def test_uml_associations(self):
from zope import component
from gaphor.UML.interfaces import IAssociationChangeEvent
from gaphor.UML.properties import association, derivedunion
from gaphor.UML import Element
class A(Element):
is_unlinked = False
def unlink(self):
self.is_unlinked = True
Element.unlink(self)
A.a1 = association('a1', A, upper=1)
A.a2 = association('a2', A, upper=1)
A.b1 = association('b1', A, upper='*')
A.b2 = association('b2', A, upper='*')
A.b3 = association('b3', A, upper=1)
A.derived_a = derivedunion('derived_a', 0, 1, A.a1, A.a2)
A.derived_b = derivedunion('derived_b', 0, '*', A.b1, A.b2, A.b3)
events = []
@component.adapter(IAssociationChangeEvent)
def handler(event, events=events):
events.append(event)
compreg = Application.get_service('component_registry')
compreg.register_handler(handler)
try:
a = A()
undo_manager = UndoManager()
undo_manager.init(Application)
undo_manager.begin_transaction()
a.a1 = A()
undo_manager.commit_transaction()
assert len(events) == 1, events
assert events[0].property is A.a1
assert undo_manager.can_undo()
undo_manager.undo_transaction()
assert not undo_manager.can_undo()
assert undo_manager.can_redo()
assert len(events) == 2, events
assert events[1].property is A.a1
finally:
compreg.unregister_handler(handler)
undo_manager.shutdown()
def test_uml_associations(self):
from gaphor.UML.event import AssociationUpdated
from gaphor.UML.properties import association, derivedunion
from gaphor.UML import Element
event_manager = EventManager()
undo_manager = UndoManager(event_manager)
element_factory = ElementFactory(event_manager)
class A(Element):
is_unlinked = False
def unlink(self):
self.is_unlinked = True
Element.unlink(self)
A.a1 = association("a1", A, upper=1)
A.a2 = association("a2", A, upper=1)
A.b1 = association("b1", A, upper="*")
A.b2 = association("b2", A, upper="*")
A.b3 = association("b3", A, upper=1)
A.derived_a = derivedunion(A, "derived_a", 0, 1, A.a1, A.a2)
A.derived_b = derivedunion(A, "derived_b", 0, "*", A.b1, A.b2, A.b3)
events = []
@event_handler(AssociationUpdated)
def handler(event, events=events):
events.append(event)
event_manager.subscribe(handler)
try:
a = element_factory.create(A)
undo_manager.begin_transaction()
a.a1 = element_factory.create(A)
undo_manager.commit_transaction()
assert len(events) == 1, events
assert events[0].property is A.a1
assert undo_manager.can_undo()
undo_manager.undo_transaction()
assert not undo_manager.can_undo()
assert undo_manager.can_redo()
assert len(events) == 2, events
assert events[1].property is A.a1
finally:
event_manager.unsubscribe(handler)
undo_manager.shutdown()
def test_uml_associations(self):
from gaphor.UML.event import AssociationChangeEvent
from gaphor.UML.properties import association, derivedunion
from gaphor.UML import Element
class A(Element):
is_unlinked = False
def unlink(self):
self.is_unlinked = True
Element.unlink(self)
A.a1 = association("a1", A, upper=1)
A.a2 = association("a2", A, upper=1)
A.b1 = association("b1", A, upper="*")
A.b2 = association("b2", A, upper="*")
A.b3 = association("b3", A, upper=1)
A.derived_a = derivedunion("derived_a", 0, 1, A.a1, A.a2)
A.derived_b = derivedunion("derived_b", 0, "*", A.b1, A.b2, A.b3)
events = []
@event_handler(AssociationChangeEvent)
def handler(event, events=events):
events.append(event)
em = Application.get_service("event_manager")
em.subscribe(handler)
try:
a = A(factory=self.element_factory)
undo_manager = UndoManager()
undo_manager.init(Application)
undo_manager.begin_transaction()
a.a1 = A(factory=self.element_factory)
undo_manager.commit_transaction()
assert len(events) == 1, events
assert events[0].property is A.a1
assert undo_manager.can_undo()
undo_manager.undo_transaction()
assert not undo_manager.can_undo()
assert undo_manager.can_redo()
assert len(events) == 2, events
assert events[1].property is A.a1
finally:
em.unsubscribe(handler)
undo_manager.shutdown()
def test_uml_associations(self):
from gaphor.UML.event import AssociationChangeEvent
from gaphor.UML.properties import association, derivedunion
from gaphor.UML import Element
class A(Element):
is_unlinked = False
