| /* |
| * Copyright 2000-2014 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.codeInsight.intention.impl; |
| |
| import com.intellij.codeInsight.FileModificationService; |
| import com.intellij.codeInsight.intention.BaseElementAtCaretIntentionAction; |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.codeStyle.CodeStyleManager; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author Dmitry Batkovich |
| */ |
| public class CreateSwitchIntention extends BaseElementAtCaretIntentionAction { |
| public static final String TEXT = "Create switch statement"; |
| |
| @Override |
| public void invoke(@NotNull final Project project, final Editor editor, @NotNull final PsiElement element) throws IncorrectOperationException { |
| if (!FileModificationService.getInstance().preparePsiElementsForWrite(element)) { |
| return; |
| } |
| final PsiExpressionStatement expressionStatement = resolveExpressionStatement(element); |
| final PsiElementFactory elementFactory = JavaPsiFacade.getInstance(project).getElementFactory(); |
| PsiSwitchStatement switchStatement = (PsiSwitchStatement)elementFactory |
| .createStatementFromText(String.format("switch (%s) {}", expressionStatement.getExpression().getText()), null); |
| switchStatement = (PsiSwitchStatement)expressionStatement.replace(switchStatement); |
| CodeStyleManager.getInstance(project).reformat(switchStatement); |
| |
| final PsiJavaToken lBrace = switchStatement.getBody().getLBrace(); |
| editor.getCaretModel().moveToOffset(lBrace.getTextOffset() + lBrace.getTextLength()); |
| } |
| |
| @Override |
| public boolean isAvailable(@NotNull final Project project, final Editor editor, @NotNull final PsiElement element) { |
| final PsiExpressionStatement expressionStatement = resolveExpressionStatement(element); |
| return expressionStatement != null && isValidTypeForSwitch(expressionStatement.getExpression().getType(), expressionStatement); |
| } |
| |
| private static PsiExpressionStatement resolveExpressionStatement(final PsiElement element) { |
| if (element instanceof PsiExpressionStatement) { |
| return (PsiExpressionStatement)element; |
| } else { |
| final PsiStatement psiStatement = PsiTreeUtil.getParentOfType(element, PsiStatement.class); |
| return psiStatement instanceof PsiExpressionStatement ? (PsiExpressionStatement)psiStatement : null; |
| } |
| } |
| |
| private static boolean isValidTypeForSwitch(@Nullable final PsiType type, final PsiElement context) { |
| if (type == null) { |
| return false; |
| } |
| |
| if (type instanceof PsiClassType) { |
| final PsiClass resolvedClass = ((PsiClassType)type).resolve(); |
| if (resolvedClass == null) { |
| return false; |
| } |
| return (PsiUtil.isLanguageLevel5OrHigher(context) && resolvedClass.isEnum()) |
| || (PsiUtil.isLanguageLevel7OrHigher(context) && CommonClassNames.JAVA_LANG_STRING.equals(resolvedClass.getQualifiedName())); |
| } |
| return type.equals(PsiType.INT) || type.equals(PsiType.BYTE) || type.equals(PsiType.SHORT) || type.equals(PsiType.CHAR); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return TEXT; |
| } |
| |
| @NotNull |
| @Override |
| public String getText() { |
| return getFamilyName(); |
| } |
| } |