| /* |
| * Copyright 2007 Sascha Weinreuter |
| * |
| * 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 org.intellij.plugins.relaxNG.references; |
| |
| import com.intellij.openapi.util.Key; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.patterns.PatternCondition; |
| import com.intellij.patterns.XmlAttributeValuePattern; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReference; |
| import com.intellij.psi.PsiReferenceBase; |
| import com.intellij.psi.PsiReferenceProvider; |
| import com.intellij.psi.impl.source.resolve.reference.impl.providers.AttributeValueSelfReference; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.xml.XmlAttribute; |
| import com.intellij.psi.xml.XmlAttributeValue; |
| import com.intellij.psi.xml.XmlDocument; |
| import com.intellij.psi.xml.XmlTag; |
| import com.intellij.util.ProcessingContext; |
| import com.intellij.xml.XmlAttributeDescriptor; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import static com.intellij.patterns.XmlPatterns.xmlAttribute; |
| import static com.intellij.patterns.XmlPatterns.xmlAttributeValue; |
| |
| public class IdRefProvider extends PsiReferenceProvider { |
| public static final HasIdRefTypeCondition HAS_ID_REF_TYPE = new HasIdRefTypeCondition(); |
| public static final HasIdTypeCondition HAS_ID_TYPE = new HasIdTypeCondition(); |
| |
| @Override |
| @NotNull |
| public PsiReference[] getReferencesByElement(@NotNull PsiElement element, @NotNull ProcessingContext context) { |
| final XmlAttributeValue value = (XmlAttributeValue)element; |
| |
| if (hasIdRefType(value)) { |
| return new PsiReference[]{ |
| new IdReference(value) |
| }; |
| } else if (hasIdType(value)) { |
| return new PsiReference[]{ |
| new AttributeValueSelfReference(element) |
| }; |
| } |
| return PsiReference.EMPTY_ARRAY; |
| } |
| |
| private static class IdReference extends PsiReferenceBase<XmlAttributeValue> { |
| |
| private static final Key<XmlAttributeValue> TARGET = Key.create("target"); |
| private static final Key<Set<XmlAttributeValue>> VARIANTS = Key.create("variants"); |
| private static final XmlAttributeValuePattern PATTERN = xmlAttributeValue().withParent(xmlAttribute()).with(HAS_ID_TYPE); |
| |
| private final AttributeValueCondition myCondition; |
| |
| public IdReference(XmlAttributeValue element) { |
| super(element, TextRange.from(1, element.getTextLength() - 2), true); |
| myCondition = new AttributeValueCondition(element.getValue()); |
| } |
| |
| @Override |
| public PsiElement resolve() { |
| final ProcessingContext context = new ProcessingContext(); |
| final ResolvingVisitor visitor = new ResolvingVisitor(PATTERN.with(myCondition).save(TARGET), context) { |
| @Override |
| public void visitXmlTag(XmlTag tag) { |
| super.visitXmlTag(tag); |
| if (shouldContinue()) { |
| visitSubTags(tag); |
| } |
| } |
| @Override |
| protected boolean shouldContinue() { |
| return context.get(TARGET) == null; |
| } |
| }; |
| |
| process(visitor); |
| |
| return context.get(TARGET); |
| } |
| |
| private void process(ResolvingVisitor visitor) { |
| final XmlDocument document = PsiTreeUtil.getParentOfType(getElement(), XmlDocument.class); |
| if (document != null) { |
| visitor.execute(document); |
| } |
| } |
| |
| @Override |
| @NotNull |
| public Object[] getVariants() { |
| final ProcessingContext context = new ProcessingContext(); |
| context.put(VARIANTS, new HashSet<XmlAttributeValue>()); |
| |
| final ResolvingVisitor visitor = new ResolvingVisitor(PATTERN.with(AddValueCondition.create(VARIANTS)), context) { |
| @Override |
| public void visitXmlTag(XmlTag tag) { |
| super.visitXmlTag(tag); |
| visitSubTags(tag); |
| } |
| }; |
| |
| process(visitor); |
| |
| return AttributeValueFunction.toStrings(context.get(VARIANTS)); |
| } |
| } |
| |
| private static boolean hasIdType(XmlAttributeValue xmlAttributeValue) { |
| final XmlAttributeDescriptor descriptor = ((XmlAttribute)xmlAttributeValue.getParent()).getDescriptor(); |
| return descriptor != null && descriptor.hasIdType(); |
| } |
| |
| private static boolean hasIdRefType(XmlAttributeValue xmlAttributeValue) { |
| final XmlAttributeDescriptor descriptor = ((XmlAttribute)xmlAttributeValue.getParent()).getDescriptor(); |
| return descriptor != null && descriptor.hasIdRefType(); |
| } |
| |
| static class HasIdTypeCondition extends PatternCondition<XmlAttributeValue> { |
| public HasIdTypeCondition() { |
| super("IdType"); |
| } |
| |
| @Override |
| public boolean accepts(@NotNull XmlAttributeValue xmlAttributeValue, ProcessingContext context) { |
| return hasIdType(xmlAttributeValue); |
| } |
| } |
| |
| static class HasIdRefTypeCondition extends PatternCondition<XmlAttributeValue> { |
| public HasIdRefTypeCondition() { |
| super("IdRef"); |
| } |
| |
| @Override |
| public boolean accepts(@NotNull XmlAttributeValue xmlAttributeValue, ProcessingContext context) { |
| return hasIdRefType(xmlAttributeValue); |
| } |
| } |
| } |