Package org.pentaho.reporting.engine.classic.extensions.legacy.charts.propertyeditor

Source Code of org.pentaho.reporting.engine.classic.extensions.legacy.charts.propertyeditor.FontStringPropertyEditor$FontPropertiesHandler

/*
* 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.legacy.charts.propertyeditor;

import java.awt.Component;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.beans.PropertyEditor;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.pentaho.reporting.libraries.designtime.swing.BasicFontPropertiesPane;

/**
* Todo: Document me!
* <p/>
* Date: 23.04.2009
* Time: 19:55:03
*
* @author Thomas Morgner.
*/
public class FontStringPropertyEditor implements PropertyEditor
{
  private class FontPropertiesHandler implements ChangeListener
  {
    private FontPropertiesHandler()
    {
    }

    /**
     * Invoked when the target of the listener has changed its state.
     *
     * @param e a ChangeEvent object
     */
    public void stateChanged(final ChangeEvent e)
    {
      final String fontName = basicFontPropertiesPane.getFontFamily();
      final int fontSize = basicFontPropertiesPane.getFontSize();
      final int fontStyle = basicFontPropertiesPane.getFontStyle();
      final String fontStyleText;
      if ((fontStyle & (Font.BOLD | Font.ITALIC)) == (Font.BOLD | Font.ITALIC))
      {
        fontStyleText = "BOLDITALIC";
      }
      else if ((fontStyle & Font.BOLD) == Font.BOLD)
      {
        fontStyleText = "BOLD";
      }
      else if ((fontStyle & Font.ITALIC) == Font.ITALIC)
      {
        fontStyleText = "ITALIC";
      }
      else
      {
        fontStyleText = "PLAIN";
      }
      setValue(fontName + "-" + fontStyleText + "-" + fontSize);
    }
  }

  private String value;
  private PropertyChangeSupport propertyChangeSupport;
  private BasicFontPropertiesPane basicFontPropertiesPane;

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

  /**
   * 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)
  {

  }

  /**
   * 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);
  }

  /**
   * 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 (value instanceof String)
    {
      this.value = (String) value;
    }
    else
    {
      this.value = null;
    }

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

  /**
   * 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;
  }

  /**
   * 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()
  {
    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 null;
  }


  /**
   * 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()
  {
    if (basicFontPropertiesPane == null)
    {
      basicFontPropertiesPane = new BasicFontPropertiesPane();
      basicFontPropertiesPane.setExtendedFontPropertiesShowing(false);
      basicFontPropertiesPane.init();
      basicFontPropertiesPane.addChangeListener(new FontPropertiesHandler());
    }

    if (value != null)
    {
      final Font font = Font.decode(value);
      basicFontPropertiesPane.setFontFamily(font.getFamily());
      basicFontPropertiesPane.setFontStyle(font.getStyle());
      basicFontPropertiesPane.setFontSize(font.getSize());
    }
    return basicFontPropertiesPane;
  }

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

}
TOP

Related Classes of org.pentaho.reporting.engine.classic.extensions.legacy.charts.propertyeditor.FontStringPropertyEditor$FontPropertiesHandler

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.