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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.
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package org.apache.cayenne.modeler.action;

import java.awt.event.ActionEvent;

import org.apache.cayenne.configuration.ConfigurationNode;
import org.apache.cayenne.configuration.event.ProcedureParameterEvent;
import org.apache.cayenne.map.Procedure;
import org.apache.cayenne.map.ProcedureParameter;
import org.apache.cayenne.map.event.MapEvent;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.dialog.ConfirmRemoveDialog;

/**
 * Removes currently selected parameter from the current procedure.
 * 
 */
public class RemoveProcedureParameterAction extends RemoveAction {

    private final static String ACTION_NAME = "Remove Parameter";

    /**
     * Name of action if multiple rels are selected
     */
    private final static String ACTION_NAME_MULTIPLE = "Remove Parameters";

    public static String getActionName(boolean multiple) {
        return multiple ? ACTION_NAME_MULTIPLE : ACTION_NAME;
    }

    public static String getActionName() {
        return ACTION_NAME;
    }

    public RemoveProcedureParameterAction(Application application) {
        super(ACTION_NAME, application);
    }

    /**
     * Returns <code>true</code> if last object in the path contains a removable
     * parameter.
     */
    @Override
    public boolean enableForPath(ConfigurationNode object) {
        if (object == null) {
            return false;
        }

        return object instanceof ProcedureParameter;
    }

    @Override
    public void performAction(ActionEvent e, boolean allowAsking) {
        ConfirmRemoveDialog dialog = getConfirmDeleteDialog(allowAsking);

        ProcedureParameter[] params = getProjectController()
                .getCurrentProcedureParameters();
        if (params.length > 0) {
            if ((params.length == 1 && dialog.shouldDelete(
                    "procedure parameter",
                    params[0].getName()))
                    || (params.length > 1 && dialog
                            .shouldDelete("selected procedure parameters"))) {
                removeProcedureParameters();
            }
        }
    }

    protected void removeProcedureParameters() {
        ProjectController mediator = getProjectController();
        ProcedureParameter[] parameters = mediator.getCurrentProcedureParameters();
        removeProcedureParameters(mediator.getCurrentProcedure(), parameters);
    }

    public void removeProcedureParameters(
            Procedure procedure,
            ProcedureParameter[] parameters) {
        ProjectController mediator = getProjectController();

        for (ProcedureParameter parameter : parameters) {

            procedure.removeCallParameter(parameter.getName());

            ProcedureParameterEvent e = new ProcedureParameterEvent(Application
                    .getFrame(), parameter, MapEvent.REMOVE);

            mediator.fireProcedureParameterEvent(e);
        }
    }
}