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user/plugins/admin/themes/grav/app/utils/bootstrap-transition.js

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+import jQuery from 'jquery';
+
++(function($) {
+    'use strict';
+
+    // CSS TRANSITION SUPPORT (Shoutout: http://www.modernizr.com/)
+    // ============================================================
+
+    function transitionEnd() {
+        var el = document.createElement('bootstrap');
+
+        var transEndEventNames = {
+            WebkitTransition: 'webkitTransitionEnd',
+            MozTransition: 'transitionend',
+            OTransition: 'oTransitionEnd otransitionend',
+            transition: 'transitionend'
+        };
+
+        for (var name in transEndEventNames) {
+            if (el.style[name] !== undefined) {
+                return { end: transEndEventNames[name] };
+            }
+        }
+
+        return false; // explicit for ie8 (  ._.)
+    }
+
+    // http://blog.alexmaccaw.com/css-transitions
+    $.fn.emulateTransitionEnd = function(duration) {
+        var called = false;
+        var $el = this;
+        $(this).one('bsTransitionEnd', function() { called = true; });
+        var callback = function() { if (!called) $($el).trigger($.support.transition.end); };
+        setTimeout(callback, duration);
+        return this;
+    };
+
+    $(function() {
+        $.support.transition = transitionEnd();
+
+        if (!$.support.transition) return;
+
+        $.event.special.bsTransitionEnd = {
+            bindType: $.support.transition.end,
+            delegateType: $.support.transition.end,
+            handle: function(e) {
+                if ($(e.target).is(this)) return e.handleObj.handler.apply(this, arguments);
+            }
+        };
+    });
+
+}(jQuery));