org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/launcher/SourceElementQualifierProvider.java

/*******************************************************************************
 * Copyright (c) 2000, 2020 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.debug.ui.launcher;


import java.io.File;
import java.io.IOException;
import java.util.zip.ZipFile;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.debug.core.sourcelookup.containers.LocalFileStorage;
import org.eclipse.debug.core.sourcelookup.containers.ZipEntryStorage;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.launching.IRuntimeClasspathEntry;
import org.eclipse.jdt.launching.JavaRuntime;
import org.eclipse.jdt.ui.JavaElementLabelProvider;
import org.eclipse.jdt.ui.JavaUI;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;

/**
 * A label provider for source element qualifiers found with a JavaSourceLocator
 */
public class SourceElementQualifierProvider extends LabelProvider implements ILabelProvider {

	private JavaElementLabelProvider fJavaLabels;

	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
	 */
	@Override
	public String getText(Object element) {
		if (element instanceof IJavaElement) {
			IJavaElement parent = ((IJavaElement)element).getParent();
			return fJavaLabels.getText(parent);
		} else if (element instanceof ZipEntryStorage) {
			ZipEntryStorage storage = (ZipEntryStorage)element;
			try (ZipFile archive = storage.getArchive()) {
				String zipFileName = archive.getName();
				IPath path = new Path(zipFileName);
				IRuntimeClasspathEntry entry = JavaRuntime.newArchiveRuntimeClasspathEntry(path);
				IResource res = entry.getResource();
				if (res == null) {
					// external
					return zipFileName;
				}
				// internal
				return res.getName();
			} catch (IOException e) {
				e.printStackTrace();
			}
			// ZipFile archive = storage.getArchive();
			// String zipFileName = archive.getName();

		} else if (element instanceof LocalFileStorage) {
			LocalFileStorage storage = (LocalFileStorage)element;
			File extFile = storage.getFile();
			return extFile.getParent();
		}
		return super.getText(element);
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
	 */
	@Override
	public Image getImage(Object element) {
		if (element instanceof IJavaElement) {
			IJavaElement parent = ((IJavaElement)element).getParent();
			return fJavaLabels.getImage(parent);
		} else if (element instanceof ZipEntryStorage) {
            return JavaUI.getSharedImages().getImage(org.eclipse.jdt.ui.ISharedImages.IMG_OBJS_JAR_WITH_SOURCE);
		} else if (element instanceof LocalFileStorage) {
			return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FOLDER);
		}
		return super.getImage(element);
	}

	/**
	 * Constructs a new label provider
	 */
	public SourceElementQualifierProvider() {
		super();
		fJavaLabels = new JavaElementLabelProvider();
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
	 */
	@Override
	public void dispose() {
		super.dispose();
		fJavaLabels.dispose();
		fJavaLabels = null;
	}
}