Add setters to Payload for JsonCodec to be able to encode

Fixes #10428

1 files changed, 55 insertions, 0 deletions

diff --git a/uitest/src/main/java/com/vaadin/tests/dnd/DragAndDropPayload.java b/uitest/src/main/java/com/vaadin/tests/dnd/DragAndDropPayload.java
new file mode 100644
index 0000000000..050317358e
--- /dev/null
+++ b/uitest/src/main/java/com/vaadin/tests/dnd/DragAndDropPayload.java
@@ -0,0 +1,55 @@
+package com.vaadin.tests.dnd;
+
+import com.vaadin.annotations.Widgetset;
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.shared.ui.dnd.criteria.Payload;
+import com.vaadin.tests.components.AbstractTestUIWithLog;
+import com.vaadin.ui.HorizontalLayout;
+import com.vaadin.ui.Label;
+import com.vaadin.ui.VerticalLayout;
+import com.vaadin.ui.dnd.DragSourceExtension;
+import com.vaadin.ui.dnd.DropTargetExtension;
+
+@Widgetset("com.vaadin.DefaultWidgetSet")
+public class DragAndDropPayload extends AbstractTestUIWithLog {
+
+    private final Label stringLabel = new Label(
+            "Drag source with string payload");
+    private final Label integerLabel = new Label(
+            "Drag source with integer payload");
+    private final Label doubleLabel = new Label(
+            "Drag source with double payload");
+
+    private final Label targetLabel = new Label("Drop target");
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        DragSourceExtension<Label> stringDragSource = new DragSourceExtension<>(
+                stringLabel);
+        stringDragSource.setPayload("payload_key", "string_value");
+
+        DragSourceExtension<Label> integerDragSource = new DragSourceExtension<>(
+                integerLabel);
+        integerDragSource.setPayload("payload_key", 42);
+
+        DragSourceExtension<Label> doubleDragSource = new DragSourceExtension<>(
+                doubleLabel);
+        doubleDragSource.setPayload("payload_key", 3.14);
+
+        DropTargetExtension<Label> dropTarget = new DropTargetExtension<>(
+                targetLabel);
+        dropTarget.addDropListener(event ->
+                event.getDataTransferData().entrySet().stream()
+                        .filter(entry -> entry.getKey()
+                                .startsWith(Payload.ITEM_PREFIX)).forEach(
+                        entry -> log.log(entry.getKey() + " -> " + entry
+                                .getValue()))
+        );
+
+        VerticalLayout dragSources = new VerticalLayout(stringLabel,
+                integerLabel, doubleLabel);
+        VerticalLayout dropTargets = new VerticalLayout(targetLabel);
+        getLayout()
+                .addComponent(new HorizontalLayout(dragSources, dropTargets));
+    }
+}