def evaluate(script):
result = self.webkit.windowScriptObject().evaluateWebScript_(
'JSON.stringify(eval("{0}"))'.format(_escape_string(script)))
JSResult.result = None if result is WebKit.WebUndefined.undefined(
) or result == 'null' else json.loads(result)
JSResult.result_semaphore.release()
def evaluate_js(self, script):
def _evaluate_js():
self.webview.execute_script(code)
self._js_result_semaphore.release()
unique_id = uuid1().hex
# Backup the doc title and store the result in it with a custom prefix
code = 'oldTitle{0} = document.title; document.title = eval("{1}");'.format(
unique_id, _escape_string(script))
self.load_event.wait()
glib.idle_add(_evaluate_js)
self._js_result_semaphore.acquire()
if not gtk.main_level():
# Webview has been closed, don't proceed
return None
# Restore document title and return
_js_result = self._parse_js_result(self.webview.get_title())
code = 'document.title = oldTitle{0};'.format(unique_id)
glib.idle_add(self.webview.execute_script, code)
return _js_result
def evaluate_js(self, script):
def _evaluate_js():
self.webview.execute_script(code)
result_semaphore.release()
self.eval_js_lock.acquire()
result_semaphore = Semaphore(0)
self.js_result_semaphores.append(result_semaphore)
# Backup the doc title and store the result in it with a custom prefix
unique_id = uuid1().hex
code = 'window.oldTitle{0} = document.title; document.title = JSON.stringify(eval("{1}"));'.format(
unique_id, _escape_string(script))
self.load_event.wait()
glib.idle_add(_evaluate_js)
result_semaphore.acquire()
if not gtk.main_level():
# Webview has been closed, don't proceed
return None
result = self.webview.get_title()
result = None if result == 'undefined' or result == 'null' else result if result == '' else json.loads(
result)
# Restore document title and return
code = 'document.title = window.oldTitle{0}'.format(unique_id)
glib.idle_add(_evaluate_js)
self.js_result_semaphores.remove(result_semaphore)
self.eval_js_lock.release()
return result
def _evaluate_js():
document = window.web_browser.Document
result = document.InvokeScript(
'eval',
('JSON.stringify(eval("{0}"))'.format(_escape_string(script)), ))
window.js_result = None if result is None or result is 'null' else json.loads(
result)
window.js_result_semaphore.release()
def _evaluate_js():
document = self.browser.web_browser.Document
script_element = document.CreateElement('script')
function_name = 'invoke' + uuid1().hex
code = 'function {0}() {{return eval("{1}")}}'.format(
function_name, _escape_string(script))
script_element.InnerText = code
document.Body.AppendChild(script_element)
self._js_result = document.InvokeScript(function_name)
self._js_result_semaphor.release()
def on_status_change(self, webview, status):
try:
delim = '_' + self.js_bridge.uid + '_'
except AttributeError:
return
# Check if status was updated by a JSBridge call
if status.startswith(delim):
_, func_name, param = status.split(delim)
return_val = self.js_bridge.call(func_name, param)
# Give back the return value to JS as a string
code = 'pywebview._bridge.return_val = "{0}";'.format(_escape_string(str(return_val)))
webview.execute_script(code)
def evaluate_js(self, script):
def _evaluate_js():
self.webview.execute_script(code)
self._js_result_semaphore.release()
unique_id = uuid1().hex
# Backup the doc title and store the result in it with a custom prefix
code = 'oldTitle{0} = document.title; document.title = eval("{1}");'.format(
unique_id, _escape_string(script))
glib.idle_add(_evaluate_js)
self._js_result_semaphore.acquire()
# Restore document title and return
_js_result = self.webview.get_title()
code = 'document.title = oldTitle{0};'.format(unique_id)
glib.idle_add(self.webview.execute_script, code)
return _js_result
def on_evaluate_js(self, script, uuid):
def return_result(result):
result = BrowserView._convert_string(result)
uuid_ = BrowserView._convert_string(uuid)
js_result = self._js_results[uuid_]
js_result[
'result'] = None if result is None or result == 'null' else result if result == '' else json.loads(
result)
js_result['semaphore'].release()
escaped_script = 'JSON.stringify(eval("{0}"))'.format(
_escape_string(script))
try: # PyQt4
result = self.view.page().mainFrame().evaluateJavaScript(
escaped_script)
return_result(result)
except AttributeError: # PyQt5
self.view.page().runJavaScript(escaped_script, return_result)