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Copy pathpython_callback.pyx
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95 lines (88 loc) · 3.6 KB
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# Copyright (c) 2012-2014 The CEF Python authors. All rights reserved.
# License: New BSD License.
# Website: http://code.google.com/p/cefpython/
include "cefpython.pyx"
cdef int g_pythonCallbackMaxId = 0
cdef dict g_pythonCallbacks = {}
# TODO: send callbackId using CefBinaryNamedValue, see:
# http://www.magpcss.org/ceforum/viewtopic.php?f=6&t=10881
cdef struct PythonCallback:
int callbackId
char uniqueCefBinaryValueSize[16]
cdef CefRefPtr[CefBinaryValue] PutPythonCallback(
object browserId,
object frameId,
object function
) except *:
global g_pythonCallbacks
global g_pythonCallbackMaxId
if not browserId:
raise Exception("PutPythonCallback() FAILED: browserId is empty")
if not frameId:
raise Exception("PutPythonCallback() FAILED: frameId is empty")
cdef PythonCallback pyCallback
g_pythonCallbackMaxId += 1
pyCallback.callbackId = g_pythonCallbackMaxId
cdef CefRefPtr[CefBinaryValue] binaryValue = CefBinaryValue_Create(
&pyCallback, sizeof(pyCallback))
# [0] browserId, [1] frameId, [2] function.
g_pythonCallbacks[g_pythonCallbackMaxId] = (browserId, frameId, function)
return binaryValue
cdef public void RemovePythonCallbacksForFrame(
int frameId
) except * with gil:
# Cannot remove elements from g_pythonCallbacks (dict) while iterating.
cdef list toRemove = []
try:
global g_pythonCallbacks
for callbackId, value in g_pythonCallbacks.iteritems():
if value[1] == frameId:
toRemove.append(callbackId)
for callbackId in toRemove:
del g_pythonCallbacks[callbackId]
Debug("RemovePythonCallbacksForFrame(): " \
"removed python callback, callbackId = %s" \
% callbackId)
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef void RemovePythonCallbacksForBrowser(
int browserId) except *:
cdef list toRemove = []
global g_pythonCallbacks
for callbackId, value in g_pythonCallbacks.iteritems():
if value[0] == browserId:
toRemove.append(callbackId)
for callbackId in toRemove:
del g_pythonCallbacks[callbackId]
Debug("RemovePythonCallbacksForBrowser(): " \
"removed python callback, callbackId = %s" \
% callbackId)
cdef public cpp_bool ExecutePythonCallback(
CefRefPtr[CefBrowser] cefBrowser,
int callbackId,
CefRefPtr[CefListValue] cefFunctionArguments,
) except * with gil:
cdef object function
cdef list functionArguments
cdef object returnValue
try:
global g_pythonCallbacks
if callbackId in g_pythonCallbacks:
# [0] browserId, [1] frameId, [2] function.
function = g_pythonCallbacks[callbackId][2]
functionArguments = CefListValueToPyList(
cefBrowser, cefFunctionArguments)
returnValue = function(*functionArguments)
if returnValue is not None:
Debug("ExecutePythonCallback() WARNING: function returned" \
"value, but returning values to javascript is not " \
"supported, function name = %s" % function.__name__)
return True
else:
Debug("ExecutePythonCallback() FAILED: callback not found, " \
"callbackId = %s" % callbackId)
return False
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)