Package org.pentaho.reporting.ui.datasources.table

Source Code of org.pentaho.reporting.ui.datasources.table.DateCellEditor$InternalDateUpdateHandler

package org.pentaho.reporting.ui.datasources.table;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Point;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.text.DateFormat;
import java.text.DateFormatSymbols;
import java.text.Format;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.EventObject;
import java.util.Locale;
import java.util.TimeZone;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.border.Border;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.event.EventListenerList;
import javax.swing.table.TableCellEditor;
import javax.swing.text.JTextComponent;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.engine.classic.core.modules.gui.base.date.DateChooserPanel;
import org.pentaho.reporting.engine.classic.core.modules.gui.commonswing.SwingUtil;
import org.pentaho.reporting.engine.classic.core.util.beans.BeanException;
import org.pentaho.reporting.engine.classic.core.util.beans.ConverterRegistry;
import org.pentaho.reporting.libraries.base.util.StringUtils;
import org.pentaho.reporting.libraries.designtime.swing.EllipsisButton;

/**
* Todo: Document me!
* <p/>
* Date: 16.01.2010
* Time: 14:28:33
*
* @author Thomas Morgner.
* @deprecated This class now exists in LibSwing
*/
public class DateCellEditor extends JPanel implements TableCellEditor
{
  private static class TextComponentEditHandler implements Runnable, DocumentListener, ActionListener
  {
    private Class type;
    private JTextComponent textComponent;
    private DateChooserPanel dateChooserPanel;
    private Format formatter;
    private Color color;
    private boolean inProgress;

    public TextComponentEditHandler(final Class type,
                                    final JTextComponent textComponent,
                                    final Format formatter,
                                    final DateChooserPanel dateChooserPanel)
    {
      this.type = type;
      this.textComponent = textComponent;
      this.formatter = formatter;
      this.dateChooserPanel = dateChooserPanel;
      this.color = this.textComponent.getBackground();
    }

    protected Class getType()
    {
      return type;
    }

    /**
     * Gives notification that there was an insert into the document.  The range given by the DocumentEvent bounds the
     * freshly inserted region.
     *
     * @param e the document event
     */
    public void insertUpdate(final DocumentEvent e)
    {
      convertParameterValue();
    }

    /**
     * Gives notification that a portion of the document has been removed.  The range is given in terms of what the view
     * last saw (that is, before updating sticky positions).
     *
     * @param e the document event
     */
    public void removeUpdate(final DocumentEvent e)
    {
      convertParameterValue();
    }

    /**
     * Gives notification that an attribute or set of attributes changed.
     *
     * @param e the document event
     */
    public void changedUpdate(final DocumentEvent e)
    {
      convertParameterValue();
    }

    private void convertParameterValue()
    {
      if (inProgress)
      {
        return;
      }
      inProgress = true;
      SwingUtilities.invokeLater(this);
    }

    public void run()
    {
      convert();
    }

    protected void convert()
    {
      try
      {
        final String text = textComponent.getText();
        textComponent.setBackground(color);

        final Date date = convertValue(text);
        dateChooserPanel.setDate(date);
      }
      catch (BeanException e)
      {
        // ignore, do not update (yet).
        textComponent.setBackground(Color.RED);
      }
      finally
      {
        inProgress = false;
      }
    }

    protected Date convertValue(final String text) throws BeanException
    {
      if (StringUtils.isEmpty(text))
      {
        return null;
      }

      if (formatter != null)
      {
        try
        {
          final Object o = formatter.parseObject(text);
          // this magic converts the date or number value to the real type.
          // the formatter always returns doubles/bigdecimals or java.util.Dates
          // but we may need sql-dates, long-objects etc ..
          final String asText = ConverterRegistry.toAttributeValue(o);
          return (Date) ConverterRegistry.toPropertyValue(asText, getType());
        }
        catch (ParseException e)
        {
          throw new BeanException("Failed to format object");
        }
      }
      return (Date) ConverterRegistry.toPropertyValue(text, type);
    }

    /**
     * Invoked when an action occurs.
     */
    public void actionPerformed(final ActionEvent e)
    {
      convert();
    }
  }

  private class CloseDatePickerAction extends AbstractAction
  {
    /**
     * Defines an <code>Action</code> object with a default
     * description string and default icon.
     */
    private CloseDatePickerAction()
    {
      putValue(Action.NAME, "Close");
    }

    public void actionPerformed(final ActionEvent e)
    {
      dateWindow.setVisible(false);
    }
  }


  private class PickDateListener extends AbstractAction
  {
    /**
     * Defines an <code>Action</code> object with a default
     * description string and default icon.
     */
    private PickDateListener()
    {
      putValue(Action.NAME, "..");
    }

