abstracteditcvdialog.java

编辑视频文件

/*
 * File:     AbstractEditCVDialog.java
 * Project:  MPI Linguistic Application
 * Date:     02 May 2007
 *
 * Copyright (C) 2001-2007  Max Planck Institute for Psycholinguistics
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package mpi.util.gui;

import mpi.util.ControlledVocabulary;

import java.awt.Component;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import java.util.List;

import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.WindowConstants;


/**
 * DOCUMENT ME!
 * $Id: jalopy_gnu_src_dist.xml,v 1.3 2007/02/06 13:30:33 hasloe Exp $
 * @author $Author: hasloe $
 * @version $Revision: 1.3 $
 */
public abstract class AbstractEditCVDialog extends JDialog
    implements ActionListener, ItemListener {
    /** Holds value of property DOCUMENT ME! */
    private static final int DEFAULT_MINIMUM_HEIGHT = 500;

    /** Holds value of property DOCUMENT ME! */
    private static final int DEFAULT_MINIMUM_WIDTH = 550;

    /** Holds value of property DOCUMENT ME! */
    protected EditCVPanel cvEditorPanel;

    /** Holds value of property DOCUMENT ME! */
    protected JButton addCVButton;

    /** Holds value of property DOCUMENT ME! */
    protected JButton changeCVButton;

    /** Holds value of property DOCUMENT ME! */
    protected JButton closeDialogButton;

    /** Holds value of property DOCUMENT ME! */
    protected JButton deleteCVButton;

    /** Holds value of property DOCUMENT ME! */
    protected JComboBox cvComboBox;

    /** Holds value of property DOCUMENT ME! */
    protected JLabel currentCVLabel;

    /** Holds value of property DOCUMENT ME! */
    protected JLabel cvDescLabel;

    /** Holds value of property DOCUMENT ME! */
    protected JLabel cvNameLabel;

    /** Holds value of property DOCUMENT ME! */
    protected JLabel titleLabel;

    /** Holds value of property DOCUMENT ME! */
    protected JPanel cvButtonPanel;

    /** Holds value of property DOCUMENT ME! */
    protected JPanel cvPanel;

    /** Holds value of property DOCUMENT ME! */
    protected JTextArea cvDescArea;

    /** Holds value of property DOCUMENT ME! */
    protected JTextField cvNameTextField;

    /** Holds value of property DOCUMENT ME! */
    protected String cvContainsEntriesMessage = "contains entries.";

    /** Holds value of property DOCUMENT ME! */
    protected String cvInvalidNameMessage = "Invalid name.";

    /** Holds value of property DOCUMENT ME! */
    protected String cvNameExistsMessage = "Name exists already.";

    /** Holds value of property DOCUMENT ME! */
    protected String deleteQuestion = "delete anyway?";

    /** Holds value of property DOCUMENT ME! */
    protected String oldCVDesc;

    // internal caching fields

    /** Holds value of property DOCUMENT ME! */
    protected String oldCVName;

    /** Holds value of property DOCUMENT ME! */
    protected int minimumHeight;

    /** Holds value of property DOCUMENT ME! */
    protected int minimumWidth;

    /** Holds value of property DOCUMENT ME! */
    private final boolean multipleCVs;

    /**
     * Constructor with standard EditCVPanel
     * @param parent parent window
     * @param modal modality
     * @param multipleCVs if true, user can edit more than one CV
     */
    public AbstractEditCVDialog(Frame parent, boolean modal, boolean multipleCVs) {
        this(parent, modal, multipleCVs, new EditCVPanel());
    }

    /**
     *
     * @param parent parent window
     * @param modal modality
     * @param multipleCVs if true, user can edit more than one CV
     * @param cvEditorPanel panel which might have already controlled vocabulary
     */
    public AbstractEditCVDialog(Frame parent, boolean modal,
        boolean multipleCVs, EditCVPanel cvEditorPanel) {
        super(parent, modal);
        this.cvEditorPanel = cvEditorPanel;
        this.multipleCVs = multipleCVs;
        minimumHeight = DEFAULT_MINIMUM_HEIGHT;
        minimumWidth = DEFAULT_MINIMUM_WIDTH;
        makeLayout();
    }

