public void AssignCommandToButton()
{
CommandProvider.OnClickCount = 0;
TestViewModel viewModel = new TestViewModel();
using(var button = new Button()) {
button.SetCommand(viewModel.TestCommand);
Assert.That(viewModel.TestCommandExecuteCount, Is.EqualTo(0));
button.PerformClick();
Assert.That(viewModel.TestCommandExecuteCount, Is.EqualTo(1));
Assert.That(viewModel.ExecuteParameter, Is.Null);
Assert.That(viewModel.CanExecuteParameter, Is.Null);
Assert.That(CommandProvider.OnClickCount, Is.EqualTo(1));
button.SetCommand(null);
button.PerformClick();
Assert.That(viewModel.TestCommandExecuteCount, Is.EqualTo(1));
Assert.That(CommandProvider.OnClickCount, Is.EqualTo(1));
viewModel.CanExecuteTestCommand = false;
button.SetCommand(viewModel.TestCommand);
button.PerformClick();
Assert.That(viewModel.TestCommandExecuteCount, Is.EqualTo(1));
Assert.That(CommandProvider.OnClickCount, Is.EqualTo(1));
viewModel.CanExecuteTestCommand = true;
button.SetCommandParameter("param");
button.PerformClick();
Assert.That(viewModel.TestCommandExecuteCount, Is.EqualTo(2));
Assert.That(viewModel.ExecuteParameter, Is.EqualTo("param"));
Assert.That(viewModel.CanExecuteParameter, Is.EqualTo("param"));
Assert.That(CommandProvider.OnClickCount, Is.EqualTo(2));
}
}
public void AssignCommandToLabel()
{
TestViewModel viewModel = new TestViewModel();
using(var label = new Label()) {
label.SetCommand(viewModel.TestCommand);
}
}
public void CollectButtonWithAssignedCommand()
{
TestViewModel viewModel = new TestViewModel();
WeakReference reference = CreateButtonAndAssignCommand(viewModel.TestCommand);
TestUtils.GarbageCollect();
Assert.That(reference.IsAlive, Is.False);
Assert.That(viewModel.TestCommand.CanExecuteChangedSubscribeCount, Is.EqualTo(1));
viewModel.TestCommand.RaiseCanExecuteChanged();
Assert.That(viewModel.TestCommand.CanExecuteChangedSubscribeCount, Is.EqualTo(0));
}
public void BindAttachedProperty2()
{
var viewModel = new TestViewModel();
using(var button = new Button()) {
button.SetValue(TextProperty, "button1");
button.SetDataContext(viewModel);
button.SetBinding(() => new Button().Text, new Binding(() => new TestViewModel().StringProperty2));
button.SetBinding(TextProperty, new Binding(() => new TestViewModel().StringProperty));
Assert.That(button.GetValue(TextProperty), Is.EqualTo(null));
Assert.That(button.Text, Is.EqualTo(string.Empty));
viewModel.StringProperty = "test";
Assert.That(button.GetValue(TextProperty), Is.EqualTo("test"));
Assert.That(button.Text, Is.EqualTo(string.Empty));
viewModel.StringProperty2 = "test2";
Assert.That(button.GetValue(TextProperty), Is.EqualTo("test"));
Assert.That(button.Text, Is.EqualTo("test2"));
button.ClearBinding(TextProperty);
Assert.That(button.GetValue(TextProperty), Is.Null);
}
}
public void SetClearBindings()
{
using(var form = new Form()) {
var button = new Button();
form.Controls.Add(button);
var viewModel = new TestViewModel() { StringProperty = "test", StringProperty2 = "test2" };
form.SetDataContext(viewModel);
BindingManager manager = new BindingManager();
manager.SetBinding(form, "Text", new Binding("StringProperty"));
Assert.That(form.Text, Is.EqualTo("test"));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(1));
Assert.That(manager.GetValueActions().Count(), Is.EqualTo(0));
SetBindingAction action = manager.GetBindingActions().First();
Assert.That(action.Control, Is.EqualTo(form));
Assert.That(action.Property.Name, Is.EqualTo("Text"));
Assert.That(action.Property, Is.InstanceOf<StandardPropertyDescriptor>());
Assert.That(((Binding)action.Binding).Path, Is.EqualTo("StringProperty"));
manager.SetBinding(button, "Text", new Binding("StringProperty2"));
Assert.That(button.Text, Is.EqualTo("test2"));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(2));
action = manager.GetBindingActions().ElementAt(1);
Assert.That(action.Control, Is.EqualTo(button));
