private void OnChanged(IPropertyChanged changed)
{
lock (locker)
{
if (isSuppressingChange)
{
return;
}
isSuppressingChange = true;
}
var value = changed.NewValue;
if (value == null)
{
Object = null;
Directory.DeleteTree();
Directory.Refresh();
}
else
{
Object = new DbObjectNode(Database, (IRxObject)changed.NewValue, Directory);
}
lock (locker)
{
isSuppressingChange = false;
}
}
/// <summary>
/// 验证属性值变更状态是否满足要求
/// </summary>
/// <param name="propertyChanged"></param>
/// <param name="context"></param>
/// <returns></returns>
public static bool IsCondition(IPropertyChanged propertyChanged, AbstractRequestContext context)
{
if (propertyChanged.PropertyChanged == PropertyChangedState.Ignore)
{
return(true);
}
var changedVersion = context.GetPropertyVersion(propertyChanged.Property);
switch (changedVersion)
{
case -1:
{
return(true);
}
case 0:
{
return(propertyChanged.PropertyChanged == PropertyChangedState.Unchanged);
}
case int version when version > 0:
{
return(propertyChanged.PropertyChanged == PropertyChangedState.Changed);
}
default:
{
return(false);
}
}
}
private void GetPropertyInfo(object src, object dest, string srcProperty, string destProperty)
{
var lastObj = GetObjectFromString(srcProperty, src, out srcPropertyLast);
if (lastObj != null && lastObj is IPropertyChanged)
{
foreach (PropertyInfo propertyInfo in lastObj.GetType().GetProperties())
{
if (propertyInfo.Name == srcPropertyLast)
{
srcPropertyInfo = propertyInfo;
break;
}
}
srcObject = lastObj as IPropertyChanged;
srcObject.PropertyChanged += Binding_PropertyChanged;
}
lastObj = GetObjectFromString(destProperty, dest, out destPropertyLast);
if (lastObj != null)
{
foreach (PropertyInfo propertyInfo in lastObj.GetType().GetProperties())
{
if (propertyInfo.Name == destPropertyLast)
{
destPropertyInfo = propertyInfo;
break;
}
}
destObject = lastObj;
}
}
public SudokuController(IPropertyChanged propertyChanged)
{
_propertyChanged = propertyChanged;
_game = new Sudoku.Game();
_game.create();
_propertyChanged.NotifyPropertyChanged();
}
/// <summary>Performs the logical operation "target.PropertyChanged += handler",
/// where 'target' is located in another AppDomain, using this helper as an
/// intermediary so that the subscription works correctly.</summary>
public CrossDomainPropertyChangeHelper(IPropertyChanged target, PropertyChangedDelegate handler)
{
Debug.Assert(RemotingServices.IsTransparentProxy(target));
_handler = handler;
target.PropertyChanged += Intermediary;
// Honestly I don't know what I am doing. Tried to figure it out, failed.
((ILease)RemotingServices.GetLifetimeService(this)).Register(this); // register self as sponsor
}
/// <summary>Performs the logical operation "target.PropertyChanged += handler",
/// where 'target' is located in another AppDomain, using this helper as an
/// intermediary so that the subscription works correctly.</summary>
public CrossDomainPropertyChangeHelper(IPropertyChanged target, PropertyChangedDelegate handler)
{
Debug.Assert(RemotingServices.IsTransparentProxy(target));
_handler = handler;
target.PropertyChanged += Intermediary;
// Honestly I don't know what I am doing. Tried to figure it out, failed.
((ILease)RemotingServices.GetLifetimeService(this)).Register(this); // register self as sponsor
}
public static bool Change <T>(this IPropertyChanged input, ref T field, T value, [CallerMemberName] string propertyName = "")
{
if (EqualityComparer <T> .Default.Equals(field, value))
{
return(false);
}
field = value;
input.Changed(propertyName);
return(true);
}
public static bool Change <T>(this IPropertyChanged input, ref T field, T value, Expression <Func <T> > propertyName)
{
if (EqualityComparer <T> .Default.Equals(field, value))
{
return(false);
}
field = value;
input.Changed(propertyName);
return(true);
}
public static void Changed <T>(this IPropertyChanged input, Expression <Func <T> > propertyName)
{
if (propertyName == null)
{
throw new ArgumentNullException(nameof(propertyName));
}
var body = propertyName.Body as MemberExpression;
if (body == null)
{
throw new ArgumentNullException($"{nameof(propertyName)}.{nameof(propertyName.Body)}");
}
input.OnPropertyChanged(body.Member.Name);
}
private void OnChanged(IPropertyChanged changed)
{
lock (locker)
{
if (isSuppressingChange)
{
return;
}
}
var value = changed.NewValue;
if (value == null)
{
File.Delete();
}
else
{
System.IO.File.WriteAllText(File.FullName, (string)TypeConverter.Convert(changed.NewValue, typeof(string)));
}
Database.NotifyGlobalChanged(changed);
}
public Binding(IPropertyChanged source, string sourcePropertyName, IPropertyChanged target, string targetPropertyName, BindingType type = BindingType.TwoWay, IValueConverter converter = null)
{
this.source = source;
this.sourcePropertyName = sourcePropertyName;
this.target = target;
this.targetPropertyName = targetPropertyName;
this.type = type;
this.converter = converter == null ? new NoOpCoverter() : converter;
if (type == BindingType.TwoWay || type == BindingType.OneWay)
{
sourceToTarget = true;
source.PropertyChanged += SourceChanged;
}
if (type == BindingType.TwoWay || type == BindingType.OneWayToSource)
{
targetToSource = true;
target.PropertyChanged += TargetChanged;
}
ValidateBinding();
}
public Binding(IPropertyChanged source, string sourcePropertyName, IPropertyChanged target, string targetPropertyName, BindingType type = BindingType.TwoWay, IValueConverter converter = null)
{
this.source = source;
this.sourcePropertyName = sourcePropertyName;
this.target = target;
this.targetPropertyName = targetPropertyName;
this.type = type;
this.converter = converter == null ? new NoOpCoverter() : converter;
if (type == BindingType.TwoWay || type == BindingType.OneWay)
{
sourceToTarget = true;
source.PropertyChanged += SourceChanged;
}
if (type == BindingType.TwoWay || type == BindingType.OneWayToSource)
{
targetToSource = true;
target.PropertyChanged += TargetChanged;
}
ValidateBinding();
}
public void SetParent(object parent, PropertyInfo propertyInfo)
{
_parent = parent as IPropertyChanged;
_propertyInfo = propertyInfo;
}
protected void OnGlobalChanged(IPropertyChanged changed)
{
GlobalChanged?.Invoke(changed);
}
public void SetParent(object parent, PropertyInfo propertyInfo)
{
_parent = parent as IPropertyChanged;
_propertyInfo = propertyInfo;
}
public static void Changed(this IPropertyChanged input, [CallerMemberName] string propertyName = "") => input.OnPropertyChanged(propertyName);
internal void NotifyGlobalChanged(IPropertyChanged changed)
{
OnGlobalChanged(changed);
}
