Remove Extension suffix from Grid DND classes (#9035)

15 files changed, 62 insertions, 59 deletions

diff --git a/client/src/main/java/com/vaadin/client/connectors/grid/GridDragSourceExtensionConnector.java b/client/src/main/java/com/vaadin/client/connectors/grid/GridDragSourceConnector.java
index 40eb80621c..74f9f14d4f 100644
--- a/client/src/main/java/com/vaadin/client/connectors/grid/GridDragSourceExtensionConnector.java
+++ b/client/src/main/java/com/vaadin/client/connectors/grid/GridDragSourceConnector.java
@@ -29,10 +29,10 @@ import com.vaadin.client.widgets.Grid;
 import com.vaadin.shared.Range;
 import com.vaadin.shared.ui.Connect;
 import com.vaadin.shared.ui.dnd.DropEffect;
-import com.vaadin.shared.ui.grid.GridDragSourceExtensionRpc;
-import com.vaadin.shared.ui.grid.GridDragSourceExtensionState;
+import com.vaadin.shared.ui.grid.GridDragSourceRpc;
+import com.vaadin.shared.ui.grid.GridDragSourceState;
 import com.vaadin.shared.ui.grid.GridState;
-import com.vaadin.ui.GridDragSourceExtension;
+import com.vaadin.ui.GridDragSource;
 
 import elemental.events.Event;
 import elemental.json.Json;
@@ -41,14 +41,13 @@ import elemental.json.JsonObject;
 
 /**
  * Adds HTML5 drag and drop functionality to a {@link com.vaadin.client.widgets.Grid
- * Grid}'s rows. This is the client side counterpart of {@link
- * GridDragSourceExtension}.
+ * Grid}'s rows. This is the client side counterpart of {@link GridDragSource}.
  *
  * @author Vaadin Ltd
  * @since
  */
-@Connect(GridDragSourceExtension.class)
-public class GridDragSourceExtensionConnector extends
+@Connect(GridDragSource.class)
+public class GridDragSourceConnector extends
         DragSourceExtensionConnector {
 
     private GridConnector gridConnector;
@@ -93,8 +92,7 @@ public class GridDragSourceExtensionConnector extends
     protected void sendDragStartEventToServer(Event dragStartEvent) {
 
         // Start server RPC with dragged item keys
-        getRpcProxy(GridDragSourceExtensionRpc.class)
-                .dragStart(draggedItemKeys);
+        getRpcProxy(GridDragSourceRpc.class).dragStart(draggedItemKeys);
     }
 
     private List<JsonObject> getDraggedRows(Event dragStartEvent) {
@@ -130,7 +128,7 @@ public class GridDragSourceExtensionConnector extends
             DropEffect dropEffect) {
 
         // Send server RPC with dragged item keys
-        getRpcProxy(GridDragSourceExtensionRpc.class)
+        getRpcProxy(GridDragSourceRpc.class)
                 .dragEnd(dropEffect, draggedItemKeys);
     }
 
@@ -204,9 +202,8 @@ public class GridDragSourceExtensionConnector extends
      * @return Drag data if present or row data otherwise.
      */
     private JsonObject getDragData(JsonObject row) {
-        return row.hasKey(GridDragSourceExtensionState.JSONKEY_DRAG_DATA)
-                ? row.getObject(GridDragSourceExtensionState.JSONKEY_DRAG_DATA)
-                : row;
+        return row.hasKey(GridDragSourceState.JSONKEY_DRAG_DATA)
+                ? row.getObject(GridDragSourceState.JSONKEY_DRAG_DATA) : row;
     }
 
     @Override
@@ -239,7 +236,7 @@ public class GridDragSourceExtensionConnector extends
     }
 
