xml/impl/src/com/intellij/xml/index/ExternalResourcesRootsProvider.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 package com.intellij.xml.index;
  17
  18 import com.intellij.codeInsight.daemon.impl.quickfix.FetchExtResourceAction;
  19 import com.intellij.javaee.ExternalResourceManagerImpl;
  20 import com.intellij.openapi.vfs.LocalFileSystem;
  21 import com.intellij.openapi.vfs.VfsUtil;
  22 import com.intellij.openapi.vfs.VirtualFile;
  23 import com.intellij.util.containers.hash.HashSet;
  24 import com.intellij.util.indexing.IndexedRootsProvider;
  25 import org.jetbrains.annotations.Nullable;
  26
  27 import java.net.URL;
  28 import java.util.Set;
  29
  30 /**
  31  * @author Dmitry Avdeev
  32  */
  33 public class ExternalResourcesRootsProvider implements IndexedRootsProvider {
  34
  35   @Nullable
  36   public static VirtualFile getStandardSchemas() {
  37     final URL resource = ExternalResourcesRootsProvider.class.getResource(ExternalResourceManagerImpl.STANDARD_SCHEMAS);
  38     return resource == null ? null : VfsUtil.findFileByURL(resource);
  39   }
  40
  41   public Set<String> getRootsToIndex() {
  42     final VirtualFile standardSchemas = getStandardSchemas();
  43     String path = FetchExtResourceAction.getExternalResourcesPath();
  44     LocalFileSystem localFileSystem = LocalFileSystem.getInstance();
  45     VirtualFile extResources = localFileSystem.findFileByPath(path);
  46     HashSet<String> roots = new HashSet<String>(2);
  47     roots.add(standardSchemas.getUrl());
  48     if (extResources != null) {
  49       roots.add(extResources.getUrl());
  50     }
  51     return roots;
  52   }
  53 }