CashByMail show terms and conditions upon taking an offer

core/src/main/resources/i18n/displayStrings.properties

@@ -3419,6 +3419,13 @@ payment.f2f.city.prompt=The city will be displayed with the offer
 payment.shared.optionalExtra=Optional additional information
 payment.shared.extraInfo=Additional information
 payment.shared.extraInfo.prompt=Define any special terms, conditions, or details you would like to be displayed with your offers for this payment account (users will see this info before accepting offers).
+payment.cashByMail.extraInfo.prompt=Please state on your offers: \n\n\
+Country you are located (eg France); \n\
+Countries / regions you would accept trades from (eg France, EU, or any European country); \n\
+Any special terms/conditions; \n\
+Any other details.
+payment.cashByMail.tradingRestrictions=Please review the maker's terms and conditions.\n\
+  If you do not meet the requirements do not take this trade.
 payment.f2f.info='Face to Face' trades have different rules and come with different risks than online transactions.\n\n\
   The main differences are:\n\
   ● The trading peers need to exchange information about the meeting location and time by using their provided contact details.\n\

desktop/src/main/java/bisq/desktop/components/paymentmethods/CashByMailForm.java

@@ -96,7 +96,7 @@ public class CashByMailForm extends PaymentMethodForm {
         });
 
         TextArea extraTextArea = addTopLabelTextArea(gridPane, ++gridRow,
-                Res.get("payment.shared.optionalExtra"), Res.get("payment.shared.extraInfo.prompt")).second;
+                Res.get("payment.shared.optionalExtra"), Res.get("payment.cashByMail.extraInfo.prompt")).second;
         extraTextArea.setMinHeight(70);
         ((JFXTextArea) extraTextArea).setLabelFloat(false);
         extraTextArea.textProperty().addListener((ov, oldValue, newValue) -> {

desktop/src/main/java/bisq/desktop/main/offer/takeoffer/TakeOfferView.java

@@ -40,6 +40,7 @@ import bisq.desktop.main.offer.OfferView;
 import bisq.desktop.main.offer.OfferViewUtil;
 import bisq.desktop.main.overlays.notifications.Notification;
 import bisq.desktop.main.overlays.popups.Popup;
+import bisq.desktop.main.overlays.windows.GenericMessageWindow;
 import bisq.desktop.main.overlays.windows.OfferDetailsWindow;
 import bisq.desktop.main.overlays.windows.QRCodeWindow;
 import bisq.desktop.main.portfolio.PortfolioView;
@@ -161,7 +162,8 @@ public class TakeOfferView extends ActivatableViewAndModel<AnchorPane, TakeOffer
             isOfferAvailableSubscription;
 
     private int gridRow = 0;
-    private boolean offerDetailsWindowDisplayed, clearXchangeWarningDisplayed, fasterPaymentsWarningDisplayed, takeOfferFromUnsignedAccountWarningDisplayed;
+    private boolean offerDetailsWindowDisplayed, clearXchangeWarningDisplayed, fasterPaymentsWarningDisplayed,
+            takeOfferFromUnsignedAccountWarningDisplayed, cashByMailWarningDisplayed;
     private SimpleBooleanProperty errorPopupDisplayed;
     private ChangeListener<Boolean> amountFocusedListener, getShowWalletFundedNotificationListener;
 
@@ -307,6 +309,7 @@ public class TakeOfferView extends ActivatableViewAndModel<AnchorPane, TakeOffer
         maybeShowTakeOfferFromUnsignedAccountWarning(model.dataModel.getOffer());
         maybeShowClearXchangeWarning(lastPaymentAccount);
         maybeShowFasterPaymentsWarning(lastPaymentAccount);
+        maybeShowCashByMailWarning(lastPaymentAccount, model.dataModel.getOffer());
 
         if (!DevEnv.isDaoActivated() && !model.isRange()) {
             nextButton.setVisible(false);
@@ -1269,6 +1272,23 @@ public class TakeOfferView extends ActivatableViewAndModel<AnchorPane, TakeOffer
         }
     }
 
+    private void maybeShowCashByMailWarning(PaymentAccount paymentAccount, Offer offer) {
+        if (paymentAccount.getPaymentMethod().getId().equals(PaymentMethod.CASH_BY_MAIL_ID) &&
+                !cashByMailWarningDisplayed && !offer.getExtraInfo().isEmpty()) {
+            cashByMailWarningDisplayed = true;
+            UserThread.runAfter(() -> {
+                new GenericMessageWindow()
+                        .preamble(Res.get("payment.cashByMail.tradingRestrictions"))
+                        .instruction(offer.getExtraInfo())
+                        .actionButtonText(Res.get("shared.iConfirm"))
+                        .closeButtonText(Res.get("shared.close"))
+                        .width(Layout.INITIAL_WINDOW_WIDTH)
+                        .onClose(() -> close(false))
+                        .show();
+            }, 500, TimeUnit.MILLISECONDS);
+        }
+    }
+
     private Tuple2<Label, VBox> getTradeInputBox(HBox amountValueBox, String promptText) {
         Label descriptionLabel = new AutoTooltipLabel(promptText);
         descriptionLabel.setId("input-description-label");

desktop/src/main/java/bisq/desktop/main/overlays/windows/GenericMessageWindow.java

@@ -0,0 +1,64 @@
+/*
+ * This file is part of Bisq.
+ *
+ * Bisq 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.
+ *
+ * Bisq 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 Bisq. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package bisq.desktop.main.overlays.windows;
+
+import bisq.desktop.main.overlays.Overlay;
+import bisq.desktop.util.Layout;
+
+import javafx.scene.control.Label;
+import javafx.scene.control.TextArea;
+
+import static bisq.desktop.util.FormBuilder.addMultilineLabel;
+import static bisq.desktop.util.FormBuilder.addTextArea;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+public class GenericMessageWindow extends Overlay<GenericMessageWindow> {
+    private String preamble;
+
+    public GenericMessageWindow() {
+        super();
+    }
+
+    public void show() {
+        createGridPane();
+        addHeadLine();
+        addContent();
+        addButtons();
+        applyStyles();
+        display();
+    }
+
+    public GenericMessageWindow preamble(String preamble) {
+        this.preamble = preamble;
+        return this;
+    }
+
+    private void addContent() {
+        if (preamble != null) {
+            Label label = addMultilineLabel(gridPane, ++rowIndex, preamble, 10);
+            label.setPrefSize(Layout.INITIAL_WINDOW_WIDTH, Layout.INITIAL_WINDOW_HEIGHT * 0.1);
+        }
+        checkNotNull(message, "message must not be null");
+        TextArea textArea = addTextArea(gridPane, ++rowIndex, "", 10);
+        textArea.setText(message);
+        textArea.setEditable(false);
+        textArea.setWrapText(true);
+        // sizes the textArea to fit within its parent container
+        textArea.setPrefSize(Layout.INITIAL_WINDOW_WIDTH, Layout.INITIAL_WINDOW_HEIGHT * 0.9);
+    }
+}