DeployerPluginSelector.java

/*
 * Jabox Open Source Version
 * Copyright (C) 2009-2010 Dimitris Kapanidis                                                                                                                          
 * 
 * This file is part of Jabox
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package org.jabox.webapp.pages;

import java.util.List;

import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.form.DropDownChoice;
import org.apache.wicket.markup.html.form.IChoiceRenderer;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.CompoundPropertyModel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.LoadableDetachableModel;
import org.apache.wicket.model.PropertyModel;
import org.jabox.apis.Connector;
import org.jabox.apis.IManager;
import org.jabox.model.Server;

import com.google.inject.Inject;

public class DeployerPluginSelector extends Panel {
    private static final long serialVersionUID = -222526477140616108L;

    @Inject
    private IManager _manager;

    @SuppressWarnings("unchecked")
    public DeployerPluginSelector(final String id,
            final IModel<Server> model,
            final Class<? extends Connector> connectorClass) {
        super(id);
        add(new WebMarkupContainer("editor"));
        String pluginId =
            model.getObject().deployerConfig != null ? model.getObject().deployerConfig.pluginId
                    : "-1";
        if (model.getObject().deployerConfig != null) {
            Connector plugin = _manager.getEntry(pluginId);
            DeployerPluginSelector.this.replace(plugin.newEditor("editor",
                new PropertyModel<Server>(model, "deployerConfig")));
        }

        PluginPicker pluginPicker =
            new PluginPicker("picker",
                    new CompoundPropertyModel(pluginId), connectorClass) {
                private static final long serialVersionUID =
                    -5528219523437017579L;

                @Override
                protected void onSelectionChanged(final Object pluginId) {
                    Connector plugin =
                        _manager.getEntry((String) pluginId);
                    model.getObject()
                        .setDeployerConfig(plugin.newConfig());

                    DeployerPluginSelector.this.replace(plugin.newEditor(
                        "editor", new PropertyModel(model,
                            "deployerConfig")));
                }
            };
        pluginPicker.updateModel();
        add(pluginPicker);
    }

    private static abstract class PluginPicker<T> extends
            DropDownChoice<T> {
        private static final long serialVersionUID = 1346317031364661388L;

        @Inject
        private IManager _manager;

        @SuppressWarnings("unchecked")
        public PluginPicker(final String id, final IModel<T> model,
                final Class<? extends Connector> connectorClass) {
            super(id);
            setRequired(true);
            setModel(model);
            setChoices(new LoadableDetachableModel() {
                private static final long serialVersionUID =
                    6694323103247193118L;

                @Override
                protected List<? extends String> load() {
                    // XXX TESTING
                    return _manager.getIds(connectorClass);
                }
            });

            setChoiceRenderer(new IChoiceRenderer() {
                private static final long serialVersionUID =
                    7954936699435378919L;

                public Object getDisplayValue(final Object object) {
                    return _manager.getEntry((String) object).getName();
                }

                public String getIdValue(final Object object,
                        final int index) {
                    return (String) object;
                }
            });
        }

        @Override
        protected boolean wantOnSelectionChangedNotifications() {
            return true;
        }

        @Override
        protected abstract void onSelectionChanged(Object pluginId);
    }

}