def unlink(self):
self.is_unlinked = True
Element.unlink(self)
A.a1 = association("a1", A, upper=1)
A.a2 = association("a2", A, upper=1)
A.b1 = association("b1", A, upper="*")
A.b2 = association("b2", A, upper="*")
A.b3 = association("b3", A, upper=1)
A.derived_a = derivedunion("derived_a", 0, 1, A.a1, A.a2)
A.derived_b = derivedunion("derived_b", 0, "*", A.b1, A.b2, A.b3)
events = []
@event_handler(AssociationChangeEvent)
def handler(event, events=events):
events.append(event)
compreg = Application.get_service("component_registry")
compreg.register_handler(handler)
try:
a = A(factory=self.element_factory)
undo_manager = UndoManager()
undo_manager.init(Application)
undo_manager.begin_transaction()
a.a1 = A(factory=self.element_factory)
undo_manager.commit_transaction()
assert len(events) == 1, events
assert events[0].property is A.a1
assert undo_manager.can_undo()
undo_manager.undo_transaction()
assert not undo_manager.can_undo()
assert undo_manager.can_redo()
assert len(events) == 2, events
assert events[1].property is A.a1
finally:
compreg.unregister_handler(handler)
undo_manager.shutdown()
def test_uml_associations(self):
from zope import component
from gaphor.UML.interfaces import IAssociationChangeEvent
from gaphor.UML.properties import association, derivedunion
from gaphor.UML import Element
class A(Element):
is_unlinked = False
def unlink(self):
self.is_unlinked = True
Element.unlink(self)
A.a1 = association('a1', A, upper=1)
A.a2 = association('a2', A, upper=1)
A.b1 = association('b1', A, upper='*')
A.b2 = association('b2', A, upper='*')
A.b3 = association('b3', A, upper=1)
A.derived_a = derivedunion('derived_a', 0, 1, A.a1, A.a2)
A.derived_b = derivedunion('derived_b', 0, '*', A.b1, A.b2, A.b3)
events = []
@component.adapter(IAssociationChangeEvent)
def handler(event, events=events):
events.append(event)
compreg = Application.get_service('component_registry')
compreg.register_handler(handler)
try:
a = A()
undo_manager = UndoManager()
undo_manager.init(Application)
undo_manager.begin_transaction()
a.a1 = A()
undo_manager.commit_transaction()
assert len(events) == 1, events
assert events[0].property is A.a1
assert undo_manager.can_undo()
undo_manager.undo_transaction()
assert not undo_manager.can_undo()
assert undo_manager.can_redo()
assert len(events) == 2, events
assert events[1].property is A.a1
finally:
compreg.unregister_handler(handler)
undo_manager.shutdown()
def test_derivedunion():
class A(Element):
pass
A.a = association("a", A)
A.b = association("b", A, 0, 1)
A.u = derivedunion(A, "u", object, 0, "*", A.a, A.b)
a = A()
assert len(a.a) == 0, f"a.a = {a.a}"
assert len(a.u) == 0, f"a.u = {a.u}"
a.a = b = A()
a.a = c = A()
assert len(a.a) == 2, f"a.a = {a.a}"
assert b in a.a
assert c in a.a
assert len(a.u) == 2, f"a.u = {a.u}"
assert b in a.u
assert c in a.u
a.b = d = A()
assert len(a.a) == 2, f"a.a = {a.a}"
assert b in a.a
assert c in a.a
assert d == a.b
assert len(a.u) == 3, f"a.u = {a.u}"
assert b in a.u
assert c in a.u
assert d in a.u
def test_derivedunion_notify():
class A(Element):
pass
class E(Element):
notified = False
def notify(self, name, pspec):
if name == "u":
self.notified = True
E.a = association("a", A)
E.u = derivedunion(E, "u", A, 0, "*", E.a)
e = E()
assert e.notified is False
e.a = A()
assert e.notified is True
def test_derivedunion_notify_for_single_derived_property():
class A(Element):
pass
class E(Element):
notified = False
def handle(self, event):
if event.property is E.u:
self.notified = True
E.a = association("a", A)
E.u = derivedunion(E, "u", A, 0, "*", E.a)
e = E()
e.a = A()
assert e.notified is True
def test_derivedunion_listmixins():
class A(Element):
pass
A.a = association("a", A)
A.b = association("b", A)
A.u = derivedunion(A, "u", A, 0, "*", A.a, A.b)
A.name = attribute("name", str, "default")
a = A()
a.a = A()
a.a = A()
a.b = A()
a.a[0].name = "foo"
a.a[1].name = "bar"
a.b[0].name = "baz"
assert list(a.a[:].name) == ["foo", "bar"]
assert sorted(list(a.u[:].name)) == ["bar", "baz", "foo"]
def test_derivedunion_events():
from gaphor.UML.event import DerivedAdded, DerivedDeleted
class A(Element):
is_unlinked = False
