javafx: accept overridden setters (IDEA-112151)

plugins/javaFX/javaFX-CE/testSrc/org/jetbrains/plugins/javaFX/fxml/JavaFXHighlightingTest.java

@@ -245,6 +245,10 @@ public class JavaFXHighlightingTest extends AbstractJavaFXTestCase {
     doTest();
   }
 
+  public void testReadOnly1() throws Exception {
+    doTest();
+  }
+
   public void testScriptSource() throws Exception {
     doTest("s1.js");
   }

plugins/javaFX/src/org/jetbrains/plugins/javaFX/fxml/JavaFxPsiUtil.java

@@ -187,7 +187,7 @@ public class JavaFxPsiUtil {
   public static PsiMethod findPropertySetter(String attributeName, PsiClass classWithStaticProperty) {
     final String setterName = PropertyUtil.suggestSetterName(StringUtil.getShortName(attributeName));
     final PsiMethod[] setters = classWithStaticProperty.findMethodsByName(setterName, true);
-    if (setters.length == 1) {
+    if (setters.length >= 1) {
       return setters[0];
     }
     return null;

plugins/javaFX/testData/highlighting/readOnly1.fxml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.control.RadioButton?>
+<?import javafx.scene.control.ToggleGroup?>
+<?import javafx.scene.layout.StackPane?>
+<StackPane xmlns:fx="http://javafx.com/fxml">
+    <RadioButton fx:id="option1" disable="true" mnemonicParsing="false" text="Option 1">
+        <toggleGroup>
+            <ToggleGroup fx:id="toggleGroup1"/>
+        </toggleGroup>
+    </RadioButton>
+    <RadioButton fx:id="option2" disable="true" mnemonicParsing="false" text="Option 2" toggleGroup="$toggleGroup1"/>
+</StackPane>