title: Declaring Variable In JavaFX CSS File
body: <p>I've been inspecting the "caspian.css" distributed by Oracle in the JavaFX runtime library, and I see they have declared some color values as variables. Eg:</p>
  
  <pre><code>-fx-base: #d0d0d0; // Caspian.css, Line 47
  </code></pre>
  
  <p>...and then they used it as value of some other property, like:</p>
  
  <pre><code>-fx-color: -fx-base; // Caspian.css, Line 96
  </code></pre>
  
  <p><strong>Now</strong>, what I want to do is to declare a measurement unit (<code>-fx-radius-default: 10px</code>) and then use it everytime I need to set radius of a control, for instance:</p>
  
  <pre><code>-fx-border-radius: -fx-radius-default;
  -fx-background-radius: -fx-radius-default;
  </code></pre>
  
  <p>I have been unsuccessful so far. My question is: Is this possible, at all?</p>
  
  <hr>
  
  <p><em>Edit: Adding experiment details</em></p>
  
  <h1>Details</h1>
  
  <p>Here is my Experiment.fxml file that I created on JavaFX Scene Builder 1.1:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  
  &lt;?import java.lang.*?&gt;
  &lt;?import java.net.*?&gt;
  &lt;?import java.util.*?&gt;
  &lt;?import javafx.scene.control.*?&gt;
  &lt;?import javafx.scene.layout.*?&gt;
  &lt;?import javafx.scene.paint.*?&gt;
  
  &lt;AnchorPane id="AnchorPane" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml"&gt;
    &lt;children&gt;
      &lt;TextArea layoutX="200.0" layoutY="119.0" prefWidth="200.0" styleClass="track" wrapText="true" /&gt;
    &lt;/children&gt;
    &lt;stylesheets&gt;
      &lt;URL value="@css/Experiment.css" /&gt;
    &lt;/stylesheets&gt;
  &lt;/AnchorPane&gt;
  </code></pre>
  
  <p>And below is the <code>css/Experiment.css</code> that I have used:</p>
  
  <pre><code>* {
      -fx-radius-default: 10px;
  }
  .track {
      -fx-border-radius: -fx-radius-default;
      -fx-border-color: black;
  }
  </code></pre>
  
  <p>Unfortunately this doesn't work, giving an error message like this:</p>
  
  <blockquote>
    <p>Could not resolve '-fx-radius-default' while resolving lookups for '-fx-border-radius' from rule '*.track' in stylesheet file: /home/abdullah/codebase/src/package/css/Experiment.css</p>
  </blockquote>
  
  <p>If I use plain syntax (<code>-fx-border-radius: 10px</code>), there is no problem with that.</p>
  
  <p>What am I doing wrong here?</p>
  
  <hr>
  
  <p><em>Edit: Conclusion</em></p>
  
  <h1>Conclusion: Not Possible</h1>
  
  <p>It seems what I am looking for is not possible with the current version of JavaFX, since "<a href="http://docs.oracle.com/javafx/2/api/javafx/scene/doc-files/cssref.html#typecolor">JavaFX CSS Reference Guide</a>" only mentions "looked-up colors", and not a generic concept of "variables". It would be a good feature, though... Just saying...</p>