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authorDenis Anisimov <denis@vaadin.com>2016-09-19 16:26:32 +0300
committerDenis Anisimov <denis@vaadin.com>2016-11-24 11:03:23 +0300
commit159d413602380497b189e5cabbdd9ecf6431c725 (patch)
tree85de070c7dae0a8792eeafa70e7c17d38ad5fe7c /server/src/main/java/com/vaadin/ui/DeclarativeIconGenerator.java
parentfdc80972f55adc3bc2b987d40d3b4e628635f42f (diff)
downloadvaadin-framework-159d413602380497b189e5cabbdd9ecf6431c725.tar.gz
vaadin-framework-159d413602380497b189e5cabbdd9ecf6431c725.zip
Provide declarative support for listing components.
Fixes vaadin/framework8-issues#388 Change-Id: I4f8045bba51d308f4343a1f6d01b3f1ddca63e69
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+/*
+ * 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.util.HashMap;
+import java.util.Map;
+
+import com.vaadin.server.Resource;
+
+/**
+ * Icon generator class for declarative support.
+ * <p>
+ * Provides a straightforward mapping between an item and its icon.
+ *
+ * @param <T>
+ * item type
+ */
+class DeclarativeIconGenerator<T> implements IconGenerator<T> {
+
+ private Map<T, Resource> captions = new HashMap<>();
+
+ @Override
+ public Resource apply(T item) {
+ return captions.get(item);
+ }
+
+ /**
+ * Sets an {@code icon} for the {@code item}.
+ *
+ * @param item
+ * a data item
+ * @param icon
+ * an icon for the {@code item}
+ */
+ protected void setIcon(T item, Resource icon) {
+ captions.put(item, icon);
+ }
+
+}