MouseChangedComponentEditor.java :  » Testing » jacareto » jacareto » editor » Java Open Source

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jacareto » jacareto » editor » MouseChangedComponentEditor.java
/*
 * Jacareto Copyright (c) 2002-2005
 * Applied Computer Science Research Group, Darmstadt University of
 * Technology, Institute of Mathematics & Computer Science,
 * Ludwigsburg University of Education, and Computer Based
 * Learning Research Group, Aachen University. All rights reserved.
 *
 * Jacareto 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.
 *
 * Jacareto 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 Jacareto; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

package jacareto.editor;


import jacareto.struct.MouseChangedComponent;
import jacareto.struct.StructureElement;
import jacareto.system.Environment;
import jacareto.system.Language;

import java.awt.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;

/**
 * An editor for "mouse changed component" elements.
 *
 * @author <a href="mailto:cspannagel@web.de">Christian Spannagel</a>
 * @version 1.01
 */
public class MouseChangedComponentEditor extends Editor {
    /** The element to edit. */
    private StructureElement element;

    /** The panel. */
    private JPanel editorPanel;

    /** The grid bag constraints. */
    private GridBagConstraints c;

    /** The text field for the old component name. */
    private JTextField oldComponentField;

    /** The text field for the new component name. */
    private JTextField newComponentField;

    /**
     * Create a new "mouse exited" recordable editor.
     *
     * @param env the environment
     */
    public MouseChangedComponentEditor (Environment env) {
        super(env);

        Language language = getLanguage ();

        // The panel with the text fields
        editorPanel = new JPanel();
        editorPanel.setBorder (new EmptyBorder(10, 10, 10, 10));
        editorPanel.setLayout (new GridBagLayout());

        // The old component field label
        c = new GridBagConstraints();
        c.gridx = 0;
        c.gridy = 0;
        c.weightx = 40;
        c.ipadx = 5;
        c.ipady = 5;
        c.anchor = GridBagConstraints.WEST;

        JLabel oldComponentFieldLabel = new JLabel(language.getString (
                    "Structures.MouseChangedComponent.OldComponent") + ":");
        editorPanel.add (oldComponentFieldLabel, c);

        // The old component field
        c.gridx = 1;
        c.weightx = 60;
        oldComponentField = new JTextField("", 20);
        oldComponentField.setEditable (false);
        editorPanel.add (oldComponentField, c);
        oldComponentFieldLabel.setLabelFor (oldComponentField);

        // The new component field label
        c.gridx = 0;
        c.gridy = 1;

        JLabel newComponentFieldLabel = new JLabel(language.getString (
                    "Structures.MouseChangedComponent.NewComponent") + ":");
        editorPanel.add (newComponentFieldLabel, c);

        // The old component field
        c.gridx = 1;
        newComponentField = new JTextField("", 20);
        newComponentField.setEditable (false);
        editorPanel.add (newComponentField, c);
        newComponentFieldLabel.setLabelFor (newComponentField);
    }

    /**
     * Returns whether this editor is responsible for a given structure element. This editor is
     * responsible for all "mouse exited" elements.
     *
     * @param element the structure element
     *
     * @return <code>true</code> if <i>element</i> is a mouse event recordable and not
     *         <code>null</code>, otherwise <code>false</code>
     */
    public boolean handlesElement (StructureElement element) {
        return (element != null) && (element instanceof MouseChangedComponent);
    }

    /**
     * Returns the actual structure element to be edited.
     *
     * @return DOCUMENT ME!
     */
    public StructureElement getElement () {
        return element;
    }

    /**
     * Sets the element to edit.
     *
     * @param element DOCUMENT ME!
     */
    public void setElement (StructureElement element) {
        this.element = element;

        MouseChangedComponent changed = (MouseChangedComponent) element;
        oldComponentField.setText (changed.getOldComponent ());
        oldComponentField.setCaretPosition (0);
        newComponentField.setText (changed.getNewComponent ());
        newComponentField.setCaretPosition (0);
    }

    /**
     * Returns the component of the editor.
     *
     * @return the editor component
     */
    public Component getComponent () {
        return editorPanel;
    }
}
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