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Always thrown when I start to debug on iPad java.lang.NullPointerException at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.performHoverRelatedStyleSheetUpdate(WebKitPageModel.java:967) at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.updateSelectionMode(WebKitPageModel.java:955) at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.access$1800(WebKitPageModel.java:829) at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer$1.run(WebKitPageModel.java:855) Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to at org.openide.util.RequestProcessor.post(RequestProcessor.java:424) at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.propertyChange(WebKitPageModel.java:835) at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263) at org.netbeans.modules.web.inspect.PageModel.firePropertyChange(PageModel.java:198) at org.netbeans.modules.web.inspect.webkit.WebKitPageModel.setSynchronizeSelection(WebKitPageModel.java:679) at org.netbeans.modules.web.inspect.PageInspectorImpl.inspectPage(PageInspectorImpl.java:162) at org.netbeans.modules.cordova.CordovaPerformer.startDebugging(CordovaPerformer.java:348) at org.netbeans.modules.cordova.CordovaPerformer$1.run(CordovaPerformer.java:159) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432) [catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)
The corresponding lines are 966: StyleSheetBody body = css.getStyleSheet(styleSheetId); 967: String styleSheetText = body.getText(); Hence, the exception shows that 'body' is null. Could you, please, scan the WebKit log and check whether you find a root of this problem? It seems that we failed to receive a response for "CSS.getStyleSheet". Is this the case? Maybe the browser used by PhoneGap (Safari?) uses a different version of the protocol than we support for Chrome currently.
Yes. That's it: 16:35:31:670 blocking send {"id":39,"method":"CSS.getAllStyleSheets"} . . . 16:35:31:738 response {"id":39,"result":{"headers":[{"title":"","sourceURL":"file:\/\/\/var\/mobile\/Applications\/FEDFF2CD-0FD0-4694-B3EB-036DE7F5F0B1\/BackboneJQueryMobile4.app\/www\/css\/jquery.mobile-1.0.1.min.css","styleSheetId":"1","disabled":false}]}} 16:35:31:741 blocking send {"id":40,"method":"CSS.getStyleSheet","params":{"styleSheetId":"1"}} 16:35:41:742 no response for {"id":40,"method":"CSS.getStyleSheet","params":{"styleSheetId":"1"}} Can you workaround it? It looks like stylesheet with id "1" is already loaded.
I have no idea why CSS.getStyleSheet fails on iPad. This method seems to be in WebKit Remote Debugging API since introduction of CSS domain. Anyway, the code that results in the attached exception is not crucial for page inspection. It is simple to skip it when CSS.getStyleSheet fails. Modified file: http://hg.netbeans.org/web-main/rev/e61c0d1372d4