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正确实现了多级任意绑定，绑定默认行为

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飞色 开 2023-11-28 16:53:14 +08:00
parent 1ef5f21845
commit c870e8a342
1 changed files with 27 additions and 20 deletions
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47
CPF/Binding.cs
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@ -591,15 +591,6 @@ namespace CPF
var Temp_Target = Target.GetPropretyValue(SourcePropertyNames[i]) as CpfObject;
if (Temp_Target == null)
{
//如果链式绑定的子级为null，那么监听他的父级监听子级
this.SourcePropertyIndex = i;
if (SourceProperty!=null)
{
SourceProperty.PropertyChanged -= Target_PropertyChanged;
CancellationPropertyChanged(SourceProperty);
}
(Target as CpfObject).PropertyChanged += Target_PropertyChanged;
SourceProperty = (Target as CpfObject);
return null;
}
Target = Temp_Target;
@ -608,19 +599,23 @@ namespace CPF
}
catch (Exception ex)
{
throw new Exception("错误:{ex}");
throw new Exception($"错误:{ex}");
}
}
CpfObject SourceProperty = null;
private void Target_PropertyChanged(object sender, CPFPropertyChangedEventArgs e)
private void Target_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.NewValue == null)
//重新绑定
if (BindingMode == BindingMode.TwoWay ||
BindingMode == BindingMode.OneWay ||
BindingMode == BindingMode.OneTime)
{
CancellationPropertyChanged(sender as CpfObject);
return;
var SourcePropertyNames = SourcePropertyName.Split('.');
var Temp_Target = GetPropertySource(SourcePropertyName, Source.Target);
var data = (Temp_Target as CpfObject)?.GetValue(SourcePropertyNames.LastOrDefault());
Owner.SetPropretyValue(TargetPropertyName, data);
}
RegisterPropertyChanged(sender as CpfObject);
RegisterPropertyChanged(sender as INotifyPropertyChanged);
}
internal void RegisterPropertyChanged(INotifyPropertyChanged notify)
@ -629,13 +624,25 @@ namespace CPF
//{
// throw new Exception("错误");
//}
var Temp_SourcePropertyName = string.Join(".", this.SourcePropertyName.Split('.').Skip(this.SourcePropertyIndex));
var notifySource = GetPropertySource(Temp_SourcePropertyName, notify);
if (notifySource == null)
var SourcePropertyNames = SourcePropertyName.Split('.');
if (SourcePropertyNames.Length == 1)
{
RegisterPropertyChanged(notify, PropertyChanged);
return;
}
RegisterPropertyChanged(notifySource as INotifyPropertyChanged, PropertyChanged);
var Target = Source.Target;
RegisterPropertyChanged(Target as CpfObject, Target_PropertyChanged);
for (int i = 0; i < SourcePropertyNames.Length - 1; i++)
{
var Temp_Target = Target.GetPropretyValue(SourcePropertyNames[i]) as CpfObject;
if (Temp_Target == null)
{
return;
}
RegisterPropertyChanged(Temp_Target, Target_PropertyChanged);
Target = Temp_Target;
}
RegisterPropertyChanged(Target as INotifyPropertyChanged, PropertyChanged);
}
internal void CancellationPropertyChanged(INotifyPropertyChanged notify)
{