Function insertSwitchButton

linuxdo-helper.user.js:416–450

* 将开关按钮插入到页面中 * @param {HTMLElement} buttonElement - 开关按钮元素

(buttonElement)

     * @param {HTMLElement} buttonElement - 开关按钮元素
     */
    function insertSwitchButton(buttonElement) {
        if (document.getElementById('linuxdo-helper-switch')) {
            return;
        }

        buttonElement.id = 'linuxdo-helper-switch';

        const chatButton = document.querySelector(SELECTORS.chatButton);

        if (chatButton?.parentNode) {
            chatButton.parentNode.insertBefore(buttonElement, chatButton.nextSibling);
            return;
        }

        const fallbackPosition = findFallbackInsertPosition();

        if (fallbackPosition?.parentNode) {
            fallbackPosition.parentNode.insertBefore(buttonElement, fallbackPosition.nextSibling);
            return;
        }

        const header = document.querySelector(SELECTORS.header) || document.querySelector('header');

        if (header) {
            const headerList = header.querySelector('ul') || header.querySelector('nav');

            if (headerList) {
                headerList.appendChild(buttonElement);
            } else {
                header.insertBefore(buttonElement, header.firstChild);
            }
        } else {
            console.log('【错误】未找到按钮插入位置！');
        }
    }

    /**
     * 创建并插入开关图标到页面