mirror of
https://github.com/wxWidgets/Phoenix.git
synced 2025-12-16 01:30:07 +01:00
Show how to use the MemoryFSHandler and a custom WebViewHandler
This commit is contained in:
Robin Dunn
@@ -1,161 +0,0 @@
|
||||
import sys
|
||||
import wx
|
||||
import wx.html2 as webview
|
||||
|
||||
#----------------------------------------------------------------------
|
||||
|
||||
class TestPanel(wx.Panel):
|
||||
def __init__(self, parent):
|
||||
wx.Panel.__init__(self, parent)
|
||||
|
||||
self.current = "http://wxPython.org"
|
||||
self.frame = self.GetTopLevelParent()
|
||||
self.titleBase = self.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_NAVIGATED, self.OnWebViewNavigated, self.wv)
|
||||
self.Bind(webview.EVT_WEBVIEW_LOADED, self.OnWebViewLoaded, self.wv)
|
||||
self.Bind(webview.EVT_WEBVIEW_TITLE_CHANGED, self.OnWebViewTitleChanged, 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'])
|
||||
|
||||
#for url in ['http://wxPython.org',
|
||||
# 'http://wxwidgets.org',
|
||||
# 'http://google.com']:
|
||||
# item = webview.WebViewHistoryItem(url, url)
|
||||
# self.wv.LoadHistoryItem(item)
|
||||
|
||||
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)
|
||||
|
||||
|
||||
|
||||
# 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 OnWebViewNavigated(self, evt):
|
||||
self.frame.SetStatusText("Loading %s..." % evt.GetURL())
|
||||
|
||||
|
||||
def OnWebViewLoaded(self, evt):
|
||||
# The full document has loaded
|
||||
self.current = evt.GetURL()
|
||||
self.location.SetValue(self.current)
|
||||
self.frame.SetStatusText("Loaded")
|
||||
|
||||
|
||||
def OnWebViewTitleChanged(self, evt):
|
||||
# Set the frame's title to include the document's title
|
||||
self.frame.SetTitle("%s -- %s" % (self.titleBase, evt.GetString()))
|
||||
|
||||
|
||||
# Control bar events
|
||||
def OnLocationSelect(self, evt):
|
||||
url = self.location.GetStringSelection()
|
||||
print('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):
|
||||
for i in self.wv.GetBackwardHistory():
|
||||
print("%s %s" % (i.Url, i.Title))
|
||||
self.wv.GoBack()
|
||||
|
||||
def OnNextPageButton(self, event):
|
||||
for i in self.wv.GetForwardHistory():
|
||||
print("%s %s" % (i.Url, i.Title))
|
||||
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 main():
|
||||
app = wx.App()
|
||||
frm = wx.Frame(None, title="html2.WebView sample", size=(700,500))
|
||||
frm.CreateStatusBar()
|
||||
pnl = TestPanel(frm)
|
||||
frm.Show()
|
||||
app.MainLoop()
|
||||
|
||||
|
||||
#----------------------------------------------------------------------
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
BIN
samples/html2/logo.png
Normal file
BIN
samples/html2/logo.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 24 KiB |
29
samples/html2/webview_sample.html
Normal file
29
samples/html2/webview_sample.html
Normal file
@@ -0,0 +1,29 @@
|
||||
<html>
|
||||
<head>
|
||||
<title>Home</title>
|
||||
</head>
|
||||
<body>
|
||||
<h1>html2.WebView Sample</h1>
|
||||
<p>This is a super simple launch page for the html2.WebView sample.</p>
|
||||
|
||||
<br>
|
||||
<p>Normal web pages and real web sites work just as expected:
|
||||
<ul>
|
||||
<li><a href="https://wxPython.org/">wxPython Home</a></li>
|
||||
<li><a href="https://wxWidgets.org/">wxWidgets Home</a></li>
|
||||
<li><a href="https://www.microsoft.com/">Microsoft Home</a></li>
|
||||
<li><a href="http://google.com">Google Home</a></li>
|
||||
</ul>
|
||||
</p>
|
||||
|
||||
<br>
|
||||
<p>
|
||||
Resources can also be loaded from custom file systems:
|
||||
<ul>
|
||||
<li><a href="memory:page1.htm">wx.MemoryFSHandler</a></li>
|
||||
<li>Custom <a href="custom:page1.html">wx.html2.WebViewHandler</a></li>
|
||||
</ul>
|
