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 PlatformViewsAreCollected()
{
WeakReference wr = null;
int i = 0;
Action create = null;
create = () =>
{
if (i++ < 1024)
{
create();
return;
}
var platformView = new MockPlatformView();
platformView.SetBinding("fooBar", new Binding("Foo", BindingMode.TwoWay));
platformView.SetBinding("Baz", new Binding("Qux", BindingMode.TwoWay), "BazChanged");
wr = new WeakReference(platformView);
platformView = null;
};
create();
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
Assert.False(wr.IsAlive);
}
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 ThrowsOnMissingProperty()
{
var platformView = new MockPlatformView();
platformView.SetBinding("Qux", new Binding("Foo"));
Assert.Throws <InvalidOperationException>(() => platformView.SetBindingContext(new { Foo = 42 }));
}
public void DoNotApplyNull()
{
var native = new MockPlatformView();
Assert.NotNull(native.CantBeNull);
native.SetBinding("CantBeNull", new Binding("FFoo", BindingMode.TwoWay));
Assert.NotNull(native.CantBeNull);
native.SetBindingContext(new { FFoo = "foo" });
Assert.AreEqual("foo", native.CantBeNull);
}
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 AttachedPropertiesAreTransferredFromTheBackpack()
{
var platformView = new MockPlatformView();
platformView.SetValue(Grid.ColumnProperty, 3);
platformView.SetBinding(Grid.RowProperty, new Binding("foo"));
var view = platformView.ToView();
view.BindingContext = new { foo = 42 };
Assert.AreEqual(3, view.GetValue(Grid.ColumnProperty));
Assert.AreEqual(42, view.GetValue(Grid.RowProperty));
}
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 SetOneWayBinding()
{
var platformView = new MockPlatformView();
Assert.AreEqual(null, platformView.Foo);
Assert.AreEqual(0, platformView.Bar);
platformView.SetBinding("Foo", new Binding("FFoo", mode: BindingMode.OneWay));
platformView.SetBinding("Bar", new Binding("BBar", mode: BindingMode.OneWay));
Assert.AreEqual(null, platformView.Foo);
Assert.AreEqual(0, platformView.Bar);
platformView.SetBindingContext(new { FFoo = "Foo", BBar = 42 });
Assert.AreEqual("Foo", platformView.Foo);
Assert.AreEqual(42, platformView.Bar);
}
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 ProxiesAreCollected()
{
WeakReference wr = null;
int i = 0;
Action create = null;
create = () =>
{
if (i++ < 1024)
{
create();
return;
}
var platformView = new MockPlatformView();
platformView.SetBinding("fooBar", new Binding("Foo", BindingMode.TwoWay));
platformView.SetBinding("Baz", new Binding("Qux", BindingMode.TwoWay), "BazChanged");
PlatformBindingHelpers.BindableObjectProxy <MockPlatformView> proxy;
if (!PlatformBindingHelpers.BindableObjectProxy <MockPlatformView> .BindableObjectProxies.TryGetValue(platformView, out proxy))
{
Assert.Fail();
}
wr = new WeakReference(proxy);
platformView = null;
};
create();
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
Assert.False(wr.IsAlive);
}
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);
}
public static void SetBinding(this MockPlatformView target, BindableProperty targetProperty, BindingBase binding)
{
PlatformBindingHelpers.SetBinding(target, targetProperty, binding);
}
public void ThrowsOnMissingEvent()
{
var platformView = new MockPlatformView();
Assert.Throws <ArgumentException>(() => platformView.SetBinding("Foo", new Binding("Foo", BindingMode.TwoWay), "missingEvent"));
}
public static void SetValue(this MockPlatformView target, BindableProperty targetProperty, object value)
{
PlatformBindingHelpers.SetValue(target, targetProperty, value);
}
internal static void TransferbindablePropertiesToWrapper(this MockPlatformView target, MockPlatformViewWrapper wrapper)
{
PlatformBindingHelpers.TransferBindablePropertiesToWrapper(target, wrapper);
}
public static void SetBindingContext(this MockPlatformView target, object bindingContext, Func <MockPlatformView, IEnumerable <MockPlatformView> > getChild = null)
{
PlatformBindingHelpers.SetBindingContext(target, bindingContext, getChild);
}
public static void SetBinding(this MockPlatformView target, string targetProperty, BindingBase binding, string updateSourceEventName = null)
{
PlatformBindingHelpers.SetBinding(target, targetProperty, binding, updateSourceEventName);
}
internal static void SetBinding(this MockPlatformView target, string targetProperty, BindingBase binding, INotifyPropertyChanged propertyChanged)
{
PlatformBindingHelpers.SetBinding(target, targetProperty, binding, propertyChanged);
}
public MockPlatformViewWrapper(MockPlatformView platformView)
{
PlatformView = platformView;
platformView.TransferbindablePropertiesToWrapper(this);
}
public static View ToView(this MockPlatformView platformView)
{
return(new MockPlatformViewWrapper(platformView));
}