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/*
* Copyright 2000-2014 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.refactoring.rename;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFileFactory;
import com.intellij.psi.PsiManager;
import com.intellij.psi.PsiReference;
import com.intellij.psi.search.LocalSearchScope;
import com.intellij.psi.search.searches.ReferencesSearch;
import com.intellij.psi.xml.XmlAttribute;
import com.intellij.psi.xml.XmlAttributeValue;
import com.intellij.psi.xml.XmlFile;
import com.intellij.refactoring.listeners.RefactoringElementListener;
import com.intellij.usageView.UsageInfo;
import com.intellij.util.IncorrectOperationException;
import com.intellij.util.containers.Queue;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class RenameXmlAttributeProcessor extends RenamePsiElementProcessor {
private static final Logger LOG = Logger.getInstance("#com.intellij.refactoring.rename.RenameXmlAttributeProcessor");
@Override
public boolean canProcessElement(@NotNull final PsiElement element) {
return element instanceof XmlAttribute || element instanceof XmlAttributeValue;
}
@Override
public void renameElement(final PsiElement element,
final String newName,
final UsageInfo[] usages,
@Nullable RefactoringElementListener listener) throws IncorrectOperationException {
if (element instanceof XmlAttribute) {
doRenameXmlAttribute((XmlAttribute)element, newName, listener);
}
else if (element instanceof XmlAttributeValue) {
doRenameXmlAttributeValue((XmlAttributeValue)element, newName, usages, listener);
}
}
private static void doRenameXmlAttribute(XmlAttribute attribute,
String newName,
@Nullable RefactoringElementListener listener) {
try {
final PsiElement element = attribute.setName(newName);
if (listener != null) {
listener.elementRenamed(element);
}
}
catch (IncorrectOperationException e) {
LOG.error(e);
}
}
private static void doRenameXmlAttributeValue(@NotNull XmlAttributeValue value,
String newName,
UsageInfo[] infos,
@Nullable RefactoringElementListener listener)
throws IncorrectOperationException {
LOG.assertTrue(value.isValid());
renameAll(value, infos, newName, value.getValue());
PsiManager psiManager = value.getManager();
LOG.assertTrue(psiManager != null);
XmlFile file = (XmlFile)PsiFileFactory.getInstance(psiManager.getProject()).createFileFromText("dummy.xml", "<a attr=\"" + newName + "\"/>");
final PsiElement element = value.replace(file.getDocument().getRootTag().getAttributes()[0].getValueElement());
if (listener != null) {
listener.elementRenamed(element);
}
}
private static void renameAll(PsiElement originalElement, UsageInfo[] infos, String newName,
String originalName) throws IncorrectOperationException {
if (newName.equals(originalName)) return;
Queue<PsiReference> queue = new Queue<PsiReference>(infos.length);
for (UsageInfo info : infos) {
if (info.getElement() == null) continue;
PsiReference ref = info.getReference();
if (ref == null) continue;
queue.addLast(ref);
}
while(!queue.isEmpty()) {
final PsiReference reference = queue.pullFirst();
final PsiElement oldElement = reference.getElement();
if (!oldElement.isValid() || oldElement == originalElement) continue;
final PsiElement newElement = reference.handleElementRename(newName);
if (!oldElement.isValid()) {
for (PsiReference psiReference : ReferencesSearch.search(originalElement, new LocalSearchScope(newElement), false)) {
queue.addLast(psiReference);
}
}
}
}
}
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