     @Override
-    public GridDragSourceExtensionState getState() {
-        return (GridDragSourceExtensionState) super.getState();
+    public GridDragSourceState getState() {
+        return (GridDragSourceState) super.getState();
     }
 }
diff --git a/client/src/main/java/com/vaadin/client/connectors/grid/GridDropTargetExtensionConnector.java b/client/src/main/java/com/vaadin/client/connectors/grid/GridDropTargetConnector.java
index dacc8316ad..34a2c6750f 100644
--- a/client/src/main/java/com/vaadin/client/connectors/grid/GridDropTargetExtensionConnector.java
+++ b/client/src/main/java/com/vaadin/client/connectors/grid/GridDropTargetConnector.java
@@ -30,23 +30,23 @@ import com.vaadin.client.widgets.Escalator;
 import com.vaadin.shared.ui.Connect;
 import com.vaadin.shared.ui.grid.DropLocation;
 import com.vaadin.shared.ui.grid.DropMode;
-import com.vaadin.shared.ui.grid.GridDropTargetExtensionRpc;
-import com.vaadin.shared.ui.grid.GridDropTargetExtensionState;
+import com.vaadin.shared.ui.grid.GridDropTargetRpc;
+import com.vaadin.shared.ui.grid.GridDropTargetState;
 import com.vaadin.shared.ui.grid.GridState;
-import com.vaadin.ui.GridDropTargetExtension;
+import com.vaadin.ui.GridDropTarget;
 
 import elemental.events.Event;
 import elemental.json.JsonObject;
 
 /**
  * Makes Grid an HTML5 drop target. This is the client side counterpart of
- * {@link GridDropTargetExtension}.
+ * {@link GridDropTarget}.
  *
  * @author Vaadin Ltd
  * @since
  */
-@Connect(GridDropTargetExtension.class)
-public class GridDropTargetExtensionConnector extends
+@Connect(GridDropTarget.class)
+public class GridDropTargetConnector extends
         DropTargetExtensionConnector {
 
     // Drag over class name suffixes
@@ -89,7 +89,7 @@ public class GridDropTargetExtensionConnector extends
                     (NativeEvent) dropEvent);
         }
 
-        getRpcProxy(GridDropTargetExtensionRpc.class)
+        getRpcProxy(GridDropTargetRpc.class)
                 .drop(dataTransferText, rowKey, dropLocation);
     }
 
@@ -190,7 +190,7 @@ public class GridDropTargetExtensionConnector extends
     }
 
     @Override
-    public GridDropTargetExtensionState getState() {
-        return (GridDropTargetExtensionState) super.getState();
+    public GridDropTargetState getState() {
+        return (GridDropTargetState) super.getState();
     }
 }
diff --git a/server/src/main/java/com/vaadin/event/dnd/grid/GridDragEndEvent.java b/server/src/main/java/com/vaadin/event/dnd/grid/GridDragEndEvent.java
index 8b4ceb1d4f..e58196e6b7 100644
--- a/server/src/main/java/com/vaadin/event/dnd/grid/GridDragEndEvent.java
+++ b/server/src/main/java/com/vaadin/event/dnd/grid/GridDragEndEvent.java
@@ -20,6 +20,7 @@ import java.util.Set;
 import com.vaadin.event.dnd.DragEndEvent;
 import com.vaadin.shared.ui.dnd.DropEffect;
 import com.vaadin.ui.Grid;
+import com.vaadin.ui.GridDragSource;
 
 /**
  * Drop event on an HTML5 drop target {@link Grid} row.
@@ -27,7 +28,7 @@ import com.vaadin.ui.Grid;
  * @param <T>
  *         The Grid bean type.
  * @author Vaadin Ltd.
- * @see com.vaadin.ui.GridDragSourceExtension#addGridDragStartListener(GridDragStartListener)
+ * @see GridDragSource#addGridDragStartListener(GridDragStartListener)
  * @since
  */
 public class GridDragEndEvent<T> extends DragEndEvent<Grid<T>> {
diff --git a/server/src/main/java/com/vaadin/event/dnd/grid/GridDragEndListener.java b/server/src/main/java/com/vaadin/event/dnd/grid/GridDragEndListener.java
index ad338e68db..c47a8f037f 100644
--- a/server/src/main/java/com/vaadin/event/dnd/grid/GridDragEndListener.java
+++ b/server/src/main/java/com/vaadin/event/dnd/grid/GridDragEndListener.java
@@ -18,6 +18,7 @@ package com.vaadin.event.dnd.grid;
 import java.lang.reflect.Method;
 
 import com.vaadin.event.ConnectorEventListener;
+import com.vaadin.ui.GridDragSource;
 
