@Override public void run() { ISourceViewer sourceViewer = getSourceViewer(); if (sourceViewer == null) { fTextOperationAction.run(); return; } if (sourceViewer instanceof ITextViewerExtension4) { ITextViewerExtension4 extension4 = (ITextViewerExtension4) sourceViewer; if (extension4.moveFocusToWidgetToken()) return; } if (sourceViewer instanceof ITextViewerExtension2) { // does a text hover exist? ITextHover textHover = ((ITextViewerExtension2) sourceViewer).getCurrentTextHover(); if (textHover != null && makeTextHoverFocusable(sourceViewer, textHover)) return; } if (sourceViewer instanceof ISourceViewerExtension3) { // does an annotation hover exist? IAnnotationHover annotationHover = ((ISourceViewerExtension3) sourceViewer).getCurrentAnnotationHover(); if (annotationHover != null && makeAnnotationHoverFocusable(sourceViewer, annotationHover)) return; } // otherwise, just display the tooltip // fTextOperationAction.run(); }