gramps/src/plugins/view/htmlrenderer.py
2010-02-07 18:03:32 +00:00

662 lines
20 KiB
Python

# -*- python -*-
# -*- coding: utf-8 -*-
#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2007-2009 Serge Noiraud
# Copyright (C) 2008 Benny Malengier
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# $Id$
"""
Html Renderer
Can use the Webkit or Gecko ( Mozilla ) library
"""
#-------------------------------------------------------------------------
#
# Python modules
#
#-------------------------------------------------------------------------
from gen.ggettext import gettext as _
import os
import locale
import urlparse
#-------------------------------------------------------------------------
#
# GTK/Gnome modules
#
#-------------------------------------------------------------------------
import gtk
#-------------------------------------------------------------------------
#
# Gramps Modules
#
#-------------------------------------------------------------------------
from gui.views.pageview import PageView
import Utils
import constfunc
import config
from const import TEMP_DIR
#-------------------------------------------------------------------------
#
# Functions
#
#-------------------------------------------------------------------------
def get_identity():
if constfunc.lin():
platform = "X11"
elif constfunc.win():
platform = "Windows"
elif constfunc.mac():
platform = "Macintosh"
else:
platform = "Unknown"
(lang_country, modifier ) = locale.getlocale()
lang = lang_country.replace('_','-')
#lang += ", " + lang_country.split('_')[0]
return "Mozilla/5.0 (%s; U; %s) Gramps/3.2" % ( platform, lang)
#-------------------------------------------------------------------------
#
# Constants
#
#-------------------------------------------------------------------------
# I think we should set the two following variable in const.py
# They are used only with gtkmozembed.
MOZEMBED_PATH = TEMP_DIR
MOZEMBED_SUBPATH = Utils.get_empty_tempdir('mozembed_gramps')
GEOVIEW_SUBPATH = Utils.get_empty_tempdir('geoview')
NOWEB = 0
WEBKIT = 1
MOZILLA = 2
KITNAME = [ "None", "WebKit", "Mozilla" ]
URL_SEP = '/'
MOZJS = '''
user_pref("network.proxy.type", 1);
user_pref("network.proxy.http", %(host)s);
user_pref("network.proxy.http_port", %(port)s);
user_pref("network.proxy.no_proxies_on",
"127.0.0.1,localhost,localhost
.localdomain")
user_pref("network.proxy.share_proxy_settings", true);
user_pref("network.http.proxy.pipelining", true);
user_pref("network.http.proxy.keep-alive", true);
user_pref("network.http.proxy.version", 1.1);
user_pref("network.http.sendRefererHeader, 0);
user_pref("general.useragent.extra.firefox, "Mozilla/5.0");
user_pref("general.useragent.locale, %(lang)s);
'''
#-------------------------------------------------------------------------
#
# What Web interfaces ?
#
# We use firstly webkit if it is present. If not, we use gtkmozembed.
# If no web interface is present, we don't register GeoView in the gui.
#-------------------------------------------------------------------------
TOOLKIT = NOWEB
try:
import webkit
TOOLKIT = WEBKIT
except:
try:
import gtkmozembed
TOOLKIT = MOZILLA
except:
pass
#no interfaces present, raise Error so that options for GeoView do not show
if TOOLKIT == NOWEB :
raise ImportError, 'No GTK html plugin found'
#-------------------------------------------------------------------------
#
# Renderer
#
#-------------------------------------------------------------------------
#class Renderer(object):
class Renderer():
"""
Renderer renders the webpage. Several backend implementations are
possible
"""
def __init__(self):
self.window = None
def get_window(self):
"""
Returns a container class with the widget that contains browser
window
"""
return self.window
def get_uri(self):
"""
Get the current url
"""
raise NotImplementedError
def show_all(self):
"""
show all in the main window.
"""
self.window.show_all()
def open(self, url):
"""
open the webpage at url
"""
raise NotImplementedError
def refresh(self):
"""
We need to reload the page.
"""
raise NotImplementedError
def go_back(self):
"""
Go to the previous page.
