Refactor navigation handling

src/main/java/io/bitsquare/gui/NavigationItem.java

@@ -25,21 +25,21 @@ public enum NavigationItem {
     // Application
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    MAIN(0, "/io/bitsquare/gui/main/MainView.fxml"),
+    MAIN("/io/bitsquare/gui/main/MainView.fxml"),
 
 
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Main menu screens
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    HOME(1, "/io/bitsquare/gui/main/home/HomeView.fxml", ImageUtil.HOME, ImageUtil.HOME_ACTIVE),
+    HOME("/io/bitsquare/gui/main/home/HomeView.fxml", ImageUtil.HOME, ImageUtil.HOME_ACTIVE),
-    BUY(1, "/io/bitsquare/gui/main/trade/BuyView.fxml", ImageUtil.NAV_BUY, ImageUtil.NAV_BUY_ACTIVE),
+    BUY("/io/bitsquare/gui/main/trade/BuyView.fxml", ImageUtil.BUY, ImageUtil.BUY_ACTIVE),
-    SELL(1, "/io/bitsquare/gui/main/trade/SellView.fxml", ImageUtil.NAV_SELL, ImageUtil.NAV_SELL_ACTIVE),
+    SELL("/io/bitsquare/gui/main/trade/SellView.fxml", ImageUtil.SELL, ImageUtil.SELL_ACTIVE),
-    ORDERS(1, "/io/bitsquare/gui/main/orders/OrdersView.fxml", ImageUtil.ORDERS, ImageUtil.ORDERS_ACTIVE),
+    ORDERS("/io/bitsquare/gui/main/orders/OrdersView.fxml", ImageUtil.ORDERS, ImageUtil.ORDERS_ACTIVE),
-    FUNDS(1, "/io/bitsquare/gui/main/funds/FundsView.fxml", ImageUtil.FUNDS, ImageUtil.FUNDS_ACTIVE),
+    FUNDS("/io/bitsquare/gui/main/funds/FundsView.fxml", ImageUtil.FUNDS, ImageUtil.FUNDS_ACTIVE),
-    MSG(1, "/io/bitsquare/gui/main/msg/MsgView.fxml", ImageUtil.MSG, ImageUtil.MSG_ACTIVE),
+    MSG("/io/bitsquare/gui/main/msg/MsgView.fxml", ImageUtil.MSG, ImageUtil.MSG_ACTIVE),
-    SETTINGS(1, "/io/bitsquare/gui/main/settings/SettingsView.fxml", ImageUtil.SETTINGS, ImageUtil.SETTINGS_ACTIVE),
+    SETTINGS("/io/bitsquare/gui/main/settings/SettingsView.fxml", ImageUtil.SETTINGS, ImageUtil.SETTINGS_ACTIVE),
-    ACCOUNT(1, "/io/bitsquare/gui/main/account/AccountView.fxml", ImageUtil.ACCOUNT, ImageUtil.ACCOUNT_ACTIVE),
+    ACCOUNT("/io/bitsquare/gui/main/account/AccountView.fxml", ImageUtil.ACCOUNT, ImageUtil.ACCOUNT_ACTIVE),
 
 
     ///////////////////////////////////////////////////////////////////////////////////////////
@@ -47,23 +47,23 @@ public enum NavigationItem {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     // buy/sell (trade)
-    ORDER_BOOK(2, "/io/bitsquare/gui/main/trade/orderbook/OrderBookView.fxml"),
+    ORDER_BOOK("/io/bitsquare/gui/main/trade/orderbook/OrderBookView.fxml"),
-    CREATE_OFFER(2, "/io/bitsquare/gui/main/trade/createoffer/CreateOfferView.fxml"),
+    CREATE_OFFER("/io/bitsquare/gui/main/trade/createoffer/CreateOfferView.fxml"),
-    TAKE_OFFER(2, "/io/bitsquare/gui/main/trade/takeoffer/TakeOfferView.fxml"),
+    TAKE_OFFER("/io/bitsquare/gui/main/trade/takeoffer/TakeOfferView.fxml"),
 
     // orders
-    OFFER(2, "/io/bitsquare/gui/main/orders/offer/OfferView.fxml"),
+    OFFER("/io/bitsquare/gui/main/orders/offer/OfferView.fxml"),
-    PENDING_TRADE(2, "/io/bitsquare/gui/main/orders/pending/PendingTradeView.fxml"),
+    PENDING_TRADE("/io/bitsquare/gui/main/orders/pending/PendingTradeView.fxml"),
-    CLOSED_TRADE(2, "/io/bitsquare/gui/main/orders/closed/ClosedTradeView.fxml"),
+    CLOSED_TRADE("/io/bitsquare/gui/main/orders/closed/ClosedTradeView.fxml"),
 
     // funds
-    DEPOSIT(2, "/io/bitsquare/gui/main/funds/deposit/DepositView.fxml"),
+    DEPOSIT("/io/bitsquare/gui/main/funds/deposit/DepositView.fxml"),
-    WITHDRAWAL(2, "/io/bitsquare/gui/main/funds/withdrawal/WithdrawalView.fxml"),
+    WITHDRAWAL("/io/bitsquare/gui/main/funds/withdrawal/WithdrawalView.fxml"),
-    TRANSACTIONS(2, "/io/bitsquare/gui/main/funds/transactions/TransactionsView.fxml"),
+    TRANSACTIONS("/io/bitsquare/gui/main/funds/transactions/TransactionsView.fxml"),
 
     // account
-    ACCOUNT_SETUP(2, "/io/bitsquare/gui/main/account/setup/AccountSetupView.fxml"),
+    ACCOUNT_SETUP("/io/bitsquare/gui/main/account/setup/AccountSetupView.fxml"),
-    ACCOUNT_SETTINGS(2, "/io/bitsquare/gui/main/account/settings/AccountSettingsView.fxml"),
+    ACCOUNT_SETTINGS("/io/bitsquare/gui/main/account/settings/AccountSettingsView.fxml"),
 
 
     ///////////////////////////////////////////////////////////////////////////////////////////
@@ -71,12 +71,12 @@ public enum NavigationItem {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     // account content
-    SEED_WORDS(3, "/io/bitsquare/gui/main/account/content/seedwords/SeedWordsView.fxml"),
+    SEED_WORDS("/io/bitsquare/gui/main/account/content/seedwords/SeedWordsView.fxml"),
-    ADD_PASSWORD(3, "/io/bitsquare/gui/main/account/content/password/PasswordView.fxml"),
+    ADD_PASSWORD("/io/bitsquare/gui/main/account/content/password/PasswordView.fxml"),
-    CHANGE_PASSWORD(3, "/io/bitsquare/gui/main/account/content/password/PasswordView.fxml"),
+    CHANGE_PASSWORD("/io/bitsquare/gui/main/account/content/password/PasswordView.fxml"),
-    RESTRICTIONS(3, "/io/bitsquare/gui/main/account/content/restrictions/RestrictionsView.fxml"),
+    RESTRICTIONS("/io/bitsquare/gui/main/account/content/restrictions/RestrictionsView.fxml"),
-    REGISTRATION(3, "/io/bitsquare/gui/main/account/content/registration/RegistrationView.fxml"),
+    REGISTRATION("/io/bitsquare/gui/main/account/content/registration/RegistrationView.fxml"),
-    FIAT_ACCOUNT(3, "/io/bitsquare/gui/main/account/content/fiat/FiatAccountView.fxml"),
+    FIAT_ACCOUNT("/io/bitsquare/gui/main/account/content/fiat/FiatAccountView.fxml"),
 
 
     ///////////////////////////////////////////////////////////////////////////////////////////
@@ -84,39 +84,30 @@ public enum NavigationItem {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     // arbitrator
-    ARBITRATOR_PROFILE(2, "/io/bitsquare/gui/main/arbitrators/profile/ArbitratorProfileView.fxml"),
+    ARBITRATOR_PROFILE("/io/bitsquare/gui/main/arbitrators/profile/ArbitratorProfileView.fxml"),
-    ARBITRATOR_BROWSER(-1, "/io/bitsquare/gui/main/arbitrators/browser/ArbitratorBrowserView.fxml"),
+    ARBITRATOR_BROWSER("/io/bitsquare/gui/main/arbitrators/browser/ArbitratorBrowserView.fxml"),
-    ARBITRATOR_REGISTRATION(-1, "/io/bitsquare/gui/main/arbitrators/registration/ArbitratorRegistrationView.fxml");
+    ARBITRATOR_REGISTRATION("/io/bitsquare/gui/main/arbitrators/registration/ArbitratorRegistrationView.fxml");
 
