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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.myfaces.tobago.component.SupportFieldId;
23  import org.apache.myfaces.tobago.component.SupportsLabelLayout;
24  import org.apache.myfaces.tobago.component.Visual;
25  import org.apache.myfaces.tobago.util.ComponentUtils;
26  import org.apache.myfaces.tobago.util.MessageUtils;
27  
28  import javax.faces.application.FacesMessage;
29  import javax.faces.component.UIInput;
30  import javax.faces.component.behavior.ClientBehaviorHolder;
31  import javax.faces.context.FacesContext;
32  import javax.servlet.http.Part;
33  
34  /**
35   * {@link org.apache.myfaces.tobago.internal.taglib.component.FileTagDeclaration}
36   */
37  public abstract class AbstractUIFile extends UIInput implements SupportsLabelLayout, Visual, ClientBehaviorHolder,
38      SupportFieldId {
39  
40    @Override
41    public void validate(final FacesContext facesContext) {
42      if (isRequired()) {
43        if (getSubmittedValue() instanceof Part) {
44          final Part file = (Part) getSubmittedValue();
45          if (file == null || file.getName().length() == 0) {
46            addErrorMessage(facesContext);
47            setValid(false);
48          }
49        } else {
50          addErrorMessage(facesContext);
51          setValid(false);
52        }
53      }
54      super.validate(facesContext);
55    }
56  
57    private void addErrorMessage(final FacesContext facesContext) {
58      MessageUtils.addMessage(
59          facesContext, this, FacesMessage.SEVERITY_ERROR, REQUIRED_MESSAGE_ID, new Object[]{getId()});
60    }
61  
62    public abstract boolean isDisabled();
63  
64    public abstract boolean isReadonly();
65  
66    public abstract boolean isMultiple();
67  
68    public abstract Integer getTabIndex();
69  
70    @Override
71    public String getFieldId(final FacesContext facesContext) {
72      return getClientId(facesContext) + ComponentUtils.SUB_SEPARATOR + "real";
73    }
74  
75  }