minor changes

* removing unused imports
* exchanging addListener() by Easybind.subscribe()

main/ui/src/main/java/org/cryptomator/ui/addvaultwizard/CreateNewVaultLocationController.java

@@ -1,5 +1,6 @@
 package org.cryptomator.ui.addvaultwizard;
 
+import com.tobiasdiez.easybind.EasyBind;
 import dagger.Lazy;
 import javafx.beans.binding.Bindings;
 import javafx.beans.binding.BooleanBinding;
@@ -83,11 +84,11 @@ public class CreateNewVaultLocationController implements FxController {
 	public void initialize() {
 		predefinedLocationToggler.selectedToggleProperty().addListener(this::togglePredefinedLocation);
 		usePresetPath.bind(predefinedLocationToggler.selectedToggleProperty().isNotEqualTo(customRadioButton));
-		vaultPath.addListener(this::vaultPathDidChange);
+		EasyBind.subscribe(vaultPath, this::vaultPathDidChange);
 	}
 
-	private void vaultPathDidChange(@SuppressWarnings("unused") ObservableValue<? extends Path> observable, @SuppressWarnings("unused") Path oldValue, Path newValue) {
-		if (!Files.notExists(newValue)) {
+	private void vaultPathDidChange(Path newValue) {
+		if ( newValue != null && !Files.notExists(newValue)) {
 			warningText.set(resourceBundle.getString("addvaultwizard.new.fileAlreadyExists"));
 		} else {
 			warningText.set(null);

main/ui/src/main/java/org/cryptomator/ui/addvaultwizard/CreateNewVaultPasswordController.java

@@ -32,7 +32,6 @@ import javax.inject.Named;
 import java.io.IOException;
 import java.io.UncheckedIOException;
 import java.nio.channels.WritableByteChannel;
-import java.nio.file.FileAlreadyExistsException;
 import java.nio.file.FileSystem;
 import java.nio.file.Files;
 import java.nio.file.NoSuchFileException;

main/ui/src/main/java/org/cryptomator/ui/fxapp/FxApplication.java

@@ -1,5 +1,6 @@
 package org.cryptomator.ui.fxapp;
 
+import com.tobiasdiez.easybind.EasyBind;
 import dagger.Lazy;
 import javafx.application.Application;
 import javafx.application.Platform;
@@ -64,7 +65,7 @@ public class FxApplication extends Application {
 		LOG.trace("FxApplication.start()");
 		Platform.setImplicitExit(false);
 
-		hasVisibleStages.addListener(this::hasVisibleStagesChanged);
+		EasyBind.subscribe(hasVisibleStages, this::hasVisibleStagesChanged);
 
 		settings.theme().addListener(this::themeChanged);
 		loadSelectedStyleSheet(settings.theme().get());
@@ -75,7 +76,7 @@ public class FxApplication extends Application {
 		throw new UnsupportedOperationException("Use start() instead.");
 	}
 
-	private void hasVisibleStagesChanged(@SuppressWarnings("unused") ObservableValue<? extends Boolean> observableValue, @SuppressWarnings("unused") boolean oldValue, boolean newValue) {
+	private void hasVisibleStagesChanged(boolean newValue) {
 		if (newValue) {
 			macFunctions.map(MacFunctions::uiState).ifPresent(MacApplicationUiState::transformToForegroundApplication);
 		} else {

main/ui/src/main/java/org/cryptomator/ui/mainwindow/VaultListController.java

@@ -1,16 +1,15 @@
 package org.cryptomator.ui.mainwindow;
 
+import com.tobiasdiez.easybind.EasyBind;
 import javafx.beans.binding.Bindings;
 import javafx.beans.binding.BooleanBinding;
 import javafx.beans.property.ObjectProperty;
-import javafx.beans.value.ObservableValue;
 import javafx.collections.ListChangeListener;
 import javafx.collections.ObservableList;
 import javafx.fxml.FXML;
 import javafx.scene.control.ListView;
 import org.cryptomator.common.vaults.Vault;
 import org.cryptomator.common.vaults.VaultListManager;
-import org.cryptomator.common.vaults.VaultState;
 import org.cryptomator.ui.addvaultwizard.AddVaultWizardComponent;
 import org.cryptomator.ui.common.FxController;
 import org.cryptomator.ui.removevault.RemoveVaultComponent;
@@ -18,7 +17,6 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import javax.inject.Inject;
-import java.io.IOException;
 
 @MainWindowScoped
 public class VaultListController implements FxController {
@@ -43,7 +41,7 @@ public class VaultListController implements FxController {
 		this.removeVault = removeVault;
 		this.noVaultSelected = selectedVault.isNull();
 		this.emptyVaultList = Bindings.isEmpty(vaults);
-		selectedVault.addListener(this::selectedVaultDidChange);
+		EasyBind.subscribe(selectedVault, this::selectedVaultDidChange);
 	}
 
 	public void initialize() {
@@ -60,11 +58,10 @@ public class VaultListController implements FxController {
 		});
 	}
 
-	private void selectedVaultDidChange(@SuppressWarnings("unused") ObservableValue<? extends Vault> observableValue, @SuppressWarnings("unused") Vault oldValue, Vault newValue) {
-		if (newValue == null) {
-			return;
+	private void selectedVaultDidChange(Vault newValue) {
+		if (newValue != null) {
+			VaultListManager.redetermineVaultState(newValue);
 		}
-		VaultListManager.redetermineVaultState(newValue);
 	}
 
 	@FXML