 
-    private int level;
     private final String fxmlUrl;
     private String icon;
     private String activeIcon;
 
     /**
-     * @param level      The navigation hierarchy depth. 0 is main app level, 1 is main menu items, 2 is sub-menus,
-     *                   3 content in sub-menus, -1 is popup window
      * @param fxmlUrl
      * @param icon
      * @param activeIcon
      */
-    NavigationItem(int level, String fxmlUrl, String icon, String activeIcon) {
+    NavigationItem(String fxmlUrl, String icon, String activeIcon) {
-        this.level = level;
         this.fxmlUrl = fxmlUrl;
         this.icon = icon;
         this.activeIcon = activeIcon;
     }
 
-    NavigationItem(int level, String fxmlUrl) {
+    NavigationItem(String fxmlUrl) {
-        this.level = level;
         this.fxmlUrl = fxmlUrl;
     }
 
-    public int getLevel() {
-        return level;
-    }
-
     public String getFxmlUrl() {
         return fxmlUrl;
     }

src/main/java/io/bitsquare/gui/NavigationListener.java

@@ -1,22 +0,0 @@
-/*
- * This file is part of Bitsquare.
- *
- * Bitsquare is free software: you can redistribute it and/or modify it
- * under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or (at
- * your option) any later version.
- *
- * Bitsquare is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
- * License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Bitsquare. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package io.bitsquare.gui;
-
-public interface NavigationListener {
-    public void navigate(NavigationItem navigationItem);
-}

src/main/java/io/bitsquare/gui/NavigationManager.java

@@ -22,27 +22,34 @@ import io.bitsquare.persistence.Persistence;
 import com.google.inject.Inject;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 public class NavigationManager {
     private static final Logger log = LoggerFactory.getLogger(NavigationManager.class);
-    private Persistence persistence;
 
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Interface
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    public interface NavigationListener {
+    public interface Listener {
         void onNavigationRequested(NavigationItem... navigationItems);
     }
 
-    private List<NavigationListener> listeners = new ArrayList<>();
+    // New listeners can be added during iteration so we use CopyOnWriteArrayList to prevent invalid array 
-    private NavigationItem[] previousMainNavigationItems;
+    // modification 
+    private List<Listener> listeners = new CopyOnWriteArrayList<>();
+    private Persistence persistence;
     private NavigationItem[] currentNavigationItems;
 
+    // Used for returning to the last important view
+    // After setup is done we want to return to the last opened view (e.g. sell/buy)
+    private NavigationItem[] navigationItemsForReturning;
+
 
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Constructor
@@ -58,18 +65,38 @@ public class NavigationManager {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     public void navigationTo(NavigationItem... navigationItems) {
-        previousMainNavigationItems = currentNavigationItems;
+        log.trace("navigationTo " + Arrays.asList(navigationItems).toString());
+        List<NavigationItem> temp = new ArrayList<>();
+        for (int i = 0; i < navigationItems.length; i++) {
+            NavigationItem item = navigationItems[i];
+            temp.add(item);
+            if (currentNavigationItems == null ||
+                    (currentNavigationItems != null &&
+                            currentNavigationItems.length > i &&
+                            item != currentNavigationItems[i] &&
+                            i != navigationItems.length - 1)) {
+                List<NavigationItem> temp2 = new ArrayList<>(temp);
+                for (int n = i + 1; n < navigationItems.length; n++) {
+                    NavigationItem[] newTemp = new NavigationItem[i + 1];
+                    currentNavigationItems = temp2.toArray(newTemp);
+                    navigationTo(currentNavigationItems);
+                    item = navigationItems[n];
+                    temp2.add(item);
+                }
+            }
+        }
         currentNavigationItems = navigationItems;
 
         persistence.write(this, "navigationItems", navigationItems);
-
+        log.trace("navigationTo notify listeners " + Arrays.asList(navigationItems).toString() + " / " + listeners
+                .size());
         listeners.stream().forEach((e) -> e.onNavigationRequested(navigationItems));
     }
 
     public void navigateToLastStoredItem() {
         NavigationItem[] navigationItems = (NavigationItem[]) persistence.read(this, "navigationItems");
         if (navigationItems == null || navigationItems.length == 0)
-            navigationItems = new NavigationItem[]{NavigationItem.HOME};
+            navigationItems = new NavigationItem[]{NavigationItem.MAIN, NavigationItem.HOME};
 
         navigationTo(navigationItems);
     }
@@ -77,11 +104,11 @@ public class NavigationManager {
     // Listeners
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    public void addListener(NavigationListener listener) {
+    public void addListener(Listener listener) {
         listeners.add(listener);
     }
 
-    public void removeListener(NavigationListener listener) {
+    public void removeListener(Listener listener) {
         listeners.remove(listener);
     }
 
@@ -90,12 +117,21 @@ public class NavigationManager {
     // Getters
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    public NavigationItem[] getPreviousMainNavigationItems() {
+    public NavigationItem[] getNavigationItemsForReturning() {
-        return previousMainNavigationItems;
+        return navigationItemsForReturning;
     }
 
     public NavigationItem[] getCurrentNavigationItems() {
         return currentNavigationItems;
     }
 
+
+    ///////////////////////////////////////////////////////////////////////////////////////////
+    // Setters
+    ///////////////////////////////////////////////////////////////////////////////////////////
+
+    public void setNavigationItemsForReturning(NavigationItem[] navigationItemsForReturning) {
+        this.navigationItemsForReturning = navigationItemsForReturning;
+    }
+
 }

src/main/java/io/bitsquare/gui/ViewCB.java

@@ -83,7 +83,7 @@ public class ViewCB<T extends PresentationModel> implements Initializable {
      * @param navigationItem NavigationItem to be loaded.
      * @return The ViewController of the loaded view.
      */
-    public Initializable loadView(NavigationItem navigationItem) {
+    protected Initializable loadView(NavigationItem navigationItem) {
         log.trace("Lifecycle: loadViewAndGetChildController " + this.getClass().getSimpleName() + " / navigationItem " +
                 "= " + navigationItem);
         return null;

src/main/java/io/bitsquare/gui/main/MainViewCB.java

@@ -57,7 +57,6 @@ public class MainViewCB extends ViewCB<MainPM> {
     private final OverlayManager overlayManager;
 
     private final ToggleGroup navButtonsGroup = new ToggleGroup();
-    private NavigationItem mainNavigationItem;
 
     private BorderPane baseApplicationContainer;
     private VBox baseOverlayContainer;
@@ -97,20 +96,12 @@ public class MainViewCB extends ViewCB<MainPM> {
         Popups.setOverlayManager(overlayManager);
 
         navigationManager.addListener(navigationItems -> {
-            if (navigationItems != null) {
+            if (navigationItems != null && navigationItems.length == 2) {
-                for (NavigationItem navigationItem : navigationItems) {
+                if (navigationItems[0] == NavigationItem.MAIN) {
-                    if (navigationItem.getLevel() == 1) {
+                    loadView(navigationItems[1]);
-                        mainNavigationItem = navigationItem;
+                    selectMainMenuButton(navigationItems[1]);
-                        break;
-                    }
                 }
             }
-
-            if (mainNavigationItem == null)
-                mainNavigationItem = NavigationItem.HOME;
-
-            loadView(mainNavigationItem);
-            selectMainMenuButton(mainNavigationItem);
         });
 
         overlayManager.addListener(new OverlayManager.OverlayListener() {
@@ -140,9 +131,8 @@ public class MainViewCB extends ViewCB<MainPM> {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     @Override
-    public Initializable loadView(NavigationItem navigationItem) {
+    protected Initializable loadView(NavigationItem navigationItem) {
         super.loadView((navigationItem));
-
         final ViewLoader loader = new ViewLoader(getClass().getResource(navigationItem.getFxmlUrl()));
         try {
             final Node view = loader.load();
@@ -203,7 +193,9 @@ public class MainViewCB extends ViewCB<MainPM> {
             alertButton.setId("nav-alert-button");
             alertButton.relocate(36, 19);
             alertButton.setOnAction((e) ->
-                    navigationManager.navigationTo(NavigationItem.ORDERS, NavigationItem.PENDING_TRADE));
+                    navigationManager.navigationTo(NavigationItem.MAIN,
+                            NavigationItem.ORDERS,
+                            NavigationItem.PENDING_TRADE));
             Tooltip.install(alertButton, new Tooltip("Your offer has been accepted"));
             ordersButtonButtonPane.getChildren().add(alertButton);
 
@@ -399,8 +391,7 @@ public class MainViewCB extends ViewCB<MainPM> {
             }
         });
 