||||
</p>
|
||||
<p></p>
|
||||
</body>
|
||||
</html>
|
||||
251
samples/html2/webview_sample.py
Normal file
251
samples/html2/webview_sample.py
Normal file
@@ -0,0 +1,251 @@
|
||||
import sys
|
||||
import os
|
||||
from six import BytesIO
|
||||
|
||||
import wx
|
||||
import wx.html2 as webview
|
||||
|
||||
HERE = os.path.abspath(os.path.dirname(__file__))
|
||||
BASE = 'file://{}/'.format(HERE.replace('\\', '/'))
|
||||
URL = BASE + 'webview_sample.html'
|
||||
LOGO = os.path.join(HERE, 'logo.png')
|
||||
|
||||
#print(wx.version())
|
||||
|
||||
#--------------------------------------------------------------------------
|
||||
|
||||
class SampleFrame(wx.Frame):
|
||||
def __init__(self, parent, url=URL):
|
||||
wx.Frame.__init__(self, parent, title="html2.WebView Sample", size=(800,900))
|
||||
# add a statusbar
|
||||
self.CreateStatusBar()
|
||||
|
||||
# Add a menubar with just a quit item
|
||||
mb = wx.MenuBar()
|
||||
menu = wx.Menu()
|
||||
menu.Append(wx.ID_EXIT, '&Quit')
|
||||
mb.Append(menu, "File")
|
||||
self.SetMenuBar(mb)
|
||||
self.Bind(wx.EVT_MENU, self.OnQuit, id=wx.ID_EXIT)
|
||||
|
||||
# Create the main panel
|
||||
pnl = WebViewPanel(self, url)
|
||||
|
||||
# Menu event handler to close the frame
|
||||
def OnQuit(self, evt):
|
||||
self.Close(force=True)
|
||||
|
||||
#--------------------------------------------------------------------------
|
||||
|
||||
class WebViewPanel(wx.Panel):
|
||||
def __init__(self, parent, url):
|
||||
wx.Panel.__init__(self, parent)
|
||||
|
||||
self.current = url
|
||||
self.frame = self.GetTopLevelParent()
|
||||
self.titleBase = self.frame.GetTitle()
|
||||
|
||||
sizer = wx.BoxSizer(wx.VERTICAL)
|
||||
btnSizer = wx.BoxSizer(wx.HORIZONTAL)
|
||||
self.wv = webview.WebView.New(self)
|
||||
|
||||
# Register a handler for the memory: file system
|
||||
self.wv.RegisterHandler(webview.WebViewFSHandler("memory"))
|
||||
|
||||
# And also one for the custom: file system implemented by the
|
||||
# CustomWebViewHandler class below
|
||||
self.wv.RegisterHandler(CustomWebViewHandler())
|
||||
|
||||
self.Bind(webview.EVT_WEBVIEW_NAVIGATING, self.OnWebViewNavigating, self.wv)
|
||||
self.Bind(webview.EVT_WEBVIEW_NAVIGATED, self.OnWebViewNavigated, self.wv)
|
||||
self.Bind(webview.EVT_WEBVIEW_LOADED, self.OnWebViewLoaded, self.wv)
|
||||
self.Bind(webview.EVT_WEBVIEW_TITLE_CHANGED, self.OnWebViewTitleChanged, 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)
|
||||
|
||||
|
||||
# WebView events
|
||||
def OnWebViewNavigating(self, evt):
|
||||
# this event happens prior to trying to get a resource
|
||||
if evt.GetURL() == 'https://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 OnWebViewNavigated(self, evt):
|
||||
self.frame.SetStatusText("Loading %s..." % evt.GetURL())
|
||||
|
||||
|
||||
def OnWebViewLoaded(self, evt):
|
||||
# The full document has loaded
|
||||
self.current = evt.GetURL()
|
||||
self.location.SetValue(self.current)
|
||||
self.frame.SetStatusText("Loaded")
|
||||
|
||||
|
||||
def OnWebViewTitleChanged(self, evt):
|
||||
# Set the frame's title to include the document's title
|
||||
self.frame.SetTitle("%s -- %s" % (self.titleBase, evt.GetString()))
|
||||
|
||||
|
||||
# Control bar events
|
||||
def OnLocationSelect(self, evt):
|
||||
url = self.location.GetStringSelection()
|
||||
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):
|
||||
#for i in self.wv.GetBackwardHistory():
|
||||
# print("%s %s" % (i.Url, i.Title))
|
||||
self.wv.GoBack()
|
||||
|
||||
def OnNextPageButton(self, event):
|
||||
#for i in self.wv.GetForwardHistory():
|
||||
# print("%s %s" % (i.Url, i.Title))
|
||||
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 SetupMemoryFiles():
