/*
 * Copyright 2000-2016 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.jetbrains.python;

import com.google.common.collect.Lists;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.ModuleRootModel;
import com.intellij.openapi.roots.ProjectRootManager;
import com.intellij.openapi.roots.impl.DirectoryIndexExcludePolicy;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.pointers.VirtualFilePointer;
import org.jetbrains.annotations.NotNull;

import java.util.List;

/**
 * @author traff
 */
public class PyDirectoryIndexExcludePolicy implements DirectoryIndexExcludePolicy {
  
  private final Project myProject;

  public PyDirectoryIndexExcludePolicy(@NotNull  Project project) {
    myProject = project;
  }

  @NotNull
  @Override
  public VirtualFile[] getExcludeRootsForProject() {
    List<VirtualFile> result = Lists.newArrayList();
    for (VirtualFile root: ProjectRootManager.getInstance(myProject).getContentRoots()) {
      VirtualFile file = root.findChild(".tox");
      if (file != null) {
        result.add(file);
      }
    }
    
    return result.toArray(new VirtualFile[result.size()]);
  }

  @NotNull
  @Override
  public VirtualFilePointer[] getExcludeRootsForModule(@NotNull ModuleRootModel rootModel) {
    
    
    return VirtualFilePointer.EMPTY_ARRAY;
  }
}

@@ -697,23 +697,162 @@
 api.
-project.Project
+module.Module;%0Aimport com.intellij.openapi.module.ModuleManager;%0Aimport com.intellij.openapi.project.Project;%0Aimport com.intellij.openapi.projectRoots.Sdk
 ;%0Aim
@@ -900,16 +900,65 @@
 tModel;%0A
+import com.intellij.openapi.roots.OrderRootType;%0A
 import c
@@ -1173,24 +1173,71 @@
 ilePointer;%0A
+import com.jetbrains.python.sdk.PythonSdkType;%0A
 import org.j
@@ -1400,19 +1400,17 @@
 olicy %7B%0A
-  
 %0A
+
   privat
@@ -1485,17 +1485,16 @@
 NotNull 
- 
 Project 
@@ -1688,16 +1688,17 @@
 ile root
+ 
 : Projec
@@ -1869,20 +1869,432 @@
 %7D%0A    %7D%0A
+%0A
     
+for (Module m : ModuleManager.getInstance(myProject).getModules()) %7B%0A      Sdk sdk = PythonSdkType.findPythonSdk(m);%0A      if (sdk != null) %7B%0A        for (VirtualFile dir : sdk.getRootProvider().getFiles(OrderRootType.CLASSES)) %7B%0A          VirtualFile sitePackages = dir.findChild(%22site-packages%22);%0A          if (sitePackages != null) %7B%0A            result.add(sitePackages);%0A          %7D%0A        %7D%0A      %7D%0A    %7D%0A
 %0A    ret

Exclude site-packages from index (attempt)