| /* |
| * 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; |
| |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.progress.ProgressIndicator; |
| import com.intellij.openapi.progress.ProgressManager; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.psi.*; |
| import com.intellij.psi.codeStyle.CodeStyleManager; |
| import com.intellij.psi.codeStyle.JavaCodeStyleManager; |
| import com.intellij.usageView.UsageInfo; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.SequentialModalProgressTask; |
| import com.intellij.util.SequentialTask; |
| import com.intellij.util.containers.HashSet; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| public class OptimizeImportsRefactoringHelper implements RefactoringHelper<Set<PsiJavaFile>> { |
| private static final String REMOVING_REDUNDANT_IMPORTS_TITLE = "Removing redundant imports"; |
| |
| @Override |
| public Set<PsiJavaFile> prepareOperation(final UsageInfo[] usages) { |
| Set<PsiJavaFile> javaFiles = new HashSet<PsiJavaFile>(); |
| for (UsageInfo usage : usages) { |
| if (usage.isNonCodeUsage) continue; |
| final PsiFile file = usage.getFile(); |
| if (file instanceof PsiJavaFile) { |
| javaFiles.add((PsiJavaFile)file); |
| } |
| } |
| return javaFiles; |
| } |
| |
| @Override |
| public void performOperation(final Project project, final Set<PsiJavaFile> javaFiles) { |
| CodeStyleManager.getInstance(project).performActionWithFormatterDisabled(new Runnable() { |
| @Override |
| public void run() { |
| PsiDocumentManager.getInstance(project).commitAllDocuments(); |
| } |
| }); |
| |
| final Set<SmartPsiElementPointer<PsiImportStatementBase>> redundants = new HashSet<SmartPsiElementPointer<PsiImportStatementBase>>(); |
| final Runnable findRedundantImports = new Runnable() { |
| @Override |
| public void run() { |
| ApplicationManager.getApplication().runReadAction(new Runnable() { |
| @Override |
| public void run() { |
| final JavaCodeStyleManager styleManager = JavaCodeStyleManager.getInstance(project); |
| final ProgressIndicator progressIndicator = ProgressManager.getInstance().getProgressIndicator(); |
| final SmartPointerManager pointerManager = SmartPointerManager.getInstance(project); |
| int i = 0; |
| final int fileCount = javaFiles.size(); |
| for (PsiJavaFile file : javaFiles) { |
| if (file.isValid()) { |
| final VirtualFile virtualFile = file.getVirtualFile(); |
| if (virtualFile != null) { |
| if (progressIndicator != null) { |
| progressIndicator.setText2(virtualFile.getPresentableUrl()); |
| progressIndicator.setFraction((double)i++ / fileCount); |
| } |
| final Collection<PsiImportStatementBase> perFile = styleManager.findRedundantImports(file); |
| if (perFile != null) { |
| for (PsiImportStatementBase redundant : perFile) { |
| redundants.add(pointerManager.createSmartPsiElementPointer(redundant)); |
| } |
| } |
| } |
| } |
| } |
| } |
| }); |
| } |
| }; |
| |
| if (!ProgressManager.getInstance().runProcessWithProgressSynchronously(findRedundantImports, REMOVING_REDUNDANT_IMPORTS_TITLE, false, project)) return; |
| |
| ApplicationManager.getApplication().runWriteAction(new Runnable() { |
| @Override |
| public void run() { |
| final SequentialModalProgressTask progressTask = new SequentialModalProgressTask(project, REMOVING_REDUNDANT_IMPORTS_TITLE, false); |
| progressTask.setMinIterationTime(200); |
| progressTask.setTask(new OptimizeImportsTask(progressTask, redundants)); |
| ProgressManager.getInstance().run(progressTask); |
| } |
| }); |
| } |
| } |
| |
| |
| class OptimizeImportsTask implements SequentialTask { |
| private static final Logger LOG = Logger.getInstance("#" + OptimizeImportsTask.class.getName()); |
| |
| private final Iterator<SmartPsiElementPointer<PsiImportStatementBase>> myPointers; |
| private final SequentialModalProgressTask myTask; |
| private final int myTotal; |
| private int myCount; |
| |
| public OptimizeImportsTask(SequentialModalProgressTask progressTask, Set<SmartPsiElementPointer<PsiImportStatementBase>> pointers) { |
| myTask = progressTask; |
| myTotal = pointers.size(); |
| myPointers = pointers.iterator(); |
| } |
| |
| @Override |
| public void prepare() { |
| } |
| |
| @Override |
| public boolean isDone() { |
| return !myPointers.hasNext(); |
| } |
| |
| @Override |
| public boolean iteration() { |
| final ProgressIndicator indicator = myTask.getIndicator(); |
| if (indicator != null) { |
| indicator.setFraction(((double)myCount ++) / myTotal); |
| } |
| |
| final SmartPsiElementPointer<PsiImportStatementBase> pointer = myPointers.next(); |
| |
| final PsiImportStatementBase importStatement = pointer.getElement(); |
| if (importStatement != null && importStatement.isValid()) { |
| final PsiJavaCodeReferenceElement ref = importStatement.getImportReference(); |
| //Do not remove non-resolving refs |
| if (ref != null) { |
| final PsiElement resolve = ref.resolve(); |
| if (resolve != null && |
| (!(resolve instanceof PsiPackage) || ((PsiPackage)resolve).getDirectories(ref.getResolveScope()).length != 0)) { |
| try { |
| importStatement.delete(); |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| } |
| } |
| |
| return isDone(); |
| } |
| |
| @Override |
| public void stop() { |
| } |
| } |