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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.LabelLayout;
23  import org.apache.myfaces.tobago.component.SupportFieldId;
24  import org.apache.myfaces.tobago.component.SupportsLabelLayout;
25  import org.apache.myfaces.tobago.component.Visual;
26  import org.apache.myfaces.tobago.util.ComponentUtils;
27  import org.apache.myfaces.tobago.util.MessageUtils;
28  
29  import javax.faces.application.FacesMessage;
30  import javax.faces.component.UIInput;
31  import javax.faces.component.behavior.ClientBehaviorHolder;
32  import javax.faces.context.FacesContext;
33  import javax.servlet.http.Part;
34  
35  /**
36   * {@link org.apache.myfaces.tobago.internal.taglib.component.FileTagDeclaration}
37   */
38  public abstract class AbstractUIFile extends UIInput implements SupportsLabelLayout, Visual, ClientBehaviorHolder,
39      SupportFieldId {
40  
41    @Override
42    public void validate(final FacesContext facesContext) {
43      if (isRequired()) {
44        if (getSubmittedValue() instanceof Part) {
45          final Part file = (Part) getSubmittedValue();
46          if (file == null || file.getName().length() == 0) {
47            addErrorMessage(facesContext);
48            setValid(false);
49          }
50        } else {
51          addErrorMessage(facesContext);
52          setValid(false);
53        }
54      }
55      super.validate(facesContext);
56    }
57  
58    private void addErrorMessage(final FacesContext facesContext) {
59      MessageUtils.addMessage(
60          facesContext, this, FacesMessage.SEVERITY_ERROR, REQUIRED_MESSAGE_ID, new Object[]{getId()});
61    }
62  
63    public abstract boolean isDisabled();
64  
65    public abstract boolean isReadonly();
66  
67    public abstract boolean isMultiple();
68  
69    public abstract Integer getTabIndex();
70  
71    @Override
72    public String getFieldId(final FacesContext facesContext) {
73      return getClientId(facesContext) + ComponentUtils.SUB_SEPARATOR + "real";
74    }
75  
76    public boolean isLabelLayoutSkip() {
77      return getLabelLayout() == LabelLayout.skip;
78    }
79  }