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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.
"""
Place snippets in menu.
If a snippet defines the variable 'menu' it is placed in the menu, sorted
on its internal action name and grouped by the value of the 'menu' variable.
If a snippet defines the variable 'template' it is placed in File->New from
template, sorted on its action name and grouped by the value of the 'template'
variable.
TODO:
- provide submenus
- caching (keep actions alive?)
"""
from PyQt5.QtCore import Qt, QUrl
from PyQt5.QtWidgets import QMenu
import app
import document
import qutil
import panelmanager
class SnippetMenuBase(QMenu):
def __init__(self, parent=None):
super(SnippetMenuBase, self).__init__(parent)
self.aboutToShow.connect(self.populate)
self.aboutToHide.connect(self.clearMenu, Qt.QueuedConnection)
self.triggered.connect(self.slotTriggered)
app.translateUI(self)
def mainwindow(self):
return self.parent().window()
def tool(self):
"""Returns the snippets tool."""
return panelmanager.manager(self.mainwindow()).snippettool
def populate(self):
"""Populates the menu with snippet actions."""
self.clearMenu() # on some systems aboutToHide does not fire...
from . import model, snippets, actions
last = self.insertBeforeAction()
shortcuts = self.tool().snippetActions
groups = {}
for name in sorted(model.model().names()):
variables = snippets.get(name).variables
group = self.snippetGroup(variables)
if group:
action = actions.action(name, self.mainwindow(), shortcuts)
self.visitAction(action, variables)
groups.setdefault(group, []).append(action)
for group in sorted(groups, key=lambda g: '' if g is True else g):
for action in groups[group]:
self.insertAction(last, action)
self.insertSeparator(last)
qutil.addAccelerators(self.actions())
def insertBeforeAction(self):
"""Should return an action to insert out stuff before, or None."""
return None
def snippetGroup(self, variables):
"""Should a group name if the snippet is to appear in the menu."""
def visitAction(self, action, variables):
"""May change the action depending on variables."""
def clearMenu(self):
"""Should delete the inserted actions."""
for a in self.actions():
self.removeAction(a)
a.deleteLater()
def slotTriggered(self, action):
"""Called when an action is triggered."""
name = action.objectName()
if name:
self.applySnippet(name)
def applySnippet(self, name):
"""Applies the named snippet."""
from . import insert
view = self.mainwindow().currentView()
view.setFocus()
insert.insert(name, view)
class SnippetMenu(SnippetMenuBase):
def __init__(self, parent=None):
super(SnippetMenu, self).__init__(parent)
self.addAction(self.tool().actionCollection.snippettool_activate)
def translateUI(self):
self.setTitle(_("menu title", "Sn&ippets"))
def insertBeforeAction(self):
return self.actions()[-1]
def snippetGroup(self, variables):
return variables.get('menu')
def visitAction(self, action, variables):
if 'yes' in variables.get('selection', ''):
action.setEnabled(self.mainwindow().hasSelection())
def clearMenu(self):
"""Deletes the actions on menu hide, excepts the "Snippets..." action."""
for a in self.actions()[:-1]:
self.removeAction(a)
a.deleteLater()
class TemplateMenu(SnippetMenuBase):
def __init__(self, parent=None):
super(TemplateMenu, self).__init__(parent)
self.addAction(self.tool().actionCollection.templates_manage)
def translateUI(self):
self.setTitle(_("New from &Template"))
def insertBeforeAction(self):
return self.actions()[-1]
def snippetGroup(self, variables):
return variables.get('template')
def applySnippet(self, name):
d = app.openUrl(QUrl())
self.mainwindow().setCurrentDocument(d)
super(TemplateMenu, self).applySnippet(name)
d.setUndoRedoEnabled(False)
d.setUndoRedoEnabled(True) # d.clearUndoRedoStacks() only in Qt >= 4.7
d.setModified(False)
from . import snippets
if 'template-run' in snippets.get(name).variables:
import engrave
engrave.engraver(self.mainwindow()).engrave('preview', d)
def clearMenu(self):
"""Deletes the actions on menu hide, except "Manage templates..."."""
for a in self.actions()[:-1]:
self.removeAction(a)
a.deleteLater()
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