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Copy pathjavascript_bindings.pyx
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168 lines (147 loc) · 6.11 KB
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# Copyright (c) 2012 CEF Python, see the Authors file.
# All rights reserved. Licensed under BSD 3-clause license.
# Project website: https://github.com/cztomczak/cefpython
include "cefpython.pyx"
cdef class JavascriptBindings:
# By default binding only to top frame.
cdef public py_bool bindToFrames
cdef public py_bool bindToPopups
cdef public dict functions
cdef public dict properties
cdef public dict objects
def __init__(self, bindToFrames=False, bindToPopups=False):
self.functions = {}
self.properties = {}
self.objects = {}
self.bindToFrames = bool(bindToFrames)
self.bindToPopups = bool(bindToPopups)
cpdef py_bool GetBindToFrames(self):
return bool(self.bindToFrames)
cpdef py_bool GetBindToPopups(self):
return bool(self.bindToPopups)
cpdef py_void SetFunction(self, py_string name, object func):
self.SetProperty(name, func)
cpdef py_void SetObject(self, py_string name, object obj):
if not hasattr(obj, "__class__"):
raise Exception("JavascriptBindings.SetObject() failed: name=%s, "
"__class__ attribute missing, this is not an object" % name)
cdef dict methods = {}
cdef py_string key
cdef object method
cdef object predicate = inspect.ismethod
if isinstance(obj, (PyBrowser, PyFrame)):
predicate = inspect.isbuiltin
for value in inspect.getmembers(obj, predicate=predicate):
key = value[0]
method = value[1]
methods[key] = method
self.objects[name] = methods
cpdef object GetFunction(self, py_string name):
if name in self.functions:
return self.functions[name]
cpdef dict GetFunctions(self):
return self.functions
cpdef dict GetObjects(self):
return self.objects
cpdef object GetObjectMethod(self, py_string objectName, py_string methodName):
if objectName in self.objects:
if methodName in self.objects[objectName]:
return self.objects[objectName][methodName]
cpdef object GetFunctionOrMethod(self, py_string name):
# Name can be "someFunc" or "object.someMethod".
cdef list words
if "." in name:
words = name.split(".")
return self.GetObjectMethod(words[0], words[1])
else:
return self.GetFunction(name)
cpdef py_void SetProperty(self, py_string name, object value):
cdef object allowed = self.IsValueAllowedRecursively(value) # returns True or string.
if allowed is not True:
raise Exception("JavascriptBindings.SetProperty() failed: name=%s, "
"not allowed type: %s (this may be a type of a nested value)"
% (name, allowed))
cdef object valueType = type(value)
if IsFunctionOrMethod(valueType):
self.functions[name] = value
else:
self.properties[name] = value
cpdef py_void Rebind(self):
# Rebind() is called for both first-time binding and rebinding.
cdef PyBrowser pyBrowser
cdef dict functions
cdef dict properties
cdef dict objects
cdef dict methods
for browserId, pyBrowser in g_pyBrowsers.iteritems():
if pyBrowser.GetJavascriptBindings() != self:
continue
# Send to the Renderer process: functions, properties,
# objects and its methods, bindToFrames.
functions = {}
for funcName in self.functions:
functions[funcName] = None
properties = self.properties
objects = {}
for objectName in self.objects:
methods = {}
for methodName in self.objects[objectName]:
methods[methodName] = None
objects[objectName] = methods
mainFrame = pyBrowser.GetMainFrame()
if mainFrame.IsValid():
mainFrame.SendProcessMessage(cef_types.PID_RENDERER,
mainFrame.frameId, "DoJavascriptBindings", [{
"functions": functions,
"properties": properties,
"objects": objects,
"bindToFrames": self.bindToFrames
}])
cpdef dict GetProperties(self):
return self.properties
@staticmethod
def IsValueAllowed(object value):
return JavascriptBindings.IsValueAllowedRecursively(value) is True
@staticmethod
def IsValueAllowedRecursively(object value, py_bool recursion=False):
# When making changes here modify also Frame.SetProperty() as it
# checks for FunctionType, MethodType.
cdef object valueType = type(value)
cdef object valueType2
cdef object key
if valueType == list:
for val in value:
valueType2 = JavascriptBindings.IsValueAllowedRecursively(val, True)
if valueType2 is not True:
return valueType2.__name__
return True
elif valueType == bool:
return True
elif valueType == float:
return True
elif valueType == int:
return True
elif valueType == long:
return True
elif valueType == type(None):
return True
elif IsFunctionOrMethod(valueType):
if recursion:
return valueType.__name__
else:
return True
elif valueType == dict:
for key in value:
valueType2 = JavascriptBindings.IsValueAllowedRecursively(value[key], True)
if valueType2 is not True:
return valueType2.__name__
return True
elif valueType == str or valueType == bytes:
return True
elif PY_MAJOR_VERSION < 3 and valueType == unicode:
# The unicode type is not defined in Python 3.
return True
elif valueType == tuple:
return True
else:
return valueType.__name__