File: general.py

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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.

"""
Keyboard shortcuts settings page.
"""


from PyQt5.QtCore import QSettings
from PyQt5.QtWidgets import (QCheckBox, QComboBox, QGridLayout, QHBoxLayout,
                             QLabel, QRadioButton, QStyleFactory, QVBoxLayout)

import app
import appinfo
import icons
import preferences
import sessions
import util
import po
import remote
import language_names

from widgets.urlrequester import UrlRequester


class GeneralPrefs(preferences.ScrolledGroupsPage):
    def __init__(self, dialog):
        super(GeneralPrefs, self).__init__(dialog)

        layout = QVBoxLayout()
        self.scrolledWidget.setLayout(layout)
        
        layout.addWidget(General(self))
        layout.addWidget(SavingDocument(self))
        layout.addWidget(NewDocument(self))
        layout.addWidget(StartSession(self))
        layout.addWidget(ExperimentalFeatures(self))


class General(preferences.Group):
    def __init__(self, page):
        super(General, self).__init__(page)
        
        grid = QGridLayout()
        self.setLayout(grid)
        
        self.langLabel = QLabel()
        self.lang = QComboBox(currentIndexChanged=self.changed)
        grid.addWidget(self.langLabel, 0, 0)
        grid.addWidget(self.lang, 0, 1)
        
        self.styleLabel = QLabel()
        self.styleCombo = QComboBox(currentIndexChanged=self.changed)
        grid.addWidget(self.styleLabel, 1, 0)
        grid.addWidget(self.styleCombo, 1, 1)
        
        self.systemIcons = QCheckBox(toggled=self.changed)
        grid.addWidget(self.systemIcons, 2, 0, 1, 3)
        self.tabsClosable = QCheckBox(toggled=self.changed)
        grid.addWidget(self.tabsClosable, 3, 0, 1, 3)
        self.splashScreen = QCheckBox(toggled=self.changed)
        grid.addWidget(self.splashScreen, 4, 0, 1, 3)
        self.allowRemote = QCheckBox(toggled=self.changed)
        grid.addWidget(self.allowRemote, 5, 0, 1, 3)
        
        grid.setColumnStretch(2, 1)
        
        # fill in the language combo
        self._langs = ["C", ""]
        self.lang.addItems(('', ''))
        langnames = [(language_names.languageName(lang, lang), lang) for lang in po.available()]
        langnames.sort()
        for name, lang in langnames:
            self._langs.append(lang)
            self.lang.addItem(name)
        
        # fill in style combo
        self.styleCombo.addItem('')
        self.styleCombo.addItems(QStyleFactory.keys())
        
        app.translateUI(self)
    
    def loadSettings(self):
        s = QSettings()
        lang = s.value("language", "", str)
        try:
            index = self._langs.index(lang)
        except ValueError:
            index = 1
        self.lang.setCurrentIndex(index)
        style = s.value("guistyle", "", str).lower()
        styles = [name.lower() for name in QStyleFactory.keys()]
        try:
            index = styles.index(style) + 1
        except ValueError:
            index = 0
        self.styleCombo.setCurrentIndex(index)
        self.systemIcons.setChecked(s.value("system_icons", True, bool))
        self.tabsClosable.setChecked(s.value("tabs_closable", True, bool))
        self.splashScreen.setChecked(s.value("splash_screen", True, bool))
        self.allowRemote.setChecked(remote.enabled())
    
    def saveSettings(self):
        s = QSettings()
        s.setValue("language", self._langs[self.lang.currentIndex()])
        s.setValue("system_icons", self.systemIcons.isChecked())
        s.setValue("tabs_closable", self.tabsClosable.isChecked())
        s.setValue("splash_screen", self.splashScreen.isChecked())
        s.setValue("allow_remote", self.allowRemote.isChecked())
        if self.styleCombo.currentIndex() == 0:
            s.remove("guistyle")
        else:
            s.setValue("guistyle", self.styleCombo.currentText())
        
