Package org.pentaho.reporting.engine.classic.extensions.modules.sbarcodes

Source Code of org.pentaho.reporting.engine.classic.extensions.modules.sbarcodes.BarcodeTypePropertyEditor

/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2009 Pentaho Corporation.  All rights reserved.
*/

package org.pentaho.reporting.engine.classic.extensions.modules.sbarcodes;

import java.awt.Component;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.beans.PropertyEditor;

/**
* Todo: Document me!
* <p/>
* Date: 17.05.2009
* Time: 14:07:56
*
* @author Thomas Morgner.
*/
public class BarcodeTypePropertyEditor implements PropertyEditor
{
  private String value;
  private PropertyChangeSupport propertyChangeSupport;

  public BarcodeTypePropertyEditor()
  {
    propertyChangeSupport = new PropertyChangeSupport(this);
  }

  /**
   * Set (or change) the object that is to be edited.  Primitive types such as "int" must be wrapped as the
   * corresponding object type such as "java.lang.Integer".
   *
   * @param value The new target object to be edited.  Note that this object should not be modified by the
   *              PropertyEditor, rather the PropertyEditor should create a new object to hold any modified value.
   */
  public void setValue(final Object value)
  {
    final Object oldValue = this.value;
    if (isValidBarcode(value))
    {
      this.value = (String) value;
    }
    else
    {
      this.value = null;
    }

    propertyChangeSupport.firePropertyChange(null, oldValue, this.value);
  }

  private boolean isValidBarcode(final Object barodeType)
  {
    if (SimpleBarcodesUtility.BARCODE_2OF5.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_2OF5INT.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_CODABAR.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_CODE128.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_CODE128A.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_CODE128B.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_CODE128C.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_CODE128A.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_CODE39.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_CODE39EXT.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_EAN13.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_ISBN.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_PDF417.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_PDF417.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_POSTNET.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_UCCEAN128.equals(barodeType))
    {
      return true;
    }
    if (SimpleBarcodesUtility.BARCODE_UPCA.equals(barodeType))
    {
      return true;
    }
    return false;
  }

  /**
   * Gets the property value.
   *
   * @return The value of the property.  Primitive types such as "int" will be wrapped as the corresponding object type
   *         such as "java.lang.Integer".
   */

  public Object getValue()
  {
    return value;
  }

  /**
   * Determines whether this property editor is paintable.
   *
   * @return True if the class will honor the paintValue method.
   */

  public boolean isPaintable()
  {
    return false;
  }

  /**
   * Paint a representation of the value into a given area of screen real estate.  Note that the propertyEditor is
   * responsible for doing its own clipping so that it fits into the given rectangle.
   * <p/>
   * If the PropertyEditor doesn't honor paint requests (see isPaintable) this method should be a silent noop.
   * <p/>
   * The given Graphics object will have the default font, color, etc of the parent container.  The PropertyEditor may
   * change graphics attributes such as font and color and doesn't need to restore the old values.
   *
   * @param gfx Graphics object to paint into.
   * @param box Rectangle within graphics object into which we should paint.
   */
  public void paintValue(final Graphics gfx, final Rectangle box)
  {

  }

  /**
   * Returns a fragment of Java code that can be used to set a property to match the editors current state. This method
   * is intended for use when generating Java code to reflect changes made through the property editor.
   * <p/>
   * The code fragment should be context free and must be a legal Java expression as specified by the JLS.
   * <p/>
   * Specifically, if the expression represents a computation then all classes and static members should be fully
   * qualified. This rule applies to constructors, static methods and non primitive arguments.
   * <p/>
   * Caution should be used when evaluating the expression as it may throw exceptions. In particular, code generators
   * must ensure that generated code will compile in the presence of an expression that can throw checked exceptions.
   * <p/>
   * Example results are: <ul> <li>Primitive expresssion: <code>2</code> <li>Class constructor: <code>new
   * java.awt.Color(127,127,34)</code> <li>Static field: <code>java.awt.Color.orange</code> <li>Static method:
   * <code>javax.swing.Box.createRigidArea(new java.awt.Dimension(0, 5))</code> </ul>
   *
   * @return a fragment of Java code representing an initializer for the current value. It should not contain a
   *         semi-colon ('<code>;</code>') to end the expression.
   */
  public String getJavaInitializationString()
  {
    return null;
  }

