cefpython/cefpython/cef3/linux/binaries_64bit/wxpython.py at c385b49b62f7f7c0c3f64a66d0e2e140423a7376 · git-thinh/cefpython

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# An example of embedding CEF browser in wxPython on Linux.

# Important:

# On Linux importing the cefpython module must be

# the very first in your application. This is because CEF makes

# a global tcmalloc hook for memory allocation/deallocation.

# See Issue 73 that is to provide CEF builds with tcmalloc disabled:

# https://code.google.com/p/cefpython/issues/detail?id=73

import ctypes, os, sys

libcef_so = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'libcef.so')

if os.path.exists(libcef_so):

# Import local module

ctypes.CDLL(libcef_so, ctypes.RTLD_GLOBAL)

if 0x02070000 <= sys.hexversion < 0x03000000:

import cefpython_py27 as cefpython

else:

raise Exception("Unsupported python version: %s" % sys.version)

else:

# Import from package

from cefpython3 import cefpython

import wx

import time

import re

import uuid

import platform

# Which method to use for message loop processing.

# EVT_IDLE - wx application has priority (default)

# EVT_TIMER - cef browser has priority

# It seems that Flash content behaves better when using a timer.

# IMPORTANT! On Linux EVT_IDLE does not work, the events seems to

# be propagated only when you move your mouse, which is not the

# expected behavior, it is recommended to use EVT_TIMER on Linux,

# so set this value to False.

USE_EVT_IDLE = False

def GetApplicationPath(file=None):

import re, os, platform

# If file is None return current directory without trailing slash.

if file is None:

file = ""

# Only when relative path.

if not file.startswith("/") and not file.startswith("\\") and (

not re.search(r"^[\w-]+:", file)):

if hasattr(sys, "frozen"):

path = os.path.dirname(sys.executable)

elif "__file__" in globals():

path = os.path.dirname(os.path.realpath(__file__))

else:

path = os.getcwd()

path = path + os.sep + file

if platform.system() == "Windows":

path = re.sub(r"[/\\]+", re.escape(os.sep), path)

path = re.sub(r"[/\\]+$", "", path)

return path

return str(file)

def ExceptHook(excType, excValue, traceObject):

import traceback, os, time, codecs

# This hook does the following: in case of exception write it to

# the "error.log" file, display it to the console, shutdown CEF

# and exit application immediately by ignoring "finally" (os._exit()).

errorMsg = "\n".join(traceback.format_exception(excType, excValue,

traceObject))

errorFile = GetApplicationPath("error.log")

try:

appEncoding = cefpython.g_applicationSettings["string_encoding"]

except:

appEncoding = "utf-8"

if type(errorMsg) == bytes:

errorMsg = errorMsg.decode(encoding=appEncoding, errors="replace")

try:

with codecs.open(errorFile, mode="a", encoding=appEncoding) as fp:

fp.write("\n[%s] %s\n" % (

time.strftime("%Y-%m-%d %H:%M:%S"), errorMsg))

except:

print("cefpython: WARNING: failed writing to error file: %s" % (

errorFile))

# Convert error message to ascii before printing, otherwise

# you may get error like this:

# | UnicodeEncodeError: 'charmap' codec can't encode characters

errorMsg = errorMsg.encode("ascii", errors="replace")

errorMsg = errorMsg.decode("ascii", errors="replace")

print("\n"+errorMsg+"\n")

cefpython.QuitMessageLoop()

cefpython.Shutdown()

os._exit(1)

class MainFrame(wx.Frame):

browser = None

mainPanel = None

def __init__(self):

wx.Frame.__init__(self, parent=None, id=wx.ID_ANY,

title='wxPython CEF 3 example', size=(800,600))

self.CreateMenu()

# Cannot attach browser to the main frame as this will cause

# the menu not to work.

# --

# You also have to set the wx.WANTS_CHARS style for

# all parent panels/controls, if it's deeply embedded.

self.mainPanel = wx.Panel(self, style=wx.WANTS_CHARS)

windowInfo = cefpython.WindowInfo()

windowInfo.SetAsChild(self.mainPanel.GetGtkWidget())

