terminator/terminatorlib/window.py

#!/usr/bin/python
# Terminator by Chris Jones <cmsj@tenshu.net>
# GPL v2 only
"""window.py - class for the main Terminator window"""

import copy
import time
import uuid
import gi
from gi.repository import GObject
from gi.repository import Gtk, Gdk
from gi.repository import Keybinder

from util import dbg, err, make_uuid
import util
from translation import _
from version import APP_NAME
from container import Container
from factory import Factory
from terminator import Terminator

try:
    from gi.repository import Keybinder
except ImportError:
    err('Warning: python-keybinder is not installed. This means the \
hide_window shortcut will be unavailable')

# pylint: disable-msg=R0904
class Window(Container, Gtk.Window):
    """Class implementing a top-level Terminator window"""

    terminator = None
    title = None
    isfullscreen = None
    ismaximised = None
    hidebound = None
    hidefunc = None
    losefocus_time = 0
    position = None
    ignore_startup_show = None
    set_pos_by_ratio = None
    last_active_term = None

    zoom_data = None

    term_zoomed = False
    __gproperties__ = {
            'term_zoomed': (GObject.TYPE_BOOLEAN,
                            'terminal zoomed',
                            'whether the terminal is zoomed',
                            False,
                            GObject.PARAM_READWRITE)
    }

    def __init__(self):
        """Class initialiser"""
        self.terminator = Terminator()
        self.terminator.register_window(self)

        Container.__init__(self)
        GObject.GObject.__init__(self)
        GObject.type_register(Window)
        self.register_signals(Window)

#        self.set_property('allow-shrink', True)  # FIXME FOR GTK3, or do we need this actually?
        icon_to_apply=''

        self.register_callbacks()
        self.apply_config()

        self.title = WindowTitle(self)
        self.title.update()

        options = self.config.options_get()
        if options:
            if options.forcedtitle:
                self.title.force_title(options.forcedtitle)

            if options.role:
                self.set_role(options.role)
            
            if options.classname is not None:
                self.set_wmclass(options.classname, self.wmclass_class)
            
            if options.forcedicon is not None:
                icon_to_apply = options.forcedicon

            if options.geometry:
                if not self.parse_geometry(options.geometry):
                    err('Window::__init__: Unable to parse geometry: %s' % 
                            options.geometry)

        self.apply_icon(icon_to_apply)
        self.pending_set_rough_geometry_hint = False

    def do_get_property(self, prop):
        """Handle gobject getting a property"""
        if prop.name in ['term_zoomed', 'term-zoomed']:
            return(self.term_zoomed)
        else:
            raise AttributeError('unknown property %s' % prop.name)

    def do_set_property(self, prop, value):
        """Handle gobject setting a property"""
        if prop.name in ['term_zoomed', 'term-zoomed']:
            self.term_zoomed = value
        else:
            raise AttributeError('unknown property %s' % prop.name)

    def register_callbacks(self):
        """Connect the GTK+ signals we care about"""
        self.connect('key-press-event', self.on_key_press)
        self.connect('button-press-event', self.on_button_press)
        self.connect('delete_event', self.on_delete_event)
        self.connect('destroy', self.on_destroy_event)
        self.connect('window-state-event', self.on_window_state_changed)
        self.connect('focus-out-event', self.on_focus_out)
        self.connect('focus-in-event', self.on_focus_in)

        # Attempt to grab a global hotkey for hiding the window.
        # If we fail, we'll never hide the window, iconifying instead.
        if self.config['keybindings']['hide_window'] != None:
            try:
                self.hidebound = Keybinder.bind(
                    self.config['keybindings']['hide_window'],
                    self.on_hide_window)
            except (KeyError, NameError):
                pass

            if not self.hidebound:
                err('Unable to bind hide_window key, another instance/window has it.')
                self.hidefunc = self.iconify
            else:
                self.hidefunc = self.hide

