Add info popup for first time user at take offer screen

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

@@ -22,6 +22,7 @@ import io.bitsquare.btc.FeePolicy;
 import io.bitsquare.btc.WalletFacade;
 import io.bitsquare.btc.listeners.BalanceListener;
 import io.bitsquare.gui.UIModel;
+import io.bitsquare.persistence.Persistence;
 import io.bitsquare.settings.Settings;
 import io.bitsquare.trade.Offer;
 import io.bitsquare.trade.Trade;
@@ -56,6 +57,7 @@ class TakeOfferModel extends UIModel {
     private final TradeManager tradeManager;
     private final WalletFacade walletFacade;
     private final Settings settings;
+    private Persistence persistence;
 
     private Offer offer;
     private AddressEntry addressEntry;
@@ -81,10 +83,11 @@ class TakeOfferModel extends UIModel {
     ///////////////////////////////////////////////////////////////////////////////////////////
 
     @Inject
-    TakeOfferModel(TradeManager tradeManager, WalletFacade walletFacade, Settings settings) {
+    TakeOfferModel(TradeManager tradeManager, WalletFacade walletFacade, Settings settings, Persistence persistence) {
         this.tradeManager = tradeManager;
         this.walletFacade = walletFacade;
         this.settings = settings;
+        this.persistence = persistence;
     }
 
 
@@ -227,6 +230,13 @@ class TakeOfferModel extends UIModel {
         return true;
     }
 
+    Boolean displaySecurityDepositInfo() {
+        Object securityDepositInfoDisplayedObject = persistence.read("displaySecurityDepositInfo");
+        if (securityDepositInfoDisplayedObject instanceof Boolean)
+            return (Boolean) securityDepositInfoDisplayedObject;
+        else
+            return true;
+    }
 
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Setter

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

@@ -303,6 +303,10 @@ class TakeOfferPM extends PresentationModel<TakeOfferModel> {
         return paymentLabel;
     }
 
+    Boolean displaySecurityDepositInfo() {
+        return model.displaySecurityDepositInfo();
+    }
+    
 
     ///////////////////////////////////////////////////////////////////////////////////////////
     // Private

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

@@ -196,6 +196,23 @@ public class TakeOfferViewCB extends CachedViewCB<TakeOfferPM> {
 
     @FXML
     void onTakeOffer() {
+        if (presentationModel.displaySecurityDepositInfo()) {
+            overlayManager.blurContent();
+            List<Action> actions = new ArrayList<>();
+            actions.add(new AbstractAction(BSResources.get("shared.close")) {
+                @Override
+                public void handle(ActionEvent actionEvent) {
+                    Dialog.Actions.CLOSE.handle(actionEvent);
+                    overlayManager.removeBlurContent();
+                }
+            });
+            Popups.openInfo("To ensure that both traders behave fair they need to pay a security deposit.",
+                    "The deposit will stay in your local trading wallet until the offer gets accepted by " +
+                            "another trader. " +
+                            "\nIt will be refunded to you after the trade has successfully completed.",
+                    actions);
+        }
+        
         presentationModel.takeOffer();
     }