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# Licensed to the Software Freedom Conservancy (SFC) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The SFC licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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from __future__ import annotations
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from hashlib import md5 as md5_hash
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from typing import TYPE_CHECKING
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from selenium.common.exceptions import InvalidSelectorException
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from selenium.webdriver.common.by import By
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from selenium.webdriver.remote.command import Command
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if TYPE_CHECKING:
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# we only import these when the module is analyzed for type annotations
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# to avoid a circular import when it is run normally
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from selenium.webdriver.remote.webelement import WebElement
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class ShadowRoot:
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# TODO: We should look and see how we can create a search context like Java/.NET
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def __init__(self, session, id_) -> None:
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self.session = session
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self._id = id_
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def __eq__(self, other_shadowroot) -> bool:
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return self._id == other_shadowroot._id
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def __hash__(self) -> int:
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return int(md5_hash(self._id.encode("utf-8")).hexdigest(), 16)
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def __repr__(self) -> str:
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return '<{0.__module__}.{0.__name__} (session="{1}", element="{2}")>'.format(
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type(self), self.session.session_id, self._id
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)
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@property
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def id(self) -> str:
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return self._id
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def find_element(self, by: str = By.ID, value: str | None = None) -> WebElement:
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"""Find an element inside a shadow root given a By strategy and locator.
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Args:
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by: The locating strategy to use. Default is `By.ID`. Supported values include:
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- By.ID: Locate by element ID.
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- By.NAME: Locate by the `name` attribute.
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- By.XPATH: Locate by an XPath expression.
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- By.CSS_SELECTOR: Locate by a CSS selector.
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- By.CLASS_NAME: Locate by the `class` attribute.
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- By.TAG_NAME: Locate by the tag name (e.g., "input", "button").
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- By.LINK_TEXT: Locate a link element by its exact text.
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- By.PARTIAL_LINK_TEXT: Locate a link element by partial text match.
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value: The locator value to use with the specified `by` strategy.
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Returns:
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The first matching `WebElement` found on the page.
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Example:
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>>> element = driver.find_element(By.ID, "foo")
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"""
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if by == By.ID:
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by = By.CSS_SELECTOR
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value = f'[id="{value}"]'
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elif by == By.CLASS_NAME:
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if value and any(char.isspace() for char in value.strip()):
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raise InvalidSelectorException("Compound class names are not allowed.")
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by = By.CSS_SELECTOR
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value = f".{value}"
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elif by == By.NAME:
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by = By.CSS_SELECTOR
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value = f'[name="{value}"]'
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return self._execute(Command.FIND_ELEMENT_FROM_SHADOW_ROOT, {"using": by, "value": value})["value"]
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def find_elements(self, by: str = By.ID, value: str | None = None) -> list[WebElement]:
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"""Find elements inside a shadow root given a By strategy and locator.
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Args:
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by: The locating strategy to use. Default is `By.ID`. Supported values include:
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- By.ID: Locate by element ID.
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- By.NAME: Locate by the `name` attribute.
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- By.XPATH: Locate by an XPath expression.
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- By.CSS_SELECTOR: Locate by a CSS selector.
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- By.CLASS_NAME: Locate by the `class` attribute.
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- By.TAG_NAME: Locate by the tag name (e.g., "input", "button").
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- By.LINK_TEXT: Locate a link element by its exact text.
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- By.PARTIAL_LINK_TEXT: Locate a link element by partial text match.
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value: The locator value to use with the specified `by` strategy.
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Returns:
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List of `WebElements` matching locator strategy found on the page.
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Example:
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>>> element = driver.find_elements(By.ID, "foo")
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"""
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if by == By.ID:
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by = By.CSS_SELECTOR
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value = f'[id="{value}"]'
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elif by == By.CLASS_NAME:
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if value and any(char.isspace() for char in value.strip()):
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raise InvalidSelectorException("Compound class names are not allowed.")
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by = By.CSS_SELECTOR
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value = f".{value}"
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elif by == By.NAME:
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by = By.CSS_SELECTOR
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value = f'[name="{value}"]'
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return self._execute(Command.FIND_ELEMENTS_FROM_SHADOW_ROOT, {"using": by, "value": value})["value"]
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# Private Methods
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def _execute(self, command, params=None):
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"""Executes a command against the underlying HTML element.
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Args:
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command: The name of the command to _execute as a string.
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params: A dictionary of named parameters to send with the command.
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Returns:
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The command's JSON response loaded into a dictionary object.
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"""
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if not params:
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params = {}
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params["shadowId"] = self._id
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return self.session.execute(command, params)
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