    def translateUI(self):
        self.setTitle(_("General Preferences"))
        self.langLabel.setText(_("Language:"))
        self.lang.setItemText(0, _("No Translation"))
        self.lang.setItemText(1, _("System Default Language (if available)"))
        self.styleLabel.setText(_("Style:"))
        self.styleCombo.setItemText(0, _("Default"))
        self.systemIcons.setText(_("Use System Icons"))
        self.systemIcons.setToolTip(_(
            "If checked, icons of the desktop icon theme "
            "will be used instead of the bundled icons.\n"
            "This setting takes effect on the next start of {appname}.").format(appname=appinfo.appname))
        self.splashScreen.setText(_("Show Splash Screen on Startup"))
        self.tabsClosable.setText(_("Show Close Button on Document tabs"))
        self.allowRemote.setText(_("Open Files in Running Instance"))
        self.allowRemote.setToolTip(_(
            "If checked, files will be opened in a running Frescobaldi "
            "application if available, instead of starting a new instance."))


class StartSession(preferences.Group):
    def __init__(self, page):
        super(StartSession, self).__init__(page)
        
        grid = QGridLayout()
        self.setLayout(grid)
        
        def changed():
            self.changed.emit()
            self.combo.setEnabled(self.custom.isChecked())
        
        self.none = QRadioButton(toggled=changed)
        self.lastused = QRadioButton(toggled=changed)
        self.custom = QRadioButton(toggled=changed)
        self.combo = QComboBox(currentIndexChanged=changed)
        
        grid.addWidget(self.none, 0, 0, 1, 2)
        grid.addWidget(self.lastused, 1, 0, 1, 2)
        grid.addWidget(self.custom, 2, 0, 1, 1)
        grid.addWidget(self.combo, 2, 1, 1, 1)

        app.translateUI(self)
        
    def translateUI(self):
        self.setTitle(_("Session to load if Frescobaldi is started without arguments"))
        self.none.setText(_("Start with no session"))
        self.lastused.setText(_("Start with last used session"))
        self.custom.setText(_("Start with session:"))
        
    def loadSettings(self):
        s = QSettings()
        s.beginGroup("session")
        startup = s.value("startup", "none", str)
        if startup ==  "lastused":
            self.lastused.setChecked(True)
        elif startup == "custom":
            self.custom.setChecked(True)
        else:
            self.none.setChecked(True)
        sessionNames = sessions.sessionNames()
        self.combo.clear()
        self.combo.addItems(sessionNames)
        custom = s.value("custom", "", str)
        if custom in sessionNames:
            self.combo.setCurrentIndex(sessionNames.index(custom))

    def saveSettings(self):
        s = QSettings()
        s.beginGroup("session")
        s.setValue("custom", self.combo.currentText())
        if self.custom.isChecked():
            startup = "custom"
        elif self.lastused.isChecked():
            startup = "lastused"
        else:
            startup = "none"
        s.setValue("startup", startup)


class SavingDocument(preferences.Group):
    def __init__(self, page):
        super(SavingDocument, self).__init__(page)
        
        layout = QVBoxLayout()
        self.setLayout(layout)
        
        self.stripwsp = QCheckBox(toggled=self.changed)
        self.backup = QCheckBox(toggled=self.changed)
        self.metainfo = QCheckBox(toggled=self.changed)
        layout.addWidget(self.stripwsp)
        layout.addWidget(self.backup)
        layout.addWidget(self.metainfo)
        
        hbox = QHBoxLayout()
        layout.addLayout(hbox)
        
        self.basedirLabel = l = QLabel()
        self.basedir = UrlRequester()
        hbox.addWidget(self.basedirLabel)
        hbox.addWidget(self.basedir)
        self.basedir.changed.connect(self.changed)
        app.translateUI(self)
        
    def translateUI(self):
        self.setTitle(_("When saving documents"))
        self.stripwsp.setText(_("Strip trailing whitespace"))
        self.stripwsp.setToolTip(_(
            "If checked, Frescobaldi will remove unnecessary whitespace at the "
            "end of lines (but not inside multi-line strings)."))
        self.backup.setText(_("Keep backup copy"))
        self.backup.setToolTip(_(
            "Frescobaldi always backups a file before overwriting it "
            "with a new version.\n"
            "If checked those backup copies are retained."))
        self.metainfo.setText(_("Remember cursor position, bookmarks, etc."))
        self.basedirLabel.setText(_("Default directory:"))
        self.basedirLabel.setToolTip(_("The default folder for your LilyPond documents (optional)."))
        
