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import six
from .customeditor import AbstractCustomEditor
from ....core.qt import QtCore, QtWidgets, py_to_variant, variant_to_py
[docs]class LanguageEditor(QtWidgets.QComboBox, AbstractCustomEditor):
"""A ComboBox that shows a list of languages, the editor takes
as its value the ISO code of the language"""
editingFinished = QtCore.qt_signal()
language_choices = []
def __init__(self, parent=None, languages=[], field_name='language', **kwargs):
"""
:param languages: a list of ISO codes with languages
that are allowed in the combo box, if the list is empty, all languages
are allowed (the default)
"""
QtWidgets.QComboBox.__init__(self, parent)
AbstractCustomEditor.__init__(self)
self.setObjectName( field_name )
self.index_by_language = dict()
languages = [QtCore.QLocale(lang).language() for lang in languages]
if not self.language_choices:
for i in range(QtCore.QLocale.C, QtCore.QLocale.Chewa + 1):
if languages and (i not in languages):
continue
language = QtCore.QLocale.Language(i)
language_name = six.text_type(QtCore.QLocale.languageToString(language))
self.language_choices.append( (language, language_name ) )
self.language_choices.sort(key=lambda x:x[1])
for i, (language, language_name) in enumerate( self.language_choices ):
self.addItem( language_name, py_to_variant(language) )
self.index_by_language[ language ] = i
self.activated.connect( self._activated )
@QtCore.qt_slot(int)
def _activated(self, _index):
self.editingFinished.emit()
def set_field_attributes(self, **kwargs):
super(LanguageEditor, self).set_field_attributes(**kwargs)
self.setEnabled(kwargs.get('editable', False))
def set_value(self, value):
value = AbstractCustomEditor.set_value(self, value)
if value:
locale = QtCore.QLocale( value )
self.setCurrentIndex( self.index_by_language[locale.language()] )
def get_value(self):
current_index = self.currentIndex()
if current_index >= 0:
language = variant_to_py(self.itemData(self.currentIndex()))
locale = QtCore.QLocale( language )
value = six.text_type( locale.name() )
else:
value = None
return AbstractCustomEditor.get_value(self) or value