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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.codeInsight.daemon.impl.analysis.HighlightUtil;
import com.intellij.codeInsight.intention.IntentionAction;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.*;
import com.intellij.psi.util.PsiUtil;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
public class GeneralizeCatchFix implements IntentionAction {
private final PsiElement myElement;
private final PsiClassType myUnhandledException;
private PsiTryStatement myTryStatement;
private PsiParameter myCatchParameter;
public GeneralizeCatchFix(PsiElement element, PsiClassType unhandledException) {
myElement = element;
myUnhandledException = unhandledException;
}
@Override
@NotNull
public String getText() {
return QuickFixBundle.message("generalize.catch.text",
HighlightUtil.formatType(myCatchParameter == null ? null : myCatchParameter.getType()),
HighlightUtil.formatType(myUnhandledException));
}
@Override
@NotNull
public String getFamilyName() {
return QuickFixBundle.message("generalize.catch.family");
}
@Override
public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
if (!(myElement != null
&& myElement.isValid()
&& myUnhandledException != null
&& myUnhandledException.isValid()
&& myElement.getManager().isInProject(myElement))) return false;
// find enclosing try
PsiElement element = myElement;
while (element != null) {
if (PsiUtil.isTryBlock(element) || element instanceof PsiResourceList) {
myTryStatement = (PsiTryStatement)element.getParent();
break;
}
if (element instanceof PsiMethod || (element instanceof PsiClass && !(element instanceof PsiAnonymousClass))) break;
element = element.getParent();
}
if (myTryStatement == null) return false;
// check we can generalize at least one catch
PsiParameter[] catchBlockParameters = myTryStatement.getCatchBlockParameters();
for (PsiParameter catchBlockParameter : catchBlockParameters) {
PsiType type = catchBlockParameter.getType();
if (myUnhandledException.isAssignableFrom(type)) {
myCatchParameter = catchBlockParameter;
break;
}
}
return myCatchParameter != null;
}
@Override
public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException {
if (!FileModificationService.getInstance().prepareFileForWrite(myElement.getContainingFile())) return;
PsiElementFactory factory = JavaPsiFacade.getInstance(myElement.getProject()).getElementFactory();
PsiTypeElement type = factory.createTypeElement(myUnhandledException);
myCatchParameter.getTypeElement().replace(type);
}
@Override
public boolean startInWriteAction() {
return true;
}
}
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