RootNodeUsageGroupingRule.java

/*
 * Copyright 2003-2016 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 jetbrains.mps.idea.core.usages.rules;

import com.intellij.openapi.project.Project;
import com.intellij.usages.Usage;
import com.intellij.usages.UsageGroup;
import com.intellij.usages.impl.rules.FileGroupingRule;
import jetbrains.mps.ide.project.ProjectHelper;
import jetbrains.mps.nodefs.NodeVirtualFileSystem;
import org.jetbrains.annotations.NotNull;

class RootNodeUsageGroupingRule extends FileGroupingRule {
  private Project project;

  public RootNodeUsageGroupingRule(Project project) {
    super(project);
    this.project = project;
  }


  @Override
  public UsageGroup groupUsage(@NotNull Usage usage) {
    if (usage instanceof UsageInRoot) {
      return new FileUsageGroup(project, NodeVirtualFileSystem.getInstance().getFileFor(ProjectHelper.getProjectRepository(project), ((UsageInRoot) usage).getRoot()));
    }
    return null;
  }


}