public void Should_Bind_To_Element_Path()
{
TextBlock target;
var root = new TestRoot
{
Child = new StackPanel
{
Children = new Controls.Controls
{
new TextBlock
{
Name = "source",
Text = "foo",
},
(target = new TextBlock
{
Name = "target",
})
}
}
};
var binding = new Binding
{
ElementName = "source",
Path = "Text",
};
target.Bind(TextBox.TextProperty, binding);
Assert.Equal("foo", target.Text);
}
public void Should_Bind_To_Element()
{
TextBlock source;
ContentControl target;
var root = new TestRoot
{
Child = new StackPanel
{
Children = new Controls.Controls
{
(source = new TextBlock
{
Name = "source",
Text = "foo",
}),
(target = new ContentControl
{
Name = "target",
})
}
}
};
var binding = new Binding
{
ElementName = "source",
};
target.Bind(ContentControl.ContentProperty, binding);
Assert.Same(source, target.Content);
}
public void Track_By_Name_Should_Find_Control_Added_Later()
{
StackPanel panel;
TextBlock relativeTo;
var root = new TestRoot
{
Child = (panel = new StackPanel
{
Children = new Controls.Controls
{
(relativeTo = new TextBlock
{
Name = "start"
}),
}
})
};
var locator = ControlLocator.Track(relativeTo, "target");
var target = new TextBlock { Name = "target" };
var result = new List<IControl>();
using (locator.Subscribe(x => result.Add(x)))
{
panel.Children.Add(target);
}
Assert.Equal(new[] { null, target }, result);
Assert.Equal(0, root.NameScopeRegisteredSubscribers);
Assert.Equal(0, root.NameScopeUnregisteredSubscribers);
}
public void Source_Should_Be_Used()
{
var source = new Source { Foo = "foo" };
var binding = new Binding { Source = source, Path = "Foo" };
var target = new TextBlock();
target.Bind(TextBlock.TextProperty, binding);
Assert.Equal(target.Text, "foo");
}
public async Task PropertyEquals_Matches_When_Property_Has_Matching_Value()
{
var control = new TextBlock();
var target = default(Selector).PropertyEquals(TextBlock.TextProperty, "foo");
var activator = target.Match(control).ObservableResult;
Assert.False(await activator.Take(1));
control.Text = "foo";
Assert.True(await activator.Take(1));
control.Text = null;
Assert.False(await activator.Take(1));
}
public void Setter_Should_Apply_Binding_To_Property()
{
var control = new TextBlock();
var subject = new BehaviorSubject<object>("foo");
var descriptor = new InstancedBinding(subject);
var binding = Mock.Of<IBinding>(x => x.Initiate(control, TextBlock.TextProperty, null, false) == descriptor);
var style = Mock.Of<IStyle>();
var setter = new Setter(TextBlock.TextProperty, binding);
setter.Apply(style, control, null);
Assert.Equal("foo", control.Text);
}
public static void Build(MainWindow window)
{
// maxRow y maxCol deberían estar definidas en el ViewModel...