"""
self.window.go_back()
def can_go_back(self):
"""
is the browser able to go backward ?
"""
return self.window.can_go_back()
def go_forward(self):
"""
Go to the next page.
"""
self.window.go_forward()
def can_go_forward(self):
"""
is the browser able to go forward ?
"""
return self.window.can_go_forward()
def get_title(self):
"""
We need to get the html title page.
"""
raise NotImplementedError
def execute_script(self, url):
"""
execute javascript in the current html page
"""
raise NotImplementedError
def page_loaded(self, *args):
"""
The page is completely loaded.
"""
raise NotImplementedError
def set_button_sensitivity(self):
"""
We must set the back and forward button in the HtmlView class.
"""
raise NotImplementedError
#-------------------------------------------------------------------------
#
# Renderer with WebKit
#
#-------------------------------------------------------------------------
class RendererWebkit(Renderer):
"""
Implementation of Renderer with Webkit
"""
def __init__(self):
Renderer.__init__(self)
self.window = webkit.WebView()
try:
self.window.set_custom_encoding('utf-8') # needs webkit 1.1.10
except: # pylint: disable-msg=W0702
pass
settings = self.window.get_settings()
try:
proxy = os.environ['http_proxy']
# webkit use libsoup instead of libcurl.
#if proxy:
# settings.set_property("use-proxy", True)
except: # pylint: disable-msg=W0702
pass
#settings.set_property("ident-string", get_identity())
# do we need it ? Yes if webkit avoid to use local files for security
## The following available starting from WebKitGTK+ 1.1.13
#settings.set_property("enable-universal-access-from-file-uris", True)
self.browser = WEBKIT
self.title = None
self.frame = self.window.get_main_frame()
self.frame.connect("load-done", self.page_loaded)
self.frame.connect("title-changed", self.get_title)
self.fct = None
def page_loaded(self, *args):
"""
We just loaded one page in the browser.
Set the button sensitivity
"""
self.set_button_sensitivity()
def set_button_sensitivity(self):
"""
We must set the back and forward button in the HtmlView class.
"""
self.fct()
def open(self, url):
"""
We need to load the page in the browser.
"""
self.window.open(url)
def refresh(self):
"""
We need to reload the page in the browser.
"""
self.window.reload()
def get_title(self, *args):
"""
We need to get the html title page.
"""
self.title = self.frame.get_title()
def execute_script(self, url):
"""
We need to execute a javascript function into the browser
"""
self.window.execute_script(url)
def get_uri(self):
"""
What is the uri loaded in the browser ?
"""
return self.window.get_main_frame().get_uri()
#-------------------------------------------------------------------------
#
# The Mozilla or Gecko Renderer class
#
#-------------------------------------------------------------------------
class RendererMozilla(Renderer):
"""
Implementation of Renderer with gtkmozembed
"""
def __init__(self):
Renderer.__init__(self)
if hasattr(gtkmozembed, 'set_profile_path'):
set_profile_path = gtkmozembed.set_profile_path
else:
set_profile_path = gtkmozembed.gtk_moz_embed_set_profile_path
set_profile_path(MOZEMBED_PATH, MOZEMBED_SUBPATH)
self.__set_mozembed_proxy()
self.window = gtkmozembed.MozEmbed()
self.browser = MOZILLA
self.title = None
self.handler = self.window.connect("net-stop", self.page_loaded)
self.window.connect("title", self.get_title)
self.fct = None
def page_loaded(self, *args):
"""
We just loaded one page in the browser.
Set the button sensitivity
"""
self.set_button_sensitivity()
def set_button_sensitivity(self):
"""
We must set the back and forward button in the HtmlView class.
"""
self.fct()
def open(self, url):
"""
We need to load the page in the browser.
"""
self.window.load_url(url)
def get_title(self, *args):
"""
We need to get the html title page.
"""
self.title = self.window.get_title()
def execute_script(self, url):
"""
We need to execute a javascript function into the browser
"""
self.window.load_url(url)
def get_uri(self):
"""
What is the uri loaded in the browser ?
