RenameClassConditionChecker.java

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 * Version: CPL 1.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Common Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/cpl-v10.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
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 * Copyright (C) 2006 Mirko Stocker <me@misto.ch>
 * 
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package org.rubypeople.rdt.refactoring.core.renameclass;

import org.jruby.ast.ClassNode;
import org.rubypeople.rdt.refactoring.core.IRefactoringConfig;
import org.rubypeople.rdt.refactoring.core.RefactoringConditionChecker;
import org.rubypeople.rdt.refactoring.core.SelectionNodeProvider;
import org.rubypeople.rdt.refactoring.documentprovider.DocumentWithIncluding;
import org.rubypeople.rdt.refactoring.exception.NoClassNodeException;
import org.rubypeople.rdt.refactoring.nodewrapper.ClassNodeWrapper;
import org.rubypeople.rdt.refactoring.util.NodeUtil;

public class RenameClassConditionChecker extends RefactoringConditionChecker {

	public static final String DEFAULT_ERROR = Messages.RenameClassConditionChecker_PleaseSelectNameOfAClassDeclaration;
	private RenameClassConfig config;

	public RenameClassConditionChecker(RenameClassConfig config) {
		super(config);
	}

	@Override
	public void init(IRefactoringConfig configObj) {
		config = (RenameClassConfig) configObj;
		config.setDocumentWithIncludingProvider(new DocumentWithIncluding(config.getDocumentProvider()));
		ClassNodeWrapper classNode = null;
		try {
			classNode = SelectionNodeProvider.getSelectedClassNode(config.getDocumentProvider().getActiveFileRootNode(), config.getOffset());
			if(!NodeUtil.positionIsInNode(config.getOffset(), ((ClassNode) classNode.getWrappedNode()).getCPath())) {
				return;
			}
		} catch (NoClassNodeException e) {return;}
		
		String modulePrefix = classNode.getFirstPartialClassNode().getModulePrefix();
		if("".equals(modulePrefix)) {
			config.setModulePrefix("");
		} else {
			config.setModulePrefix(modulePrefix + "::");
		}
		config.setSelectedNode((ClassNode) classNode.getFirstPartialClassNode().getWrappedNode());
		config.setNewName(classNode.getName());
	}


	@Override
	protected void checkInitialConditions() {
		if (config.getSelectedNode() == null) {
			addError(DEFAULT_ERROR);
		}
	}
}