| /* |
| * Copyright 2000-2013 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.replaceConstructorWithFactory; |
| |
| import com.intellij.openapi.actionSystem.CommonDataKeys; |
| import com.intellij.openapi.actionSystem.DataContext; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.ScrollType; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.ui.Messages; |
| import com.intellij.psi.*; |
| import com.intellij.refactoring.HelpID; |
| import com.intellij.refactoring.RefactoringActionHandler; |
| import com.intellij.refactoring.RefactoringBundle; |
| import com.intellij.refactoring.util.CommonRefactoringUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author dsl |
| */ |
| public class ReplaceConstructorWithFactoryHandler |
| implements RefactoringActionHandler { |
| public static final String REFACTORING_NAME = RefactoringBundle.message("replace.constructor.with.factory.method.title"); |
| private Project myProject; |
| |
| public void invoke(@NotNull Project project, Editor editor, PsiFile file, DataContext dataContext) { |
| int offset = editor.getCaretModel().getOffset(); |
| editor.getScrollingModel().scrollToCaret(ScrollType.MAKE_VISIBLE); |
| PsiElement element = file.findElementAt(offset); |
| while (true) { |
| if (element == null || element instanceof PsiFile) { |
| String message = RefactoringBundle.getCannotRefactorMessage(RefactoringBundle.message("error.wrong.caret.position.constructor")); |
| CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.REPLACE_CONSTRUCTOR_WITH_FACTORY); |
| return; |
| } |
| |
| if (element instanceof PsiReferenceExpression) { |
| final PsiElement psiElement = ((PsiReferenceExpression)element).resolve(); |
| if (psiElement instanceof PsiMethod && ((PsiMethod) psiElement).isConstructor()) { |
| invoke(project, new PsiElement[] { psiElement }, dataContext); |
| return; |
| } |
| } |
| else if (element instanceof PsiConstructorCall) { |
| final PsiConstructorCall constructorCall = (PsiConstructorCall)element; |
| final PsiMethod method = constructorCall.resolveConstructor(); |
| if (method != null) { |
| invoke(project, new PsiElement[] { method }, dataContext); |
| return; |
| } |
| // handle default constructor |
| if (element instanceof PsiNewExpression) { |
| final PsiJavaCodeReferenceElement classReference = ((PsiNewExpression)element).getClassReference(); |
| if (classReference != null) { |
| final PsiElement classElement = classReference.resolve(); |
| if (classElement instanceof PsiClass) { |
| invoke(project, new PsiElement[] { classElement }, dataContext); |
| return; |
| } |
| } |
| } |
| } |
| |
| if (element instanceof PsiClass && !(element instanceof PsiAnonymousClass) |
| && ((PsiClass) element).getConstructors().length == 0) { |
| invoke(project, new PsiElement[]{element}, dataContext); |
| return; |
| } |
| if (element instanceof PsiMethod && ((PsiMethod) element).isConstructor()) { |
| invoke(project, new PsiElement[]{element}, dataContext); |
| return; |
| } |
| element = element.getParent(); |
| } |
| } |
| |
| public void invoke(@NotNull Project project, @NotNull PsiElement[] elements, DataContext dataContext) { |
| if (elements.length != 1) return; |
| |
| myProject = project; |
| Editor editor = CommonDataKeys.EDITOR.getData(dataContext); |
| if (elements[0] instanceof PsiMethod) { |
| final PsiMethod method = (PsiMethod)elements[0]; |
| invoke(method, editor); |
| } |
| else if (elements[0] instanceof PsiClass) { |
| invoke((PsiClass)elements[0], editor); |
| } |
| |
| } |
| |
| private void invoke(PsiClass aClass, Editor editor) { |
| String qualifiedName = aClass.getQualifiedName(); |
| if(qualifiedName == null) { |
| showJspOrLocalClassMessage(editor); |
| return; |
| } |
| if (!checkAbstractClassOrInterfaceMessage(aClass, editor)) return; |
| final PsiMethod[] constructors = aClass.getConstructors(); |
| if (constructors.length > 0) { |
| String message = |
| RefactoringBundle.message("class.does.not.have.implicit.default.constructor", aClass.getQualifiedName()) ; |
| CommonRefactoringUtil.showErrorHint(myProject, editor, message, REFACTORING_NAME, HelpID.REPLACE_CONSTRUCTOR_WITH_FACTORY); |
| return; |
| } |
| final int answer = Messages.showYesNoDialog(myProject, |
| RefactoringBundle.message("would.you.like.to.replace.default.constructor.of.0.with.factory.method", aClass.getQualifiedName()), |
| REFACTORING_NAME, Messages.getQuestionIcon() |
| ); |
| if (answer != Messages.YES) return; |
| if (!CommonRefactoringUtil.checkReadOnlyStatus(myProject, aClass)) return; |
| new ReplaceConstructorWithFactoryDialog(myProject, null, aClass).show(); |
| } |
| |
| private void showJspOrLocalClassMessage(Editor editor) { |
| String message = RefactoringBundle.getCannotRefactorMessage(RefactoringBundle.message("refactoring.is.not.supported.for.local.and.jsp.classes")); |
| CommonRefactoringUtil.showErrorHint(myProject, editor, message, REFACTORING_NAME, HelpID.REPLACE_CONSTRUCTOR_WITH_FACTORY); |
| } |
| private boolean checkAbstractClassOrInterfaceMessage(PsiClass aClass, Editor editor) { |
| if (!aClass.hasModifierProperty(PsiModifier.ABSTRACT)) return true; |
| String message = RefactoringBundle.getCannotRefactorMessage(aClass.isInterface() ? |
| RefactoringBundle.message("class.is.interface", aClass.getQualifiedName()) : |
| RefactoringBundle.message("class.is.abstract", aClass.getQualifiedName())); |
| CommonRefactoringUtil.showErrorHint(myProject, editor, message, REFACTORING_NAME, HelpID.REPLACE_CONSTRUCTOR_WITH_FACTORY); |
| return false; |
| } |
| |
| private void invoke(final PsiMethod method, Editor editor) { |
| if (!method.isConstructor()) { |
| String message = RefactoringBundle.getCannotRefactorMessage(RefactoringBundle.message("method.is.not.a.constructor")); |
| CommonRefactoringUtil.showErrorHint(myProject, editor, message, REFACTORING_NAME, HelpID.REPLACE_CONSTRUCTOR_WITH_FACTORY); |
| return; |
| } |
| |
| PsiClass aClass = method.getContainingClass(); |
| if(aClass == null || aClass.getQualifiedName() == null) { |
| showJspOrLocalClassMessage(editor); |
| return; |
| } |
| |
| if (!checkAbstractClassOrInterfaceMessage(aClass, editor)) return; |
| |
| if (!CommonRefactoringUtil.checkReadOnlyStatus(myProject, method)) return; |
| new ReplaceConstructorWithFactoryDialog(myProject, method, method.getContainingClass()).show(); |
| } |
| } |