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/*
* Copyright 2000-2013 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.xml.util;
import com.intellij.openapi.paths.PathReference;
import com.intellij.openapi.paths.PathReferenceProvider;
import com.intellij.openapi.paths.DynamicContextProvider;
import com.intellij.openapi.util.TextRange;
import com.intellij.openapi.extensions.Extensions;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiReference;
import com.intellij.psi.ElementManipulators;
import com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.List;
/**
* @author Dmitry Avdeev
*/
public class AnchorPathReferenceProvider implements PathReferenceProvider {
@Override
public boolean createReferences(@NotNull final PsiElement psiElement, @NotNull final List<PsiReference> references, final boolean soft) {
final TextRange range = ElementManipulators.getValueTextRange(psiElement);
final String elementText = psiElement.getText();
final int anchorOffset = elementText.indexOf('#');
if (anchorOffset == -1) {
return false;
}
final boolean dynamic = isDynamic(psiElement, anchorOffset + 1, elementText);
if (dynamic) {
return false;
}
FileReference fileReference = null;
if (range.getStartOffset() != anchorOffset) {
fileReference = findFileReference(references);
if (fileReference == null || fileReference.resolve() == null) {
return false;
}
}
final int pos = elementText.indexOf('?', anchorOffset);
final String anchor;
try {
int endIndex = pos != -1 ? pos : range.getEndOffset();
if (endIndex <= anchorOffset) {
endIndex = anchorOffset + 1;
}
anchor = elementText.substring(anchorOffset + 1, endIndex);
}
catch (StringIndexOutOfBoundsException e) {
throw new RuntimeException(elementText, e);
}
final AnchorReferenceImpl anchorReference = new AnchorReferenceImpl(anchor, fileReference, psiElement, anchorOffset + 1, soft);
references.add(anchorReference);
return false;
}
private static boolean isDynamic(final PsiElement psiElement, final int offset, final String elementText) {
for (DynamicContextProvider provider: Extensions.getExtensions(DynamicContextProvider.EP_NAME)) {
final int dynamicOffset = provider.getOffset(psiElement, offset, elementText);
if (dynamicOffset != offset) {
return true;
}
}
return false;
}
@Nullable
private static FileReference findFileReference(final List<PsiReference> references) {
FileReference fileReference = null;
for (PsiReference reference : references) {
if (reference instanceof FileReference) {
fileReference = ((FileReference)reference).getFileReferenceSet().getLastReference();
break;
}
}
return fileReference;
}
@Override
public PathReference getPathReference(@NotNull final String path, @NotNull final PsiElement element) {
return null;
}
}
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