    def apply_config(self):
        """Apply various configuration options"""
        options = self.config.options_get()
        maximise = self.config['window_state'] == 'maximise'
        fullscreen = self.config['window_state'] == 'fullscreen'
        hidden = self.config['window_state'] == 'hidden'
        borderless = self.config['borderless']
        skiptaskbar = self.config['hide_from_taskbar']
        alwaysontop = self.config['always_on_top']
        sticky = self.config['sticky']

        if options:
            if options.maximise:
                maximise = True
            if options.fullscreen:
                fullscreen = True
            if options.hidden:
                hidden = True
            if options.borderless:
                borderless = True

        self.set_fullscreen(fullscreen)
        self.set_maximised(maximise)
        self.set_borderless(borderless)
        self.set_always_on_top(alwaysontop)
        self.set_real_transparency()
        self.set_sticky(sticky)
        if self.hidebound:
            self.set_hidden(hidden)
            self.set_skip_taskbar_hint(skiptaskbar)
        else:
            self.set_iconified(hidden)

    def apply_icon(self, requested_icon):
        """Set the window icon"""
        icon_theme = Gtk.IconTheme()
        icon = None
        
        if requested_icon:
            try:
                self.set_icon_from_file(requested_icon)
                icon = self.get_icon()
            except (NameError, GObject.GError):
                dbg('Unable to load 48px %s icon as file' % (repr(requested_icon)))
        
        if requested_icon and icon is None:
            try:
                icon = icon_theme.load_icon(requested_icon, 48, 0)
            except (NameError, GObject.GError):
                dbg('Unable to load 48px %s icon' % (repr(requested_icon)))
        
#        if icon is None:
#            try:
#                icon = icon_theme.load_icon(self.wmclass_name, 48, 0)  # FIXME FOR GTK3
#            except (NameError, GObject.GError):
#                dbg('Unable to load 48px %s icon' % (self.wmclass_name))
        
        if icon is None:
            try:
                icon = icon_theme.load_icon(APP_NAME, 48, 0)
            except (NameError, GObject.GError):
                dbg('Unable to load 48px Terminator icon')
                icon = self.render_icon(Gtk.STOCK_DIALOG_INFO, Gtk.IconSize.BUTTON)

        self.set_icon(icon)

    def on_key_press(self, window, event):
        """Handle a keyboard event"""
        maker = Factory()

        self.set_urgency_hint(False)

        mapping = self.terminator.keybindings.lookup(event)

        if mapping:
            dbg('Window::on_key_press: looked up %r' % mapping)
            if mapping == 'full_screen':
                self.set_fullscreen(not self.isfullscreen)
            elif mapping == 'close_window':
                if not self.on_delete_event(window,
                        Gdk.Event(Gdk.DELETE)):
                    self.on_destroy_event(window,
                            Gdk.Event(Gdk.DESTROY))
            elif mapping == 'new_tab':
                self.tab_new(self.get_focussed_terminal())
            else:
                return(False)
            return(True)

    def on_button_press(self, window, event):
        """Handle a mouse button event. Mainly this is just a clean way to
        cancel any urgency hints that are set."""
        self.set_urgency_hint(False)
        return(False)

    def on_focus_out(self, window, event):
        """Focus has left the window"""
        for terminal in self.get_visible_terminals():
            terminal.on_window_focus_out()

        self.losefocus_time = time.time()
        if self.config['hide_on_lose_focus'] and self.get_property('visible'):
            self.position = self.get_position()
            self.hidefunc()

    def on_focus_in(self, window, event):
        """Focus has entered the window"""
        self.set_urgency_hint(False)
        if not self.terminator.doing_layout:
            self.terminator.last_active_window = self.uuid
        # FIXME: Cause the terminal titlebars to update here

    def is_child_notebook(self):
        """Returns True if this Window's child is a Notebook"""
        maker = Factory()
        return(maker.isinstance(self.get_child(), 'Notebook'))

    def tab_new(self, widget=None, debugtab=False, _param1=None, _param2=None):
        """Make a new tab"""
        cwd = None
        profile = None

        if self.get_property('term_zoomed') == True:
            err("You can't create a tab while a terminal is maximised/zoomed")
            return

