AntClasspathEntry.java

/*
 * Copyright 2000-2012 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.config.impl;

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

import javax.swing.JComponent;

import org.jdom.Element;
import com.intellij.openapi.fileChooser.FileChooser;
import com.intellij.openapi.fileChooser.FileChooserDescriptor;
import com.intellij.openapi.roots.ui.CellAppearanceEx;
import com.intellij.openapi.util.InvalidDataException;
import com.intellij.openapi.util.NullableFactory;
import com.intellij.openapi.util.WriteExternalException;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.Function;
import com.intellij.util.PathUtil;
import com.intellij.util.config.Externalizer;
import com.intellij.util.containers.ContainerUtil;

public interface AntClasspathEntry
{
	Externalizer<AntClasspathEntry> EXTERNALIZER = new Externalizer<AntClasspathEntry>()
	{
		public AntClasspathEntry readValue(Element dataElement) throws InvalidDataException
		{
			String pathUrl = dataElement.getAttributeValue(SinglePathEntry.PATH);
			if(pathUrl != null)
				return new SinglePathEntry(PathUtil.toPresentableUrl(pathUrl));
			String dirUrl = dataElement.getAttributeValue(AllNZipsUnderDirEntry.DIR);
			if(dirUrl != null)
				return new AllNZipsUnderDirEntry(PathUtil.toPresentableUrl(dirUrl));
			throw new InvalidDataException();
		}

		public void writeValue(Element dataElement, AntClasspathEntry entry) throws WriteExternalException
		{
			entry.writeExternal(dataElement);
		}
	};

	void writeExternal(Element dataElement) throws WriteExternalException;

	void addFilesTo(List<File> files);

	CellAppearanceEx getAppearance();

	abstract class AddEntriesFactory implements NullableFactory<List<AntClasspathEntry>>
	{
		private final JComponent myParentComponent;
		private final FileChooserDescriptor myDescriptor;
		private final Function<VirtualFile, AntClasspathEntry> myMapper;

		public AddEntriesFactory(final JComponent parentComponent, final FileChooserDescriptor descriptor, final Function<VirtualFile, AntClasspathEntry> mapper)
		{
			myParentComponent = parentComponent;
			myDescriptor = descriptor;
			myMapper = mapper;
		}

		public List<AntClasspathEntry> create()
		{
			final VirtualFile[] files = FileChooser.chooseFiles(myDescriptor, myParentComponent, null, null);
			return files.length == 0 ? null : ContainerUtil.map(files, myMapper);
		}
	}
}