| /* |
| * Copyright 2000-2011 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.typeMigration; |
| |
| import com.intellij.codeInsight.TargetElementUtilBase; |
| import com.intellij.openapi.actionSystem.DataContext; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.ScrollType; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.refactoring.RefactoringActionHandler; |
| import com.intellij.refactoring.RefactoringBundle; |
| import com.intellij.refactoring.typeMigration.ui.TypeMigrationDialog; |
| import com.intellij.refactoring.util.CommonRefactoringUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class ChangeTypeSignatureHandler implements RefactoringActionHandler { |
| private static final Logger LOG = Logger.getInstance("#" + ChangeTypeSignatureHandler.class.getName()); |
| |
| public static final String REFACTORING_NAME = "Type Migration"; |
| |
| public void invoke(@NotNull Project project, Editor editor, PsiFile file, DataContext dataContext) { |
| editor.getScrollingModel().scrollToCaret(ScrollType.MAKE_VISIBLE); |
| final int offset = TargetElementUtilBase.adjustOffset(file, editor.getDocument(), editor.getCaretModel().getOffset()); |
| final PsiElement element = file.findElementAt(offset); |
| PsiTypeElement typeElement = PsiTreeUtil.getParentOfType(element, PsiTypeElement.class); |
| while (typeElement != null) { |
| final PsiElement parent = typeElement.getParent(); |
| if (parent instanceof PsiVariable || (parent instanceof PsiMember && !(parent instanceof PsiClass)) || isClassArgument(parent)) { |
| invoke(project, parent, null, editor); |
| return; |
| } |
| typeElement = PsiTreeUtil.getParentOfType(parent, PsiTypeElement.class, false); |
| } |
| CommonRefactoringUtil.showErrorHint(project, editor, |
| "The caret should be positioned on type of field, variable, method or method parameter to be refactored", |
| REFACTORING_NAME, "refactoring.migrateType"); |
| } |
| |
| |
| public void invoke(@NotNull final Project project, @NotNull final PsiElement[] elements, final DataContext dataContext) { |
| LOG.assertTrue(elements.length == 1); |
| final PsiElement element = elements[0]; |
| invokeOnElement(project, element); |
| } |
| |
| public static boolean invokeOnElement(final Project project, final PsiElement element) { |
| if (element instanceof PsiVariable || (element instanceof PsiMember && !(element instanceof PsiClass)) || element instanceof PsiFile) { |
| invoke(project, element, null, null); |
| return true; |
| } |
| if (isClassArgument(element)) { |
| invoke(project, element, null, null); |
| return true; |
| } |
| return false; |
| } |
| |
| protected static boolean isClassArgument(PsiElement element) { |
| if (element instanceof PsiReferenceParameterList) { |
| final PsiMember member = PsiTreeUtil.getParentOfType(element, PsiMember.class); |
| if (member instanceof PsiAnonymousClass) { |
| return ((PsiAnonymousClass)member).getBaseClassReference().getParameterList() == element; |
| } |
| if (member instanceof PsiClass) { |
| final PsiReferenceList implementsList = ((PsiClass)member).getImplementsList(); |
| final PsiReferenceList extendsList = ((PsiClass)member).getExtendsList(); |
| return PsiTreeUtil.isAncestor(implementsList, element, false) || |
| PsiTreeUtil.isAncestor(extendsList, element, false); |
| } |
| } |
| return false; |
| } |
| |
| public static void invoke(final Project project, final PsiElement root, final TypeMigrationRules rules, final Editor editor) { |
| if (Util.canBeMigrated(root)) { |
| TypeMigrationDialog dialog = new TypeMigrationDialog(project, root, rules); |
| dialog.show(); |
| return; |
| } |
| |
| CommonRefactoringUtil.showErrorHint(project, editor, RefactoringBundle.message("only.fields.variables.of.methods.of.valid.type.can.be.considered"), |
| RefactoringBundle.message("unable.to.start.type.migration"), null); |
| |
| } |
| } |