| /* |
| * Copyright 2006-2014 Bas Leijdekkers |
| * |
| * 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.siyeh.ipp.interfacetoclass; |
| |
| import com.intellij.openapi.application.AccessToken; |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.application.WriteAction; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.presentation.java.ClassPresentationUtil; |
| import com.intellij.psi.search.SearchScope; |
| import com.intellij.psi.search.searches.ClassInheritorsSearch; |
| import com.intellij.psi.search.searches.FunctionalExpressionSearch; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.refactoring.BaseRefactoringProcessor; |
| import com.intellij.refactoring.ui.ConflictsDialog; |
| import com.intellij.refactoring.util.CommonRefactoringUtil; |
| import com.intellij.refactoring.util.RefactoringUIUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.Processor; |
| import com.intellij.util.Query; |
| import com.intellij.util.containers.MultiMap; |
| import com.siyeh.IntentionPowerPackBundle; |
| import com.siyeh.ipp.base.Intention; |
| import com.siyeh.ipp.base.PsiElementPredicate; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.Collection; |
| |
| public class ConvertInterfaceToClassIntention extends Intention { |
| |
| private static void changeInterfaceToClass(PsiClass anInterface) throws IncorrectOperationException { |
| final PsiIdentifier nameIdentifier = anInterface.getNameIdentifier(); |
| assert nameIdentifier != null; |
| final PsiElement whiteSpace = nameIdentifier.getPrevSibling(); |
| assert whiteSpace != null; |
| final PsiElement interfaceToken = whiteSpace.getPrevSibling(); |
| assert interfaceToken != null; |
| final PsiKeyword interfaceKeyword = (PsiKeyword)interfaceToken.getOriginalElement(); |
| final Project project = anInterface.getProject(); |
| final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project); |
| final PsiElementFactory factory = psiFacade.getElementFactory(); |
| final PsiKeyword classKeyword = factory.createKeyword("class"); |
| interfaceKeyword.replace(classKeyword); |
| |
| final PsiModifierList classModifierList = anInterface.getModifierList(); |
| if (classModifierList == null) { |
| return; |
| } |
| classModifierList.setModifierProperty(PsiModifier.ABSTRACT, true); |
| |
| final PsiElement parent = anInterface.getParent(); |
| if (parent instanceof PsiClass) { |
| classModifierList.setModifierProperty(PsiModifier.STATIC, true); |
| } |
| |
| final PsiMethod[] methods = anInterface.getMethods(); |
| for (final PsiMethod method : methods) { |
| PsiUtil.setModifierProperty(method, PsiModifier.PUBLIC, true); |
| if (method.hasModifierProperty(PsiModifier.DEFAULT)) { |
| PsiUtil.setModifierProperty(method, PsiModifier.DEFAULT, false); |
| } |
| else if (!method.hasModifierProperty(PsiModifier.STATIC)) { |
| PsiUtil.setModifierProperty(method, PsiModifier.ABSTRACT, true); |
| } |
| } |
| |
| final PsiField[] fields = anInterface.getFields(); |
| for (final PsiField field : fields) { |
| final PsiModifierList modifierList = field.getModifierList(); |
| if (modifierList != null) { |
| modifierList.setModifierProperty(PsiModifier.PUBLIC, true); |
| modifierList.setModifierProperty(PsiModifier.STATIC, true); |
| modifierList.setModifierProperty(PsiModifier.FINAL, true); |
| } |
| } |
| |
| final PsiClass[] innerClasses = anInterface.getInnerClasses(); |
| for (PsiClass innerClass : innerClasses) { |
| final PsiModifierList modifierList = innerClass.getModifierList(); |
| if (modifierList != null) { |
| modifierList.setModifierProperty(PsiModifier.PUBLIC, true); |
| if (!innerClass.isInterface()) { |
| modifierList.setModifierProperty(PsiModifier.STATIC, true); |
| } |
| } |
| } |
| } |
| |
| @Override |
| protected void processIntention(@NotNull PsiElement element) throws IncorrectOperationException { |
| final PsiClass anInterface = (PsiClass)element.getParent(); |
| final SearchScope searchScope = anInterface.getUseScope(); |
| final Query<PsiClass> query = ClassInheritorsSearch.search(anInterface, searchScope, false); |
| final MultiMap<PsiElement, String> conflicts = new MultiMap<PsiElement, String>(); |
| query.forEach(new Processor<PsiClass>() { |
| @Override |
| public boolean process(PsiClass aClass) { |
| final PsiReferenceList extendsList = aClass.getExtendsList(); |
| if (extendsList == null) { |
| return true; |
| } |
| final PsiJavaCodeReferenceElement[] referenceElements = extendsList.getReferenceElements(); |
| if (referenceElements.length > 0) { |
| final PsiElement target = referenceElements[0].resolve(); |
| if (target != null) { |
