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# This file is part of the Frescobaldi project, http://www.frescobaldi.org/
#
# Copyright (c) 2008 - 2014 by Wilbert Berendsen
#
# 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
# See http://www.gnu.org/licenses/ for more information.
"""
Stuff dealing with the QSessionManager.
"""
import os
import sys
from PyQt5.QtCore import QObject, QSettings, Qt, QUrl
from PyQt5.QtGui import QSessionManager
from PyQt5.QtWidgets import QApplication
import appinfo
import app
import mainwindow
def sessionSettings(key):
"""Returns the QSettings object for sessiondata of the specified key."""
settings = QSettings()
settings.beginGroup("sessiondata")
settings.beginGroup(key)
return settings
def commitData(sm):
"""Save a session on behalf of the session manager."""
if not sm.allowsInteraction():
pass # TODO: can implement saving unsaved/unnamed docs to cache buffers
sm.release()
key = sm.sessionKey()
saveSession(key)
def saveSession(key):
"""Save the current session under key."""
settings = sessionSettings(key)
## save current named session name
import sessions
settings.setValue('session_name', sessions.currentSession() or "")
## save the list of open documents
settings.setValue('numdocuments', len(app.documents))
for index, d in enumerate(app.documents):
settings.beginGroup("document{0}".format(index))
settings.setValue("url", d.url())
settings.endGroup()
## save windows
settings.setValue('numwindows', len(app.windows))
for index, win in enumerate(app.windows):
settings.beginGroup("mainwindow{0}".format(index))
win.writeSessionSettings(settings)
settings.setValue("active_document", win.currentDocument().url())
settings.endGroup()
settings.sync()
def restoreSession(key):
"""Restore a session specified by key, previously saved by the session manager."""
settings = sessionSettings(key)
## restore current named session name
session_name = settings.value('session_name', "", str)
if session_name:
import sessions
sessions.setCurrentSession(session_name)
## restore documents
numdocuments = settings.value('numdocuments', 0, int)
doc = None
for index in range(numdocuments):
settings.beginGroup("document{0}".format(index))
url = settings.value("url", QUrl(), QUrl)
if url.isEmpty():
import document
doc = document.Document()
else:
try:
doc = app.openUrl(url)
except IOError:
pass
settings.endGroup()
# open at least one
if doc is None:
doc = app.openUrl(QUrl())
## restore windows
numwindows = settings.value('numwindows', 0, int)
if numwindows > 0:
for index in range(numwindows):
settings.beginGroup("mainwindow{0}".format(index))
win = mainwindow.MainWindow()
win.readSessionSettings(settings)
win.show()
u = settings.value("active_document", QUrl(), QUrl)
# we don't use app.findDocument because it does not allow empty url
for d in app.documents:
if u == d.url():
win.setCurrentDocument(d)
break
else:
win.setCurrentDocument(app.documents[0])
settings.endGroup()
else:
win = mainwindow.MainWindow()
win.show()
@app.oninit
def _setup():
# the new-style way of connecting fails on PyQt5 4.8.x...
app.qApp.commitDataRequest.connect(commitData)
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