"""
return self.window.get_location()
def refresh(self):
"""
We need to reload the page in the browser.
"""
self.window.reload(0)
def __set_mozembed_proxy(self):
"""
Try to see if we have some proxy environment variable.
http_proxy in our case.
The standard format is : http://[user:password@]proxy:port/
"""
try:
proxy = os.environ['http_proxy']
if proxy:
host_port = None
prefs = open(os.path.join(MOZEMBED_SUBPATH,
"prefs.js"),
"w+")
if not os.path.exists(prefs):
parts = urlparse.urlparse(proxy)
if not parts[0] or parts[0] == 'http':
host_port = parts[1]
hport = host_port.split(':')
host = hport[0].strip()
if host:
try:
port = int(hport[1])
except:
user = host
uprox = hport[1].split('@')
password = uprox[0]
host = uprox[1]
port = int(hport[2])
if port and host:
port = str(port)
(lang_country, modifier ) = locale.getlocale()
lang = lang_country.split('_')[0]
prefs.write(MOZJS % vars() )
prefs.close()
except:
try: # trying to remove pref.js in case of proxy change.
os.remove(os.path.join(MOZEMBED_SUBPATH, "prefs.js"))
except:
pass
#-------------------------------------------------------------------------
#
# HtmlView
#
#-------------------------------------------------------------------------
class HtmlView(PageView):
"""
HtmlView is a view showing a top widget with controls, and a bottom part
with an embedded webbrowser showing a given URL
"""
def __init__(self, dbstate, uistate, title=_('HtmlView')):
PageView.__init__(self, title, dbstate, uistate)
self.dbstate = dbstate
self.back_action = None
self.forward_action = None
self.renderer = None
self.urlfield = ""
self.htmlfile = ""
self.filter = gtk.HBox()
self.table = ""
self.browser = NOWEB
self.bootstrap_handler = None
self.box = None
def build_widget(self):
"""
Builds the interface and returns a gtk.Container type that
contains the interface. This containter will be inserted into
a gtk.Notebook page.
"""
self.box = gtk.VBox(False, 4)
#top widget at the top
self.box.pack_start(self.top_widget(), False, False, 0 )
#web page under it in a scrolled window
self.table = gtk.Table(1, 1, False)
frames = gtk.HBox(False, 4)
frame = gtk.ScrolledWindow(None, None)
frame.set_shadow_type(gtk.SHADOW_NONE)
frame.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
frame.add_with_viewport(self.table)
self.bootstrap_handler = self.box.connect("size-request",
self.init_parent_signals_for_map)
self.table.get_parent().set_shadow_type(gtk.SHADOW_NONE)
self.table.set_row_spacings(1)
self.table.set_col_spacings(0)
if (TOOLKIT == WEBKIT) :
# We use webkit
self.renderer = RendererWebkit()
elif (TOOLKIT == MOZILLA) :
# We use gtkmozembed
self.renderer = RendererMozilla()
self.table.add(self.renderer.get_window())
frames.set_homogeneous(False)
frames.pack_start(frame, True, True, 0)
frames.pack_end(self.filter, False, False, 0)
self.box.pack_start(frames, True, True, 0)
# this is used to activate the back and forward button
# from the renderer class.
self.renderer.fct = lambda: self.set_button_sensitivity
self.renderer.show_all()
self.filter.hide()
#load a welcome html page
urlhelp = self._create_start_page()
self.open(urlhelp)
return self.box
def top_widget(self):
"""
The default class gives a widget where user can type an url
"""
hbox = gtk.HBox(False, 4)
self.urlfield = gtk.Entry()
self.urlfield.set_text(config.get("htmlview.start-url"))
self.urlfield.connect('activate', self._on_activate)
hbox.pack_start(self.urlfield, True, True, 4)
button = gtk.Button(stock=gtk.STOCK_APPLY)
button.connect('clicked', self._on_activate)
hbox.pack_start(button, False, False, 4)
return hbox
def set_button_sensitivity(self):
"""
Set the backward and forward button in accordance to the browser.
