How to wait for the event when call JSVGCanvas.loadSVGDocument?

[征宇 王]

Hi.

For avoid the Null value of UpdateManager in JSVGCanvas, I want wait for the "documentLoadingCompleted" event.My code is following:

.....

                         final Object lock = new Object(); 

              svgCanvas.addSVGDocumentLoaderListener(new
                          SVGDocumentLoaderAdapter() {
                          public void documentLoadingCompleted(
                              SVGDocumentLoaderEvent
                              e) {
                                   lock.notifyAll();
                          }
                      });

              File file = new File("filter.svg");

              svgCanvas.loadSVGDocument(file.toURL().toString());
                             

            

             lock.wait();

..............

I found the event is not fired.But If I delete the "lock.wait()", the event will be useful.Is that when "wait()" running , the thread can not receive any event?

Or could anybody tell me how to keep the UpdateManager is not null by using another method?Thx  lot.

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