| /* |
| * Copyright 2000-2012 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.codeInspection; |
| |
| import com.intellij.codeInsight.FileModificationService; |
| import com.intellij.ide.SelectInEditorManager; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.pom.Navigatable; |
| import com.intellij.psi.*; |
| import com.intellij.psi.codeStyle.CodeStyleManager; |
| import com.intellij.psi.util.PsiTypesUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author Danila Ponomarenko |
| */ |
| public class ReplaceWithTernaryOperatorFix implements LocalQuickFix { |
| private final String myText; |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionsBundle.message("inspection.replace.ternary.quickfix", myText); |
| } |
| |
| public ReplaceWithTernaryOperatorFix(@NotNull PsiExpression expressionToAssert) { |
| myText = expressionToAssert.getText(); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return InspectionsBundle.message("inspection.surround.if.family"); |
| } |
| |
| @Override |
| public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) { |
| PsiElement element = descriptor.getPsiElement(); |
| while (true) { |
| PsiElement parent = element.getParent(); |
| if (parent instanceof PsiReferenceExpression || parent instanceof PsiMethodCallExpression) { |
| element = parent; |
| } else { |
| break; |
| } |
| } |
| if (!(element instanceof PsiExpression)) { |
| return; |
| } |
| final PsiExpression expression = (PsiExpression)element; |
| |
| final PsiFile file = expression.getContainingFile(); |
| if (!FileModificationService.getInstance().prepareFileForWrite(file)) return; |
| PsiConditionalExpression conditionalExpression = replaceWthConditionalExpression(project, myText + "!=null", expression, suggestDefaultValue(expression)); |
| |
| PsiExpression elseExpression = conditionalExpression.getElseExpression(); |
| if (elseExpression != null) { |
| ((Navigatable)elseExpression).navigate(true); |
| SelectInEditorManager.getInstance(project).selectInEditor(file.getVirtualFile(), elseExpression.getTextRange().getStartOffset(), elseExpression.getTextRange().getEndOffset(), false, true); |
| } |
| } |
| |
| @NotNull |
| private static PsiConditionalExpression replaceWthConditionalExpression(@NotNull Project project, |
| @NotNull String condition, |
| @NotNull PsiExpression expression, |
| @NotNull String defaultValue) { |
| final PsiElementFactory factory = JavaPsiFacade.getInstance(project).getElementFactory(); |
| |
| final PsiElement parent = expression.getParent(); |
| final PsiConditionalExpression conditionalExpression = (PsiConditionalExpression)factory.createExpressionFromText( |
| condition + " ? " + expression.getText() + " : " + defaultValue, |
| parent |
| ); |
| |
| final CodeStyleManager codeStyleManager = CodeStyleManager.getInstance(project); |
| return (PsiConditionalExpression)expression.replace( codeStyleManager.reformat(conditionalExpression)); |
| } |
| |
| public static boolean isAvailable(@NotNull PsiExpression qualifier, @NotNull PsiExpression expression) { |
| if (!qualifier.isValid() || qualifier.getText() == null) { |
| return false; |
| } |
| |
| return !(expression.getParent() instanceof PsiExpressionStatement); |
| } |
| |
| private static String suggestDefaultValue(@NotNull PsiExpression expression) { |
| PsiType type = expression.getType(); |
| return PsiTypesUtil.getDefaultValueOfType(type); |
| } |
| } |