Add documentation on GridDragger (#10328)

This pathc also switches GridDragger to by default not allow drops on rows when the
grid has been sorted.

1 files changed, 62 insertions, 0 deletions

diff --git a/uitest/src/main/java/com/vaadin/tests/components/grid/GridDraggerTwoGridsBothWays.java b/uitest/src/main/java/com/vaadin/tests/components/grid/GridDraggerTwoGridsBothWays.java
new file mode 100644
index 0000000000..f07ea77930
--- /dev/null
+++ b/uitest/src/main/java/com/vaadin/tests/components/grid/GridDraggerTwoGridsBothWays.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2000-2016 Vaadin Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.vaadin.tests.components.grid;
+
+import com.vaadin.annotations.Theme;
+import com.vaadin.annotations.Widgetset;
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.shared.ui.dnd.DropEffect;
+import com.vaadin.tests.util.Person;
+import com.vaadin.ui.Grid;
+import com.vaadin.ui.HorizontalLayout;
+import com.vaadin.ui.Layout;
+import com.vaadin.ui.components.grid.GridDragger;
+
+@Theme("valo")
+@Widgetset("com.vaadin.DefaultWidgetSet")
+public class GridDraggerTwoGridsBothWays extends AbstractGridDnD {
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        getUI().setMobileHtml5DndEnabled(true);
+
+        Grid<Person> left = createGridAndFillWithData(25);
+        Grid<Person> right = createGridAndFillWithData(25);
+
+        GridDragger<Person> leftToRight = new GridDragger<>(left, right);
+        GridDragger<Person> rightToLeft = new GridDragger<>(right, left);
+
+        leftToRight.getGridDragSource()
+                .addDragStartListener(event -> rightToLeft.getGridDropTarget()
+                        .setDropEffect(DropEffect.NONE));
+        leftToRight.getGridDragSource().addDragEndListener(
+                event -> rightToLeft.getGridDropTarget().setDropEffect(null));
+
+        rightToLeft.getGridDragSource()
+                .addDragStartListener(event -> leftToRight.getGridDropTarget()
+                        .setDropEffect(DropEffect.NONE));
+        rightToLeft.getGridDragSource().addDragEndListener(
+                event -> leftToRight.getGridDropTarget().setDropEffect(null));
+
+        Layout layout = new HorizontalLayout();
+
+        layout.addComponent(left);
+        layout.addComponent(right);
+        layout.setWidth("100%");
+        addComponent(layout);
+    }
+
+}