| /* |
| * 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.refactoring.safeDelete; |
| |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.roots.GeneratedSourcesFilter; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.SmartPointerManager; |
| import com.intellij.psi.SmartPsiElementPointer; |
| import com.intellij.refactoring.RefactoringBundle; |
| import com.intellij.refactoring.safeDelete.usageInfo.SafeDeleteReferenceUsageInfo; |
| import com.intellij.refactoring.util.RefactoringUIUtil; |
| import com.intellij.usageView.UsageInfo; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author dsl |
| */ |
| class UsageHolder { |
| private final SmartPsiElementPointer myElementPointer; |
| private int myUnsafeUsages; |
| private int myNonCodeUnsafeUsages; |
| |
| public UsageHolder(PsiElement element, UsageInfo[] usageInfos) { |
| Project project = element.getProject(); |
| myElementPointer = SmartPointerManager.getInstance(project).createSmartPsiElementPointer(element); |
| |
| GeneratedSourcesFilter[] filters = GeneratedSourcesFilter.EP_NAME.getExtensions(); |
| for (UsageInfo usageInfo : usageInfos) { |
| if (!(usageInfo instanceof SafeDeleteReferenceUsageInfo)) continue; |
| final SafeDeleteReferenceUsageInfo usage = (SafeDeleteReferenceUsageInfo)usageInfo; |
| if (usage.getReferencedElement() != element) continue; |
| |
| if (!usage.isSafeDelete()) { |
| myUnsafeUsages++; |
| if (usage.isNonCodeUsage || isInGeneratedCode(usage, project, filters)) { |
| myNonCodeUnsafeUsages++; |
| } |
| } |
| } |
| } |
| |
| private static boolean isInGeneratedCode(SafeDeleteReferenceUsageInfo usage, Project project, GeneratedSourcesFilter[] filters) { |
| VirtualFile file = usage.getVirtualFile(); |
| if (file == null) return false; |
| |
| for (GeneratedSourcesFilter filter : filters) { |
| if (filter.isGeneratedSource(file, project)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @NotNull |
| public String getDescription() { |
| final PsiElement element = myElementPointer.getElement(); |
| String message = RefactoringBundle.message("0.has.1.usages.that.are.not.safe.to.delete", RefactoringUIUtil.getDescription(element, true), myUnsafeUsages); |
| if (myNonCodeUnsafeUsages > 0) { |
| message += "<br>" + RefactoringBundle.message("safe.delete.of.those.0.in.comments.strings.non.code", myNonCodeUnsafeUsages); |
| } |
| return message; |
| } |
| |
| public boolean hasUnsafeUsagesInCode() { |
| return myUnsafeUsages != myNonCodeUnsafeUsages; |
| } |
| } |