        if widget:
            cwd = widget.get_cwd()
            profile = widget.get_profile()

        maker = Factory()
        if not self.is_child_notebook():
            dbg('Making a new Notebook')
            notebook = maker.make('Notebook', window=self)
        return self.get_child().newtab(debugtab, cwd=cwd, profile=profile)

    def on_delete_event(self, window, event, data=None):
        """Handle a window close request"""
        maker = Factory()
        if maker.isinstance(self.get_child(), 'Terminal'):
            dbg('Window::on_delete_event: Only one child, closing is fine')
            return(False)
        elif maker.isinstance(self.get_child(), 'Container'):
            return(self.confirm_close(window, _('window')))
        else:
            dbg('unknown child: %s' % self.get_child())

    def confirm_close(self, window, type):
        """Display a confirmation dialog when the user is closing multiple
        terminals in one window"""
        
        return(not (self.construct_confirm_close(window, type) == Gtk.ResponseType.ACCEPT))

    def on_destroy_event(self, widget, data=None):
        """Handle window destruction"""
        dbg('destroying self')
        for terminal in self.get_visible_terminals():
            terminal.close()
        self.cnxids.remove_all()
        self.terminator.deregister_window(self)
        self.destroy()
        del(self)

    def on_hide_window(self, data=None):
        """Handle a request to hide/show the window"""

        if not self.get_property('visible'):
            #Don't show if window has just been hidden because of
            #lost focus
            if (time.time() - self.losefocus_time < 0.1) and \
                self.config['hide_on_lose_focus']:
                return
            if self.position:
                self.move(self.position[0], self.position[1])
            self.show()
            self.grab_focus()
            try:
                t = GdkX11.x11_get_server_time(self.window)
            except AttributeError:
                t = 0
            self.window.focus(t)
        else:
            self.position = self.get_position()
            self.hidefunc()

    # pylint: disable-msg=W0613
    def on_window_state_changed(self, window, event):
        """Handle the state of the window changing"""
        self.isfullscreen = bool(event.new_window_state & 
                                 Gdk.WindowState.FULLSCREEN)
        self.ismaximised = bool(event.new_window_state &
                                 Gdk.WindowState.MAXIMIZED)
        dbg('Window::on_window_state_changed: fullscreen=%s, maximised=%s' \
                % (self.isfullscreen, self.ismaximised))

        return(False)

    def set_maximised(self, value):
        """Set the maximised state of the window from the supplied value"""
        if value == True:
            self.maximize()
        else:
            self.unmaximize()

    def set_fullscreen(self, value):
        """Set the fullscreen state of the window from the supplied value"""
        if value == True:
            self.fullscreen()
        else:
            self.unfullscreen()

    def set_borderless(self, value):
        """Set the state of the window border from the supplied value"""
        self.set_decorated (not value)

    def set_hidden(self, value):
        """Set the visibility of the window from the supplied value"""
        if value == True:
            self.ignore_startup_show = True
        else:
            self.ignore_startup_show = False

    def set_iconified(self, value):
        """Set the minimised state of the window from the supplied value"""
        if value == True:
            self.iconify()

    def set_always_on_top(self, value):
        """Set the always on top window hint from the supplied value"""
        self.set_keep_above(value)

    def set_sticky(self, value):
        """Set the sticky hint from the supplied value"""
        if value == True:
            self.stick()

    def set_real_transparency(self, value=True):
        """Enable RGBA if supported on the current screen"""
        if self.is_composited() == False:
            value = False

        screen = self.get_screen()
        if value:
            dbg('setting rgba visual')
            visual = screen.get_rgba_visual()
            if visual:
                self.set_visual(visual)
    
    def show(self, startup=False):
        """Undo the startup show request if started in hidden mode"""
        #Present is necessary to grab focus when window is hidden from taskbar.
        #It is important to call present() before show(), otherwise the window
        #won't be brought to front if an another application has the focus.
        #Last note: present() will implicitly call Gtk.Window.show()
        self.present()