    /**
     * The button actions.
     *
     * @param actionEvent the actionEvent
     */
    public void actionPerformed(ActionEvent actionEvent) {
        Object source = actionEvent.getSource();

        // check source equality
        if (source == closeDialogButton) {
            closeDialog();
        } else if (source == addCVButton) {
            addCV();
        } else if (source == changeCVButton) {
            changeCV();
        } else if (source == deleteCVButton) {
            deleteCV();
        }
    }

    /**
     * Handles a change in the cv selection.
     *
     * @param ie the item event
     */
    public void itemStateChanged(ItemEvent ie) {
        if (ie.getSource() == cvComboBox) {
            if (ie.getStateChange() == ItemEvent.SELECTED) {
                cvEditorPanel.setControlledVocabulary((ControlledVocabulary) cvComboBox.getSelectedItem());
            }

            updateCVButtons();
        }
    }

    /**
     * test method with an cv list of size 0
     * @param args no arguments needed
     */
    public static void main(String[] args) {
        javax.swing.JFrame frame = new javax.swing.JFrame();
        AbstractEditCVDialog dialog = new AbstractEditCVDialog(frame, false,
                false) {
                protected List getCVList() {
                    return new java.util.ArrayList();
                }
            };

        dialog.updateComboBox();
        dialog.pack();
        dialog.setVisible(true);
    }

    /**
     * DOCUMENT ME!
     *
     * @return DOCUMENT ME!
     */
    protected abstract List getCVList();

    /**
     * Pack, size and set location.
     */
    protected void setPosition() {
        pack();
        setSize(Math.max(getSize().width, DEFAULT_MINIMUM_WIDTH),
            Math.max(getSize().height, DEFAULT_MINIMUM_HEIGHT));
        setLocationRelativeTo(getParent());
    }

    /**
     * check if name is valid
     *
     */
    protected void addCV() {
        String name = cvNameTextField.getText();

        name = name.trim();

        if (name.length() == 0) {
            showWarningDialog(cvInvalidNameMessage);

            return;
        }

        if (cvExists(name)) {
            // cv with that name already exists, warn
            showWarningDialog(cvNameExistsMessage);

            return;
        }

        addCV(name);
    }

    /**
     * Creates a new ControlledVocabulary when there isn't already one with the
     * same name and adds it to the List.
     *
     * @param name name of new CV
     */
    protected void addCV(String name) {
        ControlledVocabulary cv = new ControlledVocabulary(name, "");
        cvComboBox.addItem(cv);
        cvEditorPanel.setControlledVocabulary(cv);
    }

    /**
     * Checks whether name is valid and unique.
     */
    protected void changeCV() {
        ControlledVocabulary cv = (ControlledVocabulary) cvComboBox.getSelectedItem();

        if (cv == null) {
            return;
        }

        String name = cvNameTextField.getText();
        String desc = cvDescArea.getText();

        if (name != null) {
            name = name.trim();

            if (name.length() < 1) {
                showWarningDialog(cvInvalidNameMessage);
                cvNameTextField.setText(oldCVName);

                return;
            }
        }

        if ((oldCVName != null) && !oldCVName.equals(name)) {
            // check if there is already a cv with the new name
            if (cvExists(name)) {
                // cv with that name already exists, warn
                showWarningDialog(cvNameExistsMessage);

                return;
            }

            changeCV(cv, name, desc);
        } else if (((oldCVDesc == null) && (desc != null) &&
                (desc.length() > 0)) ||
                ((oldCVDesc != null) &&
                ((desc == null) || (desc.length() == 0))) ||
                (!oldCVDesc.equals(desc))) {
            changeCV(cv, null, desc);
        }
    }

    /**
     * changes name and description in specified ControlledVocabulary
     * @param cv ControlledVocabulary to be changed
     * @param name new name (may be null -> no change of name!)
     * @param description new description
     */
    protected void changeCV(ControlledVocabulary cv, String name,
        String description) {
        cv.setDescription(description);

        if (name != null) {
            cv.setName(name);
            cvEditorPanel.setControlledVocabulary(cv);
        }
    }

    /**
    * Closes the dialog
    */
    protected void closeDialog() {