public void TestOneTimeBinding()
{
var model = new ModelTestClass
{
Number = 1,
Text = "First"
};
var control = new ControlTestClass
{
Text = "Wrong",
Number = -1
};
var propInfo = typeof(ModelTestClass).GetProperty("Text");
var textProp = new BindableProperty<ControlTestClass, string>(control, o => o.Text, (o, action) => o.TextChanged += (sender, args) => action());
int controlCount = 0;
textProp.PropertyChanged += (sender, args) => controlCount++;
int modelCount = 0;
model.PropertyChanged += (sender, args) => modelCount ++;
Assert.Equal("Wrong", control.Text);
Assert.Equal("First", model.Text);
var binding = new BindingOneTime<ModelTestClass, ControlTestClass, string, string>(model, propInfo, o => o.Text, textProp, DataConverter<string>.EmptyConverter);
TestOneTimeBindingInfo(binding, model, control, ref modelCount, ref controlCount);
}
public void TestBinder()
{
var model = new ModelTestClass
{
Number = 1,
Text = "First"
};
var control = new ControlTestClass
{
Text = "Wrong",
Number = -1
};
var textProp = new BindableProperty<ControlTestClass, string>(control, o => o.Text, (o, action) => o.TextChanged += (sender, args) => action());
int[] controlCounts = { 0 };
textProp.PropertyChanged += (sender, args) => controlCounts[0]++;
int[] modelCounts = { 0 };
model.PropertyChanged += (sender, args) => modelCounts[0]++;
var binder = new Binder<ModelTestClass, ControlTestClass, string, string>(m => m.Text, () => DataConverter<string>.EmptyConverter);
var bInfo = binder.Bind(model, textProp, BindingMode.OneTime);
TestOneTimeBindingInfo(bInfo, model, control, ref modelCounts[0], ref controlCounts[0]);
bInfo.Unbind();
model.Text = "First";
modelCounts[0] = 0;
control.Text = "Wrong";
controlCounts[0] = 0;
textProp = new BindableProperty<ControlTestClass, string>(control, o => o.Text, (o, action) => o.TextChanged += (sender, args) => action());
bInfo = binder.Bind(model, textProp, BindingMode.OneWay);
TestOneWayBindingInfo(bInfo, model, control, ref modelCounts[0], ref controlCounts[0]);
bInfo.Unbind();
model.Text = "Wrong";
control.Text = "First";
modelCounts[0] = 0;
controlCounts[0] = 0;
textProp = new BindableProperty<ControlTestClass, string>(control, o => o.Text, (o, action) => o.TextChanged += (sender, args) => action());
bInfo = binder.Bind(model, textProp, BindingMode.OneWayToSource);
TestOneWayToSourceBindingInfo(bInfo, model, control, modelCounts, controlCounts);
bInfo.Unbind();
model.Text = "First";
modelCounts[0] = 0;
control.Text = "Wrong";
controlCounts[0] = 0;
textProp = new BindableProperty<ControlTestClass, string>(control, o => o.Text, (o, action) => o.TextChanged += (sender, args) => action());
bInfo = binder.Bind(model, textProp, BindingMode.TwoWay);
TestTwoWayBindingInfo(bInfo, model, control, ref modelCounts[0], ref controlCounts[0]);
bInfo.Unbind();
}
private static void TestTwoWayBindingInfo(IBindingInfo<ModelTestClass, ControlTestClass, string, string> binding, ModelTestClass model, ControlTestClass control, ref int modelCount, ref int controlCount)
{
Assert.Equal(BindingMode.TwoWay, binding.Direction);
Assert.Equal("First", control.Text);
Assert.Equal(1, controlCount);
Assert.Equal(0, modelCount);
model.Text = 2.ToText();
Assert.Equal(1, modelCount);
Assert.Equal(2, controlCount);
Assert.Equal("Second", control.Text);
binding.Model = null;
model.Text = 3.ToText();
Assert.Equal(2, modelCount);
binding.Model = model;
Assert.Equal("Third", control.Text);
Assert.Equal(3, controlCount);
control.Text = "Forth";
Assert.Equal(4, controlCount);
Assert.Equal(3, modelCount);
Assert.Equal("Forth", model.Text);
}
private static void TestOneWayToSourceBindingInfo(IBindingInfo<ModelTestClass, ControlTestClass, string, string> binding, ModelTestClass model, ControlTestClass control, int[] modelCounts, int[] controlCounts)
{
Assert.Equal(BindingMode.OneWayToSource, binding.Direction);
Assert.Equal("First", model.Text);
Assert.Equal(0, controlCounts[0]);
Assert.Equal(1, modelCounts[0]);
control.Text = 2.ToText();
Assert.Equal(2, modelCounts[0]);
Assert.Equal(1, controlCounts[0]);
Assert.Equal("Second", model.Text);
binding.Model = null;
control.Text = 3.ToText();
Assert.Equal(2, controlCounts[0]);
binding.Model = model;
Assert.Equal("Third", model.Text);
Assert.Equal(3, modelCounts[0]);
Assert.Equal(2, controlCounts[0]);
model.Text = "Forth";
Assert.Equal(4, modelCounts[0]);
Assert.Equal(2, controlCounts[0]);
}
