de.alpharogroup.wicket.header.contributors.HeaderResponseExtensions.java Source code

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Here is the source code for de.alpharogroup.wicket.header.contributors.HeaderResponseExtensions.java

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/**
 * Copyright (C) 2010 Asterios Raptis
 *
 * 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 de.alpharogroup.wicket.header.contributors;

import java.util.Set;

import org.apache.wicket.markup.head.CssHeaderItem;
import org.apache.wicket.markup.head.CssReferenceHeaderItem;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.JavaScriptHeaderItem;
import org.apache.wicket.markup.head.JavaScriptReferenceHeaderItem;
import org.apache.wicket.request.resource.CssResourceReference;
import org.apache.wicket.request.resource.JavaScriptResourceReference;

import de.alpharogroup.wicket.PackageResourceReferenceWrapper;
import de.alpharogroup.wicket.PackageResourceReferences;
import de.alpharogroup.wicket.base.enums.ResourceReferenceType;

/**
 * The Class WicketComponentExtensions is a helper class for the migration from wicket-version 1.4.x
 * to 1.5.x or 1.5.x to 6.1.0.
 * 
 * @author Asterios Raptis
 */
public final class HeaderResponseExtensions {

    /**
     * Render header response.
     * 
     * @param response
     *            the response
     * @param componentClass
     *            the component class
     */
    public static void renderHeaderResponse(final IHeaderResponse response, final Class<?> componentClass) {
        final Set<PackageResourceReferenceWrapper> headerContributors = PackageResourceReferences.getInstance()
                .getPackageResourceReference(componentClass);
        if ((null != headerContributors) && !headerContributors.isEmpty()) {
            for (final PackageResourceReferenceWrapper packageResourceReference : headerContributors) {
                if (packageResourceReference.getType().equals(ResourceReferenceType.JS)) {
                    final JavaScriptResourceReference reference = new JavaScriptResourceReference(componentClass,
                            packageResourceReference.getPackageResourceReference().getName());
                    if (!response.wasRendered(reference)) {
                        final JavaScriptReferenceHeaderItem headerItem = JavaScriptHeaderItem
                                .forReference(reference);
                        response.render(headerItem);
                    }
                }
                if (packageResourceReference.getType().equals(ResourceReferenceType.CSS)) {
                    final CssResourceReference reference = new CssResourceReference(componentClass,
                            packageResourceReference.getPackageResourceReference().getName());
                    if (!response.wasRendered(reference)) {
                        final CssReferenceHeaderItem headerItem = CssHeaderItem.forReference(reference);
                        response.render(headerItem);
                    }
                }
            }
        }
    }

}