MethodExtractor.java

/***** BEGIN LICENSE BLOCK *****
 * 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 Lukas Felber <lfelber@hsr.ch>
 * Copyright (C) 2006 Mirko Stocker <me@misto.ch>
 * Copyright (C) 2006 Thomas Corbat <tcorbat@hsr.ch>
 * 
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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package org.rubypeople.rdt.refactoring.core.extractmethod;

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

import org.jruby.ast.Node;
import org.rubypeople.rdt.refactoring.core.extractconstant.MatchingNodesVisitor;
import org.rubypeople.rdt.refactoring.editprovider.EditProvider;
import org.rubypeople.rdt.refactoring.editprovider.MultiEditProvider;

public class MethodExtractor extends MultiEditProvider {

	private ExtractMethodConfig config;	
	private boolean replaceAll;

	public MethodExtractor(ExtractMethodConfig config) {
		this.config = config;
	}

	@Override
	protected Collection<EditProvider> getEditProviders() {
		Collection<EditProvider> providers = new ArrayList<EditProvider>();

		if (replaceAll) {
			Node selection = config.getSelectedNodes();
			// find nodes that have the same value/match in the same file
			Node rootNode = config.getRootNode();
			MatchingNodesVisitor visitor = new MatchingNodesVisitor(selection, config.getDocumentProvider().getActiveFileContent());
			rootNode.accept(visitor);
			List<Node> matches = visitor.getMatches();
			for (Node node : matches) {
				providers.add(new ExtractedMethodCall(node, config.getExtractMethodHelper().getMethodCallNode(), rootNode));	
			}
		} else {
			providers.add(new ExtractedMethodCall(config));	
		}
		providers.add(new ExtractedMethodDef(config));

		return providers;
	}

	public EditProvider getDefEdit() {
		return new ExtractedMethodDef(config);
	}

	public void setMethodName(String name) {
		config.getHelper().setMethodName(name);
	}

	public ExtractedMethodHelper getExtractedMethod() {
		return config.getHelper();
	}
	
	public void setReplaceAllInstances(boolean selection) {
		this.replaceAll = selection;
	}
}