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/*
* Copyright 2000-2010 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.psi.impl.source.html;
import com.intellij.openapi.util.Key;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.ResolveState;
import com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReferenceUtil;
import com.intellij.psi.scope.PsiScopeProcessor;
import com.intellij.psi.search.PsiElementProcessor;
import com.intellij.psi.util.CachedValue;
import com.intellij.psi.util.CachedValueProvider;
import com.intellij.psi.util.CachedValuesManager;
import com.intellij.psi.xml.*;
import com.intellij.xml.XmlElementDescriptor;
import com.intellij.xml.util.HtmlPsiUtil;
import com.intellij.xml.util.XmlPsiUtil;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.List;
/**
* @author Maxim.Mossienko
*/
public class ScriptSupportUtil {
private static final Key<CachedValue<XmlTag[]>> CachedScriptTagsKey = Key.create("script tags");
private static final ThreadLocal<String> ProcessingDeclarationsFlag = new ThreadLocal<String>();
private static final @NonNls String SCRIPT_TAG = "script";
private ScriptSupportUtil() {
}
public static void clearCaches(XmlFile element) {
element.putUserData(CachedScriptTagsKey,null);
}
public static boolean processDeclarations(final XmlFile element,
PsiScopeProcessor processor,
ResolveState state,
PsiElement lastParent,
PsiElement place) {
CachedValue<XmlTag[]> myCachedScriptTags = element.getUserData(CachedScriptTagsKey);
if (myCachedScriptTags == null) {
myCachedScriptTags = CachedValuesManager.getManager(element.getProject())
.createCachedValue(new CachedValueProvider<XmlTag[]>() {
@Override
public Result<XmlTag[]> compute() {
final List<XmlTag> scriptTags = new ArrayList<XmlTag>();
final XmlDocument document = HtmlPsiUtil.getRealXmlDocument(element.getDocument());
if (document != null) {
PsiElementProcessor psiElementProcessor = new PsiElementProcessor() {
public boolean execute(@NotNull final PsiElement element) {
if (element instanceof XmlTag) {
final XmlTag tag = (XmlTag)element;
if (SCRIPT_TAG.equalsIgnoreCase(tag.getName())) {
final XmlElementDescriptor descriptor = tag.getDescriptor();
if (descriptor != null && SCRIPT_TAG.equals(descriptor.getName())) {
scriptTags.add(tag);
}
}
}
return true;
}
};
XmlPsiUtil.processXmlElements(document, psiElementProcessor, true);
}
return new Result<XmlTag[]>(scriptTags.toArray(new XmlTag[scriptTags.size()]), element);
}
}, false);
element.putUserData(CachedScriptTagsKey, myCachedScriptTags);
}
if (ProcessingDeclarationsFlag.get() != null) return true;
try {
ProcessingDeclarationsFlag.set("");
for (XmlTag tag : myCachedScriptTags.getValue()) {
final XmlTagChild[] children = tag.getValue().getChildren();
for (XmlTagChild child : children) {
if (!child.processDeclarations(processor, state, null, place)) return false;
}
if (tag.getAttributeValue("src") != null) {
final XmlAttribute attribute = tag.getAttribute("src", null);
if (attribute != null) {
final PsiFile psiFile = FileReferenceUtil.findFile(attribute.getValueElement());
if (psiFile != null && psiFile.isValid()) {
if (!psiFile.processDeclarations(processor, state, null, place)) {
return false;
}
}
}
}
}
}
finally {
ProcessingDeclarationsFlag.set(null);
}
return true;
}
}
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