private Tab createRasterStyleTab(final ClientRasterLayerInfo config) { Tab tab = new Tab(MESSAGES.layerConfigurationLayerStyle()); VLayout vl = new VLayout(10); vl.setMargin(10); opacitySlider = new Slider(MESSAGES.layerConfigurationOpacity()); opacitySlider.setMinValue(0); opacitySlider.setMaxValue(100); opacitySlider.setVertical(false); try { opacitySlider.setValue(Float.parseFloat(config.getStyle()) * 100); } catch (NumberFormatException e) { opacitySlider.setValue(100); } vl.addMember(opacitySlider); tab.setPane(vl); return tab; }