Bug 25729 Java editor opening up build.xml
Using Java editor to open .xml usually works. But when opening Ant build file (build.xml), it gives the NullPointerException and the IDE no longer works. !ENTRY org.eclipse.ui 4 4 Nov 05, 2002 09:28:39.131 !MESSAGE Unhandled exception caught in event loop. !ENTRY org.eclipse.ui 4 0 Nov 05, 2002 09:28:39.131 !MESSAGE java.lang.NullPointerException !STACK 0 java.lang.NullPointerException at org.eclipse.ui.internal.WorkbenchWindow$12.shellActivated(WorkbenchWindow. java:1454) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:157) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:77) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:825) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:850) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:830) at org.eclipse.swt.widgets.Decorations.WM_ACTIVATE (Decorations.java:1246) at org.eclipse.swt.widgets.Shell.WM_ACTIVATE(Shell.java:1139) at org.eclipse.swt.widgets.Control.windowProc(Control.java:2689) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1218) at org.eclipse.swt.widgets.Display.windowProc(Display.java:2172) at org.eclipse.swt.internal.win32.OS.DestroyWindow(Native Method) at org.eclipse.swt.widgets.Control.destroyWidget(Control.java:497) at org.eclipse.swt.widgets.Widget.dispose(Widget.java:358) at org.eclipse.swt.widgets.Shell.dispose(Shell.java:470) at org.eclipse.jface.window.Window.close(Window.java:223) at org.eclipse.jface.dialogs.Dialog.close(Dialog.java:676) at org.eclipse.jface.dialogs.MessageDialog.buttonPressed(MessageDialog.java:1 41) at org.eclipse.jface.dialogs.Dialog$1.widgetSelected(Dialog.java:397) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:87) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:77) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:825) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1692) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1410) at org.eclipse.jface.window.Window.runEventLoop(Window.java:561) at org.eclipse.jface.window.Window.open(Window.java:541) at org.eclipse.jface.dialogs.MessageDialog.openQuestion(MessageDialog.java:31 8) at org.eclipse.ui.internal.Workbench$1.handleException(Workbench.java:222) at org.eclipse.core.internal.runtime.InternalPlatform.handleException(Interna lPlatform.java:439) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.ja va:841) at org.eclipse.core.runtime.Platform.run(Platform.java:413) at org.eclipse.ui.internal.Workbench.busyClose(Workbench.java:208) at org.eclipse.ui.internal.Workbench.access$5(Workbench.java:206) at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:363) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:65) at org.eclipse.ui.internal.Workbench.close(Workbench.java:361) at org.eclipse.ui.internal.Workbench.close(Workbench.java:353) at org.eclipse.ui.internal.Workbench.close(Workbench.java:347) at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:355 ) at org.eclipse.ui.internal.WorkbenchWindow.access$3(WorkbenchWindow.java:348) at org.eclipse.ui.internal.WorkbenchWindow$2.run(WorkbenchWindow.java:404) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:65) at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:402) at org.eclipse.jface.window.Window.handleShellCloseEvent (Window.java:482) at org.eclipse.jface.window.Window$2.shellClosed(Window.java:433) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:152) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:77) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:825) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:850) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:834) at org.eclipse.swt.widgets.Decorations.WM_CLOSE(Decorations.java:1258) at org.eclipse.swt.widgets.Shell.WM_CLOSE(Shell.java:1148) at org.eclipse.swt.widgets.Control.windowProc(Control.java:2692) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1218) at org.eclipse.swt.widgets.Display.windowProc(Display.java:2172) at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method) at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java:1281) at org.eclipse.swt.widgets.Scrollable.callWindowProc(Scrollable.java:73) at org.eclipse.swt.widgets.Shell.callWindowProc(Shell.java:392) at org.eclipse.swt.widgets.Control.windowProc(Control.java:2766) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1218) at org.eclipse.swt.widgets.Display.windowProc(Display.java:2172) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1286) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1408) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1419) at org.eclipse.ui.internal.Workbench.run(Workbench.java:1402) at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.j ava:831) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:462) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorIm pl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.basicRun(Main.java:247) at org.eclipse.core.launcher.Main.run(Main.java:703) at org.eclipse.core.launcher.Main.main(Main.java:539)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
if (range != null) {
						offset= range.getOffset();
						length= range.getLength();
					}
				} else if (reference instanceof IImportDeclaration) {
					String name= ((IImportDeclaration) reference).getElementName();
					if (name != null && name.length() > 0) {
						String content= reference.getSource();
						offset= range.getOffset() + content.indexOf(name);
						length= name.length();
					}
				} else if (reference instanceof IPackageDeclaration) {
					String name= ((IPackageDeclaration) reference).getElementName();
					if (name != null && name.length() > 0) {
						String content= reference.getSource();
						offset= range.getOffset() + content.indexOf(name);
						length= name.length();
					}
				}
				
				if (offset > -1 && length > 0) {
					sourceViewer.revealRange(offset, length);
					sourceViewer.setSelectedRange(offset, length);
				}
				
			} catch (JavaModelException x) {
			} catch (IllegalArgumentException x) {
			} finally {
				if (textWidget != null)
					textWidget.setRedraw(true);