idea plugin 进度条

ProgressManager.getInstance().run(new Task.Backgroundable(project, "Switching Env") {
    @Override
    public void run(@NotNull ProgressIndicator indicator) {
        indicator.setText("test");
        indicator.setIndeterminate(true);

        File from = new File(fromPath());
        File to = new File(toPath());

        if (to.exists()) to.delete();
        try {
            Files.copy(from.toPath(), to.toPath());
        } catch (IOException e1) {
            e1.printStackTrace();
        }

        replaceHost();

        // 重新从硬盘加载
        VirtualFile virtualFile = VfsUtil.findFileByIoFile(to, true);
        if (virtualFile != null) {
            virtualFile.refresh(true, false);
        }
    }
});