        #Window must be shown, then hidden for the hotkeys to be registered
        if (self.ignore_startup_show and startup == True):
            self.position = self.get_position()
            self.hide()


    def add(self, widget, metadata=None):
        """Add a widget to the window by way of Gtk.Window.add()"""
        maker = Factory()
        Gtk.Window.add(self, widget)
        if maker.isinstance(widget, 'Terminal'):
            signals = {'close-term': self.closeterm,
                       'title-change': self.title.set_title,
                       'split-horiz': self.split_horiz,
                       'split-vert': self.split_vert,
                       'unzoom': self.unzoom,
                       'tab-change': self.tab_change,
                       'group-all': self.group_all,
                       'group-all-toggle': self.group_all_toggle,
                       'ungroup-all': self.ungroup_all,
                       'group-tab': self.group_tab,
                       'group-tab-toggle': self.group_tab_toggle,
                       'ungroup-tab': self.ungroup_tab,
                       'move-tab': self.move_tab,
                       'tab-new': [self.tab_new, widget],
                       'navigate': self.navigate_terminal}

            for signal in signals:
                args = []
                handler = signals[signal]
                if isinstance(handler, list):
                    args = handler[1:]
                    handler = handler[0]
                self.connect_child(widget, signal, handler, *args)

            widget.grab_focus()

    def remove(self, widget):
        """Remove our child widget by way of Gtk.Window.remove()"""
        Gtk.Window.remove(self, widget)
        self.disconnect_child(widget)
        return(True)

    def get_children(self):
        """Return a single list of our child"""
        children = []
        children.append(self.get_child())
        return(children)

    def hoover(self):
        """Ensure we still have a reason to exist"""
        if not self.get_child():
            self.emit('destroy')

    def closeterm(self, widget):
        """Handle a terminal closing"""
        Container.closeterm(self, widget)
        self.hoover()

    def split_axis(self, widget, vertical=True, cwd=None, sibling=None, widgetfirst=True):
        """Split the window"""
        if self.get_property('term_zoomed') == True:
            err("You can't split while a terminal is maximised/zoomed")
            return

        order = None
        maker = Factory()
        self.remove(widget)

        if vertical:
            container = maker.make('VPaned')
        else:
            container = maker.make('HPaned')
        
        self.set_pos_by_ratio = True

        if not sibling:
            sibling = maker.make('Terminal')
            sibling.set_cwd(cwd)
            sibling.spawn_child()
            if widget.group and self.config['split_to_group']:
                sibling.set_group(None, widget.group)
        if self.config['always_split_with_profile']:
            sibling.force_set_profile(None, widget.get_profile())

        self.add(container)
        container.show_all()

        order = [widget, sibling]
        if widgetfirst is False:
            order.reverse()

        for term in order:
            container.add(term)
        container.show_all()
        sibling.grab_focus()
        
        while Gtk.events_pending():
            Gtk.main_iteration_do(False)
        self.set_pos_by_ratio = False


    def zoom(self, widget, font_scale=True):
        """Zoom a terminal widget"""
        children = self.get_children()

        if widget in children:
            # This widget is a direct child of ours and we're a Window
            # so zooming is a no-op
            return

        self.zoom_data = widget.get_zoom_data()
        self.zoom_data['widget'] = widget
        self.zoom_data['old_child'] = children[0]
        self.zoom_data['font_scale'] = font_scale

        self.remove(self.zoom_data['old_child'])
        self.zoom_data['old_parent'].remove(widget)
        self.add(widget)
        self.set_property('term_zoomed', True)

        if font_scale:
            widget.cnxids.new(widget, 'size-allocate', 
                    widget.zoom_scale, self.zoom_data)

        widget.grab_focus()

    def unzoom(self, widget):
        """Restore normal terminal layout"""
        if not self.get_property('term_zoomed'):
            # We're not zoomed anyway
            dbg('Window::unzoom: not zoomed, no-op')
            return

