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import json
import logging
import os
import webbrowser
import winreg
from threading import Semaphore
import clr
from webview import _settings, settings as webview_settings
from webview.dom import _dnd_state
from webview.js.css import disable_text_select
from webview.util import DEFAULT_HTML, create_cookie, interop_dll_path, js_bridge_call, inject_pywebview
clr.AddReference('System.Windows.Forms')
clr.AddReference('System.Collections')
clr.AddReference('System.Threading')
import System.Windows.Forms as WinForms
from System import Action, Func, String, Type, Uri
from System.Collections.Generic import List
from System.Drawing import Color
from System.Globalization import CultureInfo
from System.Threading.Tasks import Task, TaskScheduler
clr.AddReference(interop_dll_path('Microsoft.Web.WebView2.Core.dll'))
clr.AddReference(interop_dll_path('Microsoft.Web.WebView2.WinForms.dll'))
from Microsoft.Web.WebView2.Core import CoreWebView2Cookie, CoreWebView2ServerCertificateErrorAction
from Microsoft.Web.WebView2.WinForms import CoreWebView2CreationProperties, WebView2
for platform in ('win-arm64', 'win-x64', 'win-x86'):
os.environ['Path'] += ';' + interop_dll_path(platform)
logger = logging.getLogger('pywebview')
class EdgeChrome:
def __init__(self, form, window, cache_dir):
self.pywebview_window = window
self.web_view = WebView2()
props = CoreWebView2CreationProperties()
props.UserDataFolder = cache_dir
props.set_IsInPrivateModeEnabled(_settings['private_mode'])
props.AdditionalBrowserArguments = '--disable-features=ElasticOverscroll'
if webview_settings['ALLOW_FILE_URLS']:
props.AdditionalBrowserArguments += ' --allow-file-access-from-files'
self.web_view.CreationProperties = props
self.form = form
form.Controls.Add(self.web_view)
self.js_results = {}
self.js_result_semaphore = Semaphore(0)
self.web_view.Dock = WinForms.DockStyle.Fill
self.web_view.BringToFront()
self.web_view.CoreWebView2InitializationCompleted += self.on_webview_ready
self.web_view.NavigationStarting += self.on_navigation_start
self.web_view.NavigationCompleted += self.on_navigation_completed
self.web_view.WebMessageReceived += self.on_script_notify
self.syncContextTaskScheduler = TaskScheduler.FromCurrentSynchronizationContext()
self.web_view.DefaultBackgroundColor = Color.FromArgb(255, int(window.background_color.lstrip("#")[0:2], 16), int(window.background_color.lstrip("#")[2:4], 16), int(window.background_color.lstrip("#")[4:6], 16))
if window.transparent:
self.web_view.DefaultBackgroundColor = Color.Transparent
self.url = None
self.ishtml = False
self.html = DEFAULT_HTML
self.web_view.EnsureCoreWebView2Async(None)
def evaluate_js(self, script, semaphore, js_result, callback=None):
def _callback(result):
if callback is None:
result = None if result is None or result == '' else json.loads(result)
js_result.append(result)
semaphore.release()
else:
# future js callback option to handle async js method
callback(result)
js_result.append(None)
semaphore.release()
try:
self.web_view.ExecuteScriptAsync(script).ContinueWith(
Action[Task[String]](lambda task: _callback(json.loads(task.Result))),
self.syncContextTaskScheduler,
)
except Exception:
logger.exception('Error occurred in script')
js_result.append(None)
semaphore.release()
def get_cookies(self, cookies, semaphore):
def _callback(task):
for c in task.Result:
_cookies.append(c)
self.web_view.Invoke(Func[Type](_parse_cookies))
def _parse_cookies():
# cookies must be accessed in the main thread, otherwise an exception is thrown
# https://github.com/MicrosoftEdge/WebView2Feedback/issues/1976
for c in _cookies:
same_site = None if c.SameSite == 0 else str(c.SameSite).lower()
try:
data = {
'name': c.Name,
'value': c.Value,
'path': c.Path,
'domain': c.Domain,
'expires': c.Expires.ToString('r', CultureInfo.GetCultureInfo('en-US')),
'secure': c.IsSecure,
'httponly': c.IsHttpOnly,
'samesite': same_site,
}
cookie = create_cookie(data)
cookies.append(cookie)
except Exception as e:
logger.exception(e)
semaphore.release()
_cookies = []
self.web_view.CoreWebView2.CookieManager.GetCookiesAsync(self.url).ContinueWith(
