| /* |
| * Copyright 2000-2010 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.psi.util.proximity; |
| |
| import com.intellij.openapi.util.NullableLazyKey; |
| import com.intellij.psi.PsiDirectory; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil; |
| import com.intellij.psi.util.ProximityLocation; |
| import com.intellij.util.NullableFunction; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author yole |
| */ |
| public class SameDirectoryWeigher extends ProximityWeigher { |
| private static final NullableLazyKey<PsiDirectory, ProximityLocation> |
| PLACE_DIRECTORY = NullableLazyKey.create("placeDirectory", new NullableFunction<ProximityLocation, PsiDirectory>() { |
| @Override |
| public PsiDirectory fun(ProximityLocation location) { |
| return getParentDirectory(location.getPosition()); |
| } |
| }); |
| |
| private static PsiDirectory getParentDirectory(PsiElement element) { |
| PsiFile file = InjectedLanguageUtil.getTopLevelFile(element); |
| if (file != null) { |
| element = file; |
| } |
| while (element != null && !(element instanceof PsiDirectory)) { |
| element = element.getParent(); |
| } |
| return (PsiDirectory)element; |
| } |
| |
| @Override |
| public Boolean weigh(@NotNull final PsiElement element, @NotNull final ProximityLocation location) { |
| if (location.getPosition() == null) { |
| return Boolean.TRUE; |
| } |
| final PsiDirectory placeDirectory = PLACE_DIRECTORY.getValue(location); |
| return placeDirectory != null && placeDirectory.equals(getParentDirectory(element)); |
| } |
| } |