[PyQt] QWebPage don't execute javascript anymore

Thu May 25 13:39:31 BST 2017

Hi,

Is it a change known into QWebPage with javascript content ?

The code below don't work (the map is not displayed) since my last 
update to
Qt-5.5.1O and PyQt-5.5.1

Note: I can't change my code for QtWebEngineView.QWebEnginePage because
QtWebEngineView is not provided for Debian/Ubuntu.

mapviewer.py
---------------------------------------------------------
import sys
from PyQt5.QtCore import pyqtSignal, QUrl, Qt
from PyQt5.QtWebKit import QWebSettings
from PyQt5.QtWebKitWidgets import QWebView, QWebPage
from PyQt5.QtWidgets import QApplication

class MapViewer(QWebView):
     coordinateChanged = pyqtSignal(list)
     def __init__(self, parent=None):
         super().__init__(parent)
         self.page_ = QWebPage()
         self.setPage(self.page_)
         self.loadFinished.connect(self.on_load_finished)
         url = QUrl.fromLocalFile('/NEED/FULL/PATH/ol.html')
         self.setUrl(url)

     def go_to(self, lat, lon):
         self.page_.mainFrame().evaluateJavaScript(
                 'centerOnLatLon({0}, {1}, {2});'.format(lat, lon, 16))
         self.on_load_finished()

     def on_load_finished(self):
         evl = 
self.page_.mainFrame().evaluateJavaScript("updateLatLonFields();")
         print("Map loaded at coord:", evl)

if __name__ == '__main__':
     app = QApplication([])
     mv = MapViewer()
     mv.show()
     mv.go_to(50.19345, 3.479976)
     sys.exit(app.exec_())
------------------------------------------------------------

And the basic OpenLayer html (same problem with GoogleMap)

ol.html
------------------------------------------------------------
<!DOCTYPE html>
<html>
   <head>
     <title>Accessible Map</title>
     <link rel="stylesheet" 
href="https://openlayers.org/en/v4.1.1/css/ol.css" type="text/css">
     <script src="https://openlayers.org/en/v4.1.1/build/ol.js"></script>
   </head>
   <body>
     <a class="skiplink" href="#map">Go to map</a>
     <div id="map" class="map" tabindex="0"></div>
     <button id="zoom-out">Zoom out</button>
     <button id="zoom-in">Zoom in</button>
     <script>
       var map = new ol.Map({
         layers: [
           new ol.layer.Tile({
             source: new ol.source.OSM()
           })
         ],
         target: 'map',
         controls: ol.control.defaults({
           attributionOptions: /** @type 
{olx.control.AttributionOptions} */ ({
             collapsible: false
           })
         }),
         view: new ol.View({
           center: ol.proj.fromLonLat([5.5, 50.5]),
           zoom: 10
         })
       });

       document.getElementById('zoom-out').onclick = function() {
         var view = map.getView();
         var zoom = view.getZoom();
         view.setZoom(zoom - 1);
       };

       document.getElementById('zoom-in').onclick = function() {
         var view = map.getView();
         var zoom = view.getZoom();
         view.setZoom(zoom + 1);
       };

       function updateLatLonFields() {
         var view = map.getView();
         var center = view.getCenter();
         var lonLat = ol.proj.toLonLat(center);
         var zoom = view.getZoom();
         var values = [lonLat[0], lonLat[1], zoom];
         return (values);
       };

       function centerOnLatLon(lat, lon, zoom) {
         var x = parseFloat(lon);
         var y = parseFloat(lat);
         var centerAt = [x, y];
         var newPos = ol.proj.fromLonLat(centerAt);
         var view = map.getView();
         view.setCenter(newPos);
         view.setZoom(zoom);
       };
     </script>
   </body>
</html>
------------------------------------------------------------------

Vincent