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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.commons.fileupload.FileItem;
23  import org.apache.myfaces.tobago.component.UIFileInput;
24  import org.apache.myfaces.tobago.layout.LayoutComponent;
25  import org.apache.myfaces.tobago.util.MessageUtils;
26  
27  import javax.faces.application.FacesMessage;
28  import javax.faces.component.UIInput;
29  import javax.faces.context.FacesContext;
30  
31  public abstract class AbstractUIFile extends UIInput implements LayoutComponent, UIFileInput {
32  
33    public void validate(final FacesContext facesContext) {
34      if (isRequired()) {
35        if (getSubmittedValue() instanceof FileItem) {
36          final FileItem file = (FileItem) getSubmittedValue();
37          if (file == null || file.getName().length() == 0) {
38            addErrorMessage(facesContext);
39            setValid(false);
40          }
41        } else {
42          addErrorMessage(facesContext);
43          setValid(false);
44        }
45      }
46      super.validate(facesContext);
47    }
48  
49    private void addErrorMessage(final FacesContext facesContext) {
50      MessageUtils.addMessage(
51          facesContext, this, FacesMessage.SEVERITY_ERROR, REQUIRED_MESSAGE_ID, new Object[]{getId()});
52    }
53  
54    public abstract boolean isDisabled();
55  
56    public abstract boolean isReadonly();
57  
58    public abstract Integer getTabIndex();
59  }