gridLayout.marginTop = 0;
gridLayout.marginWidth = 0;
parent.setLayout(gridLayout);
if (editorSupported) {
colorRulesEditor = new CoverageColorEditor(parent, SWT.NONE);
StyleBlackboard styleBlackboard = layer.getStyleBlackboard();
Style style = (Style) styleBlackboard.get(SLDContent.ID);
if (style == null) {