javafx: include property class into completion

(cherry picked from commit 95d73a61aee18342e97aeeecb7d35108f966e0a1)

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

@@ -148,6 +148,10 @@ public class JavaFxCompletionTest extends LightFixtureCompletionTestCase {
     doTest("layoutY");
   }
 
+  public void testAllowPropertyTypeClass() throws Exception {
+    doTest("ColumnConstraints");
+  }
+
   public void testReadOnly() throws Exception {
     configureByFile(getTestName(true) + ".fxml");
     assertTrue(myItems.length > 0);

plugins/javaFX/src/org/jetbrains/plugins/javaFX/fxml/descriptors/JavaFxPropertyElementDescriptor.java

@@ -85,6 +85,7 @@ public class JavaFxPropertyElementDescriptor implements XmlElementDescriptor {
             return true;
           }
         });
+        descriptors.add(new JavaFxClassBackedElementDescriptor(aClass.getName(), aClass));
       }
     } else if (InheritanceUtil.isInheritor(psiType, JavaFxCommonClassNames.JAVAFX_BEANS_PROPERTY)) {
       final PsiType propertyType = JavaFxPsiUtil.getPropertyType(psiType, project);

plugins/javaFX/testData/completion/allowPropertyTypeClass.fxml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.*?>
+<GridPane xmlns:fx="http://javafx.com/fxml" >
+  <columnConstraints>
+    <<caret>
+  </columnConstraints>
+</GridPane>

plugins/javaFX/testData/completion/allowPropertyTypeClass_after.fxml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.*?>
+<GridPane xmlns:fx="http://javafx.com/fxml" >
+  <columnConstraints>
+    <ColumnConstraints
+  </columnConstraints>
+</GridPane>