# Copyright (c) 2013 CEF Python, see the Authors file.
# All rights reserved. Licensed under BSD 3-clause license.
# Project website: https://github.com/cztomczak/cefpython

include "cefpython.pyx"
include "browser.pyx"

cdef JavascriptCallback CreateJavascriptCallback(int callbackId,
 CefRefPtr[CefBrowser] cefBrowser, object frameId,
 py_string functionName):
 # frameId is int64
 cdef JavascriptCallback jsCallback = JavascriptCallback()
 jsCallback.callbackId = callbackId
 cdef PyBrowser browser = GetPyBrowser(cefBrowser)
 jsCallback.frame = browser.GetFrameByIdentifier(frameId)
 jsCallback.functionName = functionName
 Debug("Created javascript callback, callbackId=%s, functionName=%s" % \
 (callbackId, functionName))
 return jsCallback

cdef class JavascriptCallback:
 """A javascript callback object may still live while browser/frame
 are destroyed. Always check frame/browser for None value."""
 cdef int callbackId
 cdef PyFrame frame
 cdef py_string functionName

 def Call(self, *args):
 # Send process message "ExecuteJavascriptCallback".
 if self.frame:
 browser = self.frame.GetBrowser()
 if browser:
 browser.SendProcessMessage(
 cef_types.PID_RENDERER,
 self.frame.GetIdentifier(),
 "ExecuteJavascriptCallback",
 [self.callbackId] + list(args))
 else:
 # This code probably ain't needed
 raise Exception("JavascriptCallback.Call() FAILED: browser"
 " not found, callbackId = %s"
 % self.callbackId)
 else:
 # This code probably ain't needed
 raise Exception("JavascriptCallback.Call() FAILED: frame not found"
 ", callbackId = %s" % self.callbackId)

 def GetFunctionName(self):
 return self.functionName

 def GetName(self):
 """@deprecated."""
 return self.GetFunctionName()

 def GetId(self):
 return self.callbackId

 def GetFrame(self):
 return self.frame