Fix Bug #156. FxmlViews located in the default package can now be loaded...

mvvmfx/src/main/java/de/saxsys/mvvmfx/internal/viewloader/FxmlViewLoader.java

@@ -61,11 +61,38 @@ public class FxmlViewLoader {
 	public <ViewType extends View<? extends ViewModelType>, ViewModelType extends ViewModel> ViewTuple<ViewType, ViewModelType> loadFxmlViewTuple(
 			Class<? extends ViewType> viewType, ResourceBundle resourceBundle, Object controller, Object root,
 			ViewModelType viewModel) {
-		final String pathToFXML = "/" + viewType.getPackage().getName().replaceAll("\\.", "/") + "/"
-				+ viewType.getSimpleName() + ".fxml";
-
+		final String pathToFXML = createFxmlPath(viewType);
 		return loadFxmlViewTuple(pathToFXML, resourceBundle, controller, root, viewModel);
 	}
+
+	/**
+	 * This method is used to create a String with the path to the FXML file for a given View class.
+	 * 
+	 * This is done by taking the package of the view class (if any) and replace "." with "/". 
+	 * After that the Name of the class and the file ending ".fxml" is appended.
+	 * 
+	 * Example: de.saxsys.myapp.ui.MainView as view class will be transformed to "/de/saxsys/myapp/ui/MainView.fxml"
+	 * 
+	 * Example 2: MainView (located in the default package) will be transformed to "/MainView.fxml"
+	 * 
+	 * @param viewType the view class type.
+	 * @return the path to the fxml file as string.
+	 */
+	private String createFxmlPath(Class<?> viewType){
+		final StringBuilder pathBuilder = new StringBuilder();
+
+		pathBuilder.append("/");
+
+		if(viewType.getPackage() != null){
+			pathBuilder.append(viewType.getPackage().getName().replaceAll("\\.","/"));
+			pathBuilder.append("/");
+		}
+
+		pathBuilder.append(viewType.getSimpleName());
+		pathBuilder.append(".fxml");
+
+		return pathBuilder.toString();
+	}
 
 	/**
 	 * Load the viewTuple by the path of the fxml file.

mvvmfx/src/test/java/FxmlViewInDefaultPackage.java

@@ -0,0 +1,11 @@
+import de.saxsys.mvvmfx.FxmlView;
+import de.saxsys.mvvmfx.internal.viewloader.example.TestViewModel;
+
+/**
+ * The purpose of this class is to reproduce Bug no. 154 (https://github.com/sialcasa/mvvmFX/issues/156).
+ * 
+ * The problem is that FxmlView's that are located in the default package can't be loaded properly. Instead a 
+ * NullPointerException was thrown. 
+ */
+public class FxmlViewInDefaultPackage implements FxmlView<TestViewModel> {
+}

mvvmfx/src/test/java/FxmlViewinDefaultPackageTest.java

@@ -0,0 +1,29 @@
+import de.saxsys.javafx.test.JfxRunner;
+import de.saxsys.mvvmfx.FluentViewLoader;
+import de.saxsys.mvvmfx.ViewTuple;
+import de.saxsys.mvvmfx.internal.viewloader.example.TestViewModel;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * This test reproduces the bug no 154 (https://github.com/sialcasa/mvvmFX/issues/156).
+ * 
+ * A FxmlView located in the default package couldn't be loaded because a NullPointerException was thrown.
+ */
+@RunWith(JfxRunner.class)
+public class FxmlViewinDefaultPackageTest {
+
+
+	@Test
+	public void test(){
+
+		ViewTuple<FxmlViewInDefaultPackage, TestViewModel> viewTuple = FluentViewLoader
+				.fxmlView(FxmlViewInDefaultPackage.class).load();
+
+		assertThat(viewTuple).isNotNull();
+		assertThat(viewTuple.getView()).isNotNull();
+	}
+
+}

mvvmfx/src/test/resources/FxmlViewInDefaultPackage.fxml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.VBox?>
+<VBox xmlns:fx="http://javafx.com/fxml" fx:controller="FxmlViewInDefaultPackage">
+
+</VBox>