def __init__(self, verbosity=0):
super(QWebPage, self).__init__()
self.verbosity = verbosity
self.callbacks = {
"on_request": [],
"on_response_headers": [],
"on_response": [],
}
self.mainFrame().urlChanged.connect(self.on_url_changed)
self.mainFrame().titleChanged.connect(self.on_title_changed)
self.mainFrame().loadFinished.connect(self.on_load_finished)
# self.mainFrame().initialLayoutCompleted.connect(self.on_layout_completed) # TODO: add signal
self.har = HarBuilder()
def __init__(self, verbosity=0):
super(QWebPage, self).__init__()
self.verbosity = verbosity
self.callbacks = {
"on_request": [],
"on_response_headers": [],
"on_response": [],
}
self.mainFrame().urlChanged.connect(self.on_url_changed)
self.mainFrame().titleChanged.connect(self.on_title_changed)
self.mainFrame().loadFinished.connect(self.on_load_finished)
self.mainFrame().initialLayoutCompleted.connect(
self.on_layout_completed)
self.har = HarBuilder()
self.setForwardUnsupportedContent(True)
self.unsupportedContent.connect(self.handleUnsupportedContent)
self.unsupported_content_handler = lambda reply: None
def __init__(self, verbosity=0):
super(QWebPage, self).__init__()
self.verbosity = verbosity
self.callbacks = {
"on_request": [],
"on_response_headers": [],
"on_response": [],
}
self.mainFrame().urlChanged.connect(self.on_url_changed)
self.mainFrame().titleChanged.connect(self.on_title_changed)
self.mainFrame().loadFinished.connect(self.on_load_finished)
self.mainFrame().initialLayoutCompleted.connect(self.on_layout_completed)
self.har = HarBuilder()
class SplashQWebPage(QWebPage):
"""
QWebPage subclass that:
* changes user agent;
* logs JS console messages;
* handles alert and confirm windows;
* returns additional info about render errors;
* logs HAR events;
* stores options for various Splash components.
"""
error_info = None
custom_user_agent = None
custom_headers = None
skip_custom_headers = False
navigation_locked = False
resource_timeout = 0
response_body_enabled = False
def __init__(self, verbosity=0):
super(QWebPage, self).__init__()
self.verbosity = verbosity
self.callbacks = {
"on_request": [],
"on_response_headers": [],
"on_response": [],
}
self.mainFrame().urlChanged.connect(self.on_url_changed)
self.mainFrame().titleChanged.connect(self.on_title_changed)
self.mainFrame().loadFinished.connect(self.on_load_finished)
# self.mainFrame().initialLayoutCompleted.connect(self.on_layout_completed) # TODO: add signal
self.har = HarBuilder()
# webengine don't need mainFrame
def mainFrame(self):
return self
def reset_har(self):
self.har.reset()
def clear_callbacks(self, event=None):
"""
Unregister all callbacks for an event. If event is None
then all callbacks are removed.
"""
if event is None:
for ev in self.callbacks:
assert ev is not None
self.clear_callbacks(ev)
return
del self.callbacks[event][:]
def on_title_changed(self, title):
self.har.store_title(title)
def on_url_changed(self, url):
self.har.store_url(url)
def on_load_finished(self, ok):
self.har.store_timing("onLoad")
self.har.store_timing("onContentLoad")
def on_layout_completed(self):
self.har.store_timing("onContentLoad")
def acceptNavigationRequest(self, webFrame, networkRequest,
navigationType):
if self.navigation_locked:
return False
self.error_info = None
return super(SplashQWebPage,
self).acceptNavigationRequest(webFrame, networkRequest,
navigationType)
def javaScriptAlert(self, frame, msg):
return
def javaScriptConfirm(self, frame, msg):
return False
def javaScriptConsoleMessage(self, level, msg, line_number, source_id):
if self.verbosity >= 2:
log.msg("JsConsole(%s:%d): %s" % (source_id, line_number, msg),
system='render')
def userAgentForUrl(self, url):
if self.custom_user_agent is None:
return super(SplashQWebPage, self).userAgentForUrl(url)
else:
return self.custom_user_agent
# loadFinished signal handler receives ok=False at least these cases:
# 1. when there is an error with the page (e.g. the page is not available);
# 2. when a redirect happened before all related resource are loaded;
# 3. when page sends headers that are not parsed correctly
# (e.g. a bad Content-Type).
# By implementing ErrorPageExtension we can catch (1) and
# distinguish it from (2) and (3).
def extension(self, extension, info=None, errorPage=None):
if extension == QWebPage.ErrorPageExtension:
# catch the error, populate self.errorInfo and return an error page
info = sip.cast(info, QWebPage.ErrorPageExtensionOption)
domain = 'Unknown'
if info.domain == QWebPage.QtNetwork:
domain = 'Network'
elif info.domain == QWebPage.Http:
domain = 'HTTP'
elif info.domain == QWebPage.WebKit:
domain = 'WebKit'
self.error_info = RenderErrorInfo(domain, int(info.error),
str(info.errorString),
str(info.url.toString()))
# XXX: this page currently goes nowhere
content = u"""
<html><head><title>Failed loading page</title></head>
<body>
<h1>Failed loading page ({0.text})</h1>
<h2>{0.url}</h2>
<p>{0.type} error #{0.code}</p>
</body></html>""".format(self.error_info)
errorPage = sip.cast(errorPage, QWebPage.ErrorPageExtensionReturn)
errorPage.content = QByteArray(content.encode('utf-8'))
return True
# XXX: this method always returns True, even if we haven't
# handled the extension. Is it correct? When can this method be
# called with extension which is not ErrorPageExtension if we
# are returning False in ``supportsExtension`` for such extensions?
return True
def supportsExtension(self, extension):
if extension == QWebPage.ErrorPageExtension:
return True
return False
def maybe_redirect(self, load_finished_ok):
"""
Return True if the current webpage state looks like a redirect.
