def evaluate_js(self, script):
"""
Evaluate given JavaScript code and return the result
:param script: The JavaScript code to be evaluated
:return: Return value of the evaluated code
"""
escaped_script = 'JSON.stringify(eval("{0}"))'.format(escape_string(script))
return self.gui.evaluate_js(escaped_script, self.uid)
def evaluate_js(script, uid='master'):
"""
Evaluate given JavaScript code and return the result
:param script: The JavaScript code to be evaluated
:param uid: uid of the target instance
:return: Return value of the evaluated code
"""
escaped_script = 'JSON.stringify(eval("{0}"))'.format(escape_string(script))
return gui.evaluate_js(escaped_script, uid)
def evaluate_js(self, script, callback=None):
"""
Evaluate given JavaScript code and return the result
:param script: The JavaScript code to be evaluated
:return: Return value of the evaluated code
:callback: Optional callback function that will be called for resolved promises
"""
unique_id = uuid1().hex
self._callbacks[unique_id] = callback
if self.gui.renderer == 'cef':
sync_eval = 'window.external.return_result(JSON.stringify(value), "{0}");'.format(
unique_id, )
else:
sync_eval = 'JSON.stringify(value);'
if callback:
escaped_script = """
var value = eval("{0}");
if (pywebview._isPromise(value)) {{
value.then(function evaluate_async(result) {{
pywebview._asyncCallback(JSON.stringify(result), "{1}")
}});
true;
}} else {{ {2} }}
""".format(escape_string(script), unique_id, sync_eval)
else:
escaped_script = """
var value = eval("{0}");
{1};
""".format(escape_string(script), sync_eval)
if self.gui.renderer == 'cef':
return self.gui.evaluate_js(escaped_script, self.uid, unique_id)
else:
return self.gui.evaluate_js(escaped_script, self.uid)
