class Many2OneEditor(CustomEditor):
"""Widget for editing many 2 one relations"""
arrow_down_key_pressed = QtCore.qt_signal()
class CompletionsModel(QtCore.QAbstractListModel):
def __init__(self, parent=None):
QtCore.QAbstractListModel.__init__(self, parent)
self._completions = []
def setCompletions(self, completions):
self._completions = completions
self.layoutChanged.emit()
def data(self, index, role):
return py_to_variant(self._completions[index.row()].get(role))
def rowCount(self, index=None):
return len(self._completions)
def columnCount(self, index=None):
return 1
def __init__(self,
admin=None,
parent=None,
editable=True,
field_name='manytoone',
actions=[
field_action.ClearObject(),
field_action.SelectObject(),
field_action.NewObject(),
field_action.OpenObject()
],
**kwargs):
"""
:param entity_admin : The Admin interface for the object on the one
side of the relation
"""
CustomEditor.__init__(self, parent)
self.setSizePolicy(QtGui.QSizePolicy.Preferred,
QtGui.QSizePolicy.Fixed)
self.setObjectName(field_name)
self.admin = admin
self.new_value = None
self._entity_representation = ''
self.obj = None
self._last_highlighted_entity_getter = None
self.layout = QtWidgets.QHBoxLayout()
self.layout.setSpacing(0)
self.layout.setContentsMargins(0, 0, 0, 0)
# Search input
self.search_input = DecoratedLineEdit(self)
self.search_input.setPlaceholderText(_('Search...'))
self.search_input.textEdited.connect(self.textEdited)
self.search_input.set_minimum_width(20)
self.search_input.arrow_down_key_pressed.connect(
self.on_arrow_down_key_pressed)
# suppose garbage was entered, we need to refresh the content
self.search_input.editingFinished.connect(
self.search_input_editing_finished)
self.setFocusProxy(self.search_input)
# Search Completer
self.completer = QtGui.QCompleter()
self.completions_model = self.CompletionsModel(self.completer)
self.completer.setModel(self.completions_model)
self.completer.setCaseSensitivity(Qt.CaseInsensitive)
self.completer.setCompletionMode(
QtGui.QCompleter.UnfilteredPopupCompletion)
self.completer.activated[QtCore.QModelIndex].connect(
self.completionActivated)
self.completer.highlighted[QtCore.QModelIndex].connect(
self.completion_highlighted)
self.search_input.setCompleter(self.completer)
# Setup layout
self.layout.addWidget(self.search_input)
self.setLayout(self.layout)
self.add_actions(actions, self.layout)
get_signal_handler().connect_signals(self)
def set_field_attributes(self, **kwargs):
super(Many2OneEditor, self).set_field_attributes(**kwargs)
set_background_color_palette(self.search_input,
kwargs.get('background_color'))
self.search_input.setToolTip(kwargs.get('tooltip') or '')
self.search_input.setEnabled(kwargs.get('editable', False))
self.update_actions()
def on_arrow_down_key_pressed(self):
self.arrow_down_key_pressed.emit()
def textEdited(self, text):
self._last_highlighted_entity_getter = None
text = six.text_type(self.search_input.text())
def create_search_completion(text):
return lambda: self.search_completions(text)
post(create_search_completion(six.text_type(text)),
self.display_search_completions)
self.completer.complete()
def search_completions(self, text):
"""Search for object that match text, to fill the list of completions
:return: a list of tuples of (dict_of_object_representation, object)
"""
search_decorator = create_entity_search_query_decorator(
self.admin, text)
if search_decorator:
sresult = [
self.admin.get_search_identifiers(e)
for e in search_decorator(self.admin.get_query()).limit(20)
]
return text, sresult
return text, []
def display_search_completions(self, prefix_and_completions):
assert object_thread(self)
prefix, completions = prefix_and_completions
self.completions_model.setCompletions(completions)
self.completer.setCompletionPrefix(prefix)
self.completer.complete()
def completionActivated(self, index):
obj = index.data(Qt.EditRole)
self.set_object(variant_to_py(obj))
def completion_highlighted(self, index):
obj = index.data(Qt.EditRole)
self._last_highlighted_entity_getter = variant_to_py(obj)
@QtCore.qt_slot(object, object)
def handle_entity_update(self, sender, entity):
if entity is self.get_value():
self.set_object(entity, False)
@QtCore.qt_slot(object, object)
def handle_entity_delete(self, sender, entity):
if entity is self.get_value():
self.set_object(None, False)
@QtCore.qt_slot(object, object)
