增加对shadow-dom支持，未完成

DrissionPage/driver_element.py

@@ -123,6 +123,11 @@ class DriverElement(DrissionElement):
         '''
         return self.run_script(js)
 
+    @property
+    def shadow_root(self):
+        e = self.run_script('return arguments[0].shadowRoot')
+        return ShadowRootElement(e, self) if e else None
+
     @property
     def parent(self):
         """返回父级元素"""
@@ -445,6 +450,37 @@ class DriverElement(DrissionElement):
         ActionChains(self._driver).move_to_element(self.inner_ele).perform()
 
 
+class ShadowRootElement(DrissionElement):
+    def __init__(self, inner_ele: WebElement, parent_ele: DriverElement):
+        super().__init__(inner_ele)
+        self.parent_ele = parent_ele
+
+    def ele(self, loc: Union[tuple, str], mode: str = None, show_errmsg: bool = True):
+        pass
+
+    def eles(self, loc: Union[tuple, str], show_errmsg: bool = True):
+        pass
+
+    def attr(self, attr: str):
+        return self.html if attr == 'innerHTML' else None
+
+    def run_script(self, script: str, *args) -> Any:
+        """执行js代码，传入自己为第一个参数  \n
+        :param script: js文本
+        :param args: 传入的参数
+        :return: js执行结果
+        """
+        return self.inner_ele.parent.execute_script(script, self.inner_ele, *args)
+
+    @property
+    def html(self):
+        return unescape(self.attr('innerHTML')).replace('\xa0', ' ')
+
+    @property
+    def parent(self) -> DriverElement:
+        return self.parent_ele
+
+
 def execute_driver_find(page_or_ele: Union[WebElement, WebDriver],
                         loc: tuple,
                         mode: str = 'single',