| /* |
| * Copyright 2000-2009 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.CodeInsightBundle; |
| import com.intellij.codeInsight.intention.PsiElementBaseIntentionAction; |
| import com.intellij.openapi.editor.CaretModel; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Pair; |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.psi.util.TypeConversionUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author dsl |
| */ |
| public class MakeTypeGenericAction extends PsiElementBaseIntentionAction { |
| private String variableName; |
| private String newTypeName; |
| |
| @Override |
| @NotNull |
| public String getFamilyName() { |
| return CodeInsightBundle.message("intention.make.type.generic.family"); |
| } |
| |
| @Override |
| @NotNull |
| public String getText() { |
| return CodeInsightBundle.message("intention.make.type.generic.text", variableName, newTypeName); |
| } |
| |
| @Override |
| public boolean isAvailable(@NotNull Project project, Editor editor, @NotNull PsiElement element) { |
| if (!PsiUtil.isLanguageLevel5OrHigher(element)) return false; |
| if (!element.isWritable()) return false; |
| return findVariable(element) != null; |
| } |
| |
| private Pair<PsiVariable,PsiType> findVariable(final PsiElement element) { |
| PsiVariable variable = null; |
| PsiElement elementParent = element.getParent(); |
| if (element instanceof PsiIdentifier) { |
| if (elementParent instanceof PsiVariable) { |
| variable = (PsiVariable)elementParent; |
| } |
| } |
| else if (element instanceof PsiJavaToken) { |
| final PsiJavaToken token = (PsiJavaToken)element; |
| if (token.getTokenType() != JavaTokenType.EQ) return null; |
| if (elementParent instanceof PsiVariable) { |
| variable = (PsiVariable)elementParent; |
| } |
| } |
| if (variable == null) return null; |
| variableName = variable.getName(); |
| final PsiExpression initializer = variable.getInitializer(); |
| if (initializer == null) return null; |
| final PsiType variableType = variable.getType(); |
| final PsiType initializerType = initializer.getType(); |
| if (!(variableType instanceof PsiClassType)) return null; |
| final PsiClassType variableClassType = (PsiClassType) variableType; |
| if (!variableClassType.isRaw()) return null; |
| if (!(initializerType instanceof PsiClassType)) return null; |
| final PsiClassType initializerClassType = (PsiClassType) initializerType; |
| if (initializerClassType.isRaw()) return null; |
| final PsiClassType.ClassResolveResult variableResolveResult = variableClassType.resolveGenerics(); |
| final PsiClassType.ClassResolveResult initializerResolveResult = initializerClassType.resolveGenerics(); |
| if (initializerResolveResult.getElement() == null) return null; |
| PsiClass variableResolved = variableResolveResult.getElement(); |
| PsiSubstitutor targetSubstitutor = TypeConversionUtil.getClassSubstitutor(variableResolved, initializerResolveResult.getElement(), initializerResolveResult.getSubstitutor()); |
| if (targetSubstitutor == null) return null; |
| PsiType type = JavaPsiFacade.getInstance(variable.getProject()).getElementFactory().createType(variableResolved, targetSubstitutor); |
| if (variableType.equals(type)) return null; |
| newTypeName = type.getCanonicalText(); |
| return Pair.create(variable, type); |
| } |
| |
| @Override |
| public void invoke(@NotNull Project project, Editor editor, @NotNull PsiElement element) throws IncorrectOperationException { |
| Pair<PsiVariable, PsiType> pair = findVariable(element); |
| if (pair == null) return; |
| PsiVariable variable = pair.getFirst(); |
| PsiType type = pair.getSecond(); |
| |
| variable.getTypeElement().replace(JavaPsiFacade.getInstance(variable.getProject()).getElementFactory().createTypeElement(type)); |
| } |
| } |