        widget = self.zoom_data['widget']
        if self.zoom_data['font_scale']:
            widget.vte.set_font(self.zoom_data['old_font'])

        self.remove(widget)
        self.add(self.zoom_data['old_child'])
        self.zoom_data['old_parent'].add(widget)
        widget.grab_focus()
        self.zoom_data = None
        self.set_property('term_zoomed', False)

    def rotate(self, widget, clockwise):
        """Rotate children in this window"""
        self.set_pos_by_ratio = True
        maker = Factory()
        # collect all paned children in breadth-first order
        paned = []
        for child in self.get_children():
            if maker.isinstance(child, 'Paned'):
                paned.append(child)
        for p in paned:
            for child in p.get_children():
                if child not in paned and maker.isinstance(child, 'Paned'):
                    paned.append(child)
        # then propagate the rotation
        for p in paned:
            p.rotate(widget, clockwise)
        self.show_all()
        widget.grab_focus()
        
        while Gtk.events_pending():
            Gtk.main_iteration_do(False)
        self.set_pos_by_ratio = False

    def get_visible_terminals(self):
        """Walk down the widget tree to find all of the visible terminals.
        Mostly using Container::get_visible_terminals()"""
        terminals = {}
        if not hasattr(self, 'cached_maker'):
            self.cached_maker = Factory()
        maker = self.cached_maker
        child = self.get_child()

        if not child:
            return([])

        # If our child is a Notebook, reset to work from its visible child
        if maker.isinstance(child, 'Notebook'):
            pagenum = child.get_current_page()
            child = child.get_nth_page(pagenum)

        if maker.isinstance(child, 'Container'):
            terminals.update(child.get_visible_terminals())
        elif maker.isinstance(child, 'Terminal'):
            terminals[child] = child.get_allocation()
        else:
            err('Unknown child type %s' % type(child))

        return(terminals)

    def get_focussed_terminal(self):
        """Find which terminal we want to have focus"""
        terminals = self.get_visible_terminals()
        for terminal in terminals:
            if terminal.vte.is_focus():
                return(terminal)
        return(None)

    def deferred_set_rough_geometry_hints(self):
        # no parameters are used in set_rough_geometry_hints, so we can
        # use the set_rough_geometry_hints
        if self.pending_set_rough_geometry_hint == True:
            return
        self.pending_set_rough_geometry_hint = True
        GObject.idle_add(self.do_deferred_set_rough_geometry_hints)

    def do_deferred_set_rough_geometry_hints(self):
        self.pending_set_rough_geometry_hint = False
        self.set_rough_geometry_hints()

    def set_rough_geometry_hints(self):
        """Walk all the terminals along the top and left edges to fake up how
        many columns/rows we sort of have"""
        if self.ismaximised == True:
            return
        if not hasattr(self, 'cached_maker'):
            self.cached_maker = Factory()
        maker = self.cached_maker
        if maker.isinstance(self.get_child(), 'Notebook'):
            dbg("We don't currently support geometry hinting with tabs")
            return

        terminals = self.get_visible_terminals()
        column_sum = 0
        row_sum = 0

        for terminal in terminals:
            rect = terminal.get_allocation()
            if rect.x == 0:
                cols, rows = terminal.get_size()
                row_sum = row_sum + rows
            if rect.y == 0:
                cols, rows = terminal.get_size()
                column_sum = column_sum + cols

        if column_sum == 0 or row_sum == 0:
            dbg('column_sum=%s,row_sum=%s. No terminals found in >=1 axis' %
                (column_sum, row_sum))
            return

