/// <summary>
/// Clears the property binding.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="target">The target.</param>
/// <param name="sourceProp">The source prop.</param>
/// <param name="targetProp">The target prop.</param>
public static void ClearPropertyBinding(Object source, INotifyPropertyChanged target, string sourceProp, string targetProp)
{
WeakEntry entry = new WeakEntry(source.GetType(), target.GetType(), sourceProp, targetProp);
Delegate setAction = GetExpressionAction(entry, source, true);
WeakSource.UnRegister(source, setAction, targetProp);
}
public void WeakSource()
{
Foo foo = new Foo();
//WeakReference weakFoo = new WeakReference(foo);
//Assert.Same(foo, weakFoo.Target);
//foo = null;
//GC.Collect();
//GC.WaitForPendingFinalizers();
//Assert.Null(weakFoo.Target);
ISource <Foo> weakFoo = new WeakSource <Foo>(foo);
Assert.Same(foo, weakFoo.Value);
foo = null;
GC.Collect();
GC.WaitForPendingFinalizers();
Assert.Null(weakFoo.Value);
}
public void Get()
{
Foo foo = new Foo();
ISource <Foo> source = new WeakSource <Foo>(foo);
Assert.Same(foo, source.Value);
}
public void Get()
{
Foo foo = new Foo();
ISource<Foo> source = new WeakSource<Foo>(foo);
Assert.Same(foo, source.Value);
}
public void Set()
{
ISource <Foo> source = new WeakSource <Foo>();
Foo foo = new Foo();
source.Value = foo;
Assert.Same(foo, source.Value);
}
public void Set()
{
ISource<Foo> source = new WeakSource<Foo>();
Foo foo = new Foo();
source.Value = foo;
Assert.Same(foo, source.Value);
}
/// <summary>
/// Sets the property binding.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="target">The target.</param>
/// <param name="sourceProp">The source prop.</param>
/// <param name="targetProp">The target prop.</param>
/// <param name="notify">if set to <c>true</c> update immediately.</param>
/// <param name="converter">The converter.</param>
/// <param name="parameter">The converter parameter.</param>
public static void SetPropertyBinding(Object source, INotifyPropertyChanged target, string sourceProp, string targetProp, bool notify = true, IDataConverter converter = null, object parameter = null)
{
WeakEntry entry = new WeakEntry(source.GetType(), target.GetType(), sourceProp, targetProp);
Delegate setAction = GetExpressionAction(entry, source, true, converter);
WeakSource wSource = WeakSource.Register(source, target, setAction, targetProp, converter, parameter);
if (notify)
{
wSource.NotifyPropertyChanged(target, targetProp);
}
}
public void GarbageCollect()
{
Foo foo = new Foo();
ISource <Foo> source = new WeakSource <Foo>(foo);
GC.Collect();
GC.WaitForPendingFinalizers();
Assert.Same(foo, source.Value);
foo = null;
GC.Collect();
GC.WaitForPendingFinalizers();
Assert.Null(source.Value);
}
public void GarbageCollect()
{
Foo foo = new Foo();
ISource<Foo> source = new WeakSource<Foo>(foo);
GC.Collect();
GC.WaitForPendingFinalizers();
Assert.Same(foo, source.Value);
foo = null;
GC.Collect();
GC.WaitForPendingFinalizers();
Assert.Null(source.Value);
}
/// <summary>
/// Registers the specified source.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="target">The target.</param>
/// <param name="action">The action.</param>
/// <param name="targetProp">The target prop.</param>
/// <param name="converter">The converter.</param>
/// <param name="parameter">The converter parameter.</param>
/// <returns></returns>
public static WeakSource Register(Object source, INotifyPropertyChanged target, Delegate action, string targetProp, IDataConverter converter = null, object parameter = null)
{
WeakSource wSource = _weakSources.ContainsKey(source.GetHashCode()) ? _weakSources[source.GetHashCode()] : null;
if (wSource == null)
{
wSource = new WeakSource(source);
_weakSources.Add(source.GetHashCode(), wSource);
}
IList <WeakAction> actions;
if (wSource.Actions.ContainsKey(targetProp))
{
actions = wSource.Actions[targetProp];
}
else
{
actions = new List <WeakAction>();
wSource.Actions.Add(targetProp, actions);
}
actions.Add(new WeakAction(action, converter, parameter));
IList <string> props;
if (!wSource.Targets.ContainsKey(target.GetHashCode()))
{
props = new List <string>();
props.Add(targetProp);
wSource.Targets.Add(target.GetHashCode(), props);
target.PropertyChanged += new PropertyChangedEventHandler(wSource.HandlePropertyChanged);
}
else
{
props = wSource.Targets[target.GetHashCode()];
if (!props.Contains(targetProp))
{
props.Add(targetProp);
}
}
return(wSource);
}
/// <summary>
/// Unregister the specified source.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="action">The action.</param>
/// <param name="targetProp">The target prop.</param>
public static void UnRegister(Object source, Delegate action, string targetProp)
{
WeakSource wSource = _weakSources.ContainsKey(source.GetHashCode()) ? _weakSources[source.GetHashCode()] : null;
if (wSource != null && wSource.Actions.ContainsKey(targetProp))
{
IList <WeakAction> actions = wSource.Actions[targetProp];
var wAction = actions.FirstOrDefault(item => item.Action == action);
if (wAction != null)
{
actions.Remove(wAction);
if (actions.Count == 0)
{
wSource.Actions.Remove(targetProp);
}
}
if (wSource.Actions.Count() == 0)
{
_weakSources.Remove(wSource.GetHashCode());
}
}
}
/// <summary>
/// Registers the specified source.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="target">The target.</param>
/// <param name="action">The action.</param>
/// <param name="targetProp">The target prop.</param>
/// <param name="converter">The converter.</param>
/// <param name="parameter">The converter parameter.</param>
/// <returns></returns>
public static WeakSource Register(Object source, INotifyPropertyChanged target, Delegate action, string targetProp, IDataConverter converter = null, object parameter = null)
{
WeakSource wSource = _weakSources.ContainsKey(source.GetHashCode()) ? _weakSources[source.GetHashCode()] : null;
if (wSource == null)
{
wSource = new WeakSource(source);
_weakSources.Add(source.GetHashCode(), wSource);
}
IList<WeakAction> actions;
if (wSource.Actions.ContainsKey(targetProp))
{
actions = wSource.Actions[targetProp];
}
else
{
actions = new List<WeakAction>();
wSource.Actions.Add(targetProp, actions);
}
actions.Add(new WeakAction(action, converter, parameter));
IList<string> props;
if (!wSource.Targets.ContainsKey(target.GetHashCode()))
{
props = new List<string>();
props.Add(targetProp);
wSource.Targets.Add(target.GetHashCode(), props);
target.PropertyChanged += new PropertyChangedEventHandler(wSource.HandlePropertyChanged);
}
else
{
props = wSource.Targets[target.GetHashCode()];
if (!props.Contains(targetProp))
{
props.Add(targetProp);
}
}
return wSource;
}