int maxRow = 9;
int maxCol = 5;
int i = 0;
Grid grdMain = window.FindControl <Grid>("grdMain");
for (int row = 0; row < maxRow; row++)
{
grdMain.RowDefinitions.Add(new RowDefinition {
Height = GridLength.Parse("*", CultureInfo.InstalledUICulture)
});
}
for (int col = 0; col < maxCol; col++)
{
grdMain.ColumnDefinitions.Add(new ColumnDefinition {
Width = GridLength.Parse("1*", CultureInfo.InstalledUICulture)
});
}
for (int row = 0; row < maxRow; row++)
{
for (int col = 0; col < maxCol; col++)
{
ButtonT b = new ButtonT("Boton Nro: " + i.ToString(), i);
var stackPanel = new Avalonia.Controls.StackPanel();
var textBlock = new Avalonia.Controls.TextBlock
{
[!TextBlock.TextProperty] = new Binding("Name")
};
stackPanel.Children.Add(textBlock);
var btn = new Avalonia.Controls.Button
{
Background = b.ButtonColor,
[!Button.BackgroundProperty] = b.ToBinding <SolidColorBrush>(),
[Grid.RowProperty] = row,
[Grid.ColumnProperty] = col,
// window.DataContext es null, por eso uso la instancia global del viewmodel :( )
Command = ReactiveCommand.Create <ButtonT>(MainWindowViewModel.Instance.RunTheThing),
CommandParameter = b,
Content = stackPanel,
DataContext = b
};
i++;
grdMain.Children.Add(btn);
}
}
}
public void Initiate_Should_Enable_Data_Validation_With_BindingPriority_LocalValue()
{
var textBlock = new TextBlock
{
DataContext = new Class1(),
};
var target = new Binding(nameof(Class1.Foo));
var instanced = target.Initiate(textBlock, TextBlock.TextProperty, enableDataValidation: true);
var subject = (BindingExpression)instanced.Subject;
object result = null;
subject.Subscribe(x => result = x);
Assert.Equal(new BindingNotification("foo"), result);
}
public void Initiate_Should_Not_Enable_Data_Validation_With_BindingPriority_TemplatedParent()
{
var textBlock = new TextBlock
{
DataContext = new Class1(),
};
var target = new Binding(nameof(Class1.Foo)) { Priority = BindingPriority.TemplatedParent };
var instanced = target.Initiate(textBlock, TextBlock.TextProperty, enableDataValidation: true);
var subject = (BindingExpression)instanced.Subject;
object result = null;
subject.Subscribe(x => result = x);
Assert.IsType<string>(result);
}
public void OneWayToSource_Binding_Should_Be_Set_Up()
{
var source = new Source { Foo = "foo" };
var target = new TextBlock { DataContext = source, Text = "bar" };
var binding = new Binding
{
Path = "Foo",
Mode = BindingMode.OneWayToSource,
};
target.Bind(TextBox.TextProperty, binding);
Assert.Equal("bar", source.Foo);
target.Text = "baz";
Assert.Equal("baz", source.Foo);
source.Foo = "quz";
Assert.Equal("baz", target.Text);
}
public Form Panel <T>(string modelFieldName, Action <Form> populatePanel)
{
/*
* Here is documentation on how ContentControl works:
* https://docs.avaloniaui.net/docs/controls/contentcontrol
*/
var panelControl = new Avalonia.Controls.ContentControl();
if (!(getModelValue(modelFieldName) is T))
{
throw new Exception(
$"Model {nameof(modelFieldName)} source property specified by name [{modelFieldName}] is not of type T: {typeof(T).Name}");
}
/*
* One Way binding, because the ContentControl cannot set the model back, it just displays the model
*/
AddBinding <object>(modelFieldName: modelFieldName,
control: panelControl,
property: Avalonia.Controls.ContentControl.ContentProperty,
isTwoWayDataBinding: false);
panelControl.ContentTemplate = new Avalonia.Controls.Templates.FuncDataTemplate <T>((itemModel, nameScope) =>
{
// if the model is null then just display nothing
if (itemModel == null)
{
// how could itemModel be null? Sometimes it is though, so strange
var tb = new Avalonia.Controls.TextBlock();
tb.Text = "(null)";
return(tb);
}
