/*
 * Copyright 2013-2017 consulo.io
 *
 * 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 consulo.csharp.ide.findUsage.groupingRule;

import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import consulo.dotnet.psi.DotNetCodeBlockOwner;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.usages.Usage;
import com.intellij.usages.UsageGroup;
import com.intellij.usages.impl.FileStructureGroupRuleProvider;
import com.intellij.usages.rules.PsiElementUsage;
import com.intellij.usages.rules.UsageGroupingRule;

/**
 * @author VISTALL
 * @since 01.11.14
 */
public class CSharpCodeBlockOwnerGroupRuleProvider implements FileStructureGroupRuleProvider
{
	@Nullable
	@Override
	public UsageGroupingRule getUsageGroupingRule(Project project)
	{
		return new UsageGroupingRule()
		{
			@Nullable
			@Override
			public UsageGroup groupUsage(@NotNull Usage usage)
			{
				if(!(usage instanceof PsiElementUsage))
				{
					return null;
				}
				PsiElement element = ((PsiElementUsage) usage).getElement();

				DotNetCodeBlockOwner codeBlockOwner = PsiTreeUtil.getParentOfType(element, DotNetCodeBlockOwner.class);
				if(codeBlockOwner != null)
				{
					return new CSharpBaseGroupingRule<DotNetCodeBlockOwner>(codeBlockOwner);
				}
				return null;
			}
		};
	}
}