net.dontdrinkandroot.wicket.bootstrap.component.item.ExternalLinkItem.java Source code

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Here is the source code for net.dontdrinkandroot.wicket.bootstrap.component.item.ExternalLinkItem.java

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/**
 * Copyright (C) 2012-2014 Philip W. Sorst <philip@sorst.net>
 * and individual contributors as indicated
 * by the @authors tag.
 *
 * 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 net.dontdrinkandroot.wicket.bootstrap.component.item;

import org.apache.wicket.AttributeModifier;
import org.apache.wicket.Component;
import org.apache.wicket.markup.html.link.ExternalLink;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.request.UrlUtils;

public class ExternalLinkItem extends AbstractLinkItem {

    private final IModel<String> hrefModel;

    public ExternalLinkItem(String id, IModel<String> hrefModel, IModel<String> labelModel) {

        super(id, labelModel);
        this.hrefModel = hrefModel;
    }

    @Override
    protected Component createLink(String id) {

        ExternalLink link = new ExternalLink(id, this.hrefModel);

        link.add(new AttributeModifier("rel", new AbstractReadOnlyModel<String>() {

            @Override
            public String getObject() {

                if (UrlUtils.isRelative(ExternalLinkItem.this.hrefModel.getObject())) {
                    return null;
                }
                return "external";
            }
        }));
        link.setBody(this.getModel());
        return link;
    }

}