        # FIXME: I don't think we should just use whatever font size info is on
        # the last terminal we inspected. Looking up the default profile font
        # size and calculating its character sizes would be rather expensive
        # though.
        font_width, font_height = terminal.get_font_size()
        total_font_width = font_width * column_sum
        total_font_height = font_height * row_sum

        win_width, win_height = self.get_size()
        extra_width = win_width - total_font_width
        extra_height = win_height - total_font_height

        dbg('setting geometry hints: (ewidth:%s)(eheight:%s),\
(fwidth:%s)(fheight:%s)' % (extra_width, extra_height, 
                            font_width, font_height))
        geometry = Gdk.Geometry()
        geometry.base_width = extra_width
        geometry.base_height = extra_height
        geometry.width_inc = font_width
        geometry.height_inc = font_height
        self.set_geometry_hints(self, geometry, Gdk.WindowHints.BASE_SIZE | Gdk.WindowHints.RESIZE_INC)

    def tab_change(self, widget, num=None):
        """Change to a specific tab"""
        if num is None:
            err('must specify a tab to change to')

        maker = Factory()
        child = self.get_child()

        if not maker.isinstance(child, 'Notebook'):
            dbg('child is not a notebook, nothing to change to')
            return

        if num == -1:
            # Go to the next tab
            cur = child.get_current_page()
            pages = child.get_n_pages()
            if cur == pages - 1:
                num = 0
            else:
                num = cur + 1
        elif num == -2:
            # Go to the previous tab
            cur = child.get_current_page()
            if cur > 0:
                num = cur - 1
            else:
                num = child.get_n_pages() - 1

        child.set_current_page(num)
        # Work around strange bug in gtk-2.12.11 and pygtk-2.12.1
        # Without it, the selection changes, but the displayed page doesn't
        # change
        child.set_current_page(child.get_current_page())

    def set_groups(self, new_group,  term_list):
        """Set terminals in term_list to new_group"""
        for terminal in term_list:
            terminal.set_group(None, new_group)
        self.terminator.focus_changed(self.terminator.last_focused_term)

    def group_all(self, widget):
        """Group all terminals"""
        # FIXME: Why isn't this being done by Terminator() ?
        group = _('All')
        self.terminator.create_group(group)
        self.set_groups(group, self.terminator.terminals)

    def group_all_toggle(self, widget):
        """Toggle grouping to all"""
        if widget.group == 'All':
            self.ungroup_all(widget)
        else:
            self.group_all(widget)

    def ungroup_all(self, widget):
        """Ungroup all terminals"""
        self.set_groups(None, self.terminator.terminals)

    def group_tab(self, widget):
        """Group all terminals in the current tab"""
        maker = Factory()
        notebook = self.get_child()

        if not maker.isinstance(notebook, 'Notebook'):
            dbg('not in a notebook, refusing to group tab')
            return

        pagenum = notebook.get_current_page()
        while True:
            group = _('Tab %d') % pagenum
            if group not in self.terminator.groups:
                break
            pagenum += 1
        self.set_groups(group, self.get_visible_terminals())

    def group_tab_toggle(self, widget):
        """Blah"""
        if widget.group and widget.group[:4] == 'Tab ':
            self.ungroup_tab(widget)
        else:
            self.group_tab(widget)

    def ungroup_tab(self, widget):
        """Ungroup all terminals in the current tab"""
        maker = Factory()
        notebook = self.get_child()

        if not maker.isinstance(notebook, 'Notebook'):
            dbg('note in a notebook, refusing to ungroup tab')
            return
        
        self.set_groups(None, self.get_visible_terminals())

    def move_tab(self, widget, direction):
        """Handle a keyboard shortcut for moving tab positions"""
        maker = Factory()
        notebook = self.get_child()

        if not maker.isinstance(notebook, 'Notebook'):
            dbg('not in a notebook, refusing to move tab %s' % direction)
            return

        dbg('moving tab %s' % direction)
        numpages = notebook.get_n_pages()
        page = notebook.get_current_page()
        child = notebook.get_nth_page(page)

        if direction == 'left':
            if page == 0:
                page = numpages
            else:
                page = page - 1
        elif direction == 'right':
            if page == numpages - 1:
                page = 0
            else:
                page = page + 1
        else:
            err('unknown direction: %s' % direction)
            return
        
        notebook.reorder_child(child, page)

    def navigate_terminal(self, terminal, direction):
        """Navigate around terminals"""
        _containers, terminals = util.enumerate_descendants(self)
        visibles = self.get_visible_terminals()
        current = terminals.index(terminal)
        length = len(terminals)
        next = None

