# -*- coding: utf-8 py-indent-offset: 4 -*-

#

#    Gedit devhelp plugin

#    Copyright (C) 2006 Imendio AB

#    Copyright (C) 2011 Red Hat, Inc.

#

#    Author: Richard Hult <richard@imendio.com>

#    Author: Dan Williams <dcbw@redhat.com>

#

#    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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

from gi.repository import GObject, Gio, Gtk, Gedit

import os

import gettext

class DevhelpAppActivatable(GObject.Object, Gedit.AppActivatable):

    app = GObject.Property(type=Gedit.App)

    def __init__(self):

        GObject.Object.__init__(self)

    def do_activate(self):

        self.app.add_accelerator("F2", "win.devhelp", None)

        # Translate actions below, hardcoding domain here to avoid complications now

        _ = lambda s: gettext.dgettext('devhelp', s)

        self.menu_ext = self.extend_menu("tools-section")

        item = Gio.MenuItem.new(_("Show API Documentation"), "win.devhelp")

        self.menu_ext.prepend_menu_item(item)

    def do_deactivate(self):

        self.app.remove_accelerator("win.devhelp", None)

        self.menu_ext = None

class DevhelpWindowActivatable(GObject.Object, Gedit.WindowActivatable):

    window = GObject.Property(type=Gedit.Window)

    def __init__(self):

        GObject.Object.__init__(self)

    def do_activate(self):

        action = Gio.SimpleAction(name="devhelp")

        action.connect('activate', lambda a, p: self.do_devhelp(self.window.get_active_document()))

        self.window.add_action(action)

    def do_deactivate(self):

        self.window.remove_action("devhelp")

    def do_update_state(self):

        self.window.lookup_action("devhelp").set_enabled(self.window.get_active_document() is not None)

    def _is_word_separator(self, c):

        return not (c.isalnum() or c == '_')

    def do_devhelp(self, document):

        # Get the word at the cursor

        start = document.get_iter_at_mark(document.get_insert())

        end = start.copy()

        # If just after a word, move back into it

        c = start.get_char()

        if self._is_word_separator(c):

            start.backward_char()

        # Go backward

        while True:

            c = start.get_char()

            if not self._is_word_separator(c):

                if not start.backward_char():

                    break

            else:

                start.forward_char()

                break

        # Go forward

        while True:

            c = end.get_char()

            if not self._is_word_separator(c):

                if not end.forward_char():

                    break

            else:

                break

        if end.compare(start) > 0:

            text = document.get_text(start,end,False).strip()

            if text:

                # FIXME: We need a dbus interface for devhelp soon...

                os.spawnlp(os.P_NOWAIT, 'devhelp', 'devhelp', '-s', text)

# ex:ts=4:et: