android/src/com/android/tools/idea/gradle/customizer/java/ContentRootModuleCustomizer.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * 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.android.tools.idea.gradle.customizer.java;

import com.android.tools.idea.gradle.IdeaJavaProject;
import com.android.tools.idea.gradle.customizer.AbstractContentRootModuleCustomizer;
import com.android.tools.idea.gradle.model.java.JavaModuleContentRoot;
import com.google.common.collect.Lists;
import com.intellij.openapi.roots.ContentEntry;
import com.intellij.openapi.roots.ModifiableRootModel;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.jps.model.module.JpsModuleSourceRootType;

import java.io.File;
import java.util.Collection;
import java.util.List;

import static com.android.tools.idea.gradle.util.FilePaths.findParentContentEntry;
import static com.android.tools.idea.gradle.util.FilePaths.pathToIdeaUrl;
import static com.android.tools.idea.gradle.util.Projects.isGradleProjectModule;
import static com.intellij.openapi.util.io.FileUtil.filesEqual;
import static org.jetbrains.jps.model.java.JavaResourceRootType.RESOURCE;
import static org.jetbrains.jps.model.java.JavaResourceRootType.TEST_RESOURCE;
import static org.jetbrains.jps.model.java.JavaSourceRootType.SOURCE;
import static org.jetbrains.jps.model.java.JavaSourceRootType.TEST_SOURCE;

public class ContentRootModuleCustomizer extends AbstractContentRootModuleCustomizer<IdeaJavaProject> {
  @Override
  @NotNull
  protected Collection<ContentEntry> findOrCreateContentEntries(@NotNull ModifiableRootModel model, @NotNull IdeaJavaProject javaProject) {
    List<ContentEntry> allEntries = Lists.newArrayList();
    for (JavaModuleContentRoot contentRoot : javaProject.getContentRoots()) {
      File rootDirPath = contentRoot.getRootDirPath();
      ContentEntry contentEntry = model.addContentEntry(pathToIdeaUrl(rootDirPath));
      allEntries.add(contentEntry);
    }
    return allEntries;
  }

  @Override
  protected void setUpContentEntries(@NotNull ModifiableRootModel ideaModuleModel,
                                     @NotNull Collection<ContentEntry> contentEntries,
                                     @NotNull IdeaJavaProject javaProject,
                                     @NotNull List<RootSourceFolder> orphans) {
    boolean isTopLevelJavaModule = isGradleProjectModule(ideaModuleModel.getModule());

    File buildFolderPath = javaProject.getBuildFolderPath();
    boolean buildFolderUnexcluded = buildFolderPath == null;

    for (JavaModuleContentRoot contentRoot : javaProject.getContentRoots()) {
      if (contentRoot == null) {
        continue;
      }
      addSourceFolders(contentEntries, contentRoot.getSourceDirPaths(), SOURCE, orphans, false);
      addSourceFolders(contentEntries, contentRoot.getGenSourceDirPaths(), SOURCE, orphans, true);
      addSourceFolders(contentEntries, contentRoot.getResourceDirPaths(), RESOURCE, orphans, false);
      addSourceFolders(contentEntries, contentRoot.getTestDirPaths(), TEST_SOURCE, orphans, false);
      addSourceFolders(contentEntries, contentRoot.getGenTestDirPaths(), TEST_SOURCE, orphans, true);
      addSourceFolders(contentEntries, contentRoot.getTestResourceDirPaths(), TEST_RESOURCE, orphans, false);

      for (File excluded : contentRoot.getExcludeDirPaths()) {
        ContentEntry contentEntry = findParentContentEntry(excluded, contentEntries);
        if (contentEntry != null) {
          if (isTopLevelJavaModule && !buildFolderUnexcluded) {
            // We need to "undo" the implicit exclusion of "build" folder for top-level module.
            if (filesEqual(excluded, buildFolderPath)) {
              buildFolderUnexcluded = true;
              continue;
            }
          }
          addExcludedFolder(contentEntry, excluded);
        }
      }
    }
  }

  private void addSourceFolders(@NotNull Collection<ContentEntry> contentEntries,
                                @NotNull Collection<File> sourceDirPaths,
                                @NotNull JpsModuleSourceRootType type,
                                @NotNull List<RootSourceFolder> orphans,
                                boolean generated) {
    for (File path : sourceDirPaths) {
      addSourceFolder(contentEntries, path, type, generated, orphans);
    }
  }
}