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path: root/platform/vcs-impl/src/com/intellij/openapi/vcs/impl/projectlevelman/MappingsToRoots.java
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/*
 * 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.openapi.vcs.impl.projectlevelman;

import com.intellij.lifecycle.PeriodicalTasksCloser;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.diff.impl.patch.formove.FilePathComparator;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.FileIndexFacade;
import com.intellij.openapi.vcs.AbstractVcs;
import com.intellij.openapi.vcs.VcsDirectoryMapping;
import com.intellij.openapi.vcs.impl.DefaultVcsRootPolicy;
import com.intellij.openapi.vfs.VfsUtil;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

public class MappingsToRoots {
  private final NewMappings myMappings;
  private final Project myProject;

  public MappingsToRoots(final NewMappings mappings, final Project project) {
    myMappings = mappings;
    myProject = project;
  }

  @NotNull
  public VirtualFile[] getRootsUnderVcs(@NotNull AbstractVcs vcs) {
    List<VirtualFile> result = myMappings.getMappingsAsFilesUnderVcs(vcs);

    final AbstractVcs.RootsConvertor convertor = vcs.getCustomConvertor();
    if (convertor != null) {
      result = convertor.convertRoots(result);
    }

    Collections.sort(result, FilePathComparator.getInstance());
    if (! vcs.allowsNestedRoots()) {
      final FileIndexFacade facade = PeriodicalTasksCloser.getInstance().safeGetService(myProject, FileIndexFacade.class);
      final List<VirtualFile> finalResult = result;
      ApplicationManager.getApplication().runReadAction(new Runnable() {
        @Override
        public void run() {
          int i=1;
          while(i < finalResult.size()) {
            final VirtualFile previous = finalResult.get(i - 1);
            final VirtualFile current = finalResult.get(i);
            if (facade.isValidAncestor(previous, current)) {
    //        if (FileIndexFacade.getInstance(myProject).isValidAncestor(previous, current) && vcs.isVersionedDirectory(previous)) {
              finalResult.remove(i);
            }
            else {
              i++;
            }
          }
        }
      });
    }
    return VfsUtil.toVirtualFileArray(result);
  }

  // not only set mappings, but include all modules inside: modules might have different settings
  public List<VirtualFile> getDetailedVcsMappings(final AbstractVcs vcs) {
    // same as above, but no compression
    final List<VirtualFile> result = myMappings.getMappingsAsFilesUnderVcs(vcs);

    boolean addInnerModules = true;
    final String vcsName = vcs.getName();
    final List<VcsDirectoryMapping> directoryMappings = myMappings.getDirectoryMappings(vcsName);
    for (VcsDirectoryMapping directoryMapping : directoryMappings) {
      if (directoryMapping.isDefaultMapping()) {
        addInnerModules = false;
        break;
      }
    }

    Collections.sort(result, FilePathComparator.getInstance());
    if (addInnerModules) {
      final FileIndexFacade facade = PeriodicalTasksCloser.getInstance().safeGetService(myProject, FileIndexFacade.class);
      final DefaultVcsRootPolicy defaultVcsRootPolicy = DefaultVcsRootPolicy.getInstance(myProject);
      final List<VirtualFile> modules = new ArrayList<VirtualFile>();
      defaultVcsRootPolicy.addDefaultVcsRoots(myMappings, vcsName, modules);
      ApplicationManager.getApplication().runReadAction(new Runnable() {
        public void run() {
          final Iterator<VirtualFile> iterator = modules.iterator();
          while (iterator.hasNext()) {
            final VirtualFile module = iterator.next();
            boolean included = false;
            for (VirtualFile root : result) {
              if (facade.isValidAncestor(root, module)) {
                included = true;
                break;
              }
            }
            if (! included) {
              iterator.remove();
            }
          }
        }
      });
      result.addAll(modules);
    }

    return result;
  }
}