/b-gtk/fix-viz

# Copyright (C) 2006 Szilveszter Farkas <szilveszter.farkas@gmail.com>

# Copyright (C) 2007 Jelmer Vernooij <jelmer@samba.org>

# 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

"""GTK UI

"""

import gtk

import sys

import bzrlib.progress

from bzrlib.ui import UIFactory

class PromptDialog(gtk.Dialog):

    """ Prompt the user for a yes/no answer. """

    def __init__(self, prompt):

        gtk.Dialog.__init__(self)

        label = gtk.Label(prompt)

        self.vbox.pack_start(label, padding=10)

        self.vbox.show_all()

        self.add_buttons(gtk.STOCK_YES, gtk.RESPONSE_YES, gtk.STOCK_NO, 

                         gtk.RESPONSE_NO)

class GtkProgressBar(gtk.ProgressBar):

    def __init__(self, stack):

        super(GtkProgressBar, self).__init__()

        self.set_fraction(0.0)

        self._stack = stack

    def finished(self):

        self._stack.remove(self)

    def clear(self):

        pass

    def tick(self):

        self.pulse()

    def update(self, msg=None, current=None, total=None):

        if msg is not None:

            self.set_text(msg)

        if None not in (current, total) and total > 0:

            self.set_fraction(1.0 * current / total)

        while gtk.events_pending():

            gtk.main_iteration()

class GtkProgressBarStack(gtk.Window):

    def __init__(self):

        super(GtkProgressBarStack, self).__init__(type=gtk.WINDOW_TOPLEVEL)

        self.set_border_width(0)

        self.set_title("Progress")

        self.set_position(gtk.WIN_POS_CENTER_ALWAYS)

        self.vbox = gtk.VBox()

        self.add(self.vbox)

        self.set_resizable(False)

    def _adapt_size(self):

        self.resize(250, 15 * len(self.vbox.get_children()))

    def get_nested(self):

        nested = GtkProgressBar(self)

        self.vbox.pack_start(nested)

        self._adapt_size()

        self.show_all()

        return nested

    def remove(self, pb):

        self.vbox.remove(pb)

        if len(self.vbox.get_children()) == 0: # If there is nothing to show, don't leave a ghost window here

             self.destroy()

class PasswordDialog(gtk.Dialog):

    """ Prompt the user for a password. """

    def __init__(self, prompt):

        gtk.Dialog.__init__(self)

        label = gtk.Label(prompt)

        self.vbox.pack_start(label, padding=10)

        self.entry = gtk.Entry()

        self.entry.set_visibility(False)

        self.vbox.pack_end(self.entry, padding=10)

        self.vbox.show_all()

        self.add_buttons(gtk.STOCK_OK, gtk.RESPONSE_OK, gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL)

    def _get_passwd(self):

        return self.entry.get_text()

    passwd = property(_get_passwd)

class GtkUIFactory(UIFactory):

    """A UI factory for GTK user interfaces."""

    def __init__(self,

                 stdout=None,

                 stderr=None):

        """Create a GtkUIFactory.

        """

        super(GtkUIFactory, self).__init__()

        self._progress_bar_stack = None

    def get_boolean(self, prompt):

        """GtkDialog with yes/no answers"""

        dialog = PromptDialog(prompt)

        response = dialog.run()

        dialog.destroy()

        return (response == gtk.RESPONSE_YES)

    def get_password(self, prompt='', **kwargs):

        """Prompt the user for a password.

        :param prompt: The prompt to present the user

        :param kwargs: Arguments which will be expanded into the prompt.

                       This lets front ends display different things if

                       they so choose.

        :return: The password string, return None if the user 

                 canceled the request.

        """

        dialog = PasswordDialog(prompt % kwargs)

        response = dialog.run()

        passwd = dialog.passwd

        dialog.destroy()

        if response == gtk.RESPONSE_OK:

            return passwd

        else:

            return None

    def nested_progress_bar(self):

        """Return a nested progress bar.

        """

        if self._progress_bar_stack is None:

            self._progress_bar_stack = GtkProgressBarStack()

        return self._progress_bar_stack.get_nested()

    def set_progress_bar_vbox(self, vbox):

        """Change the vbox to put progress bars in.

        """

        self._progress_bar_stack = vbox

    def clear_term(self):

        """Prepare the terminal for output.

        It has no sense when talking about GTK."""

        pass