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/*
* 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.codeInsight.daemon.impl.quickfix;
import com.intellij.codeInsight.FileModificationService;
import com.intellij.codeInsight.daemon.QuickFixBundle;
import com.intellij.codeInspection.LocalQuickFixAndIntentionActionOnPsiElement;
import com.intellij.ide.util.SuperMethodWarningUtil;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.command.undo.UndoUtil;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.*;
import com.intellij.psi.codeStyle.JavaCodeStyleManager;
import com.intellij.psi.util.TypeConversionUtil;
import com.intellij.refactoring.RefactoringBundle;
import com.intellij.refactoring.changeSignature.ChangeSignatureProcessor;
import com.intellij.refactoring.changeSignature.JavaChangeSignatureDialog;
import com.intellij.refactoring.changeSignature.ParameterInfoImpl;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
public class VariableTypeFix extends LocalQuickFixAndIntentionActionOnPsiElement {
static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.daemon.impl.quickfix.VariableTypeFix");
private final PsiType myReturnType;
protected final String myName;
public VariableTypeFix(@NotNull PsiVariable variable, PsiType toReturn) {
super(variable);
myReturnType = GenericsUtil.getVariableTypeByExpressionType(toReturn);
myName = variable.getName();
}
@NotNull
@Override
public String getText() {
return QuickFixBundle.message("fix.variable.type.text",
myName,
getReturnType().getCanonicalText());
}
@Override
@NotNull
public String getFamilyName() {
return QuickFixBundle.message("fix.variable.type.family");
}
@Override
public boolean isAvailable(@NotNull Project project,
@NotNull PsiFile file,
@NotNull PsiElement startElement,
@NotNull PsiElement endElement) {
final PsiVariable myVariable = (PsiVariable)startElement;
return myVariable.isValid()
&& myVariable.getTypeElement() != null
&& myVariable.getManager().isInProject(myVariable)
&& getReturnType() != null
&& getReturnType().isValid()
&& !TypeConversionUtil.isNullType(getReturnType())
&& !TypeConversionUtil.isVoidType(getReturnType());
}
@Override
public void invoke(@NotNull Project project,
@NotNull PsiFile file,
@Nullable("is null when called from inspection") Editor editor,
@NotNull PsiElement startElement,
@NotNull PsiElement endElement) {
final PsiVariable myVariable = (PsiVariable)startElement;
if (changeMethodSignatureIfNeeded(myVariable)) return;
if (!FileModificationService.getInstance().prepareFileForWrite(myVariable.getContainingFile())) return;
try {
myVariable.normalizeDeclaration();
final PsiTypeElement typeElement = myVariable.getTypeElement();
LOG.assertTrue(typeElement != null, myVariable.getClass());
final PsiTypeElement newTypeElement = JavaPsiFacade.getInstance(file.getProject()).getElementFactory().createTypeElement(getReturnType());
typeElement.replace(newTypeElement);
JavaCodeStyleManager.getInstance(project).shortenClassReferences(myVariable);
UndoUtil.markPsiFileForUndo(file);
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
private boolean changeMethodSignatureIfNeeded(PsiVariable myVariable) {
if (myVariable instanceof PsiParameter) {
final PsiElement scope = ((PsiParameter)myVariable).getDeclarationScope();
if (scope instanceof PsiMethod) {
final PsiMethod method = (PsiMethod)scope;
final PsiMethod psiMethod = SuperMethodWarningUtil.checkSuperMethod(method, RefactoringBundle.message("to.refactor"));
if (psiMethod == null) return true;
final int parameterIndex = method.getParameterList().getParameterIndex((PsiParameter)myVariable);
if (!FileModificationService.getInstance().prepareFileForWrite(psiMethod.getContainingFile())) return true;
final ArrayList<ParameterInfoImpl> infos = new ArrayList<ParameterInfoImpl>();
int i = 0;
for (PsiParameter parameter : psiMethod.getParameterList().getParameters()) {
final boolean changeType = i == parameterIndex;
infos.add(new ParameterInfoImpl(i++, parameter.getName(), changeType ? getReturnType() : parameter.getType()));
}
if (!ApplicationManager.getApplication().isUnitTestMode()) {
final JavaChangeSignatureDialog dialog = new JavaChangeSignatureDialog(psiMethod.getProject(), psiMethod, false, myVariable);
dialog.setParameterInfos(infos);
dialog.show();
}
else {
ChangeSignatureProcessor processor = new ChangeSignatureProcessor(psiMethod.getProject(),
psiMethod,
false, null,
psiMethod.getName(),
psiMethod.getReturnType(),
infos.toArray(new ParameterInfoImpl[infos.size()]));
processor.run();
}
return true;
}
}
return false;
}
protected PsiType getReturnType() {
return myReturnType;
}
}
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