preventing ng-click event with angular-material - angularjs

Question

I have a series of toggles inside a custom angular dropdown(s). The problem I am having is, the toggles do toggle, but they close the dropdown as well. How can I prevent this? The dropdowns should still close when double clicking the drawer, that is the expected behavior, but not when the toggle is clicked.
This is the HTML:
<div class="cnt" ng-repeat="item in data">
<div class="menu-item" ng-click="toggle(item.pos);">
<md-list layout="row" layout-padding="" class="layout-row" layout-align="start center" flex>
<span class="title flex" flex=""> {{item.name}}</span>
<i class="fa fa-chevron-down" ng-class="{'rotate180': item.pos==menuIsOpen, 'rotate-back': !menuIsOpen}"></i>
</md-list>
<div class="sub-menu" ng-animate="'animate'" >
<div ng-repeat='(k,v) in item track by $index'>
<div ng-if="isArray(v)">
<md-menu-item ng-if="menuIsOpen===item.pos" ng-repeat='v1 in v track by $index'>
<md-button>
<div layout="row" flex="">
<md-switch class="md-primary" name="special" ng-model="project.special" required>
<span class="">
<p flex="">{{v1.title}}</p>
</span>
</md-switch>
</div>
</md-button>
</md-menu-item>
</div>
</div>
</div>
</div>
</div>
and the controller has this in it for functionality purposes and data population from json :
$scope.toggle = function(itemPos) {
if ($scope.menuIsOpen === itemPos) {
$scope.menuIsOpen = 0;
}
else {
$scope.menuIsOpen = itemPos;
}
}
$scope.isArray = function(val) {
return Array.isArray(val);
}
spoiler alert:adding md-prevent-menu-close="true" to the md-button didn't help
Here is a CODEPEN to try things out
Thanks guys

Answer 1

You should move your ng-click="toggle(item.pos);" into the <md-list>
<div class="cnt" ng-repeat="item in data">
<div class="menu-item">
<md-list layout="row" layout-padding="" class="layout-row" layout-align="start center" flex ng-click="toggle(item.pos);">
<span class="title flex" flex=""> {{item.name}}</span>
<i class="fa fa-chevron-down" ng-class="{'rotate180': item.pos==menuIsOpen, 'rotate-back': !menuIsOpen}"></i>
</md-list>
<div class="sub-menu" ng-animate="'animate'" >
<div ng-repeat='(k,v) in item track by $index'>
<div ng-if="isArray(v)">
<md-menu-item ng-if="menuIsOpen===item.pos" ng-repeat='v1 in v track by $index'>
<md-button>
<div layout="row" flex="">
<md-switch class="md-primary" name="special" ng-model="project.special" required>
<span class="">
<p flex="">{{v1.title}}</p>
</span>
</md-switch>
</div>
</md-button>
</md-menu-item>
</div>
</div>
</div>
</div>
</div>