TestObjectFactory.java

package de.danielluedecke.zettelkasten;

import java.io.File;
import java.lang.reflect.Field;

import org.jdesktop.application.SingleFrameApplication;

import de.danielluedecke.zettelkasten.database.AcceleratorKeys;
import de.danielluedecke.zettelkasten.database.AutoKorrektur;
import de.danielluedecke.zettelkasten.database.Daten;
import de.danielluedecke.zettelkasten.database.Settings;
import de.danielluedecke.zettelkasten.database.StenoData;
import de.danielluedecke.zettelkasten.database.Synonyms;
import de.danielluedecke.zettelkasten.database.TasksData;

/**
 * This class offers convenience access testable Zettelkasten objects.
 * 
 * @author Timm Heuss
 *
 */
public class TestObjectFactory {

	/**
	 * Implementation of a thread safe, synchronized singleton pattern
	 * {@link http://de.wikibooks.org/wiki/Java_Standard:_Muster_Singleton}.
	 */
	private static TestObjectFactory instance;

	public static synchronized TestObjectFactory getInstance() throws Exception {
		if (TestObjectFactory.instance == null) {
			TestObjectFactory.instance = new TestObjectFactory();
		}
		return TestObjectFactory.instance;
	}

	private final StenoData stenoData;
	private final AutoKorrektur autoKorrektur;
	private final TasksData tasksData;
	private final AcceleratorKeys acceleratorKeys;
	private final Synonyms synonyms;

	private TestObjectFactory() throws Exception {
		stenoData = null;
		autoKorrektur = null;
		tasksData = null;

		acceleratorKeys = new AcceleratorKeys();
		synonyms = new Synonyms();
	}

	/**
	 * Abstracts sample files and settings
	 */
	public enum ZKN3Settings {
		ZKN3_SAMPLE("zkn3_sample.zkn3", false), ZKN3_TRICKY_NON_MARKDOWN(
				"zkn3_tricky.zkn3", false), ZKN3_TRICKY_MARKDOWN(
				"zkn3_tricky.zkn3", true);

		public Settings settings;
		public File file;

		ZKN3Settings(String file, boolean markdownActivated) {
			try {
				settings = new Settings(
						TestObjectFactory.getInstance().acceleratorKeys,
						TestObjectFactory.getInstance().autoKorrektur,
						TestObjectFactory.getInstance().synonyms,
						TestObjectFactory.getInstance().stenoData);

				File fileObject = new File(TestObjectFactory.class
						.getClassLoader().getResource(file).getPath());
				settings.setFilePath(fileObject);
				this.file = fileObject;
				
				settings.setMarkdownActivated(markdownActivated);
			} catch (Exception e) {
				throw new RuntimeException(e);
			}
		}
	}

	public static Daten getDaten(ZKN3Settings zkn3Settings) throws Exception {
		Settings settings = zkn3Settings.settings;

		ZettelkastenView zettelkastenView = new ZettelkastenView(
				new SingleFrameApplication() {
					@Override
					protected void startup() {
					}
				}, settings, TestObjectFactory.getInstance().acceleratorKeys,
				TestObjectFactory.getInstance().autoKorrektur,
				TestObjectFactory.getInstance().synonyms,
				TestObjectFactory.getInstance().stenoData,
				TestObjectFactory.getInstance().tasksData);
		return (Daten) getPrivateField(zettelkastenView, "data");
	}

	/**
	 * Helper to retrieve a private / protected field.
     * @param instance
     * @param fieldName
     * @return 
     * @throws java.lang.Exception 
	 */
	public static Object getPrivateField(Object instance, String fieldName)
			throws Exception {
		Field field = instance.getClass().getDeclaredField(fieldName);
		field.setAccessible(true);
		return (Daten) field.get(instance);
	}
}