# Linux requires adding "file://" for local files,

# otherwise /home/some will be replaced as http://home/some

self.browser = cefpython.CreateBrowserSync(

windowInfo,

# If there are problems with Flash you can disable it here,

# by disabling all plugins.

browserSettings={"plugins_disabled": False},

navigateUrl="file://"+GetApplicationPath("wxpython.html"))

clientHandler = ClientHandler()

self.browser.SetClientHandler(clientHandler)

cefpython.SetGlobalClientCallback("OnCertificateError",

clientHandler._OnCertificateError)

cefpython.SetGlobalClientCallback("OnBeforePluginLoad",

clientHandler._OnBeforePluginLoad)

jsBindings = cefpython.JavascriptBindings(

bindToFrames=False, bindToPopups=True)

jsBindings.SetFunction("PyPrint", PyPrint)

jsBindings.SetProperty("pyProperty", "This was set in Python")

jsBindings.SetProperty("pyConfig", ["This was set in Python",

{"name": "Nested dictionary", "isNested": True},

[1,"2", None]])

jsBindings.SetObject("external", JavascriptExternal(self.browser))

self.browser.SetJavascriptBindings(jsBindings)

self.Bind(wx.EVT_CLOSE, self.OnClose)

if USE_EVT_IDLE:

# Bind EVT_IDLE only for the main application frame.

self.Bind(wx.EVT_IDLE, self.OnIdle)

def CreateMenu(self):

filemenu = wx.Menu()

filemenu.Append(1, "Open")

exit = filemenu.Append(2, "Exit")

self.Bind(wx.EVT_MENU, self.OnClose, exit)

aboutmenu = wx.Menu()

aboutmenu.Append(1, "CEF Python")

menubar = wx.MenuBar()

menubar.Append(filemenu,"&File")

menubar.Append(aboutmenu, "&About")

self.SetMenuBar(menubar)

def OnClose(self, event):

self.browser.CloseBrowser()

self.Destroy()

def OnIdle(self, event):

cefpython.MessageLoopWork()

def PyPrint(message):

print(message)

class JavascriptExternal:

mainBrowser = None

def __init__(self, mainBrowser):

self.mainBrowser = mainBrowser

def GoBack(self):

self.mainBrowser.GoBack()

def GoForward(self):

self.mainBrowser.GoForward()

def CreateAnotherBrowser(self):

frame = MainFrame()

frame.Show()

def Print(self, message):

print(message)

def TestAllTypes(self, *args):

print(args)

def ExecuteFunction(self, *args):

self.mainBrowser.GetMainFrame().ExecuteFunction(*args)

def TestJSCallback(self, jsCallback):

print("jsCallback.GetFunctionName() = %s" % jsCallback.GetFunctionName())

print("jsCallback.GetFrame().GetIdentifier() = %s" % \

jsCallback.GetFrame().GetIdentifier())

jsCallback.Call("This message was sent from python using js callback")

def TestJSCallbackComplexArguments(self, jsObject):

jsCallback = jsObject["myCallback"];

jsCallback.Call(1, None, 2.14, "string", ["list", ["nested list", \

{"nested object":None}]], \

{"nested list next":[{"deeply nested object":1}]})

def TestPythonCallback(self, jsCallback):

jsCallback.Call(self.PyCallback)

def PyCallback(self, *args):

message = "PyCallback() was executed successfully! Arguments: %s" \

% str(args)

print(message)

self.mainBrowser.GetMainFrame().ExecuteJavascript(

"window.alert(\"%s\")" % message)

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

# Cookies

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

cookieVisitor = None

def VisitAllCookies(self):

# Need to keep the reference alive.

self.cookieVisitor = CookieVisitor()

cookieManager = self.mainBrowser.GetUserData("cookieManager")

if not cookieManager:

print("\nCookie manager not yet created! Visit http website first")

return

cookieManager.VisitAllCookies(self.cookieVisitor)

def VisitUrlCookies(self):

# Need to keep the reference alive.

self.cookieVisitor = CookieVisitor()

cookieManager = self.mainBrowser.GetUserData("cookieManager")

if not cookieManager:

print("\nCookie manager not yet created! Visit http website first")

return

cookieManager.VisitUrlCookies(

"http://www.html-kit.com/tools/cookietester/",

False, self.cookieVisitor)

# .www.html-kit.com

def SetCookie(self):

cookieManager = self.mainBrowser.GetUserData("cookieManager")

if not cookieManager:

print("\nCookie manager not yet created! Visit http website first")

return

cookie = cefpython.Cookie()

cookie.SetName("Created_Via_Python")

cookie.SetValue("yeah really")

cookieManager.SetCookie("http://www.html-kit.com/tools/cookietester/",

cookie)

print("\nCookie created! Visit html-kit cookietester to see it")

def DeleteCookies(self):

cookieManager = self.mainBrowser.GetUserData("cookieManager")

if not cookieManager:

print("\nCookie manager not yet created! Visit http website first")

return

cookieManager.DeleteCookies(

"http://www.html-kit.com/tools/cookietester/",

"Created_Via_Python")

print("\nCookie deleted! Visit html-kit cookietester to see the result")

class CookieVisitor:

def Visit(self, cookie, count, total, deleteCookie):

if count == 0:

print("\nCookieVisitor.Visit(): total cookies: %s" % total)

print("\nCookieVisitor.Visit(): cookie:")

print(cookie.Get())