|
||||
# Set up an in-memory file system with virtual "files" that can be
|
||||
# loaded into the webview just like network or local file sources.
|
||||
# These "files" can be access using a protocol specifier of "memory:"
|
||||
wx.FileSystem.AddHandler(wx.MemoryFSHandler())
|
||||
wx.MemoryFSHandler.AddFile(
|
||||
"page1.htm",
|
||||
"<html><head><title>File System Example</title>"
|
||||
"<link rel='stylesheet' type='text/css' href='memory:test.css'>"
|
||||
"</head><body><h1>Page 1</h1>"
|
||||
"<p><img src='memory:logo.png'></p>"
|
||||
"<p>This file was loaded directly from a virtual in-memory filesystem.</p>"
|
||||
"<p>Here's another page: <a href='memory:page2.htm'>Page 2</a>.</p></body>")
|
||||
wx.MemoryFSHandler.AddFile(
|
||||
"page2.htm",
|
||||
"<html><head><title>File System Example</title>"
|
||||
"<link rel='stylesheet' type='text/css' href='memory:test.css'>"
|
||||
"</head><body><h1>Page 2</h1>"
|
||||
"<p><a href='memory:page1.htm'>Page 1</a> was better.</p></body>")
|
||||
wx.MemoryFSHandler.AddFile(
|
||||
"test.css",
|
||||
"h1 {color: red;}")
|
||||
wx.MemoryFSHandler.AddFile('logo.png', wx.Bitmap(LOGO), wx.BITMAP_TYPE_PNG)
|
||||
|
||||
#--------------------------------------------------------------------------
|
||||
|
||||
class CustomWebViewHandler(webview.WebViewHandler):
|
||||
# This shows how to make a custom handler for providing content to the
|
||||
# WebView for a specific scheme ("custom:" in this case). This handler
|
||||
# class simply needs to implement the GetFile method, which will be called
|
||||
# whenever a resource with a matching scheme is to be loaded, and it needs
|
||||
# to respond by returning a wx.FSFile object. This means that, unlike the
|
||||
# wx.MemoryFSHandler, content can be generated on the fly rather than
|
||||
# needing to be preloaded into a filesystem.
|
||||
#
|
||||
|
||||
def __init__(self):
|
||||
wx.html2.WebViewHandler.__init__(self, 'custom')
|
||||
self.count = 0
|
||||
|
||||
def GetFile(self, uri):
|
||||
# We'll just provide the same content for every URI in this example, but
|
||||
# normally you would generate or fetch appropriate content that is
|
||||
# referenced by the given URI.
|
||||
self.count += 1
|
||||
content = """\
|
||||
<html><head><title>Custom Handler Example</title></head>
|
||||
<body><h1>Custom Handler Example</h1>
|
||||
<p>This page is provided dynamically from the CustomWebViewHandler class.</p>
|
||||
<p>It has been loaded {} times.</p>
|
||||
</body></html>""".format(self.count)
|
||||
stream = BytesIO(content.encode('utf-8'))
|
||||
fsfile = wx.FSFile(stream, uri, 'page1.html', 'text/html', wx.DateTime.Now())
|
||||
return fsfile
|
||||
|
||||
#--------------------------------------------------------------------------
|
||||
|
||||
def main():
|
||||
app = wx.App()
|
||||
SetupMemoryFiles()
|
||||
frm = SampleFrame(None)
|
||||
frm.Show()
|
||||
app.MainLoop()
|
||||
|
||||
|
||||
#--------------------------------------------------------------------------
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
Reference in New Issue
Block a user