public void UndoSetBindingAndValue()
{
using(var form = new Form()) {
//form initialized
BindingManager manager = new BindingManager();
((ISupportInitialize)manager).BeginInit();
((ISupportInitialize)manager).EndInit();
//binding created with wizard
manager.SetBinding(form, TextProperty, new Binding());
//value set with property grid
manager.SetValue(form, TextProperty, "test");
//deserialization on undo
((ISupportInitialize)manager).BeginInit();
Assert.That(form.GetValue(TextProperty), Is.Null);
manager.SetBinding(form, TextProperty, new Binding());
((ISupportInitialize)manager).EndInit();
//undo from property grid
manager.ClearValue(form, TextProperty);
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(1));
Assert.That(manager.GetValueActions().Count(), Is.EqualTo(0));
form.SetDataContext("Test");
Assert.That(form.GetValue(TextProperty), Is.EqualTo("Test"));
}
}
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);
}
}