如何以通用方式启用/禁用剪切/复制/粘贴菜单和工具栏项？

function checkPasteFeatures() {
    const paste = {
        enabled: false,
        copy: false,
        paste: false
    };

    // 检测剪贴板功能
    const clipboardEvent = new ClipboardEvent('clipboard');
    clipboardEvent.clearData();
    Object.assign(clipboardEvent, paste);
    document.dispatchEvent(clipboardEvent);

    // 检查工具栏粘贴项
    const menuItem = document.querySelector('#paste-menu-item');
    const menuBar = document.querySelector('#menu-bar');

    if (menuItem && menuBar) {
        paste.enabled = menuItem.disabled ? false : true;
        paste.paste = menuBar.querySelector('.paste-label') && menuBar.querySelector('.paste-label').style.display !== 'none' ? true : false;
        paste.copy = menuBar.querySelector('.copy-label') && menuBar.querySelector('.copy-label').style.display !== 'none' ? true : false;
        document.dispatchEvent(new Event('pasteFeatures'));
    }

    return paste;
}

function savePasteFeaturesToStorage() {
    const storage = JSON.parse(sessionStorage.getItem('pasteFeatures')) || {
        enabled: false,
        paste: false,
        copy: false
    };
    const enabled = clipboardEvent.enabled;
    const paste = clipboardEvent.paste;
    const copy = clipboardEvent.copy;

    storage.enabled = enabled;
    storage.paste = paste;
    storage.copy = copy;
    sessionStorage.setItem('pasteFeatures', JSON.stringify(storage));
}

function handlepasteFeatures() {
    const currentSession = JSON.parse(sessionStorage.getItem('pasteFeatures'));
    const enabled = currentSession.enabled;

    if (enabled === false) {
        clipboardEvent.enabled = !clipboardEvent.enabled;
    } else {
        clipboardEvent.enabled = enabled;
        clipboardEvent.copy = currentSession.copy;
        clipboardEvent.paste = currentSession.paste;
    }

    savePasteFeaturesToStorage();
}

// 启用或禁用剪贴、复制和粘贴
document.addEventListener('pasteFeatures', handlepasteFeatures, false);