var contentForm = new Form(__app: this.app, _model: new lib.BindableDynamicDictionary());
contentForm.DataContext = itemModel;
populatePanel(contentForm);
contentForm.Host.DataContext = itemModel;
return(contentForm.Host);
});
AddRowToHost(panelControl);
return(this);
}
public void Should_Return_FallbackValue_When_Converter_Returns_UnsetValue()
{
var target = new TextBlock();
var source = new { A = 1, B = 2, C = 3 };
var binding = new MultiBinding
{
Converter = new UnsetValueConverter(),
Bindings = new[]
{
new Binding { Path = "A" },
new Binding { Path = "B" },
new Binding { Path = "C" },
},
FallbackValue = "fallback",
};
target.Bind(TextBlock.TextProperty, binding);
Assert.Equal("fallback", target.Text);
}
public void Grandchild_Size_Changed()
{
using (var context = AvaloniaLocator.EnterScope())
{
RegisterServices();
Border border;
TextBlock textBlock;
var window = new Window()
{
SizeToContent = SizeToContent.WidthAndHeight,
Content = border = new Border
{
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center,
Child = new Border
{
Child = textBlock = new TextBlock
{
Width = 400,
Height = 400,
Text = "Hello World!",
},
}
}
};
LayoutManager.Instance.ExecuteInitialLayoutPass(window);
Assert.Equal(new Size(400, 400), border.Bounds.Size);
textBlock.Width = 200;
LayoutManager.Instance.ExecuteLayoutPass();
Assert.Equal(new Size(200, 400), border.Bounds.Size);
}
}
public async void Track_By_Name_Should_Find_Control_Added_Earlier()
{
TextBlock target;
TextBlock relativeTo;
var root = new TestRoot
{
Child = new StackPanel
{
Children = new Controls.Controls
{
(target = new TextBlock { Name = "target" }),
(relativeTo = new TextBlock { Name = "start" }),
}
}
};
var locator = ControlLocator.Track(relativeTo, "target");
var result = await locator.Take(1);
Assert.Same(target, result);
Assert.Equal(0, root.NameScopeRegisteredSubscribers);
Assert.Equal(0, root.NameScopeUnregisteredSubscribers);
}
public void Should_Use_DefaultValueConverter_When_No_Converter_Specified()
{
var target = new TextBlock(); ;
var binding = new Binding
{
Path = "Foo",
};
var result = binding.Initiate(target, TextBox.TextProperty).Subject;
Assert.IsType<DefaultValueConverter>(((ExpressionSubject)result).Converter);
}
public void Test_ScrollViewer_With_TextBlock()
{
using (var context = AvaloniaLocator.EnterScope())
{
RegisterServices();
ScrollViewer scrollViewer;
TextBlock textBlock;
var window = new Window()
{
Width = 800,
Height = 600,
SizeToContent = SizeToContent.WidthAndHeight,
Content = scrollViewer = new ScrollViewer
{
Width = 200,
Height = 200,
CanScrollHorizontally = true,
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center,
Content = textBlock = new TextBlock
{
Width = 400,
Height = 400,
Text = "Hello World!",
},
}
};
LayoutManager.Instance.ExecuteInitialLayoutPass(window);
Assert.Equal(new Size(800, 600), window.Bounds.Size);
Assert.Equal(new Size(200, 200), scrollViewer.Bounds.Size);
Assert.Equal(new Point(300, 200), Position(scrollViewer));
Assert.Equal(new Size(400, 400), textBlock.Bounds.Size);
var scrollBars = scrollViewer.GetTemplateChildren().OfType<ScrollBar>().ToList();
var presenters = scrollViewer.GetTemplateChildren().OfType<ScrollContentPresenter>().ToList();
Assert.Equal(2, scrollBars.Count);
Assert.Equal(1, presenters.Count);
var presenter = presenters[0];
Assert.Equal(new Size(190, 190), presenter.Bounds.Size);
var horzScroll = scrollBars.Single(x => x.Orientation == Orientation.Horizontal);
var vertScroll = scrollBars.Single(x => x.Orientation == Orientation.Vertical);
Assert.True(horzScroll.IsVisible);
Assert.True(vertScroll.IsVisible);
Assert.Equal(new Size(190, 10), horzScroll.Bounds.Size);
Assert.Equal(new Size(10, 190), vertScroll.Bounds.Size);
