AntMultiPathStringConverter.java

/*
 * Copyright 2000-2010 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.napile.idea.thermit.dom;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import com.intellij.openapi.util.Computable;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiReference;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.util.xml.ConvertContext;
import com.intellij.util.xml.Converter;
import com.intellij.util.xml.CustomReferenceConverter;
import com.intellij.util.xml.GenericAttributeValue;
import com.intellij.util.xml.GenericDomValue;

/**
 * @author Eugene Zhuravlev
 *         Date: May 25, 2010
 */
public class AntMultiPathStringConverter extends Converter<List<File>> implements CustomReferenceConverter<List<File>>
{

	public List<File> fromString(@Nullable @NonNls String s, ConvertContext context)
	{
		final GenericAttributeValue attribValue = context.getInvocationElement().getParentOfType(GenericAttributeValue.class, false);
		if(attribValue == null)
		{
			return null;
		}
		final String path = attribValue.getStringValue();
		if(path == null)
		{
			return null;
		}
		final List<File> result = new ArrayList<File>();
		Computable<String> basedirComputable = null;
		final org.napile.idea.thermit.util.PathTokenizer pathTokenizer = new org.napile.idea.thermit.util.PathTokenizer(path);
		while(pathTokenizer.hasMoreTokens())
		{
			File file = new File(pathTokenizer.nextToken());
			if(!file.isAbsolute())
			{
				if(basedirComputable == null)
				{
					basedirComputable = new Computable<String>()
					{
						final String myBaseDir;

						{
							final AntDomProject antProject = getEffectiveAntProject(attribValue);
							myBaseDir = antProject != null ? antProject.getProjectBasedirPath() : null;
						}

						public String compute()
						{
							return myBaseDir;
						}
					};
				}
				final String baseDir = basedirComputable.compute();
				if(baseDir == null)
				{
					continue;
				}
				file = new File(baseDir, path);
			}
			result.add(file);
		}
		return result;
	}

	private static AntDomProject getEffectiveAntProject(GenericAttributeValue attribValue)
	{
		AntDomProject project = attribValue.getParentOfType(AntDomProject.class, false);
		if(project != null)
		{
			project = project.getContextAntProject();
		}
		return project;
	}

	public String toString(@Nullable List<File> files, ConvertContext context)
	{
		final GenericAttributeValue attribValue = context.getInvocationElement().getParentOfType(GenericAttributeValue.class, false);
		if(attribValue == null)
		{
			return null;
		}
		return attribValue.getRawText();
	}

	@NotNull
	public PsiReference[] createReferences(GenericDomValue<List<File>> genericDomValue, PsiElement element, ConvertContext context)
	{
		final GenericAttributeValue attributeValue = (GenericAttributeValue) genericDomValue;

		final String cpString = genericDomValue.getRawText();
		if(cpString == null || cpString.length() == 0)
		{
			return PsiReference.EMPTY_ARRAY;
		}

		final List<PsiReference> result = new ArrayList<PsiReference>();
		final org.napile.idea.thermit.util.PathTokenizer pathTokenizer = new org.napile.idea.thermit.util.PathTokenizer(cpString);
		int searchFromIndex = 0;
		while(pathTokenizer.hasMoreTokens())
		{
			final String path = pathTokenizer.nextToken();
			if(path.length() > 0)
			{
				final int pathBeginIndex = cpString.indexOf(path, searchFromIndex);
				final AntDomFileReferenceSet refSet = new AntDomFileReferenceSet(attributeValue, path, pathBeginIndex, false);
				ContainerUtil.addAll(result, refSet.getAllReferences());
				searchFromIndex = pathBeginIndex;
			}
		}

		return result.toArray(new PsiReference[result.size()]);
	}
}