platform/lang-impl/src/com/intellij/openapi/roots/libraries/ui/LibraryRootsDetector.java

/*
 * Copyright 2000-2012 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.roots.libraries.ui;

import com.intellij.openapi.progress.ProgressIndicator;
import com.intellij.openapi.roots.libraries.LibraryRootType;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.Collection;

/**
 * @author nik
 */
public abstract class LibraryRootsDetector {
  /**
   * Find suitable roots in {@code rootCandidate} or its descendants.
   *
   * @param rootCandidate file selected in the file chooser by user
   * @param progressIndicator can be used to show information about the progress and to abort searching if process is cancelled
   * @return suitable roots
   */
  public abstract Collection<DetectedLibraryRoot> detectRoots(@NotNull VirtualFile rootCandidate,
                                                              @NotNull ProgressIndicator progressIndicator);

  /**
   * @return presentable name for the root type or {@code null} if the root type isn't supported by this detector
   */
  @Nullable
  public abstract String getRootTypeName(@NotNull LibraryRootType rootType);
}