deletechildaction.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 05.05.2004
 */
/*$Id: DeleteChildAction.java,v 1.1.4.5 2005/02/02 22:16:21 christianfoltin Exp $*/

package freemind.modes.actions;

import java.awt.datatransfer.Transferable;
import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.ImageIcon;
import javax.xml.bind.JAXBException;

import freemind.controller.actions.ActionPair;
import freemind.controller.actions.ActorXml;
import freemind.controller.actions.generated.instance.DeleteNodeAction;
import freemind.controller.actions.generated.instance.PasteNodeAction;
import freemind.controller.actions.generated.instance.XmlAction;
import freemind.extensions.PermanentNodeHook;
import freemind.modes.ControllerAdapter;
import freemind.modes.MindMapNode;
import freemind.modes.NodeAdapter;
import freemind.modes.actions.PasteAction.NodeCoordinate;


public class DeleteChildAction extends AbstractAction implements ActorXml {
    private final ControllerAdapter c;
    private String text;
    public DeleteChildAction(ControllerAdapter modeController) {
        super(modeController.getText("remove_node"), new ImageIcon(
                modeController.getResource("images/editdelete.png")));
		text = modeController.getText("remove_node");
        this.c = modeController;
		this.c.getActionFactory().registerActor(this, getDoActionClass());
    }

    public void actionPerformed(ActionEvent e) {
        // because of multiple selection, cut is better.
    	c.cut();
       //this.c.deleteNode(c.getSelected());
    }
    /* (non-Javadoc)
     * @see freemind.controller.actions.ActorXml#act(freemind.controller.actions.generated.instance.XmlAction)
     */
    public void act(XmlAction action) {
		DeleteNodeAction deleteNodeAction = (DeleteNodeAction) action;
		MindMapNode selectedNode = this.c.getNodeFromID(deleteNodeAction.getNode());
		deleteWithoutUndo(selectedNode);
    }
    /**
     * @param selectedNode
     */
    public void deleteWithoutUndo(MindMapNode selectedNode) {
        // deregister node:
		c.getModel().getLinkRegistry().deregisterLinkTarget(selectedNode);
        // remove hooks:
		long currentRun = 0;
		// determine timeout:
		long timeout = selectedNode.getActivatedHooks().size() * 2 + 2;
        while(selectedNode.getActivatedHooks().size() > 0) {
            PermanentNodeHook hook = (PermanentNodeHook) selectedNode.getActivatedHooks().iterator().next();
            selectedNode.removeHook(hook);
            if(currentRun++ > timeout) {
                throw new IllegalStateException("Timeout reached shutting down the hooks.");
            }
        }
		c.getModel().removeNodeFromParent( selectedNode);
    }

    /* (non-Javadoc)
     * @see freemind.controller.actions.ActorXml#getDoActionClass()
     */
    public Class getDoActionClass() {
        return DeleteNodeAction.class;
    }
    
	public void deleteNode(MindMapNode selectedNode){
		try {
			String newId = c.getNodeID(selectedNode);
			c.getActionFactory().startTransaction(text);
			MindMapNode parent = selectedNode.getParentNode();

			Transferable copy = c.getModel().copy(selectedNode);
			NodeCoordinate coord = new NodeCoordinate(selectedNode, selectedNode.isLeft().getValue());
			// Undo-action
			PasteNodeAction pasteNodeAction=null;
            pasteNodeAction = c.paste.getPasteNodeAction(copy, coord);

			DeleteNodeAction deleteAction = getDeleteNodeAction(newId);
			c.getActionFactory().executeAction(new ActionPair(deleteAction, pasteNodeAction));
			c.getActionFactory().endTransaction(text);
		} catch (JAXBException e) {
			e.printStackTrace();
		}
	}

	public DeleteNodeAction getDeleteNodeAction(String newId)
		throws JAXBException {
		DeleteNodeAction deleteAction = c.getActionXmlFactory().createDeleteNodeAction();
		deleteAction.setNode(newId);
		return deleteAction;
	}


}