  /**
   * Gets the property value as text.
   *
   * @return The property value as a human editable string. <p>   Returns null if the value can't be expressed as an
   *         editable string. <p>   If a non-null value is returned, then the PropertyEditor should be prepared to parse
   *         that string back in setAsText().
   */
  public String getAsText()
  {
    if (value == null)
    {
      return null;
    }
    return value;
  }

  /**
   * Set the property value by parsing a given String.  May raise java.lang.IllegalArgumentException if either the
   * String is badly formatted or if this kind of property can't be expressed as text.
   *
   * @param text The string to be parsed.
   */
  public void setAsText(final String text) throws IllegalArgumentException
  {
    setValue(text);
  }

  /**
   * If the property value must be one of a set of known tagged values, then this method should return an array of the
   * tags.  This can be used to represent (for example) enum values.  If a PropertyEditor supports tags, then it should
   * support the use of setAsText with a tag value as a way of setting the value and the use of getAsText to identify
   * the current value.
   *
   * @return The tag values for this property.  May be null if this property cannot be represented as a tagged value.
   */
  public String[] getTags()
  {
    return new String[]{
        SimpleBarcodesUtility.BARCODE_2OF5,
        SimpleBarcodesUtility.BARCODE_2OF5INT,
        SimpleBarcodesUtility.BARCODE_CODABAR,
        SimpleBarcodesUtility.BARCODE_CODE128,
        SimpleBarcodesUtility.BARCODE_CODE128A,
        SimpleBarcodesUtility.BARCODE_CODE128B,
        SimpleBarcodesUtility.BARCODE_CODE128C,
        SimpleBarcodesUtility.BARCODE_CODE39,
        SimpleBarcodesUtility.BARCODE_CODE39EXT,
        SimpleBarcodesUtility.BARCODE_EAN13,
        SimpleBarcodesUtility.BARCODE_ISBN,
        SimpleBarcodesUtility.BARCODE_PDF417,
        SimpleBarcodesUtility.BARCODE_POSTNET,
        SimpleBarcodesUtility.BARCODE_UCCEAN128,
        SimpleBarcodesUtility.BARCODE_UPCA
    };
  }

  /**
   * A PropertyEditor may choose to make available a full custom Component that edits its property value.  It is the
   * responsibility of the PropertyEditor to hook itself up to its editor Component itself and to report property value
   * changes by firing a PropertyChange event.
   * <p/>
   * The higher-level code that calls getCustomEditor may either embed the Component in some larger property sheet, or
   * it may put it in its own individual dialog, or ...
   *
   * @return A java.awt.Component that will allow a human to directly edit the current property value.  May be null if
   *         this is not supported.
   */

  public Component getCustomEditor()
  {
    return null;
  }

  /**
   * Determines whether this property editor supports a custom editor.
   *
   * @return True if the propertyEditor can provide a custom editor.
   */
  public boolean supportsCustomEditor()
  {
    return false;
  }

  /**
   * Register a listener for the PropertyChange event.  When a PropertyEditor changes its value it should fire a
   * PropertyChange event on all registered PropertyChangeListeners, specifying the null value for the property name and
   * itself as the source.
   *
   * @param listener An object to be invoked when a PropertyChange event is fired.
   */
  public void addPropertyChangeListener(final PropertyChangeListener listener)
  {
    propertyChangeSupport.addPropertyChangeListener(listener);
  }

  /**
   * Remove a listener for the PropertyChange event.
   *
   * @param listener The PropertyChange listener to be removed.
   */
  public void removePropertyChangeListener(final PropertyChangeListener listener)
  {
    propertyChangeSupport.removePropertyChangeListener(listener);
  }
}
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