/*
* Copyright 2013 The authors
* 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.struts2.reference.jsp;
import com.intellij.codeInsight.daemon.EmptyResolveMessageProvider;
import com.intellij.codeInsight.lookup.LookupElement;
import com.intellij.codeInsight.lookup.LookupElementBuilder;
import com.intellij.openapi.util.Comparing;
import com.intellij.psi.*;
import com.intellij.psi.xml.XmlAttributeValue;
import com.intellij.psi.xml.XmlTag;
import com.intellij.struts2.dom.struts.model.StrutsManager;
import com.intellij.struts2.dom.struts.model.StrutsModel;
import com.intellij.struts2.dom.struts.strutspackage.StrutsPackage;
import com.intellij.util.ArrayUtil;
import com.intellij.util.Function;
import com.intellij.util.ProcessingContext;
import com.intellij.util.SmartList;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import java.util.List;
/**
* Custom tags attribute "namespace".
*
* @author Yann Cébron
*/
public class NamespaceReferenceProvider extends PsiReferenceProvider {
@NotNull
public PsiReference[] getReferencesByElement(@NotNull final PsiElement psiElement,
@NotNull final ProcessingContext context) {
final StrutsManager strutsManager = StrutsManager.getInstance(psiElement.getProject());
final StrutsModel strutsModel = strutsManager.getCombinedModel(psiElement);
if (strutsModel == null) {
return PsiReference.EMPTY_ARRAY;
}
return new PsiReference[]{new NamespaceReference((XmlAttributeValue) psiElement, strutsModel)
};
}
private static class NamespaceReference extends PsiReferenceBase.Poly<XmlAttributeValue>
implements EmptyResolveMessageProvider {
private static final Function<StrutsPackage, LookupElement> STRUTS_PACKAGE_LOOKUP_ELEMENT_FUNCTION =
new Function<StrutsPackage, LookupElement>() {
public LookupElement fun(final StrutsPackage strutsPackage) {
return LookupElementBuilder.create(strutsPackage.getXmlTag(),
strutsPackage.searchNamespace())
.withTypeText(strutsPackage.getName().getStringValue());
}
};
private final StrutsModel strutsModel;
private NamespaceReference(final XmlAttributeValue psiElement, final StrutsModel strutsModel) {
super(psiElement);
this.strutsModel = strutsModel;
}
@NotNull
public ResolveResult[] multiResolve(final boolean incompleteCode) {
final String namespace = myElement.getValue();
final List<ResolveResult> resolveResults = new SmartList<ResolveResult>();
for (final StrutsPackage strutsPackage : strutsModel.getStrutsPackages()) {
if (Comparing.equal(namespace, strutsPackage.searchNamespace())) {
final XmlTag packageTag = strutsPackage.getXmlTag();
assert packageTag != null;
resolveResults.add(new PsiElementResolveResult(packageTag));
}
}
return ArrayUtil.toObjectArray(resolveResults, ResolveResult.class);
}
@NotNull
public Object[] getVariants() {
return ContainerUtil.map2Array(strutsModel.getStrutsPackages(), LookupElement.class,
STRUTS_PACKAGE_LOOKUP_ELEMENT_FUNCTION);
}
@NotNull
public String getUnresolvedMessagePattern() {
return "Cannot resolve namespace '" + getCanonicalText() + "'";
}
}
}