deleteelementaction.java

报表设计软件,很好的

/**
 * ========================================
 * JFreeReport : a free Java report library
 * ========================================
 *
 * Project Info:  http://www.jfree.org/jfreereport/index.html
 * Project Lead:  Thomas Morgner ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Simba Management Limited and Contributors.
 *
 * 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.
 *
 * ------------------------------
 * DeleteElementAction.java
 * ------------------------------
 * (C)opyright 2003, by Thomas Morgner and Contributors.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Simba Management Limited);
 *
 * $Id: DeleteElementAction.java,v 1.3 2004/04/20 18:54:54 taqua Exp $
 *
 * Changes
 * -------------------------
 * 25.10.2003 : Initial version
 *
 */

package org.jfree.designer.visualeditor.actions;

import java.awt.event.ActionEvent;

import org.jfree.designer.resources.ResourceBundleUtils;
import org.jfree.designer.util.AbstractDesignerAction;
import org.jfree.designer.visualeditor.VisualEditPanel;
import org.jfree.designer.visualeditor.bandeditor.ReportBandEditor;
import org.jfree.designer.visualeditor.bandeditor.ReportDefinitionSelectionModel;
import org.jfree.report.Element;
import org.jfree.report.modules.gui.base.components.ActionDowngrade;

public final class DeleteElementAction
        extends AbstractDesignerAction
{
  private final VisualEditPanel visualEditPanel;

  /**
   * Defines an <code>Action</code> object with a default description string and default
   * icon.
   */
  public DeleteElementAction (final VisualEditPanel visualEditPanel)
  {
    this.visualEditPanel = visualEditPanel;
    putValue(NAME, getResources().getString
            ("action.visual.delete-element.Name"));
    putValue(SMALL_ICON, ResourceBundleUtils.getIcon
            (getResources().getString("action.visual.delete-element.SmallIcon")));
    putValue(ActionDowngrade.ACCELERATOR_KEY, ResourceBundleUtils.createMenuKeystroke
            (getResources().getString("action.visual.delete-element.KeyStroke")));
  }

  /**
   * Invoked when an action occurs.
   */
  public final void actionPerformed (final ActionEvent e)
  {
    final ReportBandEditor[] editors = visualEditPanel.getCurrentRootBandEditors();
    for (int i = 0; i < editors.length; i++)
    {
      final ReportDefinitionSelectionModel selectionModel =
              editors[i].getSelectionModel();
      if (selectionModel.getSelectionCount() == 0)
      {
        continue;
      }

      final Element[] elements = selectionModel.getSelectedElements();
      for (int ec = 0; ec < elements.length; ec++)
      {
        final Element element = elements[ec];
        if (element.getParent() == null)
        {
          continue;
        }
        element.getParent().removeElement(element);
        visualEditPanel.getDataRow().disconnectDataSource(element);
      }

      visualEditPanel.reportDefinitionChanged();
      editors[i].repaint();
    }
  }
}