def handle_entity_create(self, sender, entity):
if entity is self.new_value:
self.new_value = None
self.set_object(entity)
def search_input_editing_finished(self):
if self.obj is None:
# Only try to 'guess' what the user meant when no entity is set
# to avoid inappropriate removal of data, (eg when the user presses
# Esc, editingfinished will be called as well, and we should not
# overwrite the current entity set)
if self._last_highlighted_entity_getter:
self.set_object(self._last_highlighted_entity_getter)
elif self.completions_model.rowCount() == 1:
# There is only one possible option
index = self.completions_model.index(0, 0)
entity_getter = variant_to_py(index.data(Qt.EditRole))
self.set_object(entity_getter)
self.search_input.setText(self._entity_representation or u'')
def set_value(self, value):
""":param value: either ValueLoading, or a function that returns None
or the entity to be shown in the editor"""
self._last_highlighted_entity_getter = None
self.new_value = None
value = CustomEditor.set_value(self, value)
self.set_object(value, propagate=False)
self.update_actions()
def get_value(self):
""":return: a function that returns the selected entity or ValueLoading
or None"""
value = CustomEditor.get_value(self)
if value is not None:
return value
return self.obj
@QtCore.qt_slot(tuple)
def set_instance_representation(self, representation_and_propagate):
"""Update the gui"""
(desc, propagate) = representation_and_propagate
self._entity_representation = desc
self.search_input.setText(desc or u'')
if propagate:
self.editingFinished.emit()
def set_object(self, obj, propagate=True):
self.obj = obj
def get_instance_representation(obj, propagate):
"""Get a representation of the instance"""
if obj is not None:
return (self.admin.get_verbose_object_name(obj), propagate)
return (None, propagate)
post(
update_wrapper(
partial(get_instance_representation, obj, propagate),
get_instance_representation), self.set_instance_representation)
selected_object = property(fset=set_object)
def __init__(self,
parent=None,
editable=True,
nullable=True,
field_name='date',
validator=DateValidator(),
**kwargs):
CustomEditor.__init__(self, parent)
self.setSizePolicy(QtGui.QSizePolicy.Preferred,
QtGui.QSizePolicy.Fixed)
self.setObjectName(field_name)
self.date_format = local_date_format()
line_edit = DecoratedLineEdit()
line_edit.setValidator(validator)
line_edit.setObjectName('date_line_edit')
line_edit.set_minimum_width(
six.text_type(
QtCore.QDate(2000, 12, 22).toString(self.date_format)))
line_edit.setPlaceholderText(
QtCore.QDate(2000, 1, 1).toString(self.date_format))
# The order of creation of this widgets and their parenting
# seems very sensitive under windows and creates system crashes
# so don't change this without extensive testing on windows
special_date_menu = QtWidgets.QMenu(self)
calendar_widget_action = QtWidgets.QWidgetAction(special_date_menu)
self.calendar_widget = QtGui.QCalendarWidget(special_date_menu)
self.calendar_widget.activated.connect(self.calendar_widget_activated)
self.calendar_widget.clicked.connect(self.calendar_widget_activated)
calendar_widget_action.setDefaultWidget(self.calendar_widget)
self.calendar_action_trigger.connect(special_date_menu.hide)
special_date_menu.addAction(calendar_widget_action)
special_date_menu.addAction(_('Today'))
special_date_menu.addAction(_('Far future'))
self.special_date = QtWidgets.QToolButton(self)
self.special_date.setIcon(self.special_date_icon.getQIcon())
self.special_date.setAutoRaise(True)
self.special_date.setToolTip(_('Calendar and special dates'))
self.special_date.setMenu(special_date_menu)
self.special_date.setPopupMode(QtWidgets.QToolButton.InstantPopup)
self.special_date.setFixedHeight(self.get_height())
self.special_date.setFocusPolicy(Qt.ClickFocus)
# end of sensitive part
if nullable:
special_date_menu.addAction(_('Clear'))
self.hlayout = QtWidgets.QHBoxLayout()
self.hlayout.addWidget(line_edit)
self.hlayout.addWidget(self.special_date)
self.hlayout.setContentsMargins(0, 0, 0, 0)
self.hlayout.setSpacing(0)
self.hlayout.setAlignment(Qt.AlignRight | Qt.AlignVCenter)
self.setContentsMargins(0, 0, 0, 0)
self.setLayout(self.hlayout)
self.minimum = datetime.date.min
self.maximum = datetime.date.max
self.setFocusProxy(line_edit)
line_edit.editingFinished.connect(self.line_edit_finished)
special_date_menu.triggered.connect(self.set_special_date)