Assert.That(action.Property.Name, Is.EqualTo("Text"));
manager.SetBinding(form, "Text", new Binding("StringProperty2"));
Assert.That(form.Text, Is.EqualTo("test2"));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(2));
action = manager.GetBindingActions().First();
Assert.That(action.Control, Is.EqualTo(form));
Assert.That(action.Property.Name, Is.EqualTo("Text"));
Assert.That(((Binding)action.Binding).Path, Is.EqualTo("StringProperty2"));
manager.ClearBinding(form, "Text");
Assert.That(form.Text, Is.EqualTo(string.Empty));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(1));
action = manager.GetBindingActions().First();
Assert.That(action.Control, Is.EqualTo(button));
Assert.That(action.Property.Name, Is.EqualTo("Text"));
manager.SetBinding(form, "Text", new Binding("StringProperty"));
manager.SetBinding(form, "Tag", new Binding("StringProperty"));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(3));
manager.ClearAllBindings(form);
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(1));
action = manager.GetBindingActions().First();
Assert.That(action.Control, Is.EqualTo(button));
Assert.That(action.Property.Name, Is.EqualTo("Text"));
manager.SetBinding(form, TextProperty, new Binding("StringProperty"));
Assert.That(form.GetValue(TextProperty), Is.EqualTo("test"));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(2));
action = manager.GetBindingActions().ElementAt(1);
Assert.That(action.Control, Is.EqualTo(form));
Assert.That(action.Property.Name, Is.EqualTo("Text"));
Assert.That(action.Property, Is.InstanceOf<AttachedPropertyDescriptor>());
Assert.That(((Binding)action.Binding).Path, Is.EqualTo("StringProperty"));
manager.ClearBinding(form, TextProperty);
Assert.That(form.GetValue(TextProperty), Is.EqualTo(null));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(1));
Assert.That(manager.GetBindingActions().First().Property, Is.InstanceOf<StandardPropertyDescriptor>());
manager.SetBinding(button, TextProperty, new Binding("StringProperty2"));
Assert.That(button.GetValue(TextProperty), Is.EqualTo("test2"));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(2));
manager.ClearAllBindings(button);
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(0));
}
}
public void SetClearValue()
{
using(var form = new Form()) {
var button = new Button();
form.Controls.Add(button);
var viewModel = new TestViewModel() { StringProperty = "test", StringProperty2 = "test2" };
form.SetDataContext(viewModel);
BindingManager manager = new BindingManager();
manager.SetBinding(button, DataContextProvider.DataContextProperty, new Binding(() => viewModel.StringProperty));
manager.SetValue(button, DataContextProvider.DataContextProperty, "value");
Assert.That(button.GetDataContext(), Is.EqualTo("value"));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(0));
Assert.That(manager.GetValueActions().Count(), Is.EqualTo(1));
SetValueAction action = manager.GetValueActions().First();
Assert.That(action.Control, Is.EqualTo(button));
Assert.That(((AttachedPropertyDescriptor)action.Property).Property, Is.EqualTo(DataContextProvider.DataContextProperty));
Assert.That(action.Value, Is.EqualTo("value"));
Assert.That(manager.FindAction(button, AttachedPropertyDescriptor.FromAttachedProperty(DataContextProvider.DataContextProperty)), Is.EqualTo(action));
manager.SetValue(button, DataContextProvider.DataContextProperty, "value2");
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(0));
Assert.That(manager.GetValueActions().Count(), Is.EqualTo(1));
Assert.That(button.GetDataContext(), Is.EqualTo("value2"));
action = manager.GetValueActions().First();
Assert.That(action.Control, Is.EqualTo(button));
Assert.That(((AttachedPropertyDescriptor)action.Property).Property, Is.EqualTo(DataContextProvider.DataContextProperty));
Assert.That(action.Value, Is.EqualTo("value2"));