 /**
  * Drop listener for HTML5 drop on a Grid row.
@@ -25,7 +26,7 @@ import com.vaadin.event.ConnectorEventListener;
  * @param <T>
  *         The Grid bean type.
  * @author Vaadin Ltd.
- * @see com.vaadin.ui.GridDragSourceExtension#addGridDragEndListener(GridDragEndListener)
+ * @see GridDragSource#addGridDragEndListener(GridDragEndListener)
  * @since
  */
 @FunctionalInterface
diff --git a/server/src/main/java/com/vaadin/event/dnd/grid/GridDragStartEvent.java b/server/src/main/java/com/vaadin/event/dnd/grid/GridDragStartEvent.java
index 50130043da..ac87c296cf 100644
--- a/server/src/main/java/com/vaadin/event/dnd/grid/GridDragStartEvent.java
+++ b/server/src/main/java/com/vaadin/event/dnd/grid/GridDragStartEvent.java
@@ -20,6 +20,7 @@ import java.util.Set;
 import com.vaadin.event.dnd.DragStartEvent;
 import com.vaadin.shared.ui.dnd.EffectAllowed;
 import com.vaadin.ui.Grid;
+import com.vaadin.ui.GridDragSource;
 
 /**
  * Drag start event on an HTML5 drag source {@link Grid} row.
@@ -27,7 +28,7 @@ import com.vaadin.ui.Grid;
  * @param <T>
  *         The Grid bean type.
  * @author Vaadin Ltd.
- * @see com.vaadin.ui.GridDragSourceExtension#addGridDragStartListener(GridDragStartListener)
+ * @see GridDragSource#addGridDragStartListener(GridDragStartListener)
  * @since
  */
 public class GridDragStartEvent<T> extends DragStartEvent<Grid<T>> {
diff --git a/server/src/main/java/com/vaadin/event/dnd/grid/GridDragStartListener.java b/server/src/main/java/com/vaadin/event/dnd/grid/GridDragStartListener.java
index f7dc06b0fe..4ef1f7f205 100644
--- a/server/src/main/java/com/vaadin/event/dnd/grid/GridDragStartListener.java
+++ b/server/src/main/java/com/vaadin/event/dnd/grid/GridDragStartListener.java
@@ -18,6 +18,7 @@ package com.vaadin.event.dnd.grid;
 import java.lang.reflect.Method;
 
 import com.vaadin.event.ConnectorEventListener;
+import com.vaadin.ui.GridDragSource;
 
 /**
  * Drag start listener for HTML5 drag start on a Grid row.
@@ -25,7 +26,7 @@ import com.vaadin.event.ConnectorEventListener;
  * @param <T>
  *         The Grid bean type.
  * @author Vaadin Ltd.
- * @see com.vaadin.ui.GridDragSourceExtension#addGridDragStartListener(GridDragStartListener)
+ * @see GridDragSource#addGridDragStartListener(GridDragStartListener)
  * @since
  */
 @FunctionalInterface
diff --git a/server/src/main/java/com/vaadin/event/dnd/grid/GridDropEvent.java b/server/src/main/java/com/vaadin/event/dnd/grid/GridDropEvent.java
index 98d1b3495b..41998354d1 100644
--- a/server/src/main/java/com/vaadin/event/dnd/grid/GridDropEvent.java
+++ b/server/src/main/java/com/vaadin/event/dnd/grid/GridDropEvent.java
@@ -20,6 +20,7 @@ import com.vaadin.event.dnd.DropEvent;
 import com.vaadin.shared.ui.grid.DropLocation;
 import com.vaadin.ui.AbstractComponent;
 import com.vaadin.ui.Grid;
+import com.vaadin.ui.GridDropTarget;
 
 /**
  * Drop event on an HTML5 drop target {@link Grid} row.
@@ -27,7 +28,7 @@ import com.vaadin.ui.Grid;
  * @param <T>
  *         The Grid bean type.
  * @author Vaadin Ltd.
- * @see com.vaadin.ui.GridDropTargetExtension#addGridDropListener(GridDropListener)
+ * @see GridDropTarget#addGridDropListener(GridDropListener)
  * @since
  */
 public class GridDropEvent<T> extends DropEvent<Grid<T>> {
diff --git a/server/src/main/java/com/vaadin/event/dnd/grid/GridDropListener.java b/server/src/main/java/com/vaadin/event/dnd/grid/GridDropListener.java
index 1c148eb28d..bd4ed8e2fc 100644
--- a/server/src/main/java/com/vaadin/event/dnd/grid/GridDropListener.java
+++ b/server/src/main/java/com/vaadin/event/dnd/grid/GridDropListener.java
@@ -18,6 +18,7 @@ package com.vaadin.event.dnd.grid;
 import java.lang.reflect.Method;
 
 import com.vaadin.event.ConnectorEventListener;
+import com.vaadin.ui.GridDropTarget;
 
