Implement focus handing in RadioButtonGroup and CheckboxGroup (#10440)

Fixes #10429

* implement focus handing in RadioButtonGroup, fixes #10429

* Merge branch 'master' of https://github.com/vaadin/framework into radiobuttongroup-focus

* merge

* Merge branch 'master' of https://github.com/vaadin/framework into radiobuttongroup-focus

* fix initial focus handling also on CheckBoxGroup and add tests

* add license headers

* Merge branch 'master' of https://github.com/vaadin/framework into radiobuttongroup-focus

* changed client to use lambdas and refactored focus testing to parent class

* made FocusTest abstract

* Merge branch 'master' of https://github.com/vaadin/framework into radiobuttongroup-focus

* don't allow focusing on disabled items & refactor focusing first item

2 files changed, 84 insertions, 0 deletions

diff --git a/uitest/src/main/java/com/vaadin/tests/components/checkboxgroup/CheckBoxGroupFocus.java b/uitest/src/main/java/com/vaadin/tests/components/checkboxgroup/CheckBoxGroupFocus.java
new file mode 100755
index 0000000000..7d845e96a4
--- /dev/null
+++ b/uitest/src/main/java/com/vaadin/tests/components/checkboxgroup/CheckBoxGroupFocus.java
@@ -0,0 +1,40 @@
+/*
+ * 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.checkboxgroup;
+
+import com.vaadin.annotations.Widgetset;
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.tests.components.AbstractTestUIWithLog;
+import com.vaadin.ui.Button;
+import com.vaadin.ui.CheckBoxGroup;
+
+@Widgetset("com.vaadin.DefaultWidgetSet")
+public class CheckBoxGroupFocus extends AbstractTestUIWithLog {
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        CheckBoxGroup<String> cbg = new CheckBoxGroup<>("CheckBoxes");
+        cbg.setItems("Test1", "Test2", "Test3");
+        cbg.select("Test2");
+        cbg.setItemCaptionGenerator(item -> "Option " + item);
+        cbg.focus();
+        CheckBoxGroup<String> cbg2 = new CheckBoxGroup<>("No selection");
+        cbg2.setItems("Foo1", "Foo2", "Foo3");
+        Button button = new Button("focus second group", e -> cbg2.focus());
+        addComponents(cbg, cbg2, button);
+    }
+
+}
diff --git a/uitest/src/main/java/com/vaadin/tests/components/radiobuttongroup/RadioButtonGroupFocus.java b/uitest/src/main/java/com/vaadin/tests/components/radiobuttongroup/RadioButtonGroupFocus.java
new file mode 100755
index 0000000000..4342a32860
--- /dev/null
+++ b/uitest/src/main/java/com/vaadin/tests/components/radiobuttongroup/RadioButtonGroupFocus.java
@@ -0,0 +1,44 @@
+/*
+ * 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.radiobuttongroup;
+
+import com.vaadin.annotations.Widgetset;
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.tests.components.AbstractTestUIWithLog;
+import com.vaadin.ui.Button;
+import com.vaadin.ui.RadioButtonGroup;
+
+/**
+ * @author Vaadin Ltd
+ *
+ */
+@Widgetset("com.vaadin.DefaultWidgetSet")
+public class RadioButtonGroupFocus extends AbstractTestUIWithLog {
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        RadioButtonGroup<String> rbg = new RadioButtonGroup<>("Radios");
+        rbg.setItems("Test1", "Test2", "Test3");
+        rbg.setSelectedItem("Test2");
+        rbg.setItemCaptionGenerator(item -> "Option " + item);
+        rbg.focus();
+        RadioButtonGroup<String> rbg2 = new RadioButtonGroup<>("No selection");
+        rbg2.setItems("Foo1", "Foo2", "Foo3");
+        Button button = new Button("focus second group", e -> rbg2.focus());
+        addComponents(rbg, rbg2, button);
+    }
+
+}