The root of our logical tree is denoted by `IStyleRoot` for historical reasons: before #1594, styling was defined in `Avalonia.Styling` but the logical tree was defined in `Avalonia.Controls`. The styling system needed a root but because it was lower-level than the logical tree it had to define its own root type which was then repurposed for use by the logical tree.
Since #1594 the logical tree is defined in `Avalonia.Styling` as well so we might as well call `IStyleRoot` what it is: the logical tree root.
- Set `InheritanceParent` before Parent so that control doesn't
initially inherit the wrong DataContext
- Don't set `InheritanceParent` when setting `Parent` if
`InheritanceParent` already set
- Added `IDataTemplate.SupportsRecycling`
If a `ContentPresenter`s content is assigned a value which matches the
current `DataTemplate` then just change the
`ContentPresenter.DataContext` and the existing item will update itself.
Previous method introduced in 4241fd8331
caused issue #503, because ContentPresenter should only use Content as
its DataContext when it is not a control. Take the WPF approach and make
ContentPresenter choose its own DataContext. Fixes#503.
...during ApplyTemplate. This was so that ItemsControls could their find
ItemsPresenters nested in other templated controls. Instead use
IItemsPresenterHost to make the presenter register itself with its
TemplatedParent.
Steven Kirk
Nikita Tsukanov
Steven Kirk
José Pedro
donandren