# True to continue visiting cookies

return True

class ClientHandler:

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

# DisplayHandler

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

def OnLoadingStateChange(self, browser, isLoading, canGoBack,

canGoForward):

print("DisplayHandler::OnLoadingStateChange()")

print("isLoading = %s, canGoBack = %s, canGoForward = %s" \

% (isLoading, canGoBack, canGoForward))

def OnAddressChange(self, browser, frame, url):

print("DisplayHandler::OnAddressChange()")

print("url = %s" % url)

def OnTitleChange(self, browser, title):

print("DisplayHandler::OnTitleChange()")

print("title = %s" % title)

def OnTooltip(self, browser, textOut):

# OnTooltip not yet implemented (both Linux and Windows),

# will be fixed in next CEF release, see Issue 783:

# https://code.google.com/p/chromiumembedded/issues/detail?id=783

print("DisplayHandler::OnTooltip()")

print("text = %s" % textOut[0])

statusMessageCount = 0

def OnStatusMessage(self, browser, value):

if not value:

# Do not notify in the console about empty statuses.

return

self.statusMessageCount += 1

if self.statusMessageCount > 3:

# Do not spam too much.

return

print("DisplayHandler::OnStatusMessage()")

print("value = %s" % value)

def OnConsoleMessage(self, browser, message, source, line):

print("DisplayHandler::OnConsoleMessage()")

print("message = %s" % message)

print("source = %s" % source)

print("line = %s" % line)

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

# KeyboardHandler

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

def OnPreKeyEvent(self, browser, event, eventHandle,

isKeyboardShortcutOut):

print("KeyboardHandler::OnPreKeyEvent()")

def OnKeyEvent(self, browser, event, eventHandle):

print("KeyboardHandler::OnKeyEvent()")

print("native_key_code = %s" % event["native_key_code"])

if platform.system() == "Linux":

# F5 = 71

if event["native_key_code"] == 71:

print("F5 pressed! Reloading page..")

browser.ReloadIgnoreCache()

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

# RequestHandler

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

def OnBeforeResourceLoad(self, browser, frame, request):

print("RequestHandler::OnBeforeResourceLoad()")

print("url = %s" % request.GetUrl()[:70])

return False

def OnResourceRedirect(self, browser, frame, oldUrl, newUrlOut):

print("RequestHandler::OnResourceRedirect()")

print("old url = %s" % oldUrl[:70])

print("new url = %s" % newUrlOut[0][:70])

def GetAuthCredentials(self, browser, frame, isProxy, host, port, realm,

scheme, callback):

print("RequestHandler::GetAuthCredentials()")

print("host = %s" % host)

print("realm = %s" % realm)

callback.Continue(username="test", password="test")

return True

def OnQuotaRequest(self, browser, originUrl, newSize, callback):

print("RequestHandler::OnQuotaRequest()")

print("origin url = %s" % originUrl)

print("new size = %s" % newSize)

callback.Continue(True)

return True

def GetCookieManager(self, browser, mainUrl):

# Create unique cookie manager for each browser.

# --

# Buggy implementation in CEF, reported here:

# https://code.google.com/p/chromiumembedded/issues/detail?id=1043

cookieManager = browser.GetUserData("cookieManager")

if cookieManager:

return cookieManager

else:

cookieManager = cefpython.CookieManager.CreateManager("")

browser.SetUserData("cookieManager", cookieManager)

return cookieManager

def OnProtocolExecution(self, browser, url, allowExecutionOut):

# There's no default implementation for OnProtocolExecution on Linux,

# you have to make OS system call on your own. You probably also need

# to use LoadHandler::OnLoadError() when implementing this on Linux.

print("RequestHandler::OnProtocolExecution()")

print("url = %s" % url)

if url.startswith("magnet:"):

print("Magnet link allowed!")

allowExecutionOut[0] = True

def _OnBeforePluginLoad(self, browser, url, policyUrl, info):

# Plugins are loaded on demand, only when website requires it,

# the same plugin may be called multiple times.

print("RequestHandler::OnBeforePluginLoad()")

print("url = %s" % url)

print("policy url = %s" % policyUrl)

print("info.GetName() = %s" % info.GetName())

print("info.GetPath() = %s" % info.GetPath())

print("info.GetVersion() = %s" % info.GetVersion())

print("info.GetDescription() = %s" % info.GetDescription())