| conflicts.putValue(aClass, IntentionPowerPackBundle.message( |
| "0.already.extends.1.and.will.not.compile.after.converting.2.to.a.class", |
| RefactoringUIUtil.getDescription(aClass, true), RefactoringUIUtil.getDescription(target, true), |
| RefactoringUIUtil.getDescription(anInterface, false))); |
| } |
| } |
| return true; |
| } |
| }); |
| |
| final PsiFunctionalExpression functionalExpression = FunctionalExpressionSearch.search(anInterface, searchScope).findFirst(); |
| if (functionalExpression != null) { |
| final String conflictMessage = ClassPresentationUtil.getFunctionalExpressionPresentation(functionalExpression, true) + |
| " will not compile after converting " + RefactoringUIUtil.getDescription(anInterface, false) + " to a class"; |
| conflicts.putValue(functionalExpression, conflictMessage); |
| } |
| final boolean conflictsDialogOK; |
| if (conflicts.isEmpty()) { |
| conflictsDialogOK = true; |
| } else { |
| if (ApplicationManager.getApplication().isUnitTestMode()) { |
| throw new BaseRefactoringProcessor.ConflictsInTestsException(conflicts.values()); |
| } |
| final ConflictsDialog conflictsDialog = new ConflictsDialog(anInterface.getProject(), conflicts, new Runnable() { |
| @Override |
| public void run() { |
| final AccessToken token = WriteAction.start(); |
| try { |
| convertInterfaceToClass(anInterface); |
| } |
| finally { |
| token.finish(); |
| } |
| } |
| }); |
| conflictsDialog.show(); |
| conflictsDialogOK = conflictsDialog.isOK(); |
| } |
| if (conflictsDialogOK) { |
| convertInterfaceToClass(anInterface); |
| } |
| } |
| |
| private static void convertInterfaceToClass(PsiClass anInterface) { |
| final boolean success = moveSubClassImplementsToExtends(anInterface); |
| if (!success) { |
| return; |
| } |
| changeInterfaceToClass(anInterface); |
| moveExtendsToImplements(anInterface); |
| } |
| |
| @Override |
| @NotNull |
| protected PsiElementPredicate getElementPredicate() { |
| return new ConvertInterfaceToClassPredicate(); |
| } |
| |
| private static void moveExtendsToImplements(PsiClass anInterface) throws IncorrectOperationException { |
| final PsiReferenceList extendsList = anInterface.getExtendsList(); |
| final PsiReferenceList implementsList = anInterface.getImplementsList(); |
| assert extendsList != null; |
| final PsiJavaCodeReferenceElement[] extendsRefElements = extendsList.getReferenceElements(); |
| for (PsiJavaCodeReferenceElement referenceElement : extendsRefElements) { |
| assert implementsList != null; |
| final PsiElement resolved = referenceElement.resolve(); |
| if (resolved instanceof PsiClass && ((PsiClass)resolved).isInterface()) { |
| implementsList.add(referenceElement); |
| referenceElement.delete(); |
| } |
| } |
| } |
| |
| private static boolean moveSubClassImplementsToExtends(PsiClass oldInterface) throws IncorrectOperationException { |
| final Project project = oldInterface.getProject(); |
| final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project); |
| final PsiElementFactory elementFactory = psiFacade.getElementFactory(); |
| final PsiJavaCodeReferenceElement oldInterfaceReference = elementFactory.createClassReferenceElement(oldInterface); |
| final SearchScope searchScope = oldInterface.getUseScope(); |
| final Query<PsiClass> query = ClassInheritorsSearch.search(oldInterface, searchScope, false); |
| final Collection<PsiClass> inheritors = query.findAll(); |
| final boolean success = CommonRefactoringUtil.checkReadOnlyStatusRecursively(project, inheritors, false); |
| if (!success) { |
| return false; |
| } |
| for (PsiClass inheritor : inheritors) { |
| final PsiReferenceList implementsList = inheritor.getImplementsList(); |
| final PsiReferenceList extendsList = inheritor.getExtendsList(); |
| if (implementsList != null) { |
| moveReference(implementsList, extendsList, oldInterfaceReference); |
| } |
| } |
| return true; |
| } |
| |
| private static void moveReference(@NotNull PsiReferenceList source, @Nullable PsiReferenceList target, |
| @NotNull PsiJavaCodeReferenceElement reference) throws IncorrectOperationException { |
| final PsiJavaCodeReferenceElement[] implementsReferences = source.getReferenceElements(); |
| final String qualifiedName = reference.getQualifiedName(); |
| for (PsiJavaCodeReferenceElement implementsReference : implementsReferences) { |
| final String implementsReferenceQualifiedName = implementsReference.getQualifiedName(); |
| if (qualifiedName.equals(implementsReferenceQualifiedName)) { |
| if (target != null) { |
| target.add(implementsReference); |
| } |
| implementsReference.delete(); |
| } |
| } |
| } |
| } |
