001    package org.apache.myfaces.tobago.component;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one or more
005     * contributor license agreements.  See the NOTICE file distributed with
006     * this work for additional information regarding copyright ownership.
007     * The ASF licenses this file to You under the Apache License, Version 2.0
008     * (the "License"); you may not use this file except in compliance with
009     * the License.  You may obtain a copy of the License at
010     *
011     *      http://www.apache.org/licenses/LICENSE-2.0
012     *
013     * Unless required by applicable law or agreed to in writing, software
014     * distributed under the License is distributed on an "AS IS" BASIS,
015     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016     * See the License for the specific language governing permissions and
017     * limitations under the License.
018     */
019    
020    import org.apache.commons.fileupload.FileItem;
021    import static org.apache.myfaces.tobago.TobagoConstants.ATTR_ENCTYPE;
022    import static org.apache.myfaces.tobago.TobagoConstants.ATTR_TAB_INDEX;
023    import org.apache.myfaces.tobago.util.MessageFactory;
024    
025    import javax.faces.application.FacesMessage;
026    import javax.faces.component.UIComponent;
027    import javax.faces.context.FacesContext;
028    import javax.faces.el.ValueBinding;
029    
030    /*
031     * Date: 10.02.2006
032     * Time: 19:02:13
033     */
034    public class UIFileInput extends javax.faces.component.UIInput {
035      public static final String COMPONENT_TYPE = "org.apache.myfaces.tobago.FileInput";
036    
037      private Integer tabIndex;
038    
039      public void setParent(UIComponent uiComponent) {
040        super.setParent(uiComponent);
041        UIPage form = ComponentUtil.findPage(getFacesContext(), uiComponent);
042        if (form != null) {
043          form.getAttributes().put(ATTR_ENCTYPE, "multipart/form-data");
044        }
045      }
046    
047      public void validate(FacesContext facesContext) {
048        if (isRequired()) {
049          if (getSubmittedValue() instanceof FileItem) {
050            FileItem file = (FileItem) getSubmittedValue();
051            if (file == null || file.getName().length() == 0) {
052              addErrorMessage(facesContext);
053              setValid(false);
054            }
055          } else {
056            addErrorMessage(facesContext);
057            setValid(false);
058          }
059        }
060        super.validate(facesContext);
061      }
062    
063      private void addErrorMessage(FacesContext facesContext) {
064        FacesMessage facesMessage = MessageFactory.createFacesMessage(
065            facesContext, REQUIRED_MESSAGE_ID, FacesMessage.SEVERITY_ERROR);
066        facesContext.addMessage(getClientId(facesContext), facesMessage);
067      }
068    
069      public void restoreState(FacesContext context, Object state) {
070        Object[] values = (Object[]) state;
071        super.restoreState(context, values[0]);
072        tabIndex = (Integer) values[1];
073      }
074    
075      public Object saveState(FacesContext context) {
076        Object[] values = new Object[2];
077        values[0] = super.saveState(context);
078        values[1] = tabIndex;
079        return values;
080      }
081    
082      public Integer getTabIndex() {
083        if (tabIndex != null) {
084          return tabIndex;
085        }
086        ValueBinding vb = getValueBinding(ATTR_TAB_INDEX);
087        if (vb != null) {
088          Number number = (Number) vb.getValue(getFacesContext());
089          if (number != null) {
090            return Integer.valueOf(number.intValue());
091          }
092        }
093        return null;
094      }
095    
096      public void setTabIndex(Integer tabIndex) {
097        this.tabIndex = tabIndex;
098      }
099    }