Replace core.Utils.isDefined for $defined.
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@@ -156,7 +156,7 @@ mindplot.IconGroup = new Class({
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registerListeners : function() {
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this.options.nativeElem.addEventListener('click', function(event) {
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// Avoid node creation ...
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if (core.Utils.isDefined(event.stopPropagation)) {
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if ($defined(event.stopPropagation)) {
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event.stopPropagation(true);
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} else {
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event.cancelBubble = true;
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@@ -165,7 +165,7 @@ mindplot.IconGroup = new Class({
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});
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this.options.nativeElem.addEventListener('dblclick', function(event) {
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// Avoid node creation ...
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if (core.Utils.isDefined(event.stopPropagation)) {
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if ($defined(event.stopPropagation)) {
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event.stopPropagation(true);
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} else {
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event.cancelBubble = true;
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