Bug 42143 Dialogs for source actions do not use dialog font [dialogs]
select a cu in package explorer context menu "Source": "Override/Implement methods..." "Generate Getters and Setters..." "Generate Delegate methods..." "Add constructor from superclass..." "Generate constructor using fields..."
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/dialogs/SourceActionDialog.java
enterCombo.addSelectionListener(new SelectionAdapter(){
			public void widgetSelected(SelectionEvent e) {
				int index= enterCombo.getSelectionIndex();
								
				setInsertPosition(index);
			}
		});	
		return buttonComposite;			
	}
	private void fillWithPossibleInsertPositions(Combo combo) {
		try {
			int position= 0;
			int presetOffset= 0;
			if (fEditor != null) {
				presetOffset= ((TextSelection) fEditor.getSelectionProvider().getSelection()).getOffset();
			}
			else {
				List preselected= getInitialElementSelections();	
				int size= preselected.size();
				if ((size > 1) || (size == 0))
					presetOffset= 0;		
				else {				
					IJavaElement element= (IJavaElement) preselected.get(0);
					int type= element.getElementType();					
					if (type == IJavaElement.FIELD)
						presetOffset= ((IField)element).getSourceRange().getOffset();									
					else if (type == IJavaElement.METHOD)
						presetOffset= ((IMethod)element).getSourceRange().getOffset();	
				}
			}