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wx webview event
#1
when a webpage loading, it generates event more than once. Google in the code below, has the event fired twice. some webpage has more than 10 times. it is because of multiple frames or something. I want to wait for page fully loaded before continuing rest process. Is there a way to do it? Thanks.

import wx 
import wx.html2 
 
class MyBrowser(wx.Dialog): 
    def __init__(self, *args, **kwds): 
        wx.Dialog.__init__(self, *args, **kwds) 
        sizer = wx.BoxSizer(wx.VERTICAL) 
        self.browser = wx.html2.WebView.New(self)
        self.Bind(wx.html2.EVT_WEBVIEW_LOADED, self.On_Web_View_Loaded, self.browser)
        sizer.Add(self.browser, 1, wx.EXPAND, 10) 
        self.SetSizer(sizer) 
        self.SetSize((700, 700)) 
    def On_Web_View_Loaded(self, event):
        print('Loading')
if __name__ == '__main__': 
    app = wx.App() 
    dialog = MyBrowser(None, -1) 
    dialog.browser.LoadURL("http://www.google.com") 
    dialog.Show() 
    app.MainLoop()
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#2
do you have the demo code loaded?
There is a demo available for wx.html2 WebView that works.

I'll post it here (Requires python 3 and wxpython phoenix).

You need two modules:

run.py
#!/usr/bin/env python

#----------------------------------------------------------------------------
# Name:         run.py
# Purpose:      Simple framework for running individual demos
#
# Author:       Robin Dunn
#
# Created:      6-March-2000
# Copyright:    (c) 2000-2017 by Total Control Software
# Licence:      wxWindows license
#----------------------------------------------------------------------------

"""
This program will load and run one of the individual demos in this
directory within its own frame window.  Just specify the module name
on the command line.
"""

import wx
import wx.lib.inspection
import wx.lib.mixins.inspection
import sys, os

# stuff for debugging
print("Python %s" % sys.version)
print("wx.version: %s" % wx.version())
##print("pid: %s" % os.getpid()); input("Press Enter...")

assertMode = wx.APP_ASSERT_DIALOG
##assertMode = wx.APP_ASSERT_EXCEPTION


#----------------------------------------------------------------------------

class Log:
    def WriteText(self, text):
        if text[-1:] == '\n':
            text = text[:-1]
        wx.LogMessage(text)
    write = WriteText


class RunDemoApp(wx.App, wx.lib.mixins.inspection.InspectionMixin):
    def __init__(self, name, module, useShell):
        self.name = name
        self.demoModule = module
        self.useShell = useShell
        wx.App.__init__(self, redirect=False)


    def OnInit(self):
        wx.Log.SetActiveTarget(wx.LogStderr())

        self.SetAssertMode(assertMode)
        self.InitInspection()  # for the InspectionMixin base class

        frame = wx.Frame(None, -1, "RunDemo: " + self.name, pos=(50,50), size=(200,100),
                        style=wx.DEFAULT_FRAME_STYLE, name="run a sample")
        frame.CreateStatusBar()

        menuBar = wx.MenuBar()
        menu = wx.Menu()
        item = menu.Append(-1, "&Widget Inspector\tF6", "Show the wxPython Widget Inspection Tool")
        self.Bind(wx.EVT_MENU, self.OnWidgetInspector, item)
        item = menu.Append(wx.ID_EXIT, "E&xit\tCtrl-Q", "Exit demo")
        self.Bind(wx.EVT_MENU, self.OnExitApp, item)
        menuBar.Append(menu, "&File")

        ns = {}
        ns['wx'] = wx
        ns['app'] = self
        ns['module'] = self.demoModule
        ns['frame'] = frame

        frame.SetMenuBar(menuBar)
        frame.Show(True)
        frame.Bind(wx.EVT_CLOSE, self.OnCloseFrame)

        win = self.demoModule.runTest(frame, frame, Log())

        # a window will be returned if the demo does not create
        # its own top-level window
        if win:
            # so set the frame to a good size for showing stuff
            frame.SetSize((640, 480))
            win.SetFocus()
            self.window = win
            ns['win'] = win
            frect = frame.GetRect()

        else:
            # It was probably a dialog or something that is already
            # gone, so we're done.
            frame.Destroy()
            return True

        self.SetTopWindow(frame)
        self.frame = frame
        #wx.Log.SetActiveTarget(wx.LogStderr())
        #wx.Log.SetTraceMask(wx.TraceMessages)

        if self.useShell:
            # Make a PyShell window, and position it below our test window
            from wx import py
            shell = py.shell.ShellFrame(None, locals=ns)
            frect.OffsetXY(0, frect.height)
            frect.height = 400
            shell.SetRect(frect)
            shell.Show()

            # Hook the close event of the test window so that we close
            # the shell at the same time
            def CloseShell(evt):
                if shell:
                    shell.Close()
                evt.Skip()
            frame.Bind(wx.EVT_CLOSE, CloseShell)

        return True


    def OnExitApp(self, evt):
        self.frame.Close(True)


    def OnCloseFrame(self, evt):
        if hasattr(self, "window") and hasattr(self.window, "ShutdownDemo"):
            self.window.ShutdownDemo()
        evt.Skip()

    def OnWidgetInspector(self, evt):
        wx.lib.inspection.InspectionTool().Show()


#----------------------------------------------------------------------------


def main(argv):
    useShell = False
    for x in range(len(sys.argv)):
        if sys.argv[x] in ['--shell', '-shell', '-s']:
            useShell = True
            del sys.argv[x]
            break

    if len(argv) < 2:
        print("Please specify a demo module name on the command-line")
        raise SystemExit

