platform/lang-impl/src/com/intellij/util/LogicalRootsManagerImpl.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package com.intellij.util;
  18
  19 import com.intellij.ProjectTopics;
  20 import com.intellij.openapi.fileTypes.FileType;
  21 import com.intellij.openapi.module.Module;
  22 import com.intellij.openapi.module.ModuleManager;
  23 import com.intellij.openapi.module.ModuleUtil;
  24 import com.intellij.openapi.project.Project;
  25 import com.intellij.openapi.roots.ModuleRootEvent;
  26 import com.intellij.openapi.roots.ModuleRootListener;
  27 import com.intellij.openapi.roots.ModuleRootManager;
  28 import com.intellij.openapi.util.MultiValuesMap;
  29 import com.intellij.openapi.vfs.VfsUtil;
  30 import com.intellij.openapi.vfs.VirtualFile;
  31 import com.intellij.util.containers.ContainerUtil;
  32 import com.intellij.util.messages.MessageBus;
  33 import com.intellij.util.messages.MessageBusConnection;
  34 import gnu.trove.THashMap;
  35 import org.jetbrains.annotations.NotNull;
  36 import org.jetbrains.annotations.Nullable;
  37
  38 import java.util.*;
  39
  40 /**
  41  * @author spleaner
  42  */
  43 public class LogicalRootsManagerImpl extends LogicalRootsManager {
  44   private Map<Module, MultiValuesMap<LogicalRootType, LogicalRoot>> myRoots = null;
  45   private final MultiValuesMap<LogicalRootType, NotNullFunction> myProviders = new MultiValuesMap<LogicalRootType, NotNullFunction>();
  46   private final MultiValuesMap<FileType, LogicalRootType> myFileTypes2RootTypes = new MultiValuesMap<FileType, LogicalRootType>();
  47   private final ModuleManager myModuleManager;
  48   private final Project myProject;
  49
  50   public LogicalRootsManagerImpl(final MessageBus bus, final ModuleManager moduleManager, final Project project) {
  51     myModuleManager = moduleManager;
  52     myProject = project;
  53
  54     final MessageBusConnection connection = bus.connect();
  55     connection.subscribe(ProjectTopics.LOGICAL_ROOTS, new LogicalRootListener() {
  56       public void logicalRootsChanged() {
  57         clear();
  58         //updateCache(moduleManager);
  59       }
  60     });
  61     connection.subscribe(ProjectTopics.PROJECT_ROOTS, new ModuleRootListener() {
  62       public void beforeRootsChange(ModuleRootEvent event) {
  63       }
  64
  65       public void rootsChanged(ModuleRootEvent event) {
  66         bus.asyncPublisher(ProjectTopics.LOGICAL_ROOTS).logicalRootsChanged();
  67       }
  68     });
  69     registerLogicalRootProvider(LogicalRootType.SOURCE_ROOT, new NotNullFunction<Module, List<VirtualFileLogicalRoot>>() {
  70       @NotNull
  71       public List<VirtualFileLogicalRoot> fun(final Module module) {
  72         return ContainerUtil.map2List(ModuleRootManager.getInstance(module).getSourceRoots(), new Function<VirtualFile, VirtualFileLogicalRoot>() {
  73           public VirtualFileLogicalRoot fun(final VirtualFile s) {
  74             return new VirtualFileLogicalRoot(s);
  75           }
  76         });
  77       }
  78     });
  79   }
  80
  81   private synchronized void clear() {
  82     myRoots = null;
  83   }
  84
  85   private synchronized  Map<Module, MultiValuesMap<LogicalRootType, LogicalRoot>> getRoots(final ModuleManager moduleManager) {
  86     if (myRoots == null) {
  87       myRoots = new THashMap<Module, MultiValuesMap<LogicalRootType, LogicalRoot>>();
  88
  89       final Module[] modules = moduleManager.getModules();
  90       for (Module module : modules) {
  91         final MultiValuesMap<LogicalRootType, LogicalRoot> map = new MultiValuesMap<LogicalRootType, LogicalRoot>();
