pastestyleoperation.java

iReport-0.4.1-src是iReport的源代码,iReport是一个开源的报表项目,可以生成PDF等格式报表

/*
 * InsertElementOperation.java
 *
 *  iReport  --  Visual designer for generating JasperReports Documents
 *  Copyright (C) 2002-2003  Giulio Toffoli [e-mail]
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  Giulio Toffoli
 *  Via T.Aspetti, 233
 *  35100 Padova ITALY
 *  [e-mail]
 *
 *
 *
 * Created on 19 giugno 2003, 23.23
 */

package it.businesslogic.ireport.undo;
import it.businesslogic.ireport.gui.event.*;
import it.businesslogic.ireport.*;
import it.businesslogic.ireport.gui.*;
import it.businesslogic.ireport.util.*;
import java.awt.*;

import java.util.*;

/**

 * @author  Giulio Toffoli
 */
public class PasteStyleOperation implements it.businesslogic.ireport.UndoOperation {
    
    private Vector transformations = null; 
    
    private JReportFrame jrf = null;
    
    /** Creates a new instance of InsertElementOperation */
    public PasteStyleOperation(JReportFrame jrf) {
        this.transformations = new Vector();
        this.jrf = jrf;
    }
    
    public void redo()
    {
        if (jrf == null) return;

        //jrf.setSelectedElement(null);
        Enumeration e = this.getTransformations().elements();
        while ( e.hasMoreElements() )
        {
            PasteStyledElementItem ri = (PasteStyledElementItem)e.nextElement();
            ReportElement element = ri.getElement();
            JReportFrame.applyStyle( element,  ri.getNewStyle() );

            jrf.fireReportListenerReportElementsChanged(new ReportElementChangedEvent(jrf, element , ReportElementChangedEvent.CHANGED)); 
            //jrf.getSelectedElements().remove( element );
            //jrf.fireReportListenerReportElementsChanged(new ReportElementChangedEvent(jrf, element , ReportElementChangedEvent.REMOVED));          
        }
        jrf.getMainFrame().getElementPropertiesDialog().updateSelection();
        jrf.getReportPanel().repaint();
    }
    
    public void undo()
    {
        if (jrf == null) return;

        //jrf.setSelectedElement(null);
        Enumeration e = this.getTransformations().elements();
        while ( e.hasMoreElements() )
        {
            PasteStyledElementItem ri = (PasteStyledElementItem)e.nextElement();
            ReportElement element = ri.getElement();
            JReportFrame.applyStyle( element,  ri.getOriginalStyle() );

            jrf.fireReportListenerReportElementsChanged(new ReportElementChangedEvent(jrf, element , ReportElementChangedEvent.CHANGED)); 
            //jrf.getSelectedElements().remove( element );
            //jrf.fireReportListenerReportElementsChanged(new ReportElementChangedEvent(jrf, element , ReportElementChangedEvent.REMOVED));          
        }
        jrf.getMainFrame().getElementPropertiesDialog().updateSelection();
        jrf.getReportPanel().repaint();
    }   
    
    public String toString()
    {
        return "paste style";
    }
    
    /** Getter for property elements.
     * @return Value of property elements.
     *
     *  To add an element, use the addElement method. Don't access directly
     *  addElement from the vector elements 
     *  
     */
    public java.util.Vector getTransformations() {
        return transformations;
    }
    
    /** Setter for property elements.
     * @param elements New value of property elements.
     *
     */
    public void setTransformations(java.util.Vector transformations) {
        this.transformations = transformations;
    }
    
    /*
     *  Add an element to the list of elements handled by this
     *  undo operation. 
     *  You must supply the old and the new bound of you report.
     *  This make more simple the undo/redo operation...
     *  
     */
     public void addElement(ReportElement element, ReportElement originalStyle, ReportElement newStyle) {
         
        PasteStyledElementItem et = new PasteStyledElementItem(element,originalStyle,newStyle);
        getTransformations().add(et);
    }
    
}