Reactivated CustomCSSHelpHoverProvider, stylesheet class is not cached anymore

plugins/org.yakindu.sct.model.stext.ui/src/org/yakindu/sct/model/stext/ui/STextUiModule.java

@@ -7,13 +7,13 @@ import org.eclipse.xtext.ui.editor.hover.DispatchingEObjectTextHover;
 import org.eclipse.xtext.ui.editor.hover.IEObjectHover;
 import org.eclipse.xtext.ui.editor.hover.IEObjectHoverProvider;
 import org.yakindu.sct.model.stext.ui.contentassist.STextStatefulFactory;
+import org.yakindu.sct.model.stext.ui.help.CustomCSSHelpHoverProvider;
 import org.yakindu.sct.model.stext.ui.help.STextUserHelpDocumentationProvider;
 
 import com.google.inject.Binder;
 import com.google.inject.name.Names;
 
 import de.itemis.utils.jface.viewers.help.CrossRefObjectTextHover;
-import de.itemis.utils.jface.viewers.help.HelpHoverProvider;
 
 /**
  * Use this class to register components to be used within the IDE.
@@ -39,15 +39,16 @@ public class STextUiModule extends
 		return CrossRefObjectTextHover.class;
 	}
 
-	public Class<? extends IEObjectHoverProvider> bindIEObjectHoverProvider() {
-		return HelpHoverProvider.class;
-	}
-
 	@Override
 	public Class<? extends IEObjectHover> bindIEObjectHover() {
 		return CrossRefObjectTextHover.class;
 	}
 
+	public Class<? extends IEObjectHoverProvider> bindIEObjectHoverProvider() {
+		return CustomCSSHelpHoverProvider.class;
+	}
+
+
 	@Override
 	public void configure(Binder binder) {
 		super.configure(binder);

plugins/org.yakindu.sct.model.stext.ui/src/org/yakindu/sct/model/stext/ui/help/CustomCSSHelpHoverProvider.java

@@ -16,10 +16,13 @@ import java.io.InputStreamReader;
 import java.net.URL;
 
 import org.eclipse.jface.internal.text.html.BrowserInformationControl;
+import org.eclipse.jface.internal.text.html.HTMLPrinter;
+import org.eclipse.jface.resource.JFaceResources;
 import org.eclipse.jface.text.AbstractReusableInformationControlCreator;
 import org.eclipse.jface.text.DefaultInformationControl;
 import org.eclipse.jface.text.IInformationControl;
 import org.eclipse.jface.text.IInformationControlCreator;
+import org.eclipse.swt.graphics.FontData;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.ui.editors.text.EditorsUI;
 import org.yakindu.sct.model.stext.ui.internal.STextActivator;
@@ -35,18 +38,37 @@ import de.itemis.utils.jface.viewers.help.HelpHoverProvider;
  * have the status line visible. (Not possible to set the bg color of the status
  * line)
  * 
+ * 
  * @author andreas muelder - Initial contribution and API
  * 
  */
 @SuppressWarnings("restriction")
 public class CustomCSSHelpHoverProvider extends HelpHoverProvider {
 
+	private String fgStyleSheet = null;
+
+	@Inject(optional = true)
+	@Named("org.eclipse.xtext.ui.editor.hover.XtextEditorHover.font")
+	private String fontSymbolicName = "org.eclipse.jdt.ui.javadocfont"; //$NON-NLS-1$ 
+
 	@Inject
 	@Named("stylesheet")
 	private String styleSheetFileName;
 
 	private HoverControlCreator hoverControlCreator;
 
+	protected String getStyleSheet() {
+		if (fgStyleSheet == null)
+			fgStyleSheet = loadStyleSheet();
+		String css = fgStyleSheet;
+		if (css != null) {
+			FontData fontData = JFaceResources.getFontRegistry().getFontData(
+					fontSymbolicName)[0];
+			css = HTMLPrinter.convertTopLevelFont(css, fontData);
+		}
+		return css;
+	}
+
 	protected String loadStyleSheet() {
 		URL styleSheetURL = STextActivator.getInstance().getBundle()
 				.getEntry(styleSheetFileName); //$NON-NLS-1$