  92         for (Map.Entry<LogicalRootType, Collection<NotNullFunction>> entry : myProviders.entrySet()) {
  93           final Collection<NotNullFunction> functions = entry.getValue();
  94           for (NotNullFunction function : functions) {
  95             map.putAll(entry.getKey(), (List<LogicalRoot>) function.fun(module));
  96           }
  97         }
  98         myRoots.put(module, map);
  99       }
 100     }
 101
 102     return myRoots;
 103   }
 104
 105   @Nullable
 106   public LogicalRoot findLogicalRoot(@NotNull final VirtualFile file) {
 107     final Module module = ModuleUtil.findModuleForFile(file, myProject);
 108     if (module == null) return null;
 109
 110     LogicalRoot result = null;
 111     final List<LogicalRoot> list = getLogicalRoots(module);
 112     for (final LogicalRoot root : list) {
 113       final VirtualFile rootFile = root.getVirtualFile();
 114       if (rootFile != null && VfsUtil.isAncestor(rootFile, file, false)) {
 115         result = root;
 116         break;
 117       }
 118     }
 119
 120     return result;
 121   }
 122
 123   public List<LogicalRoot> getLogicalRoots() {
 124     return ContainerUtil.concat(myModuleManager.getModules(), new Function<Module, Collection<? extends LogicalRoot>>() {
 125       public Collection<? extends LogicalRoot> fun(final Module module) {
 126         return getLogicalRoots(module);
 127       }
 128     });
 129   }
 130
 131   public List<LogicalRoot> getLogicalRoots(@NotNull final Module module) {
 132     final Map<Module, MultiValuesMap<LogicalRootType, LogicalRoot>> roots = getRoots(myModuleManager);
 133     final MultiValuesMap<LogicalRootType, LogicalRoot> valuesMap = roots.get(module);
 134     if (valuesMap == null) {
 135       return Collections.emptyList();
 136     }
 137     return new ArrayList<LogicalRoot>(valuesMap.values());
 138   }
 139
 140   public List<LogicalRoot> getLogicalRootsOfType(@NotNull final Module module, @NotNull final LogicalRootType... types) {
 141     return ContainerUtil.concat(types, new Function<LogicalRootType, Collection<? extends LogicalRoot>>() {
 142       public Collection<? extends LogicalRoot> fun(final LogicalRootType s) {
 143         return getLogicalRootsOfType(module, s);
 144       }
 145     });
 146   }
 147
 148   public <T extends LogicalRoot> List<T> getLogicalRootsOfType(@NotNull final Module module, @NotNull final LogicalRootType<T> type) {
 149     final Map<Module, MultiValuesMap<LogicalRootType, LogicalRoot>> roots = getRoots(myModuleManager);
 150     final MultiValuesMap<LogicalRootType, LogicalRoot> map = roots.get(module);
 151     if (map == null) {
 152       return Collections.emptyList();
 153     }
 154
 155     Collection<LogicalRoot> collection = map.get(type);
 156     if (collection == null) return Collections.emptyList();
 157     return new ArrayList<T>((Collection<T>)collection);
 158   }
 159
 160   @NotNull
 161   public LogicalRootType[] getRootTypes(@NotNull final FileType type) {
 162     final Collection<LogicalRootType> rootTypes = myFileTypes2RootTypes.get(type);
 163     if (rootTypes == null) {
 164       return new LogicalRootType[0];
 165     }
 166
 167     return rootTypes.toArray(new LogicalRootType[rootTypes.size()]);
 168   }
 169
 170   public void registerRootType(@NotNull final FileType fileType, @NotNull final LogicalRootType... rootTypes) {
 171     myFileTypes2RootTypes.putAll(fileType, rootTypes);
 172   }
 173
 174   public <T extends LogicalRoot> void registerLogicalRootProvider(@NotNull final LogicalRootType<T> rootType, @NotNull NotNullFunction<Module, List<T>> provider) {
 175     myProviders.put(rootType, provider);
 176     clear();
 177   }
 178 }