Simple PyQt JSSelect example

# -*- coding: utf-8 -*-
from basebrowser import *
from PyQt4.QtGui import *
from PyQt4.QtCore import *

class JSSelectList(QAbstractListModel):
    def __init__ (self, _id,  _jsFunc,  parent = None):
        super(JSSelectList, self).__init__(parent)
        self.id = _id
        self.jsFunc = _jsFunc

    def data(self, index, role=Qt.DisplayRole):
        if not index.isValid():
            return QVariant()
        if role == Qt.DisplayRole:
            jsstring = QString("document.getElementById('%1').options[%2].textContent").arg(self.id).arg(index.row())
            jsreturn = self.jsFunc(jsstring)
            return jsreturn.toString().trimmed()

    def rowCount(self, index=QModelIndex()):
        jsstring = QString("document.getElementById('%1').length").arg(self.id)
        jsreturn = self.jsFunc(jsstring)
        ok = False
        count, ok = jsreturn.toInt()
        return count if ok else 0

    def headerData(self, section, orientation, role=Qt.DisplayRole):
        if role != Qt.DisplayRole:
            return QVariant()
        else:
            return self.id

class JSComboBoxDemo(BaseBrowser):
    def __init__(self,  parent = None):
        super(JSComboBoxDemo, self).__init__(parent)
        self.vendorComboBox = QComboBox()
        id = QString("productLine")
        self.vendorListModel = JSSelectList(id, self.webView.page().currentFrame().evaluateJavaScript)
        self.vendorComboBox.setModel(self.vendorListModel)
        self.connect(self.vendorComboBox, SIGNAL("currentIndexChanged(int)"), self.setSelectOnWebPage);
        self.connect(self.webView, SIGNAL("loadFinished(bool)"), self.initComboBox)
        self.layout.addWidget(self.vendorComboBox, 2, 0,  1,  1)
        self.webView.load(QUrl("http://www.amd.com"))


    def setSelectOnWebPage(self, new_id):
        jsstring = QString("document.getElementById('productLine').selectedIndex=%1").arg(new_id)
        self.webView.page().currentFrame().evaluateJavaScript(jsstring)

    def initComboBox(self):
        self.vendorComboBox.setCurrentIndex(0)

if __name__ == "__main__":
    import sys
    app = QApplication(sys.argv)
    ui = JSComboBoxDemo()
    ui.show()
    sys.exit(app.exec_())