        if length <= 1 or len(visibles) <= 1:
            return

        if direction in ['next', 'prev']:
            tmpterms = copy.copy(terminals)
            tmpterms = tmpterms[current+1:]
            tmpterms.extend(terminals[0:current])

            if direction == 'next':
                tmpterms.reverse()

            next = 0
            while len(tmpterms) > 0:
                tmpitem = tmpterms.pop()
                if tmpitem in visibles:
                    next = terminals.index(tmpitem)
                    break
        elif direction in ['left', 'right', 'up', 'down']:
            layout = self.get_visible_terminals()
            allocation = terminal.get_allocation()
            possibles = []

            # Get the co-ordinate of the appropriate edge for this direction
            edge = util.get_edge(allocation, direction)
            # Find all visible terminals which are, in their entirity, in the
            # direction we want to move
            for term in layout:
                rect = layout[term]
                if util.get_nav_possible(edge, rect, direction):
                    possibles.append(term)

            if len(possibles) == 0:
                return

            # Find out how far away each of the possible terminals is, then
            # find the smallest distance. The winning terminals are all of
            # those who are that distance away.
            offsets = {}
            for term in possibles:
                rect = layout[term]
                offsets[term] = util.get_nav_offset(edge, rect, direction)
            keys = offsets.values()
            keys.sort()
            winners = [k for k, v in offsets.iteritems() if v == keys[0]]
            next = terminals.index(winners[0])

            if len(winners) > 1:
                # Break an n-way tie using the cursor position
                term_alloc = terminal.get_allocation()
                cursor_x = term_alloc.x + term_alloc.width / 2
                cursor_y = term_alloc.y + term_alloc.height / 2

                for term in winners:
                    rect = layout[term]
                    if util.get_nav_tiebreak(direction, cursor_x, cursor_y,
                            rect):
                        next = terminals.index(term)
                        break;
        else:
            err('Unknown navigation direction: %s' % direction)

        if next is not None:
            terminals[next].grab_focus()

    def create_layout(self, layout):
        """Apply any config items from our layout"""
        if not layout.has_key('children'):
            err('layout describes no children: %s' % layout)
            return
        children = layout['children']
        if len(children) != 1:
            # We're a Window, we can only have one child
            err('incorrect number of children for Window: %s' % layout)
            return

        child = children[children.keys()[0]]
        terminal = self.get_children()[0]
        dbg('Making a child of type: %s' % child['type'])
        if child['type'] == 'VPaned':
            self.split_axis(terminal, True)
        elif child['type'] == 'HPaned':
            self.split_axis(terminal, False)
        elif child['type'] == 'Notebook':
            self.tab_new()
            i = 2
            while i < len(child['children']):
                self.tab_new()
                i = i + 1
        elif child['type'] == 'Terminal':
            pass
        else:
            err('unknown child type: %s' % child['type'])
            return

        self.get_children()[0].create_layout(child)

        if layout.has_key('last_active_term') and layout['last_active_term'] not in ['', None]:
            self.last_active_term = make_uuid(layout['last_active_term'])

        if layout.has_key('last_active_window') and layout['last_active_window'] == 'True':
            self.terminator.last_active_window = self.uuid

class WindowTitle(object):
    """Class to handle the setting of the window title"""

    window = None
    text = None
    forced = None

    def __init__(self, window):
        """Class initialiser"""
        self.window = window
        self.forced = False

    def set_title(self, widget, text):
        """Set the title"""
        if not self.forced:
            self.text = text
            self.update()

    def force_title(self, newtext):
        """Force a specific title"""
        if newtext:
            self.set_title(None, newtext)
            self.forced = True
        else:
            self.forced = False

    def update(self):
        """Update the title automatically"""
        title = None

        # FIXME: What the hell is this for?!
        if self.forced:
            title = self.text
        else:
            title = "%s" % self.text

        self.window.set_title(title)

# vim: set expandtab ts=4 sw=4: