mirror of
https://github.com/wxWidgets/Phoenix.git
synced 2025-07-21 20:51:09 +02:00
264 lines
9.4 KiB
Python
264 lines
9.4 KiB
Python
import sys
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import os
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from io import BytesIO
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import wx
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import wx.html2 as webview
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HERE = os.path.abspath(os.path.dirname(__file__))
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BASE = 'file://{}/'.format(HERE.replace('\\', '/'))
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URL = BASE + 'webview_sample.html'
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LOGO = os.path.join(HERE, 'logo.png')
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# We need to be in the HERE folder for the archive link to work since the sample
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# page does not use a full path
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os.chdir(HERE)
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#--------------------------------------------------------------------------
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class SampleFrame(wx.Frame):
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def __init__(self, parent, url=URL):
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wx.Frame.__init__(self, parent, title="html2.WebView Sample", size=(800,900))
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# add a statusbar
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self.CreateStatusBar()
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# Add a menubar with just a quit item
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mb = wx.MenuBar()
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menu = wx.Menu()
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menu.Append(wx.ID_EXIT, '&Quit')
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mb.Append(menu, "File")
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self.SetMenuBar(mb)
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self.Bind(wx.EVT_MENU, self.OnQuit, id=wx.ID_EXIT)
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# Create the main panel
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pnl = WebViewPanel(self, url)
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# Menu event handler to close the frame
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def OnQuit(self, evt):
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self.Close(force=True)
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#--------------------------------------------------------------------------
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class WebViewPanel(wx.Panel):
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def __init__(self, parent, url):
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wx.Panel.__init__(self, parent)
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self.current = url
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self.frame = self.GetTopLevelParent()
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self.titleBase = self.frame.GetTitle()
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sizer = wx.BoxSizer(wx.VERTICAL)
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btnSizer = wx.BoxSizer(wx.HORIZONTAL)
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# Ensure that a newer version of the IE/Edge control will be used
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# on Windows
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webview.WebView.MSWSetEmulationLevel()
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# Create the webView control
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self.wv = webview.WebView.New(self)
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# Register a handler for the memory: file system
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self.wv.RegisterHandler(webview.WebViewFSHandler("memory"))
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# This handler takes care of links that are in zip files
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self.wv.RegisterHandler(webview.WebViewArchiveHandler("wxzip"))
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# And this one is for the custom: file system implemented by the
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# CustomWebViewHandler class below
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self.wv.RegisterHandler(CustomWebViewHandler())
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self.Bind(webview.EVT_WEBVIEW_NAVIGATING, self.OnWebViewNavigating, self.wv)
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self.Bind(webview.EVT_WEBVIEW_NAVIGATED, self.OnWebViewNavigated, self.wv)
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self.Bind(webview.EVT_WEBVIEW_LOADED, self.OnWebViewLoaded, self.wv)
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self.Bind(webview.EVT_WEBVIEW_TITLE_CHANGED, self.OnWebViewTitleChanged, self.wv)
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btn = wx.Button(self, -1, "Open", style=wx.BU_EXACTFIT)
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self.Bind(wx.EVT_BUTTON, self.OnOpenButton, btn)
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btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)
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btn = wx.Button(self, -1, "◀︎", style=wx.BU_EXACTFIT)
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self.Bind(wx.EVT_BUTTON, self.OnPrevPageButton, btn)
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btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)
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self.Bind(wx.EVT_UPDATE_UI, self.OnCheckCanGoBack, btn)
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btn = wx.Button(self, -1, "▶︎", style=wx.BU_EXACTFIT)
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self.Bind(wx.EVT_BUTTON, self.OnNextPageButton, btn)
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btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)
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self.Bind(wx.EVT_UPDATE_UI, self.OnCheckCanGoForward, btn)
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btn = wx.Button(self, -1, "Stop", style=wx.BU_EXACTFIT)
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self.Bind(wx.EVT_BUTTON, self.OnStopButton, btn)
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btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)
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btn = wx.Button(self, -1, "Refresh", style=wx.BU_EXACTFIT)
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self.Bind(wx.EVT_BUTTON, self.OnRefreshPageButton, btn)
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btnSizer.Add(btn, 0, wx.EXPAND|wx.ALL, 2)
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txt = wx.StaticText(self, -1, "Location:")
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btnSizer.Add(txt, 0, wx.CENTER|wx.ALL, 2)
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self.location = wx.ComboBox(
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self, -1, "", style=wx.CB_DROPDOWN|wx.TE_PROCESS_ENTER)
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self.location.AppendItems(['http://wxPython.org',
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'http://wxwidgets.org',
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'http://google.com'])
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self.Bind(wx.EVT_COMBOBOX, self.OnLocationSelect, self.location)
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self.location.Bind(wx.EVT_TEXT_ENTER, self.OnLocationEnter)
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btnSizer.Add(self.location, 1, wx.EXPAND|wx.ALL, 2)
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sizer.Add(btnSizer, 0, wx.EXPAND)
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sizer.Add(self.wv, 1, wx.EXPAND)
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self.SetSizer(sizer)
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self.wv.LoadURL(self.current)
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# WebView events
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def OnWebViewNavigating(self, evt):
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# this event happens prior to trying to get a resource
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if evt.GetURL() == 'https://www.microsoft.com/':
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if wx.MessageBox("Are you sure you want to visit Microsoft?",
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style=wx.YES_NO|wx.ICON_QUESTION) == wx.NO:
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# This is how you can cancel loading a page.
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evt.Veto()
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def OnWebViewNavigated(self, evt):
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self.frame.SetStatusText("Loading %s..." % evt.GetURL())
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def OnWebViewLoaded(self, evt):
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# The full document has loaded
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self.current = evt.GetURL()
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self.location.SetValue(self.current)
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self.frame.SetStatusText("Loaded")
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def OnWebViewTitleChanged(self, evt):
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# Set the frame's title to include the document's title
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self.frame.SetTitle("%s -- %s" % (self.titleBase, evt.GetString()))
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# Control bar events
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def OnLocationSelect(self, evt):
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url = self.location.GetStringSelection()
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self.wv.LoadURL(url)
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def OnLocationEnter(self, evt):
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url = self.location.GetValue()
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self.location.Append(url)
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self.wv.LoadURL(url)
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def OnOpenButton(self, event):
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dlg = wx.TextEntryDialog(self, "Open Location",
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"Enter a full URL or local path",
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self.current, wx.OK|wx.CANCEL)
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dlg.CentreOnParent()
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if dlg.ShowModal() == wx.ID_OK:
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self.current = dlg.GetValue()
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self.wv.LoadURL(self.current)
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dlg.Destroy()
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def OnPrevPageButton(self, event):
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#for i in self.wv.GetBackwardHistory():
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# print("%s %s" % (i.Url, i.Title))
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self.wv.GoBack()
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def OnNextPageButton(self, event):
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#for i in self.wv.GetForwardHistory():
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# print("%s %s" % (i.Url, i.Title))
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self.wv.GoForward()
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def OnCheckCanGoBack(self, event):
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event.Enable(self.wv.CanGoBack())
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def OnCheckCanGoForward(self, event):
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event.Enable(self.wv.CanGoForward())
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def OnStopButton(self, evt):
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self.wv.Stop()
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def OnRefreshPageButton(self, evt):
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self.wv.Reload()
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#--------------------------------------------------------------------------
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def SetupMemoryFiles():
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# Set up an in-memory file system with virtual "files" that can be
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# loaded into the webview just like network or local file sources.
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# These "files" can be access using a protocol specifier of "memory:"
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wx.FileSystem.AddHandler(wx.MemoryFSHandler())
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wx.FileSystem.AddHandler(wx.ArchiveFSHandler())
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wx.MemoryFSHandler.AddFile(
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"page1.html",
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"<html><head><title>File System Example</title>"
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"<link rel='stylesheet' type='text/css' href='memory:test.css'>"
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"</head><body><h1>Page 1</h1>"
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"<p><img src='memory:logo.png'></p>"
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"<p>This file was loaded directly from a virtual in-memory filesystem.</p>"
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"<p>Here's another page: <a href='memory:page2.html'>Page 2</a>.</p></body>")
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wx.MemoryFSHandler.AddFile(
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"page2.html",
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"<html><head><title>File System Example</title>"
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"<link rel='stylesheet' type='text/css' href='memory:test.css'>"
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"</head><body><h1>Page 2</h1>"
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"<p><a href='memory:page1.html'>Page 1</a> was better.</p></body>")
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wx.MemoryFSHandler.AddFile(
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"test.css",
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"h1 {color: red;}")
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wx.MemoryFSHandler.AddFile('logo.png', wx.Bitmap(LOGO), wx.BITMAP_TYPE_PNG)
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#--------------------------------------------------------------------------
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class CustomWebViewHandler(webview.WebViewHandler):
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# This shows how to make a custom handler for providing content to the
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# WebView for a specific scheme ("custom:" in this case). This handler
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# class simply needs to implement the GetFile method, which will be called
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# whenever a resource with a matching scheme is to be loaded, and it needs
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# to respond by returning a wx.FSFile object. This means that, unlike the
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# wx.MemoryFSHandler, content can be generated on the fly rather than
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# needing to be preloaded into a filesystem.
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#
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def __init__(self):
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wx.html2.WebViewHandler.__init__(self, 'custom')
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self.count = 0
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def GetFile(self, uri):
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# We'll just provide the same content for every URI in this example, but
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# normally you would generate or fetch appropriate content that is
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# referenced by the given URI.
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self.count += 1
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content = """\
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<html><head><title>Custom Handler Example</title></head>
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<body><h1>Custom Handler Example</h1>
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<p>This page is provided dynamically from the CustomWebViewHandler class.</p>
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<p>It has been loaded {} times.</p>
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</body></html>""".format(self.count)
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stream = BytesIO(content.encode('utf-8'))
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fsfile = wx.FSFile(stream, uri, 'page1.html', 'text/html', wx.DateTime.Now())
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return fsfile
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#--------------------------------------------------------------------------
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def main():
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app = wx.App()
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SetupMemoryFiles()
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frm = SampleFrame(None)
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frm.Show()
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app.MainLoop()
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#--------------------------------------------------------------------------
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if __name__ == '__main__':
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main()
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