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/* DefaultWindowWrapper.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 Universiteit Gent
*
* 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.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.grinvin.workspace;
import java.awt.Rectangle;
import java.awt.Window;
import java.io.IOException;
import org.grinvin.io.IOFormatException;
import org.grinvin.io.SectionLoader;
import org.grinvin.io.SectionSaver;
import org.jdom.DataConversionException;
import org.jdom.Element;
/**
* Common super class of all wrappers that manage a single window of
* type <tt>W</tt>.
*/
public abstract class DefaultWindowWrapper<W extends Window> implements Wrapper<W> {
/**
* {@inheritDoc}<p>
* This implementation disposes of the associated window.
*/
public void dispose(W window) {
window.dispose();
}
//
public abstract W create();
/**
* General purpose routine which can be used to set bounds
* and visbility of any window.
*/
protected static void loadWindowProperties(Element element, Window window) throws IOFormatException {
window.setBounds(elementToBounds(element));
try {
window.setVisible(
element.getAttribute("isvisible").getBooleanValue() );
} catch (DataConversionException ex) {
throw new IOFormatException("Incorrect boolean attribute value", ex);
}
}
/**
* General purpose routine which can be used to save the
* bounds and visibility of any window.
*/
protected static void saveWindowProperties(Element element, Window window) {
Rectangle bounds = window.getBounds();
element.addContent(boundsToElement(bounds));
element.setAttribute("isvisible", Boolean.toString(window.isVisible()));
}
private static Element boundsToElement(Rectangle bounds) {
Element element = new Element("bounds");
element.setAttribute("x", Integer.toString(bounds.x));
element.setAttribute("y", Integer.toString(bounds.y));
element.setAttribute("height", Integer.toString(bounds.height));
element.setAttribute("width", Integer.toString(bounds.width));
return element;
}
private static Rectangle elementToBounds(Element element) throws IOFormatException {
Element child = element.getChild("bounds");
if (child == null)
throw new IOFormatException("expected <bounds> element");
int x = Integer.parseInt(child.getAttributeValue("x"));
int y = Integer.parseInt(child.getAttributeValue("y"));
int height = Integer.parseInt(child.getAttributeValue("height"));
int width = Integer.parseInt(child.getAttributeValue("width"));
return new Rectangle(x, y, width, height);
}
/**
* {@inheritDoc}<p>This implementation creates the window using
* {@link #create} and sets window bounds and visibility
* from the information in the workspace XML-file.
*/
public W load(Element element, SectionLoader sloader) throws IOException {
W window = create();
loadWindowProperties(element, window);
return window;
}
/**
* Create a JDOM-element that contains the version information.
* Further attributes and contents should be added later.
*/
protected final Element baseElement() {
return new Element(getElementName());
}
/**
* {@inheritDoc}<p>This implementation saves the information obtained
* from the method {@link #baseElement} and {@link #saveWindowProperties} into <tt>parent</tt> and leaves
* the directory alone.
*/
public void save(W window, Element parent, SectionSaver ssaver) throws IOException {
Element result = baseElement();
saveWindowProperties(result, window);
parent.addContent(result);
}
}
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