223 lines
7.6 KiB
Python
Executable File
223 lines
7.6 KiB
Python
Executable File
# 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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import base64
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import os
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import warnings
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import zipfile
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from contextlib import contextmanager
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from io import BytesIO
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from selenium.webdriver.common.driver_finder import DriverFinder
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from selenium.webdriver.remote.webdriver import WebDriver as RemoteWebDriver
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from .options import Options
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from .remote_connection import FirefoxRemoteConnection
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from .service import Service
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class WebDriver(RemoteWebDriver):
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"""Controls the GeckoDriver and allows you to drive the browser."""
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CONTEXT_CHROME = "chrome"
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CONTEXT_CONTENT = "content"
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def __init__(
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self,
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options: Options = None,
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service: Service = None,
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keep_alive: bool = True,
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) -> None:
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"""Creates a new instance of the Firefox driver. Starts the service and
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then creates new instance of Firefox driver.
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:Args:
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- options - Instance of ``options.Options``.
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- service - (Optional) service instance for managing the starting and stopping of the driver.
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- keep_alive - Whether to configure remote_connection.RemoteConnection to use HTTP keep-alive.
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"""
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self.service = service if service else Service()
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options = options if options else Options()
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finder = DriverFinder(self.service, options)
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if finder.get_browser_path():
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options.binary_location = finder.get_browser_path()
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options.browser_version = None
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self.service.path = finder.get_driver_path()
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self.service.start()
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executor = FirefoxRemoteConnection(
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remote_server_addr=self.service.service_url,
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keep_alive=keep_alive,
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ignore_proxy=options._ignore_local_proxy,
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)
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try:
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super().__init__(command_executor=executor, options=options)
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except Exception:
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self.quit()
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raise
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self._is_remote = False
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def quit(self) -> None:
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"""Closes the browser and shuts down the GeckoDriver executable."""
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try:
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super().quit()
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except Exception:
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# We don't care about the message because something probably has gone wrong
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pass
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finally:
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self.service.stop()
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def set_context(self, context) -> None:
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self.execute("SET_CONTEXT", {"context": context})
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@contextmanager
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def context(self, context):
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"""Sets the context that Selenium commands are running in using a
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`with` statement. The state of the context on the server is saved
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before entering the block, and restored upon exiting it.
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:param context: Context, may be one of the class properties
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`CONTEXT_CHROME` or `CONTEXT_CONTENT`.
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Usage example::
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with selenium.context(selenium.CONTEXT_CHROME):
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# chrome scope
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... do stuff ...
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"""
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initial_context = self.execute("GET_CONTEXT").pop("value")
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self.set_context(context)
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try:
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yield
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finally:
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self.set_context(initial_context)
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def install_addon(self, path, temporary=False) -> str:
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"""Installs Firefox addon.
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Returns identifier of installed addon. This identifier can later
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be used to uninstall addon.
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:param temporary: allows you to load browser extensions temporarily during a session
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:param path: Absolute path to the addon that will be installed.
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:Usage:
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::
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driver.install_addon('/path/to/firebug.xpi')
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"""
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if os.path.isdir(path):
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fp = BytesIO()
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# filter all trailing slash found in path
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path = os.path.normpath(path)
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# account for trailing slash that will be added by os.walk()
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path_root = len(path) + 1
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with zipfile.ZipFile(fp, "w", zipfile.ZIP_DEFLATED) as zipped:
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for base, _, files in os.walk(path):
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for fyle in files:
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filename = os.path.join(base, fyle)
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zipped.write(filename, filename[path_root:])
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addon = base64.b64encode(fp.getvalue()).decode("UTF-8")
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else:
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with open(path, "rb") as file:
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addon = base64.b64encode(file.read()).decode("UTF-8")
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payload = {"addon": addon, "temporary": temporary}
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return self.execute("INSTALL_ADDON", payload)["value"]
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def uninstall_addon(self, identifier) -> None:
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"""Uninstalls Firefox addon using its identifier.
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:Usage:
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::
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driver.uninstall_addon('addon@foo.com')
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"""
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self.execute("UNINSTALL_ADDON", {"id": identifier})
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def get_full_page_screenshot_as_file(self, filename) -> bool:
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"""Saves a full document screenshot of the current window to a PNG
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image file. Returns False if there is any IOError, else returns True.
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Use full paths in your filename.
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:Args:
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- filename: The full path you wish to save your screenshot to. This
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should end with a `.png` extension.
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:Usage:
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::
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driver.get_full_page_screenshot_as_file('/Screenshots/foo.png')
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"""
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if not filename.lower().endswith(".png"):
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warnings.warn(
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"name used for saved screenshot does not match file type. It should end with a `.png` extension",
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UserWarning,
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)
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png = self.get_full_page_screenshot_as_png()
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try:
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with open(filename, "wb") as f:
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f.write(png)
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except OSError:
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return False
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finally:
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del png
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return True
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def save_full_page_screenshot(self, filename) -> bool:
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"""Saves a full document screenshot of the current window to a PNG
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image file. Returns False if there is any IOError, else returns True.
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Use full paths in your filename.
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:Args:
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- filename: The full path you wish to save your screenshot to. This
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should end with a `.png` extension.
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:Usage:
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::
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driver.save_full_page_screenshot('/Screenshots/foo.png')
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"""
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return self.get_full_page_screenshot_as_file(filename)
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def get_full_page_screenshot_as_png(self) -> bytes:
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"""Gets the full document screenshot of the current window as a binary
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data.
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:Usage:
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::
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driver.get_full_page_screenshot_as_png()
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"""
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return base64.b64decode(self.get_full_page_screenshot_as_base64().encode("ascii"))
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def get_full_page_screenshot_as_base64(self) -> str:
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"""Gets the full document screenshot of the current window as a base64
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encoded string which is useful in embedded images in HTML.
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:Usage:
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::
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driver.get_full_page_screenshot_as_base64()
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"""
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return self.execute("FULL_PAGE_SCREENSHOT")["value"]
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