    /**
     * Invoked when an action occurs.
     */
    public void actionPerformed(final ActionEvent e)
    {
      if (dateWindow != null && dateWindow.isVisible())
      {
        dateWindow.setVisible(false);
      }

      dateChooserPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

      final Border border = BorderFactory.createCompoundBorder
          (BorderFactory.createLineBorder(Color.BLACK), BorderFactory.createEmptyBorder(5, 5, 5, 5));

      final JButton closeButton = new JButton(new CloseDatePickerAction());

      final JPanel popupPanel = new JPanel(new BorderLayout());
      popupPanel.setBorder(border);
      popupPanel.add(dateChooserPanel, BorderLayout.CENTER);
      popupPanel.add(closeButton, BorderLayout.SOUTH);

      dateWindow = new Window(SwingUtil.getWindowAncestor(DateCellEditor.this));
      dateWindow.setLayout(new BorderLayout());
      dateWindow.add(popupPanel, BorderLayout.CENTER);
      dateWindow.pack();

      final Point point = new Point(0, pickDateButton.getHeight());
      SwingUtilities.convertPointToScreen(point, pickDateButton);
      dateWindow.setLocation(point);
      dateWindow.setVisible(true);
    }
  }

  private class InternalDateUpdateHandler implements PropertyChangeListener
  {
    public void propertyChange(final PropertyChangeEvent changeEvent)
    {
      if (!DateChooserPanel.PROPERTY_DATE.equals(changeEvent.getPropertyName()))
      {
        return;
      }

      final Date date = (Date) changeEvent.getNewValue();
      if (date == null)
      {
        dateField.setText(null);
      }
      else
      {
        dateField.setText(sdf.format(date));
      }
    }
  }

  private static final Log logger = LogFactory.getLog(DateCellEditor.class);
  private DateChooserPanel dateChooserPanel;
  private JTextField dateField;
  private DateFormat sdf;
  private Window dateWindow;
  private JButton pickDateButton;
  private Class dateType;
  private EventListenerList listeners;

  /**
   * Constructs a new <code>DatePickerParameterComponent</code>.
   */
  public DateCellEditor(final Class dateType)
  {
    this.listeners = new EventListenerList();
    this.dateType = dateType;
    if (this.dateType.isArray())
    {
      this.dateType = this.dateType.getComponentType();
    }

    final String formatString = "yyyy-MM-dd HH:mm:ss.SSS";
    sdf = createDateFormat(formatString, Locale.getDefault(), TimeZone.getDefault());

    dateChooserPanel = new DateChooserPanel(Calendar.getInstance(), true);
    dateChooserPanel.addPropertyChangeListener(DateChooserPanel.PROPERTY_DATE, new InternalDateUpdateHandler());
    dateChooserPanel.setChosenDateButtonColor(Color.RED);
    dateChooserPanel.setChosenOtherButtonColor(Color.LIGHT_GRAY);

    dateField = new JTextField();
    dateField.setColumns(20);

    final TextComponentEditHandler listener =
        new TextComponentEditHandler(dateType, dateField, sdf, dateChooserPanel);
    dateField.getDocument().addDocumentListener(listener);
    dateField.addActionListener(listener);

    setLayout(new BorderLayout());
    dateField.setEditable(true);

    pickDateButton = new EllipsisButton(new PickDateListener());

    add(dateField, BorderLayout.CENTER);
    add(pickDateButton, BorderLayout.EAST);
  }

  private DateFormat createDateFormat(final String parameterFormatString,
                                      final Locale locale,
                                      final TimeZone timeZone)
  {
    if (parameterFormatString != null)
    {
      try
      {
        final SimpleDateFormat dateFormat = new SimpleDateFormat(parameterFormatString, new DateFormatSymbols(locale));
        dateFormat.setTimeZone(timeZone);
        dateFormat.setLenient(true);
        return dateFormat;
      }
      catch (Exception e)
      {
        // boo! Not a valid pattern ...
        // its not a show-stopper either, as the pattern is a mere hint, not a mandatory thing
        logger.warn("Parameter format-string for date-parameter was not a valid date-format-string", e);
      }
    }

    return DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
  }

  private void setDate(final Object value)
  {
    if (dateWindow != null && dateWindow.isVisible())
    {
      dateWindow.setVisible(false);
    }
    if (value == null)
    {
      dateChooserPanel.setDate(null);
      return;
    }
    if (value instanceof String)
    {
      // if its a string, then it must be in the normalized parameter format.
      try
      {
        final String text = (String) value;
        if (StringUtils.isEmpty(text))
        {
          dateChooserPanel.setDate(null);
          dateField.setText(null);
        }
        else
        {
          final Date date = (Date) ConverterRegistry.toPropertyValue(text, dateType);
          dateChooserPanel.setDate(date);
          dateField.setText(sdf.format(date));
        }
      }
      catch (Exception e)
      {
        logger.debug("Unparsable date-string", e);
      }
    }
    else if (value instanceof Date)
    {
      final Date date = (Date) value;
      dateChooserPanel.setDate(date);
      dateField.setText(sdf.format(date));
    }
    else
    {
      logger.debug("Date-parameter must be set either as normalized date-string or as date-object: " +
          value + " [" + value.getClass() + "]");
    }
  }