manager.ClearValue(button, DataContextProvider.DataContextProperty);
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(0));
Assert.That(manager.GetValueActions().Count(), Is.EqualTo(0));
Assert.That(button.GetDataContext(), Is.Null);
}
}
WeakReference DoCollectViewModel_TwoWay_AttachedProperty(TextBox textBox)
{
var viewModel = new TestViewModel();
textBox.SetDataContext(viewModel);
textBox.SetBinding(CommandProvider.CommandParameterProperty, new Binding(() => viewModel.StringProperty, BindingMode.TwoWay));
return new WeakReference(viewModel);
}
WeakReference DoCollectTwoWayBoudnDataControl_AttachedProperty(TestViewModel viewModel)
{
var textBox = new TextBox();
textBox.SetDataContext(viewModel);
textBox.SetBinding(CommandProvider.CommandParameterProperty, new Binding(() => viewModel.StringProperty, BindingMode.TwoWay));
return new WeakReference(textBox);
}
public void BindingWithPath()
{
var viewModel = new TestViewModel() { StringProperty = "test", StringProperty2 = "StringProperty2" };
using(var button = new Button()) {
button.SetDataContext(viewModel);
button.SetBinding(() => button.Text, new Binding("StringProperty"));
Assert.That(button.Text, Is.EqualTo("test"));
viewModel.StringProperty = "test2";
Assert.That(button.Text, Is.EqualTo("test2"));
button.ClearBinding(() => button.Text);
Assert.That(button.Text, Is.EqualTo(string.Empty));
button.SetBinding(() => button.Text, new Binding("StringProperty"));
Assert.That(button.Text, Is.EqualTo("test2"));
button.SetBinding(() => button.Text, new Binding("StringProperty2"));
Assert.That(button.Text, Is.EqualTo("StringProperty2"));
viewModel = new TestViewModel() { StringProperty2 = "StringProperty2_", NestedViewModel = new NestedTestViewModel() { NestedStringProperty = "NestedStringProperty" } };
button.SetDataContext(viewModel);
Assert.That(button.Text, Is.EqualTo("StringProperty2_"));
button.SetBinding(() => button.Text, new Binding("NestedViewModel.NestedStringProperty"));
Assert.That(button.Text, Is.EqualTo("NestedStringProperty"));
viewModel.NestedViewModel.NestedStringProperty = "NestedStringProperty2";
Assert.That(button.Text, Is.EqualTo("NestedStringProperty2"));
viewModel.NestedViewModel = new NestedTestViewModel() { NestedStringProperty = "NestedStringProperty3" };
Assert.That(button.Text, Is.EqualTo("NestedStringProperty3"));
viewModel.NestedViewModel = null;
Assert.That(button.Text, Is.EqualTo(string.Empty));
}
}
WeakReference DoBindButtonAndGetViewModelReference(Button button)
{
var viewModel = new TestViewModel() { StringProperty = "test" };
button.SetDataContext(viewModel);
button.SetBinding("Text", new Binding(() => viewModel.StringProperty));
return new WeakReference(viewModel);
}
public void TwoWayBindingForAttachedProperty()
{
var viewModel = new TestViewModel() { };
using(var button = new Button()) {
button.SetDataContext(viewModel);
PropertyEntry<object> entry = CommandProvider.CommandParameterProperty.GetPropertyEntry(button);
Assert.That(entry.ChangedSubscribeCount, Is.EqualTo(0));
button.SetBinding(CommandProvider.CommandParameterProperty, new Binding(() => viewModel.StringProperty, BindingMode.TwoWay));
Assert.That(entry.ChangedSubscribeCount, Is.EqualTo(1));
Assert.That(button.GetCommandParameter(), Is.Null);
button.SetCommandParameter("test");
Assert.That(viewModel.StringProperty, Is.EqualTo("test"));
button.ClearBinding(CommandProvider.CommandParameterProperty);
Assert.That(entry.ChangedSubscribeCount, Is.EqualTo(0));
Assert.That(viewModel.StringProperty, Is.EqualTo("test"));
Assert.That(button.GetCommandParameter(), Is.Null);
viewModel.StringProperty = "test2";
Assert.That(button.GetCommandParameter(), Is.Null);
button.SetCommandParameter("test3");
}
}
public void TwoWayBinding()
{
var viewModel = new TestViewModel() { };
using(var textBox = new TextBox()) {
textBox.SetDataContext(viewModel);
