Move ItemIconProvider out of ComboBox, rename to IconGenerator

Change-Id: I884a52c75b3be5573cf6634f211d72d09de69d80

1 files changed, 41 insertions, 0 deletions

diff --git a/server/src/main/java/com/vaadin/ui/IconGenerator.java b/server/src/main/java/com/vaadin/ui/IconGenerator.java
new file mode 100644
index 0000000000..41f11dad81
--- /dev/null
+++ b/server/src/main/java/com/vaadin/ui/IconGenerator.java
@@ -0,0 +1,41 @@
+/*
+ * 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;
+
+import java.io.Serializable;
+import java.util.function.Function;
+
+import com.vaadin.server.Resource;
+
+/**
+ * A callback interface for generating icons for an item.
+ *
+ * @param <T>
+ *            item type for which the icon is generated
+ */
+@FunctionalInterface
+public interface IconGenerator<T> extends Function<T, Resource>, Serializable {
+
+    /**
+     * Gets an icon resource for the {@code item}.
+     *
+     * @param item
+     *            the item for which to generate an icon for
+     * @return the generated icon resource
+     */
+    @Override
+    public Resource apply(T item);
+}
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