-        toggleButton.setOnAction(e -> navigationManager.navigationTo(navigationItem));
+        toggleButton.setOnAction(e -> navigationManager.navigationTo(NavigationItem.MAIN, navigationItem));
-        // toggleButton.setOnAction(e -> loadView(navigationItem));
 
         parent.getChildren().add(toggleButton);
         return toggleButton;

src/main/java/io/bitsquare/gui/main/account/AccountViewCB.java

@@ -21,7 +21,6 @@ import io.bitsquare.gui.CachedViewCB;
 import io.bitsquare.gui.NavigationItem;
 import io.bitsquare.gui.NavigationManager;
 import io.bitsquare.gui.ViewCB;
-import io.bitsquare.gui.main.account.setup.AccountSetupViewCB;
 import io.bitsquare.util.ViewLoader;
 
 import java.io.IOException;
@@ -45,6 +44,7 @@ public class AccountViewCB extends CachedViewCB<AccountPM> {
 
     public Tab tab;
     private NavigationManager navigationManager;
+    private NavigationManager.Listener listener;
 
 
     ///////////////////////////////////////////////////////////////////////////////////////////
@@ -54,6 +54,7 @@ public class AccountViewCB extends CachedViewCB<AccountPM> {
     @Inject
     private AccountViewCB(AccountPM presentationModel, NavigationManager navigationManager) {
         super(presentationModel);
+
         this.navigationManager = navigationManager;
     }
 
@@ -65,6 +66,13 @@ public class AccountViewCB extends CachedViewCB<AccountPM> {
     @SuppressWarnings("EmptyMethod")
     @Override
     public void initialize(URL url, ResourceBundle rb) {
+        listener = navigationItems -> {
+            if (navigationItems != null &&
+                    navigationItems.length == 3 &&
+                    navigationItems[1] == NavigationItem.ACCOUNT)
+                loadView(navigationItems[2]);
+        };
+
         super.initialize(url, rb);
     }
 
@@ -72,22 +80,24 @@ public class AccountViewCB extends CachedViewCB<AccountPM> {
     public void activate() {
         super.activate();
 
-        if (childController == null) {
+        navigationManager.addListener(listener);
-            if (presentationModel.getNeedRegistration()) {
+
-                childController = loadView(NavigationItem.ACCOUNT_SETUP);
+        if (navigationManager.getCurrentNavigationItems().length == 2 &&
-                tab.setText("Account setup");
+                navigationManager.getCurrentNavigationItems()[1] == NavigationItem.ACCOUNT) {
-            }
+            if (presentationModel.getNeedRegistration())
-            else {
+                navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.ACCOUNT,
-                childController = loadView(NavigationItem.ACCOUNT_SETTINGS);
+                        NavigationItem.ACCOUNT_SETUP);
-                tab.setText("Account settings");
+            else
-            }
+                navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.ACCOUNT,
+                        NavigationItem.ACCOUNT_SETTINGS);
         }
     }
 
-    @SuppressWarnings("EmptyMethod")
     @Override
     public void deactivate() {
         super.deactivate();
+
+        navigationManager.removeListener(listener);
     }
 
     @SuppressWarnings("EmptyMethod")
@@ -102,22 +112,17 @@ public class AccountViewCB extends CachedViewCB<AccountPM> {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     @Override
-    public Initializable loadView(NavigationItem navigationItem) {
+    protected Initializable loadView(NavigationItem navigationItem) {
         super.loadView(navigationItem);
 
+        tab.setText((navigationItem == NavigationItem.ACCOUNT_SETUP) ? "Account setup" : "Account settings");
         final ViewLoader loader = new ViewLoader(getClass().getResource(navigationItem.getFxmlUrl()));
         try {
-            Pane view = loader.load();
+            AnchorPane view = loader.load();
             tab.setContent(view);
             Initializable childController = loader.getController();
             ((ViewCB) childController).setParent(this);
 
-            if (childController instanceof AccountSetupViewCB)
-                ((AccountSetupViewCB) childController).setRemoveCallBack(() -> {
-                    removeSetup();
-                    return null;
-                });
-
         } catch (IOException e) {
             log.error("Loading view failed. FxmlUrl = " + NavigationItem.ACCOUNT_SETUP.getFxmlUrl());
             e.getStackTrace();
@@ -130,11 +135,6 @@ public class AccountViewCB extends CachedViewCB<AccountPM> {
     // Private
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    private void removeSetup() {
-        childController = null;
-
-        navigationManager.navigationTo(navigationManager.getPreviousMainNavigationItems());
-    }
 
 }
 

src/main/java/io/bitsquare/gui/main/account/content/restrictions/RestrictionsViewCB.java

@@ -185,7 +185,7 @@ public class RestrictionsViewCB extends CachedViewCB<RestrictionsPM> implements
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     @Override
-    public Initializable loadView(NavigationItem navigationItem) {
+    protected Initializable loadView(NavigationItem navigationItem) {
         // TODO caching causes exception
         final ViewLoader loader = new ViewLoader(getClass().getResource(navigationItem.getFxmlUrl()), false);
         try {
@@ -236,7 +236,7 @@ public class RestrictionsViewCB extends CachedViewCB<RestrictionsPM> implements
             public ListCell<Locale> call(ListView<Locale> list) {
                 return new ListCell<Locale>() {
                     final Label label = new Label();
-                    final ImageView icon = ImageUtil.getIconImageView(ImageUtil.REMOVE);
+                    final ImageView icon = ImageUtil.getIconImageView(ImageUtil.REMOVE_ICON);
                     final Button removeButton = new Button("", icon);
                     final AnchorPane pane = new AnchorPane(label, removeButton);
 
@@ -294,7 +294,7 @@ public class RestrictionsViewCB extends CachedViewCB<RestrictionsPM> implements
             public ListCell<Country> call(ListView<Country> list) {
                 return new ListCell<Country>() {
                     final Label label = new Label();
-                    final ImageView icon = ImageUtil.getIconImageView(ImageUtil.REMOVE);
+                    final ImageView icon = ImageUtil.getIconImageView(ImageUtil.REMOVE_ICON);
                     final Button removeButton = new Button("", icon);
                     final AnchorPane pane = new AnchorPane(label, removeButton);
 
@@ -338,7 +338,7 @@ public class RestrictionsViewCB extends CachedViewCB<RestrictionsPM> implements
             public ListCell<Arbitrator> call(ListView<Arbitrator> list) {
                 return new ListCell<Arbitrator>() {
                     final Label label = new Label();
-                    final ImageView icon = ImageUtil.getIconImageView(ImageUtil.REMOVE);
+                    final ImageView icon = ImageUtil.getIconImageView(ImageUtil.REMOVE_ICON);
                     final Button removeButton = new Button("", icon);
                     final AnchorPane pane = new AnchorPane(label, removeButton);
 

src/main/java/io/bitsquare/gui/main/account/settings/AccountSettingsViewCB.java

@@ -33,9 +33,9 @@ import java.util.ResourceBundle;
 
 import javax.inject.Inject;
 
+import javafx.fxml.FXML;
 import javafx.fxml.Initializable;
 import javafx.geometry.Pos;
-import javafx.scene.*;
 import javafx.scene.control.*;
 import javafx.scene.layout.*;
 import javafx.scene.paint.*;
@@ -50,12 +50,13 @@ public class AccountSettingsViewCB extends CachedViewCB<AccountSettingsPM> {
 
     private static final Logger log = LoggerFactory.getLogger(AccountSettingsViewCB.class);
 
-    public NavigationItem subMenuNavigationItem;
-
-    public VBox leftVBox;
-    public AnchorPane content;
     private MenuItem seedWords, password, restrictions, fiatAccount, registration;
     private NavigationManager navigationManager;
+    private NavigationManager.Listener listener;
+
+    @FXML VBox leftVBox;
+    @FXML AnchorPane content;
+
 
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Constructor
@@ -75,18 +76,25 @@ public class AccountSettingsViewCB extends CachedViewCB<AccountSettingsPM> {
 
     @Override
     public void initialize(URL url, ResourceBundle rb) {
-        super.initialize(url, rb);
+        listener = navigationItems -> {
+            if (navigationItems != null &&
+                    navigationItems.length == 4 &&
+                    navigationItems[2] == NavigationItem.ACCOUNT_SETTINGS) {
+                loadView(navigationItems[3]);
+                selectMainMenuButton(navigationItems[3]);
+            }
+        };
 
