def test_manager(self):
source = QObject()
target = QObject()
manager = BindingManager(submitPolicy=BindingManager.ManualSubmit)
manager.bind((target, "target"), None).to((source, "source"))
tbind = DynamicPropertyBinding(target, "target_copy")
sbind = DynamicPropertyBinding(source, "source")
schanged = []
sbind.changed[object].connect(schanged.append)
manager.bind(tbind, None).to(sbind)
source.setProperty("source", 1)
self.assertEqual(len(schanged), 1)
self.assertEqual(toPyObject(target.property("target")), None)
manager.commit()
self.assertEqual(toPyObject(target.property("target")), 1)
self.assertEqual(toPyObject(target.property("target_copy")), 1)
source.setProperty("source", 2)
manager.setSubmitPolicy(BindingManager.AutoSubmit)
self.assertEqual(toPyObject(target.property("target")), 2)
self.assertEqual(toPyObject(target.property("target_copy")), 2)
def test_expr(self):
obj1 = QObject()
obj1.setProperty("value", 1)
obj1.setProperty("other", 2)
result = DynamicPropertyBinding(obj1, "result")
result.bindTo(
PropertyBindingExpr(
"value + other",
locals={"value": binding_for(obj1, "value"),
"other": binding_for(obj1, "other")}
)
)
expr = PropertyBindingExpr(
"True if value < 3 else False",
dict(value=DynamicPropertyBinding(obj1, "result"))
)
result_values = []
result.changed[object].connect(result_values.append)
expr_values = []
expr.changed[object].connect(expr_values.append)
self.assertEqual(result.get(), 3)
self.assertEqual(expr.get(), False)
obj1.setProperty("value", 0)
self.assertEqual(result_values[-1], 2)
self.assertEqual(expr_values[-1], True)
self.assertEqual(result.get(), 2)
self.assertEqual(expr.get(), True)
def test_dyn(self):
obj = QObject()
changed = []
binding = DynamicPropertyBinding(obj, "test")
binding.changed[object].connect(changed.append)
self.assertIs(binding.get(), None)
obj.setProperty("test", 1)
self.assertEqual(binding.get(), 1)
self.assertEqual(len(changed), 1)
self.assertEqual(changed[-1], 1)
binding.set(2)
self.assertEqual(binding.get(), 2)
self.assertEqual(len(changed), 2)
self.assertEqual(changed[-1], 2)
target = QObject()
binding1 = DynamicPropertyBinding(target, "prop")
binding1.bindTo(binding)
self.assertEqual(binding1.get(), binding.get())
self.assertEqual(target.property("prop"), 2)
binding.set("a string")
self.assertEqual(binding1.get(), "a string")
self.assertEqual(binding1.get(), binding.get())
self.assertEqual(target.property("prop"), "a string")
binding1.unbind()
binding.set(1)
self.assertEqual(binding1.get(), "a string")
self.assertEqual(target.property("prop"), "a string")
self.assertEqual(binding.get(), 1)
self.assertEqual(obj.property("test"), 1)