Bug 219483 [Markers] MarkerField needs to support font and colours
Some users want to be able to set the font and colour of an entry in the markers view. We should pass in a ViewerCell for this.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerPriorityField.java
private ComboBoxCellEditor editor;
		/**
		 * Create a new instance of the receiver.
		 * 
		 * @param viewer
		 */
		public PriorityEditingSupport(ColumnViewer viewer) {
			super(viewer);
			this.editor = new ComboBoxCellEditor((Composite) viewer
					.getControl(), priorities, SWT.READ_ONLY);
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.jface.viewers.EditingSupport#canEdit(java.lang.Object)
		 */
		protected boolean canEdit(Object element) {
			if (element instanceof MarkerEntry)
				return ((MarkerEntry) element).getAttributeValue(
						IMarker.USER_EDITABLE, false);
			return false;
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.jface.viewers.EditingSupport#getCellEditor(java.lang.Object)