removearrowlinkaction.java

思维导图(Mind Mapping)以放射性思考(Radiant Thinking)为基础的收放自如方式

/*
 * FreeMind - A Program for creating and viewing Mindmaps Copyright (C)
 * 2000-2004 Joerg Mueller, Daniel Polansky, Christian Foltin and others.
 * 
 * See COPYING for Details
 * 
 * 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., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307, USA.
 * 
 * Created on 08.10.2004
 */
/*
 * $Id: RemoveArrowLinkAction.java,v 1.16.10.1 08.10.2004 07:51:02
 * christianfoltin Exp $
 */

package freemind.modes.actions;

import java.awt.event.ActionEvent;

import javax.xml.bind.JAXBException;

import freemind.controller.actions.ActionPair;
import freemind.controller.actions.ActorXml;
import freemind.controller.actions.FreemindAction;
import freemind.controller.actions.generated.instance.AddArrowLinkXmlAction;
import freemind.controller.actions.generated.instance.RemoveArrowLinkXmlAction;
import freemind.controller.actions.generated.instance.XmlAction;
import freemind.main.Tools;
import freemind.modes.MindMapArrowLink;
import freemind.modes.MindMapLink;
import freemind.modes.MindMapLinkRegistry;
import freemind.modes.ModeController;
import freemind.modes.mindmapmode.MindMapArrowLinkModel;

public class RemoveArrowLinkAction extends FreemindAction implements ActorXml {

    private MindMapArrowLinkModel mArrowLink;

    private final ModeController controller;

    /**
     * @param controller
     * @param source
     *            can be null
     * @param arrowLink
     *            can be null.
     */
    public RemoveArrowLinkAction(ModeController controller, MindMapArrowLinkModel arrowLink) {
        super("remove_arrow_link", "images/edittrash.png", controller);
        this.controller = controller;
        setArrowLink(arrowLink);
        if(arrowLink == null) {
            addActor(this);
        }
    }

    public void actionPerformed(ActionEvent e) {
        removeReference(mArrowLink);
    }

    public void removeReference(MindMapLink arrowLink) {
        controller.getActionFactory().startTransaction(
                (String) getValue(NAME));
        controller.getActionFactory().executeAction(
                getActionPair(arrowLink));
        controller.getActionFactory().endTransaction(
                (String) getValue(NAME));    }

    /**
     * @param arrowLink
     * @return
     */
    private ActionPair getActionPair(MindMapLink arrowLink) {
        return new ActionPair(createRemoveArrowLinkXmlAction(arrowLink.getUniqueID()),
                createAddArrowLinkXmlAction(arrowLink));
    }

    /**
     * @return Returns the arrowLink.
     */
    public MindMapArrowLinkModel getArrowLink() {
        return mArrowLink;
    }

    /**
     * @param arrowLink
     *            The arrowLink to set.
     */
    public void setArrowLink(MindMapArrowLinkModel arrowLink) {
        this.mArrowLink = arrowLink;
    }

    public void act(XmlAction action) {
        if (action instanceof RemoveArrowLinkXmlAction) {
            RemoveArrowLinkXmlAction removeAction = (RemoveArrowLinkXmlAction) action;
            MindMapLink arrowLink = getLinkRegistry().getLinkForID(removeAction.getId());
            if(arrowLink == null) {
                // strange: link not found:
                throw new IllegalArgumentException("Unknown link to id "+removeAction.getId()+" should be deleted.");
            }
            getLinkRegistry().deregisterLink(arrowLink);
            controller.nodeChanged(arrowLink.getSource());
            controller.nodeChanged(arrowLink.getTarget());
        }
    }

    public Class getDoActionClass() {
        return RemoveArrowLinkXmlAction.class;
    }

    /**
     * @return
     */
    private MindMapLinkRegistry getLinkRegistry() {
        return controller.getMap().getLinkRegistry();
    }

    public RemoveArrowLinkXmlAction createRemoveArrowLinkXmlAction(String id) {
        try {
            RemoveArrowLinkXmlAction action = controller.getActionXmlFactory().createRemoveArrowLinkXmlAction();
            action.setId(id);
            return action;
        } catch (JAXBException e) {
            e.printStackTrace();
            return null;
        }
    }
    public AddArrowLinkXmlAction createAddArrowLinkXmlAction(MindMapLink link) {
        try {
            AddArrowLinkXmlAction action = controller.getActionXmlFactory()
                    .createAddArrowLinkXmlAction();
            action.setNode(link.getSource().getObjectId(controller));
            action.setDestination(link.getTarget().getObjectId(controller));
            action.setNewId(link.getUniqueID());
            action.setColor(Tools.colorToXml(link.getColor()));
            if (link instanceof MindMapArrowLink) {
                MindMapArrowLink arrowLink = (MindMapArrowLink) link;
                action.setEndArrow(arrowLink.getEndArrow());
                action.setEndInclination(Tools.PointToXml(arrowLink.getEndInclination()));
                action.setStartArrow(arrowLink.getStartArrow());
                action.setStartInclination(Tools.PointToXml(arrowLink.getStartInclination()));
            }
            return action;
        } catch (JAXBException e) {
            e.printStackTrace();
            return null;
        }
    }
    
}