public TValue this[TKey key]
{
get
{
using (_manager.Lock())
return((TValue)_inner[key.ToString()]);
}
set
{
var property = key.ToString();
using (_manager.Lock())
{
if (_inner.TryGetValue(property, out var oldValue))
{
if (value == null)
{
_manager.ChangeRemove(this, property, oldValue);
InternalRemove(property, oldValue);
}
else
{
_manager.ChangeReplace(this, property, value, oldValue);
InternalReplace(property, oldValue, value);
}
}
else
{
if (value != null)
{
_manager.ChangeAdd(this, property, value);
InternalAdd(property, value);
}
}
}
}
}
public void Intercept(IInvocation invocation)
{
var name = invocation.Method.Name;
if (name == nameof(IEntityHandlerProvider.GetHandler))
{
invocation.ReturnValue = this;
}
else if (name.StartsWith("get_"))
{
using (_manager.Lock())
{
var property = name.Substring(4);
if (property == nameof(ILocalHolder.Local))
{
invocation.ReturnValue = _local;
}
else
{
if (!_values.TryGetValue(property, out var entry))
{
entry = _typeConfig.Members[property].TypeConfiguration.DefaultValue;
}
invocation.ReturnValue = entry;
}
}
}
else if (name.StartsWith("set_"))
{
var property = name.Substring(4);
using (_manager.Lock())
{
var newValue = invocation.Arguments[0];
var memberConfig = _typeConfig.Members[property];
if (!_values.TryGetValue(property, out var value))
{
if (newValue != null)
{
// null => value
_values[property] = newValue;
_manager.ChangeAdd(this, property, newValue);
}
//else null => null
}
else
{
if (newValue == null)
{
// value => null
_values.Remove(property);
_manager.ChangeRemove(this, property, value);
}
else
{
//value => value
if (memberConfig.DontCompareBeforeSet || !Equals(value, newValue))
{
_values[property] = newValue;
_manager.ChangeReplace(this, property, newValue, value);
}
}
}
}
_propertyChangedHandler?.Invoke(invocation.Proxy, new PropertyChangedEventArgs(property));
}
else if (invocation.Method.Name == "add_PropertyChanged")
{
_propertyChangedHandler = (PropertyChangedEventHandler)Delegate.Combine(_propertyChangedHandler, (Delegate)invocation.Arguments[0]);
}
else if (invocation.Method.Name == "remove_PropertyChanged")
{
_propertyChangedHandler = (PropertyChangedEventHandler)Delegate.Remove(_propertyChangedHandler, (Delegate)invocation.Arguments[0]);
}
}