Use this function from loadFinished handler to ignore spurious
signals.
FIXME: This can return True if server returned incorrect
Content-Type header, but there is no an additional loadFinished
signal in this case.
"""
return not load_finished_ok and self.error_info is None
def is_ok(self, load_finished_ok):
return load_finished_ok and self.error_info is None
def error_loading(self, load_finished_ok):
return load_finished_ok and self.error_info is not None
class SplashQWebPage(QWebPage):
"""
QWebPage subclass that:
* changes user agent;
* logs JS console messages;
* handles alert and confirm windows;
* returns additional info about render errors;
* logs HAR events;
* stores options for various Splash components.
"""
error_info = None
custom_user_agent = None
custom_headers = None
skip_custom_headers = False
navigation_locked = False
resource_timeout = 0
def __init__(self, verbosity=0):
super(QWebPage, self).__init__()
self.verbosity = verbosity
self.cookiejar = SplashCookieJar(self)
self.callbacks = {
"on_request": [],
"on_response_headers": [],
"on_response": [],
}
self.mainFrame().urlChanged.connect(self.on_url_changed)
self.mainFrame().titleChanged.connect(self.on_title_changed)
self.mainFrame().loadFinished.connect(self.on_load_finished)
self.mainFrame().initialLayoutCompleted.connect(self.on_layout_completed)
self.har = HarBuilder()
def reset_har(self):
self.har.reset()
def on_title_changed(self, title):
self.har.store_title(title)
def on_url_changed(self, url):
self.har.store_url(url)
def on_load_finished(self, ok):
self.har.store_timing("onLoad")
def on_layout_completed(self):
self.har.store_timing("onContentLoad")
def acceptNavigationRequest(self, webFrame, networkRequest, navigationType):
if self.navigation_locked:
return False
self.error_info = None
return super(SplashQWebPage, self).acceptNavigationRequest(webFrame, networkRequest, navigationType)
def javaScriptAlert(self, frame, msg):
return
def javaScriptConfirm(self, frame, msg):
return False
def javaScriptConsoleMessage(self, msg, line_number, source_id):
if self.verbosity >= 2:
log.msg("JsConsole(%s:%d): %s" % (source_id, line_number, msg), system='render')
def userAgentForUrl(self, url):
if self.custom_user_agent is None:
return super(SplashQWebPage, self).userAgentForUrl(url)
else:
return self.custom_user_agent
# loadFinished signal handler receives ok=False at least these cases:
# 1. when there is an error with the page (e.g. the page is not available);
# 2. when a redirect happened before all related resource are loaded;
# 3. when page sends headers that are not parsed correctly
# (e.g. a bad Content-Type).
# By implementing ErrorPageExtension we can catch (1) and
# distinguish it from (2) and (3).
def extension(self, extension, info=None, errorPage=None):
if extension == QWebPage.ErrorPageExtension:
# catch the error, populate self.errorInfo and return an error page
info = sip.cast(info, QWebPage.ErrorPageExtensionOption)
domain = 'Unknown'
if info.domain == QWebPage.QtNetwork:
domain = 'Network'
elif info.domain == QWebPage.Http:
domain = 'HTTP'
elif info.domain == QWebPage.WebKit:
domain = 'WebKit'
self.error_info = RenderErrorInfo(
domain,
int(info.error),
six.text_type(info.errorString),
six.text_type(info.url.toString())
)
# XXX: this page currently goes nowhere
content = u"""
<html><head><title>Failed loading page</title></head>
<body>
<h1>Failed loading page ({0.text})</h1>
<h2>{0.url}</h2>
<p>{0.type} error #{0.code}</p>
</body></html>""".format(self.error_info)
errorPage = sip.cast(errorPage, QWebPage.ErrorPageExtensionReturn)
errorPage.content = QByteArray(content.encode('utf-8'))
return True
# XXX: this method always returns True, even if we haven't
# handled the extension. Is it correct? When can this method be
# called with extension which is not ErrorPageExtension if we
# are returning False in ``supportsExtension`` for such extensions?
return True
def supportsExtension(self, extension):
if extension == QWebPage.ErrorPageExtension:
return True
return False
def maybe_redirect(self, load_finished_ok):
"""
Return True if the current webpage state looks like a redirect.
Use this function from loadFinished handler to ignore spurious
signals.
FIXME: This can return True if server returned incorrect
Content-Type header, but there is no an additional loadFinished
signal in this case.
"""
return not load_finished_ok and self.error_info is None
def is_ok(self, load_finished_ok):
return load_finished_ok and self.error_info is None
def error_loading(self, load_finished_ok):
return load_finished_ok and self.error_info is not None