    # ensure the CWD is the demo folder
    demoFolder = os.path.realpath(os.path.dirname(__file__))
    os.chdir(demoFolder)

    sys.path.insert(0, os.path.join(demoFolder, 'agw'))
    sys.path.insert(0, '.')

    name, ext  = os.path.splitext(argv[1])
    module = __import__(name)


    app = RunDemoApp(name, module, useShell)
    app.MainLoop()



if __name__ == "__main__":
    main(sys.argv)
and HTML2_WebView.py
#!/usr/bin/env python

import wx
import wx.html2 as webview

#----------------------------------------------------------------------

class TestPanel(wx.Panel):
    def __init__(self, parent, log, frame=None):
        self.log = log
        wx.Panel.__init__(self, parent, -1)

        self.current = "http://google.com/"
        self.frame = frame
        if frame:
            self.titleBase = frame.GetTitle()

        sizer = wx.BoxSizer(wx.VERTICAL)
        btnSizer = wx.BoxSizer(wx.HORIZONTAL)
        self.wv = webview.WebView.New(self)
        self.Bind(webview.EVT_WEBVIEW_NAVIGATING, self.OnWebViewNavigating, self.wv)
        self.Bind(webview.EVT_WEBVIEW_LOADED, self.OnWebViewLoaded, self.wv)


        btn = wx.Button(self, -1, "Open", style=wx.BU_EXACTFIT)
        self.Bind(wx.EVT_BUTTON, self.OnOpenButton, btn)
        btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)

        btn = wx.Button(self, -1, "<--", style=wx.BU_EXACTFIT)
        self.Bind(wx.EVT_BUTTON, self.OnPrevPageButton, btn)
        btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)
        self.Bind(wx.EVT_UPDATE_UI, self.OnCheckCanGoBack, btn)

        btn = wx.Button(self, -1, "-->", style=wx.BU_EXACTFIT)
        self.Bind(wx.EVT_BUTTON, self.OnNextPageButton, btn)
        btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)
        self.Bind(wx.EVT_UPDATE_UI, self.OnCheckCanGoForward, btn)

        btn = wx.Button(self, -1, "Stop", style=wx.BU_EXACTFIT)
        self.Bind(wx.EVT_BUTTON, self.OnStopButton, btn)
        btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)

        btn = wx.Button(self, -1, "Refresh", style=wx.BU_EXACTFIT)
        self.Bind(wx.EVT_BUTTON, self.OnRefreshPageButton, btn)
        btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)

        txt = wx.StaticText(self, -1, "Location:")
        btnSizer.Add(txt, 0, wx.CENTER|wx.ALL, 2)

        self.location = wx.ComboBox(
            self, -1, "", style=wx.CB_DROPDOWN|wx.TE_PROCESS_ENTER)
        self.location.AppendItems(['http://wxPython.org',
                                   'http://wxwidgets.org',
                                   'http://google.com'])
        self.Bind(wx.EVT_COMBOBOX, self.OnLocationSelect, self.location)
        self.location.Bind(wx.EVT_TEXT_ENTER, self.OnLocationEnter)
        btnSizer.Add(self.location, 1, wx.EXPAND|wx.ALL, 2)


        sizer.Add(btnSizer, 0, wx.EXPAND)
        sizer.Add(self.wv, 1, wx.EXPAND)
        self.SetSizer(sizer)

        self.wv.LoadURL(self.current)


    def ShutdownDemo(self):
        # put the frame title back
        if self.frame:
            self.frame.SetTitle(self.titleBase)


    # WebView events
    def OnWebViewNavigating(self, evt):
        # this event happens prior to trying to get a resource
        if evt.GetURL() == 'http://www.microsoft.com/':
            if wx.MessageBox("Are you sure you want to visit Microsoft?",
                             style=wx.YES_NO|wx.ICON_QUESTION) == wx.NO:
                # This is how you can cancel loading a page.
                evt.Veto()

    def OnWebViewLoaded(self, evt):
        # The full document has loaded
        self.current = evt.GetURL()
        self.location.SetValue(self.current)


    # Control bar events
    def OnLocationSelect(self, evt):
        url = self.location.GetStringSelection()
        self.log.write('OnLocationSelect: %s\n' % url)
        self.wv.LoadURL(url)

    def OnLocationEnter(self, evt):
        url = self.location.GetValue()
        self.location.Append(url)
        self.wv.LoadURL(url)


    def OnOpenButton(self, event):
        dlg = wx.TextEntryDialog(self, "Open Location",
                                "Enter a full URL or local path",
                                self.current, wx.OK|wx.CANCEL)
        dlg.CentreOnParent()

        if dlg.ShowModal() == wx.ID_OK:
            self.current = dlg.GetValue()
            self.wv.LoadURL(self.current)

        dlg.Destroy()

    def OnPrevPageButton(self, event):
        self.wv.GoBack()

    def OnNextPageButton(self, event):
        self.wv.GoForward()

    def OnCheckCanGoBack(self, event):
        event.Enable(self.wv.CanGoBack())

    def OnCheckCanGoForward(self, event):
        event.Enable(self.wv.CanGoForward())

    def OnStopButton(self, evt):
        self.wv.Stop()

    def OnRefreshPageButton(self, evt):
        self.wv.Reload()


#----------------------------------------------------------------------

def runTest(frame, nb, log):
    win = TestPanel(nb, log)
    return win

#----------------------------------------------------------------------



overview = """<html><body>
<h2><center>DemoName</center></h2>

Say something nice here

</body></html>
"""



if __name__ == '__main__':
    import sys,os
    import run
    run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
from command prompt:
python HTML2_WebView.py
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