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cefpython/src/v8context_handler.pyx at cefpython51 · lineCode/cefpython · GitHub
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v8context_handler.pyx
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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)
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