ServiceRenamePaticipant.java example

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ares-studio-master
package com.hundsun.ares.studio.jres.service.ui.refactor;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.ltk.core.refactoring.Change;
import org.eclipse.ltk.core.refactoring.CompositeChange;

import com.hundsun.ares.studio.biz.constants.IBizResType;
import com.hundsun.ares.studio.core.IARESModule;
import com.hundsun.ares.studio.core.IARESResource;
import com.hundsun.ares.studio.ui.refactoring.AresElementRenameParicipant;

public class ServiceRenamePaticipant extends AresElementRenameParicipant {

	/// Ϊʲôʹ��PreChange:
	/// ����������һ��ģ��, �����ģ���Ѿ��������,��ô���ģ���µ���Դ�൱�ڱ��ƶ�����, 
	/// ����֮ǰ������Change�����޷���ȷִ����.
	/// �������������ģ��A,��ģ��A�µ�������Դ��������PreChange; 
	/// ��ô�������е���Դͳһ����Prechange��.
	@Override
	public Change createPreChange(IProgressMonitor pm) throws CoreException,	OperationCanceledException {
		if (!getArguments().getUpdateReferences()) {
			return null;
		}
		String newName = getArguments().getNewName();
		if (element instanceof IARESModule) {
			IARESModule module = (IARESModule) element;
			IARESModule parentModule = module.getParentModule();
			String newModuleName = null;
			if (parentModule != null) {
				newModuleName = parentModule.getElementName() + "." + newName;
			} else {
				newModuleName = newName;
			}
			return createChange(module, newModuleName);
		} else if (element instanceof IARESResource) { 	// �˴�û���ٽ����ж���Դ���ͣ���Ϊ��plugin.xml���Ѿ����ж�, Object���������Żᴥ�����,���Բ����ظ��ж�
			IARESResource res = (IARESResource) element;
			IARESModule module = res.getModule();
			String newRefName = module.getElementName() + "." + newName;
			List<Change> changes = ServiceRefactorUtil.createChanges(res, newRefName);
			if (!changes.isEmpty())
				return new CompositeChange("������������б��еĶ������͵Ĳ������ø���", changes.toArray(new Change[0]));
			return null;
		}
		return null;
	}
	
	@Override
	public Change createChange(IProgressMonitor pm) throws CoreException, OperationCanceledException {
		return null;
	}
	
	private Change createChange(IARESModule module, String newName) {
		List<Change> changes = new ArrayList<Change>();
		IARESResource[] objects = module.getARESResources(IBizResType.Object, true);
		// ��Щ����ȫ���ᱻ�ı�Ķ���
		for (IARESResource object : objects) {
			String newObjName = newName + "." + object.getName();
			changes.addAll(ServiceRefactorUtil.createChanges(object, newObjName));
		}
		if (!changes.isEmpty())
			return new CompositeChange("������������б��еĶ������͵Ĳ������ø���", changes.toArray(new Change[0]));
		else 
			return null;
	}
	
}