public void BindSpecifiedPropertyWithPositionalParameters() => AssertExperimental(() =>
{
var button = new Button();
object converterParameter = 1;
string stringFormat = nameof(BindSpecifiedPropertyWithPositionalParameters) + " {0}";
IValueConverter converter = new ToStringConverter();
object source = new ViewModel();
object targetNullValue = nameof(BindSpecifiedPropertyWithPositionalParameters) + " null";
object fallbackValue = nameof(BindSpecifiedPropertyWithPositionalParameters) + " fallback";
button.Bind(
Button.TextProperty,
nameof(viewModel.Text),
BindingMode.OneWay,
converter,
converterParameter,
stringFormat,
source,
targetNullValue,
fallbackValue
);
BindingHelpers.AssertBindingExists(
button,
targetProperty: Button.TextProperty,
path: nameof(viewModel.Text),
mode: BindingMode.OneWay,
converter: converter,
converterParameter: converterParameter,
stringFormat: stringFormat,
source: source,
targetNullValue: targetNullValue,
fallbackValue: fallbackValue
);
});
public void BindDefaultPropertyWithInlineTwoWayParameterizedConvertAndPositionalParameters() => AssertExperimental(() =>
{
var label = new Label();
object converterParameter = 1;
string stringFormat = nameof(BindDefaultPropertyWithInlineTwoWayParameterizedConvertAndPositionalParameters) + " {0}";
object source = new ViewModel();
object targetNullValue = nameof(BindDefaultPropertyWithInlineTwoWayParameterizedConvertAndPositionalParameters) + " null";
object fallbackValue = nameof(BindDefaultPropertyWithInlineTwoWayParameterizedConvertAndPositionalParameters) + " fallback";
label.Bind(
nameof(viewModel.Text),
BindingMode.TwoWay,
(string text, int repeat) => string.Concat(Enumerable.Repeat($"'{text?.Trim('\'')}'", repeat)),
(text, repeat) => text?.Substring(0, text.Length / repeat).Trim('\''),
converterParameter,
stringFormat,
source,
targetNullValue,
fallbackValue
);
BindingHelpers.AssertBindingExists(
label,
targetProperty: Label.TextProperty,
path: nameof(viewModel.Text),
mode: BindingMode.TwoWay,
assertConverterInstanceIsAnyNotNull: true,
converterParameter: converterParameter,
stringFormat: stringFormat,
source: source,
targetNullValue: targetNullValue,
fallbackValue: fallbackValue,
assertConvert: c => c.AssertConvert("test", 2, "'test''test'", twoWay: true)
);
});
public void BindDefaultPropertyWithInlineOneWayConvertAndPositionalParameters() => AssertExperimental(() =>
{
var label = new Label();
object converterParameter = 1;
string stringFormat = nameof(BindDefaultPropertyWithInlineOneWayConvertAndPositionalParameters) + " {0}";
object source = new ViewModel();
object targetNullValue = nameof(BindDefaultPropertyWithInlineOneWayConvertAndPositionalParameters) + " null";
object fallbackValue = nameof(BindDefaultPropertyWithInlineOneWayConvertAndPositionalParameters) + " fallback";
label.Bind(
nameof(viewModel.Text),
BindingMode.OneWay,
(string text) => $"'{text?.Trim('\'')}'",
null,
converterParameter,
stringFormat,
source,
targetNullValue,
fallbackValue
);
BindingHelpers.AssertBindingExists(
label,
targetProperty: Label.TextProperty,
path: nameof(viewModel.Text),
mode: BindingMode.OneWay,
assertConverterInstanceIsAnyNotNull: true,
converterParameter: converterParameter,
stringFormat: stringFormat,
source: source,
targetNullValue: targetNullValue,
fallbackValue: fallbackValue,
assertConvert: c => c.AssertConvert("test", "'test'")
);
});
public void BindTapGestureDefaults() => AssertExperimental(() =>
{
var gestureElement = new TGestureElement();
gestureElement.BindTapGesture(commandPath);
var gestureRecognizer = AssertHasGestureRecognizer <TapGestureRecognizer>(gestureElement);
BindingHelpers.AssertBindingExists(gestureRecognizer, TapGestureRecognizer.CommandProperty, commandPath);
});
public void BindCommandWithoutParameter() => AssertExperimental(() =>
{
var textCell = new TextCell();
string path = nameof(viewModel.Command);
textCell.BindCommand(path, parameterPath: null);
BindingHelpers.AssertBindingExists(textCell, TextCell.CommandProperty, path);
Assert.That(BindingHelpers.GetBinding(textCell, TextCell.CommandParameterProperty), Is.Null);
});
public void BindCommandWithDefaults() => AssertExperimental(() =>
{
var textCell = new TextCell();
string path = nameof(viewModel.Command);
textCell.BindCommand(path);
BindingHelpers.AssertBindingExists(textCell, TextCell.CommandProperty, path);
BindingHelpers.AssertBindingExists(textCell, TextCell.CommandParameterProperty);
});
public void BindTapGesturePositionalParameters() => AssertExperimental(() =>
{
var gestureElement = new TGestureElement();
object commandSource = new ViewModel();
object parameterSource = new ViewModel();
gestureElement.BindTapGesture(commandPath, commandSource, parameterPath, parameterSource);
