SelectAllProjectExplorerHandler.java 文件源码

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
    IWorkbenchWindow activeWorkbenchWindow = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (null == activeWorkbenchWindow) {
        return null;
    }
    IWorkbenchPage activePage = activeWorkbenchWindow.getActivePage();
    if (null == activePage) {
        return null;
    }
    IWorkbenchPart activePart = activePage.getActivePart();
    if (!(activePart instanceof CommonNavigator)) {
        return null;
    }

    CommonNavigator navigator = (CommonNavigator) activePart;
    CommonViewer commonViewer = navigator.getCommonViewer();

    Tree navigatorTree = commonViewer.getTree();
    List<TreeItem> visibleItems = new ArrayList<>();
    collectChildren(navigatorTree.getItems(), visibleItems);

    List<Object> visibleData = visibleItems.stream().map(i -> i.getData()).collect(Collectors.toList());

    commonViewer.setSelection(new StructuredSelection(visibleData), false);

    return null;
}