# False to allow, True to block plugin.

return False

def _OnCertificateError(self, certError, requestUrl, callback):

print("RequestHandler::OnCertificateError()")

print("certError = %s" % certError)

print("requestUrl = %s" % requestUrl)

if requestUrl.startswith(

"https://sage.math.washington.edu:8091/do-not-allow"):

print("Not allowed!")

return False

if requestUrl.startswith(

"https://sage.math.washington.edu:8091/hudson/job/"):

print("Allowed!")

callback.Continue(True)

return True

return False

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

# LoadHandler

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

def OnLoadStart(self, browser, frame):

print("LoadHandler::OnLoadStart()")

print("frame url = %s" % frame.GetUrl()[:70])

def OnLoadEnd(self, browser, frame, httpStatusCode):

print("LoadHandler::OnLoadEnd()")

print("frame url = %s" % frame.GetUrl()[:70])

# For file:// urls the status code = 0

print("http status code = %s" % httpStatusCode)

def OnLoadError(self, browser, frame, errorCode, errorTextList, failedUrl):

print("LoadHandler::OnLoadError()")

print("frame url = %s" % frame.GetUrl()[:70])

print("error code = %s" % errorCode)

print("error text = %s" % errorTextList[0])

print("failed url = %s" % failedUrl)

customErrorMessage = "My custom error message!"

frame.LoadUrl("data:text/html,%s" % customErrorMessage)

def OnRendererProcessTerminated(self, browser, status):

print("LoadHandler::OnRendererProcessTerminated()")

statuses = {

cefpython.TS_ABNORMAL_TERMINATION: "TS_ABNORMAL_TERMINATION",

cefpython.TS_PROCESS_WAS_KILLED: "TS_PROCESS_WAS_KILLED",

cefpython.TS_PROCESS_CRASHED: "TS_PROCESS_CRASHED"

}

statusName = "Unknown"

if status in statuses:

statusName = statuses[status]

print("status = %s" % statusName)

def OnPluginCrashed(self, browser, pluginPath):

print("LoadHandler::OnPluginCrashed()")

print("plugin path = %s" % pluginPath)

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

# LifespanHandler

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

# Empty place-holders: popupFeatures, windowInfo, client, browserSettings.

def OnBeforePopup(self, browser, frame, targetUrl, targetFrameName,

popupFeatures, windowInfo, client, browserSettings, noJavascriptAccess):

print("LifespanHandler::OnBeforePopup()")

print("targetUrl = %s" % targetUrl)

allowPopups = True

return not allowPopups

class MyApp(wx.App):

timer = None

timerID = 1

timerCount = 0

def OnInit(self):

if not USE_EVT_IDLE:

self.CreateTimer()

frame = MainFrame()

self.SetTopWindow(frame)

frame.Show()

return True

def CreateTimer(self):

# See "Making a render loop":

# http://wiki.wxwidgets.org/Making_a_render_loop

# Another approach is to use EVT_IDLE in MainFrame,

# see which one fits you better.

self.timer = wx.Timer(self, self.timerID)

self.timer.Start(10) # 10ms

wx.EVT_TIMER(self, self.timerID, self.OnTimer)

def OnTimer(self, event):

self.timerCount += 1

# print("wxpython.py: OnTimer() %d" % self.timerCount)

cefpython.MessageLoopWork()

def OnExit(self):

# When app.MainLoop() returns, MessageLoopWork() should

# not be called anymore.

if not USE_EVT_IDLE:

self.timer.Stop()

if __name__ == '__main__':

sys.excepthook = ExceptHook

cefpython.g_debug = False

cefpython.g_debugFile = GetApplicationPath("debug.log")

settings = {

"log_severity": cefpython.LOGSEVERITY_INFO, # LOGSEVERITY_VERBOSE

"log_file": GetApplicationPath("debug.log"), # Set to "" to disable.

"release_dcheck_enabled": True, # Enable only when debugging.

# This directories must be set on Linux

"locales_dir_path": cefpython.GetModuleDirectory()+"/locales",

"resources_dir_path": cefpython.GetModuleDirectory(),

"browser_subprocess_path": "%s/%s" % (

cefpython.GetModuleDirectory(), "subprocess")

}

# print("browser_subprocess_path="+settings["browser_subprocess_path"])

cefpython.Initialize(settings)

print('wx.version=%s' % wx.version())

app = MyApp(False)

app.MainLoop()

# Let wx.App destructor do the cleanup before calling cefpython.Shutdown().

del app

cefpython.Shutdown()

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