View Javadoc
1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  
20  package org.apache.myfaces.tobago.internal.component;
21  
22  import org.apache.myfaces.tobago.internal.util.DateFormatUtils;
23  import org.apache.myfaces.tobago.util.ComponentUtils;
24  import org.slf4j.Logger;
25  import org.slf4j.LoggerFactory;
26  
27  import javax.faces.context.FacesContext;
28  import javax.faces.convert.Converter;
29  import javax.faces.convert.DateTimeConverter;
30  import java.util.Date;
31  
32  /**
33   * {@link org.apache.myfaces.tobago.internal.taglib.component.DateTagDeclaration}
34   */
35  public abstract class AbstractUIDate extends AbstractUIInput {
36  
37    private static final Logger LOG = LoggerFactory.getLogger(AbstractUIDate.class);
38  
39    public String getPattern() {
40      final FacesContext facesContext = getFacesContext();
41      Converter converter = ComponentUtils.getConverter(facesContext, this, getSubmittedValue());
42      if (!(converter instanceof DateTimeConverter)) {
43        // hack for prototyping, if there is no value behind the component.
44        converter = facesContext.getApplication().createConverter(Date.class);
45        if (LOG.isWarnEnabled()) {
46          LOG.warn("Can't find a converter to get a pattern in component {}! Using default.",
47              getClientId(facesContext));
48        }
49      }
50      return DateFormatUtils.findPattern((DateTimeConverter) converter);
51    }
52  }