TestProject.java

/*******************************************************************************
 * Copyright (c) 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     Erich Gamma (erich_gamma@ch.ibm.com) and
 * 	   Kent Beck (kent@threeriversinstitute.org)
 *******************************************************************************/
/*******************************************************************************
 * Erich Gamma???Kent Beck??? ??????????????????
 * Eclipse????????????????????????Contributing to eclipse???
 * ?????????????????????
 * ??????????????????????????????Erich Gamma??????Kent Beck???????????????
 *******************************************************************************/

package org.eclipse.contribution.junit.javadoc.test;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.search.IJavaSearchConstants;
import org.eclipse.jdt.core.search.SearchEngine;
import org.eclipse.jdt.core.search.SearchPattern;
import org.eclipse.jdt.core.search.TypeNameRequestor;
import org.eclipse.jdt.launching.JavaRuntime;

public class TestProject {
	private IProject project;

	private IJavaProject javaProject;

	private IPackageFragmentRoot sourceFolder;

	public TestProject() throws CoreException {
		IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
		project = root.getProject("TestProject");
		project.create(null);
		project.open(null);
		javaProject = JavaCore.create(project);

		IFolder binFolder = createBinFolder();

		setJavaNature();
		javaProject.setRawClasspath(new IClasspathEntry[0], null);

		createOutputFolder(binFolder);
		addSystemLibraries();
	}

	public IProject getProject() {
		return project;
	}

	public IJavaProject getJavaProject() {
		return javaProject;
	}

	public void addJar(String plugin, String jar) throws MalformedURLException,
			IOException, JavaModelException {
		Path result = findFileInPlugin(plugin, jar);
		IClasspathEntry[] oldEntries = javaProject.getRawClasspath();
		IClasspathEntry[] newEntries = new IClasspathEntry[oldEntries.length + 1];
		System.arraycopy(oldEntries, 0, newEntries, 0, oldEntries.length);
		newEntries[oldEntries.length] = JavaCore.newLibraryEntry(result, null,
				null);
		javaProject.setRawClasspath(newEntries, null);
	}

	public IPackageFragment createPackage(String name) throws CoreException {
		if (sourceFolder == null)
			sourceFolder = createSourceFolder();
		return sourceFolder.createPackageFragment(name, false, null);
	}
	
	public IPackageFragment getPackage(String packageName) throws CoreException{
		if (sourceFolder == null)
			return createPackage(packageName);
		return sourceFolder.getPackageFragment(packageName);
	}

	public IType createType(IPackageFragment pack, String cuName, String source)
			throws JavaModelException {
		StringBuilder buf = new StringBuilder();
		buf.append("package " + pack.getElementName() + ";\n");
		buf.append("\n");
		buf.append(source);
		IProgressMonitor monitor = new NullProgressMonitor();
		ICompilationUnit cu = pack.createCompilationUnit(cuName,
				buf.toString(), false, monitor);
		return cu.getTypes()[0];
	}

	public void dispose() throws CoreException {
		waitForIndexer();
		project.delete(true, true, null);
	}

	private IFolder createBinFolder() throws CoreException {
		IFolder binFolder = project.getFolder("bin");
		binFolder.create(false, true, null);
		return binFolder;
	}

	private void setJavaNature() throws CoreException {
		IProjectDescription description = project.getDescription();
		description.setNatureIds(new String[] { JavaCore.NATURE_ID });
		project.setDescription(description, null);
	}

	private void createOutputFolder(IFolder binFolder)
			throws JavaModelException {
		IPath outputLocation = binFolder.getFullPath();
		javaProject.setOutputLocation(outputLocation, null);
	}

	private IPackageFragmentRoot createSourceFolder() throws CoreException {
		IFolder folder = project.getFolder("src");
		folder.create(false, true, null);
		IPackageFragmentRoot root = javaProject.getPackageFragmentRoot(folder);

		IClasspathEntry[] oldEntries = javaProject.getRawClasspath();
		IClasspathEntry[] newEntries = new IClasspathEntry[oldEntries.length + 1];
		System.arraycopy(oldEntries, 0, newEntries, 0, oldEntries.length);
		newEntries[oldEntries.length] = JavaCore.newSourceEntry(root.getPath());
		javaProject.setRawClasspath(newEntries, null);
		return root;
	}

	private void addSystemLibraries() throws JavaModelException {
		IClasspathEntry[] oldEntries = javaProject.getRawClasspath();
		IClasspathEntry[] newEntries = new IClasspathEntry[oldEntries.length + 1];
		System.arraycopy(oldEntries, 0, newEntries, 0, oldEntries.length);
		newEntries[oldEntries.length] = JavaRuntime
				.getDefaultJREContainerEntry();
		javaProject.setRawClasspath(newEntries, null);
	}

	private Path findFileInPlugin(String plugin, String file)
			throws MalformedURLException, IOException {
		URL pluginURL = Platform.getBundle(plugin).getEntry("/");
		URL jarURL = new URL(pluginURL, file);
		URL localJarURL = FileLocator.toFileURL(jarURL);
		return new Path(localJarURL.getPath());

	}

	private void waitForIndexer() throws JavaModelException {
		TypeNameRequestor nameRequestor = new TypeNameRequestor(){};
		new SearchEngine().searchAllTypeNames(
				null,
				SearchPattern.R_EXACT_MATCH,
				null,
				SearchPattern.R_EXACT_MATCH,
				IJavaSearchConstants.CLASS,
				SearchEngine.createJavaSearchScope(new IJavaElement[0]),
				nameRequestor,
				IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH,
				null);
	}
}