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v8context_handler.pyx
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66 lines (62 loc) · 2.8 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/
# In CEF 3 there is no V8ContextHandler, the methods OnContextCreated(),
# OnContextReleased(), OnUncaughtException() are in CefRenderProcessHandler
# and are called in the Renderer process, we use process messaging to
# recreate these events in the Browser process, but the timing will be
# a bit delayed due to asynchronous way this is being done.
include "cefpython.pyx"
cdef public void V8ContextHandler_OnContextCreated(
CefRefPtr[CefBrowser] cefBrowser,
CefRefPtr[CefFrame] cefFrame
) except * with gil:
cdef PyBrowser pyBrowser
cdef PyFrame pyFrame
cdef object clientCallback
try:
Debug("V8ContextHandler_OnContextCreated()")
pyBrowser = GetPyBrowser(cefBrowser)
pyBrowser.SetUserData("__v8ContextCreated", True)
pyFrame = GetPyFrame(cefFrame)
# User defined callback.
clientCallback = pyBrowser.GetClientCallback("OnContextCreated")
if clientCallback:
clientCallback(pyBrowser, pyFrame)
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public void V8ContextHandler_OnContextReleased(
int browserId,
int64 frameId
) except * with gil:
cdef PyBrowser pyBrowser
cdef PyFrame pyFrame
cdef object clientCallback
try:
# Due to multi-process architecture in CEF 3, this function won't
# get called for the main frame in main browser. To send a message
# from the renderer process a parent browser is used. If this was
# a main frame then this would mean that the browser is being
# destroyed, thus we can't send a process message using this browser.
# There is no guarantee that this will get called for frames in the
# main browser, if the browser is destroyed shortly after the frames
# were released.
Debug("V8ContextHandler_OnContextReleased()")
pyBrowser = GetPyBrowserById(browserId)
pyFrame = GetPyFrameById(browserId, frameId)
if pyBrowser and pyFrame:
clientCallback = pyBrowser.GetClientCallback("OnContextReleased")
if clientCallback:
clientCallback(pyBrowser, pyFrame)
else:
if not pyBrowser:
Debug("V8ContextHandler_OnContextReleased() WARNING: "
"pyBrowser not found")
if not pyFrame:
Debug("V8ContextHandler_OnContextReleased() WARNING: "
"pyFrame not found")
RemovePyFrame(browserId, frameId)
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)