Bug 250604 [FieldAssist] API - ContentProposalAdapter needs isShowing() method
Please implement a method ContentProposalAdapter.isShwoing(). The method should return a boolean whether the content assistant proposal popup is open or not.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
}
			}
		}
		/*
		 * The listener we will install on the target control.
		 */
		private final class TargetControlListener implements Listener {
			
			public void handleEvent(Event e) {
				if (!isValid()) {
					return;
				}
				char key = e.character;
				
				
				if (e.type == SWT.Traverse) {
					
					
					
					
					
					if (key != 0) {
						e.doit = false;
						return;
					}
					
					
					
					
					e.detail = SWT.TRAVERSE_NONE;