/*
 This file is part of the software framework JStatCom, 
 a library for building applications for data based analysis.

 Copyright (C) 2000-2005  Markus Kraetzig

 This library is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as
 published by the Free Software Foundation; either version 2.1 of the
 License, or (at your option) any later version.

 This library 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
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 USA
 */

package com.jstatcom.project;

import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.JPopupMenu;

import com.jstatcom.component.CompSettings;
import com.jstatcom.component.StdMessages;

/**
 * Popup menu that is invoked when right clicking on a project tree node. Can be
 * used to edit existing projects and to manage tree nodes themselves.
 * 
 * @author Markus Kraetzig 
 */
public final class ProjectNodePopup extends JPopupMenu {

    /**
     * Saves the current state to the project represented by the underlying tree
     * node.
     */
    private AbstractAction save = new AbstractAction("Save Current State Here") {
        public void actionPerformed(ActionEvent evt) {
            ProjectManager.getInstance().serializeProject(
            currentNode.getProjectFile(), currentNode.getName(),
                    currentNode.getDescription());               
        }
    };

    /**
     * Deletes the tree node and optionally the project file as well.
     */
    private AbstractAction delete = new AbstractAction("Delete") {
        public void actionPerformed(ActionEvent evt) {
            ProjectTree.getInstance().deleteSelectedProjects();
        }
    };

    /**
     * Invokes a dialog to edit all properties of the project corresponding to
     * the underlying project tree node.
     */
    private AbstractAction edit = new AbstractAction("Edit") {
        public void actionPerformed(ActionEvent evt) {
            if (currentNode == null)
                return;
            try {
                getProjectDialog().setProjectNode(currentNode);
                getProjectDialog().setSaveDialog(false);
                getProjectDialog().setVisible(true);
            } catch (Throwable ex) {
                String msg = "There was an error loading the project from\n\""
                        + currentNode.getProjectFile()
                        + "\"\nThe message was:\n" + ex.getMessage();
                StdMessages.error(msg, "Project Edit Error");
            }

            // rest is handled by project dialog on OK
        }
    };

    /**
     * Displays project information in a dialog.
     */
    private AbstractAction info = new AbstractAction("Project Info") {
        public void actionPerformed(ActionEvent evt) {
            if (currentNode == null)
                return;
            String msg = "Name:\n";
            msg = msg + currentNode.getName() + "\n\n";
            msg = msg + "Last edited:\n";
            msg = msg
                    + CompSettings.getDefaultDateFormat().format(
                            currentNode.getDate()) + "\n\n";
            msg = msg + "File:\n";
            msg = msg + currentNode.getProjectFile() + "\n\n";
            msg = msg + "Description:\n";
            msg = msg + currentNode.getDescription();

            StdMessages.info(msg, "Project Information");
        }
    };

    /**
     * Singleton instance.
     */
    private static final ProjectNodePopup INSTANCE = new ProjectNodePopup();

    /**
     * Currently selected node.
     */
    private ProjectTreeNode currentNode = null;

    /**
     * Not to be invoked.
     */
    private ProjectNodePopup() {
        super();
        add(save);
        addSeparator();
        add(edit);
        add(delete);
        addSeparator();
        add(info);
    }

    private ProjectDialog getProjectDialog() {
        return ProjectDialog.getInstance();
    }

    /**
     * Gets the singleton instance of this popup menu.
     * 
     * @return initialized shared instance
     */
    public static ProjectNodePopup getInstance() {
        return INSTANCE;
    }

    /**
     * Sets the project node that should be referenced by actions invoked from
     * this component. Should be set by the project tree.
     * 
     * @param currentNode
     *            current project tree node
     */
    public void setCurrentNode(ProjectTreeNode currentNode) {
        boolean lastState = currentNode.isLastState();
        save.setEnabled(!lastState);
        edit.setEnabled(!lastState);

        this.currentNode = currentNode;
    }
} //  @jve:decl-index=0:visual-constraint="71,93"