         ToggleGroup toggleGroup = new ToggleGroup();
-        seedWords = new MenuItem(this, content, "Wallet seed",
+        seedWords = new MenuItem(navigationManager, "Wallet seed",
                 NavigationItem.SEED_WORDS, toggleGroup);
-        password = new MenuItem(this, content, "Wallet password",
+        password = new MenuItem(navigationManager, "Wallet password",
                 NavigationItem.CHANGE_PASSWORD, toggleGroup);
-        restrictions = new MenuItem(this, content, "Trading restrictions",
+        restrictions = new MenuItem(navigationManager, "Trading restrictions",
                 NavigationItem.RESTRICTIONS, toggleGroup);
-        fiatAccount = new MenuItem(this, content, "Payments account(s)",
+        fiatAccount = new MenuItem(navigationManager, "Payments account(s)",
                 NavigationItem.FIAT_ACCOUNT, toggleGroup);
-        registration = new MenuItem(this, content, "Renew your account",
+        registration = new MenuItem(navigationManager, "Renew your account",
                 NavigationItem.REGISTRATION, toggleGroup);
 
         registration.setDisable(true);
@@ -94,27 +102,72 @@ public class AccountSettingsViewCB extends CachedViewCB<AccountSettingsPM> {
         leftVBox.getChildren().addAll(seedWords, password,
                 restrictions, fiatAccount, registration);
 
-
+        super.initialize(url, rb);
     }
 
     @Override
     public void activate() {
         super.activate();
 
-        NavigationItem[] navigationItems = navigationManager.getCurrentNavigationItems();
+        navigationManager.addListener(listener);
-        for (int i = 0; i < navigationItems.length; i++) {
+        NavigationItem[] items = navigationManager.getCurrentNavigationItems();
-            if (navigationItems[i].getLevel() == 3) {
+        if (items.length == 3 &&
-                subMenuNavigationItem = navigationItems[i];
+                items[2] == NavigationItem.ACCOUNT_SETTINGS) {
-                break;
+            navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.ACCOUNT,
+                    NavigationItem.ACCOUNT_SETTINGS, NavigationItem.SEED_WORDS);
+        }
+        else {
+            if (items != null &&
+                    items.length == 4 &&
+                    items[2] == NavigationItem.ACCOUNT_SETTINGS) {
+                loadView(items[3]);
+                selectMainMenuButton(items[3]);
             }
         }
+    }
 
-        if (subMenuNavigationItem == null)
+    @Override
-            subMenuNavigationItem = NavigationItem.SEED_WORDS;
+    public void deactivate() {
+        super.deactivate();
 
-        loadView(subMenuNavigationItem);
+        navigationManager.removeListener(listener);
+    }
 
-        switch (subMenuNavigationItem) {
+    @SuppressWarnings("EmptyMethod")
+    @Override
+    public void terminate() {
+        super.terminate();
+    }
+
+
+    ///////////////////////////////////////////////////////////////////////////////////////////
+    // Public Methods
+    ///////////////////////////////////////////////////////////////////////////////////////////
+
+    @Override
+    protected Initializable loadView(NavigationItem navigationItem) {
+        final ViewLoader loader = new ViewLoader(getClass().getResource(navigationItem.getFxmlUrl()));
+        try {
+            final Pane view = loader.load();
+            content.getChildren().setAll(view);
+            childController = loader.getController();
+            ((ViewCB<? extends PresentationModel>) childController).setParent(this);
+            ((ContextAware) childController).useSettingsContext(true);
+            return childController;
+        } catch (IOException e) {
+            log.error("Loading view failed. FxmlUrl = " + navigationItem.getFxmlUrl());
+            e.getStackTrace();
+        }
+        return null;
+    }
+
+
+    ///////////////////////////////////////////////////////////////////////////////////////////
+    // Private
+    ///////////////////////////////////////////////////////////////////////////////////////////
+
+    private void selectMainMenuButton(NavigationItem navigationItem) {
+        switch (navigationItem) {
             case SEED_WORDS:
                 seedWords.setSelected(true);
                 break;
@@ -131,60 +184,17 @@ public class AccountSettingsViewCB extends CachedViewCB<AccountSettingsPM> {
                 registration.setSelected(true);
                 break;
             default:
-                log.error(subMenuNavigationItem.getFxmlUrl() + " is no subMenuNavigationItem");
+                log.error(navigationItem.getFxmlUrl() + " is invalid");
                 break;
         }
     }
-
-    @SuppressWarnings("EmptyMethod")
-    @Override
-    public void deactivate() {
-        super.deactivate();
-    }
-
-    @SuppressWarnings("EmptyMethod")
-    @Override
-    public void terminate() {
-        super.terminate();
-    }
-
-
-    ///////////////////////////////////////////////////////////////////////////////////////////
-    // Public Methods
-    ///////////////////////////////////////////////////////////////////////////////////////////
-
-    @Override
-    public Initializable loadView(NavigationItem navigationItem) {
-        final ViewLoader loader = new ViewLoader(getClass().getResource(navigationItem.getFxmlUrl()));
-        try {
-            final Pane view = loader.load();
-            content.getChildren().setAll(view);
-            childController = loader.getController();
-            ((ViewCB<? extends PresentationModel>) childController).setParent(this);
-            ((ContextAware) childController).useSettingsContext(true);
-            return childController;
-        } catch (IOException e) {
-            log.error("Loading view failed. FxmlUrl = " + navigationItem.getFxmlUrl());
-            e.getStackTrace();
-        }
-        return null;
-    }
 }
 
 class MenuItem extends ToggleButton {
     private static final Logger log = LoggerFactory.getLogger(MenuItem.class);
 
-    private ViewCB<? extends PresentationModel> childController;
+    MenuItem(NavigationManager navigationManager, String title, NavigationItem navigationItem,
-
-    private final AccountSettingsViewCB parentCB;
-    private final Parent content;
-    private final NavigationItem navigationItem;
-
-    MenuItem(AccountSettingsViewCB parentCB, Parent content, String title, NavigationItem navigationItem,
              ToggleGroup toggleGroup) {
-        this.parentCB = parentCB;
-        this.content = content;
-        this.navigationItem = navigationItem;
 
         setToggleGroup(toggleGroup);
         setText(title);
@@ -204,7 +214,8 @@ class MenuItem extends ToggleButton {
 
         setGraphic(icon);
 
-        setOnAction((event) -> parentCB.loadView(navigationItem));
+        setOnAction((event) -> navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.ACCOUNT,
+                NavigationItem.ACCOUNT_SETTINGS, navigationItem));
 
         selectedProperty().addListener((ov, oldValue, newValue) -> {
             if (newValue) {

src/main/java/io/bitsquare/gui/main/account/setup/AccountSetupViewCB.java

@@ -19,6 +19,7 @@ package io.bitsquare.gui.main.account.setup;
 
 import io.bitsquare.gui.CachedViewCB;
 import io.bitsquare.gui.NavigationItem;
+import io.bitsquare.gui.NavigationManager;
 import io.bitsquare.gui.PresentationModel;
 import io.bitsquare.gui.ViewCB;
 import io.bitsquare.gui.main.account.MultiStepNavigation;
@@ -36,14 +37,12 @@ import java.io.IOException;
 import java.net.URL;
 
 import java.util.ResourceBundle;
-import java.util.concurrent.Callable;
 
 import javax.inject.Inject;
 
 import javafx.fxml.FXML;
 import javafx.fxml.Initializable;
 import javafx.geometry.Insets;
-import javafx.scene.*;
 import javafx.scene.control.*;
 import javafx.scene.image.*;
 import javafx.scene.layout.*;
@@ -56,10 +55,11 @@ public class AccountSetupViewCB extends CachedViewCB<AccountSetupPM> implements
     private static final Logger log = LoggerFactory.getLogger(AccountSetupViewCB.class);
 
     private WizardItem seedWords, password, fiatAccount, restrictions, registration;
-    private Callable<Void> requestCloseCallable;
+    private NavigationManager navigationManager;
+    private NavigationManager.Listener listener;
 
-    @FXML private VBox leftVBox;
+    @FXML VBox leftVBox;
-    @FXML private AnchorPane content;
+    @FXML AnchorPane content;
 
 
     ///////////////////////////////////////////////////////////////////////////////////////////
@@ -67,8 +67,9 @@ public class AccountSetupViewCB extends CachedViewCB<AccountSetupPM> implements
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     @Inject
-    private AccountSetupViewCB(AccountSetupPM presentationModel) {
+    private AccountSetupViewCB(AccountSetupPM presentationModel, NavigationManager navigationManager) {
         super(presentationModel);
+        this.navigationManager = navigationManager;
     }
 
 
@@ -78,37 +79,49 @@ public class AccountSetupViewCB extends CachedViewCB<AccountSetupPM> implements
 