  /**
   * Sets an initial <code>value</code> for the editor.  This will cause
   * the editor to <code>stopEditing</code> and lose any partially
   * edited value if the editor is editing when this method is called. <p>
   * <p/>
   * Returns the component that should be added to the client's
   * <code>Component</code> hierarchy.  Once installed in the client's
   * hierarchy this component will then be able to draw and receive
   * user input.
   *
   * @param table      the <code>JTable</code> that is asking the
   *                   editor to edit; can be <code>null</code>
   * @param value      the value of the cell to be edited; it is
   *                   up to the specific editor to interpret
   *                   and draw the value.  For example, if value is
   *                   the string "true", it could be rendered as a
   *                   string or it could be rendered as a check
   *                   box that is checked.  <code>null</code>
   *                   is a valid value
   * @param isSelected true if the cell is to be rendered with
   *                   highlighting
   * @param row        the row of the cell being edited
   * @param column     the column of the cell being edited
   * @return the component for editing
   */
  public Component getTableCellEditorComponent(final JTable table,
                                               final Object value,
                                               final boolean isSelected,
                                               final int row,
                                               final int column)
  {
    setDate(value);
    return this;
  }

  /**
   * Returns the value contained in the editor.
   *
   * @return the value contained in the editor
   */
  public Object getCellEditorValue()
  {
    return dateChooserPanel.getDate();
  }

  /**
   * Asks the editor if it can start editing using <code>anEvent</code>. <code>anEvent</code> is in the invoking
   * component coordinate system. The editor can not assume the Component returned by
   * <code>getCellEditorComponent</code> is installed.  This method is intended for the use of client to avoid the cost
   * of setting up and installing the editor component if editing is not possible. If editing can be started this method
   * returns true.
   *
   * @param anEvent the event the editor should use to consider whether to begin editing or not
   * @return true if editing can be started
   * @see #shouldSelectCell
   */
  public boolean isCellEditable(final EventObject anEvent)
  {
    if (anEvent instanceof MouseEvent)
    {
      final MouseEvent mouseEvent = (MouseEvent) anEvent;
      return mouseEvent.getClickCount() >= 2 && mouseEvent.getButton() == MouseEvent.BUTTON1;
    }
    return true;
  }

  /**
   * Returns true if the editing cell should be selected, false otherwise. Typically, the return value is true, because
   * is most cases the editing cell should be selected.  However, it is useful to return false to keep the selection
   * from changing for some types of edits. eg. A table that contains a column of check boxes, the user might want to be
   * able to change those checkboxes without altering the selection.  (See Netscape Communicator for just such an
   * example) Of course, it is up to the client of the editor to use the return value, but it doesn't need to if it
   * doesn't want to.
   *
   * @param anEvent the event the editor should use to start editing
   * @return true if the editor would like the editing cell to be selected; otherwise returns false
   * @see #isCellEditable
   */
  public boolean shouldSelectCell(final EventObject anEvent)
  {
    return true;
  }

  /**
   * Tells the editor to stop editing and accept any partially edited value as the value of the editor.  The editor
   * returns false if editing was not stopped; this is useful for editors that validate and can not accept invalid
   * entries.
   *
   * @return true if editing was stopped; false otherwise
   */
  public boolean stopCellEditing()
  {
    if (dateWindow != null)
    {
      dateWindow.setVisible(false);
    }
    fireEditingStopped();
    return true;
  }

  /**
   * Tells the editor to cancel editing and not accept any partially edited value.
   */
  public void cancelCellEditing()
  {
    if (dateWindow != null)
    {
      dateWindow.setVisible(false);
    }
    fireEditingCanceled();
  }


  protected void fireEditingCanceled()
  {
    final CellEditorListener[] listeners = this.listeners.getListeners(CellEditorListener.class);
    final ChangeEvent event = new ChangeEvent(this);
    for (int i = 0; i < listeners.length; i++)
    {
      final CellEditorListener listener = listeners[i];
      listener.editingCanceled(event);
    }
  }


  protected void fireEditingStopped()
  {
    final CellEditorListener[] listeners = this.listeners.getListeners(CellEditorListener.class);
    final ChangeEvent event = new ChangeEvent(this);
    for (int i = 0; i < listeners.length; i++)
    {
      final CellEditorListener listener = listeners[i];
      listener.editingStopped(event);
    }
  }

  /**
   * Adds a listener to the list that's notified when the editor
   * stops, or cancels editing.
   *
   * @param l the CellEditorListener
   */
  public void addCellEditorListener(final CellEditorListener l)
  {
    listeners.add(CellEditorListener.class, l);
  }

  /**
   * Removes a listener from the list that's notified
   *
   * @param l the CellEditorListener
   */
  public void removeCellEditorListener(final CellEditorListener l)
  {
    listeners.remove(CellEditorListener.class, l);
  }
}
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