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Created November 12, 2012 05:54
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Getting a Facebook Access Token in python via QWebView + Facebook Javascript SDK
from PySide.QtCore import Slot
from PySide.QtGui import QApplication, QMainWindow, QDialog, QVBoxLayout
from PySide.QtWebKit import QWebView, QWebPage, QWebSettings
import sys
from functools import partial
from argparse import ArgumentParser
ap = ArgumentParser()
ap.add_argument('app_id', type=int)
ns = ap.parse_args()
app = QApplication(sys.argv)
win = QMainWindow()
win.application = app
webview = QWebView(win)
class MyWebPage(QWebPage):
def __init__(self, *args, **kwargs):
QWebPage.__init__(self, *args, **kwargs)
self.mainFrame().addToJavaScriptWindowObject('qpage', self)
def javaScriptConsoleMessage(self, message, lineNumber, sourceID):
print "JS (%s:%d)> %s" % (sourceID, lineNumber, message)
def createWindow(self, type):
view = QWebView(self.parent())
view.show()
view.page().windowCloseRequested.connect(
partial(self.onWindowCloseRequested, view))
return view.page()
print "creating window of type", type
page_win = QDialog(win)
child_view = QWebView(page_win)
layout = QVBoxLayout()
page_win.setLayout(layout)
layout.addWidget(child_view)
page_win.setModal(True)
page_win.show()
return child_view.page()
@Slot(str)
def setAccessToken(self, access_token):
print "GOT ACCESS TOKEN: ", access_token
def onWindowCloseRequested(self, view):
view.hide()
webpage = MyWebPage(webview)
webpage.settings().setAttribute(QWebSettings.JavascriptEnabled, True)
webpage.settings().setAttribute(QWebSettings.JavascriptCanOpenWindows, True)
webview.setPage(webpage)
win.setCentralWidget(webview)
win.show()
html = """
<!DOCTYPE HTML>
<html>
<head>
</head>
<body>
<div id="fb-root" />
<div id="message" />Connecting to Facebook...</div>
<script src="//connect.facebook.net/en_US/all.js"></script>
</body>
</html>
"""
INIT = """
FB.init({
appId : '%s',
status : true, // check the login status upon init?
cookie : false, // set sessions cookies to allow your server to access the session?
xfbml : false // parse XFBML tags on this page?
});
FB.login(function(response) {
if (response.authResponse) {
window.qpage.setAccessToken(response.authResponse.accessToken);
console.log('Welcome! Fetching your information.... ');
FB.api('/me', function(response) {
console.log('Good to see you, ' + response.name + '.');
});
document.getElementById('message').textContent = 'Success!';
} else {
console.log('User cancelled login or did not fully authorize.');
document.getElementById('message').textContent = 'failure!';
}
});
""" % (ns.app_id)
inited = False
def onload(ok):
global inited
if not inited:
inited = True
webpage.mainFrame().evaluateJavaScript(INIT)
webpage.loadFinished.connect(onload)
webpage.mainFrame().setHtml(html, 'http://localhost:50000/')
app.exec_()
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