undomanager.java

一个eclipse插件源代码。用于web开发

/*
 * $Header: /home/cvs/WEBPUMP2.0/WebPumpIDE_Src/WebPumpIDE/src/com/webpump/ui/module/model/UndoManager.java,v 1.1.1.1 2004/07/01 09:07:50 wang_j Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/07/01 09:07:50 $
 *
 * ====================================================================
 *
 * The NanJing HopeRun(IT-FOREST) Software License, Version 2.0.0
 *
 * Copyright 2003-2004 by NanJing HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and
 *                        IT Forest Corporation
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of
 * HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and IT Forest Corporation.
 * You shall not disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into with
 * HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and IT Forest Corporation.
 */
package com.webpump.ui.module.model;

import org.eclipse.pde.internal.ui.editor.PDEMultiPageEditor;

import com.webpump.ui.base.data.BaseDataObject;
import com.webpump.ui.base.data.BaseObject;
import com.webpump.ui.base.gui.BaseUndoManager;

/**
 * Class for undo manager
 * 
 * @author shi_l
 * @version 2.0.0 2004-2-19
 */
public class UndoManager extends BaseUndoManager {

	public UndoManager(PDEMultiPageEditor editor) {
		super(editor);
	}
/*    protected void execute(IModelChangedEvent event, boolean undo) {
        Object[] elements = event.getChangedObjects();
        int type = event.getChangeType();
        String propertyName = event.getChangedProperty();

        switch (type) {
            case IModelChangedEvent.INSERT :
                if (undo)
                    executeRemove(elements);
                else
                    executeAdd(elements);
                break;
            case IModelChangedEvent.REMOVE :
                if (undo) {             
                    executeAdd(elements);
                    operations.remove(operations.size() - 1);
                }
                else
                    executeRemove(elements);
                break;
            case IModelChangedEvent.CHANGE :
                if (event instanceof AttributeChangedEvent) {
                    executeAttributeChange((AttributeChangedEvent) event, undo);
                } else {
                    if (undo)
                        executeChange(
                            elements[0],
                            propertyName,
                            event.getNewValue(),
                            event.getOldValue());
                    else
                        executeChange(
                            elements[0],
                            propertyName,
                            event.getOldValue(),
                            event.getNewValue());
                }
        }
    }*/
/*	private void executeAdd(Object[] elements) {

		if (elements instanceof BaseObject[]) {
			BaseDataObject objParent = (BaseDataObject) ((BaseObject) elements[0]).getParent();
			objParent.add(elements);
		}
	}
*/
	private void executeRemove(Object[] elements) {

		if (elements instanceof BaseObject[]) {
			BaseDataObject objParent = (BaseDataObject) ((BaseObject) elements[0]).getParent();
			objParent.remove(elements);
		}
	}
}