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1   /*
2    * $Id: TypeDetectingAttributeRenderer.java 821299 2009-10-03 12:15:05Z apetrelli $
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   * http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  package org.apache.tiles.renderer;
23  
24  import org.apache.tiles.Attribute;
25  import org.apache.tiles.context.TilesRequestContext;
26  
27  /***
28   * It represents a renderer that identifies attributes that can render.
29   *
30   * @version $Rev: 821299 $ $Date: 2009-10-03 14:15:05 +0200 (sab, 03 ott 2009) $
31   * @since 2.2.1
32   */
33  public interface TypeDetectingAttributeRenderer extends AttributeRenderer {
34  
35      /***
36       * Checks if this renderer can render an attribute. Note that this does not mean
37       * it is the <strong>best</strong> renderer available, but checks only its capability.
38       *
39       * @param attribute The attribute to be renderer.
40       * @param request The Tiles request context.
41       * @return <code>true</code> if this renderer can render the attribute.
42       * @since 2.2.1
43       */
44      boolean isRenderable(Attribute attribute, TilesRequestContext request);
45  
46      /***
47       * Checks if this renderer can render an attribute. Note that this does not mean
48       * it is the <strong>best</strong> renderer available, but checks only its capability.
49       *
50       * @param value The attribute value, already evaluated.
51       * @param attribute The attribute to be renderer.
52       * @param request The Tiles request context.
53       * @return <code>true</code> if this renderer can render the attribute.
54       * @since 2.2.1
55       */
56      boolean isRenderable(Object value, Attribute attribute,
57              TilesRequestContext request);
58  }