| /* |
| * Copyright 2000-2009 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.module.Module; |
| import com.intellij.openapi.module.ModuleUtil; |
| import com.intellij.openapi.util.NullableLazyKey; |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.ProximityLocation; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.util.PsiUtilCore; |
| import com.intellij.util.NullableFunction; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author peter |
| */ |
| public class ExplicitlyImportedWeigher extends ProximityWeigher { |
| private static final NullableLazyKey<PsiPackage, ProximityLocation> |
| PLACE_PACKAGE = NullableLazyKey.create("placePackage", new NullableFunction<ProximityLocation, PsiPackage>() { |
| @Override |
| public PsiPackage fun(ProximityLocation location) { |
| PsiElement position = location.getPosition(); |
| if (position == null) return null; |
| |
| return getContextPackage(position); |
| } |
| }); |
| |
| @Nullable |
| private static PsiPackage getContextPackage(PsiElement position) { |
| PsiFile file = position.getContainingFile(); |
| if (file == null) return null; |
| |
| PsiFile originalFile = file.getOriginalFile(); |
| while (true) { |
| PsiElement context = originalFile.getContext(); |
| if (context == null) { |
| PsiDirectory parent = originalFile.getParent(); |
| if (parent != null) { |
| return JavaDirectoryService.getInstance().getPackage(parent); |
| } |
| return null; |
| } |
| |
| PsiFile containingFile = context.getContainingFile(); |
| if (containingFile == null) return null; |
| |
| originalFile = containingFile.getOriginalFile(); |
| } |
| } |
| |
| @Override |
| public Integer weigh(@NotNull final PsiElement element, @NotNull final ProximityLocation location) { |
| final PsiElement position = location.getPosition(); |
| if (position == null){ |
| return 0; |
| } |
| |
| PsiUtilCore.ensureValid(position); |
| |
| final PsiFile elementFile = element.getContainingFile(); |
| final PsiFile positionFile = position.getContainingFile(); |
| if (positionFile != null && elementFile != null && positionFile.getOriginalFile().equals(elementFile.getOriginalFile())) { |
| return 3; |
| } |
| |
| if (element instanceof PsiClass) { |
| final String qname = ((PsiClass) element).getQualifiedName(); |
| if (qname != null) { |
| final PsiJavaFile psiJavaFile = PsiTreeUtil.getContextOfType(position, PsiJavaFile.class, false); |
| if (psiJavaFile != null) { |
| PsiUtilCore.ensureValid(psiJavaFile); |
| final PsiImportList importList = psiJavaFile.getImportList(); |
| if (importList != null) { |
| for (final PsiImportStatement importStatement : importList.getImportStatements()) { |
| final boolean onDemand = importStatement.isOnDemand(); |
| final String imported = importStatement.getQualifiedName(); |
| if (onDemand && qname.startsWith(imported + ".") || !onDemand && qname.equals(imported)) { |
| return 1; |
| } |
| } |
| } |
| } |
| } |
| |
| } |
| if (element instanceof PsiMember) { |
| final PsiPackage placePackage = PLACE_PACKAGE.getValue(location); |
| if (placePackage != null) { |
| Module elementModule = ModuleUtil.findModuleForPsiElement(element); |
| if (location.getPositionModule() == elementModule && placePackage.equals(getContextPackage(element))) { |
| return 2; |
| } |
| } |
| } |
| return 0; |
| } |
| } |