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    <p>As you can see from the <a href="https://github.com/henrikerola/scaladin/blob/2.2/addon/src/main/scala/vaadin/scala/CustomComponent.scala" rel="nofollow">CustomComponent</a> source </p> <pre><code>class CustomComponent(override val p: com.vaadin.ui.CustomComponent with CustomComponentMixin = new com.vaadin.ui.CustomComponent with CustomComponentMixin ) extends AbstractComponent(p) { ... inner code } </code></pre> <p>You pass the corresponding vaadin component as a contructor argument <code>p</code> (which usually stands for "peer")</p> <p>That is, the scaladin component is a wrapper around your original component.</p> <p>To override the behavior of the peer component, you have to do it when you pass it to the wrapper constructor.</p> <p>You have different choices here</p> <hr> <p><strong>With anonymous subclass</strong></p> <pre><code>class CostPlanImport(override val p: com.vaadin.ui.CustomComponent with CustomComponentMixin = new com.vaadin.ui.CustomComponent { def attach() { //your code here } with CustomComponentMixin ) extends CustomComponent(p) </code></pre> <hr> <p><strong>With a trait</strong></p> <pre><code>trait AttachBehavior { self: com.vaadin.ui.Component =&gt; def attach() { //your reusable code here } } class CostPlanImport(override val p: com.vaadin.ui.CustomComponent with CustomComponentMixin = new com.vaadin.ui.CustomComponent with CustomComponentMixin with AttachBehavior ) extends CustomComponent(p) </code></pre> <hr> <p><strong>With a <code>CustomComponent</code> subclass</strong></p> <p>[not shown, but is a mix of the preceding two examples]</p> <hr> <p><em>Note: the code examples are not tested</em></p> <hr> <p><strong>UPDATE</strong></p> <p>If you need to pass parameters from your "wrapper component" constructor to the peer's method, you can</p> <pre><code>class CostPlanImport( name: String, cost: Double, ) extends CustomComponent( p = new com.vaadin.ui.CustomComponent { def attach() { //your code here //with "name" &amp; "cost" visible } with CustomComponentMixin ) </code></pre>
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    1. COit's helpful. Thank you. But i still have a problem: In my class `CostPlanImport`, i define some variables. How can i access these variables in override method of peer component?
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    2. COSee the update, if that's what you need
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