internal static void SyncColumnProperty <T>(AvaloniaObject column, AvaloniaObject content, AvaloniaProperty <T> contentProperty, AvaloniaProperty <T> columnProperty)
{
if (!column.IsSet(columnProperty))
{
content.ClearValue(contentProperty);
}
else
{
content.SetValue(contentProperty, column.GetValue(columnProperty));
}
}
/// <remarks>
/// This method reflects Grid.SharedScopeProperty state by setting / clearing
/// dynamic property PrivateSharedSizeScopeProperty. Value of PrivateSharedSizeScopeProperty
/// is a collection of SharedSizeState objects for the scope.
/// </remarks>
internal static void OnIsSharedSizeScopePropertyChanged(AvaloniaObject d, AvaloniaPropertyChangedEventArgs e)
{
if ((bool)e.NewValue)
{
SharedSizeScope sharedStatesCollection = new SharedSizeScope();
d.SetValue(PrivateSharedSizeScopeProperty, sharedStatesCollection);
}
else
{
d.ClearValue(PrivateSharedSizeScopeProperty);
}
}
/// <summary>
/// Removes the specified view from the region.
/// </summary>
/// <param name="view">The view to remove.</param>
public virtual void Remove(object view)
{
ItemMetadata itemMetadata = this.GetItemMetadataOrThrow(view);
this.ItemMetadataCollection.Remove(itemMetadata);
AvaloniaObject dependencyObject = view as AvaloniaObject;
if (dependencyObject != null && Regions.RegionManager.GetRegionManager(dependencyObject) == this.RegionManager)
{
dependencyObject.ClearValue(Regions.RegionManager.RegionManagerProperty);
}
}
public static object UpdateDependencyColor(this AvaloniaObject depo, AvaloniaProperty dp, Color newColor)
{
if (!newColor.IsDefault)
{
depo.SetValue(dp, newColor.ToBrush());
}
else
{
depo.ClearValue(dp);
}
return(depo.GetValue(dp));
}
private static void ClearChildViews(IRegion region)
{
foreach (var view in region.Views)
{
AvaloniaObject dependencyObject = view as AvaloniaObject;
if (dependencyObject != null)
{
if (GetClearChildViews(dependencyObject))
{
dependencyObject.ClearValue(RegionManager.RegionManagerProperty);
}
}
}
}
/// <summary>
/// <see cref="PropertyMetadata.PropertyChangedCallback"/>
/// </summary>
/// <remarks>
/// This method reflects Grid.SharedScopeProperty state by setting / clearing
/// dynamic property PrivateSharedSizeScopeProperty. Value of PrivateSharedSizeScopeProperty
/// is a collection of SharedSizeState objects for the scope.
/// Also PrivateSharedSizeScopeProperty is FrameworkPropertyMetadataOptions.Inherits property. So that all children
/// elements belonging to a certain scope can easily access SharedSizeState collection. As well
/// as been norified about enter / exit a scope.
/// </remarks>
internal static void OnIsSharedSizeScopePropertyChanged(AvaloniaObject d, AvaloniaPropertyChangedEventArgs e)
{
// is it possible to optimize here something like this:
// if ((bool)d.GetValue(Grid.IsSharedSizeScopeProperty) == (d.GetLocalValue(PrivateSharedSizeScopeProperty) != null)
// { /* do nothing */ }
if ((bool)e.NewValue)
{
SharedSizeScope sharedStatesCollection = new SharedSizeScope();
d.SetValue(PrivateSharedSizeScopeProperty, sharedStatesCollection);
}
else
{
d.ClearValue(PrivateSharedSizeScopeProperty);
}
}
