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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.SupportsHelp;
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, SupportsHelp {
40  
41    private transient boolean nextToRenderIsLabel;
42  
43    @Override
44    public void validate(final FacesContext facesContext) {
45      if (isRequired()) {
46        if (getSubmittedValue() instanceof Part) {
47          final Part file = (Part) getSubmittedValue();
48          if (file == null || file.getName().length() == 0) {
49            addErrorMessage(facesContext);
50            setValid(false);
51          }
52        } else {
53          addErrorMessage(facesContext);
54          setValid(false);
55        }
56      }
57      super.validate(facesContext);
58    }
59  
60    private void addErrorMessage(final FacesContext facesContext) {
61      facesContext.addMessage(getClientId(facesContext),
62          MessageUtils.getMessage(facesContext, FacesMessage.SEVERITY_ERROR, REQUIRED_MESSAGE_ID, getId()));
63    }
64  
65    public abstract boolean isDisabled();
66  
67    public abstract boolean isReadonly();
68  
69    public abstract boolean isMultiple();
70  
71    public abstract Integer getTabIndex();
72  
73    public abstract String getPlaceholder();
74  
75    @Override
76    public String getFieldId(final FacesContext facesContext) {
77      return getClientId(facesContext) + ComponentUtils.SUB_SEPARATOR + "field";
78    }
79  
80    @Override
81    public boolean isNextToRenderIsLabel() {
82      return nextToRenderIsLabel;
83    }
84  
85    @Override
86    public void setNextToRenderIsLabel(final boolean nextToRenderIsLabel) {
87      this.nextToRenderIsLabel = nextToRenderIsLabel;
88    }
89  }