     @Override
     public void initialize(URL url, ResourceBundle rb) {
-        super.initialize(url, rb);
+        listener = navigationItems -> {
+            if (navigationItems != null &&
+                    navigationItems.length == 4 &&
+                    navigationItems[2] == NavigationItem.ACCOUNT_SETUP) {
+                loadView(navigationItems[3]);
+            }
+        };
 
-        seedWords = new WizardItem(this, content, "Backup wallet seed", "Write down the seed word for your wallet",
+        seedWords = new WizardItem(navigationManager, "Backup wallet seed", "Write down the seed word for your wallet",
                 NavigationItem.SEED_WORDS);
-        password = new WizardItem(this, content, "Setup password", "Protect your wallet with a password",
+        password = new WizardItem(navigationManager, "Setup password", "Protect your wallet with a password",
                 NavigationItem.ADD_PASSWORD);
-        restrictions = new WizardItem(this, content, "Setup your preferences",
+        restrictions = new WizardItem(navigationManager, "Setup your preferences",
                 "Define your preferences with whom you want to trade",
                 NavigationItem.RESTRICTIONS);
-        fiatAccount = new WizardItem(this, content, " Setup Payments account(s)",
+        fiatAccount = new WizardItem(navigationManager, " Setup Payments account(s)",
                 "You need to add a payments account to your trading account",
                 NavigationItem.FIAT_ACCOUNT);
-        registration = new WizardItem(this, content, "Register your account",
+        registration = new WizardItem(navigationManager, "Register your account",
                 "Pay in the registration fee of 0.0002 BTC and store your account in the BTC block chain",
                 NavigationItem.REGISTRATION);
 
         leftVBox.getChildren().addAll(seedWords, password, restrictions, fiatAccount, registration);
 
-        childController = seedWords.show();
+        super.initialize(url, rb);
     }
 
-    @SuppressWarnings("EmptyMethod")
+
     @Override
     public void activate() {
         super.activate();
+
+        navigationManager.addListener(listener);
+
+        // triggers navigationTo
+        childController = seedWords.show();
     }
 
-    @SuppressWarnings("EmptyMethod")
     @Override
     public void deactivate() {
         super.deactivate();
+
+        navigationManager.removeListener(listener);
     }
 
     @SuppressWarnings("EmptyMethod")
@@ -143,13 +156,7 @@ public class AccountSetupViewCB extends CachedViewCB<AccountSetupPM> implements
             registration.onCompleted();
             childController = null;
 
-            if (requestCloseCallable != null) {
+            navigationManager.navigationTo(navigationManager.getNavigationItemsForReturning());
-                try {
-                    requestCloseCallable.call();
-                } catch (Exception e) {
-                    e.printStackTrace();
-                }
-            }
         }
     }
 
@@ -158,13 +165,8 @@ public class AccountSetupViewCB extends CachedViewCB<AccountSetupPM> implements
     // Public Methods
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    public void setRemoveCallBack(Callable<Void> requestCloseCallable) {
-
-        this.requestCloseCallable = requestCloseCallable;
-    }
-
     @Override
-    public Initializable loadView(NavigationItem navigationItem) {
+    protected Initializable loadView(NavigationItem navigationItem) {
         final ViewLoader loader = new ViewLoader(getClass().getResource(navigationItem.getFxmlUrl()));
         try {
             final Pane view = loader.load();
@@ -189,14 +191,12 @@ class WizardItem extends HBox {
     private final ImageView imageView;
     private final Label titleLabel;
     private final Label subTitleLabel;
-    private final AccountSetupViewCB parentCB;
-    private final Parent content;
     private final NavigationItem navigationItem;
+    private final NavigationManager navigationManager;
 
-    WizardItem(AccountSetupViewCB parentCB, Parent content, String title, String subTitle,
+    WizardItem(NavigationManager navigationManager, String title, String subTitle,
                NavigationItem navigationItem) {
-        this.parentCB = parentCB;
+        this.navigationManager = navigationManager;
-        this.content = content;
         this.navigationItem = navigationItem;
 
         setId("wizard-item-background-deactivated");
@@ -233,7 +233,9 @@ class WizardItem extends HBox {
     }
 
     ViewCB<? extends PresentationModel> show() {
-        parentCB.loadView(navigationItem);
+        navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.ACCOUNT, NavigationItem.ACCOUNT_SETUP,
+                navigationItem);
+
         setId("wizard-item-background-active");
         imageView.setImage(ImageUtil.getIconImage(ImageUtil.ARROW_BLUE));
         titleLabel.setId("wizard-title-active");

src/main/java/io/bitsquare/gui/main/orders/offer/OfferController.java

@@ -155,7 +155,7 @@ public class OfferController extends CachedViewController {
                     @Override
                     public TableCell<String, OfferListItem> call(TableColumn<String, OfferListItem> directionColumn) {
                         return new TableCell<String, OfferListItem>() {
-                            final ImageView iconView = ImageUtil.getIconImageView(ImageUtil.REMOVE);
+                            final ImageView iconView = ImageUtil.getIconImageView(ImageUtil.REMOVE_ICON);
                             final Button button = new Button();
 
                             {

src/main/java/io/bitsquare/gui/main/orders/pending/PendingTradeController.java

@@ -78,8 +78,8 @@ public class PendingTradeController extends CachedViewController {
 
     private Trade currentTrade;
 
-    private final Image buyIcon = ImageUtil.getIconImage(ImageUtil.BUY);
+    private final Image buyIcon = ImageUtil.getIconImage(ImageUtil.BUY_ICON);
-    private final Image sellIcon = ImageUtil.getIconImage(ImageUtil.SELL);
+    private final Image sellIcon = ImageUtil.getIconImage(ImageUtil.SELL_ICON);
     private ConfidenceDisplay confidenceDisplay;
 
     @FXML private TableView openTradesTable;

src/main/java/io/bitsquare/gui/main/trade/BuyViewCB.java

@@ -17,13 +17,15 @@
 
 package io.bitsquare.gui.main.trade;
 
+import io.bitsquare.gui.NavigationManager;
+
 import javax.inject.Inject;
 
 public class BuyViewCB extends TradeViewCB {
 
     @Inject
-    public BuyViewCB() {
+    public BuyViewCB(NavigationManager navigationManager) {
-        super();
+        super(navigationManager);
     }
 }
 

src/main/java/io/bitsquare/gui/main/trade/OrderBookInfo.java

@@ -18,6 +18,7 @@
 package io.bitsquare.gui.main.trade;
 
 import io.bitsquare.trade.Direction;
+import io.bitsquare.trade.Offer;
 
 import com.google.bitcoin.core.Coin;
 import com.google.bitcoin.utils.Fiat;
@@ -36,6 +37,9 @@ public class OrderBookInfo {
     private Fiat volume;
 
 
+    private Offer offer;
+
+
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Constructor
     ///////////////////////////////////////////////////////////////////////////////////////////
@@ -64,6 +68,9 @@ public class OrderBookInfo {
         this.direction.set(direction);
     }
 
+    public Offer getOffer() {
+        return offer;
+    }
 
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Getters
@@ -88,4 +95,8 @@ public class OrderBookInfo {
     public ObjectProperty<Direction> directionProperty() {
         return direction;
     }
+
+    public void setOffer(Offer offer) {
+        this.offer = offer;
+    }
 }

src/main/java/io/bitsquare/gui/main/trade/SellViewCB.java

@@ -17,13 +17,15 @@
 
 package io.bitsquare.gui.main.trade;
 
+import io.bitsquare.gui.NavigationManager;
+
 import javax.inject.Inject;
 
 public class SellViewCB extends TradeViewCB {
 
     @Inject
-    public SellViewCB() {
+    public SellViewCB(NavigationManager navigationManager) {
-        super();
+        super(navigationManager);
     }
 }
 

src/main/java/io/bitsquare/gui/main/trade/TradeViewCB.java

@@ -19,6 +19,7 @@ package io.bitsquare.gui.main.trade;
 
 import io.bitsquare.gui.CachedViewCB;
 import io.bitsquare.gui.NavigationItem;
+import io.bitsquare.gui.NavigationManager;
 import io.bitsquare.gui.components.InputTextField;
 import io.bitsquare.gui.main.trade.createoffer.CreateOfferViewCB;
 import io.bitsquare.gui.main.trade.orderbook.OrderBookViewCB;
@@ -42,8 +43,6 @@ import javafx.scene.control.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import static com.google.common.base.Preconditions.checkArgument;
-
 public class TradeViewCB extends CachedViewCB {
     private static final Logger log = LoggerFactory.getLogger(TradeViewCB.class);
 
