFiddle)

.md-tooltip {
    height: auto;
}

---

And if you want to style a particular tooltip, add a custom class to md-tooltip element:
(jsFiddle)

HTML

<md-tooltip class="tooltip-multiline">
    I'm a multiline <br/> tooltip
</md-tooltip>

CSS

.tooltip-multiline {
  height: auto;
}

both cases tested in angular-material 1.1.2, 1.1.3 and 1.1.4 versions