/**
* Will save the currently selected image as the image of the class if OK is pressed.
*
* <p>If performed on the current world this will allow for previewing of the currently selected
* image, but revert to the original background image of cancelled.
*
* @param e ignored
*/
public void actionPerformed(ActionEvent e) {
final World currentWorld = WorldHandler.getInstance().getWorld();
// save the original background if possible
final GreenfootImage originalBackground =
((currentWorld == null) ? null : WorldVisitor.getBackgroundImage(currentWorld));
// allow the previewing if we are setting the image of the current world.
ImageSelectionWatcher watcher = null;
if (currentWorld != null
&& currentWorld.getClass().getName().equals(classView.getGClass().getQualifiedName())) {
watcher =
new ImageSelectionWatcher() {
@Override
public void imageSelected(final File imageFile) {
if (imageFile != null) {
Simulation.getInstance()
.runLater(
new Runnable() {
@Override
public void run() {
if (WorldHandler.getInstance().getWorld() == currentWorld) {
currentWorld.setBackground(imageFile.getAbsolutePath());
}
}
});
}
}
};
}
// initialise our image library frame
JFrame gfFrame = GreenfootMain.getInstance().getFrame();
ImageLibFrame imageLibFrame = new ImageLibFrame(gfFrame, classView, watcher);
DialogManager.centreDialog(imageLibFrame);
imageLibFrame.setVisible(true);
// set the image of the class to the selected file
if (imageLibFrame.getResult() == ImageLibFrame.OK) {
File currentImageFile = imageLibFrame.getSelectedImageFile();
setClassImage(classView, gclassRole, currentImageFile);
gfFrame.repaint();
}
// or if cancelled reset the world background to the original format
// to avoid white screens or preview images being left there.
else if (currentWorld != null && imageLibFrame.getResult() == ImageLibFrame.CANCEL) {
Simulation.getInstance()
.runLater(
new Runnable() {
@Override
public void run() {
currentWorld.setBackground(originalBackground);
}
});
}
}
public static void setClassImage(ClassView classView, ImageClassRole gclassRole, File imageFile) {
GClass gclass = classView.getGClass();
File projImagesDir = gclass.getPackage().getProject().getImageDir();
if (imageFile != null) {
if (!imageFile.getParentFile().getAbsoluteFile().equals(projImagesDir)) {
// An image was selected from an external dir. We need
// to copy it into the project images directory first.
File destFile = new File(projImagesDir, imageFile.getName());
try {
FileUtility.copyFile(imageFile, destFile);
imageFile = destFile;
} catch (IOException e) {
Debug.reportError("Error when copying file: " + imageFile + " to: " + destFile, e);
}
}
gclass.setClassProperty("image", imageFile.getName());
} else {
imageFile = null;
gclass.setClassProperty("image", null);
}
gclassRole.changeImage();
gclass.getPackage().getProject().getProjectProperties().save();
}