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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.ExceptionUtil;
import com.intellij.codeInsight.FileModificationService;
import com.intellij.codeInsight.daemon.QuickFixBundle;
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.PsiTreeUtil;
import org.jetbrains.annotations.NotNull;
import java.util.Collections;
/**
* @author mike
*/
public class AddRuntimeExceptionToThrowsAction implements IntentionAction {
@Override
public boolean startInWriteAction() {
return false;
}
@Override
@NotNull
public String getText() {
return QuickFixBundle.message("add.runtime.exception.to.throws.text");
}
@Override
public void invoke(@NotNull final Project project, Editor editor, PsiFile file) {
if (!FileModificationService.getInstance().prepareFileForWrite(file)) return;
PsiDocumentManager.getInstance(project).commitAllDocuments();
PsiClassType aClass = getRuntimeExceptionAtCaret(editor, file);
PsiMethod method = PsiTreeUtil.getParentOfType(elementAtCaret(editor, file), PsiMethod.class);
AddExceptionToThrowsFix.addExceptionsToThrowsList(project, method, Collections.singleton(aClass));
}
private static boolean isMethodThrows(PsiMethod method, PsiClassType exception) {
PsiClassType[] throwsTypes = method.getThrowsList().getReferencedTypes();
for (PsiClassType throwsType : throwsTypes) {
if (throwsType.isAssignableFrom(exception)) {
return true;
}
}
return false;
}
@Override
public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
if (!(file instanceof PsiJavaFile)) return false;
PsiClassType exception = getRuntimeExceptionAtCaret(editor, file);
if (exception == null) return false;
PsiMethod method = PsiTreeUtil.getParentOfType(elementAtCaret(editor, file), PsiMethod.class);
if (method == null || !method.getThrowsList().isPhysical()) return false;
return !isMethodThrows(method, exception);
}
private static PsiClassType getRuntimeExceptionAtCaret(Editor editor, PsiFile file) {
PsiElement element = elementAtCaret(editor, file);
if (element == null) return null;
PsiThrowStatement expression = PsiTreeUtil.getParentOfType(element, PsiThrowStatement.class);
if (expression == null) return null;
PsiExpression exception = expression.getException();
if (exception == null) return null;
PsiType type = exception.getType();
if (!(type instanceof PsiClassType)) return null;
if (!ExceptionUtil.isUncheckedException((PsiClassType)type)) return null;
return (PsiClassType)type;
}
private static PsiElement elementAtCaret(final Editor editor, final PsiFile file) {
int offset = editor.getCaretModel().getOffset();
return file.findElementAt(offset);
}
@Override
@NotNull
public String getFamilyName() {
return QuickFixBundle.message("add.runtime.exception.to.throws.family");
}
}
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