 /**
  * Drop listener for HTML5 drop on a Grid row.
@@ -25,7 +26,7 @@ import com.vaadin.event.ConnectorEventListener;
  * @param <T>
  *         The Grid bean type.
  * @author Vaadin Ltd.
- * @see com.vaadin.ui.GridDropTargetExtension#addGridDropListener(GridDropListener)
+ * @see GridDropTarget#addGridDropListener(GridDropListener)
  * @since
  */
 @FunctionalInterface
diff --git a/server/src/main/java/com/vaadin/ui/GridDragSourceExtension.java b/server/src/main/java/com/vaadin/ui/GridDragSource.java
index ca6e1b05fd..0cfd9964e2 100644
--- a/server/src/main/java/com/vaadin/ui/GridDragSourceExtension.java
+++ b/server/src/main/java/com/vaadin/ui/GridDragSource.java
@@ -30,8 +30,8 @@ import com.vaadin.server.SerializableFunction;
 import com.vaadin.shared.Registration;
 import com.vaadin.shared.ui.dnd.DragSourceState;
 import com.vaadin.shared.ui.dnd.DropEffect;
-import com.vaadin.shared.ui.grid.GridDragSourceExtensionRpc;
-import com.vaadin.shared.ui.grid.GridDragSourceExtensionState;
+import com.vaadin.shared.ui.grid.GridDragSourceRpc;
+import com.vaadin.shared.ui.grid.GridDragSourceState;
 
 import elemental.json.JsonObject;
 
@@ -46,7 +46,7 @@ import elemental.json.JsonObject;
  * @author Vaadin Ltd.
  * @since
  */
-public class GridDragSourceExtension<T> extends DragSourceExtension<Grid<T>> {
+public class GridDragSource<T> extends DragSourceExtension<Grid<T>> {
 
     /**
      * Drag data generator that appends drag data to each row.
@@ -64,7 +64,7 @@ public class GridDragSourceExtension<T> extends DragSourceExtension<Grid<T>> {
      * @param target
      *         Grid to be extended.
      */
-    public GridDragSourceExtension(Grid<T> target) {
+    public GridDragSource(Grid<T> target) {
         super(target);
 
         // Create drag data generator
@@ -76,7 +76,7 @@ public class GridDragSourceExtension<T> extends DragSourceExtension<Grid<T>> {
 
     @Override
     protected void registerDragSourceRpc(Grid<T> target) {
-        registerRpc(new GridDragSourceExtensionRpc() {
+        registerRpc(new GridDragSourceRpc() {
             @Override
             public void dragStart(List<String> draggedItemKeys) {
 
@@ -124,7 +124,7 @@ public class GridDragSourceExtension<T> extends DragSourceExtension<Grid<T>> {
      */
     private void generateDragData(T item, JsonObject jsonObject) {
         Optional.ofNullable(generatorFunction).ifPresent(generator -> jsonObject
-                .put(GridDragSourceExtensionState.JSONKEY_DRAG_DATA,
+                .put(GridDragSourceState.JSONKEY_DRAG_DATA,
                         generator.apply(item)));
     }
 
@@ -204,12 +204,12 @@ public class GridDragSourceExtension<T> extends DragSourceExtension<Grid<T>> {
     }
 
     @Override
-    protected GridDragSourceExtensionState getState() {
-        return (GridDragSourceExtensionState) super.getState();
+    protected GridDragSourceState getState() {
+        return (GridDragSourceState) super.getState();
     }
 
     @Override
-    protected GridDragSourceExtensionState getState(boolean markAsDirty) {
-        return (GridDragSourceExtensionState) super.getState(markAsDirty);
+    protected GridDragSourceState getState(boolean markAsDirty) {
+        return (GridDragSourceState) super.getState(markAsDirty);
     }
 }
diff --git a/server/src/main/java/com/vaadin/ui/GridDropTargetExtension.java b/server/src/main/java/com/vaadin/ui/GridDropTarget.java
index 17633fa5ce..0cd51d8634 100644
--- a/server/src/main/java/com/vaadin/ui/GridDropTargetExtension.java
+++ b/server/src/main/java/com/vaadin/ui/GridDropTarget.java
@@ -20,8 +20,8 @@ import com.vaadin.event.dnd.grid.GridDropEvent;
 import com.vaadin.event.dnd.grid.GridDropListener;
 import com.vaadin.shared.Registration;
 import com.vaadin.shared.ui.grid.DropMode;
-import com.vaadin.shared.ui.grid.GridDropTargetExtensionRpc;
-import com.vaadin.shared.ui.grid.GridDropTargetExtensionState;
+import com.vaadin.shared.ui.grid.GridDropTargetRpc;
+import com.vaadin.shared.ui.grid.GridDropTargetState;
 
