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#!/usr/bin/python
# Terminator by Chris Jones <cmsj@tenshu.net>
# GPL v2 only
"""container.py - classes necessary to contain Terminal widgets"""
import gobject
import gtk
from factory import Factory
from config import Config
from util import dbg, err
from translation import _
from signalman import Signalman
# pylint: disable-msg=R0921
class Container(object):
"""Base class for Terminator Containers"""
terminator = None
immutable = None
children = None
config = None
signals = None
signalman = None
def __init__(self):
"""Class initialiser"""
self.children = []
self.signals = []
self.cnxids = Signalman()
self.config = Config()
def register_signals(self, widget):
"""Register gobject signals in a way that avoids multiple inheritance"""
existing = gobject.signal_list_names(widget)
for signal in self.signals:
if signal['name'] in existing:
dbg('Container:: skipping signal %s for %s, already exists' % (
signal['name'], widget))
else:
dbg('Container:: registering signal for %s on %s' %
(signal['name'], widget))
try:
gobject.signal_new(signal['name'],
widget,
signal['flags'],
signal['return_type'],
signal['param_types'])
except RuntimeError:
err('Container:: registering signal for %s on %s failed' %
(signal['name'], widget))
def connect_child(self, widget, signal, handler, *args):
"""Register the requested signal and record its connection ID"""
self.cnxids.new(widget, signal, handler, *args)
return
def disconnect_child(self, widget):
"""De-register the signals for a child"""
self.cnxids.remove_widget(widget)
def get_offspring(self):
"""Return a list of direct child widgets, if any"""
return(self.children)
def split_horiz(self, widget, cwd=None):
"""Split this container horizontally"""
return(self.split_axis(widget, True, cwd))
def split_vert(self, widget, cwd=None):
"""Split this container vertically"""
return(self.split_axis(widget, False, cwd))
def split_axis(self, widget, vertical=True, cwd=None, sibling=None, siblinglast=None):
"""Default axis splitter. This should be implemented by subclasses"""
raise NotImplementedError('split_axis')
def add(self, widget):
"""Add a widget to the container"""
raise NotImplementedError('add')
def remove(self, widget):
"""Remove a widget from the container"""
raise NotImplementedError('remove')
def replace(self, oldwidget, newwidget):
"""Replace the child oldwidget with newwidget. This is the bare minimum
required for this operation. Containers should override it if they have
more complex requirements"""
if not oldwidget in self.get_children():
err('%s is not a child of %s' % (oldwidget, self))
return
self.remove(oldwidget)
self.add(newwidget)
def hoover(self):
"""Ensure we still have a reason to exist"""
raise NotImplementedError('hoover')
def get_children(self):
"""Return an ordered list of the children of this Container"""
raise NotImplementedError('get_children')
def closeterm(self, widget):
"""Handle the closure of a terminal"""
try:
if self.get_property('term_zoomed'):
# We're zoomed, so unzoom and then start closing again
dbg('Container::closeterm: terminal zoomed, unzooming')
self.unzoom(widget)
widget.close()
return(True)
except TypeError:
pass
if not self.remove(widget):
dbg('Container::closeterm: self.remove() failed for %s' % widget)
return(False)
self.terminator.deregister_terminal(widget)
self.terminator.group_hoover()
return(True)
def resizeterm(self, widget, keyname):
"""Handle a keyboard event requesting a terminal resize"""
raise NotImplementedError('resizeterm')
def toggle_zoom(self, widget, fontscale = False):
"""Toggle the existing zoom state"""
try:
if self.get_property('term_zoomed'):
self.unzoom(widget)
else:
self.zoom(widget, fontscale)
except TypeError:
err('Container::toggle_zoom: %s is unable to handle zooming, for \
%s' % (self, widget))
def zoom(self, widget, fontscale = False):
"""Zoom a terminal"""
raise NotImplementedError('zoom')
def unzoom(self, widget):
"""Unzoom a terminal"""
raise NotImplementedError('unzoom')
def construct_confirm_close(self, window, reqtype):
"""Create a confirmation dialog for closing things"""
dialog = gtk.Dialog(_('Close?'), window, gtk.DIALOG_MODAL)
dialog.set_has_separator(False)
dialog.set_resizable(False)
dialog.add_button(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT)
c_all = dialog.add_button(gtk.STOCK_CLOSE, gtk.RESPONSE_ACCEPT)
c_all.get_children()[0].get_children()[0].get_children()[1].set_label(
_('Close _Terminals'))
primary = gtk.Label(_('<big><b>Close multiple terminals?</b></big>'))
primary.set_use_markup(True)
primary.set_alignment(0, 0.5)
secondary = gtk.Label(_('This %s has several terminals open. Closing \
the %s will also close all terminals within it.') % (reqtype, reqtype))
secondary.set_line_wrap(True)
labels = gtk.VBox()
labels.pack_start(primary, False, False, 6)
labels.pack_start(secondary, False, False, 6)
image = gtk.image_new_from_stock(gtk.STOCK_DIALOG_WARNING,
gtk.ICON_SIZE_DIALOG)
image.set_alignment(0.5, 0)
box = gtk.HBox()
box.pack_start(image, False, False, 6)
box.pack_start(labels, False, False, 6)
dialog.vbox.pack_start(box, False, False, 12)
dialog.show_all()
return(dialog)
def propagate_title_change(self, widget, title):
"""Pass a title change up the widget stack"""
maker = Factory()
parent = self.get_parent()
title = widget.get_window_title()
if maker.isinstance(self, 'Notebook'):
self.update_tab_label_text(widget, title)
elif maker.isinstance(self, 'Window'):
self.title.set_title(widget, title)
if maker.isinstance(parent, 'Container'):
parent.propagate_title_change(widget, title)
def get_visible_terminals(self):
"""Walk the widget tree to find all of the visible terminals. That is,
any terminals which are not hidden in another Notebook pane"""
maker = Factory()
terminals = {}
for child in self.get_offspring():
if maker.isinstance(child, 'Terminal'):
terminals[child] = child.get_allocation()
elif maker.isinstance(child, 'Container'):
terminals.update(child.get_visible_terminals())
else:
err('Unknown child type %s' % type(child))
return(terminals)
def describe_layout(self, count, parent, global_layout, child_order):
"""Describe our current layout"""
layout = {}
maker = Factory()
mytype = maker.type(self)
if not mytype:
err('unable to detemine own type. %s' % self)
return({})
layout['type'] = mytype
layout['parent'] = parent
layout['order'] = child_order
if hasattr(self, 'get_position'):
position = self.get_position()
if hasattr(position, '__iter__'):
position = ':'.join([str(x) for x in position])
layout['position'] = position
if hasattr(self, 'get_size'):
layout['size'] = self.get_size()
name = 'child%d' % count
count = count + 1
global_layout[name] = layout
child_order = 0
for child in self.get_children():
if hasattr(child, 'describe_layout'):
count = child.describe_layout(count, name, global_layout, child_order)
child_order = child_order + 1
return(count)
def create_layout(self, layout):
"""Apply settings for our layout"""
raise NotImplementedError('create_layout')
# vim: set expandtab ts=4 sw=4:
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