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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.psi.filters.position;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.filters.ElementFilter;
import com.intellij.psi.xml.*;
import com.intellij.util.ReflectionUtil;
import org.jetbrains.annotations.NonNls;
public class NamespaceFilter implements ElementFilter {
private final String[] myNamespaces;
public NamespaceFilter(@NonNls String... namespaces){
myNamespaces = namespaces;
}
public boolean isClassAcceptable(Class hintClass){
return ReflectionUtil.isAssignable(XmlTag.class, hintClass) || ReflectionUtil.isAssignable(XmlDocument.class, hintClass);
}
public boolean isAcceptable(Object element, PsiElement context){
if(element instanceof XmlTag){
final XmlTag psiElement = (XmlTag)element;
if (!psiElement.isValid()) return false;
final String ns = psiElement.getNamespace();
if (isNamespaceAcceptable(ns)) return true;
final PsiFile psiFile = psiElement.getContainingFile();
if (psiFile instanceof XmlFile) {
// We use file references for as dtd namespace
// But we should also check PUBLIC ID for namespace
final XmlProlog prolog = ((XmlFile)psiFile).getDocument().getProlog();
if (prolog != null) {
final XmlDoctype doctype = prolog.getDoctype();
if (doctype != null) {
final String publicId = doctype.getPublicId();
if (publicId != null) {
if (isNamespaceAcceptable(publicId)) return true;
}
}
}
}
}
else if(element instanceof XmlDocument){
return isAcceptable(((XmlDocument) element).getRootTag(), context);
}
return false;
}
protected boolean isNamespaceAcceptable(String ns) {
for (String aMyValue : myNamespaces) {
if (aMyValue.equals(ns)) return true;
}
return false;
}
}
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