 /**
  * Makes the rows of a Grid HTML5 drop targets. This is the server side
@@ -32,7 +32,7 @@ import com.vaadin.shared.ui.grid.GridDropTargetExtensionState;
  * @author Vaadin Ltd
  * @since
  */
-public class GridDropTargetExtension<T> extends DropTargetExtension<Grid<T>> {
+public class GridDropTarget<T> extends DropTargetExtension<Grid<T>> {
 
     /**
      * Extends a Grid and makes it's rows drop targets for HTML5 drag and drop.
@@ -44,7 +44,7 @@ public class GridDropTargetExtension<T> extends DropTargetExtension<Grid<T>> {
      *         Grid's row.
      * @see GridDropEvent#getDropLocation()
      */
-    public GridDropTargetExtension(Grid<T> target, DropMode dropMode) {
+    public GridDropTarget(Grid<T> target, DropMode dropMode) {
         super(target);
 
         setDropMode(dropMode);
@@ -93,7 +93,7 @@ public class GridDropTargetExtension<T> extends DropTargetExtension<Grid<T>> {
     @Override
     protected void registerDropTargetRpc(Grid<T> target) {
         registerRpc(
-                (GridDropTargetExtensionRpc) (dataTransferText, rowKey, dropLocation) -> {
+                (GridDropTargetRpc) (dataTransferText, rowKey, dropLocation) -> {
 
                     T dropTargetRow = target.getDataCommunicator()
                             .getKeyMapper().get(rowKey);
@@ -107,12 +107,12 @@ public class GridDropTargetExtension<T> extends DropTargetExtension<Grid<T>> {
     }
 
     @Override
-    protected GridDropTargetExtensionState getState() {
-        return (GridDropTargetExtensionState) super.getState();
+    protected GridDropTargetState getState() {
+        return (GridDropTargetState) super.getState();
     }
 
     @Override
-    protected GridDropTargetExtensionState getState(boolean markAsDirty) {
-        return (GridDropTargetExtensionState) super.getState(markAsDirty);
+    protected GridDropTargetState getState(boolean markAsDirty) {
+        return (GridDropTargetState) super.getState(markAsDirty);
     }
 }
diff --git a/shared/src/main/java/com/vaadin/shared/ui/grid/GridDragSourceExtensionRpc.java b/shared/src/main/java/com/vaadin/shared/ui/grid/GridDragSourceRpc.java
index c0e24fe847..066e193157 100644
--- a/shared/src/main/java/com/vaadin/shared/ui/grid/GridDragSourceExtensionRpc.java
+++ b/shared/src/main/java/com/vaadin/shared/ui/grid/GridDragSourceRpc.java
@@ -27,7 +27,7 @@ import com.vaadin.shared.ui.dnd.DropEffect;
  * @author Vaadin Ltd.
  * @since
  */
-public interface GridDragSourceExtensionRpc extends ServerRpc {
+public interface GridDragSourceRpc extends ServerRpc {
 
     /**
      * Called when dragstart event happens on client side.
diff --git a/shared/src/main/java/com/vaadin/shared/ui/grid/GridDragSourceExtensionState.java b/shared/src/main/java/com/vaadin/shared/ui/grid/GridDragSourceState.java
index 682863ab88..3d020043fe 100644
--- a/shared/src/main/java/com/vaadin/shared/ui/grid/GridDragSourceExtensionState.java
+++ b/shared/src/main/java/com/vaadin/shared/ui/grid/GridDragSourceState.java
@@ -18,12 +18,12 @@ package com.vaadin.shared.ui.grid;
 import com.vaadin.shared.ui.dnd.DragSourceState;
 