Assert.Equal(new Point(0, 190), Position(horzScroll));
Assert.Equal(new Point(190, 0), Position(vertScroll));
}
}
public void Track_By_Name_Should_Track_Removal_And_Readd()
{
StackPanel panel;
TextBlock target;
TextBlock relativeTo;
var root = new TestRoot
{
Child = panel = new StackPanel
{
Children = new Controls.Controls
{
(target = new TextBlock { Name = "target" }),
(relativeTo = new TextBlock { Name = "start" }),
}
}
};
var locator = ControlLocator.Track(relativeTo, "target");
var result = new List<IControl>();
locator.Subscribe(x => result.Add(x));
var other = new TextBlock { Name = "target" };
panel.Children.Remove(target);
panel.Children.Add(other);
Assert.Equal(new[] { target, null, other }, result);
}
public override bool ApplyTemplate()
{
if (this.IsInitialized && this.visualChild == null)
{
Visual visual = this.Content as Visual;
if (visual == null && this.Content != null)
{
DataTemplate template = this.ContentTemplate;
if (template == null)
{
DataTemplateKey key = new DataTemplateKey(this.Content.GetType());
template = this.TryFindResource(key) as DataTemplate;
}
if (template != null)
{
visual = template.CreateVisualTree(this);
FrameworkElement fe = visual as FrameworkElement;
if (fe != null)
{
fe.DataContext = this.Content;
}
}
else
{
visual = new TextBlock
{
Text = this.Content.ToString(),
};
}
}
if (visual != null)
{
this.visualChild = visual;
this.AddVisualChild(this.visualChild);
this.OnApplyTemplate();
return true;
}
}
return false;
}
private static void UpdateXaml2(Dictionary<string, object> dic)
{
var xamlInfo = new DesignerApiXamlFileInfo(dic);
Window window;
Control control;
using (PlatformManager.DesignerMode())
{
var loader = new AvaloniaXamlLoader();
var stream = new MemoryStream(Encoding.UTF8.GetBytes(xamlInfo.Xaml));
Uri baseUri = null;
if (xamlInfo.AssemblyPath != null)
{
//Fabricate fake Uri
baseUri =
new Uri("resm:Fake.xaml?assembly=" + Path.GetFileNameWithoutExtension(xamlInfo.AssemblyPath));
}
var loaded = loader.Load(stream, null, baseUri);
var styles = loaded as Styles;
if (styles != null)
{
var substitute = Design.GetPreviewWith(styles) ??
styles.Select(Design.GetPreviewWith).FirstOrDefault(s => s != null);
if (substitute != null)
{
substitute.Styles.AddRange(styles);
control = substitute;
}
else
control = new StackPanel
{
Children =
{
new TextBlock {Text = "Styles can't be previewed without Design.PreviewWith. Add"},
new TextBlock {Text = "<Design.PreviewWith>"},
new TextBlock {Text = " <Border Padding=20><!-- YOUR CONTROL FOR PREVIEW HERE--></Border>"},
new TextBlock {Text = "<Design.PreviewWith>"},
new TextBlock {Text = "before setters in your first Style"}
}
};
}
if (loaded is Application)
control = new TextBlock {Text = "Application can't be previewed in design view"};
else
control = (Control) loaded;
window = control as Window;
if (window == null)
{
window = new Window() {Content = (Control)control};
}
if (!window.IsSet(Window.SizeToContentProperty))
window.SizeToContent = SizeToContent.WidthAndHeight;
}
s_currentWindow?.Close();
s_currentWindow = window;
window.Show();
Design.ApplyDesignerProperties(window, control);
Api.OnWindowCreated?.Invoke(window.PlatformImpl.Handle.Handle);
Api.OnResize?.Invoke();
}
public Form DropDown <T>(string itemSourceModelName,
string selectedItemModelName,
Action <T> onSelectionChanged = null,
Action <Form> populateItemRow = null,
model.Style style = null)
{
var dp = new Avalonia.Controls.ComboBox();
lib.styleUtil.style(this, dp, style);
// Just as a safety check, make them init the model first
if (!(getModelValue(itemSourceModelName) is IEnumerable <T>))
{