@@ -52,14 +51,19 @@ public class TradeViewCB extends CachedViewCB {
     private CreateOfferViewCB createOfferViewCB;
     private TakeOfferController takeOfferController;
     private Node createOfferView;
+    private NavigationManager navigationManager;
+    private NavigationManager.Listener listener;
+    private NavigationItem tradeNavigationItem;
 
 
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Constructor
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    protected TradeViewCB() {
+    protected TradeViewCB(NavigationManager navigationManager) {
         super();
+
+        this.navigationManager = navigationManager;
     }
 
 
@@ -67,15 +71,19 @@ public class TradeViewCB extends CachedViewCB {
     // Lifecycle
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    @SuppressWarnings("EmptyMethod")
     @Override
     public void initialize(URL url, ResourceBundle rb) {
-        super.initialize(url, rb);
+        listener = navigationItems -> {
+            if (navigationItems != null && navigationItems.length == 3 && navigationItems[1] == tradeNavigationItem) {
+                loadView(navigationItems[2]);
+            }
+        };
 
         Direction direction = (this instanceof BuyViewCB) ? Direction.BUY : Direction.SELL;
         orderBookInfo.setDirection(direction);
+        tradeNavigationItem = (direction == Direction.BUY) ? NavigationItem.BUY : NavigationItem.SELL;
 
-        loadView(NavigationItem.ORDER_BOOK);
+        super.initialize(url, rb);
     }
 
     @Override
@@ -83,8 +91,9 @@ public class TradeViewCB extends CachedViewCB {
         super.activate();
 
         // We need to remove open validation error popups
-        // TODO Find a way to do that in the InputTextField directly, but a tab change does not trigger any event there
+        // TODO Find a way to do that in the InputTextField directly, but a tab change does not trigger any event
-        // Platform.runLater needed as focusout evetn is called after selectedIndexProperty changed
+        // there
+        // Platform.runLater needed as focus-out event is called after selectedIndexProperty changed
         TabPane tabPane = (TabPane) root;
         tabPane.getSelectionModel().selectedIndexProperty()
                 .addListener((observableValue, oldValue, newValue) ->
@@ -94,9 +103,13 @@ public class TradeViewCB extends CachedViewCB {
         tabPane.getTabs().addListener((ListChangeListener<Tab>) change -> {
             change.next();
             List<? extends Tab> removedTabs = change.getRemoved();
-            if (removedTabs.size() == 1 && removedTabs.get(0).getContent().equals(createOfferView))
+            if (removedTabs.size() == 1 && removedTabs.get(0).getContent().equals(createOfferView)) {
                 onCreateOfferViewRemoved();
+            }
         });
+
+        navigationManager.addListener(listener);
+        navigationManager.navigationTo(NavigationItem.MAIN, tradeNavigationItem, NavigationItem.ORDER_BOOK);
     }
 
     @SuppressWarnings("EmptyMethod")
@@ -117,12 +130,11 @@ public class TradeViewCB extends CachedViewCB {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     // @Override
-    public Initializable loadView(NavigationItem navigationItem) {
-        super.loadView(navigationItem);
 
+    protected Initializable loadView(NavigationItem navigationItem) {
+        super.loadView(navigationItem);
         TabPane tabPane = (TabPane) root;
-        if (navigationItem == NavigationItem.ORDER_BOOK) {
+        if (navigationItem == NavigationItem.ORDER_BOOK && orderBookViewCB == null) {
-            checkArgument(orderBookViewCB == null);
             // Orderbook must not be cached by GuiceFXMLLoader as we use 2 instances for sell and buy screens.
             ViewLoader orderBookLoader =
                     new ViewLoader(getClass().getResource(navigationItem.getFxmlUrl()), false);
@@ -135,16 +147,14 @@ public class TradeViewCB extends CachedViewCB {
                 orderBookViewCB = orderBookLoader.getController();
                 orderBookViewCB.setParent(this);
                 orderBookViewCB.setOrderBookInfo(orderBookInfo);
-                orderBookViewCB.setNavigationListener(n -> loadView(n));
+                // orderBookViewCB.setNavigationListener(n -> loadView(n));
 
                 return orderBookViewCB;
             } catch (IOException e) {
                 log.error(e.getMessage());
             }
         }
-        else if (navigationItem == NavigationItem.CREATE_OFFER) {
+        else if (navigationItem == NavigationItem.CREATE_OFFER && createOfferViewCB == null) {
-            checkArgument(createOfferViewCB == null);
-
             // CreateOffer and TakeOffer must not be cached by GuiceFXMLLoader as we cannot use a view multiple times
             // in different graphs
             ViewLoader loader = new ViewLoader(getClass().getResource(navigationItem.getFxmlUrl()), false);
@@ -163,9 +173,7 @@ public class TradeViewCB extends CachedViewCB {
                 log.error(e.getMessage());
             }
         }
-        else if (navigationItem == NavigationItem.TAKE_OFFER) {
+        else if (navigationItem == NavigationItem.TAKE_OFFER && takeOfferController == null) {
-            checkArgument(takeOfferController == null);
-
             // CreateOffer and TakeOffer must not be cached by GuiceFXMLLoader as we cannot use a view multiple times
             // in different graphs
             ViewLoader loader = new ViewLoader(getClass().getResource(navigationItem.getFxmlUrl()), false);
@@ -173,10 +181,12 @@ public class TradeViewCB extends CachedViewCB {
                 final Parent view = loader.load();
                 takeOfferController = loader.getController();
                 takeOfferController.setParentController(this);
+                takeOfferController.initWithData(orderBookInfo);
                 final Tab tab = new Tab("Take offer");
                 tab.setContent(view);
                 tabPane.getTabs().add(tab);
                 tabPane.getSelectionModel().select(tab);
+
                 return takeOfferController;
             } catch (IOException e) {
                 log.error(e.getMessage());
@@ -207,6 +217,9 @@ public class TradeViewCB extends CachedViewCB {
         if (createOfferViewCB != null)
             createOfferViewCB = null;
         orderBookViewCB.enableCreateOfferButton();
+
+        // update the navigation state
+        navigationManager.navigationTo(NavigationItem.MAIN, tradeNavigationItem, NavigationItem.ORDER_BOOK);
     }
 }
 

src/main/java/io/bitsquare/gui/main/trade/createoffer/CreateOfferViewCB.java

@@ -237,7 +237,8 @@ public class CreateOfferViewCB extends CachedViewCB<CreateOfferPM> {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     private void openAccountSettings() {
-        navigationManager.navigationTo(NavigationItem.ACCOUNT,
+        navigationManager.navigationTo(NavigationItem.MAIN,
+                NavigationItem.ACCOUNT,
                 NavigationItem.ACCOUNT_SETTINGS,
                 NavigationItem.RESTRICTIONS);
     }

src/main/java/io/bitsquare/gui/main/trade/orderbook/OrderBookViewCB.java

@@ -19,16 +19,11 @@ package io.bitsquare.gui.main.trade.orderbook;
 
 import io.bitsquare.gui.CachedViewCB;
 import io.bitsquare.gui.NavigationItem;
-import io.bitsquare.gui.NavigationListener;
 import io.bitsquare.gui.NavigationManager;
 import io.bitsquare.gui.OverlayManager;
-import io.bitsquare.gui.ViewCB;
-import io.bitsquare.gui.ViewController;
 import io.bitsquare.gui.components.InputTextField;
 import io.bitsquare.gui.components.Popups;
 import io.bitsquare.gui.main.trade.OrderBookInfo;
-import io.bitsquare.gui.main.trade.takeoffer.TakeOfferController;
-import io.bitsquare.gui.util.BSFormatter;
 import io.bitsquare.gui.util.ImageUtil;
 import io.bitsquare.gui.util.validation.OptionalBtcValidator;
 import io.bitsquare.gui.util.validation.OptionalFiatValidator;
@@ -37,8 +32,6 @@ import io.bitsquare.locale.Country;
 import io.bitsquare.trade.Direction;
 import io.bitsquare.trade.Offer;
 
-import com.google.bitcoin.core.Coin;
-
 import java.net.URL;
 
 import java.util.ArrayList;
@@ -69,32 +62,30 @@ import static javafx.beans.binding.Bindings.createStringBinding;
 public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
     private static final Logger log = LoggerFactory.getLogger(OrderBookViewCB.class);
 
-    //TODO nav?
     private NavigationManager navigationManager;
+    private NavigationItem tradeNavigationItem;
     private OverlayManager overlayManager;
     private OptionalBtcValidator optionalBtcValidator;
     private OptionalFiatValidator optionalFiatValidator;
-    private NavigationListener navigationListener;
 
     private boolean detailsVisible;
     private boolean advancedScreenInited;
 
