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/*
* 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.daemon.impl.quickfix;
import com.intellij.codeInsight.FileModificationService;
import com.intellij.codeInsight.daemon.QuickFixBundle;
import com.intellij.codeInspection.LocalQuickFixAndIntentionActionOnPsiElement;
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.openapi.util.Comparing;
import com.intellij.psi.*;
import com.intellij.psi.codeStyle.JavaCodeStyleManager;
import com.intellij.psi.codeStyle.SuggestedNameInfo;
import com.intellij.psi.codeStyle.VariableKind;
import com.intellij.psi.util.PsiUtil;
import com.intellij.psi.util.TypeConversionUtil;
import com.intellij.refactoring.changeSignature.ChangeSignatureProcessor;
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;
import java.util.List;
public class MethodParameterFix extends LocalQuickFixAndIntentionActionOnPsiElement {
private static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.daemon.impl.quickfix.MethodReturnFix");
private final PsiType myParameterType;
private final int myIndex;
private final boolean myFixWholeHierarchy;
private final String myName;
public MethodParameterFix(PsiMethod method, PsiType type, int index, boolean fixWholeHierarchy) {
super(method);
myParameterType = type;
myIndex = index;
myFixWholeHierarchy = fixWholeHierarchy;
myName = method.getName();
}
@NotNull
@Override
public String getText() {
return QuickFixBundle.message("fix.parameter.type.text",
myName,
myParameterType.getCanonicalText() );
}
@Override
@NotNull
public String getFamilyName() {
return QuickFixBundle.message("fix.parameter.type.family");
}
@Override
public boolean isAvailable(@NotNull Project project,
@NotNull PsiFile file,
@NotNull PsiElement startElement,
@NotNull PsiElement endElement) {
final PsiMethod myMethod = (PsiMethod)startElement;
return myMethod.isValid()
&& myMethod.getManager().isInProject(myMethod)
&& myParameterType != null
&& !TypeConversionUtil.isNullType(myParameterType)
&& myMethod.getReturnType() != null
&& !Comparing.equal(myParameterType, myMethod.getReturnType());
}
@Override
public void invoke(@NotNull final Project project,
@NotNull final PsiFile file,
@Nullable("is null when called from inspection") Editor editor,
@NotNull PsiElement startElement,
@NotNull PsiElement endElement) {
final PsiMethod myMethod = (PsiMethod)startElement;
if (!FileModificationService.getInstance().prepareFileForWrite(myMethod.getContainingFile())) return;
try {
PsiMethod method = myMethod;
if (myFixWholeHierarchy) {
method = myMethod.findDeepestSuperMethod();
if (method == null) method = myMethod;
}
final PsiMethod finalMethod = method;
ChangeSignatureProcessor processor = new ChangeSignatureProcessor(project,
finalMethod,
false, null,
finalMethod.getName(),
finalMethod.getReturnType(),
getNewParametersInfo(finalMethod));
processor.run();
UndoUtil.markPsiFileForUndo(file);
}
catch (IncorrectOperationException e) {
LOG.error(e);
}
}
private ParameterInfoImpl[] getNewParametersInfo(PsiMethod method) throws IncorrectOperationException {
List<ParameterInfoImpl> result = new ArrayList<ParameterInfoImpl>();
PsiParameter[] parameters = method.getParameterList().getParameters();
PsiElementFactory factory = JavaPsiFacade.getInstance(method.getProject()).getElementFactory();
JavaCodeStyleManager codeStyleManager = JavaCodeStyleManager.getInstance(method.getProject());
SuggestedNameInfo nameInfo = codeStyleManager.suggestVariableName(VariableKind.PARAMETER, null, null, myParameterType);
PsiParameter newParameter = factory.createParameter(nameInfo.names[0], myParameterType);
if (method.getContainingClass().isInterface()) {
PsiUtil.setModifierProperty(newParameter, PsiModifier.FINAL, false);
}
for (int i = 0; i < parameters.length; i++) {
PsiParameter parameter = parameters[i];
if (i == myIndex) {
newParameter.setName(parameter.getName());
parameter = newParameter;
}
result.add(new ParameterInfoImpl(i, parameter.getName(), parameter.getType()));
}
if (parameters.length == myIndex) {
result.add(new ParameterInfoImpl(-1, newParameter.getName(), newParameter.getType()));
}
return result.toArray(new ParameterInfoImpl[result.size()]);
}
}
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