public void Set2WayBindingsWithUpdateSourceEventInBindingObject()
{
var platformView = new MockPlatformView();
Assert.AreEqual(null, platformView.Baz);
var vm = new MockVMForPlatformBinding();
platformView.SetBindingContext(vm);
platformView.SetBinding("Baz", new Binding("FFoo", mode: BindingMode.TwoWay)
{
UpdateSourceEventName = "BazChanged"
});
Assert.AreEqual(null, platformView.Baz);
Assert.AreEqual(null, vm.FFoo);
platformView.Baz = "oof";
platformView.FireBazChanged();
Assert.AreEqual("oof", platformView.Baz);
Assert.AreEqual("oof", vm.FFoo);
vm.FFoo = "foo";
Assert.AreEqual("foo", platformView.Baz);
Assert.AreEqual("foo", vm.FFoo);
}
public void Set2WayBindings()
{
var platformView = new MockPlatformView();
Assert.AreEqual(null, platformView.Foo);
Assert.AreEqual(0, platformView.Bar);
var vm = new MockVMForPlatformBinding();
platformView.SetBindingContext(vm);
var inpc = new MockINPC();
platformView.SetBinding("Foo", new Binding("FFoo", mode: BindingMode.TwoWay), inpc);
platformView.SetBinding("Bar", new Binding("BBar", mode: BindingMode.TwoWay), inpc);
Assert.AreEqual(null, platformView.Foo);
Assert.AreEqual(0, platformView.Bar);
Assert.AreEqual(null, vm.FFoo);
Assert.AreEqual(0, vm.BBar);
platformView.Foo = "oof";
inpc.FireINPC(platformView, "Foo");
platformView.Bar = -42;
inpc.FireINPC(platformView, "Bar");
Assert.AreEqual("oof", platformView.Foo);
Assert.AreEqual(-42, platformView.Bar);
Assert.AreEqual("oof", vm.FFoo);
Assert.AreEqual(-42, vm.BBar);
vm.FFoo = "foo";
vm.BBar = 42;
Assert.AreEqual("foo", platformView.Foo);
Assert.AreEqual(42, platformView.Bar);
Assert.AreEqual("foo", vm.FFoo);
Assert.AreEqual(42, vm.BBar);
}
public void TestConverterDoesNotThrow()
{
var platformView = new MockPlatformView();
Assert.AreEqual(null, platformView.Foo);
Assert.AreEqual(0, platformView.Bar);
var vm = new MockVMForPlatformBinding();
var converter = new MockCustomColorConverter();
platformView.SetBinding("SelectedColor", new Binding("CColor", converter: converter));
Assert.DoesNotThrow(() => platformView.SetBindingContext(vm));
}
public void OneWayToSourceAppliedOnSetBC()
{
var platformView = new MockPlatformView {
Foo = "foobar"
};
platformView.SetBinding("Foo", new Binding("FFoo", BindingMode.OneWayToSource));
var vm = new MockVMForPlatformBinding {
FFoo = "qux"
};
platformView.SetBindingContext(vm);
Assert.AreEqual("foobar", vm.FFoo);
}
public void TestConverterWorks()
{
var platformView = new MockPlatformView();
Assert.AreEqual(null, platformView.Foo);
Assert.AreEqual(0, platformView.Bar);
var vm = new MockVMForPlatformBinding();
vm.CColor = Colors.Red;
var converter = new MockCustomColorConverter();
platformView.SetBinding("SelectedColor", new Binding("CColor", converter: converter));
platformView.SetBindingContext(vm);
Assert.AreEqual(vm.CColor, platformView.SelectedColor.FormsColor);
}
public void Binding2WayWithConvertersDoNotLoop()
{
var platformView = new MockPlatformView();
int count = 0;
platformView.SelectedColorChanged += (o, e) =>
{
if (++count > 5)
{
Assert.Fail("Probable loop detected");
}
};
var vm = new MockVMForPlatformBinding {
CColor = Colors.Red
};
platformView.SetBinding("SelectedColor", new Binding("CColor", BindingMode.TwoWay, new MockCustomColorConverter()), "SelectedColorChanged");
platformView.SetBindingContext(vm);
Assert.AreEqual(count, 1);
}
public void SetBindingContextToSubviews()
{
var platformView = new MockPlatformView {
SubViews = new List <MockPlatformView>()
};
var platformViewChild = new MockPlatformView();
platformViewChild.SetBinding("Foo", new Binding("FFoo", mode: BindingMode.OneWay));
platformViewChild.SetBinding("Bar", new Binding("BBar", mode: BindingMode.OneWay));
platformView.SubViews.Add(platformViewChild);
var vm = new MockVMForPlatformBinding();
platformView.SetBindingContext(vm, v => v.SubViews);
Assert.AreEqual(null, platformViewChild.Foo);
Assert.AreEqual(0, platformViewChild.Bar);
platformView.SetBindingContext(new { FFoo = "Foo", BBar = 42 }, v => v.SubViews);
Assert.AreEqual("Foo", platformViewChild.Foo);
Assert.AreEqual(42, platformViewChild.Bar);
}
public void TestConverter2WayWorks()
{
var platformView = new MockPlatformView();
Assert.AreEqual(null, platformView.Foo);
Assert.AreEqual(0, platformView.Bar);
var inpc = new MockINPC();
var vm = new MockVMForPlatformBinding();
vm.CColor = Colors.Red;
var converter = new MockCustomColorConverter();
platformView.SetBinding("SelectedColor", new Binding("CColor", BindingMode.TwoWay, converter), inpc);
platformView.SetBindingContext(vm);
Assert.AreEqual(vm.CColor, platformView.SelectedColor.FormsColor);
var newFormsColor = Colors.Blue;
var newColor = new MockPlatformColor(newFormsColor);
platformView.SelectedColor = newColor;
inpc.FireINPC(platformView, nameof(platformView.SelectedColor));
Assert.AreEqual(newFormsColor, vm.CColor);
}