/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.github.cameltooling.idea.reference.blueprint;

import com.intellij.psi.PsiReference;
import com.intellij.psi.xml.XmlAttribute;
import com.intellij.psi.xml.XmlAttributeValue;
import com.intellij.util.ProcessingContext;
import org.jetbrains.annotations.NotNull;

/**
 * Provides references from usages of beans to their declarations.
 *
 * For example - when using bean id in a 'ref' attribute - <property name='xxx' ref='myBean'/>, the myBean is a reference
 * to its declaration - <bean id='myBean' .../>
 */
public class BeanReferenceProvider extends BlueprintAttributeValueReferenceProvider {

    @Override
    protected PsiReference[] getAttributeReferences(@NotNull XmlAttribute attribute, @NotNull XmlAttributeValue value,
                                                    ProcessingContext context) {
        String beanId = attribute.getValue();
        if (beanId != null && beanId.length() > 0) {
            if ("ref".equals(attribute.getLocalName())) {
                return new PsiReference[] {new BeanReference(value, beanId)};
            } else if ("id".equals(attribute.getLocalName())) {
                return new PsiReference[] {new BeanSelfReference(value, beanId)};
            }
        }
        return PsiReference.EMPTY_ARRAY;
    }

}
