private SolutionBrowserPanel() { RootPanel.get().getElement().getStyle().setProperty("position", "relative"); dragController = new SolutionBrowserDragController(contentTabPanel); instance = this; ExecuteUrlInNewTabCommand.setupNativeHooks(); SolutionBrowserPanel.setupNativeHooks(this); solutionTree.addTreeListener(treeListener); initializeExecutableFileTypes(); buildUI(); }