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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.CodeInsightBundle;
import com.intellij.codeInsight.CodeInsightUtilBase;
import com.intellij.codeInsight.FileModificationService;
import com.intellij.codeInsight.intention.IntentionAction;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.ScrollType;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.*;
import com.intellij.psi.util.PsiTypesUtil;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
public class AddVariableInitializerFix implements IntentionAction {
private static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.daemon.impl.quickfix.AddReturnFix");
private final PsiVariable myVariable;
public AddVariableInitializerFix(PsiVariable variable) {
myVariable = variable;
}
@Override
@NotNull
public String getText() {
return CodeInsightBundle.message("quickfix.add.variable.text", myVariable.getName());
}
@Override
@NotNull
public String getFamilyName() {
return CodeInsightBundle.message("quickfix.add.variable.family.name");
}
@Override
public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
return myVariable != null
&& myVariable.isValid()
&& myVariable.getManager().isInProject(myVariable)
&& !myVariable.hasInitializer()
&& !(myVariable instanceof PsiParameter)
;
}
@Override
public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException {
if (!FileModificationService.getInstance().prepareFileForWrite(myVariable.getContainingFile())) return;
String initializerText = suggestInitializer();
PsiElementFactory factory = JavaPsiFacade.getInstance(myVariable.getProject()).getElementFactory();
PsiExpression initializer = factory.createExpressionFromText(initializerText, myVariable);
if (myVariable instanceof PsiLocalVariable) {
((PsiLocalVariable)myVariable).setInitializer(initializer);
}
else if (myVariable instanceof PsiField) {
((PsiField)myVariable).setInitializer(initializer);
}
else {
LOG.error("Unknown variable type: "+myVariable);
}
PsiVariable var = CodeInsightUtilBase.forcePsiPostprocessAndRestoreElement(myVariable);
TextRange range = var.getInitializer().getTextRange();
int offset = range.getStartOffset();
editor.getCaretModel().moveToOffset(offset);
editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
editor.getSelectionModel().setSelection(range.getStartOffset(), range.getEndOffset());
}
private String suggestInitializer() {
PsiType type = myVariable.getType();
return PsiTypesUtil.getDefaultValueOfType(type);
}
@Override
public boolean startInWriteAction() {
return true;
}
}
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