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/*
* Copyright 2003-2014 Dave Griffith, Bas Leijdekkers
*
* 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.siyeh.ipp.initialization;
import com.intellij.openapi.project.Project;
import com.intellij.psi.*;
import com.intellij.psi.codeStyle.CodeStyleManager;
import com.intellij.refactoring.util.RefactoringUtil;
import com.siyeh.IntentionPowerPackBundle;
import com.siyeh.ipp.base.Intention;
import com.siyeh.ipp.base.PsiElementPredicate;
import com.siyeh.ipp.psiutils.HighlightUtil;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
public class SplitDeclarationAndInitializationIntention extends Intention {
@Override
@NotNull
protected PsiElementPredicate getElementPredicate() {
return new SplitDeclarationAndInitializationPredicate();
}
@Override
public void processIntention(@NotNull PsiElement element) {
final PsiField field = (PsiField)element.getParent();
final PsiExpression initializer = field.getInitializer();
if (initializer == null) {
return;
}
final String initializerText = RefactoringUtil.convertInitializerToNormalExpression(initializer, field.getType()).getText();
final PsiClass containingClass = field.getContainingClass();
if (containingClass == null) {
return;
}
final boolean fieldIsStatic =
field.hasModifierProperty(PsiModifier.STATIC);
final PsiClassInitializer[] classInitializers =
containingClass.getInitializers();
PsiClassInitializer classInitializer = null;
final int fieldOffset = field.getTextOffset();
for (PsiClassInitializer existingClassInitializer : classInitializers) {
final int initializerOffset =
existingClassInitializer.getTextOffset();
if (initializerOffset <= fieldOffset) {
continue;
}
final boolean initializerIsStatic =
existingClassInitializer.hasModifierProperty(
PsiModifier.STATIC);
if (initializerIsStatic == fieldIsStatic) {
classInitializer = existingClassInitializer;
break;
}
}
final PsiManager manager = field.getManager();
final Project project = manager.getProject();
final PsiElementFactory elementFactory =
JavaPsiFacade.getInstance(project).getElementFactory();
if (classInitializer == null) {
classInitializer = elementFactory.createClassInitializer();
classInitializer = (PsiClassInitializer)
containingClass.addAfter(classInitializer, field);
// add some whitespace between the field and the class initializer
final PsiElement whitespace =
PsiParserFacade.SERVICE.getInstance(project).createWhiteSpaceFromText("\n");
containingClass.addAfter(whitespace, field);
}
final PsiCodeBlock body = classInitializer.getBody();
@NonNls final String initializationStatementText =
field.getName() + " = " + initializerText + ';';
final PsiExpressionStatement statement =
(PsiExpressionStatement)elementFactory.createStatementFromText(
initializationStatementText, body);
final PsiElement addedElement = body.add(statement);
if (fieldIsStatic) {
final PsiModifierList modifierList =
classInitializer.getModifierList();
if (modifierList != null) {
modifierList.setModifierProperty(PsiModifier.STATIC, true);
}
}
initializer.delete();
CodeStyleManager.getInstance(manager.getProject()).reformat(classInitializer);
HighlightUtil.highlightElement(addedElement,
IntentionPowerPackBundle.message(
"press.escape.to.remove.highlighting.message"));
}
}
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