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/*****************************************************************
 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.apache.cayenne.modeler.action;

import java.awt.event.ActionEvent;

import org.apache.cayenne.access.dbsync.SkipSchemaUpdateStrategy;
import org.apache.cayenne.configuration.ConfigurationNode;
import org.apache.cayenne.configuration.DataChannelDescriptor;
import org.apache.cayenne.configuration.DataNodeDescriptor;
import org.apache.cayenne.configuration.event.DataNodeEvent;
import org.apache.cayenne.configuration.server.XMLPoolingDataSourceFactory;
import org.apache.cayenne.conn.DataSourceInfo;
import org.apache.cayenne.map.event.MapEvent;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.event.DataNodeDisplayEvent;
import org.apache.cayenne.modeler.undo.CreateNodeUndoableEdit;
import org.apache.cayenne.modeler.util.CayenneAction;
import org.apache.cayenne.util.NamedObjectFactory;

/**
 */
public class CreateNodeAction extends CayenneAction {

    public static String getActionName() {
        return "Create DataNode";
    }

    /**
     * Constructor for CreateNodeAction.
     * 
     * @param location
     */
    public CreateNodeAction(Application application) {
        super(getActionName(), application);
    }

    public String getIconName() {
        return "icon-node.gif";
    }

    /**
     * @see org.apache.cayenne.modeler.util.CayenneAction#performAction(ActionEvent)
     */
    public void performAction(ActionEvent e) {
        DataNodeDescriptor node = buildDataNode();
        createDataNode(node);
        application.getUndoManager().addEdit(
                new CreateNodeUndoableEdit(application, node));
    }

    public void createDataNode(DataNodeDescriptor node) {
        DataChannelDescriptor domain = (DataChannelDescriptor) getProjectController()
                .getProject()
                .getRootNode();
        domain.getNodeDescriptors().add(node);
        getProjectController().fireDataNodeEvent(
                new DataNodeEvent(this, node, MapEvent.ADD));
        getProjectController().fireDataNodeDisplayEvent(
                new DataNodeDisplayEvent(this, domain, node));
    }

    /**
     * Returns true if path contains a DataDomain object.
     */
    public boolean enableForPath(ConfigurationNode object) {
        if (object == null) {
            return false;
        }

        return ((DataNodeDescriptor) object).getDataChannelDescriptor() != null;
    }

    /**
     * Creates a new DataNode, adding to the current domain, but doesn't send any events.
     */
    public DataNodeDescriptor buildDataNode() {
        ProjectController mediator = getProjectController();
        DataChannelDescriptor domain = (DataChannelDescriptor) mediator
                .getProject()
                .getRootNode();

        DataNodeDescriptor node = buildDataNode(domain);

        DataSourceInfo src = new DataSourceInfo();
        node.setDataSourceDescriptor(src);

        // by default create JDBC Node
        node.setDataSourceFactoryType(XMLPoolingDataSourceFactory.class.getName());
        node.setSchemaUpdateStrategyType(SkipSchemaUpdateStrategy.class.getName());

        return node;
    }

    /**
     * A factory method that makes a new DataNode.
     */
    DataNodeDescriptor buildDataNode(DataChannelDescriptor domain) {
        String name = NamedObjectFactory.createName(
                DataNodeDescriptor.class,
                domain);

        DataNodeDescriptor node = new DataNodeDescriptor(name);
        node.setDataChannelDescriptor(domain);

        return node;
    }
}