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/*
* Copyright 2000-2013 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 com.intellij.uiDesigner;
import com.intellij.ProjectTopics;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.components.ServiceManager;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.module.ModuleUtil;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.*;
import com.intellij.openapi.util.Disposer;
import com.intellij.openapi.vfs.JarFileSystem;
import com.intellij.openapi.vfs.VfsUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileManager;
import com.intellij.openapi.vfs.impl.jar.JarFileSystemImpl;
import com.intellij.uiDesigner.core.Spacer;
import com.intellij.util.PathUtil;
import com.intellij.util.containers.ConcurrentWeakHashMap;
import com.intellij.util.lang.UrlClassLoader;
import com.intellij.util.messages.MessageBusConnection;
import org.jetbrains.annotations.NotNull;
import javax.swing.*;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
/**
* @author Anton Katilin
* @author Vladimir Kondratyev
*/
public final class LoaderFactory {
private final Project myProject;
private final ConcurrentWeakHashMap<Module, ClassLoader> myModule2ClassLoader;
private ClassLoader myProjectClassLoader = null;
private final MessageBusConnection myConnection;
public static LoaderFactory getInstance(final Project project) {
return ServiceManager.getService(project, LoaderFactory.class);
}
public LoaderFactory(final Project project) {
myProject = project;
myModule2ClassLoader = new ConcurrentWeakHashMap<Module, ClassLoader>();
myConnection = myProject.getMessageBus().connect();
myConnection.subscribe(ProjectTopics.PROJECT_ROOTS, new ModuleRootAdapter() {
public void rootsChanged(final ModuleRootEvent event) {
clearClassLoaderCache();
}
});
Disposer.register(project, new Disposable() {
public void dispose() {
myConnection.disconnect();
myModule2ClassLoader.clear();
}
});
}
@NotNull public ClassLoader getLoader(final VirtualFile formFile) {
final Module module = ModuleUtil.findModuleForFile(formFile, myProject);
if (module == null) {
return getClass().getClassLoader();
}
return getLoader(module);
}
public ClassLoader getLoader(final Module module) {
final ClassLoader cachedLoader = myModule2ClassLoader.get(module);
if (cachedLoader != null) {
return cachedLoader;
}
final String runClasspath = OrderEnumerator.orderEntries(module).recursively().getPathsList().getPathsString();
final ClassLoader classLoader = createClassLoader(runClasspath, module.getName());
myModule2ClassLoader.put(module, classLoader);
return classLoader;
}
@NotNull public ClassLoader getProjectClassLoader() {
if (myProjectClassLoader == null) {
final String runClasspath = OrderEnumerator.orderEntries(myProject).withoutSdk().getPathsList().getPathsString();
myProjectClassLoader = createClassLoader(runClasspath, "<project>");
}
return myProjectClassLoader;
}
private static ClassLoader createClassLoader(final String runClasspath, final String moduleName) {
final ArrayList<URL> urls = new ArrayList<URL>();
final VirtualFileManager manager = VirtualFileManager.getInstance();
final JarFileSystemImpl fileSystem = (JarFileSystemImpl)JarFileSystem.getInstance();
final StringTokenizer tokenizer = new StringTokenizer(runClasspath, File.pathSeparator);
while (tokenizer.hasMoreTokens()) {
final String s = tokenizer.nextToken();
try {
VirtualFile vFile = manager.findFileByUrl(VfsUtil.pathToUrl(s));
final File realFile = fileSystem.getMirroredFile(vFile);
urls.add(realFile != null ? realFile.toURI().toURL() : new File(s).toURI().toURL());
}
catch (Exception e) {
// ignore ?
}
}
try {
urls.add(new File(PathUtil.getJarPathForClass(Spacer.class)).toURI().toURL());
}
catch (MalformedURLException ignored) {
// ignore
}
final URL[] _urls = urls.toArray(new URL[urls.size()]);
return new DesignTimeClassLoader(Arrays.asList(_urls), LoaderFactory.class.getClassLoader(), moduleName);
}
public void clearClassLoaderCache() {
// clear classes with invalid classloader from UIManager cache
final UIDefaults uiDefaults = UIManager.getDefaults();
for (Iterator it = uiDefaults.keySet().iterator(); it.hasNext();) {
Object key = it.next();
Object value = uiDefaults.get(key);
if (value instanceof Class) {
ClassLoader loader = ((Class)value).getClassLoader();
if (loader instanceof DesignTimeClassLoader) {
it.remove();
}
}
}
myModule2ClassLoader.clear();
myProjectClassLoader = null;
}
private static class DesignTimeClassLoader extends UrlClassLoader {
private final String myModuleName;
public DesignTimeClassLoader(final List<URL> urls, final ClassLoader parent, final String moduleName) {
super(build().urls(urls).parent(parent));
myModuleName = moduleName;
}
@Override
public String toString() {
return "DesignTimeClassLoader:" + myModuleName;
}
}
}
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