Thank you for your answer! therefore, the only means of stopping a render, it's to put FOP in Thread (and to stop the Thread)
But, how did you make to redirect the logger towards a dialog box? Philippe. -----Message d'origine----- De : Patrick Dean Rusk [mailto:[EMAIL PROTECTED] Envoyé : vendredi 7 février 2003 18:00 À : [EMAIL PROTECTED] Objet : RE: How to stop a render FOP ? > How to stop a render FOP ? Philippe, I'm going to assume that you want a human or a program to stop a FOP run that is embedded in a program that should otherwise remain running. If you mean the command line, you can, of course, use ^C or whatever interrupt command is appropriate to your shell. It would be preferable to be able to run FOP in a separate thread, and then set some flag from the main thread that FOP would notice and abort on. If such a simple, programmatic mechanism for doing this exists, I don't know of it. I have been able to implement the following though.... I wanted to put up a modal progress dialog that would indicate how many pages have been rendered thus far. I did this by creating ProgressDialogLogger, an implementation of the org.apache.avalon.framework.logger.Logger interface, and set it as the logger for the rendering run. Then, from the main thread I put up the modal progress dialog with an initial message of "Initializing...". Then I launch FOP in a separate thread. Every time FOP logs a message, particularly the INFO messages counting off the rendered pages, I update the message in the progress dialog. When FOP finishes, the dialog is disposed of. That all worked fine. Then I wanted to put a "Cancel" button on the dialog. The Cancel button sets a flag on the ProgressDialogLogger. The next time that FOP attempts to log a message, the ProgressDialogLogger notices this flag and throws a "CancelError", a subclass of Error. I chose an Error subclass on the assumption that FOP would not have any "catch (Error error)" blocks, which appears correct. Then, my background thread running FOP catches the CancelError, closes the streams it opened for FOP, disposes of the progress dialog, and exits. Hope this helps. Patrick Rusk --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