"""
self.forward_action.set_sensitive(self.renderer.can_go_forward())
self.back_action.set_sensitive(self.renderer.can_go_back())
def open(self, url):
"""
open an url
"""
self.renderer.open(url)
def go_back(self, button):
"""
Go to the previous loaded url.
"""
self.renderer.go_back()
self.set_button_sensitivity()
self.external_uri()
def go_forward(self, button):
"""
Go to the next loaded url.
"""
self.renderer.go_forward()
self.set_button_sensitivity()
self.external_uri()
def refresh(self, button):
"""
Force to reload the page.
"""
self.renderer.refresh()
def external_uri(self):
"""
used to resize or not resize depending on external or local file.
"""
uri = self.renderer.get_uri()
def _on_activate(self, nobject):
"""
Here when we activate the url button.
"""
url = self.urlfield.get_text()
if url.find('://') == -1:
url = 'http://'+ url
self.open(url)
def build_tree(self):
"""
Rebuilds the current display. Called from ViewManager
"""
pass #htmlview is build on click and startup
def get_stock(self):
"""
Returns the name of the stock icon to use for the display.
This assumes that this icon has already been registered
as a stock icon.
"""
return 'gramps-view'
def get_viewtype_stock(self):
"""Type of view in category
"""
return 'gramps-view'
def ui_definition(self):
"""
Specifies the UIManager XML code that defines the menus and buttons
associated with the interface.
"""
return '''<ui>
<toolbar name="ToolBar">
<placeholder name="CommonNavigation">
<toolitem action="Back"/>
<toolitem action="Forward"/>
<toolitem action="Refresh"/>
</placeholder>
</toolbar>
</ui>'''
def define_actions(self):
"""
Required define_actions function for PageView. Builds the action
group information required.
"""
HtmlView._define_actions_fw_bw(self)
def _define_actions_fw_bw(self):
"""
prepare the forward and backward buttons.
add the Backward action to handle the Backward button
accel doesn't work in webkit and gtkmozembed !
we must do that ...
"""
self.back_action = gtk.ActionGroup(self.title + '/Back')
self.back_action.add_actions([
('Back', gtk.STOCK_GO_BACK, _("_Back"),
"<ALT>Left", _("Go to the previous page in the history"),
self.go_back)
])
self._add_action_group(self.back_action)
# add the Forward action to handle the Forward button
self.forward_action = gtk.ActionGroup(self.title + '/Forward')
self.forward_action.add_actions([
('Forward', gtk.STOCK_GO_FORWARD, _("_Forward"),
"<ALT>Right", _("Go to the next page in the history"),
self.go_forward)
])
self._add_action_group(self.forward_action)
# add the Refresh action to handle the Refresh button
self._add_action('Refresh', gtk.STOCK_REFRESH, _("_Refresh"),
callback=self.refresh,
accel="<Ctl>R",
tip=_("Stop and reload the page."))
def init_parent_signals_for_map(self, widget, event):
"""
Required to properly bootstrap the signal handlers.
This handler is connected by build_widget.
After the outside ViewManager has placed this widget we are
able to access the parent container.
"""
pass
def get_renderer(self):
"""
return the renderer : Webkit, Mozilla or None
"""
#return self.browser
return KITNAME[self.browser]
def _create_start_page(self):
"""
This command creates a default start page, and returns the URL of
this page.
"""
tmpdir = GEOVIEW_SUBPATH
data = """
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" \
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<title>%(title)s</title>
</head>
<body >
<H4>%(content)s</H4>
</body>
</html>
""" % { 'height' : 600,
'title' : _('Start page for the Html View'),
'content': _('Type a webpage address at the top, and hit'
' the execute button to load a webpage in this'
' page\n<br>\n'
'For example: <b>http://gramps-project.org</p>')
}
filename = os.path.join(tmpdir, 'startpage.html')
# Now we have two views : Web and Geography, we need to create the
# startpage only once.
if not os.path.exists(filename):
ufd = file(filename, "w+")
ufd.write(data)
ufd.close()
return urlparse.urlunsplit(('file', '',
URL_SEP.join(filename.split(os.sep)),
'', ''))