Tuesday May 13, 2008
Tuesday May 13, 2008
Identifying the PNG Files in the JDK
Let's identify all the PNG files in the JDK's Boot ClassPath. Create a new NetBeans module with an action that has a performAction defined as folows:
OutputWriter writer;
@Override
public void performAction() {
InputOutput io = IOProvider.getDefault().getIO("PNG Images", false);
try {
writer = io.getOut();
io.select();
io.getOut().reset();
Set cps = GlobalPathRegistry.getDefault().getPaths(ClassPath.BOOT);
for (ClassPath cp : cps) {
List entries = cp.entries();
for (ClassPath.Entry entry : entries) {
ClassPath entryCp = entry.getDefiningClassPath();
FileObject[] fos = entryCp.getRoots();
for (FileObject fo : fos) {
cycleThroughKids(fo);
}
}
}
} catch (IOException ex) {
Exceptions.printStackTrace(ex);
}
}
private void cycleThroughKids(final FileObject fo) {
final Thread thread = new Thread() {
@Override
public void run() {
if (fo.getChildren().length > 0) {
for (FileObject oneKid : fo.getChildren()) {
if (oneKid.getMIMEType().equals("image/png")) { {
try {
writer.println(oneKid.getPath(), new PngOutPutListener(oneKid));
} catch (IOException ex) {
Exceptions.printStackTrace(ex);
}
}
cycleThroughKids(oneKid);
}
}
}
};
thread.start();
}
The line in bold above has as its final argument the creation of a NetBeans API OutputListener class, which magically returns a hyperlink for each line added to the Output window, as defined below:
class PngOutPutListener implements OutputListener {
FileObject oneKid;
PngOutPutListener(FileObject oneKid) {
this.oneKid = oneKid;
}
@Override
public void outputLineAction(OutputEvent arg0) {
try {
DataObject dObj = DataObject.find(oneKid);
OpenCookie open = (OpenCookie) dObj.getCookie(OpenCookie.class);
if (open != null) {
open.open();
}
} catch (DataObjectNotFoundException ex) {
Exceptions.printStackTrace(ex);
}
}
@Override
public void outputLineSelected(OutputEvent arg0) {}
@Override
public void outputLineCleared(OutputEvent arg0) {}
}
When a link is clicked, which is an event that a hyperlink implies should be performed, the file is opened in the editor. This is how the hyperlinks look in the Output window:
Upon being clicked, the related PNG file opens in the editor. Not useful in any way, though.
May 13 2008, 10:50:53 AM PDT Permalink
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