-    private final Image buyIcon = ImageUtil.getIconImage(ImageUtil.BUY);
+    private final Image buyIcon = ImageUtil.getIconImage(ImageUtil.BUY_ICON);
-    private final Image sellIcon = ImageUtil.getIconImage(ImageUtil.SELL);
+    private final Image sellIcon = ImageUtil.getIconImage(ImageUtil.SELL_ICON);
 
     private ImageView expand;
     private ImageView collapse;
 
-    @FXML private CheckBox extendedCheckBox;
+    @FXML CheckBox extendedCheckBox;
-    @FXML private Label amountBtcLabel, priceDescriptionLabel, priceFiatLabel, volumeDescriptionLabel,
+    @FXML Label amountBtcLabel, priceDescriptionLabel, priceFiatLabel, volumeDescriptionLabel,
             volumeFiatLabel, extendedButton1Label, extendedButton2Label, extendedCheckBoxLabel;
-    @FXML private InputTextField volumeTextField, amountTextField, priceTextField;
+    @FXML InputTextField volumeTextField, amountTextField, priceTextField;
-    @FXML private TableView<OrderBookListItem> orderBookTable;
+    @FXML TableView<OrderBookListItem> orderBookTable;
-    @FXML private Button createOfferButton, showAdvancedSettingsButton, extendedButton1, extendedButton2;
+    @FXML Button createOfferButton, showAdvancedSettingsButton, extendedButton1, extendedButton2;
-    @FXML private TableColumn<OrderBookListItem, OrderBookListItem> priceColumn, amountColumn, volumeColumn,
+    @FXML TableColumn<OrderBookListItem, OrderBookListItem> priceColumn, amountColumn, volumeColumn,
             directionColumn, countryColumn, bankAccountTypeColumn;
 
-
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Constructor
     ///////////////////////////////////////////////////////////////////////////////////////////
@@ -120,8 +111,6 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
 
     @Override
     public void initialize(URL url, ResourceBundle rb) {
-        super.initialize(url, rb);
-
         // init table
         setAmountColumnCellFactory();
         setPriceColumnCellFactory();
@@ -129,72 +118,41 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
         setCountryColumnCellFactory();
         setBankAccountTypeColumnCellFactory();
         setDirectionColumnCellFactory();
-        //setRowFactory();
-
-        amountTextField.textProperty().bindBidirectional(presentationModel.amount);
-        priceTextField.textProperty().bindBidirectional(presentationModel.price);
-        volumeTextField.textProperty().bindBidirectional(presentationModel.volume);
-        amountBtcLabel.textProperty().bind(presentationModel.btcCode);
-        priceFiatLabel.textProperty().bind(presentationModel.fiatCode);
-        volumeFiatLabel.textProperty().bind(presentationModel.fiatCode);
-        priceDescriptionLabel.textProperty().bind(presentationModel.fiatCode);
-        volumeDescriptionLabel.textProperty().bind(presentationModel.fiatCode);//Price per Bitcoin in EUR
-        priceDescriptionLabel.textProperty().bind(createStringBinding(() ->
-                        BSResources.get("Filter by price in {0}", presentationModel.fiatCode.get()),
-                presentationModel.fiatCode));
-        volumeDescriptionLabel.textProperty().bind(createStringBinding(() ->
-                        BSResources.get("Filter by amount in {0}", presentationModel.fiatCode.get()),
-                presentationModel.fiatCode));
-        volumeTextField.promptTextProperty().bind(createStringBinding(() ->
-                        BSResources.get("Amount in {0}", presentationModel.fiatCode.get()),
-                presentationModel.fiatCode));
 
         orderBookTable.getSortOrder().add(priceColumn);
         orderBookTable.setColumnResizePolicy(TableView.CONSTRAINED_RESIZE_POLICY);
 
-        amountTextField.setValidator(optionalBtcValidator);
+        setupBindings();
-        priceTextField.setValidator(optionalFiatValidator);
+        setupValidators();
-        volumeTextField.setValidator(optionalFiatValidator);
+        setupComparators();
 
         expand = ImageUtil.getIconImageView(ImageUtil.EXPAND);
         collapse = ImageUtil.getIconImageView(ImageUtil.COLLAPSE);
         showAdvancedSettingsButton.setGraphic(expand);
-    }
 
+        super.initialize(url, rb);
+    }
 
     @Override
     public void activate() {
         super.activate();
 
+        // setOrderBookInfo has been called before
         SortedList<OrderBookListItem> offerList = presentationModel.getOfferList();
         orderBookTable.setItems(offerList);
-        // presentationModel.comparator.bind(orderBookTable.comparatorProperty());
         offerList.comparatorProperty().bind(orderBookTable.comparatorProperty());
 
-        priceColumn.setComparator((o1, o2) -> o1.getOffer().getPrice().compareTo(o2.getOffer().getPrice()));
-        amountColumn.setComparator((o1, o2) -> o1.getOffer().getAmount().compareTo(o2.getOffer().getAmount()));
-        volumeColumn.setComparator((o1, o2) ->
-                o1.getOffer().getOfferVolume().compareTo(o2.getOffer().getOfferVolume()));
-        countryColumn.setComparator((o1, o2) -> o1.getOffer().getBankAccountCountry().getName().compareTo(o2.getOffer()
-                .getBankAccountCountry().getName()));
-        bankAccountTypeColumn.setComparator((o1, o2) -> o1.getOffer().getBankAccountType().compareTo(o2.getOffer()
-                .getBankAccountType()));
 
         priceColumn.setSortType((presentationModel.getOrderBookInfo().getDirection() == Direction.BUY) ?
                 TableColumn.SortType.ASCENDING : TableColumn.SortType.DESCENDING);
         orderBookTable.sort();
-
-        
-       /* if (orderBookTable.getItems() != null)
-            createOfferButton.setDefaultButton(orderBookTable.getItems().isEmpty());*/
     }
 
+    @SuppressWarnings("EmptyMethod")
     @Override
     public void deactivate() {
         super.deactivate();
 
-        //  orderBookTable.getSelectionModel().clearSelection();
-        // orderBookTable.setItems(null);
     }
 
     @SuppressWarnings("EmptyMethod")
@@ -219,10 +177,9 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
 
     public void setOrderBookInfo(OrderBookInfo orderBookInfo) {
         presentationModel.setOrderBookInfo(orderBookInfo);
-    }
+        tradeNavigationItem = (orderBookInfo.getDirection() == Direction.BUY) ? NavigationItem.BUY : NavigationItem
+                .SELL;
 
-    public void setNavigationListener(NavigationListener navigationListener) {
-        this.navigationListener = navigationListener;
     }
 
 
@@ -234,7 +191,11 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
     void createOffer() {
         if (presentationModel.isRegistered()) {
             createOfferButton.setDisable(true);
-            navigationListener.navigate(NavigationItem.CREATE_OFFER);
+            if (presentationModel.getOrderBookInfo().getDirection() == Direction.BUY)
+                navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.BUY, NavigationItem.CREATE_OFFER);
+            else
+                navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.SELL, NavigationItem.CREATE_OFFER);
+
         }
         else {
             openSetupScreen();
@@ -261,6 +222,7 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
     // Private methods
     ///////////////////////////////////////////////////////////////////////////////////////////
 
+
     private void openSetupScreen() {
         overlayManager.blurContent();
         List<Action> actions = new ArrayList<>();
@@ -269,7 +231,9 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
             public void handle(ActionEvent actionEvent) {
                 Dialog.Actions.OK.handle(actionEvent);
                 overlayManager.removeBlurContent();
-                navigationManager.navigationTo(NavigationItem.ACCOUNT, NavigationItem.ACCOUNT_SETUP);
+                navigationManager.setNavigationItemsForReturning(navigationManager.getCurrentNavigationItems());
+                navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.ACCOUNT,
+                        NavigationItem.ACCOUNT_SETUP);
             }
         });
         Popups.openInfo("You need to setup your trading account before you can trade.",
@@ -279,30 +243,13 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
     //TODO not updated yet
     private void takeOffer(Offer offer) {
         if (presentationModel.isRegistered()) {
-            //TODO Remove that when all UIs are converted to CodeBehind
-            TakeOfferController takeOfferController = null;
-            if (parent != null) {
-                if (parent instanceof ViewController)
-                    takeOfferController = (TakeOfferController) ((ViewController) parent)
-                            .loadViewAndGetChildController(NavigationItem
-                                    .TAKE_OFFER);
-                else if (parent instanceof ViewCB)
-                    takeOfferController = (TakeOfferController) ((ViewCB) parent)
-                            .loadView(NavigationItem
-                                    .TAKE_OFFER);
-            }
 
