Nested angular directives

by daslashi

HTML

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<button type="button" class="btn btn-info btn-xs" responsive-button button-size="small">Show Opening Hours</button>

JavaScript

var app = angular.module('myApp', []);

app.directive('responsiveButton', function ($window) {
    return function (scope, element, attrs) {

        var handleMediaMatch = function (mql) {
            var smallButtonWidth = 170;
            var standartButtonWidth = 250;

            if (mql.matches) {
                element.removeClass('btn-xs');
                element.addClass('btn-block');
                element.removeAttr('style');
            } else {
                element.removeClass('btn-block');

                if (attrs.buttonSize == 'small') {
                    element.addClass('btn-xs');
                    element.css('min-width', smallButtonWidth + 'px');
                } else {
                    element.css('min-width', standartButtonWidth + 'px');
                }
            }
        };

        var mobileMaxWidth = 640;

        var mql = $window.matchMedia('(max-width: ' + mobileMaxWidth + 'px)');
        mql.addListener(handleMediaMatch);
        handleMediaMatch(mql);
    }
});