/*
 * @(#)FigureTransferCommand.java
 *
 * Project:		JHotdraw - a GUI framework for technical drawings
 *				http://www.jhotdraw.org
 *				http://jhotdraw.sourceforge.net
 * Copyright:	© by the original author(s) and all contributors
 * License:		Lesser GNU Public License (LGPL)
 *				http://www.opensource.org/licenses/lgpl-license.html
 */

package CH.ifa.draw.standard;

import java.util.*;
import CH.ifa.draw.util.*;
import CH.ifa.draw.framework.*;

/**
 * Common base clase for commands that transfer figures
 * between a drawing and the clipboard.
 *
 * @version <$CURRENT_VERSION$>
 */
public abstract class FigureTransferCommand extends AbstractCommand {

   /**
    * Constructs a drawing command.
    * @param name the command name
    * @param view the target view
    */
    protected FigureTransferCommand(String name, DrawingView view) {
        super(name, view);
    }

   /**
    * Deletes the selection from the drawing.
    */
    protected void deleteFigures(FigureEnumeration fe) {
        while (fe.hasMoreElements()) {
            view().drawing().orphan(fe.nextFigure());
        }

        view().clearSelection();
    }

   /**
    * Copies the FigureEnumeration to the clipboard.
    */
    protected void copyFigures(FigureEnumeration fe, int figureCount) {
        Clipboard.getClipboard().setContents(new StandardFigureSelection(fe, figureCount));
    }

   /**
    * Inserts a vector of figures and translates them by the
    * given offset.
    */
    FigureEnumeration insertFigures(FigureEnumeration fe, int dx, int dy) {
        return view().insertFigures(fe, dx, dy, false);
    }
}