-            Coin requestedAmount;
+            presentationModel.getOrderBookInfo().setOffer(offer);
-            if (!"".equals(amountTextField.getText())) {
-                requestedAmount = BSFormatter.parseToCoin(amountTextField.getText());
-            }
-            else {
-                requestedAmount = offer.getAmount();
-            }
 
-            if (takeOfferController != null) {
+            if (presentationModel.getOrderBookInfo().getDirection() == Direction.BUY)
-                takeOfferController.initWithData(offer, requestedAmount);
+                navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.BUY, NavigationItem.TAKE_OFFER);
-            }
+            else
+                navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.SELL, NavigationItem.TAKE_OFFER);
         }
         else {
             openSetupScreen();
@@ -320,7 +267,7 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
                 actions);
 
         if (response == Dialog.Actions.YES)
-            navigationManager.navigationTo(NavigationItem.ACCOUNT, NavigationItem.ACCOUNT_SETTINGS,
+            navigationManager.navigationTo(NavigationItem.MAIN, NavigationItem.ACCOUNT, NavigationItem.ACCOUNT_SETTINGS,
                     NavigationItem.RESTRICTIONS);
         else
             orderBookTable.getSelectionModel().clearSelection();
@@ -364,9 +311,46 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
 
 
     ///////////////////////////////////////////////////////////////////////////////////////////
-    // Table
+    // Setup
     ///////////////////////////////////////////////////////////////////////////////////////////
 
+    private void setupBindings() {
+        amountTextField.textProperty().bindBidirectional(presentationModel.amount);
+        priceTextField.textProperty().bindBidirectional(presentationModel.price);
+        volumeTextField.textProperty().bindBidirectional(presentationModel.volume);
+        amountBtcLabel.textProperty().bind(presentationModel.btcCode);
+        priceFiatLabel.textProperty().bind(presentationModel.fiatCode);
+        volumeFiatLabel.textProperty().bind(presentationModel.fiatCode);
+        priceDescriptionLabel.textProperty().bind(presentationModel.fiatCode);
+        volumeDescriptionLabel.textProperty().bind(presentationModel.fiatCode);//Price per Bitcoin in EUR
+        priceDescriptionLabel.textProperty().bind(createStringBinding(() ->
+                        BSResources.get("Filter by price in {0}", presentationModel.fiatCode.get()),
+                presentationModel.fiatCode));
+        volumeDescriptionLabel.textProperty().bind(createStringBinding(() ->
+                        BSResources.get("Filter by amount in {0}", presentationModel.fiatCode.get()),
+                presentationModel.fiatCode));
+        volumeTextField.promptTextProperty().bind(createStringBinding(() ->
+                        BSResources.get("Amount in {0}", presentationModel.fiatCode.get()),
+                presentationModel.fiatCode));
+    }
+
+    private void setupValidators() {
+        amountTextField.setValidator(optionalBtcValidator);
+        priceTextField.setValidator(optionalFiatValidator);
+        volumeTextField.setValidator(optionalFiatValidator);
+    }
+
+    private void setupComparators() {
+        priceColumn.setComparator((o1, o2) -> o1.getOffer().getPrice().compareTo(o2.getOffer().getPrice()));
+        amountColumn.setComparator((o1, o2) -> o1.getOffer().getAmount().compareTo(o2.getOffer().getAmount()));
+        volumeColumn.setComparator((o1, o2) ->
+                o1.getOffer().getOfferVolume().compareTo(o2.getOffer().getOfferVolume()));
+        countryColumn.setComparator((o1, o2) -> o1.getOffer().getBankAccountCountry().getName().compareTo(o2.getOffer()
+                .getBankAccountCountry().getName()));
+        bankAccountTypeColumn.setComparator((o1, o2) -> o1.getOffer().getBankAccountType().compareTo(o2.getOffer()
+                .getBankAccountType()));
+    }
+
     private void setAmountColumnCellFactory() {
         amountColumn.setCellValueFactory((offer) -> new ReadOnlyObjectWrapper(offer.getValue()));
         amountColumn.setCellFactory(
@@ -479,7 +463,7 @@ public class OrderBookViewCB extends CachedViewCB<OrderBookPM> {
                                     Offer offer = item.getOffer();
 
                                     if (presentationModel.isMyOffer(offer)) {
-                                        icon = ImageUtil.getIconImage(ImageUtil.REMOVE);
+                                        icon = ImageUtil.getIconImage(ImageUtil.REMOVE_ICON);
                                         title = "Remove";
                                         button.setOnAction(event -> presentationModel.removeOffer(item
                                                 .getOffer()));

src/main/java/io/bitsquare/gui/main/trade/takeoffer/TakeOfferController.java

@@ -23,6 +23,7 @@ import io.bitsquare.btc.WalletFacade;
 import io.bitsquare.gui.CachedViewController;
 import io.bitsquare.gui.components.Popups;
 import io.bitsquare.gui.components.ValidatedTextField;
+import io.bitsquare.gui.main.trade.OrderBookInfo;
 import io.bitsquare.gui.main.trade.TradeViewCB;
 import io.bitsquare.gui.util.BSFormatter;
 import io.bitsquare.gui.util.BitSquareValidator;
@@ -108,9 +109,12 @@ public class TakeOfferController extends CachedViewController {
     // Public methods
     ///////////////////////////////////////////////////////////////////////////////////////////
 
-    public void initWithData(Offer offer, Coin requestedAmount) {
+    public void initWithData(OrderBookInfo orderBookInfo) {
-        this.offer = offer;
+        this.offer = orderBookInfo.getOffer();
-        this.requestedAmount = requestedAmount.compareTo(Coin.ZERO) == 0 ? offer.getAmount() : requestedAmount;
+        if (orderBookInfo.getAmount() != null && !orderBookInfo.getAmount().isZero())
+            requestedAmount = orderBookInfo.getAmount();
+        else
+            requestedAmount = offer.getAmount();
 
         if (amountTextField != null) {
             applyData();

src/main/java/io/bitsquare/gui/util/ImageUtil.java

@@ -34,10 +34,10 @@ public class ImageUtil {
 
     public static final String HOME = "/images/nav/home.png";
     public static final String HOME_ACTIVE = "/images/nav/home_active.png";
-    public static final String NAV_BUY = "/images/nav/buy.png";
+    public static final String BUY = "/images/nav/buy.png";
-    public static final String NAV_BUY_ACTIVE = "/images/nav/buy_active.png";
+    public static final String BUY_ACTIVE = "/images/nav/buy_active.png";
-    public static final String NAV_SELL = "/images/nav/sell.png";
+    public static final String SELL = "/images/nav/sell.png";
-    public static final String NAV_SELL_ACTIVE = "/images/nav/sell_active.png";
+    public static final String SELL_ACTIVE = "/images/nav/sell_active.png";
     public static final String ORDERS = "/images/nav/orders.png";
     public static final String ORDERS_ACTIVE = "/images/nav/orders_active.png";
     public static final String FUNDS = "/images/nav/funds.png";
@@ -51,9 +51,9 @@ public class ImageUtil {
 
     public static final String MSG_ALERT = "/images/nav/alertRound.png";
 
-    public static final String BUY = "/images/buy.png";
+    public static final String BUY_ICON = "/images/buy.png";
-    public static final String SELL = "/images/sell.png";
+    public static final String SELL_ICON = "/images/sell.png";
-    public static final String REMOVE = "/images/removeOffer.png";
+    public static final String REMOVE_ICON = "/images/removeOffer.png";
 
     public static final String EXPAND = "/images/expand.png";
     public static final String COLLAPSE = "/images/collapse.png";

src/main/java/io/bitsquare/locale/BSResources.java

@@ -48,7 +48,7 @@ public class BSResources {
         try {
             return BSResources.getResourceBundle().getString(key);
         } catch (MissingResourceException e) {
-            log.error("MissingResourceException for key: " + key);
+            log.warn("MissingResourceException for key: " + key);
             return key;
         }
     }

src/main/java/io/bitsquare/msg/MessageFacade.java

@@ -299,7 +299,7 @@ public class MessageFacade implements MessageBroker {
                                 listener.onOffersReceived(offers)));
                     }
 
-                    log.trace("Get offers from DHT was successful");
+                    //log.trace("Get offers from DHT was successful");
                     /* log.trace("Get offers from DHT was successful. Stored data: [key: " + locationKey
                             + ", values: " + futureGet.dataMap() + "]");*/
                 }