throw new Exception($"Model {nameof(itemSourceModelName)} source property specified by name [{itemSourceModelName}] must be a IEnumerable<T>");
}
// item source binding
AddBinding <IEnumerable>(modelFieldName: itemSourceModelName,
control: dp,
property: Avalonia.Controls.ComboBox.ItemsProperty,
isTwoWayDataBinding: false);
// selected item binding
AddBinding <object>(modelFieldName: selectedItemModelName,
control: dp,
property: Avalonia.Controls.ComboBox.SelectedItemProperty,
isTwoWayDataBinding: true);
if (populateItemRow != null)
{
dp.ItemTemplate = new FuncDataTemplate <object>((itemModel, nameScope) =>
{
if (itemModel == null)
{
// how could itemModel be null? Sometimes it is though, so strange
var tb = new Avalonia.Controls.TextBlock();
tb.Text = "(null)";
return(tb);
}
var rowForm = new Form(__app: this.app, _model: new lib.BindableDynamicDictionary());
// this has to have a unique model
rowForm.DataContext = itemModel;
populateItemRow(rowForm);
rowForm.Host.DataContext = itemModel;
return(rowForm.Host);
});
}
dp.SelectionChanged += (_s, _args) =>
{
if (_args.AddedItems.OfType <T>().Any())
{
var first = _args.AddedItems.Cast <T>().First();
onSelectionChanged?.Invoke(first);
}
};
AddRowToHost(dp);
return(this);
}
public void Should_Pass_ConverterParameter_To_Supplied_Converter()
{
var target = new TextBlock();
var converter = new Mock<IValueConverter>();
var binding = new Binding
{
Converter = converter.Object,
ConverterParameter = "foo",
Path = "Bar",
};
var result = binding.Initiate(target, TextBox.TextProperty).Subject;
Assert.Same("foo", ((BindingExpression)result).ConverterParameter);
}
public void Should_Bind_To_Later_Added_Element()
{
ContentControl target;
StackPanel stackPanel;
var root = new TestRoot
{
Child = stackPanel = new StackPanel
{
Children = new Controls.Controls
{
(target = new ContentControl
{
Name = "target",
}),
}
}
};
var binding = new Binding
{
ElementName = "source",
};
target.Bind(ContentControl.ContentProperty, binding);
var source = new TextBlock
{
Name = "source",
Text = "foo",
};
stackPanel.Children.Add(source);
Assert.Same(source, target.Content);
}
public void Should_Use_Supplied_Converter()
{
var target = new TextBlock();
var converter = new Mock<IValueConverter>();
var binding = new Binding
{
Converter = converter.Object,
Path = "Foo",
};
var result = binding.Initiate(target, TextBox.TextProperty).Subject;
Assert.Same(converter.Object, ((ExpressionSubject)result).Converter);
}
public void Track_By_Name_Should_Find_Control_When_Tree_Changed()
{
TextBlock target1;
TextBlock target2;
TextBlock relativeTo;
var root1 = new TestRoot
{
Child = new StackPanel
{
Children = new Controls.Controls
{
(relativeTo = new TextBlock
{
Name = "start"
}),
(target1 = new TextBlock { Name = "target" }),
}
}
};
var root2 = new TestRoot
{
Child = new StackPanel
{
Children = new Controls.Controls
{
(target2 = new TextBlock { Name = "target" }),
}
}
};
var locator = ControlLocator.Track(relativeTo, "target");
var target = new TextBlock { Name = "target" };
var result = new List<IControl>();
using (locator.Subscribe(x => result.Add(x)))
{
((StackPanel)root1.Child).Children.Remove(relativeTo);
((StackPanel)root2.Child).Children.Add(relativeTo);
}
Assert.Equal(new[] { target1, null, target2 }, result);
Assert.Equal(0, root1.NameScopeRegisteredSubscribers);
Assert.Equal(0, root1.NameScopeUnregisteredSubscribers);
}
public void Should_Return_FallbackValue_When_Path_Not_Resolved()
{
var target = new TextBlock();
var source = new Source();
var binding = new Binding
{
Source = source,
Path = "BadPath",
FallbackValue = "foofallback",
};
target.Bind(TextBlock.TextProperty, binding);
Assert.Equal("foofallback", target.Text);
}
