Bug 339702 SWTException thrown after clicking a dropdown toolbar twice and then something else
I20110310-2200 1. Click the dropdown for the 'Run' tool item once. 2. Click it again while the menu is still up (or just double-click that's fine too). 3. Now click somewhere else so that the menu goes away. 4. An SWTException is thrown. org.eclipse.swt.SWTException: Widget is disposed at org.eclipse.swt.SWT.error(SWT.java:4277) at org.eclipse.swt.SWT.error(SWT.java:4192) at org.eclipse.swt.SWT.error(SWT.java:4163) at org.eclipse.swt.widgets.Widget.error(Widget.java:468) at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:340) at org.eclipse.swt.widgets.Menu.isVisible(Menu.java:1134) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.dropdownEvent(HandledContributionItem.java:466) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleWidgetSelection(HandledContributionItem.java:425) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access$1(HandledContributionItem.java:423) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$2.handleEvent(HandledContributionItem.java:388) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4150) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3739)
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/HandledContributionItem.java
} else {
			item.setText(""); 
		}
		item.setSelection(model.isSelected());
		item.setEnabled(model.isEnabled());
	}
	private void updateToolItem() {
		ToolItem item = (ToolItem) widget;
		final String text = model.getLocalizedLabel();
		if (text != null) {
			item.setText(text);
		} else {
			item.setText(""); 
		}
		final String tooltip = getToolTipText(model);
		item.setToolTipText(tooltip);
		item.setSelection(model.isSelected());
		item.setEnabled(model.isEnabled());
	}
	private String getToolTipText(MItem item) {
		String text = item.getLocalizedTooltip();
		if (item instanceof MHandledItem) {
			MHandledItem handledItem = (MHandledItem) item;
			IEclipseContext context = getContext(item);
			EBindingService bs = (EBindingService) context
					.get(EBindingService.class.getName());
			ParameterizedCommand cmd = handledItem.getWbCommand();
			if (cmd == null) {
				cmd = generateParameterizedCommand(handledItem, context);
			}