Action[Task[List[CoreWebView2Cookie]]](_callback), self.syncContextTaskScheduler
)
def get_current_url(self):
return self.url
def load_html(self, content, _):
self.html = content
self.ishtml = True
self.pywebview_window.events.loaded.clear()
if self.web_view.CoreWebView2:
self.web_view.CoreWebView2.NavigateToString(self.html)
else:
self.web_view.EnsureCoreWebView2Async(None)
def load_url(self, url):
self.ishtml = False
self.web_view.Source = Uri(url)
def on_certificate_error(self, _, args):
args.set_Action(CoreWebView2ServerCertificateErrorAction.AlwaysAllow)
def on_script_notify(self, _, args):
try:
return_value = args.get_WebMessageAsJson()
if return_value == '"FilesDropped"':
if _dnd_state['num_listeners'] == 0:
return
files = [
(os.path.basename(file.Path), file.Path)
for file
in list(args.get_AdditionalObjects())
if 'CoreWebView2File' in str(type(file))
]
_dnd_state['paths'] += files
return
func_name, func_param, value_id = json.loads(return_value)
func_param = json.loads(func_param)
if func_name == 'alert':
WinForms.MessageBox.Show(func_param)
elif func_name == 'console':
print(func_param)
else:
js_bridge_call(self.pywebview_window, func_name, func_param, value_id)
except Exception:
logger.exception('Exception occurred during on_script_notify')
def on_new_window_request(self, sender, args):
args.set_Handled(True)
if webview_settings['OPEN_EXTERNAL_LINKS_IN_BROWSER']:
webbrowser.open(str(args.get_Uri()))
else:
self.load_url(str(args.get_Uri()))
def on_webview_ready(self, sender, args):
if not args.IsSuccess:
logger.error(
'WebView2 initialization failed with exception:\n '
+ str(args.InitializationException)
)
return
sender.CoreWebView2.NewWindowRequested += self.on_new_window_request
if _settings['ssl']:
sender.CoreWebView2.ServerCertificateErrorDetected += self.on_certificate_error
sender.CoreWebView2.DownloadStarting += self.on_download_starting
settings = sender.CoreWebView2.Settings
settings.AreBrowserAcceleratorKeysEnabled = _settings['debug']
settings.AreDefaultContextMenusEnabled = _settings['debug']
settings.AreDefaultScriptDialogsEnabled = True
settings.AreDevToolsEnabled = _settings['debug']
settings.IsBuiltInErrorPageEnabled = True
settings.IsScriptEnabled = True
settings.IsWebMessageEnabled = True
settings.IsStatusBarEnabled = _settings['debug']
settings.IsSwipeNavigationEnabled = False
settings.IsZoomControlEnabled = True
if _settings['user_agent']:
settings.UserAgent = _settings['user_agent']
if _settings['private_mode']:
# cookies persist even if UserDataFolder is in memory. We have to delete cookies manually.
sender.CoreWebView2.CookieManager.DeleteAllCookies()
if self.pywebview_window.real_url:
self.load_url(self.pywebview_window.real_url)
elif self.pywebview_window.html:
self.html = self.pywebview_window.html
self.load_html(self.pywebview_window.html, '')
if _settings['debug'] and webview_settings['OPEN_DEVTOOLS_IN_DEBUG']:
sender.CoreWebView2.OpenDevToolsWindow()
def on_download_starting(self, sender, args):
if not webview_settings['ALLOW_DOWNLOADS']:
args.Cancel = True
return
dialog = WinForms.SaveFileDialog()
try:
with winreg.OpenKey(winreg.HKEY_CURRENT_USER, r'Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders') as windows_key:
dialog.InitialDirectory = winreg.QueryValueEx(windows_key, '{374DE290-123F-4565-9164-39C4925E467B}')[0]
except Exception as e:
logger.exception(e)
dialog.Filter = self.pywebview_window.localization['windows.fileFilter.allFiles'] + ' (*.*)|*.*'
dialog.RestoreDirectory = True
dialog.FileName = os.path.basename(args.ResultFilePath)
result = dialog.ShowDialog(self.form)
if result == WinForms.DialogResult.OK:
args.ResultFilePath = dialog.FileName
else:
args.Cancel = True
def on_navigation_start(self, sender, args):
pass
def on_navigation_completed(self, sender, _):
url = str(sender.Source)
self.url = None if self.ishtml else url
self.web_view.ExecuteScriptAsync(inject_pywebview(self.pywebview_window, 'chromium'))
if not self.pywebview_window.text_select:
self.web_view.ExecuteScriptAsync(disable_text_select)
self.pywebview_window.events.loaded.set()
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