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# -*- coding: utf-8 -*-
#
# File: portato/gui/windows/basic.py
# This file is part of the Portato-Project, a graphical portage-frontend.
#
# Copyright (C) 2006-2010 René 'Necoro' Neumann
# This is free software. You may redistribute copies of it under the terms of
# the GNU General Public License version 2.
# There is NO WARRANTY, to the extent permitted by law.
#
# Written by René 'Necoro' Neumann <necoro@necoro.net>
from __future__ import absolute_import
# gtk stuff
import gtk
import gobject
from functools import wraps
import os.path
from ...constants import TEMPLATE_DIR, APP, LOCALE_DIR
from ...helper import error, debug
# for the GtkBuilder to translate correctly :)
import ctypes
from locale import CODESET
try:
getlib = ctypes.cdll.LoadLibrary("libgettextlib.so")
except OSError:
error("'libgettextlib.so' cannot be loaded. Might be, that there are no translations available in the GUI.")
else:
getlib.textdomain(APP)
getlib.bindtextdomain(APP, LOCALE_DIR)
getlib.bind_textdomain_codeset(APP, "UTF-8")
# some debugging output about the current codeset used
nll = getlib.nl_langinfo
nll.restype = ctypes.c_char_p
debug("Switching from '%s' to 'UTF-8'.", nll(CODESET))
getlib.bind_textdomain_codeset(APP, "UTF-8")
class WrappedTree (object):
__slots__ = ("klass", "tree", "get_widget", "get_ui")
def __init__ (self, klass, tree):
self.tree = tree
self.klass = klass
def __getattribute__ (self, name):
if name in WrappedTree.__slots__:
return object.__getattribute__(self, name)
else:
return getattr(self.tree, name)
def get_widget(self, name):
w = self.tree.get_object(name)
if w is None:
error("Widget '%s' could not be found in class '%s'.", name, self.klass)
return w
def get_ui (self, name, ui = "uimanager"):
uiw = self.get_widget(ui)
if uiw is None:
return None
if not name.startswith("ui/"):
name = "ui/%s" % name
w = uiw.get_widget(name)
if w is None:
error("UIItem '%s' of UIManager '%s' could not be found in class '%s'.", name, ui, self.klass)
return w
class UIBuilder (object):
def __init__ (self, connector = None):
if not hasattr(self, "__file__"):
self.__file__ = self.__class__.__name__
# general setup
self._builder = gtk.Builder()
self._builder.add_from_file(os.path.join(TEMPLATE_DIR, self.__file__+".ui"))
self._builder.set_translation_domain(APP)
self.tree = WrappedTree(self.__class__.__name__, self._builder)
# load menu if existing
menufile = os.path.join(TEMPLATE_DIR, self.__file__+".menu")
if os.path.exists(menufile):
debug("There is a menu-file for '%s'. Trying to load it.", self.__file__)
barbox = self.tree.get_widget("menubar_box")
if barbox is not None:
self._builder.add_from_file(menufile)
bar = self.tree.get_ui("menubar")
barbox.pack_start(bar, expand = False, fill = False)
# signal connections
if connector is None: connector = self
unconnected = self._builder.connect_signals(connector)
if unconnected is not None:
for uc in set(unconnected):
error("Signal '%s' not connected in class '%s'.", uc, self.__class__.__name__)
class Window (UIBuilder):
def __init__ (self):
UIBuilder.__init__(self)
if not hasattr(self, "__window__"):
self.__window__ = self.__class__.__name__
self.window = self.tree.get_widget(self.__window__)
@staticmethod
def watch_cursor (func):
"""This is a decorator for functions being so time consuming, that it is appropriate to show the watch-cursor.
@attention: this function relies on the gtk.Window-Object being stored as self.window"""
@wraps(func)
def wrapper (self, *args, **kwargs):
ret = None
def cb_idle():
try:
ret = func(self, *args, **kwargs)
finally:
self.window.window.set_cursor(None)
return False
watch = gtk.gdk.Cursor(gtk.gdk.WATCH)
self.window.window.set_cursor(watch)
gobject.idle_add(cb_idle)
return ret
return wrapper
class AbstractDialog (Window):
"""A class all our dialogs get derived from. It sets useful default vars and automatically handles the ESC-Button."""
def __init__ (self, parent):
"""Constructor.
@param parent: the parent window
@type parent: gtk.Window"""
Window.__init__(self)
# set parent
self.window.set_transient_for(parent)
self.parent = parent
# type hint
self.window.set_type_hint(gtk.gdk.WINDOW_TYPE_HINT_DIALOG)
# catch the ESC-key
self.window.connect("key-press-event", self.cb_key_pressed)
def cb_key_pressed (self, widget, event):
"""Closes the window if ESC is pressed."""
keyname = gtk.gdk.keyval_name(event.keyval)
if keyname == "Escape":
self.close()
return True
else:
return False
def close (self, *args):
self.window.destroy()
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