| /* |
| * Copyright 2000-2009 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.psi.impl; |
| |
| import com.intellij.ProjectTopics; |
| import com.intellij.openapi.module.Module; |
| import com.intellij.openapi.module.ModuleManager; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.roots.*; |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.psi.search.GlobalSearchScope; |
| import com.intellij.util.SmartList; |
| import com.intellij.util.containers.MultiMap; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.jps.model.java.JavaModuleSourceRootTypes; |
| |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * @author peter |
| */ |
| public class PackagePrefixIndex { |
| private static final Object LOCK = new Object(); |
| private MultiMap<String, Module> myMap; |
| private final Project myProject; |
| |
| public PackagePrefixIndex(Project project) { |
| myProject = project; |
| project.getMessageBus().connect(project).subscribe(ProjectTopics.PROJECT_ROOTS, new ModuleRootAdapter() { |
| @Override |
| public void rootsChanged(final ModuleRootEvent event) { |
| synchronized (LOCK) { |
| myMap = null; |
| } |
| } |
| }); |
| } |
| |
| public Collection<String> getAllPackagePrefixes(@Nullable GlobalSearchScope scope) { |
| MultiMap<String, Module> map = myMap; |
| if (map != null) { |
| return getAllPackagePrefixes(scope, map); |
| } |
| |
| map = new MultiMap<String, Module>(); |
| for (final Module module : ModuleManager.getInstance(myProject).getModules()) { |
| for (final ContentEntry entry : ModuleRootManager.getInstance(module).getContentEntries()) { |
| for (final SourceFolder folder : entry.getSourceFolders(JavaModuleSourceRootTypes.SOURCES)) { |
| final String prefix = folder.getPackagePrefix(); |
| if (StringUtil.isNotEmpty(prefix)) { |
| map.putValue(prefix, module); |
| } |
| } |
| } |
| } |
| |
| synchronized (LOCK) { |
| if (myMap == null) { |
| myMap = map; |
| } |
| return getAllPackagePrefixes(scope, myMap); |
| } |
| } |
| |
| private static Collection<String> getAllPackagePrefixes(final GlobalSearchScope scope, final MultiMap<String, Module> map) { |
| if (scope == null) return map.keySet(); |
| |
| List<String> result = new SmartList<String>(); |
| for (final String prefix : map.keySet()) { |
| modules: for (final Module module : map.get(prefix)) { |
| if (scope.isSearchInModuleContent(module)) { |
| result.add(prefix); |
| break modules; |
| } |
| } |
| } |
| return result; |
| } |
| } |