Bug 114390 [Markers] Show In menu item enabled for categories
20051025 The Show In menu item is enabled for categories. Not only is it meaningless it generates the following exception: !ENTRY org.eclipse.ui 4 0 2005-10-31 13:41:50.296 !MESSAGE java.lang.ClassCastException !STACK 0 java.lang.ClassCastException at org.eclipse.ui.views.markers.internal.MarkerView$4.getShowInContext(MarkerView.java:572) at org.eclipse.ui.internal.ShowInMenu.getContext(ShowInMenu.java:252) at org.eclipse.ui.internal.ShowInMenu.fillMenu(ShowInMenu.java:120) at org.eclipse.ui.internal.ShowInMenu.fill(ShowInMenu.java:95) at org.eclipse.jface.action.MenuManager.update(MenuManager.java:627) at org.eclipse.jface.action.MenuManager.update(MenuManager.java:549) at org.eclipse.jface.action.MenuManager.fill(MenuManager.java:232) at org.eclipse.jface.action.MenuManager.update(MenuManager.java:627) at org.eclipse.jface.action.MenuManager.handleAboutToShow(MenuManager.java:373) at org.eclipse.jface.action.MenuManager.access$0(MenuManager.java:369) at org.eclipse.jface.action.MenuManager$2.menuShown(MenuManager.java:386) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:117) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:893) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:917) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:898) at org.eclipse.swt.widgets.Control.WM_INITMENUPOPUP(Control.java:3363) at org.eclipse.swt.widgets.Control.windowProc(Control.java:3082) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1538) at org.eclipse.swt.widgets.Display.windowProc(Display.java:3910) at org.eclipse.swt.internal.win32.OS.TrackPopupMenu(Native Method) at org.eclipse.swt.widgets.Menu._setVisible(Menu.java:225) at org.eclipse.swt.widgets.Display.runPopups(Display.java:3264) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2852) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1774) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1738) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:376) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:106) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:375) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:164) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.invokeFramework(Main.java:338) at org.eclipse.core.launcher.Main.basicRun(Main.java:282) at org.eclipse.core.launcher.Main.run(Main.java:977) at org.eclipse.core.launcher.Main.main(Main.java:952)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerView.java
MarkerFilter[] filters = getEnabledFilters();
		boolean updateNeeded = false;
		for (int i = 0; i < filters.length; i++) {
			MarkerFilter filter = filters[i];
			if (!filter.isEnabled())
				continue;
			int onResource = filter.getOnResource();
			if (onResource == MarkerFilter.ON_ANY
					|| onResource == MarkerFilter.ON_WORKING_SET) {
				continue;
			}
			if (newElements == null || newElements.length < 1) {
				continue;
			}
			if (oldElements == null || oldElements.length < 1) {
				return true;
			}
			if (Arrays.equals(oldElements, newElements)) {
				continue;
			}
			if (onResource == MarkerFilter.ON_ANY_IN_SAME_CONTAINER) {
				Collection oldProjects = MarkerFilter
						.getProjectsAsCollection(oldElements);
				Collection newProjects = MarkerFilter
						.getProjectsAsCollection(newElements);
				if (oldProjects.size() == newProjects.size()) {
					if (newProjects.containsAll(oldProjects))
						continue;
				}