UIService: Remove obsolete App API

The App can (and should) be obtained from the AppService.

Author: ctrueden

src/main/java/org/scijava/ui/AbstractUserInterface.java

@@ -33,7 +33,6 @@
 
 import java.util.List;
 
-import org.scijava.app.App;
 import org.scijava.app.StatusService;
 import org.scijava.command.CommandService;
 import org.scijava.display.Display;
@@ -208,10 +207,4 @@ protected void createUI() {
 		restoreLocation();
 	}
 
-	// -- Helper methods --
-
-	protected App getApp() {
-		return uiService.getApp();
-	}
-
 }

src/main/java/org/scijava/ui/DefaultUIService.java

@@ -38,9 +38,7 @@
 import java.util.List;
 import java.util.Map;
 
-import org.scijava.app.App;
 import org.scijava.app.AppService;
-import org.scijava.app.SciJavaApp;
 import org.scijava.app.StatusService;
 import org.scijava.app.event.StatusEvent;
 import org.scijava.command.CommandService;
@@ -135,27 +133,13 @@ public final class DefaultUIService extends AbstractService implements
 	/** Whether lazy initialization is complete. */
 	private boolean initialized;
 
-	/** Application associated with the user interface. */
-	private App app;
-
 	/** The default user interface to use, if one is not explicitly specified. */
 	private UserInterface defaultUI;
 
 	private boolean activationInvocationPending = false;
 
 	// -- UIService methods --
 
-	@Override
-	public App getApp() {
-		if (!initialized) discoverUIs();
-		return app;
-	}
-
-	@Override
-	public void setApp(final App app) {
-		this.app = app;
-	}
-
 	@Override
 	public void addUI(final UserInterface ui) {
 		addUI(null, ui);
@@ -469,7 +453,6 @@ private Map<String, UserInterface> uiMap() {
 	private synchronized void discoverUIs() {
 		if (initialized) return;
 
-		app = appService.getApp(SciJavaApp.NAME);
 		displayViewers = new ArrayList<DisplayViewer<?>>();
 		uiList = new ArrayList<UserInterface>();
 		uiMap = new HashMap<String, UserInterface>();

src/main/java/org/scijava/ui/UIService.java

@@ -34,7 +34,6 @@
 import java.io.File;
 import java.util.List;
 
-import org.scijava.app.App;
 import org.scijava.app.StatusService;
 import org.scijava.app.event.StatusEvent;
 import org.scijava.display.Display;
@@ -55,12 +54,6 @@ public interface UIService extends SciJavaService {
 	/** System property to set for overriding the default UI. */
 	String UI_PROPERTY = "scijava.ui";
 
-	/** Gets the {@link App} associated with the user interface. */
-	App getApp();
-	
-	/** Sets the {@link App} associated with the user interface. */
-	void setApp(final App app);
-
 	/**
 	 * Adds the given UI to those managed by the service.
 	 * <p>