Replace core.Utils.isDefined for $defined.
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@@ -73,7 +73,7 @@ mindplot.Workspace = new Class({
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},
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appendChild: function(shape) {
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if (core.Utils.isDefined(shape.addToWorkspace)) {
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if ($defined(shape.addToWorkspace)) {
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shape.addToWorkspace(this);
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} else {
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this._workspace.appendChild(shape);
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@@ -82,7 +82,7 @@ mindplot.Workspace = new Class({
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removeChild: function(shape) {
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// Element is a node, not a web2d element?
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if (core.Utils.isDefined(shape.removeFromWorkspace)) {
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if ($defined(shape.removeFromWorkspace)) {
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shape.removeFromWorkspace(this);
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} else {
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this._workspace.removeChild(shape);
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@@ -152,7 +152,7 @@ mindplot.Workspace = new Class({
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var mWorkspace = this;
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var mouseDownListener = function(event)
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{
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if (!core.Utils.isDefined(workspace.mouseMoveListener)) {
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if (!$defined(workspace.mouseMoveListener)) {
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if (mWorkspace.isWorkspaceEventsEnabled()) {
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mWorkspace.enableWorkspaceEvents(false);
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