Add CheckBoxRenderer

Change-Id: I32d31d758ee3c313133c7b122bb3ea8dcfcc1cc3

1 files changed, 46 insertions, 0 deletions

diff --git a/server/src/main/java/com/vaadin/ui/renderers/CheckBoxRenderer.java b/server/src/main/java/com/vaadin/ui/renderers/CheckBoxRenderer.java
new file mode 100644
index 0000000000..92c52c1c0d
--- /dev/null
+++ b/server/src/main/java/com/vaadin/ui/renderers/CheckBoxRenderer.java
@@ -0,0 +1,46 @@
+/*
+ * 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.ui.renderers;
+
+import java.util.function.BiConsumer;
+import java.util.function.Function;
+
+/**
+ * A renderer that displays boolean valued grid columns as checkboxes.
+ *
+ * @since 8.0
+ * @author Vaadin Ltd
+ */
+public class CheckBoxRenderer<T> extends ClickableRenderer<T, Boolean> {
+
+    /**
+     * Creates a new checkbox renderer, given getter and setter functions.
+     * Getters and setters are used to update the object corresponding to a
+     * given row in the grid on the server side.
+     *
+     * @param getter
+     *            function for getting the desired boolean value
+     * @param setter
+     *            function for setting the boolean value after a change from the
+     *            client side
+     */
+    public CheckBoxRenderer(Function<T, Boolean> getter,
+            BiConsumer<T, Boolean> setter) {
+        super(Boolean.class, "");
+        addClickListener(clickEvent -> setter.accept(clickEvent.getItem(),
+                !getter.apply(clickEvent.getItem())));
+    }
+}