12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152 |
- /*
- * Copyright 2000-2018 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.IdentityHashMap;
- import java.util.Map;
-
- import com.vaadin.data.ValueProvider;
-
- /**
- * Value provider class for declarative support.
- * <p>
- * Provides a straightforward mapping between an item and its value.
- *
- * @param <T>
- * item type
- */
- class DeclarativeValueProvider<T> implements ValueProvider<T, String> {
-
- private final Map<T, String> values = new IdentityHashMap<>();
-
- @Override
- public String apply(T t) {
- return values.get(t);
- }
-
- /**
- * Sets a {@code value} for the item {@code t}.
- *
- * @param t
- * a data item
- * @param value
- * a value for the item {@code t}
- */
- void addValue(T t, String value) {
- values.put(t, value);
- }
-
- }
|