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Copy pathjavascript_bindings.pyx
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190 lines (142 loc) · 5.63 KB
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# Copyright (c) 2012 CefPython Authors. All rights reserved.
# License: New BSD License.
# Website: http://code.google.com/p/cefpython/
cdef class JavascriptBindings:
# By default we bind only to top frame.
cdef public int bindToFrames
cdef public int bindToPopups
cdef public dict functions
cdef public dict properties
cdef public dict objects
# V8ContextHandler_OnContextCreated inserts frames here that should have javascript bindings,
# it is later needed to do rebinding using Rebind() method. All frames are here, the main too,
# frames may be from different Browser objects.
cdef public dict frames # frameIdentifier(int64) : tuple(PyBrowser, PyFrame())
def __init__(self, bindToFrames=False, bindToPopups=False):
# Initialize default values.
self.functions = {}
self.properties = {}
self.objects = {}
self.frames = {}
self.bindToFrames = int(bindToFrames)
self.bindToPopups = int(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 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 valueType == types.FunctionType or valueType == types.MethodType:
self.functions[name] = value
else:
self.properties[name] = value
cdef py_void AddFrame(self, PyBrowser pyBrowser, PyFrame pyFrame):
if pyFrame.GetIdentifier() not in self.frames:
Debug("JavascriptBindings.AddFrame(): frameId=%s" % pyFrame.GetIdentifier())
self.frames[pyFrame.GetIdentifier()] = (pyBrowser, pyFrame)
cdef py_void RemoveFrame(self, PyBrowser pyBrowser, PyFrame pyFrame):
if pyFrame.GetIdentifier() in self.frames:
Debug("JavascriptBindings.RemoveFrame(): frameId=%s" % pyFrame.GetIdentifier())
del self.frames[pyFrame.GetIdentifier()]
cpdef py_void Rebind(self):
assert IsCurrentThread(TID_UI), "JavascriptBindings.Rebind() may only be called on UI thread"
cdef CefRefPtr[CefBrowser] cefBrowser
cdef CefRefPtr[CefFrame] cefFrame
cdef CefRefPtr[CefV8Context] v8Context
cdef c_bool sameContext
cdef PyBrowser pyBrowser
cdef PyFrame pyFrame
for frameID in self.__frames:
pyBrowser = self.frames[frameID][0]
pyFrame = self.frames[frameID][1]
cefBrowser = pyBrowser.GetCefBrowser()
cefFrame = pyFrame.GetCefFrame()
v8Context = cefFrame.get().GetV8Context()
sameContext = v8Context.get().IsSame(cef_v8_static.GetCurrentContext())
if not sameContext:
Debug("JavascriptBindings.Rebind(): inside a different context, calling v8Context.Enter()")
assert v8Context.get().Enter(), "v8Context.Enter() failed"
V8ContextHandler_OnContextCreated(cefBrowser, cefFrame, v8Context)
if not sameContext:
assert v8Context.get().Exit(), "v8Context.Exit() failed"
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 also check: Frame.SetProperty() as it checks
# for FunctionType, MethodType.
# - Return value: True - allowed, string - not allowed
# - Not using type().__name__ here as it is not consistent,
# for int it is "int" but for None it is "NoneType".
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 == type(None):
return True
elif valueType == types.FunctionType or valueType == types.MethodType:
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:
return True
elif valueType == unicode:
return True
elif valueType == tuple:
return True
else:
return valueType.__name__