Data persistence with JDeveloper extensions

Question

I have an extension which adds an extra tab at the bottom of the file next to "Source." I have added a design view which shows the GUI representation of the data. I was wondering what are some of the ways I can persist my data when the GUI or file is modified? Is there a hook to detect if the user clicked out of the "Design" tab or if the user clicked "Source tab"?
Thanks

Answer 1

DJ,
An example of using the ActiveViewListener would be something like....
Creating a new class that implements ActiveViewListener
package oracle.ide.extsamples.sampleextension;
import oracle.ide.ceditor.CodeEditor;
import oracle.ide.view.ActiveViewEvent;
import oracle.ide.view.ActiveViewListener;
public class Listeners implements ActiveViewListener {
  @Override
  public void activeViewChanged(ActiveViewEvent ev){
    if(ev.getNewView() instanceof CodeEditor){
      System.out.println("ViewID: " + ev.getNewView().getId());
      System.out.println("Filename: " + ev.getNewView().getContext().getNode().getShortLabel());     
}Then in your code you add an activeViewListener to the IDE's mainwidow
private Listeners _listener = new Listeners();
Ide.getMainWindow().addActiveViewListener(_listener);You can run your extension in debug and set a breakpoint in the Listeners class to see what type the different windows are. Right now, this code will only do the println when it's runs into a source code editor window. It does not print anything when it hits a History or Overview window.
Hope that helps.
--jb