I want to make a function in PyQt evaluateJavaScript() (or may be similar one) and than display a result of evaluated function. Real function will be much bigger, and it might not be a string.
I'm only interesting in how to create a function inside PyQt code and than get the result into python variable.
To be more clear I will give you an example:
that's the js that I want to type in after loadFinished on :
w = document.getElementsByTagName('p')[0];
w.innerHTML
If I do it in browser console, I' will get an output:
"jQuery is a fast and concise JavaScript Library ...... blah blah blah"
And I want to store this output in a variable.
#!/usr/bin/env python
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import *
import os, sys, signal
from urllib2 import urlopen
class GBot(QWebView):
def __init__(self):
QWebView.__init__(self)
self.setPage(BrowserSettings())
#self.jquery = get_jquery()
self.load(QUrl(''))
self.frame = self.page().currentFrame()
def _loadFinished(self, ok):
doc = self.frame.documentElement()
#doc.evaluateJavaScript(self.jquery)
r = doc.evaluateJavaScript('''w = document.getElementsByTagName('p')[0]; w.innerHTML''')
print r #want to do something like this
if __name__ == '__main__':
app = QApplication(sys.argv)
bot = GBot()
bot.show()
if signal.signal(signal.SIGINT, signal.SIG_DFL):
sys.exit(app.exec_())
app.exec_()
I want to make a function in PyQt evaluateJavaScript() (or may be similar one) and than display a result of evaluated function. Real function will be much bigger, and it might not be a string.
I'm only interesting in how to create a function inside PyQt code and than get the result into python variable.
To be more clear I will give you an example:
that's the js that I want to type in after loadFinished on http://jquery.:
w = document.getElementsByTagName('p')[0];
w.innerHTML
If I do it in browser console, I' will get an output:
"jQuery is a fast and concise JavaScript Library ...... blah blah blah"
And I want to store this output in a variable.
#!/usr/bin/env python
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import *
import os, sys, signal
from urllib2 import urlopen
class GBot(QWebView):
def __init__(self):
QWebView.__init__(self)
self.setPage(BrowserSettings())
#self.jquery = get_jquery()
self.load(QUrl('http://jquery.'))
self.frame = self.page().currentFrame()
def _loadFinished(self, ok):
doc = self.frame.documentElement()
#doc.evaluateJavaScript(self.jquery)
r = doc.evaluateJavaScript('''w = document.getElementsByTagName('p')[0]; w.innerHTML''')
print r #want to do something like this
if __name__ == '__main__':
app = QApplication(sys.argv)
bot = GBot()
bot.show()
if signal.signal(signal.SIGINT, signal.SIG_DFL):
sys.exit(app.exec_())
app.exec_()
- by passing it as a get or post parameter – Ibu Commented Jan 8, 2013 at 4:24
- can you give me an example? – Vor Commented Jan 8, 2013 at 4:24
-
1
Proper JQuery:
w = $('p').children().eq(0).html();– Mr. Polywhirl Commented Jan 8, 2013 at 4:27
1 Answer
Reset to default 7In this example first I create a myWindow javascript object by passing self to the main frame, then call evaluateJavaScript when loadFinished:
#!/usr/bin/env python
#-*- coding:utf-8 -*-
from PyQt4 import QtCore, QtGui, QtWebKit
getJsValue = """
w = document.getElementsByTagName('p')[0];
myWindow.showMessage(w.innerHTML);
"""
class myWindow(QtWebKit.QWebView):
def __init__(self, parent=None):
super(myWindow, self).__init__(parent)
self.page().mainFrame().addToJavaScriptWindowObject("myWindow", self)
self.loadFinished.connect(self.on_loadFinished)
self.load(QtCore.QUrl('http://jquery.'))
@QtCore.pyqtSlot(str)
def showMessage(self, message):
print "Message from website:", message
@QtCore.pyqtSlot()
def on_loadFinished(self):
self.page().mainFrame().evaluateJavaScript(getJsValue)
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
app.setApplicationName('myWindow')
main = myWindow()
main.show()
sys.exit(app.exec_())