Bug 256844 [CSS] TK-UI CSS engine for Nebula widget
examples/org.eclipse.e4.ui.examples.css/src/org/eclipse/e4/ui/examples/css/editor/AbstractCSSSWTEditor.java
protected static final String[] CSS_FILE_EXTENSION = { "*.css" };
	private Display display;
	/**
	 * Textarea which contains content of CSS style sheet.
	 */
	private StyledText textArea;
	private Button cacheResourcesCheckbox;
	/**
	 * HTML checkbox to set if CSS must be typed with HTML syntaxe or SWT
	 * syntax.
	 */
	private Button htmlCheckbox;
	/**
	 * Label wich display time elapsed when CSS Engine apply styles.