cefpython/src/frame.pyx at cefpython49-winxp · pythonthings/cefpython · GitHub

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# Project website: https://github.com/cztomczak/cefpython

include "cefpython.pyx"

include "browser.pyx"

cdef dict g_pyFrames = {}

cdef object GetUniqueFrameId(int browserId, object frameId):

return str(browserId) +"#"+ str(frameId)

cdef PyFrame GetPyFrameById(int browserId, object frameId):

cdef object uniqueFrameId = GetUniqueFrameId(browserId, frameId)

if uniqueFrameId in g_pyFrames:

return g_pyFrames[uniqueFrameId]

return None

cdef PyFrame GetPyFrame(CefRefPtr[CefFrame] cefFrame):

global g_pyFrames

if <void*>cefFrame == NULL or not cefFrame.get():

raise Exception("GetPyFrame(): CefFrame reference is NULL")

cdef PyFrame pyFrame

cdef object frameId = cefFrame.get().GetIdentifier() # int64

cdef int browserId = cefFrame.get().GetBrowser().get().GetIdentifier()

assert (frameId and browserId), "frameId or browserId empty"

cdef object uniqueFrameId = GetUniqueFrameId(browserId, frameId)

if uniqueFrameId in g_pyFrames:

return g_pyFrames[uniqueFrameId]

# This code probably ain't needed.

# ----

cdef list toRemove = []

for uFid, pyFrame in g_pyFrames.items():

if not pyFrame.cefFrame.get():

toRemove.append(uFid)

for uFid in toRemove:

Debug("GetPyFrame(): removing an empty CefFrame reference, "

"uniqueFrameId = %s" % uniqueFrameId)

del g_pyFrames[uFid]

# ----

pyFrame = PyFrame(browserId, frameId)

pyFrame.cefFrame = cefFrame

if browserId in g_unreferenced_browsers:

# Browser was already globally unreferenced in OnBeforeClose,

# thus all frames are globally unreferenced too. Create a new

# incomplete instance of PyFrame object. Read comments in

# browser.pyx > GetPyBrowser and in Browser.md for what

# "incomplete" means.

pass

else:

# Keep a global reference to this frame only if the browser

# wasn't destroyed in OnBeforeClose. Otherwise we would leave

# dead frames references living forever.

# SIDE EFFECT: two calls to GetPyFrame for the same frame object

# may return two different PyFrame objects. Compare

# frame objects always using GetIdentifier().

# Debug("GetPyFrame(): create new PyFrame, frameId=%s" % frameId)

g_pyFrames[uniqueFrameId] = pyFrame

return pyFrame

cdef void RemovePyFrame(int browserId, object frameId) except *:

# Called from V8ContextHandler_OnContextReleased().

global g_pyFrames

cdef object uniqueFrameId = GetUniqueFrameId(browserId, frameId)

if uniqueFrameId in g_pyFrames:

Debug("del g_pyFrames[%s]" % uniqueFrameId)

del g_pyFrames[uniqueFrameId]

else:

Debug("RemovePyFrame() FAILED: uniqueFrameId = %s" % uniqueFrameId)

cdef void RemovePyFramesForBrowser(int browserId) except *:

# Called from LifespanHandler_BeforeClose().

cdef list toRemove = []

cdef object uniqueFrameId

cdef PyFrame pyFrame

global g_pyFrames

for uniqueFrameId, pyFrame in g_pyFrames.iteritems():

if pyFrame.GetBrowserIdentifier() == browserId:

toRemove.append(uniqueFrameId)

for uniqueFrameId in toRemove:

Debug("del g_pyFrames[%s]" % uniqueFrameId)

del g_pyFrames[uniqueFrameId]

cdef class PyFrame:

cdef CefRefPtr[CefFrame] cefFrame

cdef int browserId

cdef object frameId

cdef CefRefPtr[CefFrame] GetCefFrame(self) except *:

# Do not call IsValid() here, if the frame does not exist

# then no big deal, no reason to crash the application.

# The CEF calls will fail, but they also won't cause crash.

if <void*>self.cefFrame != NULL and self.cefFrame.get():

return self.cefFrame

raise Exception("PyFrame.GetCefFrame() failed: CefFrame was destroyed")

def __init__(self, int browserId, int frameId):

self.browserId = browserId

self.frameId = frameId

cpdef py_bool IsValid(self):

if <void*>self.cefFrame != NULL and self.cefFrame.get() \

and self.cefFrame.get().IsValid():

return True

return False

def CallFunction(self, *args):

# DEPRECATED - keep for backwards compatibility.

self.ExecuteFunction(*args)

cpdef py_void Copy(self):

self.GetCefFrame().get().Copy()

cpdef py_void Cut(self):

self.GetCefFrame().get().Cut()

cpdef py_void Delete(self):

self.GetCefFrame().get().Delete()

def ExecuteFunction(self, funcName, *args):

# No need to enter V8 context as we're calling javascript

# asynchronously using ExecuteJavascript() function.

code = funcName+"("

for i in range(0, len(args)):

if i != 0:

code += ", "

code += json.dumps(args[i])

code += ")"

self.ExecuteJavascript(code)

cpdef py_void ExecuteJavascript(self, py_string jsCode,

py_string scriptUrl="", int startLine=1):

self.GetCefFrame().get().ExecuteJavaScript(PyToCefStringValue(jsCode),

PyToCefStringValue(scriptUrl), startLine)

cpdef object GetIdentifier(self):

# It is better to save browser and frame identifiers during

# browser instantiation. When freeing PyBrowser and PyFrame

# we need these identifiers. CefFrame and CefBrowser may already

# be freed and calling methods on these objects may fail, this

# may or may not include GetIdentifier() method, but let's be sure.

return self.frameId

cpdef PyFrame GetParent(self):

return GetPyFrame(self.GetCefFrame().get().GetParent())

cpdef PyBrowser GetBrowser(self):

return GetPyBrowser(self.GetCefFrame().get().GetBrowser())

cpdef int GetBrowserIdentifier(self) except *:

return self.browserId

cpdef str GetName(self):

return CefToPyString(self.GetCefFrame().get().GetName())

cpdef py_void GetSource(self, object visitor):

self.GetCefFrame().get().GetSource(CreateStringVisitor(visitor))

cpdef py_void GetText(self, object visitor):

self.GetCefFrame().get().GetText(CreateStringVisitor(visitor))

cpdef str GetUrl(self):

return CefToPyString(self.GetCefFrame().get().GetURL())

cpdef py_bool IsFocused(self):

return self.GetCefFrame().get().IsFocused()

cpdef py_bool IsMain(self):

return self.GetCefFrame().get().IsMain()

cpdef py_void LoadString(self, py_string value, py_string url):

cdef CefString cefValue

cdef CefString cefUrl

PyToCefString(value, cefValue)

PyToCefString(url, cefUrl)

self.GetCefFrame().get().LoadString(cefValue, cefUrl)

cpdef py_void LoadUrl(self, py_string url):

url = GetNavigateUrl(url)

cdef CefString cefUrl

PyToCefString(url, cefUrl)

self.GetCefFrame().get().LoadURL(cefUrl)

cpdef py_void Paste(self):

self.GetCefFrame().get().Paste()

cpdef py_void Redo(self):

self.GetCefFrame().get().Redo()

cpdef py_void SelectAll(self):

self.GetCefFrame().get().SelectAll()

cpdef py_void Undo(self):

self.GetCefFrame().get().Undo()

cpdef py_void ViewSource(self):

self.GetCefFrame().get().ViewSource()

cefpython/src/frame.pyx at cefpython49-winxp · pythonthings/cefpython · GitHub

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