ocarina/src/core/session.py

#! /usr/bin/python

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__author__="bjschuma"
__date__ ="$Feb 17, 2010 9:18:50 PM$"


from bt.settings import Settings
from bt.alias import Alias
from bt.file import *
from bt.message import write
from bt import signal

global alias
#alias = Alias()

from manager import Manager

global settings
global manager


def getSession():
	path = settings["appdir"]
	mkdir(path)
	path = join(path,"session")
	mkdir(path)
	return path


def restore():
	write("Restoring session",1)
	path = getSession()
	write(path,2)
	# Load settings from file
	settings.load(path)
	# Load aliases from file
	alias.load(path)
	# Restore enabled plugins (new plugins are automatically disabled)
	enabled = fopen( join(path,"enabled") )
	if not enabled == None:
		for line in enabled:
			manager.enablePlugin(line.strip())
		enabled.close()
	# Enable everything if we don't have an enabled list
	else:
		for key in manager.disabled.keys():
			manager.enablePlugin(key)


def save():
	write("Saving session")
	path = getSession()
	write(path,2)
	# Find list of enabled plugins
	enabledList = manager.enabled.keys()
	# Shutdown plugins
	manager.shutdown()
	write(enabledList,2)
	# Record enabled plugins to a file
	enabled = fopen( join(path,"enabled"), 'w' )
	if not enabled == None:
		for plugin in enabledList:
			enabled.write(plugin+"\n")
	enabled.close()
	
	# Save aliases and settings
	alias.save(path)
	settings.save(path)



settings = Settings()
manager = Manager()
alias = Alias()
#print alias
# We want to restore settings as early as possible
settings.setdefaults()

signal.register("scion-plugins-loaded",restore,0)
signal.register("scion-end",save,0)