var gestureRecognizer = AssertHasGestureRecognizer <TapGestureRecognizer>(gestureElement);
BindingHelpers.AssertBindingExists(gestureRecognizer, TapGestureRecognizer.CommandProperty, commandPath, source: commandSource);
BindingHelpers.AssertBindingExists(gestureRecognizer, TapGestureRecognizer.CommandParameterProperty, parameterPath, source: parameterSource);
});
public void BindCommandWithPositionalParameters() => AssertExperimental(() =>
{
var textCell = new TextCell();
object source = new ViewModel();
string path = nameof(viewModel.Command);
string parameterPath = nameof(viewModel.Id);
object parameterSource = new ViewModel();
textCell.BindCommand(path, source, parameterPath, parameterSource);
BindingHelpers.AssertBindingExists(textCell, TextCell.CommandProperty, path, source: source);
BindingHelpers.AssertBindingExists(textCell, TextCell.CommandParameterProperty, parameterPath, source: parameterSource);
});
public void BindDefaultPropertyWithInlineOneWayParameterizedConvertAndDefaults() => AssertExperimental(() =>
{
var label = new Label();
label.Bind(
nameof(viewModel.Text),
convert: (string text, int repeat) => string.Concat(Enumerable.Repeat($"'{text?.Trim('\'')}'", repeat))
);
BindingHelpers.AssertBindingExists(
label,
Label.TextProperty,
nameof(viewModel.Text),
assertConverterInstanceIsAnyNotNull: true,
assertConvert: c => c.AssertConvert("test", 2, "'test''test'")
);
});
public void BindDefaultPropertyWithInlineOneWayConvertAndDefaults() => AssertExperimental(() =>
{
var label = new Label();
label.Bind(
nameof(viewModel.Text),
convert: (string text) => $"'{text}'"
);
BindingHelpers.AssertBindingExists(
label,
Label.TextProperty,
nameof(viewModel.Text),
assertConverterInstanceIsAnyNotNull: true,
assertConvert: c => c.AssertConvert("test", "'test'")
);
});
public void BindSpecifiedPropertyWithInlineOneWayConvertAndDefaults() => AssertExperimental(() =>
{
var label = new Label();
label.Bind(
Label.TextColorProperty,
nameof(viewModel.IsRed),
convert: (bool isRed) => isRed ? Color.Red : Color.Transparent
);
BindingHelpers.AssertBindingExists(
label,
Label.TextColorProperty,
nameof(viewModel.IsRed),
assertConverterInstanceIsAnyNotNull: true,
assertConvert: c => c.AssertConvert(true, Color.Red).AssertConvert(false, Color.Transparent)
);
});
public void BindSpecifiedPropertyWithInlineOneWayParameterizedConvertAndDefaults() => AssertExperimental(() =>
{
var label = new Label();
label.Bind(
Label.TextColorProperty,
nameof(viewModel.IsRed),
convert: (bool isRed, double alpha) => (isRed ? Color.Red : Color.Green).MultiplyAlpha(alpha)
);
BindingHelpers.AssertBindingExists(
label,
Label.TextColorProperty,
nameof(viewModel.IsRed),
assertConverterInstanceIsAnyNotNull: true,
assertConvert: c => c.AssertConvert(true, 0.5, Color.Red.MultiplyAlpha(0.5))
.AssertConvert(false, 0.2, Color.Green.MultiplyAlpha(0.2))
);
});
public void BindDefaultPropertyWithInlineTwoWayConvertAndDefaults() => AssertExperimental(() =>
{
var label = new Label();
label.Bind(
nameof(viewModel.Text),
BindingMode.TwoWay,
(string text) => $"'{text?.Trim('\'')}'",
text => text?.Trim('\'')
);
BindingHelpers.AssertBindingExists(
label,
Label.TextProperty,
nameof(viewModel.Text),
BindingMode.TwoWay,
assertConverterInstanceIsAnyNotNull: true,
assertConvert: c => c.AssertConvert("test", "'test'", twoWay: true)
);
});
public void BindSpecifiedPropertyWithInlineTwoWayConvertAndPositionalParameters() => AssertExperimental(() =>
{
var button = new Button();
object converterParameter = 1;
string stringFormat = nameof(BindSpecifiedPropertyWithInlineTwoWayConvertAndPositionalParameters) + " {0}";
object source = new ViewModel();
object targetNullValue = nameof(BindSpecifiedPropertyWithInlineTwoWayConvertAndPositionalParameters) + " null";
object fallbackValue = nameof(BindSpecifiedPropertyWithInlineTwoWayConvertAndPositionalParameters) + " fallback";
button.Bind(
Button.TextProperty,
nameof(viewModel.Text),
BindingMode.TwoWay,
(string text) => $"'{text?.Trim('\'')}'",
text => text?.Trim('\''),
converterParameter,
stringFormat,
source,
targetNullValue,
fallbackValue
);
BindingHelpers.AssertBindingExists(
button,
targetProperty: Button.TextProperty,
path: nameof(viewModel.Text),
mode: BindingMode.TwoWay,
assertConverterInstanceIsAnyNotNull: true,
converterParameter: converterParameter,
stringFormat: stringFormat,
source: source,
targetNullValue: targetNullValue,
fallbackValue: fallbackValue,
assertConvert: c => c.AssertConvert("test", "'test'", twoWay: true)
);
});
public void BindSpecifiedPropertyWithDefaults() => AssertExperimental(() =>
{
var label = new Label();
label.Bind(Label.TextColorProperty, nameof(viewModel.TextColor));
BindingHelpers.AssertBindingExists(label, Label.TextColorProperty, nameof(viewModel.TextColor));
});