/*
    * $Header: /cvsroot/jdbforms/dbforms/src/org/dbforms/taglib/TextFormatTag.java,v 1.7 2006/01/13 13:38:51 hkollmann Exp $
    * $Revision: 1.7 $
    * $Date: 2006/01/13 13:38:51 $
    *
    * DbForms - a Rapid Application Development Framework
    * Copyright (C) 2001 Joachim Peer <joepeer@excite.com>
    *
    * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   */
  
  package org.dbforms.taglib;
  
  import org.apache.commons.beanutils.PropertyUtils;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  import org.dbforms.config.Field;
  import org.dbforms.config.FieldValue;
  import org.dbforms.config.ResultSetVector;
  
  import org.dbforms.util.Util;
  
  import javax.servlet.jsp.JspException;
  
  
  
  /***
   * Special class for TextFormatting
   *
   * @author hkk
   */
  public class TextFormatTag extends AbstractDbBaseHandlerTag
     implements javax.servlet.jsp.tagext.TryCatchFinally {
     private static Log logCat      = LogFactory.getLog(TextFormatTag.class);
     private Object     fieldObject; // Holds the object to retrieve.
     private String contextVar;
     private String type;
     private String value;
  
     /***
      * DOCUMENT ME!
      *
      * @param contextVar DOCUMENT ME!
      */
     public void setContextVar(String contextVar) {
        this.contextVar = contextVar;
     }
  
  
     /***
      * DOCUMENT ME!
      *
      * @return DOCUMENT ME!
      */
     public String getContextVar() {
        return contextVar;
     }
  
  
     /***
      * DOCUMENT ME!
      *
      * @return
      */
     public Object getFieldObject() {
        return fieldObject;
     }
  
  
     /***
      * DOCUMENT ME!
      *
      * @param type The type to set.
      */
     public void setType(String type) {
        this.type = type;
     }
  
  
     /***
      * DOCUMENT ME!
      *
      * @return Returns the type.
      */
     public String getType() {
        return type;
    }
 
 
    /***
     * DOCUMENT ME!
     *
     * @param value The value to set.
     */
    public void setValue(String value) {
       this.value = value;
    }
 
 
    /***
     * DOCUMENT ME!
     *
     * @return Returns the value.
     */
    public String getValue() {
       return value;
    }
 
    /***
     * Description of the Method
     *
     * @return Description of the Return Value
     *
     * @exception javax.servlet.jsp.JspException Description of the Exception
     * @throws JspException DOCUMENT ME!
     */
    public int doEndTag() throws javax.servlet.jsp.JspException {
       if (Util.isNull(getContextVar()) && Util.isNull(getValue())) {
          throw new JspException("either var or value must be setted!");
       }
 
       Field field = new Field();
 
       if (!Util.isNull(getValue())) {
          if (Util.isNull(getType())) {
             throw new JspException("value setted - type must be setted  too!");
          }
 
          field.setFieldType(getType());
 
          FieldValue fv = new FieldValue(field, getValue());
          fv.setPattern(getPattern());
          fieldObject = fv.getFieldValueAsObject();
       } else {
          String          search = getContextVar();
          int             pos = search.indexOf(".");
 
          ResultSetVector rsv = null;
 
          if (getParentForm() != null) {
             rsv = getParentForm()
                      .getResultSetVector();
          }
 
          if (pos == -1) {
             if (rsv != null) {
                fieldObject = rsv.getAttribute(search);
             }
 
             if (fieldObject == null) {
                // simple type, 'search' is an object in the session
                fieldObject = pageContext.findAttribute(search);
             }
          } else {
             try {
                // complex, 'search' is really a bean
                String search_bean = search.substring(0, pos);
                search = search.substring(pos + 1);
 
                Object bean = null;
 
                if (rsv != null) {
                   bean = rsv.getAttribute(search_bean);
                }
 
                if (bean == null) {
                   // simple type, 'search' is an object in the session
                   bean = pageContext.findAttribute(search_bean);
                }
 
                if (bean != null) {
                   logCat.debug("calling PropertyUtils.getProperty "
                                + search_bean + " " + search);
                   fieldObject = PropertyUtils.getProperty(bean, search);
                }
             } catch (Exception e) {
                throw new JspException(e.getMessage());
             }
          }
 
          if (fieldObject == null) {
             throw new JspException("object not found in context!");
          }
 
          field.setTypeByObject(fieldObject);
       }
 
       this.setField(field);
 
       String fieldValue = getFormattedFieldValue();
       fieldValue = escapeHTML(fieldValue);
 
       try {
          pageContext.getOut()
                     .write(fieldValue);
       } catch (java.io.IOException ioe) {
          // better to KNOW what happended !
          throw new JspException("IO Error: " + ioe.getMessage());
       }
 
       return EVAL_PAGE;
    }
 
 
    /***
     * DOCUMENT ME!
     */
    public void doFinally() {
       type       = null;
       value      = null;
       contextVar = null;
       super.doFinally();
    }
 
 
    /***
     * DOCUMENT ME!
     *
     * @param fieldObject DOCUMENT ME!
     */
    protected void setFieldObject(Object fieldObject) {
       this.fieldObject = fieldObject;
    }
 }