InsertEditProvider.java

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 * Copyright (C) 2006 Lukas Felber <lfelber@hsr.ch>
 * 
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package org.rubypeople.rdt.refactoring.editprovider;

import org.eclipse.text.edits.InsertEdit;
import org.eclipse.text.edits.TextEdit;
import org.jruby.ast.Node;
import org.rubypeople.rdt.refactoring.util.Constants;

public abstract class InsertEditProvider extends EditProvider {

	public static final int INSERT_AFTER_EXISTING_NODE = 0;

	public static final int INSERT_AT_BEGIN_OF_LINE = 1;

	private static final int DEFAULT_INSERT_TYPE = INSERT_AFTER_EXISTING_NODE;

	private int insertType;

	public InsertEditProvider(boolean doFormat) {
		super(doFormat, false);
		insertType = DEFAULT_INSERT_TYPE;
	}

	public TextEdit getEdit(String document) {
		String formatedNode = getFormatedNode(document);
		StringBuilder formatedText = new StringBuilder();
		if (insertType == INSERT_AFTER_EXISTING_NODE)
			formatedText.append(Constants.NL);
		formatedText.append(formatedNode);
		if (insertType == INSERT_AT_BEGIN_OF_LINE) {
			formatedText.append(Constants.NL);
		}
		return new InsertEdit(getOffset(document), formatedText.toString());
	}

	public void setInsertType(int insertType) {
		this.insertType = insertType;
	}

	protected abstract Node getInsertNode(int offset, String document);

	protected Node getEditNode(int offset, String document) {
		return getInsertNode(offset, document);
	}
}