org.qi4j.sample.dcicargo.sample_a.infrastructure.wicket.tabs.TabsPanel.java Source code

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Here is the source code for org.qi4j.sample.dcicargo.sample_a.infrastructure.wicket.tabs.TabsPanel.java

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/*
 * Copyright 2011 Marc Grue.
 *
 * 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.qi4j.sample.dcicargo.sample_a.infrastructure.wicket.tabs;

import java.util.LinkedHashMap;
import java.util.Map;
import org.apache.wicket.Application;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.MetaDataKey;
import org.apache.wicket.Page;
import org.apache.wicket.devutils.stateless.StatelessComponent;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.markup.repeater.RepeatingView;

/**
 * Tabs panel that stores tab data as application meta data.
 */
@StatelessComponent
public class TabsPanel extends Panel {
    public static final MetaDataKey<LinkedHashMap<Class, String[]>> TABS_PANEL_KEY = new MetaDataKey<LinkedHashMap<Class, String[]>>() {
        public static final long serialVersionUID = 1L;
    };

    public static <T extends Page> void registerTab(Application app, Class<T> clazz, String ref, String label) {
        Map<Class, String[]> tabsInfo = app.getMetaData(TABS_PANEL_KEY);

        if (tabsInfo == null || tabsInfo.isEmpty()) {
            tabsInfo = new LinkedHashMap<Class, String[]>();
        }

        tabsInfo.put(clazz, new String[] { ref, label });
        app.setMetaData(TABS_PANEL_KEY, tabsInfo);
    }

    @SuppressWarnings("unchecked")
    public TabsPanel(String activeTab) {
        super("tabsPanel");

        Map<Class, String[]> tabs = getApplication().getMetaData(TABS_PANEL_KEY);
        if (tabs == null || tabs.isEmpty()) {
            throw new RuntimeException("Please register one or more tabs.");
        }

        RepeatingView tabsView = new RepeatingView("tabsView");

        // Loop "mounted" tabs
        for (Map.Entry<Class, String[]> tab : tabs.entrySet()) {
            Class pageClass = tab.getKey();
            String tabReference = tab.getValue()[0];
            String tabLabel = tab.getValue()[1];

            WebMarkupContainer tabView = new WebMarkupContainer(tabsView.newChildId());
            if (tabReference.equals(activeTab)) {
                tabView.add(new AttributeModifier("id", "current"));
            }

            BookmarkablePageLink link = new BookmarkablePageLink("link", pageClass); // unchecked

            Label label = new Label("label", tabLabel);

            tabsView.add(tabView.add(link.add(label)));
        }
        add(tabsView);
    }
}