def unlink(self):
self.is_unlinked = True
Element.unlink(self)
A.a1 = association("a1", A, upper=1)
A.a2 = association("a2", A, upper=1)
A.b1 = association("b1", A, upper="*")
A.b2 = association("b2", A, upper="*")
A.b3 = association("b3", A, upper=1)
A.derived_a = derivedunion(A, "derived_a", object, 0, 1, A.a1, A.a2)
A.derived_b = derivedunion(A, "derived_b", object, 0, "*", A.b1, A.b2,
A.b3)
events = []
@event_handler(AssociationUpdated)
def handler(event, events=events):
events.append(event)
Application.register_handler(handler)
try:
a = A()
a.a1 = A()
assert len(events) == 2
assert events[0].property is A.derived_a
assert events[1].property is A.a1
assert a.derived_a is a.a1
a.a1 = A()
assert len(events) == 4, len(events)
assert a.derived_a is a.a1
a.a2 = A()
# Should not emit DerivedSet
assert len(events) == 5, len(events)
assert events[4].property is A.a2
del events[:]
old_a1 = a.a1
del a.a1
assert len(events) == 2, len(events)
assert events[0].property is A.derived_a
assert events[0].new_value is a.a2, "{} {} {}".format(
a.a1, a.a2, events[3].new_value)
assert events[0].old_value is old_a1, "{} {} {}".format(
a.a1, a.a2, events[3].old_value)
assert events[1].property is A.a1
del events[:]
old_a2 = a.a2
del a.a2
assert len(events) == 2, len(events)
assert events[0].property is A.derived_a
assert events[0].new_value is None, "{} {} {}".format(
a.a1, a.a2, events[5].new_value)
assert events[0].old_value is old_a2, "{} {} {}".format(
a.a1, a.a2, events[5].old_value)
assert events[1].property is A.a2
del events[:]
assert len(events) == 0, len(events)
a.b1 = A()
assert len(events) == 2
assert events[0].property is A.derived_b
assert events[1].property is A.b1
a.b2 = A()
assert len(events) == 4
assert events[2].property is A.derived_b
assert events[3].property is A.b2
a.b2 = A()
assert len(events) == 6
assert events[4].property is A.derived_b
assert events[5].property is A.b2
a.b3 = A()
assert len(events) == 8, len(events)
assert events[6].property is A.derived_b
assert events[7].property is A.b3
# Add b3's value to b2, should not emit derived union event
a.b2 = a.b3
assert len(events) == 9, len(events)
assert events[8].property is A.b2
# Remove b3's value to b2
del a.b2[a.b3]
assert len(events) == 10, len(events)
assert events[9].property is A.b2
a.b3 = A()
assert len(events) == 13, len(events)
assert events[10].property is A.derived_b
assert isinstance(events[10], DerivedDeleted), type(events[10])
assert events[11].property is A.derived_b
assert isinstance(events[11], DerivedAdded), type(events[11])
assert events[12].property is A.b3
del a.b3
assert len(events) == 15, len(events)
assert events[13].property is A.derived_b
assert isinstance(events[13], DerivedDeleted), type(events[10])
assert events[14].property is A.b3
finally:
Application.unregister_handler(handler)
ReceiveSignalEvent.signal = association("signal", Signal, lower=1, upper=1)
# 23: override MultiplicityElement.lower derives MultiplicityElement.lowerValue
MultiplicityElement.lower = derived(
"lower", object, 0, 1, MultiplicityElement.lowerValue
)
MultiplicityElement.lower.filter = lambda obj: [obj.lowerValue]
# MultiplicityElement.lower = MultiplicityElement.lowerValue
# 28: override MultiplicityElement.upper derives MultiplicityElement.upperValue
MultiplicityElement.upper = derived(
"upper", object, 0, 1, MultiplicityElement.upperValue
)
MultiplicityElement.upper.filter = lambda obj: [obj.upperValue]
# MultiplicityElement.upper = MultiplicityElement.upperValue
# 127: override Property.isComposite derives Property.aggregation
# Property.isComposite = property(lambda self: self.aggregation == 'composite')
Property.isComposite = derivedunion("isComposite", bool, 0, 1, Property.aggregation)
Property.isComposite.filter = lambda obj: [obj.aggregation == "composite"]
RedefinableElement.redefinedElement = derivedunion(
"redefinedElement",
RedefinableElement,
0,
"*",
Property.redefinedProperty,
Classifier.redefinedClassifier,
Operation.redefinedOperation,
Interface.redefinedInterface,
Behavior.redefinedBehavior,
Connector.redefinedConnector,
)
Classifier.attribute = derivedunion(
"attribute",