org.eknet.wicket.commons.components.navlist.ListItemWrapper.java Source code

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Here is the source code for org.eknet.wicket.commons.components.navlist.ListItemWrapper.java

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/*
 * Copyright 2011 Eike Kettner
 *
 * 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 org.eknet.wicket.commons.components.navlist;

import org.apache.wicket.Component;
import org.apache.wicket.MarkupContainer;
import org.apache.wicket.behavior.Behavior;
import org.apache.wicket.request.Response;

import java.util.Iterator;

/**
 * @author <a href="mailto:eike.kettner@gmail.com">Eike Kettner</a>
 * @since 17.12.11 08:44
 */
class ListItemWrapper extends Behavior {

    private boolean isChildVisible(Component component) {
        if (component instanceof MarkupContainer) {
            MarkupContainer container = (MarkupContainer) component;
            Iterator<Component> iter = container.iterator();
            if (iter.hasNext()) {
                Component child = iter.next();
                return child.isVisible() && child.isActionAuthorized(Component.RENDER);
            }
        }
        return true;
    }

    @Override
    public void beforeRender(Component component) {
        super.beforeRender(component);
        if (isChildVisible(component)) {
            Response response = component.getResponse();
            response.write("<li>");
        }
    }

    @Override
    public void afterRender(Component component) {
        super.afterRender(component);
        if (isChildVisible(component)) {
            Response response = component.getResponse();
            response.write("</li>");
        }
    }
}