textBox.SetBinding(() => textBox.Text, new Binding(() => viewModel.StringProperty));
Assert.That(textBox.Text, Is.EqualTo(string.Empty));
textBox.Text = "test";
Assert.That(viewModel.StringProperty, Is.EqualTo(null));
textBox.SetBinding(() => textBox.Text, new Binding(() => viewModel.StringProperty, BindingMode.TwoWay));
Assert.That(textBox.Text, Is.EqualTo(string.Empty));
textBox.Text = "test";
Assert.That(viewModel.StringProperty, Is.EqualTo("test"));
}
}
public void ExtractPathFromLambdaExpression()
{
var viewModel = new TestViewModel() { StringProperty = "StringProperty", NestedViewModel = new NestedTestViewModel() { NestedStringProperty = "NestedStringProperty" } };
using(var button = new Button()) {
button.SetDataContext(viewModel);
button.SetBinding(() => button.Text, new Binding(() => viewModel.StringProperty));
Assert.That(button.Text, Is.EqualTo("StringProperty"));
button.SetBinding(() => button.Text, new Binding(() => viewModel.NestedViewModel.NestedStringProperty));
Assert.That(button.Text, Is.EqualTo("NestedStringProperty"));
button.SetBinding(() => new Button().Text, new Binding(() => new TestViewModel().StringProperty));
Assert.That(button.Text, Is.EqualTo("StringProperty"));
button.SetBinding(() => new Button().Text, new Binding(() => new TestViewModel().NestedViewModel.NestedStringProperty));
Assert.That(button.Text, Is.EqualTo("NestedStringProperty"));
}
}
public void ConvertToTargetPropertyType()
{
var viewModel = new TestViewModel() { IntProperty = 9, DoubleProperty = 153.2 };
using(var button = new Button()) {
button.SetDataContext(viewModel);
button.SetBinding(() => button.Text, new Binding(() => viewModel.IntProperty));
Assert.That(button.Text, Is.EqualTo("9"));
viewModel.IntProperty = 13;
Assert.That(button.Text, Is.EqualTo("13"));
button.SetBinding(() => button.TabIndex, new Binding(() => viewModel.DoubleProperty));
Assert.That(button.TabIndex, Is.EqualTo(153));
}
}
public void CollectBoundControl_TwoWay_AttachedProperty()
{
var viewModel = new TestViewModel();
var reference = DoCollectTwoWayBoudnDataControl_AttachedProperty(viewModel);
TestUtils.GarbageCollect();
Assert.That(reference.IsAlive, Is.False);
viewModel.StringProperty = "new Value";
}
public void ClearTwoWayBinding()
{
var viewModel = new TestViewModel() { };
using(var testControl = new TestControl()) {
testControl.SetDataContext(viewModel);
Assert.That(testControl.TestPropertyChangedSubscribeCount, Is.EqualTo(0));
testControl.SetBinding(() => testControl.TestProperty, new Binding(() => viewModel.StringProperty, BindingMode.TwoWay));
Assert.That(testControl.TestPropertyChangedSubscribeCount, Is.EqualTo(1));
Assert.That(testControl.TestProperty, Is.Null);
testControl.TestProperty = "test";
Assert.That(viewModel.StringProperty, Is.EqualTo("test"));
Assert.That(testControl.TestPropertyChangedSubscribeCount, Is.EqualTo(1));
testControl.ClearBinding(() => testControl.TestProperty);
Assert.That(viewModel.StringProperty, Is.EqualTo("test"));
Assert.That(testControl.TestProperty, Is.Null);
Assert.That(testControl.TestPropertyChangedSubscribeCount, Is.EqualTo(0));
viewModel.StringProperty = "test2";
Assert.That(testControl.TestProperty, Is.Null);
}
}
WeakReference DoCollectTwoWayBoudnDataControl(TestViewModel viewModel)
{
var textBox = new TextBox();
textBox.SetDataContext(viewModel);
textBox.SetBinding("Text", new Binding(() => viewModel.StringProperty, BindingMode.TwoWay));
return new WeakReference(textBox);
}
public void BindingToPathWithInheritedDataContext()
{
var viewModel = new TestViewModel();
using(var form = new Form()) {
var button1 = new Button() { Text = "button1" };
form.Controls.Add(button1);
form.SetDataContext(viewModel);
button1.SetBinding(() => button1.Text, new Binding("StringProperty"));
Assert.That(button1.Text, Is.EqualTo(string.Empty));
viewModel.StringProperty = "test";
Assert.That(button1.Text, Is.EqualTo("test"));
}
}
