@Override public void createPartControl(@Nullable Composite parent) { super.createPartControl(parent); final SashForm sashForm = new SashForm(parent, SWT.NONE); fTableViewer = createSegmentStoreTableViewer(sashForm); fDensityViewer = createSegmentStoreDensityViewer(sashForm); fDensityViewer.addDataListener(new DataChangedListener()); sashForm.setWeights(DEFAULT_WEIGHTS); Action zoomOut = new ZoomOutAction(this); IToolBarManager toolBar = getViewSite().getActionBars().getToolBarManager(); toolBar.add(zoomOut); ITmfTrace trace = TmfTraceManager.getInstance().getActiveTrace(); if (trace != null && fDensityViewer != null) { fDensityViewer.loadTrace(trace); } }