com.adobe.acs.commons.granite.ui.components.impl.include.NamespaceResourceWrapper Maven / Gradle / Ivy

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Core ACS AEM Commons OSGi Bundle. Includes commons utilities.
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/*
 * #%L
 * ACS AEM Commons Bundle
 * %%
 * Copyright (C) 2017 Adobe
 * %%
 * 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.
 * #L%
 */
package com.adobe.acs.commons.granite.ui.components.impl.include;

import com.adobe.granite.ui.components.ExpressionResolver;
import com.adobe.granite.ui.components.FilteringResourceWrapper;
import org.apache.commons.collections.iterators.FilterIterator;
import org.apache.commons.collections.iterators.TransformIterator;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ValueMap;

import javax.annotation.Nonnull;
import java.util.Arrays;
import java.util.Iterator;
import java.util.Optional;


public class NamespaceResourceWrapper extends FilteringResourceWrapper {

    private final ExpressionResolver expressionResolver;

    private final SlingHttpServletRequest request;
    private final String[] namespacedProperties;
    private final ValueMap valueMap;

    public NamespaceResourceWrapper(@Nonnull Resource resource, @Nonnull ExpressionResolver expressionResolver,
                                    @Nonnull SlingHttpServletRequest request, String[] namespacedProperties) {
        super(resource, expressionResolver, request);
        this.expressionResolver = expressionResolver;
        this.request = request;
        this.namespacedProperties = Optional.ofNullable(namespacedProperties)
                .map(array -> Arrays.copyOf(array, array.length))
                .orElse(new String[0]);

        valueMap = new NamespaceDecoratedValueMapBuilder(request, resource, namespacedProperties).build();
    }

    @Override
    public Resource getChild(String relPath) {
        Resource child = super.getChild(relPath);

        if(child == null){
            return null;
        }

        NamespaceResourceWrapper wrapped =new  NamespaceResourceWrapper(child, expressionResolver, request,namespacedProperties);

        if(!isVisible(wrapped)){
            return null;
        }else{
            return wrapped;
        }
    }

    @Override
    public Iterator listChildren() {
        return new TransformIterator(
                new FilterIterator(super.listChildren(),
                        o -> isVisible(new NamespaceResourceWrapper((Resource) o, expressionResolver, request,namespacedProperties))),
                        o -> new NamespaceResourceWrapper((Resource) o, expressionResolver, request,namespacedProperties)
        );
    }

    private boolean isVisible(Resource o) {
        return !o.getValueMap().get("hide", Boolean.FALSE);
    }


    @Override
    public  AdapterType adaptTo(Class type) {

        if(type == ValueMap.class){
              return (AdapterType) getValueMap();
        }

        return super.adaptTo(type);
    }


    @Override
    public ValueMap getValueMap() {
        return valueMap;
    }


}