    def loadSettings(self):
        s = QSettings()
        self.stripwsp.setChecked(s.value("strip_trailing_whitespace", False, bool))
        self.backup.setChecked(s.value("backup_keep", False, bool))
        self.metainfo.setChecked(s.value("metainfo", True, bool))
        self.basedir.setPath(s.value("basedir", "", str))
        
    def saveSettings(self):
        s = QSettings()
        s.setValue("strip_trailing_whitespace", self.stripwsp.isChecked())
        s.setValue("backup_keep", self.backup.isChecked())
        s.setValue("metainfo", self.metainfo.isChecked())
        s.setValue("basedir", self.basedir.path())


class NewDocument(preferences.Group):
    def __init__(self, page):
        super(NewDocument, self).__init__(page)
        
        grid = QGridLayout()
        self.setLayout(grid)
        
        def changed():
            self.changed.emit()
            self.combo.setEnabled(self.template.isChecked())
        
        self.emptyDocument = QRadioButton(toggled=changed)
        self.lilyVersion = QRadioButton(toggled=changed)
        self.template = QRadioButton(toggled=changed)
        self.combo = QComboBox(currentIndexChanged=changed)
        
        grid.addWidget(self.emptyDocument, 0, 0, 1, 2)
        grid.addWidget(self.lilyVersion, 1, 0, 1, 2)
        grid.addWidget(self.template, 2, 0, 1, 1)
        grid.addWidget(self.combo, 2, 1, 1, 1)
        self.loadCombo()
        app.translateUI(self)
        
    def translateUI(self):
        self.setTitle(_("When creating new documents"))
        self.emptyDocument.setText(_("Create an empty document"))
        self.lilyVersion.setText(_("Create a document that contains the LilyPond version statement"))
        self.template.setText(_("Create a document from a template:"))
        from snippet import snippets
        for i, name in enumerate(self._names):
            self.combo.setItemText(i, snippets.title(name))
    
    def loadCombo(self):
        from snippet import snippets
        self._names = [name for name in snippets.names()
                        if snippets.get(name).variables.get('template')]
        self.combo.clear()
        self.combo.addItems([''] * len(self._names))
        
    def loadSettings(self):
        s = QSettings()
        ndoc = s.value("new_document", "empty", str)
        template = s.value("new_document_template", "", str)
        if template in self._names:
            self.combo.setCurrentIndex(self._names.index(template))
        if ndoc == "template":
            self.template.setChecked(True)
        elif ndoc == "version":
            self.lilyVersion.setChecked(True)
        else:
            self.emptyDocument.setChecked(True)

    def saveSettings(self):
        s = QSettings()
        if self._names and self.template.isChecked():
            s.setValue("new_document", "template")
            s.setValue("new_document_template", self._names[self.combo.currentIndex()])
        elif self.lilyVersion.isChecked():
            s.setValue("new_document", "version")
        else:
            s.setValue("new_document", "empty")


class ExperimentalFeatures(preferences.Group):
    def __init__(self, page):
        super(ExperimentalFeatures, self).__init__(page)
        
        layout = QVBoxLayout()
        self.setLayout(layout)
        
        self.experimentalFeatures = QCheckBox(toggled=self.changed)
        layout.addWidget(self.experimentalFeatures)
        app.translateUI(self)
        
    def translateUI(self):
        self.setTitle(_("Experimental Features"))
        self.experimentalFeatures.setText(_("Enable Experimental Features"))
        self.experimentalFeatures.setToolTip('<qt>' + _(
            "If checked, features that are not yet finished are enabled.\n"
            "You need to restart Frescobaldi to see the changes."))
    
    def loadSettings(self):
        s = QSettings()
        self.experimentalFeatures.setChecked(s.value("experimental-features", False, bool))
        
    def saveSettings(self):
        s = QSettings()
        s.setValue("experimental-features", self.experimentalFeatures.isChecked())