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using System;
using System.Threading;
namespace System.Windows
{
/// <summary>
/// Represents dependency scope of an <see cref="Expression"/>
/// </summary>
/// <remarks>
/// Expressions are responsible for propagating invalidation to
/// dependents when a property changes. The property that changes is
/// known as the "source".
/// </remarks>
internal sealed class DependencySource
{
/// <summary>
/// Dependency source construction
/// </summary>
/// <param name="d">DependencyObject source</param>
/// <param name="dp">Property source</param>
public DependencySource(DependencyObject d, DependencyProperty dp)
{
_d = d;
_dp = dp;
}
/// <summary>
/// DependencyObject source
/// </summary>
public DependencyObject DependencyObject
{
get { return _d; }
}
/// <summary>
/// Property source
/// </summary>
public DependencyProperty DependencyProperty
{
get { return _dp; }
}
private DependencyObject _d;
private DependencyProperty _dp;
}
}
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