 /**
- * State class containing parameters for GridDragSourceExtension.
+ * State class containing parameters for GridDragSource.
  *
  * @author Vaadin Ltd
  * @since
  */
-public class GridDragSourceExtensionState extends DragSourceState {
+public class GridDragSourceState extends DragSourceState {
 
     /**
      * Json key for storing data for a dragged row.
diff --git a/shared/src/main/java/com/vaadin/shared/ui/grid/GridDropTargetExtensionRpc.java b/shared/src/main/java/com/vaadin/shared/ui/grid/GridDropTargetRpc.java
index 212081d486..84bb6ed890 100644
--- a/shared/src/main/java/com/vaadin/shared/ui/grid/GridDropTargetExtensionRpc.java
+++ b/shared/src/main/java/com/vaadin/shared/ui/grid/GridDropTargetRpc.java
@@ -24,7 +24,7 @@ import com.vaadin.shared.communication.ServerRpc;
  * @author Vaadin Ltd.
  * @since
  */
-public interface GridDropTargetExtensionRpc extends ServerRpc {
+public interface GridDropTargetRpc extends ServerRpc {
 
     /**
      * Called when drop event happens on client side.
diff --git a/shared/src/main/java/com/vaadin/shared/ui/grid/GridDropTargetExtensionState.java b/shared/src/main/java/com/vaadin/shared/ui/grid/GridDropTargetState.java
index 50b50a5d24..aae051b299 100644
--- a/shared/src/main/java/com/vaadin/shared/ui/grid/GridDropTargetExtensionState.java
+++ b/shared/src/main/java/com/vaadin/shared/ui/grid/GridDropTargetState.java
@@ -18,12 +18,12 @@ package com.vaadin.shared.ui.grid;
 import com.vaadin.shared.ui.dnd.DropTargetState;
 
 /**
- * State class containing parameters for GridDropTargetExtension.
+ * State class containing parameters for GridDropTarget.
  *
  * @author Vaadin Ltd
  * @since
  */
-public class GridDropTargetExtensionState extends DropTargetState {
+public class GridDropTargetState extends DropTargetState {
 
     /**
      * Stores the drop mode of the drop target Grid.
diff --git a/uitest/src/main/java/com/vaadin/tests/components/grid/GridDragAndDrop.java b/uitest/src/main/java/com/vaadin/tests/components/grid/GridDragAndDrop.java
index 9c89177167..8fed8eabca 100644
--- a/uitest/src/main/java/com/vaadin/tests/components/grid/GridDragAndDrop.java
+++ b/uitest/src/main/java/com/vaadin/tests/components/grid/GridDragAndDrop.java
@@ -25,8 +25,8 @@ import com.vaadin.server.VaadinRequest;
 import com.vaadin.shared.ui.grid.DropMode;
 import com.vaadin.tests.components.AbstractTestUIWithLog;
 import com.vaadin.ui.Grid;
-import com.vaadin.ui.GridDragSourceExtension;
-import com.vaadin.ui.GridDropTargetExtension;
+import com.vaadin.ui.GridDragSource;
+import com.vaadin.ui.GridDropTarget;
 import com.vaadin.ui.HorizontalLayout;
 import com.vaadin.ui.Layout;
 import com.vaadin.ui.RadioButtonGroup;
@@ -44,7 +44,7 @@ public class GridDragAndDrop extends AbstractTestUIWithLog {
         dragSourceComponent.addColumn(Bean::getId).setCaption("ID");
         dragSourceComponent.addColumn(Bean::getValue).setCaption("Value");
 
-        GridDragSourceExtension<Bean> dragSource = new GridDragSourceExtension<>(
+        GridDragSource<Bean> dragSource = new GridDragSource<>(
                 dragSourceComponent);
         dragSource.setDragDataGenerator(bean -> {
             JsonObject ret = Json.createObject();
@@ -59,7 +59,7 @@ public class GridDragAndDrop extends AbstractTestUIWithLog {
         dropTargetComponent.addColumn(Bean::getId).setCaption("ID");
         dropTargetComponent.addColumn(Bean::getValue).setCaption("Value");
 
-        GridDropTargetExtension<Bean> dropTarget = new GridDropTargetExtension<>(
+        GridDropTarget<Bean> dropTarget = new GridDropTarget<>(
                 dropTargetComponent, DropMode.ON_TOP);
         dropTarget.addGridDropListener(event -> {
             log(event.getDataTransferText() + ", targetId=" + event