Custom serializers accessors (#10658)

* add accessor methods for CUSTOM_SERIALIZERS in JsonCodec

* javadoc

* removed removeCustomSerializer method, renamed putCustomSerializer to addCustomSerializer, added sanity checks and JavaDocs

* refactored addCustomJsonSerializer to set, added test UI

* move enums to be parsed after custom serializers

* move adding custom serializer to static block

* throw an exception if multiple serializers are registered for class

* updated javadocs

* changed CustomJSONSerializerTest to a SingleBrowserTest

* moved CustomJSONSerializerTest to server/ and it's now not a browser test

* removed CustomJSONSerializerTest

1 files changed, 63 insertions, 0 deletions

diff --git a/uitest/src/main/java/com/vaadin/tests/application/CustomJSONSerializer.java b/uitest/src/main/java/com/vaadin/tests/application/CustomJSONSerializer.java
new file mode 100644
index 0000000000..9c8ca554d8
--- /dev/null
+++ b/uitest/src/main/java/com/vaadin/tests/application/CustomJSONSerializer.java
@@ -0,0 +1,63 @@
+package com.vaadin.tests.application;
+
+import java.lang.reflect.Type;
+
+import com.vaadin.server.JsonCodec;
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.server.communication.JSONSerializer;
+import com.vaadin.shared.communication.URLReference;
+import com.vaadin.tests.components.AbstractTestUI;
+import com.vaadin.ui.Button;
+import com.vaadin.ui.ConnectorTracker;
+import com.vaadin.ui.LoginForm;
+
+import elemental.json.Json;
+import elemental.json.JsonObject;
+import elemental.json.JsonValue;
+
+public class CustomJSONSerializer extends AbstractTestUI {
+
+    static {
+        JsonCodec.setCustomSerializer(URLReference.class,
+                new JSONSerializer<URLReference>() {
+
+                    @Override
+                    public URLReference deserialize(Type type,
+                            JsonValue jsonValue,
+                            ConnectorTracker connectorTracker) {
+                        // NOP
+                        return null;
+                    }
+
+                    @Override
+                    public JsonValue serialize(URLReference value,
+                            ConnectorTracker connectorTracker) {
+                        JsonObject result = Json.createObject();
+                        String url = value.getURL();
+                        // change all test.com urls to vaadin.com
+                        if ("http://www.test.com".equals(url)) {
+                            url = "http://www.vaadin.com";
+                        }
+                        result.put("uRL", url);
+                        return result;
+                    }
+
+                });
+    }
+
+    public static class MyLoginForm extends LoginForm {
+        public void setResource(URLReference ref) {
+            getState().loginResource = ref;
+        }
+    }
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        MyLoginForm loginForm = new MyLoginForm();
+        URLReference url = new URLReference();
+        url.setURL("http://www.test.com");
+        loginForm.setResource(url);
+        addComponent(loginForm);
+    }
+
+}