browser.py

#!/usr/bin/env python2
import sys
import os
import gtk
import gobject
import webkit
import Queue
import threading
from time import sleep
import re
import subprocess
import shlex
import dbus
import dbus.service
from dbus.mainloop.glib import DBusGMainLoop


dir_ = os.path.dirname(os.path.realpath(__file__))
DEFAULT_URL = 'file://{}/index.html'.format(dir_)

class SimpleBrowser: # needs GTK, Python, Webkit-GTK
    command = None
    process = None

    def __init__(self):
        self.isPageLoaded = False
        self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
        self.window.set_position(gtk.WIN_POS_CENTER_ALWAYS)
        self.window.set_type_hint(gtk.gdk.WINDOW_TYPE_HINT_DESKTOP)
        self.window.connect('delete_event', self.close_application)
        screen = self.window.get_screen()
        self.window.set_default_size(screen.get_width(), screen.get_height())
        vbox = gtk.VBox(spacing=0)
        vbox.set_border_width(0)
        self.scrolled_window = gtk.ScrolledWindow()
        self.webview = webkit.WebView()
        self.webview.connect("title-changed", self.title_changed) #Hack. Using title for message passing.
        self.webview.connect("context-menu", self.context_menu)
        self.webview.connect("navigation-policy-decision-requested", self.navigation_requested)
        self.scrolled_window.add(self.webview)
        vbox.pack_start(self.scrolled_window, fill=True, expand=True)
        self.window.add(vbox)
    
    def open(self, url):
        self.webview.open(url)
    
    def title_changed(self, widget, frame, msg):
        def getoutput(out, script):
            #print "Starting out"
            for line in iter(out.readline, b''):
                #print("injecting: " + "(" + script +     ")('" + line.strip().replace("'","\\'") + "')")
                gobject.idle_add(self.webview.execute_script, "(" + script + ")('" + line.strip().replace("'","\\'") + "')")
 
        def geterror(err, script):
            #print "Starting err"
            for line in iter(err.readline, b''):
                #print("injecting: " + "(" + script +     ")('" + line.strip().replace("'","\\'") + "')")
                gobject.idle_add(self.webview.execute_script, "(" + script + ")('<i>" + line.strip().replace("'","\\'") + "</i>')")

        if self.command == None:
            self.command = msg
        else:
            #print("executing: " + self.command)
            self.process = subprocess.Popen(self.command, shell=True, bufsize=1, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            tOut = threading.Thread(target=getoutput, args=(self.process.stdout, msg))
            tOut.deamon = True
            tOut.start() 
            tErr = threading.Thread(target=geterror, args=(self.process.stderr, msg))
            tErr.deamon = True
            tErr.start()

            self.command = None
                
    
    def navigation_requested(self, widget, frame, request, action, decision):
        if self.isPageLoaded:
            #print request.get_uri()
            return True
        else:
            self.isPageLoaded = True
    
    def context_menu(self, widget, result, keyboard, user_data):
        return True
        
    def show(self):
        self.window.show_all()
    
    def close_application(self, widget, event, data=None):
        gtk.main_quit()

class DBusService(dbus.service.Object):
    def __init__(self):
        bus_name = dbus.service.BusName('com.freundtech.ingressdesktop', bus=dbus.SessionBus())
        dbus.service.Object.__init__(self, bus_name, '/com/freundtech/ingressdesktop')

    @dbus.service.method('com.freundtech.ingressdesktop', in_signature='s')
    def execute(self, script):
        gobject.idle_add(browser.webview.execute_script, script)

if __name__ == '__main__':
    if len(sys.argv) > 1:
        url = sys.argv[1]
    else:
        url = DEFAULT_URL
    gtk.gdk.threads_init()
    gobject.threads_init()
    
    import signal
    signal.signal(signal.SIGINT, signal.SIG_DFL)

    browser = SimpleBrowser()
    browser.open(url)
    browser.show()


    DBusGMainLoop(set_as_default=True)
    service = DBusService()
    gtk.main()