One shouldn't call `ClearContainer` on a container that is an item. Adjusted `SelectingItemsControlTests` because selection is actually maintained on move with containers hold their own `IsSelected` state.
Fixes#11128
Which exposes the resize reason and new client size. Required renaming `PlatformResizeReason` to `WindowResizeReason`. Made `TopLevel.HandleResized` method internal.
Allow overriding the default behavior of item containers in styles or in `ItemContainerTheme`. To do this, use `SetCurrentValue` to set the properties, only if the properties are not already set (i.e. from a style). This also requires us to clear the current value when the container is cleared (styles won't be affected as `AvaloniaObject.ClearValue` only clears local or `SetCurrentValue` values).
Makes the `StyledElement.Classes` and `Flyout.FlyoutPresenterClasses` properties readonly. Adds a transformer to the XAML compiler to convert attribute syntax classes setters to collection syntax so that they will be added to the existing `Classes` object.
Prevents an unneeded allocation of a `Classes` object when setting `Classes` from XAML.
Rather than using the `ISelectable` interface to communicate container selection from the `SelectingItemsControl` to the container, use the `SelectingItemsControl.IsSelected` attached property, setting it with `SetCurrentValue` so that bindings defined in a style or item container theme can override the selection. Required an extra virtual `ContainerForItemPreparedOverride` method on `ItemsControl`.
The real Windows Maximize button has no automation ID and is localized. Get it by index instead of by name. The Avalonia one isn't localized so we can get it by name.
robloo
Max Katz
Julien Lebosquain
Steven Kirk
Steven Kirk
Nikita Tsukanov
jankrib
Benedikt Stebner
Tom Edwards