Copyright (c) 2000, 2009 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2000, 2009 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.core.dom.rewrite;



/**
 *
 */
public class NodeRewriteEvent extends RewriteEvent {

	private Object originalValue;
	private Object newValue;

	public NodeRewriteEvent(Object originalValue, Object newValue) {
		this.originalValue= originalValue;
		this.newValue= newValue;
	}

	
Returns:
Returns the new value./**
	 * @return Returns the new value.
	 */
	@Override
	public Object getNewValue() {
		return this.newValue;
	}

	
Returns:
Returns the original value./**
	 * @return Returns the original value.
	 */
	@Override
	public Object getOriginalValue() {
		return this.originalValue;
	}

	@Override
	public int getChangeKind() {
		if (this.originalValue == this.newValue) {
			return UNCHANGED;
		}
		if (this.originalValue == null) {
			return INSERTED;
		}
		if (this.newValue == null) {
			return REMOVED;
		}
		if (this.originalValue.equals(this.newValue)) {
			return UNCHANGED;
		}
		return REPLACED;
	}

	@Override
	public boolean isListRewrite() {
		return false;
	}

	/*
	 * Sets a new value for the new node. Internal access only.
	 * @param newValue The new value to set.
	 */
	public void setNewValue(Object newValue) {
		this.newValue= newValue;
	}

	@Override
	public RewriteEvent[] getChildren() {
		return null;
	}

	@Override
	public String toString() {
		StringBuffer buf= new StringBuffer();
		switch (getChangeKind()) {
		case INSERTED:
			buf.append(" [inserted: "); //$NON-NLS-1$
			buf.append(getNewValue());
			buf.append(']');
			break;
		case REPLACED:
			buf.append(" [replaced: "); //$NON-NLS-1$
			buf.append(getOriginalValue());
			buf.append(" -> "); //$NON-NLS-1$
			buf.append(getNewValue());
			buf.append(']');
			break;
		case REMOVED:
			buf.append(" [removed: "); //$NON-NLS-1$
			buf.append(getOriginalValue());
			buf.append(']');
			break;
		default:
			buf.append(" [unchanged]"); //$NON-NLS-1$
		}
		return buf.toString();
	}


}